$ show bloomberg/xcdiff
This repository contains a tool named `xcdiff` for comparing two Xcode project files (.xcodeproj) and outputting their differences in multiple formats. It is designed as both a command-line utility and a reusable Swift library (XCDiffCore). The tool analyzes structural and configuration differences between projects, including targets, sources, headers, resources, build settings, and dependencies. The architecture follows a modular, plugin-like design where each aspect of the project comparison is handled by a separate comparator implementing a common protocol. This allows for easy extension with new comparison types. Results are rendered through a similarly abstracted renderer system, supporting output formats such as plain text, JSON, markdown, and HTML. The tool is actively maintained and keeps pace with evolving Xcode project formats, as evidenced by fixtures for recent Xcode features like synchronized groups.
The LLM identified 3 files worth highlighting for reuse:
Defines the Comparator protocol that enables adding new comparison types for Xcode projects. This protocol-based extension point allows developers to implement custom comparators without modifying the core logic, demonstrating the strategy pattern and promoting loose coupling.
Provides the Renderer protocol for outputting comparison results in various formats (console, JSON, markdown, HTML). This abstraction allows new output formats to be added easily, showcasing the strategy pattern and enhancing the tool's versatility.
Defines the CompareResult and ProjectCompareResult structures that encapsulate the differences between two Xcode projects. This consistent data model is used throughout the core to represent comparison outcomes, enabling clear and uniform result processing.