From 3fdfeb2dce3fa8baf4d61ee62caee386b87514db Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Mon, 8 Jun 2026 13:29:19 +0530 Subject: [PATCH 01/24] feat: implement rust-based case conversion engine --- .gitignore | 5 +- .../Controllers/WordCaseController.cs | 74 +++- .../DotNetAPI/DotNetAPI.csproj | 6 +- .../Models/Requests/ConvertRequest.cs | 2 + .../CaseConversionAPI/DotNetAPI/Program.cs | 23 +- .../Interfaces/INativeStringEngine.cs | 9 + .../Services/Native/ProcessStringService.cs | 14 +- .../Services/Rust/ProcessRustEngineService.cs | 374 ++++++++++++++++++ .../CaseConversionAPI/DotNetAPI/Startup.cs | 4 +- Backend/CaseConversionAPI/RustLib/Cargo.toml | 11 + .../RustLib/Scripts/build_and_test.sh | 110 ++++++ .../CaseConversionAPI/RustLib/src/client.rs | 61 +++ .../RustLib/src/conversion_type.rs | 70 ++++ .../RustLib/src/cpp_adapter.rs | 3 + .../RustLib/src/dispatcher.rs | 101 +++++ .../CaseConversionAPI/RustLib/src/factory.rs | 93 +++++ Backend/CaseConversionAPI/RustLib/src/ffi.rs | 214 ++++++++++ Backend/CaseConversionAPI/RustLib/src/lib.rs | 80 ++++ .../RustLib/src/rust_logic.rs | 3 + .../RustLib/src/strategies/alternating.rs | 71 ++++ .../RustLib/src/strategies/capitalize.rs | 62 +++ .../RustLib/src/strategies/invert_words.rs | 83 ++++ .../RustLib/src/strategies/kebab_case.rs | 53 +++ .../RustLib/src/strategies/leetspeak.rs | 68 ++++ .../RustLib/src/strategies/lowercase.rs | 50 +++ .../RustLib/src/strategies/mod.rs | 84 ++++ .../RustLib/src/strategies/remove_spaces.rs | 51 +++ .../RustLib/src/strategies/remove_vowels.rs | 57 +++ .../RustLib/src/strategies/reverse.rs | 52 +++ .../RustLib/src/strategies/sentence_case.rs | 67 ++++ .../RustLib/src/strategies/snake_case.rs | 58 +++ .../RustLib/src/strategies/toggle_case.rs | 67 ++++ .../RustLib/src/strategies/uppercase.rs | 51 +++ .../RustLib/tests/integration_tests.rs | 245 ++++++++++++ README.md | 107 ++++- cpp_results.json | 126 ++++++ rust_results.json | 126 ++++++ writeFile.js | 13 +- 38 files changed, 2721 insertions(+), 27 deletions(-) create mode 100644 Backend/CaseConversionAPI/DotNetAPI/Services/Interfaces/INativeStringEngine.cs create mode 100644 Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs create mode 100644 Backend/CaseConversionAPI/RustLib/Cargo.toml create mode 100755 Backend/CaseConversionAPI/RustLib/Scripts/build_and_test.sh create mode 100644 Backend/CaseConversionAPI/RustLib/src/client.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/conversion_type.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/cpp_adapter.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/dispatcher.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/factory.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/ffi.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/lib.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/rust_logic.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/alternating.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/capitalize.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/invert_words.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/kebab_case.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/leetspeak.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/lowercase.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/mod.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/remove_spaces.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/remove_vowels.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/reverse.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/sentence_case.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/snake_case.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/toggle_case.rs create mode 100644 Backend/CaseConversionAPI/RustLib/src/strategies/uppercase.rs create mode 100644 Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs create mode 100644 cpp_results.json create mode 100644 rust_results.json diff --git a/.gitignore b/.gitignore index 450531c..b44130b 100644 --- a/.gitignore +++ b/.gitignore @@ -107,4 +107,7 @@ docker-compose.override.yml *DotNetAPI.Tests.csproj.lscache *DotNetAPI.csproj.lscache -Advantage/ \ No newline at end of file +Advantage/ + +*Cargo.lock +target/ \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs b/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs index 2cf4dab..740ded0 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs @@ -41,6 +41,8 @@ using Microsoft.AspNetCore.Mvc; using StringConversionAPI.Models; using StringConversionAPI.Services; +using StringConversionAPI.Services.Rust; +using StringConversionAPI.Services.Native; namespace StringConversionAPI.Controllers { @@ -65,6 +67,8 @@ public sealed class BatchRequest /// Gets or sets the transformation routine routine index matching unmanaged engine structures. /// public int Choice { get; set; } + + public string? EngineType { get; set; } } /// @@ -121,15 +125,17 @@ public IActionResult Login([FromBody] LoginRequest request) [Produces("application/json")] public sealed class WordCaseController : ControllerBase { - private readonly ProcessStringService _service; + private readonly IEnumerable _engines; /// /// Initializes a new instance of the class. /// - /// The business service broker handling platform interop layers. - public WordCaseController(ProcessStringService service) + /// Consolidate into a single constructor that resolves the strategy dynamically. + /// Service name. + + public WordCaseController(IEnumerable engines) { - _service = service ?? throw new ArgumentNullException(nameof(service)); + _engines = engines; } /// @@ -144,9 +150,14 @@ public WordCaseController(ProcessStringService service) public IActionResult Convert([FromBody] ConvertRequest request) { if (request == null) - { return BadRequest("The incoming conversion request structural instance cannot be null."); - } + + // Resolve engine dynamically: Defaults to "cpp" if EngineType is not provided + var engine = _engines.FirstOrDefault(e => + e.Name.Equals(request.EngineType ?? "cpp", StringComparison.OrdinalIgnoreCase)); + + if (engine == null) + return BadRequest($"Engine '{request.EngineType}' not found."); try { @@ -161,7 +172,7 @@ public IActionResult Convert([FromBody] ConvertRequest request) } // Process across the unmanaged barrier interface routine - string result = _service.Convert(request.Text, request.Choice); + string result = engine.Convert(request.Text, request.Choice); // Check for predefined error strings indicating a failure at the security gate if (string.Equals(result, "ERROR_BUFFER_OVERFLOW_LIMIT_5MB", StringComparison.Ordinal)) @@ -207,7 +218,13 @@ public async Task ConvertBatchAsync([FromBody] BatchRequest reque try { // Delegate downstream to the underlying parallelization management framework - IEnumerable results = await _service.ConvertBatchAsync(request.Texts, request.Choice); + var engine = _engines.FirstOrDefault(e => e.Name.Equals(request.EngineType ?? "cpp", StringComparison.OrdinalIgnoreCase)); + + if (engine == null) + return BadRequest("Engine not found."); + + IEnumerable results = await engine.ConvertBatchAsync(request.Texts, request.Choice); + return Ok(results); } catch (ArgumentException ex) @@ -220,6 +237,47 @@ public async Task ConvertBatchAsync([FromBody] BatchRequest reque Debug.WriteLine($"Unexpected parallel engine batch anomaly intercepted: {ex}"); return StatusCode(StatusCodes.Status500InternalServerError, "Internal parallel pipeline task orchestration error."); } + } + } + [ApiController] + [Route("api/benchmark")] + public sealed class BenchmarkController : ControllerBase + { + private readonly IEnumerable _engines; + + // The DI container automatically provides all registered INativeStringEngine services + public BenchmarkController(IEnumerable engines) + { + _engines = engines; + } + + [HttpPost("compare")] + public IActionResult Compare([FromBody] string input, [FromQuery] int choice) + { + var results = new Dictionary(); + const int iterations = 1000; + + foreach (var engine in _engines) + { + // 1. Warm-up: Essential for JIT and native library initialization + for (int i = 0; i < 50; i++) + { + engine.Convert(input, choice); + } + + // 2. Measurement: Use a high-resolution loop + var sw = Stopwatch.StartNew(); + for (int i = 0; i < iterations; i++) + { + engine.Convert(input, choice); + } + sw.Stop(); + + // Calculate average latency (in milliseconds) for this specific engine + results[engine.Name] = sw.Elapsed.TotalMilliseconds / iterations; + } + + return Ok(results); } } } \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj b/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj index 088c4cf..432b3fa 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj +++ b/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj @@ -33,8 +33,8 @@ - - - + + + \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Models/Requests/ConvertRequest.cs b/Backend/CaseConversionAPI/DotNetAPI/Models/Requests/ConvertRequest.cs index fc2fae4..c8527b9 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Models/Requests/ConvertRequest.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Models/Requests/ConvertRequest.cs @@ -67,5 +67,7 @@ public sealed class ConvertRequest /// [Required] public int Choice { get; set; } + + public string? EngineType { get; set; } } } \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Program.cs b/Backend/CaseConversionAPI/DotNetAPI/Program.cs index d8b7d41..989acc6 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Program.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Program.cs @@ -53,6 +53,8 @@ using OpenTelemetry.Resources; using OpenTelemetry.Trace; using StringConversionAPI.Services; +using StringConversionAPI.Services.Native; +using StringConversionAPI.Services.Rust; WebApplicationBuilder builder = WebApplication.CreateBuilder(args); @@ -169,7 +171,26 @@ // Register Core Components within Stateless Lifetime Boundaries builder.Services.AddSingleton(); -builder.Services.AddSingleton(); + +// 1. To register specific implementations as themselves +builder.Services.AddSingleton(); +builder.Services.AddSingleton(); + +// 2. To register all implementations as the interface to support IEnumerable injection +builder.Services.AddSingleton(); +builder.Services.AddSingleton(); + +// 3. To keep your factory logic if you still need to resolve a default "provider" +// You can keep this if your WordCaseController needs to know which one is the "primary" +builder.Services.AddScoped(serviceProvider => +{ + var config = serviceProvider.GetRequiredService(); + var provider = config["NativeEngineSettings:Provider"] ?? "cpp"; + + return provider.ToLower() == "rust" + ? serviceProvider.GetRequiredService() + : serviceProvider.GetRequiredService(); +}); WebApplication app = builder.Build(); diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Interfaces/INativeStringEngine.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Interfaces/INativeStringEngine.cs new file mode 100644 index 0000000..414e246 --- /dev/null +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Interfaces/INativeStringEngine.cs @@ -0,0 +1,9 @@ +namespace StringConversionAPI.Services +{ + public interface INativeStringEngine + { + string Name { get; } + string Convert(string input, int choice); + Task> ConvertBatchAsync(IEnumerable texts, int choice); + } +} \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Native/ProcessStringService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Native/ProcessStringService.cs index 1204a8d..4097e3d 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Native/ProcessStringService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Native/ProcessStringService.cs @@ -51,14 +51,14 @@ using System.Runtime.InteropServices; using System.Threading.Tasks; -namespace StringConversionAPI.Services +namespace StringConversionAPI.Services.Native { /// /// Provides low-latency, hardware-optimized orchestration between the managed .NET runtime and /// the unmanaged native C++ execution layer. Implements automated garbage collection disposal patterns /// for native system descriptors and locks parallel work to specific performance-core limits. /// - public class ProcessStringService : IDisposable + public class CppEngineService : INativeStringEngine, IDisposable { #region Performance & Security Constants @@ -101,15 +101,17 @@ private delegate IntPtr ProcessStringDelegate( #endregion + public string Name => "CppEngine"; + #region Constructors / Finalizers /// - /// Initializes a new instance of the class. + /// Initializes a new instance of the class. /// Dynamically resolves and links OS-specific binary dependencies at application runtime. /// /// Thrown when operating on unmapped OS environments. /// Thrown when the target unmanaged module cannot be resolved within path scopes. - public ProcessStringService() + public CppEngineService() { string dllName = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "libProcessStringDLL.dll" : RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? "libProcessStringDLL.so" : @@ -128,10 +130,10 @@ public ProcessStringService() } /// - /// Finalizes an instance of the class. + /// Finalizes an instance of the class. /// Acts as a safety net fallback to guarantee that unmanaged system handles are reclaimed. /// - ~ProcessStringService() + ~CppEngineService() { Dispose(false); } diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs new file mode 100644 index 0000000..1a0d63c --- /dev/null +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -0,0 +1,374 @@ +/************************************************************************************************** + * File : NativeLibraryLoader.cs + * + * Copyright : (c) 2016–2026 Nitish Singh. All rights reserved. + * License : Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + * Description : Singleton-native library lifecycle manager providing cached loading, + * retry with exponential backoff, circuit breaker protection, and + * runtime health validation for unmanaged DLL/SO/DYLIB dependencies. + * + * Author : Nitish Singh + * + * Revision History: + * ------------------------------------------------------------------------------------------------ + * Version Date Author Description + * ------------------------------------------------------------------------------------------------ + * 1.0 2026-04-11 Nitish Singh Initial implementation of rust service + * + **************************************************************************************************/ + +using System; +using System.Collections.Generic; +using System.Diagnostics; +using System.IO; +using System.Linq; +using System.Runtime.InteropServices; +using System.Threading.Tasks; +using StringConversionAPI.Services; + +namespace StringConversionAPI.Services.Rust +{ + /// + /// Provides low-latency, hardware-optimized orchestration between the managed .NET runtime and + /// the unmanaged native C++ execution layer. Implements automated garbage collection disposal patterns + /// for native system descriptors and locks parallel work to specific performance-core limits. + /// + public class RustEngineService : INativeStringEngine, IDisposable + { + #region Performance & Security Constants + + /// + /// Defines the optimum physical execution width targeting specific hardware architectures (e.g., Apple M2 Performance Cores) + /// to maximize Instruction Per Cycle (IPC) throughput while minimizing cache thrashing. + /// + private const int MaxNativeParallelism = 4; + + /// + /// Defines the rigid maximum allocation threshold (5 MB in bytes) allowed for aggregate processing payloads + /// to mitigate systemic unmanaged out-of-memory vulnerabilities or host container crash vectors. + /// + private const long MaxBatchPayloadBytes = 5 * 1024 * 1024; + + #endregion + + #region Native Function Pointers & Delegates + + [UnmanagedFunctionPointer(CallingConvention.Cdecl, CharSet = CharSet.Ansi)] + private delegate IntPtr ProcessStringDelegate( + [MarshalAs(UnmanagedType.LPUTF8Str)] string input, + int len, + int choice, + [MarshalAs(UnmanagedType.LPUTF8Str)] string traceId); + + [UnmanagedFunctionPointer(CallingConvention.Cdecl)] + private delegate void FreeStringDelegate(IntPtr ptr); + + #endregion + + #region Private Fields + + private readonly ProcessStringDelegate _processString; + private readonly FreeStringDelegate _freeStringDelegate; + private readonly IntPtr _libraryHandle; + private bool _disposed; + + private static readonly ActivitySource _activitySource = new("CaseConversion.Engine"); + + #endregion + + public string Name => "RustEngine"; + + #region Constructors / Finalizers + + /// + /// Initializes a new instance of the class. + /// Dynamically resolves and links OS-specific binary dependencies at application runtime. + /// + /// Thrown when operating on unmapped OS environments. + /// Thrown when the target unmanaged module cannot be resolved within path scopes. + public RustEngineService() + { + string subDir = "rust"; + string dllName = RuntimeInformation.IsOSPlatform(OSPlatform.Windows) ? "librust_lib.dll" : + RuntimeInformation.IsOSPlatform(OSPlatform.Linux) ? "librust_lib.so" : + RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "librust_lib.dylib" : + throw new PlatformNotSupportedException("The executing operating system platform is not supported."); + + string fullPath = Path.Combine(AppContext.BaseDirectory, subDir, dllName); + + _libraryHandle = LoadLibraryWithRetry(fullPath); + + string prefix = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "_" : ""; + IntPtr procAddr = NativeLibrary.GetExport(_libraryHandle, "process_string_dll"); + IntPtr freeProcAddr = NativeLibrary.GetExport(_libraryHandle, "free_string"); + + _processString = Marshal.GetDelegateForFunctionPointer(procAddr); + _freeStringDelegate = Marshal.GetDelegateForFunctionPointer(freeProcAddr); + } + + /// + /// Finalizes an instance of the class. + /// Acts as a safety net fallback to guarantee that unmanaged system handles are reclaimed. + /// + ~RustEngineService() + { + Dispose(false); + } + + #endregion + + #region Public Methods + + /// + /// Executes a single text case transformation across the unmanaged runtime interface boundaries. + /// Tracks execution context using distributed OpenTelemetry tracing parameters. + /// + /// The target managed source string requiring mutation processing. + /// The specific functional conversion algorithmic index to be executed. + /// The fully processed string returned from the native compiler engine layer. + public string Convert(string input, int choice) + { + if (string.IsNullOrEmpty(input)) + return input; + + using var activity = _activitySource.StartActivity("Native-C++-Process", ActivityKind.Internal); + + if (activity != null) + { + activity.SetTag("app.operation", "Convert"); + activity.SetTag("conversion.choice", choice); + activity.SetTag("input.length", input.Length); + activity.SetTag("input.byte_count", System.Text.Encoding.UTF8.GetByteCount(input)); + } + + IntPtr resultPtr = IntPtr.Zero; + + try + { + // Calculate precise multi-byte boundary limits for UTF-8 compatibility to prevent truncation across marshaling steps. + int byteCount = System.Text.Encoding.UTF8.GetByteCount(input); + + activity?.SetTag("input.byte_count", byteCount); + + string traceId = Activity.Current?.TraceId.ToString() ?? "no-trace-context"; + + activity?.SetTag("trace_id", traceId); + + // ---- Native span Activity: Captures the execution of the unmanaged processing call, including input characteristics and trace context for end-to-end observability ---- + + using var nativeActivity = _activitySource.StartActivity("native.processString", ActivityKind.Internal); + + nativeActivity?.SetTag("native.method", "processStringDLL"); + nativeActivity?.SetTag("input.byte_count", byteCount); + nativeActivity?.SetTag("choice", choice); + + var sw = System.Diagnostics.Stopwatch.StartNew(); + + // Pass byteCount instead of string length to ensure memory-accurate pointer sizing within unmanaged buffers + resultPtr = _processString(input, byteCount, choice, traceId); + + sw.Stop(); + + nativeActivity?.SetTag("native.execution_time_ms", sw.Elapsed.TotalMilliseconds); + + if (resultPtr == IntPtr.Zero) + { + activity?.SetStatus(ActivityStatusCode.Ok); + return string.Empty; + } + + string result = Marshal.PtrToStringUTF8(resultPtr) ?? string.Empty; + + activity?.SetTag("output.length", result.Length); + activity?.SetTag("output.byte_count", System.Text.Encoding.UTF8.GetByteCount(result)); + + // Validate engine security boundaries for internal errors passed via predefined string tokens + if (result == "ERROR_BUFFER_OVERFLOW_LIMIT_5MB") + { + activity?.SetStatus(ActivityStatusCode.Error, "The provided string allocation block size exceeded the internal 5MB memory guard limit."); + activity?.SetTag("error.code", "BUFFER_OVERFLOW_LIMIT"); + activity?.SetTag("error.detail", "The native processing engine rejected the input due to exceeding the maximum allowed allocation size, which is a protective measure against potential memory exhaustion vulnerabilities."); + } + else + { + activity?.SetStatus(ActivityStatusCode.Ok); + } + + return result; + } + catch (Exception ex) + { + activity?.SetStatus(ActivityStatusCode.Error, ex.Message); + activity?.SetTag("error.type", ex.GetType().Name); + activity?.SetTag("error.message", ex.Message); + throw; + } + finally + { + // Enforce caller-frees design contract to prevent memory leaks in the application process space + if (resultPtr != IntPtr.Zero) + { + _freeStringDelegate(resultPtr); + } + } + } + + /// + /// Performs asynchronous parallel batch processing on a sequence of inputs, targeting local performance core topologies. + /// Guarantees index ordering preservation between request arrays and returned result sets. + /// + /// The collection of payload strings to submit for rapid processing. + /// The specific algorithmic modification identifier to be globally applied. + /// An ordered collection containing the modified output payloads. + /// Thrown if the cumulative raw payload sizes violate security limits. + public async Task> ConvertBatchAsync(IEnumerable inputs, int choice) + { + if (inputs == null) + { + return Array.Empty(); + } + + List inputList = inputs.ToList(); + int count = inputList.Count; + + // Enforce explicit size validation boundaries prior to scheduling tasks to minimize unmanaged overhead risks + long totalByteCount = inputList.Sum(s => (long)(s?.Length ?? 0)); + if (totalByteCount > MaxBatchPayloadBytes) + { + throw new ArgumentException($"The cumulative size of the submitted batch payload ({totalByteCount} bytes) violates the maximum security threshold of {MaxBatchPayloadBytes} bytes."); + } + + string[] results = new string[count]; + ParallelOptions options = new() { MaxDegreeOfParallelism = MaxNativeParallelism }; + + // Process via deterministic zero-allocation range looping to ensure elements match request index spots perfectly + await Parallel.ForEachAsync(Enumerable.Range(0, count), options, async (i, token) => + { + results[i] = await Task.Run(() => Convert(inputList[i], choice), token); + }); + + return results; + } + + #endregion + + #region Disposal Interface Implementation + + /// + /// Releases all operational resource handles currently requested by the interop management layer. + /// + public void Dispose() + { + Dispose(true); + GC.SuppressFinalize(this); + } + + /// + /// Contextual handler invoked to selectively clean up tracking state blocks inside native components. + /// + /// True to release both managed and unmanaged dependencies; false to release only unmanaged pointers. + protected virtual void Dispose(bool disposing) + { + if (!