Finch is a Swift CLI tool that generates well-formatted changelogs by comparing two Git versions (tags or branches). It parses commit messages using a configurable tag convention (e.g., `[feature]`) and groups commits into sections (Features, Bug Fixes, etc.) based on user-defined YAML configuration. The tool supports custom format strings with placeholders for tags, messages, contributor handles, and commit hyperlinks, as well as cascading configuration merging from multiple file locations. It is built with SwiftCLI for command routing, Yams for YAML parsing, and the Version library for semantic versioning. The architecture is modular with separate targets for core models, app logic, and utilities, and includes comprehensive unit and snapshot tests.
This is the swagger-codegen-generators repository, a Java library that provides code generation for client and server stubs from OpenAPI (formerly Swagger) specifications. It is not a standalone application but a library consumed by the swagger-codegen v3 tool (or used programmatically). The codebase implements a template-driven architecture where language-specific generators extend abstract base classes (e.g., AbstractJavaCodegen, AbstractTypeScriptClientCodegen) and use Handlebars/Mustache templates to produce output. It supports a wide range of languages including Java, C#, Go, Python, Ruby, Swift, TypeScript, Kotlin, Dart, PHP, Scala, R, and Node.js, with frameworks like Spring, JAX-RS, Micronaut, Vert.x, ASP.NET Core, and more. Key file patterns include feature interfaces for composable generator capabilities (e.g., BeanValidationFeatures, GzipFeatures), Handlebars helper lambdas for template logic, and schema handlers for composed schemas (allOf/oneOf/anyOf). The project has extensive test coverage with unit and integration tests for model and API generation. While the core architecture is solid, the base class DefaultCodegenConfig is monolithic and the hundreds of template files pose maintenance drift risks. The project is actively maintained with CI workflows, issue templates, and recent commits.
Sailfish is a compile-time template engine for Rust, designed for high-performance server-side rendering. Unlike runtime template engines that parse templates on every request, Sailfish uses procedural macros to parse `.stpl` files and generate optimized Rust code at compile time. This architecture ensures type safety, eliminates runtime parsing overhead, and allows for aggressive compiler optimizations. The engine integrates seamlessly with Rust's ecosystem, supporting features like embedded Rust code, filters, and includes within templates. The architecture is split into three main crates: `sailfish-compiler` handles the parsing and translation of template syntax into Rust AST, `sailfish-macros` provides the derive macros that trigger compilation, and `sailfish` contains the runtime logic for rendering and buffer management. The project emphasizes performance through custom memory allocation strategies and SIMD-optimized HTML escaping routines. It also includes comprehensive editor support via Tree-sitter grammars and VS Code/Vim syntax extensions. While the core engine is robust and well-architected, there are significant maintenance inconsistencies. The `Cargo.toml` specifies `edition = "2024"`, which is not a stable Rust edition, indicating experimental or forward-looking configuration. Additionally, the `CHANGELOG.md` lags significantly behind the actual version in `Cargo.toml` (v0.4.0 vs 0.11.2), suggesting documentation is not kept in sync with releases. Despite these issues, the codebase demonstrates high craftsmanship in its performance-critical components.
Tilt is a Ruby library that provides a generic interface to a multitude of template engines. It abstracts away the differences between engines like ERB, Haml, Markdown variants, and many others, offering a unified API for template loading, compilation, and rendering. The architecture is built around a central Tilt module, a Mapping class that associates file extensions with template implementations, and a base Template class that individual engines subclass. The library supports lazy loading of template engines, template caching, and pipeline composition. It is widely used in the Ruby ecosystem, particularly in web frameworks like Sinatra and Rack. The repository under rtomayko/tilt is no longer maintained, as the project has moved to jeremyevans/tilt, but this version represents the stable 2.x series. The code is well-structured and demonstrates good software engineering practices, though some template implementations are deprecated or rely on older gems.