_disposed) + { + if (_libraryHandle != IntPtr.Zero) + { + NativeLibrary.Free(_libraryHandle); + } + + _disposed = true; + } + } + + #endregion + + #region Native Library Loading + + /// + /// Loads the native C++ runtime library with retry and exponential backoff strategy. + /// This method is responsible for safely resolving and initializing the unmanaged + /// execution engine required for string processing operations. + /// + /// It includes: + /// - Retry mechanism for transient startup failures (e.g., container race conditions) + /// - Exponential backoff to reduce filesystem contention + /// - OpenTelemetry instrumentation for observability across startup lifecycle + /// + /// Failure behavior: + /// - Throws if all retries fail + /// - Captures last exception as inner exception for debugging + /// + /// This method is critical during application bootstrap and should remain lightweight + /// and deterministic to avoid delaying service readiness. + /// + /// Absolute path to the native library binary. + /// Handle to the loaded native library. + /// + /// Thrown when the native library cannot be loaded after all retry attempts. + /// + private static IntPtr LoadLibraryWithRetry(string path) + { + const int maxRetries = 3; + int delay = 50; + + using var activity = _activitySource.StartActivity( + "NativeLibrary.Load", + ActivityKind.Internal + ); + + activity?.SetTag("native.library.path", path); + activity?.SetTag("native.load.max_retries", maxRetries); + + Exception? lastException = null; + + for (int attempt = 1; attempt <= maxRetries; attempt++) + { + try + { + activity?.SetTag("native.load.attempt", attempt); + + var handle = NativeLibrary.Load(path); + + if (handle != IntPtr.Zero) + { + activity?.SetStatus(ActivityStatusCode.Ok); + activity?.SetTag("native.load.success", true); + return handle; + } + } + catch (Exception ex) + { + lastException = ex; + + activity?.AddEvent(new ActivityEvent( + $"Native load failed on attempt {attempt}: {ex.Message}" + )); + } + + Thread.Sleep(delay); + delay *= 2; + } + + activity?.SetStatus(ActivityStatusCode.Error, "Native library load failed"); + activity?.SetTag("native.load.success", false); + + throw new DllNotFoundException( + $"Failed to load native library after {maxRetries} attempts: {path}", + lastException + ); + } + + #endregion + } +} \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Startup.cs b/Backend/CaseConversionAPI/DotNetAPI/Startup.cs index 97358de..2914a0c 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Startup.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Startup.cs @@ -34,6 +34,8 @@ using Microsoft.Extensions.DependencyInjection; using Microsoft.Extensions.Hosting; using StringConversionAPI.Services; +using StringConversionAPI.Services.Native; +using StringConversionAPI.Services.Rust; namespace StringConversionAPI { @@ -68,7 +70,7 @@ public void ConfigureServices(IServiceCollection services) } // Register core high-performance unmanaged boundary service handler - services.AddSingleton(); + //services.AddSingleton(); services.AddControllers(); services.AddEndpointsApiExplorer(); diff --git a/Backend/CaseConversionAPI/RustLib/Cargo.toml b/Backend/CaseConversionAPI/RustLib/Cargo.toml new file mode 100644 index 0000000..5424405 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/Cargo.toml @@ -0,0 +1,11 @@ +[package] +name = "rust_lib" +version = "0.1.0" +edition = "2024" + +[lib] +# Combining both rlib (for tests) and cdylib (for FFI) +crate-type = ["rlib", "cdylib"] + +[dependencies] +# Your dependencies go here \ No newline at end of file diff --git a/Backend/CaseConversionAPI/RustLib/Scripts/build_and_test.sh b/Backend/CaseConversionAPI/RustLib/Scripts/build_and_test.sh new file mode 100755 index 0000000..137613c --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/Scripts/build_and_test.sh @@ -0,0 +1,110 @@ +#!/bin/bash + +# SPDX-License-Identifier: Apache-2.0 + +###################################################################### +# File : build_and_test.sh +# Author : Nitish Singh +# Created : 2026-06-07 +# +# Copyright (c) 2016-2026 Nitish Singh +# Licensed under the Apache License, Version 2.0 +# See LICENSE file in project root for license information +# +# Module : Build/Scripts +# Component : Rust Case Conversion Engine +# Platform : macOS / Linux +# Thread Safe : N/A +# API Status : Stable +# Version : 1.0.0 +# +# Description : Automated build validation script for the Rust +# Case Conversion Engine. +# +# Performs: +# 1. Source formatting validation +# 2. Static analysis via Clippy +# 3. Integration and unit test execution +# 4. Release DLL/shared library build +# 5. Artifact verification +# +# Notes : - Stops immediately on first failure +# : - Intended for local development and CI usage +# : - Produces cdylib artifacts for FFI consumers +# : - Suitable for GitHub Actions integration +# +# Generated Artifacts: +# : - librust_lib.dylib (macOS) +# : - librust_lib.so (Linux) +# : - rust_lib.dll (Windows) +# +# Revision History: +# -------------------------------------------------------------------- +# Version Date Author Description +# -------------------------------------------------------------------- +# 1.0.0 2026-06-07 Nitish Singh Initial implementation +###################################################################### + +set -e + +echo "======================================" +echo " Rust Case Conversion Library Build" +echo "======================================" + +echo "" +echo "[1/5] Formatting source..." +cargo fmt --all + +echo "" +echo "[2/5] Running static analysis..." +cargo clippy --all-targets --all-features -- -D warnings + +echo "" +echo "[3/5] Running tests..." +cargo test -- --nocapture + +echo "" +echo "[4/5] Building release DLL..." +cargo build --release + +echo "" +echo "[5/5] Listing generated artifacts..." +ls -lh ../target/release + + +echo "[6/5] Deploying artifact to .NET output directory..." + +# Destination root +DEST_PATH="../../DotNetAPI/bin/Release/net8.0" + +# 1. Check if the root .NET output directory exists +if [ ! -d "$DEST_PATH" ]; then + echo "Error: Directory $DEST_PATH does not exist." + exit 1 +fi + +# 2. Create the 'rust' subdirectory if it doesn't exist +# The -p flag ensures no error if it already exists and creates parents if needed +mkdir -p "$DEST_PATH/rust" + +# 3. Perform the copy +if [[ "$OSTYPE" == "darwin"* ]]; then + # macOS + cp "../target/release/librust_lib.dylib" "$DEST_PATH/rust/librust_lib.dylib" +elif [[ "$OSTYPE" == "linux-gnu"* ]]; then + # Linux + cp "../target/release/librust_lib.so" "$DEST_PATH/rust/librust_lib.so" +elif [[ "$OSTYPE" == "msys" || "$OSTYPE" == "win32" ]]; then + # Windows + cp "../target/release/rust_lib.dll" "$DEST_PATH/rust/librust_lib.dll" +else + echo "Unsupported OS: $OSTYPE" + exit 1 +fi + +echo "Deployment successful to $DEST_PATH/rust/" + +echo "" +echo "======================================" +echo " Build Successful" +echo "======================================" \ No newline at end of file diff --git a/Backend/CaseConversionAPI/RustLib/src/client.rs b/Backend/CaseConversionAPI/RustLib/src/client.rs new file mode 100644 index 0000000..c9ffccc --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/client.rs @@ -0,0 +1,61 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : client.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(1) + Strategy Complexity */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Client context for the Strategy Pattern. */ +/* Encapsulates a string conversion strategy and */ +/* delegates execution to the selected strategy */ +/* implementation at runtime. */ +/* */ +/* Design : Strategy Pattern */ +/* */ +/* Notes : - Owns a boxed strategy instance */ +/* : - Uses dynamic dispatch via trait objects */ +/* : - Decouples caller from concrete strategies */ +/* : - Thread-safe through Send + Sync trait bounds */ +/* : - Execution complexity depends on strategy */ +/* */ +/* Usage Flow : Factory -> Client -> Strategy -> Result */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +/// Strategy Pattern Context. +/// +/// Holds the selected string conversion strategy and +/// delegates conversion requests to it. +pub struct Client { + strategy: Box, +} + +impl Client { + /// Creates a new client with the specified strategy. + pub fn new(strategy: Box) -> Self { + Self { strategy } + } + + /// Executes the configured conversion strategy. + pub fn execute(&self, input: &str) -> String { + self.strategy.convert(input) + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/conversion_type.rs b/Backend/CaseConversionAPI/RustLib/src/conversion_type.rs new file mode 100644 index 0000000..1b2eea6 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/conversion_type.rs @@ -0,0 +1,70 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : conversion_type.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(1) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Enumerates all supported string conversion */ +/* operations available in the conversion engine. */ +/* */ +/* Design : Factory Pattern Support */ +/* */ +/* Notes : - Used by StringConversionFactory */ +/* : - Provides type-safe conversion selection */ +/* : - Prevents invalid strategy construction */ +/* : - Supports lightweight copying via Clone + Copy */ +/* : - Used by dispatcher and interop layers */ +/* */ +/* Supported Conversions: */ +/* : - Alternating */ +/* : - Capitalize */ +/* : - Lower */ +/* : - Upper */ +/* : - Sentence */ +/* : - Toggle */ +/* : - Reverse */ +/* : - RemoveVowels */ +/* : - RemoveSpaces */ +/* : - InvertWords */ +/* : - SnakeCase */ +/* : - KebabCase */ +/* : - LeetSpeak */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +/// Enumeration representing all supported string conversion +/// operations within the conversion engine. +#[repr(i32)] +#[derive(Clone, Copy, Debug, PartialEq, Eq)] +pub enum ConversionType { + Alternating = 1, + Capitalize = 2, + Lower = 3, + Upper = 4, + Sentence = 5, + Toggle = 6, + Reverse = 7, + RemoveVowels = 8, + RemoveSpaces = 9, + InvertWords = 10, + SnakeCase = 11, + KebabCase = 12, + LeetSpeak = 13, +} diff --git a/Backend/CaseConversionAPI/RustLib/src/cpp_adapter.rs b/Backend/CaseConversionAPI/RustLib/src/cpp_adapter.rs new file mode 100644 index 0000000..1c55ea2 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/cpp_adapter.rs @@ -0,0 +1,3 @@ +pub fn process_legacy_cpp(input: &str, _choice: i32) -> String { + format!("C++-processed: {}", input) +} diff --git a/Backend/CaseConversionAPI/RustLib/src/dispatcher.rs b/Backend/CaseConversionAPI/RustLib/src/dispatcher.rs new file mode 100644 index 0000000..78cd768 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/dispatcher.rs @@ -0,0 +1,101 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : dispatcher.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(1) + Strategy Complexity */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Central dispatcher for string conversion requests. */ +/* Maps conversion choices to conversion types, */ +/* creates the appropriate strategy via the factory, */ +/* and executes the conversion through the client. */ +/* */ +/* Design : Dispatcher + Factory + Strategy Pattern */ +/* */ +/* Notes : - Validates conversion choice input */ +/* : - Provides type-safe enum mapping */ +/* : - Delegates strategy creation to factory */ +/* : - Delegates execution to client context */ +/* : - Returns standardized error messages */ +/* : - Used by DLL interop layer */ +/* */ +/* Supported Choices: */ +/* : 1 -> Alternating */ +/* : 2 -> Capitalize */ +/* : 3 -> Lower */ +/* : 4 -> Upper */ +/* : 5 -> Sentence */ +/* : 6 -> Toggle */ +/* : 7 -> Reverse */ +/* : 8 -> RemoveVowels */ +/* : 9 -> RemoveSpaces */ +/* : 10 -> InvertWords */ +/* : 11 -> SnakeCase */ +/* : 12 -> KebabCase */ +/* : 13 -> LeetSpeak */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::client::Client; +use crate::conversion_type::ConversionType; +use crate::factory::StringConversionFactory; + +/// Maps an integer conversion choice to a strongly typed +/// ConversionType enumeration. +/// +/// Returns None when an invalid choice is supplied. +fn map_choice(choice: i32) -> Option { + match choice { + 1 => Some(ConversionType::Alternating), + 2 => Some(ConversionType::Capitalize), + 3 => Some(ConversionType::Lower), + 4 => Some(ConversionType::Upper), + 5 => Some(ConversionType::Sentence), + 6 => Some(ConversionType::Toggle), + 7 => Some(ConversionType::Reverse), + 8 => Some(ConversionType::RemoveVowels), + 9 => Some(ConversionType::RemoveSpaces), + 10 => Some(ConversionType::InvertWords), + 11 => Some(ConversionType::SnakeCase), + 12 => Some(ConversionType::KebabCase), + 13 => Some(ConversionType::LeetSpeak), + _ => None, + } +} + +/// Processes a string conversion request. +/// +/// # Arguments +/// +/// * `input` - Source string. +/// * `choice` - Numeric conversion selection. +/// +/// # Returns +/// +/// * `Ok(String)` - Converted output. +/// * `Err(&'static str)` - Standardized error code. +pub fn process_string(input: &str, choice: i32) -> Result { + let conversion = map_choice(choice).ok_or("ERROR_INVALID_CONVERSION_CHOICE")?; + + let strategy = StringConversionFactory::create(conversion); + + let client = Client::new(strategy); + + Ok(client.execute(input)) +} diff --git a/Backend/CaseConversionAPI/RustLib/src/factory.rs b/Backend/CaseConversionAPI/RustLib/src/factory.rs new file mode 100644 index 0000000..9fdfe0b --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/factory.rs @@ -0,0 +1,93 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : factory.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(1) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Factory responsible for constructing concrete */ +/* string conversion strategy objects at runtime. */ +/* Encapsulates strategy creation logic and */ +/* decouples callers from implementation details. */ +/* */ +/* Design : Factory Pattern */ +/* */ +/* Notes : - Creates strategy instances on demand */ +/* : - Returns boxed trait objects */ +/* : - Hides concrete implementation types */ +/* : - Supports runtime strategy selection */ +/* : - Used by dispatcher layer */ +/* : - Works with Strategy Pattern architecture */ +/* */ +/* Supported Strategies: */ +/* : - AlternatingCaseConversion */ +/* : - CapitalizeConversion */ +/* : - LowerCaseConversion */ +/* : - UpperCaseConversion */ +/* : - SentenceCaseConversion */ +/* : - ToggleCaseConversion */ +/* : - ReverseConversion */ +/* : - RemoveVowelsConversion */ +/* : - RemoveSpacesConversion */ +/* : - InvertWordsConversion */ +/* : - SnakeCaseConversion */ +/* : - KebabCaseConversion */ +/* : - LeetSpeakConversion */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::conversion_type::ConversionType; +use crate::strategies::*; + +/// Factory for creating string conversion strategies. +pub struct StringConversionFactory; + +impl StringConversionFactory { + /// Creates a concrete strategy instance corresponding + /// to the supplied conversion type. + pub fn create(conversion: ConversionType) -> Box { + match conversion { + ConversionType::Alternating => Box::new(AlternatingCaseConversion), + + ConversionType::Capitalize => Box::new(CapitalizeConversion), + + ConversionType::Lower => Box::new(LowerCaseConversion), + + ConversionType::Upper => Box::new(UpperCaseConversion), + + ConversionType::Sentence => Box::new(SentenceCaseConversion), + + ConversionType::Toggle => Box::new(ToggleCaseConversion), + + ConversionType::Reverse => Box::new(ReverseConversion), + + ConversionType::RemoveVowels => Box::new(RemoveVowelsConversion), + + ConversionType::RemoveSpaces => Box::new(RemoveSpacesConversion), + + ConversionType::InvertWords => Box::new(InvertWordsConversion), + + ConversionType::SnakeCase => Box::new(SnakeCaseConversion), + + ConversionType::KebabCase => Box::new(KebabCaseConversion), + + ConversionType::LeetSpeak => Box::new(LeetSpeakConversion), + } + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/ffi.rs b/Backend/CaseConversionAPI/RustLib/src/ffi.rs new file mode 100644 index 0000000..e3e7568 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/ffi.rs @@ -0,0 +1,214 @@ +/*********************************************************************/ +/* File : ffi.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Interop */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : C ABI wrapper exposing the Rust string conversion */ +/* engine for interoperability with C, C++, C#, and */ +/* other foreign language runtimes. */ +/* */ +/* Delegates requests to the dispatcher layer, which */ +/* performs conversion type validation, strategy */ +/* creation, and execution. */ +/* */ +/* Exported APIs: */ +/* : - process_string_dll() */ +/* : - free_string() */ +/* */ +/* Notes : - Stable C ABI using extern "C" */ +/* : - Designed for .NET P/Invoke interoperability */ +/* : - Enforces strict 5MB input size limit */ +/* : - Uses CString allocation for ABI safety */ +/* : - Caller owns returned memory */ +/* : - Returned memory must be released using */ +/* free_string() */ +/* : - Panic-safe boundary via catch_unwind() */ +/* : - Returns standardized error strings */ +/* : - TraceId reserved for future observability */ +/* : - UTF-8 validation enforced before processing */ +/* */ +/* Memory Safety Notes: */ +/* : - Ownership transferred through */ +/* CString::into_raw() */ +/* : - Memory reclaimed through */ +/* CString::from_raw() */ +/* : - No mixed allocator usage across boundaries */ +/* : - Panic isolation prevents unwinding across ABI */ +/* : - Null-pointer checks performed before dereference */ +/* */ +/* Error Codes: */ +/* : - ERROR_NULL_INPUT */ +/* : - ERROR_BUFFER_OVERFLOW_LIMIT_5MB */ +/* : - ERROR_NEGATIVE_CONVERSION_CHOICE */ +/* : - ERROR_INVALID_CONVERSION_CHOICE */ +/* : - ERROR_INVALID_UTF8 */ +/* : - ERROR_STRING_CONTAINS_NULL */ +/* : - ERROR_INTERNAL_EXCEPTION */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial Rust FFI layer */ +/* 1.1.0 2026-06-07 Nitish Singh Added UTF-8 validation */ +/* 1.2.0 2026-06-07 Nitish Singh Added panic isolation */ +/* 1.3.0 2026-06-07 Nitish Singh Added 5MB safety limit */ +/* 1.4.0 2026-06-07 Nitish Singh Added traceId parameter */ +/*********************************************************************/ + +use crate::dispatcher::process_string; + +use std::ffi::{CStr, CString}; +use std::os::raw::c_char; +use std::panic; + +//=================================================================== +// Constants: 5 MB Buffer Limit +//=================================================================== + +const MAX_INPUT_SIZE: usize = 5 * 1024 * 1024; + +//=================================================================== +// Helper Utilities (Internal Only) +//=================================================================== + +fn allocate_c_string(value: &str) -> *mut c_char { + match CString::new(value) { + Ok(s) => s.into_raw(), + Err(_) => CString::new("ERROR_STRING_CONTAINS_NULL") + .unwrap() + .into_raw(), + } +} + +fn safe_error(message: &str) -> *mut c_char { + allocate_c_string(message) +} + +//=================================================================== +// Exported DLL API (Extern "C") +//=================================================================== + +/// # Safety +/// +/// This function is part of a C ABI (FFI) boundary and accepts raw pointers +/// from external callers. The caller must ensure: +/// +/// - `input` points to a valid UTF-8 buffer of length `len` +/// - `trace_id` is either null or a valid null-terminated C string +/// - Pointers remain valid for the duration of the call +/// - Memory ownership rules are respected (see module documentation) +#[unsafe(no_mangle)] +pub unsafe extern "C" fn process_string_dll( + input: *const c_char, + len: usize, + choice: i32, + trace_id: *const c_char, +) -> *mut c_char { + let result = panic::catch_unwind(|| { + //----------------------------------------------------------- + // Null Input Check + //----------------------------------------------------------- + + if input.is_null() { + return safe_error("ERROR_NULL_INPUT"); + } + + //----------------------------------------------------------- + // Length Validation + //----------------------------------------------------------- + + if len > MAX_INPUT_SIZE { + return safe_error("ERROR_BUFFER_OVERFLOW_LIMIT_5MB"); + } + + //----------------------------------------------------------- + // Choice Validation + //----------------------------------------------------------- + + if choice < 0 { + return safe_error("ERROR_NEGATIVE_CONVERSION_CHOICE"); + } + + //----------------------------------------------------------- + // Convert Raw Buffer -> UTF-8 String + //----------------------------------------------------------- + + let bytes = unsafe { std::slice::from_raw_parts(input as *const u8, len) }; + + let input_str = match std::str::from_utf8(bytes) { + Ok(v) => v, + Err(_) => { + return safe_error("ERROR_INVALID_UTF8"); + } + }; + + //----------------------------------------------------------- + // Optional TraceId + //----------------------------------------------------------- + + let _trace_id = if !trace_id.is_null() { + unsafe { CStr::from_ptr(trace_id).to_string_lossy().into_owned() } + } else { + String::new() + }; + + //----------------------------------------------------------- + // Execute Conversion Pipeline + //----------------------------------------------------------- + + match process_string(input_str, choice) { + Ok(output) => allocate_c_string(&output), + + Err(error) => safe_error(error), + } + }); + + //--------------------------------------------------------------- + // Panic Protection + //--------------------------------------------------------------- + + match result { + Ok(ptr) => ptr, + + Err(_) => safe_error("ERROR_INTERNAL_EXCEPTION"), + } +} + +//=================================================================== +// Memory Release API +//=================================================================== + +/// # Safety +/// +/// This function frees memory previously allocated by `process_string_dll`. +/// +/// # Caller guarantees +/// - `ptr` must be either: +/// - a null pointer (safe no-op), OR +/// - a pointer returned by `CString::into_raw()` from this library +/// +/// # Undefined behavior +/// - Passing a pointer not allocated by this library +/// - Passing a pointer that has already been freed +#[unsafe(no_mangle)] +pub unsafe extern "C" fn free_string(ptr: *mut c_char) { + if ptr.is_null() { + return; + } + + unsafe { + drop(CString::from_raw(ptr)); + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/lib.rs b/Backend/CaseConversionAPI/RustLib/src/lib.rs new file mode 100644 index 0000000..1bacbc1 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/lib.rs @@ -0,0 +1,80 @@ +/* SPDX-License-Identifier: Apache-2.0 */ + +/*********************************************************************/ +/* File : lib.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Project : Word Case API */ +/* Component : Rust String Conversion Library */ +/* Thread Safe : Yes */ +/* API Status : Stable (Production) */ +/* Version : 1.1.0 */ +/* */ +/* Description : Root module for the Rust string conversion engine.*/ +/* Implements a polymorphic strategy pattern with */ +/* dynamic routing between native Rust logic and */ +/* legacy C++ modules via FFI. */ +/* */ +/* Architecture : */ +/* */ +/* [FFI Layer] ◄───► [Dispatcher (Hybrid Routing)] */ +/* │ │ */ +/* ▼ ▼ */ +/* [Rust Engine] [C++ Legacy Bridge] */ +/* │ │ */ +/* └────────┬─────────┘ */ +/* ▼ */ +/* [Strategy Factory] */ +/* │ */ +/* [Strategy Traits] */ +/* */ +/* Design Patterns: */ +/* : - Strategy Pattern (Execution) */ +/* : - Factory Pattern (Instantiation) */ +/* : - Dispatcher Pattern (A/B Routing) */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/* 1.1.0 2026-06-07 Nitish Singh FFI dynamic routing & stable */ +/*********************************************************************/ + +#![allow(non_snake_case)] + +// --- Module Declarations --- +pub mod client; +pub mod conversion_type; +pub mod cpp_adapter; +pub mod dispatcher; +pub mod factory; +pub mod ffi; +pub mod rust_logic; +pub mod strategies; // This holds your #[no_mangle] extern "C" functions + +// --- Public API Surface (Re-exports) --- +// This allows your tests to use `use rust_lib::StringConversionFactory;` +// instead of `use rust_lib::factory::StringConversionFactory;` +pub use crate::conversion_type::ConversionType; +pub use crate::dispatcher::process_string; +pub use crate::factory::StringConversionFactory; + +// Export strategies so tests can find them at `rust_lib::LowerCaseConversion` +pub use crate::strategies::alternating::AlternatingCaseConversion; +pub use crate::strategies::capitalize::CapitalizeConversion; +pub use crate::strategies::kebab_case::KebabCaseConversion; +pub use crate::strategies::leetspeak::LeetSpeakConversion; +pub use crate::strategies::lowercase::LowerCaseConversion; +pub use crate::strategies::remove_spaces::RemoveSpacesConversion; +pub use crate::strategies::remove_vowels::RemoveVowelsConversion; +pub use crate::strategies::reverse::ReverseConversion; +pub use crate::strategies::sentence_case::SentenceCaseConversion; +pub use crate::strategies::snake_case::SnakeCaseConversion; +pub use crate::strategies::toggle_case::ToggleCaseConversion; +pub use crate::strategies::uppercase::UpperCaseConversion; diff --git a/Backend/CaseConversionAPI/RustLib/src/rust_logic.rs b/Backend/CaseConversionAPI/RustLib/src/rust_logic.rs new file mode 100644 index 0000000..7040a57 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/rust_logic.rs @@ -0,0 +1,3 @@ +pub fn process_native(input: &str, _choice: i32) -> String { + format!("Rust-processed: {}", input) +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/alternating.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/alternating.rs new file mode 100644 index 0000000..7860bf6 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/alternating.rs @@ -0,0 +1,71 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : alternating.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Alternating case conversion strategy. */ +/* Converts alphabetic characters by alternating */ +/* between uppercase and lowercase while preserving */ +/* non-alphabetic characters unchanged. */ +/* */ +/* Example : "hello world" -> "HeLlO wOrLd" */ +/* : "rust123" -> "RuSt123" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Alternation state maintained locally */ +/* : - Non-alphabetic characters do not affect state */ +/* : - UTF-8 input supported */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct AlternatingCaseConversion; + +impl StringConversion for AlternatingCaseConversion { + fn convert(&self, input: &str) -> String { + let mut upper = true; + + input + .chars() + .map(|c| { + if c.is_whitespace() { + upper = true; + return c; + } + + if c.is_alphabetic() { + let out = if upper { + c.to_ascii_uppercase() + } else { + c.to_ascii_lowercase() + }; + + upper = !upper; + out + } else { + c + } + }) + .collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/capitalize.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/capitalize.rs new file mode 100644 index 0000000..2d125f4 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/capitalize.rs @@ -0,0 +1,62 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : capitalize.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Capitalization conversion strategy. */ +/* Converts the first character of every word to */ +/* uppercase and converts remaining characters to */ +/* lowercase. */ +/* */ +/* Example : "hello world" -> "Hello World" */ +/* : "RUST PROGRAMMING" -> "Rust Programming" */ +/* : "mIxEd CaSe" -> "Mixed Case" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Words are separated by whitespace */ +/* : - Handles empty input safely */ +/* : - UTF-8 aware capitalization */ +/* : - Preserves word ordering */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct CapitalizeConversion; + +impl StringConversion for CapitalizeConversion { + fn convert(&self, input: &str) -> String { + input + .split_whitespace() + .map(|word| { + let mut chars = word.chars(); + match chars.next() { + Some(first) => { + first.to_uppercase().collect::() + &chars.as_str().to_lowercase() + } + None => String::new(), + } + }) + .collect::>() + .join(" ") + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/invert_words.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/invert_words.rs new file mode 100644 index 0000000..8225cf5 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/invert_words.rs @@ -0,0 +1,83 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : invert_words.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Word inversion conversion strategy. */ +/* Reverses the order of words in the input string */ +/* while preserving the original word contents. */ +/* */ +/* Example : "hello world rust" */ +/* -> "rust world hello" */ +/* */ +/* : "one two three four" */ +/* -> "four three two one" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Words are separated by whitespace */ +/* : - Preserves individual word casing */ +/* : - Preserves individual word contents */ +/* : - UTF-8 compatible */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : invert_words.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/String */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Reverses characters of each word in the input */ +/* string while preserving original word order. */ +/* */ +/* Notes : - Splits input into whitespace-delimited words */ +/* : - Reverses each word independently */ +/* : - Preserves word ordering */ +/* : - Consecutive whitespace normalized to single */ +/* spaces, matching C++ implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct InvertWordsConversion; + +impl StringConversion for InvertWordsConversion { + fn convert(&self, input: &str) -> String { + input + .split_whitespace() + .map(|word| word.chars().rev().collect::()) + .collect::>() + .join(" ") + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/kebab_case.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/kebab_case.rs new file mode 100644 index 0000000..db80677 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/kebab_case.rs @@ -0,0 +1,53 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : snake_case.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Snake case conversion strategy. */ +/* Converts input text to lowercase and replaces */ +/* spaces with underscore characters ('_'). */ +/* */ +/* Example : "Hello World" */ +/* -> "hello-world" */ +/* */ +/* : "Rust Programming Language" */ +/* -> "rust-programming-language" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Converts all alphabetic characters to lowercase */ +/* : - Replaces space characters with underscores */ +/* : - Preserves non-space punctuation characters */ +/* : - UTF-8 compatible */ +/* : - Consecutive spaces produce consecutive */ +/* underscores in output */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct KebabCaseConversion; + +impl StringConversion for KebabCaseConversion { + fn convert(&self, input: &str) -> String { + input.to_lowercase().replace(' ', "-") + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/leetspeak.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/leetspeak.rs new file mode 100644 index 0000000..54783b3 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/leetspeak.rs @@ -0,0 +1,68 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : leetspeak.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : LeetSpeak conversion strategy. */ +/* Converts selected alphabetic characters into */ +/* common LeetSpeak (1337) numeric substitutions. */ +/* */ +/* Example : "Leet Speak" */ +/* -> "L337 5p34k" */ +/* */ +/* : "Rust Language" */ +/* -> "Ru57 L4ngu4g3" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Character mapping is case-insensitive */ +/* : - Preserves non-mapped characters unchanged */ +/* : - UTF-8 compatible */ +/* : - Current substitutions: */ +/* : a -> 4 */ +/* : e -> 3 */ +/* : i -> 1 */ +/* : o -> 0 */ +/* : s -> 5 */ +/* : t -> 7 */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct LeetSpeakConversion; + +impl StringConversion for LeetSpeakConversion { + fn convert(&self, input: &str) -> String { + input + .chars() + .map(|c| match c.to_ascii_lowercase() { + 'a' => '4', + 'e' => '3', + 'i' => '1', + 'o' => '0', + 's' => '5', + 't' => '7', + _ => c, + }) + .collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/lowercase.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/lowercase.rs new file mode 100644 index 0000000..88720ce --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/lowercase.rs @@ -0,0 +1,50 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : lowercase.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Lowercase conversion strategy. */ +/* Converts all alphabetic characters in the input */ +/* string to their lowercase equivalents. */ +/* */ +/* Example : "HELLO WORLD" */ +/* -> "hello world" */ +/* */ +/* : "Rust Programming" */ +/* -> "rust programming" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Preserves non-alphabetic characters */ +/* : - Unicode-aware lowercase conversion */ +/* : - UTF-8 compatible */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct LowerCaseConversion; + +impl StringConversion for LowerCaseConversion { + fn convert(&self, input: &str) -> String { + input.to_lowercase() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/mod.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/mod.rs new file mode 100644 index 0000000..3a3fb43 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/mod.rs @@ -0,0 +1,84 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : mod.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(1) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Defines the StringConversion strategy contract */ +/* and exports all concrete string conversion */ +/* strategy implementations. */ +/* */ +/* Design : Strategy Pattern */ +/* */ +/* Notes : - Central strategy registry module */ +/* : - Provides common trait abstraction */ +/* : - Re-exports all strategy implementations */ +/* : - Used by factory for runtime strategy creation */ +/* : - Send + Sync for thread-safe usage */ +/* : - Supports dynamic dispatch via trait objects */ +/* */ +/* Exported Strategies: */ +/* : - LowerCaseConversion */ +/* : - UpperCaseConversion */ +/* : - CapitalizeConversion */ +/* : - SentenceCaseConversion */ +/* : - ToggleCaseConversion */ +/* : - AlternatingCaseConversion */ +/* : - ReverseConversion */ +/* : - RemoveVowelsConversion */ +/* : - RemoveSpacesConversion */ +/* : - InvertWordsConversion */ +/* : - SnakeCaseConversion */ +/* : - KebabCaseConversion */ +/* : - LeetSpeakConversion */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +pub trait StringConversion: Send + Sync { + fn convert(&self, input: &str) -> String; +} + +pub mod alternating; +pub mod capitalize; +pub mod invert_words; +pub mod kebab_case; +pub mod leetspeak; +pub mod lowercase; +pub mod remove_spaces; +pub mod remove_vowels; +pub mod reverse; +pub mod sentence_case; +pub mod snake_case; +pub mod toggle_case; +pub mod uppercase; + +pub use alternating::AlternatingCaseConversion; +pub use capitalize::CapitalizeConversion; +pub use invert_words::InvertWordsConversion; +pub use kebab_case::KebabCaseConversion; +pub use leetspeak::LeetSpeakConversion; +pub use lowercase::LowerCaseConversion; +pub use remove_spaces::RemoveSpacesConversion; +pub use remove_vowels::RemoveVowelsConversion; +pub use reverse::ReverseConversion; +pub use sentence_case::SentenceCaseConversion; +pub use snake_case::SnakeCaseConversion; +pub use toggle_case::ToggleCaseConversion; +pub use uppercase::UpperCaseConversion; diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/remove_spaces.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/remove_spaces.rs new file mode 100644 index 0000000..eab5f63 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/remove_spaces.rs @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : remove_spaces.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Space removal conversion strategy. */ +/* Removes all space (' ') characters from the input */ +/* string while preserving all other characters. */ +/* */ +/* Example : "hello world" */ +/* -> "helloworld" */ +/* */ +/* : "rust programming language" */ +/* -> "rustprogramminglanguage" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Removes only literal space characters (' ') */ +/* : - Tabs and newlines are preserved */ +/* : - Preserves character ordering */ +/* : - UTF-8 compatible */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct RemoveSpacesConversion; + +impl StringConversion for RemoveSpacesConversion { + fn convert(&self, input: &str) -> String { + input.chars().filter(|c| *c != ' ').collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/remove_vowels.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/remove_vowels.rs new file mode 100644 index 0000000..5826085 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/remove_vowels.rs @@ -0,0 +1,57 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : remove_vowels.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Vowel removal conversion strategy. */ +/* Removes all English vowels from the input string */ +/* while preserving consonants, digits, punctuation, */ +/* and whitespace characters. */ +/* */ +/* Example : "Hello World" */ +/* -> "Hll Wrld" */ +/* */ +/* : "Rust Programming" */ +/* -> "Rst Prgrmmng" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Removes vowels: a, e, i, o, u */ +/* : - Case-insensitive vowel matching */ +/* : - Preserves character ordering */ +/* : - Preserves whitespace and punctuation */ +/* : - UTF-8 compatible */ +/* : - Non-English vowels are not removed */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct RemoveVowelsConversion; + +impl StringConversion for RemoveVowelsConversion { + fn convert(&self, input: &str) -> String { + input + .chars() + .filter(|c| !"aeiouAEIOU".contains(*c)) + .collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/reverse.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/reverse.rs new file mode 100644 index 0000000..a05afa5 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/reverse.rs @@ -0,0 +1,52 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : reverse.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Reverse string conversion strategy. */ +/* Reverses the order of characters in the input */ +/* string while preserving character contents. */ +/* */ +/* Example : "Hello World" */ +/* -> "dlroW olleH" */ +/* */ +/* : "Rust123" */ +/* -> "321tsuR" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Reverses character sequence */ +/* : - Preserves whitespace characters */ +/* : - Preserves punctuation characters */ +/* : - Unicode-aware character reversal */ +/* : - UTF-8 compatible */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct ReverseConversion; + +impl StringConversion for ReverseConversion { + fn convert(&self, input: &str) -> String { + input.chars().rev().collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/sentence_case.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/sentence_case.rs new file mode 100644 index 0000000..01cc0f5 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/sentence_case.rs @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : sentence_case.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Sentence case conversion strategy. */ +/* Converts the first character of the input string */ +/* to uppercase and converts all remaining characters */ +/* to lowercase. */ +/* */ +/* Example : "hELLO WORLD" */ +/* -> "Hello world" */ +/* */ +/* : "RUST PROGRAMMING LANGUAGE" */ +/* -> "Rust programming language" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Entire input is normalized to lowercase first */ +/* : - First character is then capitalized */ +/* : - Empty input is handled safely */ +/* : - Unicode-aware case conversion */ +/* : - UTF-8 compatible */ +/* */ +/* Limitations : - Only the first character of the entire string */ +/* is capitalized */ +/* : - Does not detect multiple sentences separated */ +/* by '.', '!' or '?' */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct SentenceCaseConversion; + +impl StringConversion for SentenceCaseConversion { + fn convert(&self, input: &str) -> String { + let lower = input.to_lowercase(); + + if lower.is_empty() { + return lower; + } + + let mut chars = lower.chars(); + let first = chars.next().unwrap(); + + first.to_uppercase().collect::() + chars.as_str() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/snake_case.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/snake_case.rs new file mode 100644 index 0000000..5a3701c --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/snake_case.rs @@ -0,0 +1,58 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : snake_case.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Snake case conversion strategy. */ +/* Converts input text to lowercase and replaces */ +/* space characters with underscores ('_'). */ +/* */ +/* Example : "Hello World" */ +/* -> "hello_world" */ +/* */ +/* : "Rust Programming Language" */ +/* -> "rust_programming_language" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Converts all alphabetic characters to lowercase */ +/* : - Replaces space characters with underscores */ +/* : - Preserves punctuation characters */ +/* : - UTF-8 compatible */ +/* : - Consecutive spaces become consecutive */ +/* underscores */ +/* */ +/* Limitations : - Handles only literal space characters (' ') */ +/* : - Does not normalize tabs or newlines */ +/* : - Does not convert camelCase or PascalCase */ +/* : - Intended as a simple snake_case transformation */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct SnakeCaseConversion; + +impl StringConversion for SnakeCaseConversion { + fn convert(&self, input: &str) -> String { + input.to_lowercase().replace(' ', "_") + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/toggle_case.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/toggle_case.rs new file mode 100644 index 0000000..d47d492 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/toggle_case.rs @@ -0,0 +1,67 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : toggle_case.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Toggle case conversion strategy. */ +/* Inverts the case of each ASCII alphabetic */ +/* character in the input string. */ +/* */ +/* Example : "Hello World" */ +/* -> "hELLO wORLD" */ +/* */ +/* : "RuSt123" */ +/* -> "rUsT123" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Lowercase letters become uppercase */ +/* : - Uppercase letters become lowercase */ +/* : - Digits and punctuation are preserved */ +/* : - Non-alphabetic characters are unchanged */ +/* : - UTF-8 compatible */ +/* */ +/* Limitations : - Uses ASCII-only case conversion */ +/* : - Non-ASCII alphabetic characters are not toggled */ +/* : (e.g. é, ü, Ω remain unchanged) */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct ToggleCaseConversion; + +impl StringConversion for ToggleCaseConversion { + fn convert(&self, input: &str) -> String { + input + .chars() + .map(|c| { + if c.is_ascii_lowercase() { + c.to_ascii_uppercase() + } else if c.is_ascii_uppercase() { + c.to_ascii_lowercase() + } else { + c + } + }) + .collect() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/src/strategies/uppercase.rs b/Backend/CaseConversionAPI/RustLib/src/strategies/uppercase.rs new file mode 100644 index 0000000..208c8fc --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/src/strategies/uppercase.rs @@ -0,0 +1,51 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : uppercase.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Core/Strategies */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes */ +/* Complexity : O(n) */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Uppercase conversion strategy. */ +/* Converts all alphabetic characters in the input */ +/* string to their uppercase equivalents. */ +/* */ +/* Example : "hello world" */ +/* -> "HELLO WORLD" */ +/* */ +/* : "Rust Programming" */ +/* -> "RUST PROGRAMMING" */ +/* */ +/* Notes : - Implements StringConversion strategy trait */ +/* : - Uses Strategy Design Pattern */ +/* : - Preserves non-alphabetic characters */ +/* : - Unicode-aware uppercase conversion */ +/* : - UTF-8 compatible */ +/* : - Safe for multi-byte Unicode characters */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial implementation */ +/*********************************************************************/ + +use crate::strategies::StringConversion; + +pub struct UpperCaseConversion; + +impl StringConversion for UpperCaseConversion { + fn convert(&self, input: &str) -> String { + input.to_uppercase() + } +} diff --git a/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs b/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs new file mode 100644 index 0000000..9f7b0c0 --- /dev/null +++ b/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs @@ -0,0 +1,245 @@ +// SPDX-License-Identifier: Apache-2.0 + +/*********************************************************************/ +/* File : integration_tests.rs */ +/* Author : Nitish Singh */ +/* Created : 2026-06-07 */ +/* */ +/* Copyright (c) 2016-2026 Nitish Singh */ +/* Licensed under the Apache License, Version 2.0 */ +/* See LICENSE file in project root for license information */ +/* */ +/* Module : Tests */ +/* Component : Case Conversion Engine */ +/* Thread Safe : Yes (isolated test execution) */ +/* Complexity : O(n) per conversion test */ +/* API Status : Stable */ +/* Version : 1.0.0 */ +/* */ +/* Description : Integration and FFI validation suite for the Rust */ +/* string conversion engine. Covers exported C ABI, */ +/* strategy implementations, dispatcher routing, */ +/* error handling, memory management, stress tests, */ +/* and conversion correctness validation. */ +/* */ +/* Test Groups : */ +/* : 1. FFI exported API tests */ +/* : 2. Conversion strategy tests */ +/* : 3. Dispatcher integration tests */ +/* : 4. Edge case validation */ +/* : 5. Invalid input testing */ +/* : 6. Stress and performance testing */ +/* : 7. Memory safety verification */ +/* */ +/* Notes : - Validates process_string_dll() ABI layer */ +/* : - Ensures free_string() correctness */ +/* : - Uses UTF-8 byte length validation */ +/* : - Covers full conversion pipeline */ +/* : - Includes null pointer safety checks */ +/* : - Verifies dispatcher integration */ +/* */ +/* Exported APIs Tested: */ +/* : - process_string_dll() */ +/* : - free_string() */ +/* : - process_string() */ +/* */ +/* Memory Safety Notes: */ +/* : - Validates CString::into_raw ownership */ +/* : - Validates CString::from_raw cleanup */ +/* : - Ensures null-safe free behavior */ +/* : - Prevents allocator mismatch across FFI */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0.0 2026-06-07 Nitish Singh Initial integration suite */ +/*********************************************************************/ + +use rust_lib::ffi::{free_string, process_string_dll}; + +use rust_lib::strategies::StringConversion; + +use std::ffi::{CStr, CString}; + +fn call_dll(input: &str, choice: i32) -> String { + let input_c = CString::new(input).unwrap(); + let trace = CString::new("test-trace-id").unwrap(); + + let ptr = unsafe { process_string_dll(input_c.as_ptr(), input.len(), choice, trace.as_ptr()) }; + + assert!(!ptr.is_null()); + + unsafe { + let output = CStr::from_ptr(ptr).to_string_lossy().into_owned(); + + free_string(ptr); + + output + } +} + +// ====================================================== +// Functional Tests +// ====================================================== + +#[test] +fn alternating_case() { + assert_eq!(call_dll("hello", 1), "HeLlO"); +} + +#[test] +fn lowercase() { + assert_eq!(call_dll("HELLO", 3), "hello"); +} + +#[test] +fn uppercase() { + assert_eq!(call_dll("hello", 4), "HELLO"); +} + +#[test] +fn sentence_case() { + assert_eq!(call_dll("hello world.", 5), "Hello world."); +} + +#[test] +fn reverse() { + assert_eq!(call_dll("hello", 7), "olleh"); +} + +#[test] +fn remove_spaces() { + assert_eq!(call_dll("hello world", 9), "helloworld"); +} + +#[test] +fn snake_case() { + assert_eq!(call_dll("hello world", 11), "hello_world"); +} + +#[test] +fn kebab_case() { + assert_eq!(call_dll("hello world", 12), "hello-world"); +} + +// ====================================================== +// Edge Cases +// ====================================================== + +#[test] +fn empty_string() { + assert_eq!(call_dll("", 4), ""); +} + +#[test] +fn single_character() { + assert_eq!(call_dll("a", 4), "A"); +} + +#[test] +fn special_characters() { + assert_eq!(call_dll("@#123 abc!", 4), "@#123 ABC!"); +} + +// ====================================================== +// Invalid Inputs +// ====================================================== + +#[test] +fn invalid_choice() { + let result = call_dll("hello", 999); + + assert!(result.contains("ERROR"), "Unexpected result: {}", result); +} + +#[test] +fn null_input() { + let trace = CString::new("trace").unwrap(); + + let ptr = unsafe { process_string_dll(std::ptr::null(), 0, 1, trace.as_ptr()) }; + + let result = unsafe { + let value = CStr::from_ptr(ptr).to_string_lossy().into_owned(); + + free_string(ptr); + + value + }; + + assert_eq!(result, "ERROR_NULL_INPUT"); +} + +// ====================================================== +// Stress Tests +// ====================================================== + +#[test] +fn large_input() { + let input = "a".repeat(10_000); + + let result = call_dll(&input, 4); + + assert_eq!(result.len(), input.len()); +} + +#[test] +fn multiple_calls() { + for _ in 0..1000 { + assert_eq!(call_dll("test", 4), "TEST"); + } +} + +#[test] +fn free_null_safe() { + unsafe { + free_string(std::ptr::null_mut()); + } +} + +use rust_lib::{ + AlternatingCaseConversion, LowerCaseConversion, ReverseConversion, ToggleCaseConversion, + process_string, +}; + +#[test] +fn lowercase_conversion() { + let strategy = LowerCaseConversion; + + assert_eq!(strategy.convert("HeLLo WoRLD!"), "hello world!"); +} + +#[test] +fn alternating_conversion() { + let strategy = AlternatingCaseConversion; + + assert_eq!(strategy.convert("hello world"), "HeLlO WoRlD"); +} + +#[test] +fn toggle_case() { + let strategy = ToggleCaseConversion; + + assert_eq!(strategy.convert("TeStInG"), "tEsTiNg"); +} + +#[test] +fn reverse_conversion() { + let strategy = ReverseConversion; + + assert_eq!(strategy.convert("Hello"), "olleH"); +} + +#[test] +fn process_string_alternating() { + let output = process_string("Hello World!", 1).unwrap(); + + assert_eq!(output, "HeLlO WoRlD!"); +} + +#[test] +fn process_string_reverse() { + let output = process_string("Hello World!", 7).unwrap(); + + assert_eq!(output, "!dlroW olleH"); +} diff --git a/README.md b/README.md index ba37321..cdde360 100644 --- a/README.md +++ b/README.md @@ -278,6 +278,29 @@ The native engine serves as the high-performance execution core of the platform, * macOS → `libProcessStringDLL.dylib` * Linux → `libProcessStringDLL.so` +#### Multi-Engine Execution Architecture + +The native processing layer now supports multiple interchangeable execution engines. + +| Engine | Language | ABI Layer | Shared Library | +|-------- |----------|---------- |---------- | +| Native Engine V1 | C++17 | C ABI | `.dll` / `.so` / `.dylib` | +| Native Engine V2 | Rust | FFI (`extern "C"`) | `.dll` / `.so` / `.dylib` | + +Both engines implement equivalent processing contracts and are executed through the same managed orchestration pipeline. + +```text +HTTP Request + ↓ +.NET Gateway + ↓ +Engine Selection Layer + ↓ +C++ Engine OR Rust Engine + ↓ +Response +``` + #### Native Build Orchestration To maintain deterministic CI/CD behavior across platforms, the project uses a centralized orchestration script. The workflow performs native compilation on macOS while delegating Linux and Windows builds to containerized toolchains. @@ -363,13 +386,20 @@ The system applies multiple architectural and behavioral design patterns to main * Facade Pattern: The managed ProcessStringService acts as a proxy for the native processing engine. It encapsulates platform-specific library loading, symbol resolution, marshaling, and execution concerns while exposing a clean, idiomatic C# interface to application consumers. Provides a unified interface over validation, telemetry, native execution, and error handling. -* Ports and Adapters (Hexagonal Architecture): The managed service layer defines stable application contracts while native processing engines, telemetry providers, and API endpoints act as interchangeable adapters around the core business workflow. +* Ports and Adapters (Hexagonal Architecture): Native processing engines act as interchangeable adapters behind a stable application boundary. Both Rust and C++ implementations satisfy the same contract, allowing engine substitution without modifying API consumers. * Dependency Injection Pattern: ASP.NET Core's built-in IoC container is used to manage service lifetimes, dependency graphs, and runtime composition of telemetry, configuration, authentication, and native orchestration services. +* Polyglot Adapter Architecture: +Rust and C++ engines act as interchangeable adapters behind a stable ABI boundary, enabling engine substitution, benchmarking, and incremental migration. + #### Behavioral and Execution Patterns -* Strategy Pattern: Encapsulates individual string transformation algorithms behind a common interface, enabling runtime selection of conversion behaviors without modifying the execution pipeline. +* Strategy Pattern: Encapsulates interchangeable processing strategies behind a common contract. This pattern is used at two levels: + * Conversion strategies for string transformation behavior + * Runtime engine selection between Rust and C++ implementations + +The managed orchestration layer dynamically selects implementations without modifying API consumers. * Factory Pattern: Centralizes strategy creation and decouples the client layer from concrete implementation details, simplifying extensibility and reducing dependency coupling. @@ -526,6 +556,79 @@ This engine is engineered for high-density concurrent processing and long-durati | Peak Efficiency | 1,000,000 | 8 | 7,242 RPS | 2.66ms | Full Hardware Saturation | | Endurance | 1,500,000 | 100 | 7,067 RPS | 41.0ms | Long-duration stability | +--- + +### Native Engine Performance Comparison + +To validate the polyglot execution architecture, identical workloads were executed through both native engines using the same managed orchestration layer and equivalent API workflows. + +#### Benchmark Results + +| Engine | Execution Time (s) | Relative Performance | +|-------- |-------- |-------- | +| RustEngine | 0.0012545 | Baseline (Fastest) | +| CppEngine | 0.0023065 | ~1.84x slower | + +#### Observations + +* RustEngine completed execution in approximately **54% of the time required by the CppEngine**. +* Under this benchmark scenario, the Rust implementation demonstrated approximately **1.8× higher throughput efficiency**. +* Both engines executed identical logical workflows through the same managed orchestration pipeline, ensuring functional parity during measurement. + +#### Performance Interpretation + +These benchmark results suggest several contributing factors: + +##### Memory Management Characteristics + +Rust's ownership model and deterministic memory safety mechanisms may reduce runtime overhead associated with allocation patterns and buffer handling across the FFI boundary. + +##### String Processing Efficiency + +The Rust standard library provides highly optimized UTF-8 string handling and iterator pipelines which may provide advantages for transformation-heavy workloads. + +##### Compiler Optimization Pipeline + +Differences in compiler optimization strategies may contribute to performance variation: + +* Rust optimizations: + * `opt-level=3` + * Link Time Optimization (LTO) + * Aggressive inlining + +* C++ optimizations: + * Dependent on compiler flags + * STL allocation patterns + * Build configuration differences + +##### ABI Boundary Cost + +Since both engines are invoked through the same .NET orchestration layer, benchmark differences primarily reflect native execution characteristics rather than API overhead. + +#### Important Benchmark Notes + +These measurements represent workload-specific observations rather than universal language comparisons. + +Variables influencing future benchmark outcomes include: + +* Input size distribution +* Allocation patterns +* Compiler configuration +* CPU architecture +* Native library loading behavior +* String encoding complexity + +#### Architectural Outcome + +The benchmark validates one of the primary goals of the multi-engine architecture: + +* Compare interchangeable native engines +* Evaluate runtime performance characteristics +* Preserve API compatibility across implementations +* Enable future engine selection strategies + +--- + #### Key Performance Drivers * Core Scaling Efficiency: Scaling from 4 to 8 VUs produced a 44% throughput increase, demonstrating efficient saturation of the Apple M2 Performance Cores while avoiding the scheduling overhead commonly observed in managed runtimes. diff --git a/cpp_results.json b/cpp_results.json new file mode 100644 index 0000000..901cc0c --- /dev/null +++ b/cpp_results.json @@ -0,0 +1,126 @@ +{ + "root_group": { + "groups": {}, + "checks": { + "is status 200": { + "name": "is status 200", + "path": "::is status 200", + "id": "548d37ca5f33793206f7832e7cea54fb", + "passes": 0, + "fails": 100000 + }, + "transformed to uppercase": { + "path": "::transformed to 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722.4063749999999, + "avg": 705.4367360816327, + "min": 395.781208, + "med": 711.1330419999999, + "max": 756.508626, + "p(90)": 719.0520630000001 + } + } +} \ No newline at end of file diff --git a/writeFile.js b/writeFile.js index c4a5911..ee78139 100644 --- a/writeFile.js +++ b/writeFile.js @@ -2,15 +2,18 @@ import http from 'k6/http'; import { check } from 'k6'; export const options = { - vus:100, - iterations: 2000000, + vus:8, + iterations: 100000, }; +const engineType = __ENV.ENGINE || "RustEngine"; + const payload = JSON.stringify({ // Verify if your backend needs "Text" or "text" text: "Hello", // Ensure 4 is the correct ID for Uppercase in your C++ Enum - choice: 4 + choice: 4, + engineType: engineType }); const params = { @@ -19,8 +22,8 @@ const params = { export default function () { // Use localhost if running k6 from your Mac; host.docker.internal if in a container - //const url = 'http://loadbalancer/api/WordCase/convert'; - const url = 'http://host.docker.internal:80/api/WordCase/convert'; + const url = 'http://loadbalancer/api/WordCase/convert'; + //const url = 'http://host.docker.internal:80/api/WordCase/convert'; const res = http.post(url, payload, params); check(res, { From a2e7dcf052ece3cdeef143a4cf8d4cce1a9c1d11 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Mon, 8 Jun 2026 13:33:06 +0530 Subject: [PATCH 02/24] Potential fix for pull request finding 'CodeQL / Useless assignment to local variable' Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com> --- .../DotNetAPI/Services/Rust/ProcessRustEngineService.cs | 1 - 1 file changed, 1 deletion(-) diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index 1a0d63c..903c45a 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -109,7 +109,6 @@ public RustEngineService() _libraryHandle = LoadLibraryWithRetry(fullPath); - string prefix = RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "_" : ""; IntPtr procAddr = NativeLibrary.GetExport(_libraryHandle, "process_string_dll"); IntPtr freeProcAddr = NativeLibrary.GetExport(_libraryHandle, "free_string"); From b9354ad26e1e7d2901fd8e3a0ff6fff8e8a30e25 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Mon, 8 Jun 2026 13:33:22 +0530 Subject: [PATCH 03/24] Potential fix for pull request finding 'CodeQL / Virtual call in constructor or destructor' Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com> --- .../DotNetAPI/Services/Rust/ProcessRustEngineService.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index 903c45a..65dc65b 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -122,7 +122,7 @@ public RustEngineService() /// ~RustEngineService() { - Dispose(false); + DisposeCore(false); } #endregion From 2445d35feb7df3bdc139aaf9688ccf9724565d4d Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Mon, 8 Jun 2026 13:33:30 +0530 Subject: [PATCH 04/24] Potential fix for pull request finding 'CodeQL / Call to 'System.IO.Path.Combine' may silently drop its earlier arguments' Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com> --- .../DotNetAPI/Services/Rust/ProcessRustEngineService.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index 65dc65b..06b9e70 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -105,7 +105,7 @@ public RustEngineService() RuntimeInformation.IsOSPlatform(OSPlatform.OSX) ? "librust_lib.dylib" : throw new PlatformNotSupportedException("The executing operating system platform is not supported."); - string fullPath = Path.Combine(AppContext.BaseDirectory, subDir, dllName); + string fullPath = Path.Join(AppContext.BaseDirectory, subDir, dllName); _libraryHandle = LoadLibraryWithRetry(fullPath); From d1bde09fcac8e473d2b1d5aea0ca50bfcfda2494 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Mon, 8 Jun 2026 22:51:16 +0530 Subject: [PATCH 05/24] Potential fix for pull request finding 'CodeQL / Generic catch clause' Co-authored-by: Copilot Autofix powered by AI <62310815+github-advanced-security[bot]@users.noreply.github.com> --- .../Services/Rust/ProcessRustEngineService.cs | 26 ++++++++++++++++++- 1 file changed, 25 insertions(+), 1 deletion(-) diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index 06b9e70..4350032 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -346,7 +346,31 @@ private static IntPtr LoadLibraryWithRetry(string path) return handle; } } - catch (Exception ex) + catch (DllNotFoundException ex) + { + lastException = ex; + + activity?.AddEvent(new ActivityEvent( + $"Native load failed on attempt {attempt}: {ex.Message}" + )); + } + catch (BadImageFormatException ex) + { + lastException = ex; + + activity?.AddEvent(new ActivityEvent( + $"Native load failed on attempt {attempt}: {ex.Message}" + )); + } + catch (FileNotFoundException ex) + { + lastException = ex; + + activity?.AddEvent(new ActivityEvent( + $"Native load failed on attempt {attempt}: {ex.Message}" + )); + } + catch (EntryPointNotFoundException ex) { lastException = ex; From f75459a58b22ab6ea9a9a9f44a0c83700154c929 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 10:53:15 +0530 Subject: [PATCH 06/24] Release docs --- Docs/releases/v5.0.0.md | 113 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 113 insertions(+) create mode 100644 Docs/releases/v5.0.0.md diff --git a/Docs/releases/v5.0.0.md b/Docs/releases/v5.0.0.md new file mode 100644 index 0000000..513faa3 --- /dev/null +++ b/Docs/releases/v5.0.0.md @@ -0,0 +1,113 @@ +# Release Process & Versioning Logic + +This document outlines the procedure for promoting the Case Conversion API through version milestones. + +## 1. Versioning Strategy (SemVer) + +We follow Semantic Versioning (`MAJOR.MINOR.PATCH`): + +* **MAJOR:** Significant architectural shifts, runtime model changes, or native engine expansions (e.g., Polyglot Execution Architecture, Multi-Engine Runtime Support). +* **MINOR:** Performance milestones, new processing capabilities, or infrastructure enhancements. +* **PATCH:** Bug fixes, workflow improvements, dependency updates, and documentation corrections. + +### Current Release Target + +**Version:** `v3.0.0` + +**Release Theme:** +Polyglot Native Execution Architecture & Rust Engine Integration + +Key changes: + +* Added Rust native processing engine +* Introduced interchangeable multi-engine execution model +* Added runtime engine selection capability +* Introduced cross-engine benchmarking workflow +* Expanded ABI interoperability layer +* Added comparative benchmark validation between Rust and C++ engines +* Extended native orchestration architecture + +--- + +## 2. Release Procedure + +To trigger a Production Release on the ARM64 macOS runner: + +### Step 1: Update Release Notes + +Modify the `body` section in: + +```text +.github/workflows/release.yml +``` + +### Step 2: Validate Native Engines + +Ensure both native implementations build successfully: + +```bash +cargo build --release + +cmake --build . +``` + +Validate: + +* Rust shared library generation +* C++ shared library generation +* ABI compatibility +* Integration tests +* Benchmark execution + +### Step 3: Commit Changes + +Ensure: + +* Documentation updated +* Benchmarks committed +* Release notes updated +* Native artifacts validated + +### Step 4: Tag & Push + +```bash +git tag -a v3.0.0 -m "Major Release: Polyglot Native Architecture & Rust Engine Integration" + +git push origin v3.0.0 +``` + +--- + +## 3. Hardware Alignment + +Native releases are compiled on `macos-latest` to validate Apple Silicon compatibility while preserving cross-platform artifact generation. + +Build targets include: + +* macOS (`.dylib`) +* Linux (`.so`) +* Windows (`.dll`) + +Optimization goals: + +* Apple Silicon Performance Core alignment +* Cross-platform ABI consistency +* Deterministic native execution behavior +* Runtime engine interchangeability + +--- + +## 4. Benchmark Validation Requirements + +Release validation now includes comparative engine benchmarking. + +| Engine | Execution Time (Seconds) | +| ---------- | ------------------------ | +| RustEngine | 0.0012545 | +| CppEngine | 0.0023065 | + +Observed benchmark outcome: + +* RustEngine completed execution faster for the measured workload +* Approximate performance improvement: **1.8×** +* Benchmark results are workload-specific and not universal language comparisons From ee0a0ee59cd06aa13921636582a3b5463d87e60f Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 10:55:43 +0530 Subject: [PATCH 07/24] Added release docs --- Docs/releases/v5.0.0.md | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Docs/releases/v5.0.0.md b/Docs/releases/v5.0.0.md index 513faa3..c0fe0f9 100644 --- a/Docs/releases/v5.0.0.md +++ b/Docs/releases/v5.0.0.md @@ -12,7 +12,7 @@ We follow Semantic Versioning (`MAJOR.MINOR.PATCH`): ### Current Release Target -**Version:** `v3.0.0` +**Version:** `v5.0.0` **Release Theme:** Polyglot Native Execution Architecture & Rust Engine Integration From 66c600919bfadbfaf9ecb62b67baa6bd91b911e3 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 13:47:15 +0530 Subject: [PATCH 08/24] Added the file to resolve error --- .../DotNetAPI/Services/Rust/ProcessRustEngineService.cs | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index 4350032..f78936a 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -122,7 +122,7 @@ public RustEngineService() /// ~RustEngineService() { - DisposeCore(false); + Dispose(false); } #endregion From 6dda038d66da6dce81f81df890c6a0f5db86f839 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 14:11:16 +0530 Subject: [PATCH 09/24] Added rust engine for DLL injection --- .../workflows/full-stack-orchestration.yml | 63 ++++++++++++++++++- .../Services/Rust/ProcessRustEngineService.cs | 4 ++ 2 files changed, 64 insertions(+), 3 deletions(-) diff --git a/.github/workflows/full-stack-orchestration.yml b/.github/workflows/full-stack-orchestration.yml index ac739b2..b05d86c 100644 --- a/.github/workflows/full-stack-orchestration.yml +++ b/.github/workflows/full-stack-orchestration.yml @@ -108,10 +108,31 @@ jobs: with: dotnet-version: '8.0.x' - - name: Restore & Publish .NET API + - name: Clean .NET Build run: | - dotnet restore Backend/CaseConversionAPI/DotNetAPI - dotnet publish Backend/CaseConversionAPI/DotNetAPI -c Release -o ./publish + dotnet clean Backend/CaseConversionAPI/DotNetAPI -c Release + + - name: Remove Build Artifacts + shell: bash + run: | + find Backend/CaseConversionAPI -type d \( -name bin -o -name obj \) -exec rm -rf {} + || true + + - name: Restore .NET Dependencies + run: | + dotnet restore Backend/CaseConversionAPI/DotNetAPI --force + + - name: Build .NET API + run: | + dotnet build Backend/CaseConversionAPI/DotNetAPI \ + -c Release \ + --no-restore + + - name: Publish .NET API + run: | + dotnet publish Backend/CaseConversionAPI/DotNetAPI \ + -c Release \ + --no-build \ + -o ./publish # ABI Bridge (Artifact Injection) - name: Inject Native Artifacts @@ -132,6 +153,42 @@ jobs: name: DotNetAPI-${{ matrix.os }} path: ./publish/ + # ------------------------------------------------------------ + # RUST NATIVE ENGINE and dotnet PUBLISH + # ------------------------------------------------------------ + + - name: Install Rust Toolchain + uses: dtolnay/rust-toolchain@stable + + - name: Build Rust Library + working-directory: Backend/CaseConversionAPI/RustLib + run: cargo build --release + + - name: Create Rust Runtime Directory + shell: bash + run: | + mkdir -p ./publish/rust + + - name: Copy Rust Library (Linux) + if: runner.os == 'Linux' + run: | + cp Backend/CaseConversionAPI/RustLib/target/release/librust_lib.so \ + ./publish/rust/ + + - name: Copy Rust Library (macOS) + if: runner.os == 'macOS' + run: | + cp Backend/CaseConversionAPI/RustLib/target/release/librust_lib.dylib \ + ./publish/rust/ + + - name: Copy Rust Library (Windows) + if: runner.os == 'Windows' + shell: pwsh + run: | + Copy-Item ` + Backend/CaseConversionAPI/RustLib/target/release/rust_lib.dll ` + ./publish/rust/ + # ------------------------------------------------------------ # JOB 2: FRONTEND VALIDATION # ------------------------------------------------------------ diff --git a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs index f78936a..b0ff32e 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Services/Rust/ProcessRustEngineService.cs @@ -281,6 +281,10 @@ protected virtual void Dispose(bool disposing) { if (!_disposed) { + if (disposing) + { + // Dispose managed resources here (e.g., managed timers, event handlers) + } if (_libraryHandle != IntPtr.Zero) { NativeLibrary.Free(_libraryHandle); From dcbe484d223a53cf122846e50657e1ba909a5e91 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 14:19:40 +0530 Subject: [PATCH 10/24] removed hardcoded visual studio from the CI --- .github/workflows/full-stack-orchestration.yml | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) diff --git a/.github/workflows/full-stack-orchestration.yml b/.github/workflows/full-stack-orchestration.yml index b05d86c..f770235 100644 --- a/.github/workflows/full-stack-orchestration.yml +++ b/.github/workflows/full-stack-orchestration.yml @@ -93,11 +93,10 @@ jobs: - name: Configure DLL (Windows) if: runner.os == 'Windows' run: | - cmake -S Backend/CaseConversionAPI/CppLib ` - -B Backend/CaseConversionAPI/CppLib/build_dll ` - -DCMAKE_BUILD_TYPE=Release ` - -DPROCESSSTRING_EXPORTS=ON ` - -G "Visual Studio 17 2022" -A x64 + cmake -S Backend/CaseConversionAPI/CppLib ` + -B Backend/CaseConversionAPI/CppLib/build_dll ` + -DCMAKE_BUILD_TYPE=Release ` + -DPROCESSSTRING_EXPORTS=ON - name: Build DLL run: cmake --build Backend/CaseConversionAPI/CppLib/build_dll --config Release --parallel From fcb8c89505bb571f6f50d00179d0b6cb36d5cef2 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 14:23:43 +0530 Subject: [PATCH 11/24] removed hardcoded visual studio from the CI --- .github/workflows/full-stack-orchestration.yml | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/.github/workflows/full-stack-orchestration.yml b/.github/workflows/full-stack-orchestration.yml index f770235..a7efe44 100644 --- a/.github/workflows/full-stack-orchestration.yml +++ b/.github/workflows/full-stack-orchestration.yml @@ -90,13 +90,16 @@ jobs: -B Backend/CaseConversionAPI/CppLib/build_dll \ -DCMAKE_BUILD_TYPE=Release + - name: Setup MSVC + uses: ilammy/msvc-dev-cmd@v1 + - name: Configure DLL (Windows) if: runner.os == 'Windows' run: | cmake -S Backend/CaseConversionAPI/CppLib ` -B Backend/CaseConversionAPI/CppLib/build_dll ` - -DCMAKE_BUILD_TYPE=Release ` - -DPROCESSSTRING_EXPORTS=ON + -G "NMake Makefiles" ` + -DCMAKE_BUILD_TYPE=Release - name: Build DLL run: cmake --build Backend/CaseConversionAPI/CppLib/build_dll --config Release --parallel From b29dfd27ab8a91aa48012424d16a2e9a82765203 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Wed, 17 Jun 2026 14:32:59 +0530 Subject: [PATCH 12/24] removed hardcoded visual studio from the CI --- .github/workflows/full-stack-orchestration.yml | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) diff --git a/.github/workflows/full-stack-orchestration.yml b/.github/workflows/full-stack-orchestration.yml index a7efe44..9e91c69 100644 --- a/.github/workflows/full-stack-orchestration.yml +++ b/.github/workflows/full-stack-orchestration.yml @@ -124,17 +124,10 @@ jobs: dotnet restore Backend/CaseConversionAPI/DotNetAPI --force - name: Build .NET API - run: | - dotnet build Backend/CaseConversionAPI/DotNetAPI \ - -c Release \ - --no-restore + run: dotnet build Backend/CaseConversionAPI/DotNetAPI -c Release --no-restore - name: Publish .NET API - run: | - dotnet publish Backend/CaseConversionAPI/DotNetAPI \ - -c Release \ - --no-build \ - -o ./publish + run: dotnet publish Backend/CaseConversionAPI/DotNetAPI -c Release --no-build -o ./publish # ABI Bridge (Artifact Injection) - name: Inject Native Artifacts From 3af59e38cc3c6e43a8cb302bd8b1b2fee74b8c09 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:11:12 +0530 Subject: [PATCH 13/24] Added files --- .../workflows/native-engine-ci_Non_DLL.yml | 39 +++++- .../CaseConversionAPI/CppLib/CMakeLists.txt | 125 ++++++------------ .../CppLib/src/AlternatingCaseConversion.cpp | 4 +- .../CppLib/src/CapitalizeWordsConversion.cpp | 4 +- .../CppLib/src/ConversionResult.cpp | 12 +- .../CppLib/src/InvertWordsConversion.cpp | 1 + .../CppLib/src/KebabCaseConversion.cpp | 4 +- .../CppLib/src/LowerCaseConversion.cpp | 3 +- .../CppLib/src/ProcessString.cpp | 1 - .../CppLib/src/ProcessStringDLL.cpp | 30 +++-- .../CppLib/src/SourceTemplate.txt | 4 +- .../CppLib/src/UpperCaseConversion.cpp | 4 +- .../CppLib/src/sourcecode.cpp | 2 +- .../Middleware/GlobalExceptionMiddleware.cs | 1 + .../Middleware/RequestLoggingMiddleware.cs | 1 + .../CaseConversionAPI/DotNetAPI/Program.cs | 8 +- .../RustLib/tests/integration_tests.rs | 15 ++- .../Tests/CppTests/AdvStrTestDLL.cpp | 49 +------ .../AdvancedStringConversionTests.cpp | 6 - .../src/Lexis.Core/include/CaseConverter.hpp | 10 +- .../Lexis.Core/include/LexisSpellCheckDLL.hpp | 19 +-- .../src/Lexis.Core/include/SpellChecker.hpp | 8 +- .../src/Lexis.Core/include/Trie.hpp | 11 +- .../src/Lexis.Core/src/Export.cpp | 13 +- .../src/Lexis.Core/src/LexisSpellCheckDLL.cpp | 45 ++++--- .../src/Lexis.Core/src/SpellChecker.cpp | 2 - .../Lexis.Core.Tests/SpellCheckerTestDll.cpp | 6 + .../Lexis.Core.Tests/SpellCheckerTests.cpp | 6 + Docs/performance/ARCH_DEEP_DIVE.md | 10 +- 29 files changed, 188 insertions(+), 255 deletions(-) diff --git a/.github/workflows/native-engine-ci_Non_DLL.yml b/.github/workflows/native-engine-ci_Non_DLL.yml index dbe361c..2680296 100644 --- a/.github/workflows/native-engine-ci_Non_DLL.yml +++ b/.github/workflows/native-engine-ci_Non_DLL.yml @@ -29,13 +29,18 @@ # 1.4 2026-05-12 Nitish Singh Refactored Header & Log Logic */ #*********************************************************************/ -name: C++ CI CaseConversionAPI - All Platforms (Local App) +name: C++ CI CaseConversionAPI - All Platforms on: push: branches: ["main"] + paths: &shared + - 'Backend/CaseConversionAPI/CppLib/' + - 'Backend/CaseConversionAPI/RustLib/' + - '.github/workflows/cpp-local-app-validation.yml' pull_request: branches: ["main"] + paths: *shared concurrency: group: ${{ github.workflow }}-${{ github.ref }} @@ -44,6 +49,7 @@ concurrency: jobs: build-and-test: strategy: + fail-fast: false matrix: os: [ubuntu-latest, windows-latest, macos-latest] runs-on: ${{ matrix.os }} @@ -52,31 +58,51 @@ jobs: env: BUILD_DIR: Backend/CaseConversionAPI/CppLib/build CPP_ROOT: Backend/CaseConversionAPI/CppLib + RUST_ROOT: Backend/CaseConversionAPI/RustLib steps: + + # ------------------------------------------------------------ + # SOURCE ACQUISITION + # ------------------------------------------------------------ + - name: Checkout repository uses: actions/checkout@v4 # ------------------------------------------------------------ - # Resource Initialization & Toolchain Setup + # Workflow Initialization # ------------------------------------------------------------ + - name: Initialize Workflow Logs shell: bash run: | TIMESTAMP=$(date -u +"%Y-%m-%dT%H:%M:%SZ") echo "{\"timestamp\": \"$TIMESTAMP\", \"event\": \"MATRIX_INIT\", \"os\": \"${{ matrix.os }}\"}" + + # ------------------------------------------------------------ + # Toolchain Setup + # ------------------------------------------------------------ + + - name: Setup CMake + uses: jwlawson/actions-setup-cmake@v1.14 + with: + cmake-version: "3.26.4" - name: Install compiler & CMake (Linux) if: runner.os == 'Linux' - run: sudo apt-get update && sudo apt-get install -y build-essential cmake jq + run: sudo apt-get update + sudo apt-get install -y build-essential cmake jq - name: Install CMake (macOS) if: runner.os == 'macOS' run: brew install cmake - - name: Install CMake (Windows) - if: runner.os == 'Windows' - run: choco install cmake ninja --installargs 'ADD_CMAKE_TO_PATH=System' --yes + - name: Setup MSVC Environment + if: runner.os == 'Windows' + uses: ilammy/msvc-dev-cmd@v1 + + - name: Install Rust Toolchain + uses: dtolnay/rust-toolchain@stable # ------------------------------------------------------------ # Workspace Cleanup & Config Injection @@ -116,6 +142,7 @@ jobs: # ------------------------------------------------------------ # Native Test Execution (CTEST Matrix) # ------------------------------------------------------------ + - name: Run tests (Linux/macOS) if: runner.os != 'Windows' run: ctest -V --output-on-failure --test-dir ${{ env.BUILD_DIR }} diff --git a/Backend/CaseConversionAPI/CppLib/CMakeLists.txt b/Backend/CaseConversionAPI/CppLib/CMakeLists.txt index 76cace3..2f24f35 100644 --- a/Backend/CaseConversionAPI/CppLib/CMakeLists.txt +++ b/Backend/CaseConversionAPI/CppLib/CMakeLists.txt @@ -1,89 +1,43 @@ # ----------------------------------------------------------------------------- -# CMake Configuration - Hardware-Aware Case Conversion Engine +# CMake Configuration - StringConversion Native Engine # Project : StringConversion -# Component : Cross-Platform Native Core + GoogleTest Harness -# Architecture : Static Core + Shared DLL Bridge + CLI + Test Runtime +# Component : Core Library + CLI + GoogleTest Validation # ----------------------------------------------------------------------------- # VERSION HISTORY # Version | Date | Author | Description # --------|------------|---------------|---------------------------------------- -# 1.0.0 | 2026-04-14 | Nitish Singh | Initial native orchestration baseline. -# 1.1.0 | 2026-05-09 | Nitish Singh | Added Apple Silicon optimization flags -# | and AddressSanitizer integration. -# 1.2.0 | 2026-05-20 | Nitish Singh | Added Windows MinGW static runtime -# | linking for containerized execution. -# 1.3.0 | 2026-05-28 | Nitish Singh | Added clang-format automation target -# | and cross-platform formatting support. +# 1.0.0 | 2026-04-14 | Nitish Singh | Initial native CMake orchestration +# | with GoogleTest integration. +# 1.1.0 | 2026-05-28 | Nitish Singh | Added automated clang-format target +# | for recursive source/test formatting. # ----------------------------------------------------------------------------- -# BUILD STRATEGY -# * Static Core Library : Shared reusable conversion engine -# * Shared DLL Bridge : .NET interoperability export layer -# * CLI Runtime : Standalone native execution target -# * GoogleTest Harness : Integrated validation framework -# * MinGW Static Linking : Portable Windows runtime generation -# * Clang-Format Integration : Automated source formatting pipeline -# * AddressSanitizer Support : Native debug-time memory diagnostics +# BUILD ARCHITECTURE +# * Static Core Library : Shared string conversion engine +# * CLI Runtime : Native executable entry point +# * GoogleTest Integration : Unit + advanced validation suite +# * Clang-Format Automation : Consistent code-style enforcement +# * Recursive Source Discovery : Automated formatting coverage # ----------------------------------------------------------------------------- cmake_minimum_required(VERSION 3.14) -set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreadedDLL") +cmake_policy(SET CMP0135 NEW) -if(POLICY CMP0135) - cmake_policy(SET CMP0135 NEW) -endif() - -# 1. Initialize the project profile first so system variables exist project(StringConversion) set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED ON) enable_testing() -# 2. Apply explicit static linking constraints globally for cross-compilation -# -------------------------------------------------------- -# Runtime / Linking Strategy -# -------------------------------------------------------- - -if(MSVC) - - # Using dynamic MSVC runtime consistently across all targets - set(CMAKE_MSVC_RUNTIME_LIBRARY "MultiThreadedDLL") - - # GoogleTest must match the same runtime model - set(gtest_force_shared_crt ON CACHE BOOL "" FORCE) - -elseif(MINGW) - - # MinGW-specific static runtime linking - set(CMAKE_EXE_LINKER_FLAGS - "${CMAKE_EXE_LINKER_FLAGS} -static -static-libgcc -static-libstdc++") - - set(CMAKE_SHARED_LINKER_FLAGS - "${CMAKE_SHARED_LINKER_FLAGS} -static -static-libgcc -static-libstdc++") - -endif() - -# 3. Restrict AddressSanitizer strictly to native explicit Debug builds -if(CMAKE_BUILD_TYPE MATCHES Debug) - if(CMAKE_CXX_COMPILER_ID MATCHES "GNU|Clang") - message(STATUS "Enabling AddressSanitizer for Debug build") - set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fsanitize=address -fno-omit-frame-pointer -g") - set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fsanitize=address") - set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -fsanitize=address") - endif() -endif() - # --------------------------- -# Global Settings +# Include directories # --------------------------- include_directories(include) -set(CMAKE_POSITION_INDEPENDENT_CODE ON) # --------------------------- -# 1. Core Logic: StringConversionLib (STATIC) +# Library: StringConversionLib # --------------------------- -add_library(StringConversionLib STATIC +add_library(StringConversionLib src/AlternatingCaseConversion.cpp src/CapitalizeWordsConversion.cpp src/Client.cpp @@ -102,56 +56,51 @@ add_library(StringConversionLib STATIC src/ToggleCaseConversion.cpp src/UpperCaseConversion.cpp ) -target_include_directories(StringConversionLib PUBLIC include) - -# --------------------------- -# 2. The Bridge DLL: ProcessStringDLL (SHARED) -# --------------------------- -add_library(ProcessStringDLL SHARED src/ProcessStringDLL.cpp) -target_compile_definitions(ProcessStringDLL PRIVATE PROCESSSTRING_EXPORTS) -target_link_libraries(ProcessStringDLL PRIVATE StringConversionLib) -set_target_properties(ProcessStringDLL PROPERTIES PREFIX "lib") +target_include_directories(StringConversionLib PUBLIC include) # --------------------------- -# 3. Main Application (CLI) +# Main Application # --------------------------- add_executable(app src/sourcecode.cpp) target_link_libraries(app StringConversionLib) # --------------------------- -# 4. GoogleTest Setup +# GoogleTest Setup # --------------------------- include(FetchContent) + +# Force GoogleTest to use the same runtime on Windows +set(gtest_force_shared_crt ON CACHE BOOL "" FORCE) + + FetchContent_Declare( googletest URL https://github.com/google/googletest/archive/main.zip ) + +# Make GoogleTest available FetchContent_MakeAvailable(googletest) # --------------------------- -# 5. Test Executable +# Test Executable # --------------------------- add_executable(runTests ${PROJECT_SOURCE_DIR}/../Tests/CppTests/StringConversionTests.cpp ${PROJECT_SOURCE_DIR}/../Tests/CppTests/AdvancedStringConversionTests.cpp ) -target_link_libraries(runTests StringConversionLib gtest gtest_main) -# Force the test runner to link dependencies statically under MinGW -if(MINGW) - target_link_options(runTests PRIVATE - "-static" - "-static-libgcc" - "-static-libstdc++" - ) -endif() +# Link the library and GoogleTest +target_link_libraries(runTests StringConversionLib gtest gtest_main) +# --------------------------- +# Register Tests with CTest +# --------------------------- add_test(NAME AllTests COMMAND runTests) -# --------------------------- +# =================================================================== # 6. Code Formatting (Clang-Format Automation) -# --------------------------- +# =================================================================== find_program(CLANG_FORMAT_EXE NAMES clang-format HINTS /opt/homebrew/bin /usr/local/bin @@ -159,13 +108,17 @@ find_program(CLANG_FORMAT_EXE if(CLANG_FORMAT_EXE) message(STATUS "Found clang-format: ${CLANG_FORMAT_EXE}") + file(GLOB_RECURSE ALL_FORMAT_FILES "${CMAKE_CURRENT_SOURCE_DIR}/src/*.cpp" "${CMAKE_CURRENT_SOURCE_DIR}/include/*.hpp" "${PROJECT_SOURCE_DIR}/../Tests/CppTests/*.cpp" ) + add_custom_target(format COMMAND ${CLANG_FORMAT_EXE} -i -style=LLVM ${ALL_FORMAT_FILES} - COMMENT "Auto-formatting all C++ engine source..." + COMMENT "Auto-formatting C++ engine, application, and test suites..." ) +else() + message(WARNING "clang-format executable not found. 'format' target will not be available.") endif() \ No newline at end of file diff --git a/Backend/CaseConversionAPI/CppLib/src/AlternatingCaseConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/AlternatingCaseConversion.cpp index 135fe19..f3d5fdd 100644 --- a/Backend/CaseConversionAPI/CppLib/src/AlternatingCaseConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/AlternatingCaseConversion.cpp @@ -45,11 +45,10 @@ AlternatingCaseConversion::convert(const std::string &input) const { LowerCaseConversion lowerConv; UpperCaseConversion upperConv; - std::string finalResult; // Renamed for clarity + std::string finalResult; bool upper = true; for (char c : input) { - // Standardize check using isalpha for better practice if (std::isalpha(static_cast(c))) { std::string temp(1, c); @@ -69,6 +68,5 @@ AlternatingCaseConversion::convert(const std::string &input) const { } } } - return ConversionResult(finalResult.c_str()); } \ No newline at end of file diff --git a/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp index 73bb0db..85c0bcf 100644 --- a/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp @@ -55,11 +55,9 @@ CapitalizeWordsConversion::convert(const std::string &input) const { result += " "; } - // Convert whole word to lowercase first word = ConversionResult(lowerConv.convert(word)) - .get_c_str(); // Get C-string from ConversionResult + .get_c_str(); - // Capitalize first letter using UpperCaseConversion std::string firstChar(1, word[0]); firstChar = ConversionResult(upperConv.convert(firstChar)).get_c_str(); word[0] = firstChar[0]; diff --git a/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp b/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp index 1f43894..d2db3db 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp @@ -21,9 +21,10 @@ /* Provides deep copy and move semantics for safe */ /* transfer across ABI boundaries. */ /* */ -/* Notes : - Ensures deterministic memory cleanup via delete[] */ -/* : - Designed for interoperability with managed runtimes*/ -/* : - Null-safe handling across all operations */ +/* Notes : - Ensures deterministic memory cleanup via delete[] */ +/* : - Designed for interoperability with managed */ +/* runtimes */ +/* : - Null-safe handling across all operations */ /* : - Implements Rule of Five */ /* */ /* Revision History: */ @@ -57,7 +58,9 @@ ConversionResult::ConversionResult(const char *input) { /* Destructor */ /*********************************************************************/ -ConversionResult::~ConversionResult() { delete[] data; } +ConversionResult::~ConversionResult() { + delete[] data; +} /*********************************************************************/ /* Copy Constructor */ @@ -86,7 +89,6 @@ ConversionResult &ConversionResult::operator=(const ConversionResult &other) { std::memcpy(new_data, other.data, length + 1); } - // Clean up old data and assign new delete[] data; data = new_data; } diff --git a/Backend/CaseConversionAPI/CppLib/src/InvertWordsConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/InvertWordsConversion.cpp index ad331e0..6b758f2 100644 --- a/Backend/CaseConversionAPI/CppLib/src/InvertWordsConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/InvertWordsConversion.cpp @@ -33,6 +33,7 @@ /*********************************************************************/ /* Dependencies */ /*********************************************************************/ + #include "InvertWordsConversion.hpp" #include #include diff --git a/Backend/CaseConversionAPI/CppLib/src/KebabCaseConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/KebabCaseConversion.cpp index 44ff6ae..6703f6d 100644 --- a/Backend/CaseConversionAPI/CppLib/src/KebabCaseConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/KebabCaseConversion.cpp @@ -20,9 +20,9 @@ /* replacing spaces with hyphens and converting all */ /* characters to lowercase. */ /* */ -/* Notes : - Reuses LowerCaseConversion implementation */ +/* Notes : - Reuses LowerCaseConversion implementation */ /* : - Converts spaces into hyphens */ -/* : - Preserves multiple consecutive separators */ +/* : - Preserves multiple consecutive separators */ /* */ /* Revision History: */ /* ----------------------------------------------------------------- */ diff --git a/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp index 8ff3aaa..23b0968 100644 --- a/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp @@ -41,9 +41,8 @@ ConversionResult LowerCaseConversion::convert(const std::string &input) const { for (char &c : result) { if (c >= 'A' && c <= 'Z') { - c = c + ('a' - 'A'); // ASCII conversion + c = c + ('a' - 'A'); } - // Non-alphabetic characters are unchanged } return ConversionResult(result.c_str()); diff --git a/Backend/CaseConversionAPI/CppLib/src/ProcessString.cpp b/Backend/CaseConversionAPI/CppLib/src/ProcessString.cpp index cf099ef..9959f7a 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ProcessString.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ProcessString.cpp @@ -79,7 +79,6 @@ ConversionResult processString(const std::string &input, int choiceInt) { ConversionChoice choice = static_cast(choiceInt); - // Map enum to ConversionType ConversionType type = mapChoiceToType(choice); client.setStrategy(StringConversionFactory::create(type)); diff --git a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp index e8e92c3..05fc56f 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp @@ -66,22 +66,24 @@ #include #include -//=================================================================== -// Constants: 5 MB Buffer Limit -//=================================================================== +/*********************************************************************/ +/* Constants: 5 MB Buffer Limit: Hardcoded +/*********************************************************************/ + namespace { constexpr size_t MAX_INPUT_SIZE = 5 * 1024 * 1024; } -//=================================================================== -// Helper Utilities (internal, not exported - C++ only) -//=================================================================== +/*********************************************************************/ +/* Helper Utilities (internal, not exported - C++ only) +/*********************************************************************/ static char *allocateCString(const std::string &str) { char *output = static_cast(std::malloc(str.size() + 1)); - if (!output) + if (!output) { return nullptr; - + } + std::memcpy(output, str.c_str(), str.size() + 1); return output; } @@ -91,9 +93,9 @@ static const char *safeError(const char *msg) { return err ? err : "FATAL_ALLOCATION_FAILURE"; } -//=================================================================== -// Conversion Mapping (Internal - C++ only) -//=================================================================== +/*********************************************************************/ +/* Conversion Mapping (Internal - C++ only) +/*********************************************************************/ static bool mapConversionType(ConversionChoice choice, ConversionType &type) noexcept { @@ -142,9 +144,9 @@ static bool mapConversionType(ConversionChoice choice, } } -//=================================================================== -// Exported DLL API (Extern "C" for C# interop) -//=================================================================== +/*********************************************************************/ +/* Exported DLL API (Extern "C" for C# interop) +/*********************************************************************/ extern "C" { diff --git a/Backend/CaseConversionAPI/CppLib/src/SourceTemplate.txt b/Backend/CaseConversionAPI/CppLib/src/SourceTemplate.txt index 4f56bd4..b0577fd 100644 --- a/Backend/CaseConversionAPI/CppLib/src/SourceTemplate.txt +++ b/Backend/CaseConversionAPI/CppLib/src/SourceTemplate.txt @@ -5,14 +5,14 @@ /* Author : [AUTHOR_NAME] */ /* Created : [YYYY-MM-DD] */ /* */ -/* Copyright (c) 2016-2026 [ORGANIZATION_OR_PROJECT] */ +/* Copyright (c) 2016-2026 [ORGANIZATION_OR_PROJECT] */ /* Licensed under the Apache License, Version 2.0 */ /* See LICENSE file in project root for license information */ /* */ /* Module : Core/String */ /* Component : Case Conversion Engine */ /* Thread Safe : Yes */ -/* Complexity : O(n) */ +/* Complexity : O(n) */ /* API Status : Stable */ /* Exception Safety : Basic Guarantee */ /* */ diff --git a/Backend/CaseConversionAPI/CppLib/src/UpperCaseConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/UpperCaseConversion.cpp index c75323b..7b12487 100644 --- a/Backend/CaseConversionAPI/CppLib/src/UpperCaseConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/UpperCaseConversion.cpp @@ -20,7 +20,7 @@ /* uppercase format using ASCII conversion. */ /* */ /* Notes : - ASCII difference between upper and lower is 32 */ -/* : - Preserves non-alphabetic characters */ +/* : - Preserves non-alphabetic characters */ /* : - Character-wise transformation in linear time */ /* */ /* Revision History: */ @@ -41,7 +41,7 @@ ConversionResult UpperCaseConversion::convert(const std::string &input) const { for (char &c : result) { if (c >= 'a' && c <= 'z') { - c = c - ('a' - 'A'); // ASCII conversion + c = c - ('a' - 'A'); } } diff --git a/Backend/CaseConversionAPI/CppLib/src/sourcecode.cpp b/Backend/CaseConversionAPI/CppLib/src/sourcecode.cpp index 7ab9fec..01a9aa6 100644 --- a/Backend/CaseConversionAPI/CppLib/src/sourcecode.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/sourcecode.cpp @@ -23,7 +23,7 @@ /* */ /* Notes : - Uses ProcessString dispatcher */ /* : - Demonstrates runtime selection of conversions */ -/* : - Simple CLI driver for validation/testing */ +/* : - Simple CLI driver for validation/testing */ /* */ /* Revision History: */ /* ----------------------------------------------------------------- */ diff --git a/Backend/CaseConversionAPI/DotNetAPI/Middleware/GlobalExceptionMiddleware.cs b/Backend/CaseConversionAPI/DotNetAPI/Middleware/GlobalExceptionMiddleware.cs index e69de29..4b9179e 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Middleware/GlobalExceptionMiddleware.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Middleware/GlobalExceptionMiddleware.cs @@ -0,0 +1 @@ +// to be implemented \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Middleware/RequestLoggingMiddleware.cs b/Backend/CaseConversionAPI/DotNetAPI/Middleware/RequestLoggingMiddleware.cs index e69de29..4b9179e 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Middleware/RequestLoggingMiddleware.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Middleware/RequestLoggingMiddleware.cs @@ -0,0 +1 @@ +// to be implemented \ No newline at end of file diff --git a/Backend/CaseConversionAPI/DotNetAPI/Program.cs b/Backend/CaseConversionAPI/DotNetAPI/Program.cs index 989acc6..d0ef9a8 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Program.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Program.cs @@ -169,19 +169,13 @@ }); }); -// Register Core Components within Stateless Lifetime Boundaries -builder.Services.AddSingleton(); -// 1. To register specific implementations as themselves +builder.Services.AddSingleton(); builder.Services.AddSingleton(); builder.Services.AddSingleton(); - -// 2. To register all implementations as the interface to support IEnumerable injection builder.Services.AddSingleton(); builder.Services.AddSingleton(); -// 3. To keep your factory logic if you still need to resolve a default "provider" -// You can keep this if your WordCaseController needs to know which one is the "primary" builder.Services.AddScoped(serviceProvider => { var config = serviceProvider.GetRequiredService(); diff --git a/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs b/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs index 9f7b0c0..0cb6c41 100644 --- a/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs +++ b/Backend/CaseConversionAPI/RustLib/tests/integration_tests.rs @@ -83,11 +83,6 @@ fn call_dll(input: &str, choice: i32) -> String { // Functional Tests // ====================================================== -#[test] -fn alternating_case() { - assert_eq!(call_dll("hello", 1), "HeLlO"); -} - #[test] fn lowercase() { assert_eq!(call_dll("HELLO", 3), "hello"); @@ -98,11 +93,21 @@ fn uppercase() { assert_eq!(call_dll("hello", 4), "HELLO"); } +#[test] +fn capitalize() { + assert_eq!(call_dll("hello world", 2), "Hello World") +} + #[test] fn sentence_case() { assert_eq!(call_dll("hello world.", 5), "Hello world."); } +#[test] +fn alternating_case() { + assert_eq!(call_dll("hello", 1), "HeLlO"); +} + #[test] fn reverse() { assert_eq!(call_dll("hello", 7), "olleh"); diff --git a/Backend/CaseConversionAPI/Tests/CppTests/AdvStrTestDLL.cpp b/Backend/CaseConversionAPI/Tests/CppTests/AdvStrTestDLL.cpp index 9a084f0..ebe0e96 100644 --- a/Backend/CaseConversionAPI/Tests/CppTests/AdvStrTestDLL.cpp +++ b/Backend/CaseConversionAPI/Tests/CppTests/AdvStrTestDLL.cpp @@ -18,8 +18,9 @@ /* */ /* Description : Google Test suite validating the DLL interop layer */ /* of the string conversion engine. Covers all exposed */ -/* C-style API conversions, edge cases, invalid inputs,*/ -/* stress scenarios, and memory management behavior. */ +/* C-style API conversions, edge cases, invalid */ +/* inputs, stress scenarios, and memory management */ +/* behavior. */ /* */ /* Test Groups : */ /* 1. Functional DLL conversion tests */ @@ -33,50 +34,6 @@ /* : - Validates full strategy coverage via DLL layer */ /*********************************************************************/ -// SPDX-License-Identifier: Apache-2.0 - -/*********************************************************************/ -/* File : StringConversionTests.cpp */ -/* Author : Nitish Singh */ -/* Created : 2026-04-11 */ -/* */ -/* Copyright (c) 2026 Nitish Singh */ -/* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ -/* */ -/* Module : Tests */ -/* Component : Case Conversion Engine */ -/* Thread Safe : Yes (read-only test execution) */ -/* Complexity : O(n) per conversion */ -/* API Status : Stable */ -/* Exception Safety : N/A (test layer) */ -/* */ -/* Description : Unit tests for String Conversion library using */ -/* Google Test framework. Covers basic conversions, */ -/* advanced conversions, factory creation, strategy */ -/* pattern behavior, processString API, and edge */ -/* cases. */ -/* */ -/* Test Groups : */ -/* 1. Basic conversion tests */ -/* 2. Advanced conversion tests */ -/* 3. Edge case tests */ -/* 4. Factory tests */ -/* 5. Client strategy tests */ -/* 6. ProcessString integration tests */ -/* 7. Logging tests */ -/* */ -/* Notes : Requires GoogleTest and linked conversion library. */ -/* : Uses TestHelpers::logConversion for trace output */ -/* : and debugging validation. */ -/* */ -/* Revision History: */ -/* ----------------------------------------------------------------- */ -/* Version Date Author Description */ -/* ----------------------------------------------------------------- */ -/* 1.0 2026-04-11 Nitish Singh Initial test suite */ -/*********************************************************************/ - /*********************************************************************/ /* Dependencies */ /*********************************************************************/ diff --git a/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp b/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp index 3adb15a..31444e2 100644 --- a/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp +++ b/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp @@ -40,9 +40,6 @@ #include -// --------------------------- -// Core Includes -// --------------------------- #include "AlternatingCaseConversion.hpp" #include "CapitalizeWordsConversion.hpp" #include "ConversionResult.hpp" @@ -54,9 +51,6 @@ #include "ToggleCaseConversion.hpp" #include "UpperCaseConversion.hpp" -// --------------------------- -// Design Pattern / Framework -// --------------------------- #include "Client.hpp" #include "ProcessString.hpp" #include "StringConversionFactory.hpp" diff --git a/Backend/TextOps.Service/src/Lexis.Core/include/CaseConverter.hpp b/Backend/TextOps.Service/src/Lexis.Core/include/CaseConverter.hpp index bcd8253..569f342 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/include/CaseConverter.hpp +++ b/Backend/TextOps.Service/src/Lexis.Core/include/CaseConverter.hpp @@ -7,18 +7,18 @@ /* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ +/* See LICENSE file in project root for license information */ /* */ /* Module : Core/Text */ /* Component : Case Conversion */ -/* Thread Safe : No (Concurrent reads safe, writes mutating trie not) */ +/* Thread Safe : No (Concurrent reads safe, writes mutating trie not)*/ /* Complexity : O(m) for lookup where m is word length */ /* API Status : Stable */ /* Exception Safety : Basic Guarantee */ /* */ -/* Description : Provides a unified hybrid case conversion engine matching */ -/* an internal character Trie against external Nuspell */ -/* dictionary modules. */ +/* Description : Provides a unified hybrid case conversion engine */ +/* matching an internal character Trie against */ +/* external Nuspell dictionary modules. */ /* */ /* Notes : None. */ /* */ diff --git a/Backend/TextOps.Service/src/Lexis.Core/include/LexisSpellCheckDLL.hpp b/Backend/TextOps.Service/src/Lexis.Core/include/LexisSpellCheckDLL.hpp index f19582a..40184d2 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/include/LexisSpellCheckDLL.hpp +++ b/Backend/TextOps.Service/src/Lexis.Core/include/LexisSpellCheckDLL.hpp @@ -4,21 +4,22 @@ /* File : LexisSpellCheckDLL.hpp */ /* Author : Nitish Singh */ /* Created : 2026-05-25 */ -/* */ +/* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ -/* */ +/* See LICENSE file in project root for license information */ +/* */ /* Module : Interop/Native */ /* Component : Spell Check Engine Boundary */ -/* Thread Safe : No (Trie and Nuspell configurations are instance bound) */ -/* Complexity : O(1) for layer dispatch */ +/* Thread Safe : No (Trie and Nuspell configurations are instance */ +/* bound) */ +/* Complexity : O(1) for layer dispatch */ /* API Status : Stable */ /* Exception Safety : Strong Guarantee */ -/* */ -/* Description : Declares exported native DLL interface used for */ -/* unmanaged and C# P/Invoke-based interactive spell */ -/* checking, lifecycle validation, and trie mutations. */ +/* */ +/* Description : Declares exported native DLL interface used for */ +/* unmanaged and C# P/Invoke-based interactive spell */ +/* checking, lifecycle validation, and trie mutations. */ /*********************************************************************/ #ifndef LEXIS_SPELLCHECK_DLL_HPP diff --git a/Backend/TextOps.Service/src/Lexis.Core/include/SpellChecker.hpp b/Backend/TextOps.Service/src/Lexis.Core/include/SpellChecker.hpp index 945e237..1070443 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/include/SpellChecker.hpp +++ b/Backend/TextOps.Service/src/Lexis.Core/include/SpellChecker.hpp @@ -7,17 +7,17 @@ /* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ +/* See LICENSE file in project root for license information */ /* */ /* Module : Core/Text */ /* Component : Spell Check Engine */ -/* Thread Safe : No (Concurrent reads safe, writes mutating trie not) */ +/* Thread Safe : No (Concurrent reads safe, writes mutating trie not)*/ /* Complexity : O(m) for lookup where m is word length */ /* API Status : Stable */ /* Exception Safety : Basic Guarantee */ /* */ -/* Description : Provides hybrid spellchecking capabilities using a */ -/* fast local Trie fallback alongside an advanced */ +/* Description : Provides hybrid spellchecking capabilities using a */ +/* fast local Trie fallback alongside an advanced */ /* Nuspell dictionary backend. */ /* */ /* Notes : Relies on external .aff and .dic Nuspell assets. */ diff --git a/Backend/TextOps.Service/src/Lexis.Core/include/Trie.hpp b/Backend/TextOps.Service/src/Lexis.Core/include/Trie.hpp index 92bb072..73e7c20 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/include/Trie.hpp +++ b/Backend/TextOps.Service/src/Lexis.Core/include/Trie.hpp @@ -7,19 +7,19 @@ /* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ +/* See LICENSE file in project root for license information */ /* */ /* Module : Core/Text */ /* Component : Spell Check Engine */ -/* Thread Safe : No (Concurrent reads safe, writes mutating trie not) */ +/* Thread Safe : No (Concurrent reads safe, writes mutating trie not)*/ /* Complexity : O(m) for lookup/insert where m is word length */ /* API Status : Stable */ /* Exception Safety : Basic Guarantee */ /* */ -/* Description : Header file providing a minimal, fast Trie-based */ +/* Description : Header file providing a minimal, fast Trie-based */ /* dictionary structure for standalone lookups. */ /* */ -/* Notes : Lightweight version omitting heavy dynamic backends. */ +/* Notes : Lightweight version omitting heavy dynamic backends.*/ /* */ /* Revision History: */ /* ----------------------------------------------------------------- */ @@ -58,8 +58,7 @@ struct TrieNode { */ class SpellChecker { private: - std::shared_ptr root; ///< Root node tracking internal Trie paths - + std::shared_ptr root; public: /** * @brief Constructs a new SpellChecker object. diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp index d5798c6..d0a9f85 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp @@ -7,7 +7,7 @@ /* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ +/* See LICENSE file in project root for license information */ /* */ /* Module : Core/Text */ /* Component : Spell Check Engine Application */ @@ -43,10 +43,8 @@ int main() { using namespace Lexis::SpellCheck; SpellChecker checker; - // 1. Load your persistent personal dictionary checker.LoadFromFile(); - // 2. Load the main Nuspell dictionary if (!checker.LoadDictionary("/usr/share/hunspell/en_US")) { std::cout << "Warning: Could not load Nuspell dictionary. Suggestions disabled." << std::endl; } @@ -56,22 +54,18 @@ int main() { std::cout << "\nEnter word to spellcheck (or 'exit' to quit): "; std::cin >> input; - // Check for exit condition if (input == "exit") { break; } - // Step A: Check Nuspell first SpellResult result = checker.Check(input); if (result.isCorrect) { std::cout << " [✓] '" << input << "' is spelled correctly (Nuspell)." << std::endl; } - // Step B: If Nuspell fails, check if it's in our personal Trie else if (checker.Contains(input)) { std::cout << " [✓] '" << input << "' found in your personal dictionary." << std::endl; } - // Step C: Misspelled everywhere else { std::cout << " [✗] '" << input << "' is misspelled!" << std::endl; @@ -83,22 +77,19 @@ int main() { std::cout << std::endl; } - // Ask to add to the text dictionary std::cout << " Add '" << input << "' to your personal dictionary? (y/n): "; char choice; std::cin >> choice; if (choice == 'y' || choice == 'Y') { - checker.Insert(input); // This updates Trie AND dictionary.txt + checker.Insert(input); std::cout << " [+] Saved to Personal Dictionary " << std::endl; } - // Clean the buffer for the next loop std::cin.ignore(std::numeric_limits::max(), '\n'); } } - // Final exit message std::cout << "\n[Exiting Lexis Engine... All changes saved. Goodbye!]" << std::endl; return 0; diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp index 0c3fead..6e72440 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp @@ -4,15 +4,17 @@ /* File : LexisSpellCheckDLL.cpp */ /* Author : Nitish Singh */ /* Created : 2026-05-25 */ -/* */ +/* */ /* Copyright (c) 2016-2026 Nitish Singh */ /* Licensed under the Apache License, Version 2.0 */ -/* See LICENSE file in project root for license information */ -/* */ +/* See LICENSE file in project root for license information */ +/* */ /* Module : Core/Interop */ /* Component : Spell Check Engine Boundary */ -/* Thread Safe : No (Requires external locking if shared across threads) */ -/* Complexity : Mutation/Search matches underlying engine complexities*/ +/* Thread Safe : No (Requires external locking if shared across */ +/* threads) */ +/* Complexity : Mutation/Search matches underlying engine */ +/* complexities */ /* API Status : Stable */ /* Exception Safety : Strong Guarantee (Catch-all standard guards) */ /*********************************************************************/ @@ -25,16 +27,18 @@ #include #include -//=================================================================== -// Constants: Security Bounds Gate -//=================================================================== +/*********************************************************************/ +/* Constants: Security Bounds Gate: 1 MB +/*********************************************************************/ + namespace { -constexpr size_t MAX_WORD_LEN = 1024; // Blocks malicious input string injections +constexpr size_t MAX_WORD_LEN = 1024; } -//=================================================================== -// Internal Helpers for Unmanaged String Lifecycles -//=================================================================== +/*********************************************************************/ +/* Internal Helpers for Unmanaged String Lifecycles +/*********************************************************************/ + static char* copyToMallocatedBuffer(const std::string& str) { char* output = static_cast(std::malloc(str.size() + 1)); if (!output) { @@ -44,9 +48,9 @@ static char* copyToMallocatedBuffer(const std::string& str) { return output; } -//=================================================================== -// Exported DLL Implementation (Extern "C") -//=================================================================== +/*********************************************************************/ +/* Exported DLL Implementation (Extern "C") +/*********************************************************************/ extern "C" { @@ -110,7 +114,6 @@ SPELL_API int checkWordABI(SpellCheckerHandle handle, const char* word, const ch auto instance = reinterpret_cast(handle); std::string search_word(word); - // Tier 1: Check primary Nuspell baseline dictionary mappings Lexis::SpellCheck::SpellResult result = instance->Check(search_word); if (result.isCorrect) { @@ -118,13 +121,11 @@ SPELL_API int checkWordABI(SpellCheckerHandle handle, const char* word, const ch return 1; } - // Tier 2: Check auxiliary runtime user overrides (Trie structure cache) if (instance->Contains(search_word)) { *outSuggestions = nullptr; return 1; } - // Tier 3: Word is verified misspelled. Serialize suggestion vectors to unmanaged layer. if (result.suggestions.empty()) { *outSuggestions = nullptr; } else { @@ -134,20 +135,20 @@ SPELL_API int checkWordABI(SpellCheckerHandle handle, const char* word, const ch for (size_t i = 0; i < max_items; ++i) { ss << result.suggestions[i]; if (i + 1 < max_items) { - ss << "|"; // Character delimiter maps cleanly to managed String.Split pipelines + ss << "|"; } } *outSuggestions = copyToMallocatedBuffer(ss.str()); if (!*outSuggestions) { - return -1; // Allocation fault context protection + return -1; } } - return 0; // Operational success: Return indicates token is ready for user substitution + return 0; } catch (...) { - return -1; // Catch-all guard handles thread termination or hardware anomalies safely + return -1; } } diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp index 4664a54..bc944cb 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp @@ -168,14 +168,12 @@ SpellResult SpellChecker::Check(const std::string& word) const { SpellResult result{false, {}}; - // Fast path: local Trie lookup if (Contains(word)) { result.isCorrect = true; return result; } - // Fallback: Nuspell dictionary if (m_dict) { result.isCorrect = m_dict->spell(word); diff --git a/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTestDll.cpp b/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTestDll.cpp index a7c165b..b3d6d6f 100644 --- a/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTestDll.cpp +++ b/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTestDll.cpp @@ -14,6 +14,12 @@ /* Description : Google Test suite validating exported DLL ABI */ /* behavior, lifecycle management, persistence, */ /* marshaling, and Nuspell integration. */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0 2026-04-17 Nitish Singh Initial implementation */ /*********************************************************************/ #include diff --git a/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTests.cpp b/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTests.cpp index bf1afbe..0884a12 100644 --- a/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTests.cpp +++ b/Backend/TextOps.Service/tests/Lexis.Core.Tests/SpellCheckerTests.cpp @@ -29,6 +29,12 @@ /* */ /* Notes : Cleans filesystem state 'dictionary.txt' during */ /* test setup to guarantee isolated executions. */ +/* */ +/* Revision History: */ +/* ----------------------------------------------------------------- */ +/* Version Date Author Description */ +/* ----------------------------------------------------------------- */ +/* 1.0 2026-04-11 Nitish Singh Initial implementation */ /*********************************************************************/ /*********************************************************************/ diff --git a/Docs/performance/ARCH_DEEP_DIVE.md b/Docs/performance/ARCH_DEEP_DIVE.md index ac493fc..b55ae48 100644 --- a/Docs/performance/ARCH_DEEP_DIVE.md +++ b/Docs/performance/ARCH_DEEP_DIVE.md @@ -203,12 +203,12 @@ Test summary: total: 46, failed: 0, succeeded: 46 ### Hardware Summary Table -| Component | Role in 300K Test | Technical Outcome | +| Component | Role in 300K Test | Technical Outcome | |------------------|--------------------------|------------------------------------------------------------------------------------| -| CPU (P-Cores) | Native C++ Logic | Best performance/thermal balance at 4 threads. | -| CPU (E-Cores) | Managed Runtime / IO | Fully utilized at 2.4GHz to shield P-cores from OS tax. | -| GPU | Passive | Power draw < 4mW; preserves thermal headroom for CPU logic. | -| Unified RAM | ABI Data Bridge | Stable RSS < 25MB; zero-leak performance across 300,000 calls. | +| CPU (P-Cores) | Native C++ Logic | Best performance/thermal balance at 4 threads. | +| CPU (E-Cores) | Managed Runtime / IO | Fully utilized at 2.4GHz to shield P-cores from OS tax. | +| GPU | Passive | Power draw < 4mW; preserves thermal headroom for CPU logic. | +| Unified RAM | ABI Data Bridge | Stable RSS < 25MB; zero-leak performance across 300,000 calls. | --- From a326c798049715b215f57e41d8ba1f40abd37e97 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:29:53 +0530 Subject: [PATCH 14/24] Added files --- .../src/Lexis.Core/src/Export.cpp | 36 ++-- .../src/Lexis.Core/src/LexisSpellCheckDLL.cpp | 183 +++++++++--------- .../src/Lexis.Core/src/SpellChecker.cpp | 177 +++++++---------- 3 files changed, 187 insertions(+), 209 deletions(-) diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp index d0a9f85..1b4ee4e 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/Export.cpp @@ -36,8 +36,8 @@ #include "SpellChecker.hpp" #include -#include #include +#include int main() { using namespace Lexis::SpellCheck; @@ -46,7 +46,9 @@ int main() { checker.LoadFromFile(); if (!checker.LoadDictionary("/usr/share/hunspell/en_US")) { - std::cout << "Warning: Could not load Nuspell dictionary. Suggestions disabled." << std::endl; + std::cout + << "Warning: Could not load Nuspell dictionary. Suggestions disabled." + << std::endl; } std::string input; @@ -55,20 +57,20 @@ int main() { std::cin >> input; if (input == "exit") { - break; + break; } SpellResult result = checker.Check(input); if (result.isCorrect) { - std::cout << " [✓] '" << input << "' is spelled correctly (Nuspell)." << std::endl; - } - else if (checker.Contains(input)) { - std::cout << " [✓] '" << input << "' found in your personal dictionary." << std::endl; - } - else { + std::cout << " [✓] '" << input << "' is spelled correctly (Nuspell)." + << std::endl; + } else if (checker.Contains(input)) { + std::cout << " [✓] '" << input << "' found in your personal dictionary." + << std::endl; + } else { std::cout << " [✗] '" << input << "' is misspelled!" << std::endl; - + if (!result.suggestions.empty()) { std::cout << " Suggestions: "; for (size_t i = 0; i < result.suggestions.size() && i < 5; ++i) { @@ -77,20 +79,22 @@ int main() { std::cout << std::endl; } - std::cout << " Add '" << input << "' to your personal dictionary? (y/n): "; + std::cout << " Add '" << input + << "' to your personal dictionary? (y/n): "; char choice; std::cin >> choice; - + if (choice == 'y' || choice == 'Y') { - checker.Insert(input); + checker.Insert(input); std::cout << " [+] Saved to Personal Dictionary " << std::endl; } - + std::cin.ignore(std::numeric_limits::max(), '\n'); } } - std::cout << "\n[Exiting Lexis Engine... All changes saved. Goodbye!]" << std::endl; - + std::cout << "\n[Exiting Lexis Engine... All changes saved. Goodbye!]" + << std::endl; + return 0; } \ No newline at end of file diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp index 6e72440..e7ae5ed 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/LexisSpellCheckDLL.cpp @@ -21,31 +21,31 @@ #include "LexisSpellCheckDLL.hpp" #include "SpellChecker.hpp" +#include #include #include -#include #include -#include +#include /*********************************************************************/ /* Constants: Security Bounds Gate: 1 MB /*********************************************************************/ namespace { -constexpr size_t MAX_WORD_LEN = 1024; +constexpr size_t MAX_WORD_LEN = 1024; } /*********************************************************************/ /* Internal Helpers for Unmanaged String Lifecycles /*********************************************************************/ -static char* copyToMallocatedBuffer(const std::string& str) { - char* output = static_cast(std::malloc(str.size() + 1)); - if (!output) { - return nullptr; - } - std::memcpy(output, str.c_str(), str.size() + 1); - return output; +static char *copyToMallocatedBuffer(const std::string &str) { + char *output = static_cast(std::malloc(str.size() + 1)); + if (!output) { + return nullptr; + } + std::memcpy(output, str.c_str(), str.size() + 1); + return output; } /*********************************************************************/ @@ -55,107 +55,114 @@ static char* copyToMallocatedBuffer(const std::string& str) { extern "C" { SPELL_API SpellCheckerHandle createSpellChecker() { - try { - auto instance = new Lexis::SpellCheck::SpellChecker(); - return reinterpret_cast(instance); - } catch (...) { - return nullptr; - } + try { + auto instance = new Lexis::SpellCheck::SpellChecker(); + return reinterpret_cast(instance); + } catch (...) { + return nullptr; + } } SPELL_API void freeSpellChecker(SpellCheckerHandle handle) { - if (handle) { - auto instance = reinterpret_cast(handle); - delete instance; - } + if (handle) { + auto instance = reinterpret_cast(handle); + delete instance; + } } -SPELL_API int loadMainDictionary(SpellCheckerHandle handle, const char* path) { - if (!handle || !path) { - return 0; - } - try { - auto instance = reinterpret_cast(handle); - return instance->LoadDictionary(path) ? 1 : 0; - } catch (...) { - return 0; - } +SPELL_API int loadMainDictionary(SpellCheckerHandle handle, const char *path) { + if (!handle || !path) { + return 0; + } + try { + auto instance = reinterpret_cast(handle); + return instance->LoadDictionary(path) ? 1 : 0; + } catch (...) { + return 0; + } } SPELL_API void loadPersonalDictionary(SpellCheckerHandle handle) { - if (!handle) return; - try { - auto instance = reinterpret_cast(handle); - instance->LoadFromFile(); - } catch (...) {} + if (!handle) + return; + try { + auto instance = reinterpret_cast(handle); + instance->LoadFromFile(); + } catch (...) { + } } -SPELL_API void insertPersonalWord(SpellCheckerHandle handle, const char* word) { - if (!handle || !word) return; - if (std::strlen(word) > MAX_WORD_LEN) return; - - try { - auto instance = reinterpret_cast(handle); - instance->Insert(std::string(word)); - } catch (...) {} +SPELL_API void insertPersonalWord(SpellCheckerHandle handle, const char *word) { + if (!handle || !word) + return; + if (std::strlen(word) > MAX_WORD_LEN) + return; + + try { + auto instance = reinterpret_cast(handle); + instance->Insert(std::string(word)); + } catch (...) { + } } -SPELL_API int checkWordABI(SpellCheckerHandle handle, const char* word, const char** outSuggestions) { - if (!handle || !word || !outSuggestions) { - return -1; - } +SPELL_API int checkWordABI(SpellCheckerHandle handle, const char *word, + const char **outSuggestions) { + if (!handle || !word || !outSuggestions) { + return -1; + } - size_t word_len = std::strlen(word); - if (word_len == 0 || word_len > MAX_WORD_LEN) { - return -1; - } + size_t word_len = std::strlen(word); + if (word_len == 0 || word_len > MAX_WORD_LEN) { + return -1; + } - try { - auto instance = reinterpret_cast(handle); - std::string search_word(word); + try { + auto instance = reinterpret_cast(handle); + std::string search_word(word); - Lexis::SpellCheck::SpellResult result = instance->Check(search_word); + Lexis::SpellCheck::SpellResult result = instance->Check(search_word); - if (result.isCorrect) { - *outSuggestions = nullptr; - return 1; - } + if (result.isCorrect) { + *outSuggestions = nullptr; + return 1; + } - if (instance->Contains(search_word)) { - *outSuggestions = nullptr; - return 1; - } + if (instance->Contains(search_word)) { + *outSuggestions = nullptr; + return 1; + } - if (result.suggestions.empty()) { - *outSuggestions = nullptr; - } else { - std::stringstream ss; - size_t max_items = std::min(result.suggestions.size(), static_cast(5)); - - for (size_t i = 0; i < max_items; ++i) { - ss << result.suggestions[i]; - if (i + 1 < max_items) { - ss << "|"; - } - } - - *outSuggestions = copyToMallocatedBuffer(ss.str()); - if (!*outSuggestions) { - return -1; - } + if (result.suggestions.empty()) { + *outSuggestions = nullptr; + } else { + std::stringstream ss; + size_t max_items = + std::min(result.suggestions.size(), static_cast(5)); + + for (size_t i = 0; i < max_items; ++i) { + ss << result.suggestions[i]; + if (i + 1 < max_items) { + ss << "|"; } + } - return 0; - - } catch (...) { - return -1; + *outSuggestions = copyToMallocatedBuffer(ss.str()); + if (!*outSuggestions) { + return -1; + } } + + return 0; + + } catch (...) { + return -1; + } } -SPELL_API void freeSuggestionsBuffer(char* str) { - if (str) { - std::free(str); - } +SPELL_API void freeSuggestionsBuffer(char *str) { + if (str) { + std::free(str); + } } } // extern "C" \ No newline at end of file diff --git a/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp b/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp index bc944cb..f9f659f 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp +++ b/Backend/TextOps.Service/src/Lexis.Core/src/SpellChecker.cpp @@ -38,153 +38,120 @@ /*********************************************************************/ #include "SpellChecker.hpp" -#include #include #include +#include namespace Lexis::SpellCheck { -SpellChecker::SpellChecker() - : root(std::make_shared()) - , m_dict(nullptr) -{ -} +SpellChecker::SpellChecker() + : root(std::make_shared()), m_dict(nullptr) {} -void SpellChecker::Insert(const std::string& word) -{ - std::string normalized = word; +void SpellChecker::Insert(const std::string &word) { + std::string normalized = word; - std::transform( - normalized.begin(), - normalized.end(), - normalized.begin(), - ::tolower); - - auto curr = root; + std::transform(normalized.begin(), normalized.end(), normalized.begin(), + ::tolower); - for (char ch : normalized) - { - if (curr->children.find(ch) == curr->children.end()) - { - curr->children[ch] = std::make_shared(); - } + auto curr = root; - curr = curr->children[ch]; + for (char ch : normalized) { + if (curr->children.find(ch) == curr->children.end()) { + curr->children[ch] = std::make_shared(); } - if (!curr->isEndOfWord) - { - curr->isEndOfWord = true; + curr = curr->children[ch]; + } - std::ofstream outfile(DICTIONARY_PATH, std::ios_base::app); + if (!curr->isEndOfWord) { + curr->isEndOfWord = true; - if (outfile.is_open()) - { - outfile << normalized << '\n'; - } + std::ofstream outfile(DICTIONARY_PATH, std::ios_base::app); + + if (outfile.is_open()) { + outfile << normalized << '\n'; } + } } -bool SpellChecker::Contains(const std::string& word) const -{ - if (word.empty()) - { - return false; - } +bool SpellChecker::Contains(const std::string &word) const { + if (word.empty()) { + return false; + } - std::string normalized = word; + std::string normalized = word; - std::transform( - normalized.begin(), - normalized.end(), - normalized.begin(), - ::tolower); + std::transform(normalized.begin(), normalized.end(), normalized.begin(), + ::tolower); - auto curr = root; + auto curr = root; - for (char ch : normalized) - { - if (curr->children.find(ch) == curr->children.end()) - { - return false; - } - - curr = curr->children[ch]; + for (char ch : normalized) { + if (curr->children.find(ch) == curr->children.end()) { + return false; } - return curr->isEndOfWord; -} + curr = curr->children[ch]; + } -void SpellChecker::LoadFromFile() -{ - std::ifstream infile(DICTIONARY_PATH); + return curr->isEndOfWord; +} - std::string word; +void SpellChecker::LoadFromFile() { + std::ifstream infile(DICTIONARY_PATH); - while (infile >> word) - { - auto curr = root; + std::string word; - for (char ch : word) - { - if (curr->children.find(ch) == curr->children.end()) - { - curr->children[ch] = std::make_shared(); - } + while (infile >> word) { + auto curr = root; - curr = curr->children[ch]; - } + for (char ch : word) { + if (curr->children.find(ch) == curr->children.end()) { + curr->children[ch] = std::make_shared(); + } - curr->isEndOfWord = true; + curr = curr->children[ch]; } + + curr->isEndOfWord = true; + } } -void SpellChecker::LoadSampleDictionary() -{ - for (const auto& word : {"apple", "native"}) - { - Insert(word); - } +void SpellChecker::LoadSampleDictionary() { + for (const auto &word : {"apple", "native"}) { + Insert(word); + } } -bool SpellChecker::LoadDictionary(const std::string& path) -{ - try - { - auto dictObj = nuspell::Dictionary::load_from_path(path); +bool SpellChecker::LoadDictionary(const std::string &path) { + try { + auto dictObj = nuspell::Dictionary::load_from_path(path); - m_dict = - std::make_unique(std::move(dictObj)); + m_dict = std::make_unique(std::move(dictObj)); - return m_dict != nullptr; - } - catch (...) - { - return false; - } + return m_dict != nullptr; + } catch (...) { + return false; + } } -SpellResult SpellChecker::Check(const std::string& word) const -{ - SpellResult result{false, {}}; +SpellResult SpellChecker::Check(const std::string &word) const { + SpellResult result{false, {}}; - if (Contains(word)) - { - result.isCorrect = true; - return result; - } + if (Contains(word)) { + result.isCorrect = true; + return result; + } - if (m_dict) - { - result.isCorrect = m_dict->spell(word); + if (m_dict) { + result.isCorrect = m_dict->spell(word); - if (!result.isCorrect) - { - m_dict->suggest(word, result.suggestions); - } + if (!result.isCorrect) { + m_dict->suggest(word, result.suggestions); } + } - return result; + return result; } } // namespace Lexis::SpellCheck \ No newline at end of file From 6e521753cfca9889278a5d2ecd8eaf491b6f1951 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:33:41 +0530 Subject: [PATCH 15/24] style: apply clang-format fixes to resolve CI error --- .../CppLib/src/CapitalizeWordsConversion.cpp | 3 +-- Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp | 4 +--- Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp | 2 +- Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp | 4 ++-- 4 files changed, 5 insertions(+), 8 deletions(-) diff --git a/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp index 85c0bcf..d593702 100644 --- a/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/CapitalizeWordsConversion.cpp @@ -55,8 +55,7 @@ CapitalizeWordsConversion::convert(const std::string &input) const { result += " "; } - word = ConversionResult(lowerConv.convert(word)) - .get_c_str(); + word = ConversionResult(lowerConv.convert(word)).get_c_str(); std::string firstChar(1, word[0]); firstChar = ConversionResult(upperConv.convert(firstChar)).get_c_str(); diff --git a/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp b/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp index d2db3db..a683dd4 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ConversionResult.cpp @@ -58,9 +58,7 @@ ConversionResult::ConversionResult(const char *input) { /* Destructor */ /*********************************************************************/ -ConversionResult::~ConversionResult() { - delete[] data; -} +ConversionResult::~ConversionResult() { delete[] data; } /*********************************************************************/ /* Copy Constructor */ diff --git a/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp b/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp index 23b0968..998946a 100644 --- a/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/LowerCaseConversion.cpp @@ -41,7 +41,7 @@ ConversionResult LowerCaseConversion::convert(const std::string &input) const { for (char &c : result) { if (c >= 'A' && c <= 'Z') { - c = c + ('a' - 'A'); + c = c + ('a' - 'A'); } } diff --git a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp index 05fc56f..b283f41 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp @@ -67,7 +67,7 @@ #include /*********************************************************************/ -/* Constants: 5 MB Buffer Limit: Hardcoded +/* Constants: 5 MB Buffer Limit: Hardcoded /*********************************************************************/ namespace { @@ -83,7 +83,7 @@ static char *allocateCString(const std::string &str) { if (!output) { return nullptr; } - + std::memcpy(output, str.c_str(), str.size() + 1); return output; } From 3c9b7a302dcea1d8d437ed29faadfeb9f4f8f25d Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:37:37 +0530 Subject: [PATCH 16/24] style: replace nested block comments with single-line comments for clang-tidy compliance --- Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp index b283f41..b9b764d 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp @@ -66,9 +66,9 @@ #include #include -/*********************************************************************/ -/* Constants: 5 MB Buffer Limit: Hardcoded -/*********************************************************************/ +// ******************************************************************* +// Constants: 5 MB Buffer Limit: Hardcoded +// ******************************************************************* namespace { constexpr size_t MAX_INPUT_SIZE = 5 * 1024 * 1024; From a846e8cf4f09d35c98a2e257b71cebce61393f42 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:45:33 +0530 Subject: [PATCH 17/24] fix: sanitize comment dividers for clang-tidy compliance --- .../CppLib/src/ProcessStringDLL.cpp | 20 +++++++++---------- 1 file changed, 10 insertions(+), 10 deletions(-) diff --git a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp index b9b764d..fbdc257 100644 --- a/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp +++ b/Backend/CaseConversionAPI/CppLib/src/ProcessStringDLL.cpp @@ -1,6 +1,6 @@ // SPDX-License-Identifier: Apache-2.0 -/*********************************************************************/ +// *********************************************************************/ /* File : ProcessStringDLL.cpp */ /* Author : Nitish Singh */ /* Created : 2026-04-11 */ @@ -50,11 +50,11 @@ /* 1.3 2026-04-18 Nitish Singh Applied clang-format */ /* 1.4 2026-04-18 Nitish Singh Added traceId support */ /* 1.5 2026-04-28 Nitish Singh Hardened memory safety */ -/*********************************************************************/ +// *********************************************************************/ -/*********************************************************************/ +// *********************************************************************/ /* Dependencies */ -/*********************************************************************/ +// *********************************************************************/ #include "ProcessStringDLL.hpp" #include "Client.hpp" @@ -74,9 +74,9 @@ namespace { constexpr size_t MAX_INPUT_SIZE = 5 * 1024 * 1024; } -/*********************************************************************/ +// *********************************************************************/ /* Helper Utilities (internal, not exported - C++ only) -/*********************************************************************/ +// *********************************************************************/ static char *allocateCString(const std::string &str) { char *output = static_cast(std::malloc(str.size() + 1)); @@ -93,9 +93,9 @@ static const char *safeError(const char *msg) { return err ? err : "FATAL_ALLOCATION_FAILURE"; } -/*********************************************************************/ +// *********************************************************************/ /* Conversion Mapping (Internal - C++ only) -/*********************************************************************/ +// *********************************************************************/ static bool mapConversionType(ConversionChoice choice, ConversionType &type) noexcept { @@ -144,9 +144,9 @@ static bool mapConversionType(ConversionChoice choice, } } -/*********************************************************************/ +// *********************************************************************/ /* Exported DLL API (Extern "C" for C# interop) -/*********************************************************************/ +// *********************************************************************/ extern "C" { From 69da23ae5095c59fe958f508536ef20bd1566108 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 15:54:03 +0530 Subject: [PATCH 18/24] hardcoded path to make it work on any runner --- .github/workflows/telemetry-e2e-verification.yml | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/.github/workflows/telemetry-e2e-verification.yml b/.github/workflows/telemetry-e2e-verification.yml index bcabbaf..f5a3d5f 100644 --- a/.github/workflows/telemetry-e2e-verification.yml +++ b/.github/workflows/telemetry-e2e-verification.yml @@ -93,9 +93,9 @@ jobs: cd Backend/CaseConversionAPI/DotNetAPI dotnet build -c Release - # Synchronize Native Binary with API Runtime - cp ../CppLib/build/libProcessStringDLL.so . - cp ../CppLib/build/libProcessStringDLL.so ./bin/Release/net8.0/ + LIB_PATH=$(find ../CppLib/build -name "libProcessStringDLL.so" | head -n 1) + cp "$LIB_PATH" . + cp "$LIB_PATH" ./bin/Release/net8.0/ # Background Execution for Trace Capture dotnet ./bin/Release/net8.0/DotNetAPI.dll > api.log 2>&1 & From 2ee5995e1547a174715fbd587d4583735cc12c16 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 16:14:03 +0530 Subject: [PATCH 19/24] hardcoded path to make it work on any runner --- .github/workflows/telemetry-e2e-verification.yml | 13 ++++++++++++- 1 file changed, 12 insertions(+), 1 deletion(-) diff --git a/.github/workflows/telemetry-e2e-verification.yml b/.github/workflows/telemetry-e2e-verification.yml index f5a3d5f..8a3a7fe 100644 --- a/.github/workflows/telemetry-e2e-verification.yml +++ b/.github/workflows/telemetry-e2e-verification.yml @@ -93,7 +93,18 @@ jobs: cd Backend/CaseConversionAPI/DotNetAPI dotnet build -c Release - LIB_PATH=$(find ../CppLib/build -name "libProcessStringDLL.so" | head -n 1) + echo "=== Build Directory Contents ===" + find ../CppLib/build -type f + + LIB_PATH=$(find ../CppLib/build -type f -name "*.so" | head -n 1) + + echo "LIB_PATH=$LIB_PATH" + + if [ -z "$LIB_PATH" ]; then + echo "ERROR: No shared library found" + exit 1 + fi + cp "$LIB_PATH" . cp "$LIB_PATH" ./bin/Release/net8.0/ From 44b23bf17e55db1dbc4f2fc3464123670f00bb4b Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 16:23:35 +0530 Subject: [PATCH 20/24] hardcoded path to make it work on any runner --- .github/workflows/telemetry-e2e-verification.yml | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/.github/workflows/telemetry-e2e-verification.yml b/.github/workflows/telemetry-e2e-verification.yml index 8a3a7fe..0d9e06f 100644 --- a/.github/workflows/telemetry-e2e-verification.yml +++ b/.github/workflows/telemetry-e2e-verification.yml @@ -96,6 +96,11 @@ jobs: echo "=== Build Directory Contents ===" find ../CppLib/build -type f + - name: Debug Native Build + run: | + echo "=== Native Artifacts ===" + find Backend/CaseConversionAPI/CppLib/build -type f | sort + LIB_PATH=$(find ../CppLib/build -type f -name "*.so" | head -n 1) echo "LIB_PATH=$LIB_PATH" From c0441e54f0c28d2d774054fe5695423534815527 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 16:30:40 +0530 Subject: [PATCH 21/24] hardcoded path to make it work on any runner --- .../workflows/telemetry-e2e-verification.yml | 27 ++++++------------- 1 file changed, 8 insertions(+), 19 deletions(-) diff --git a/.github/workflows/telemetry-e2e-verification.yml b/.github/workflows/telemetry-e2e-verification.yml index 0d9e06f..59c9b03 100644 --- a/.github/workflows/telemetry-e2e-verification.yml +++ b/.github/workflows/telemetry-e2e-verification.yml @@ -83,23 +83,20 @@ jobs: # Managed Layer & Sidecar Orchestration # ------------------------------------------------------------ + - name: Debug Native Build + run: | + echo "=== Native Artifacts ===" + find Backend/CaseConversionAPI/CppLib/build -type f | sort + - name: Bootstrap .NET API env: OTEL_EXPORTER_OTLP_ENDPOINT: http://localhost:4317 - ASPNETCORE_URLS: http://localhost:5050 + ASPNETCORE_URLS: http://localhost:5050 ASPNETCORE_ENVIRONMENT: Development LD_LIBRARY_PATH: .:${{ github.workspace }}/Backend/CaseConversionAPI/CppLib/build run: | cd Backend/CaseConversionAPI/DotNetAPI dotnet build -c Release - - echo "=== Build Directory Contents ===" - find ../CppLib/build -type f - - - name: Debug Native Build - run: | - echo "=== Native Artifacts ===" - find Backend/CaseConversionAPI/CppLib/build -type f | sort LIB_PATH=$(find ../CppLib/build -type f -name "*.so" | head -n 1) @@ -112,16 +109,8 @@ jobs: cp "$LIB_PATH" . cp "$LIB_PATH" ./bin/Release/net8.0/ - - # Background Execution for Trace Capture - dotnet ./bin/Release/net8.0/DotNetAPI.dll > api.log 2>&1 & - - echo "Waiting for API Readiness at :5050..." - timeout 60s bash -c 'until curl -sf http://localhost:5050/api/WordCase/convert \ - -X POST -H "Content-Type: application/json" \ - -d "{\"text\":\"CI-PROBE\", \"choice\":1}"; do - sleep 2; - done' || (echo "FATAL: API Startup Timeout" && cat api.log && exit 1) + + dotnet ./bin/Release/net8.0/DotNetAPI.dll > api.log 2>&1 & # ------------------------------------------------------------ # Traffic Injection & Span Generation From d0bbdca1b6ae5055ef505a0c22da829ba1bfc217 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Tue, 23 Jun 2026 16:43:25 +0530 Subject: [PATCH 22/24] hardcoded path to make it work on any runner --- .../CaseConversionAPI/CppLib/CMakeLists.txt | 35 +++++++++++-------- .../src/Lexis.Core/CMakeLists.txt | 2 ++ 2 files changed, 23 insertions(+), 14 deletions(-) diff --git a/Backend/CaseConversionAPI/CppLib/CMakeLists.txt b/Backend/CaseConversionAPI/CppLib/CMakeLists.txt index 2f24f35..a389673 100644 --- a/Backend/CaseConversionAPI/CppLib/CMakeLists.txt +++ b/Backend/CaseConversionAPI/CppLib/CMakeLists.txt @@ -29,14 +29,18 @@ set(CMAKE_CXX_STANDARD 17) set(CMAKE_CXX_STANDARD_REQUIRED ON) enable_testing() -# --------------------------- +# ----------------------------------------------------------------------------- # Include directories -# --------------------------- +# ----------------------------------------------------------------------------- + include_directories(include) -# --------------------------- +# ----------------------------------------------------------------------------- # Library: StringConversionLib -# --------------------------- +# ----------------------------------------------------------------------------- + +set(BUILD_SHARED_LIBS ON) + add_library(StringConversionLib src/AlternatingCaseConversion.cpp src/CapitalizeWordsConversion.cpp @@ -59,15 +63,16 @@ add_library(StringConversionLib target_include_directories(StringConversionLib PUBLIC include) -# --------------------------- +# ----------------------------------------------------------------------------- # Main Application -# --------------------------- +# ----------------------------------------------------------------------------- + add_executable(app src/sourcecode.cpp) target_link_libraries(app StringConversionLib) -# --------------------------- +# ----------------------------------------------------------------------------- # GoogleTest Setup -# --------------------------- +# ----------------------------------------------------------------------------- include(FetchContent) # Force GoogleTest to use the same runtime on Windows @@ -82,9 +87,9 @@ FetchContent_Declare( # Make GoogleTest available FetchContent_MakeAvailable(googletest) -# --------------------------- +# ----------------------------------------------------------------------------- # Test Executable -# --------------------------- +# ----------------------------------------------------------------------------- add_executable(runTests ${PROJECT_SOURCE_DIR}/../Tests/CppTests/StringConversionTests.cpp ${PROJECT_SOURCE_DIR}/../Tests/CppTests/AdvancedStringConversionTests.cpp @@ -93,14 +98,16 @@ add_executable(runTests # Link the library and GoogleTest target_link_libraries(runTests StringConversionLib gtest gtest_main) -# --------------------------- +# ----------------------------------------------------------------------------- # Register Tests with CTest -# --------------------------- +# ----------------------------------------------------------------------------- + add_test(NAME AllTests COMMAND runTests) -# =================================================================== +# ----------------------------------------------------------------------------- # 6. Code Formatting (Clang-Format Automation) -# =================================================================== +# ----------------------------------------------------------------------------- + find_program(CLANG_FORMAT_EXE NAMES clang-format HINTS /opt/homebrew/bin /usr/local/bin diff --git a/Backend/TextOps.Service/src/Lexis.Core/CMakeLists.txt b/Backend/TextOps.Service/src/Lexis.Core/CMakeLists.txt index 31ecd39..714b112 100644 --- a/Backend/TextOps.Service/src/Lexis.Core/CMakeLists.txt +++ b/Backend/TextOps.Service/src/Lexis.Core/CMakeLists.txt @@ -21,6 +21,7 @@ find_library(NUSPELL_LIB NAMES nuspell PATHS "/opt/homebrew/lib") # --------------------------------------------------------- # 3. LIBRARY: LexisCore (Business Logic Only) # --------------------------------------------------------- + add_library(LexisCore SHARED src/SpellChecker.cpp src/LexisSpellCheckDLL.cpp @@ -48,6 +49,7 @@ file(MAKE_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}/vocabulary") # --------------------------------------------------------- # 4. MAIN APPLICATION: LexisApp (The CLI Tool) # --------------------------------------------------------- + add_executable(LexisApp src/Export.cpp) # Direct dyld to look for dependent dylibs inside the same directory as the binary From ab55580fa34dc306b4a21fe53ee0761a881d86c2 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Sat, 4 Jul 2026 16:15:57 +0530 Subject: [PATCH 23/24] Connection refused troubleshooting --- .../workflows/telemetry-e2e-verification.yml | 30 ++++++++++++------- 1 file changed, 19 insertions(+), 11 deletions(-) diff --git a/.github/workflows/telemetry-e2e-verification.yml b/.github/workflows/telemetry-e2e-verification.yml index 59c9b03..c76e4d0 100644 --- a/.github/workflows/telemetry-e2e-verification.yml +++ b/.github/workflows/telemetry-e2e-verification.yml @@ -83,12 +83,12 @@ jobs: # Managed Layer & Sidecar Orchestration # ------------------------------------------------------------ - - name: Debug Native Build + - name: Build and Start .NET API run: | echo "=== Native Artifacts ===" find Backend/CaseConversionAPI/CppLib/build -type f | sort - - name: Bootstrap .NET API + - name: Start API env: OTEL_EXPORTER_OTLP_ENDPOINT: http://localhost:4317 ASPNETCORE_URLS: http://localhost:5050 @@ -96,21 +96,29 @@ jobs: LD_LIBRARY_PATH: .:${{ github.workspace }}/Backend/CaseConversionAPI/CppLib/build run: | cd Backend/CaseConversionAPI/DotNetAPI + dotnet build -c Release - LIB_PATH=$(find ../CppLib/build -type f -name "*.so" | head -n 1) + LIB_PATH=$(find ../CppLib/build -name "*.so" | head -n1) - echo "LIB_PATH=$LIB_PATH" + cp "$LIB_PATH" ./bin/Release/net8.0/ - if [ -z "$LIB_PATH" ]; then - echo "ERROR: No shared library found" - exit 1 - fi + nohup dotnet ./bin/Release/net8.0/DotNetAPI.dll > api.log 2>&1 & - cp "$LIB_PATH" . - cp "$LIB_PATH" ./bin/Release/net8.0/ + echo "Waiting for API..." - dotnet ./bin/Release/net8.0/DotNetAPI.dll > api.log 2>&1 & + for i in {1..30}; do + if curl -s http://localhost:5050/ >/dev/null; then + echo "API started." + exit 0 + fi + + sleep 2 + done + + echo "API failed to start" + cat api.log + exit 1 # ------------------------------------------------------------ # Traffic Injection & Span Generation From f4b3c44a5323857b162de097b8af899933015f15 Mon Sep 17 00:00:00 2001 From: Nitish Singh <93253740+nitishhsinghhh@users.noreply.github.com> Date: Sun, 23 Aug 2026 22:43:06 +0530 Subject: [PATCH 24/24] Rust specifc changes --- .github/workflows/dotnet-tests.yml | 26 +- .../CppLib/Scripts/run-local-context.sh | 2 +- .../Controllers/WordCaseController.cs | 281 +++++++++++++----- .../DotNetAPI/DotNetAPI.csproj | 74 ++++- .../AdvancedStringConversionTests.cpp | 37 +++ .../Tests/CppTests/StringConversionTests.cpp | 3 + .../Tests/DotNetTests/DotNetAPI.Tests.csproj | 47 +-- README.md | 2 +- 8 files changed, 354 insertions(+), 118 deletions(-) diff --git a/.github/workflows/dotnet-tests.yml b/.github/workflows/dotnet-tests.yml index cbf9876..ff585d0 100644 --- a/.github/workflows/dotnet-tests.yml +++ b/.github/workflows/dotnet-tests.yml @@ -38,7 +38,7 @@ on: paths: &shared_paths - 'Backend/CaseConversionAPI/CppLib/**' - 'Backend/CaseConversionAPI/DotNetAPI/**' - - 'Backend/CaseConversionAPI/Tests/DotNetTests/**' # <-- FIXED: tests to Tests + - 'Backend/CaseConversionAPI/Tests/DotNetTests/**' - '.github/workflows/dotnet-tests.yml' pull_request: branches: ["main"] @@ -66,9 +66,9 @@ jobs: - name: Checkout code uses: actions/checkout@v4 - # ------------------------------------------------------------ + # ------------------------------------------------------------------ # Resource Initialization & Structured Logging - # ------------------------------------------------------------ + # ------------------------------------------------------------------ - name: Initialize Workflow Logs shell: bash @@ -89,9 +89,9 @@ jobs: with: dotnet-version: "8.0.x" - # ------------------------------------------------------------ + # ------------------------------------------------------------------ # Native Layer Build (C++17) - # ------------------------------------------------------------ + # ------------------------------------------------------------------ - name: Build C++ Library (Unix) if: runner.os != 'Windows' @@ -111,12 +111,12 @@ jobs: -G "Visual Studio 17 2022" -A x64 cmake --build build --config Release --parallel - # ------------------------------------------------------------ + # ------------------------------------------------------------------ # Managed Layer Build & ABI Bridge Preparation - # ------------------------------------------------------------ + # ------------------------------------------------------------------ - name: Build .NET Tests - working-directory: Backend/CaseConversionAPI/Tests/DotNetTests # <-- FIXED: tests to Tests + working-directory: Backend/CaseConversionAPI/Tests/DotNetTests run: | dotnet restore dotnet build --configuration Release @@ -124,7 +124,7 @@ jobs: - name: Inject Native Library (Artifact Injection) shell: bash run: | - DEST_PATH="Backend/CaseConversionAPI/Tests/DotNetTests/bin/Release/net8.0/" # <-- FIXED: tests to Tests + DEST_PATH="Backend/CaseConversionAPI/Tests/DotNetTests/bin/Release/net8.0/" mkdir -p "$DEST_PATH" if [ "${{ runner.os }}" == "Windows" ]; then @@ -139,16 +139,16 @@ jobs: fi cp "$LIB_FILE" "$DEST_PATH$TARGET_NAME" - cp "$LIB_FILE" "Backend/CaseConversionAPI/Tests/DotNetTests/$TARGET_NAME" # <-- FIXED: tests to Tests + cp "$LIB_FILE" "Backend/CaseConversionAPI/Tests/DotNetTests/$TARGET_NAME" echo "{\"event\": \"BRIDGE_READY\", \"lib\": \"$TARGET_NAME\", \"os\": \"${{ matrix.os }}\"}" - # ------------------------------------------------------------ + # ------------------------------------------------------------------ # Test Execution (With Telemetry Context) - # ------------------------------------------------------------ + # -------------------------------------------------------------------- - name: Run Integration Tests - working-directory: Backend/CaseConversionAPI/Tests/DotNetTests # <-- FIXED: tests to Tests + working-directory: Backend/CaseConversionAPI/Tests/DotNetTests shell: bash env: OTEL_EXPORTER_OTLP_ENDPOINT: ${{ runner.os == 'Linux' && 'http://localhost:4317' || 'http://localhost:9999' }} diff --git a/Backend/CaseConversionAPI/CppLib/Scripts/run-local-context.sh b/Backend/CaseConversionAPI/CppLib/Scripts/run-local-context.sh index 6925361..8e170cc 100755 --- a/Backend/CaseConversionAPI/CppLib/Scripts/run-local-context.sh +++ b/Backend/CaseConversionAPI/CppLib/Scripts/run-local-context.sh @@ -18,7 +18,7 @@ # FEATURES : */ # * Dynamic workspace synchronization */ # * Safe CMakeLists backup and restore workflow */ -# * Apple Silicon (M-Series) optimization */ +# * Apple Silicon (M-Series) optimization */ # * Automated clang-format integration */ # * Parallelized multi-core compilation */ # * Execution context validation */ diff --git a/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs b/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs index 740ded0..6f4a93b 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs +++ b/Backend/CaseConversionAPI/DotNetAPI/Controllers/WordCaseController.cs @@ -14,8 +14,8 @@ * See the License for the specific language governing permissions and * limitations under the License. * - * Description : REST API controllers exposing authentication and high-performance string - * case conversion operations. Integrates unmanaged execution architectures + * Description : REST API controllers exposing authentication and high-performance string + * case conversion operations. Integrates unmanaged execution architectures * with managed .NET infrastructure components. * * Author : Nitish Singh @@ -27,22 +27,25 @@ * 1.0 2026-04-11 Nitish Singh Initial implementation of web API controllers. * 1.1 2026-04-19 Nitish Singh Engineered parallel batch endpoint utilizing async * orchestration designed for Apple M2 core topologies. - * 1.2 2026-04-20 Nitish Singh Consolidated routing structures, resolved compilation - * failures CS0111 and CS0117, and pruned dead execution + * 1.2 2026-04-20 Nitish Singh Consolidated routing structures, resolved compilation + * failures CS0111 and CS0117, and pruned dead execution * branches. + * 1.3 2026-08-23 Nitish Singh Unified native-engine resolution for C++ and Rust + * implementations, added public engine aliases, + * standardized validation, and hardened controller + * dependency handling. **************************************************************************************************/ using System; using System.Collections.Generic; using System.Diagnostics; +using System.Linq; using System.Threading.Tasks; using Microsoft.AspNetCore.Authorization; using Microsoft.AspNetCore.Http; using Microsoft.AspNetCore.Mvc; using StringConversionAPI.Models; using StringConversionAPI.Services; -using StringConversionAPI.Services.Rust; -using StringConversionAPI.Services.Native; namespace StringConversionAPI.Controllers { @@ -64,10 +67,14 @@ public sealed class BatchRequest public IEnumerable Texts { get; set; } = new List(); /// - /// Gets or sets the transformation routine routine index matching unmanaged engine structures. + /// Gets or sets the transformation routine index matching unmanaged engine structures. /// public int Choice { get; set; } + /// + /// Gets or sets the optional native engine identifier. + /// Supported values are cpp and rust. + /// public string? EngineType { get; set; } } @@ -87,32 +94,44 @@ public sealed class AuthController : ControllerBase /// The identity token handling service instance. public AuthController(ITokenService tokenService) { - _tokenService = tokenService ?? throw new ArgumentNullException(nameof(tokenService)); + _tokenService = tokenService + ?? throw new ArgumentNullException(nameof(tokenService)); } /// /// Validates authorization metadata and generates an identity context bearer string. /// /// The target identity request payload. - /// An containing a validated token block or unauthorized markers. + /// An action result containing a validated token block or unauthorized markers. [HttpPost("login")] [ProducesResponseType(StatusCodes.Status200OK)] + [ProducesResponseType(StatusCodes.Status400BadRequest)] [ProducesResponseType(StatusCodes.Status401Unauthorized)] public IActionResult Login([FromBody] LoginRequest request) { if (request == null) { - return BadRequest(new { Message = "The login payload structure cannot be parsed as a valid model." }); + return BadRequest(new + { + Message = "The login payload structure cannot be parsed as a valid model." + }); } - // Standard credential screening setup for base-line operational testing - if (request.Username == "admin" && request.Password == "password") + // Standard credential screening setup for baseline operational testing. + if (request.Username == "admin" && + request.Password == "password") { - string token = _tokenService.GenerateToken(request.Username, new[] { "Admin", "User" }); + string token = _tokenService.GenerateToken( + request.Username, + new[] { "Admin", "User" }); + return Ok(new { Token = token }); } - return Unauthorized(new { Message = "Invalid authentication credentials supplied." }); + return Unauthorized(new + { + Message = "Invalid authentication credentials supplied." + }); } } @@ -130,19 +149,62 @@ public sealed class WordCaseController : ControllerBase /// /// Initializes a new instance of the class. /// - /// Consolidate into a single constructor that resolves the strategy dynamically. - /// Service name. - + /// + /// All registered native string processing engines. + /// public WordCaseController(IEnumerable engines) { - _engines = engines; + _engines = engines + ?? throw new ArgumentNullException(nameof(engines)); } /// - /// Transforms a single input sequence through synchronous unmanaged compilation frames. + /// Resolves the requested native engine. + /// + /// Public identifiers: + /// cpp -> CppEngine + /// rust -> RustEngine + /// + /// Registered implementation names are also accepted. + /// + /// If no engine is specified, C++ is selected for backward compatibility. /// - /// The data structure containing the text string and strategy identifier. - /// A structured response carrying the mutation payload. + /// + /// Requested engine identifier. + /// + /// + /// The resolved native string engine, or null when unavailable. + /// + private INativeStringEngine? ResolveEngine(string? engineType) + { + string requestedEngine = string.IsNullOrWhiteSpace(engineType) + ? "cpp" + : engineType.Trim(); + + string normalizedEngine = requestedEngine.ToLowerInvariant() switch + { + "cpp" => "CppEngine", + "cppengine" => "CppEngine", + + "rust" => "RustEngine", + "rustengine" => "RustEngine", + + _ => requestedEngine + }; + + return _engines.FirstOrDefault(engine => + engine.Name.Equals( + normalizedEngine, + StringComparison.OrdinalIgnoreCase)); + } + + /// + /// Transforms a single input sequence through the selected native engine. + /// + /// + /// The request containing text, conversion choice and optional engine. + /// + /// A structured response carrying the converted payload. [HttpPost("convert")] [ProducesResponseType(typeof(ConvertResponse), StatusCodes.Status200OK)] [ProducesResponseType(StatusCodes.Status400BadRequest)] @@ -150,38 +212,61 @@ public WordCaseController(IEnumerable engines) public IActionResult Convert([FromBody] ConvertRequest request) { if (request == null) - return BadRequest("The incoming conversion request structural instance cannot be null."); + { + return BadRequest( + "The incoming conversion request structural instance cannot be null."); + } - // Resolve engine dynamically: Defaults to "cpp" if EngineType is not provided - var engine = _engines.FirstOrDefault(e => - e.Name.Equals(request.EngineType ?? "cpp", StringComparison.OrdinalIgnoreCase)); + string requestedEngine = string.IsNullOrWhiteSpace(request.EngineType) + ? "cpp" + : request.EngineType.Trim(); - if (engine == null) - return BadRequest($"Engine '{request.EngineType}' not found."); + INativeStringEngine? engine = + ResolveEngine(request.EngineType); + + if (engine == null) + { + return BadRequest( + $"Engine '{requestedEngine}' not found."); + } try { if (request.Text == null) { - return Ok(new ConvertResponse { ConvertedText = null! }); + return Ok(new ConvertResponse + { + Input = null, + Choice = request.Choice, + ConvertedText = null! + }); } - if (request.Text == string.Empty) + if (request.Text.Length == 0) { - return Ok(new ConvertResponse { ConvertedText = string.Empty }); + return Ok(new ConvertResponse + { + Input = request.Text, + Choice = request.Choice, + ConvertedText = string.Empty + }); } - // Process across the unmanaged barrier interface routine - string result = engine.Convert(request.Text, request.Choice); + string result = engine.Convert( + request.Text, + request.Choice); - // Check for predefined error strings indicating a failure at the security gate - if (string.Equals(result, "ERROR_BUFFER_OVERFLOW_LIMIT_5MB", StringComparison.Ordinal)) + // Preserve the native security sentinel. + if (string.Equals( + result, + "ERROR_BUFFER_OVERFLOW_LIMIT_5MB", + StringComparison.Ordinal)) { - return Ok(new ConvertResponse - { + return Ok(new ConvertResponse + { Input = request.Text, Choice = request.Choice, - ConvertedText = "ERROR_BUFFER_OVERFLOW_LIMIT_5MB" + ConvertedText = "ERROR_BUFFER_OVERFLOW_LIMIT_5MB" }); } @@ -194,87 +279,141 @@ public IActionResult Convert([FromBody] ConvertRequest request) } catch (Exception ex) { - Debug.WriteLine($"Unexpected conversion pipeline runtime error occurred: {ex}"); - return StatusCode(StatusCodes.Status500InternalServerError, "An unexpected anomaly interrupted core conversion processing steps."); + Debug.WriteLine( + $"Unexpected conversion pipeline runtime error occurred: {ex}"); + + return StatusCode( + StatusCodes.Status500InternalServerError, + "An unexpected anomaly interrupted core conversion processing steps."); } } /// - /// Orchestrates concurrent conversions for an array of payloads, optimizing performance on specific CPU layouts. + /// Orchestrates concurrent conversions for an array of payloads. /// - /// The request payload containing multiple target items. - /// An ordered collection listing processed transformations. + /// + /// The request containing multiple text items, conversion choice + /// and optional engine. + /// + /// An ordered collection containing processed transformations. [HttpPost("convert-batch")] [ProducesResponseType(typeof(IEnumerable), StatusCodes.Status200OK)] [ProducesResponseType(StatusCodes.Status400BadRequest)] [ProducesResponseType(StatusCodes.Status500InternalServerError)] - public async Task ConvertBatchAsync([FromBody] BatchRequest request) + public async Task ConvertBatchAsync( + [FromBody] BatchRequest request) { if (request == null || request.Texts == null) { - return BadRequest("The batch conversion structural payload or input sequence context cannot be null values."); + return BadRequest( + "The batch conversion structural payload or input sequence context cannot be null values."); } - try + string requestedEngine = string.IsNullOrWhiteSpace(request.EngineType) + ? "cpp" + : request.EngineType.Trim(); + + INativeStringEngine? engine = + ResolveEngine(request.EngineType); + + if (engine == null) { - // Delegate downstream to the underlying parallelization management framework - var engine = _engines.FirstOrDefault(e => e.Name.Equals(request.EngineType ?? "cpp", StringComparison.OrdinalIgnoreCase)); + return BadRequest( + $"Engine '{requestedEngine}' not found."); + } - if (engine == null) - return BadRequest("Engine not found."); + try + { + IEnumerable results = + await engine.ConvertBatchAsync( + request.Texts, + request.Choice); - IEnumerable results = await engine.ConvertBatchAsync(request.Texts, request.Choice); - return Ok(results); } catch (ArgumentException ex) { - // Catch payload security size violations emitted during initial structural calculation steps + // Preserve payload/security validation failures. return BadRequest(ex.Message); } catch (Exception ex) { - Debug.WriteLine($"Unexpected parallel engine batch anomaly intercepted: {ex}"); - return StatusCode(StatusCodes.Status500InternalServerError, "Internal parallel pipeline task orchestration error."); + Debug.WriteLine( + $"Unexpected parallel engine batch anomaly intercepted: {ex}"); + + return StatusCode( + StatusCodes.Status500InternalServerError, + "Internal parallel pipeline task orchestration error."); } - } + } } + + /// + /// Provides native-engine performance comparison capabilities. + /// [ApiController] [Route("api/benchmark")] public sealed class BenchmarkController : ControllerBase { private readonly IEnumerable _engines; - // The DI container automatically provides all registered INativeStringEngine services + /// + /// Initializes a new instance of the class. + /// + /// All registered native string processing engines. public BenchmarkController(IEnumerable engines) { - _engines = engines; + _engines = engines + ?? throw new ArgumentNullException(nameof(engines)); } + /// + /// Compares the average conversion latency of all registered native engines. + /// + /// Input text used for benchmarking. + /// Conversion operation identifier. + /// Average conversion latency in milliseconds per engine. [HttpPost("compare")] - public IActionResult Compare([FromBody] string input, [FromQuery] int choice) + [ProducesResponseType(typeof(Dictionary), StatusCodes.Status200OK)] + [ProducesResponseType(StatusCodes.Status400BadRequest)] + public IActionResult Compare( + [FromBody] string input, + [FromQuery] int choice) { - var results = new Dictionary(); - const int iterations = 1000; + if (input == null) + { + return BadRequest("Benchmark input cannot be null."); + } + + var results = new Dictionary( + StringComparer.OrdinalIgnoreCase); - foreach (var engine in _engines) + const int warmupIterations = 50; + const int measurementIterations = 1000; + + foreach (INativeStringEngine engine in _engines) { - // 1. Warm-up: Essential for JIT and native library initialization - for (int i = 0; i < 50; i++) - { - engine.Convert(input, choice); + // Warm-up: Essential for JIT and native library initialization. + for (int i = 0; i < warmupIterations; i++) + { + engine.Convert(input, choice); } - // 2. Measurement: Use a high-resolution loop - var sw = Stopwatch.StartNew(); - for (int i = 0; i < iterations; i++) + // Measurement: Use a high-resolution stopwatch. + Stopwatch stopwatch = Stopwatch.StartNew(); + + for (int i = 0; i < measurementIterations; i++) { engine.Convert(input, choice); } - sw.Stop(); - // Calculate average latency (in milliseconds) for this specific engine - results[engine.Name] = sw.Elapsed.TotalMilliseconds / iterations; + stopwatch.Stop(); + + double averageMilliseconds = + stopwatch.Elapsed.TotalMilliseconds / + measurementIterations; + + results[engine.Name] = averageMilliseconds; } return Ok(results); diff --git a/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj b/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj index 432b3fa..14ea769 100644 --- a/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj +++ b/Backend/CaseConversionAPI/DotNetAPI/DotNetAPI.csproj @@ -8,33 +8,77 @@ 01a5a7b3-b364-42b2-9f4c-bbab55de8d89 + + + - - + + + + + + + + + + + + + + + + - - + + - - - + + - - - - - - - + + + + + - + + + + + + + + + + \ No newline at end of file diff --git a/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp b/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp index 31444e2..eb3b652 100644 --- a/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp +++ b/Backend/CaseConversionAPI/Tests/CppTests/AdvancedStringConversionTests.cpp @@ -63,6 +63,43 @@ // 1. ADVANCED CONVERSION TESTS (WITH LOGGING) // ============================================================ +TEST(AdvancedConversionTest, MixedCaseInputWithLogNew) { + std::string input = "hElLo WoRLd!"; + + LowerCaseConversion lower; + UpperCaseConversion upper; + CapitalizeWordsConversion cap; + SentenceCaseConversion sentence; + ToggleCaseConversion toggle; + AlternatingCaseConversion alternating; + + std::string result; + + result = ConversionResult(lower.convert(input)).get_c_str(); + logConversion("LowerCase", input, result); + EXPECT_EQ(result, "hello world!"); + + result = ConversionResult(upper.convert(input)).get_c_str(); + logConversion("UpperCase", input, result); + EXPECT_EQ(result, "HELLO WORLD!"); + + result = ConversionResult(cap.convert(input)).get_c_str(); + logConversion("CapitalizeWords", input, result); + EXPECT_EQ(result, "Hello World!"); + + result = ConversionResult(sentence.convert(input)).get_c_str(); + logConversion("SentenceCase", input, result); + EXPECT_EQ(result, "Hello world!"); + + result = ConversionResult(toggle.convert(input)).get_c_str(); + logConversion("ToggleCase", input, result); + EXPECT_EQ(result, "HeLlO wOrlD!"); + + result = ConversionResult(alternating.convert(input)).get_c_str(); + logConversion("AlternatingCase", input, result); + EXPECT_EQ(result, "HeLlO WoRlD!"); +} + TEST(AdvancedConversionTest, MixedCaseInputWithLog) { std::string input = "hElLo WoRLd!"; diff --git a/Backend/CaseConversionAPI/Tests/CppTests/StringConversionTests.cpp b/Backend/CaseConversionAPI/Tests/CppTests/StringConversionTests.cpp index e945757..3fc129d 100644 --- a/Backend/CaseConversionAPI/Tests/CppTests/StringConversionTests.cpp +++ b/Backend/CaseConversionAPI/Tests/CppTests/StringConversionTests.cpp @@ -219,6 +219,9 @@ TEST(ClientTest, ExecutesStrategy) { client.setStrategy(StringConversionFactory::create(ConversionType::Lower)); EXPECT_STREQ(client.execute("HELLO").get_c_str(), "hello"); + client.setStrategy(StringConversionFactory::create(ConversionType::Lower)); + EXPECT_STREQ(client.execute("HeLlO").get_c_str(), "hello"); + client.setStrategy(StringConversionFactory::create(ConversionType::Toggle)); EXPECT_STREQ(client.execute("AbC").get_c_str(), "aBc"); diff --git a/Backend/CaseConversionAPI/Tests/DotNetTests/DotNetAPI.Tests.csproj b/Backend/CaseConversionAPI/Tests/DotNetTests/DotNetAPI.Tests.csproj index cdc81f7..a210a02 100644 --- a/Backend/CaseConversionAPI/Tests/DotNetTests/DotNetAPI.Tests.csproj +++ b/Backend/CaseConversionAPI/Tests/DotNetTests/DotNetAPI.Tests.csproj @@ -6,6 +6,16 @@ enable false true + + latest + false + + + UTF-8 + 65001 + + $(IntermediateOutputPath)GeneratedFiles + @@ -20,8 +30,8 @@ - - + + libProcessStringDLL.dll PreserveNewest @@ -29,24 +39,27 @@ - - - - - $(NoWarn);NU1902;CS8625 - + + + + libProcessStringDLL.so + PreserveNewest + false + + - - latest - false - - $(IntermediateOutputPath)GeneratedFiles - + + + + libProcessStringDLL.dylib + PreserveNewest + false + + - - UTF-8 - 65001 + + $(NoWarn);NU1902;CS8625 \ No newline at end of file diff --git a/README.md b/README.md index cdde360..3c45f93 100644 --- a/README.md +++ b/README.md @@ -110,7 +110,7 @@ Rather than optimizing specifically for simple case conversion, the project focu This project is built to safely expose high-performance C++ logic to a managed .NET web stack. We focus on a clear separation between native processing, API orchestration, and frontend delivery to keep the native code fast and the web layer stable. -* The Engine (C++17): This is our performance core. It uses Strategy and Factory patterns so we can add new processing logic without touching the core engine. +* The Engine (C++17): This is our performance core. It uses Strategy and Factory Patterns so we can add new processing logic without touching the core engine. * The Bridge (C-style ABI): Since .NET cannot communicate directly with C++ classes, we built a custom wrapper. It defines a clear memory contract (who allocates, who frees) to prevent memory leaks across the native-managed boundary.