Awesome GitHub RepositoriesString Parsing

oxc is a high-performance JavaScript toolchain developed in Rust for parsing, transforming, and analyzing JavaScript and TypeScript source code. It provides a set of core utilities including a parser that converts code into an abstract syntax tree, a linter for identifying problematic patterns, a formatter for standardizing visual style, and a minifier for reducing production file sizes. The project focuses on high-performance execution through a system design that utilizes single-pass parsing, zero-copy string slicing, and parallel worker processing to handle large codebases. It further opti

jsdom is a Node.js implementation of web standards that functions as a headless browser emulator. It provides a JavaScript execution environment and an HTML and XML parser to simulate a browser environment on the server side, implementing various web APIs and W3C standards. The project distinguishes itself by providing a sandboxed runtime for executing scripts embedded in HTML or external files. It includes specialized polyfills for the Canvas API and manages session state through HTTP cookie management. Its broader capabilities cover network interaction via request interception and resource

This project is a UUID generation library providing a standards-compliant implementation of RFC 4122. It serves as a tool for creating and validating universally unique identifiers across multiple versions to ensure global uniqueness and prevent data collisions. The library supports several generation methods, including random-based entropy, timestamp sequencing, and namespace-based hashing. It also includes utilities for identifier validation, parsing, and converting identifiers between hexadecimal string representations and binary byte arrays. A command line utility is included for the man

goquery is a Go HTML parsing library and CSS selector engine used to isolate and retrieve specific text or attributes from HTML documents. It functions as an HTML DOM manipulator that converts raw HTML strings into a structured tree for programmatic navigation and search. The library provides a fluent interface for chaining selection and filtering operations and utilizes a wrapper-based abstraction to simplify data extraction and manipulation of nodes. It employs an iterator-based processing mechanism to apply operations to every node within a matched selection. Its primary capabilities cove

Chameleon is a color framework for Swift and Objective-C applications. It provides systems for programmatic color palette generation, global theme orchestration, hexadecimal conversion, and the extraction of visual data from images. The library includes a dynamic theme engine for applying global visual styles and luminance adjustments across an interface. It features a palette generator for creating analogous, complementary, and triadic color schemes based on a seed color, and an image color extractor to derive average colors or palettes from images. The framework covers a range of color man

Chameleon is a color framework for Swift and Objective-C applications, providing a toolkit for managing dynamic palettes, gradient libraries, and hexadecimal conversions. It functions as a system for creating harmonious color schemes and calculating contrasting text colors based on background luminance. The project includes an image color extractor that analyzes images to generate matching color schemes or calculate average colors for user interfaces. It also features a gradient color library for creating and applying smooth transitions to backgrounds and text elements. The framework covers

Clojure is a general-purpose, functional programming language hosted on the Java Virtual Machine. It is a homoiconic S-expression language that represents programs as nested data structures, allowing code to be manipulated and evaluated as data. The project provides a framework for JVM interoperability, enabling the invocation of Java methods and integration with other JVM-based languages. It distinguishes itself through a persistent data structure library that uses bitmapped vector tries to manage immutable collections and a programmatic REPL for interactive software development and real-tim

Gop 是一种通用编程语言和跨语言编译器，旨在将来自多个编程生态系统的资产和库统一到一个共享环境中。它使用针对不同目标环境定制的专用后端，将高级源代码转换为可执行二进制文件。 该项目具有自然语言编程系统，可将用纯英语编写的人类可读指令转换为可执行代码。它还充当跨语言工具，在编译过程中导入并集成来自不同语言生态系统的外部库和资产。 其功能面包括一个将文件名映射到 API 端点的基于文件的 Web 框架、一个用于数据提取的基于 DOM 的 HTML 解析器，以及一个利用事件驱动对话系统的基于 Actor 的 2D 游戏引擎。此外，它还为执行 Shell 命令和用于 DevOps 任务自动化的管理脚本提供了简化的语法。

ReflectionDocBlock is a PHP docblock parser and doc-comment metadata extractor. It functions as a reflection wrapper that extends the standard PHP Reflection API to convert raw documentation blocks into structured objects. The library provides tools for PHP documentation parsing and reflection tooling. It enables the extraction of structured metadata and annotations from reflection objects or raw doc-comment strings to support automated API documentation and static code analysis.

This project is an interactive programming education resource and tutorial designed for learning the Rust programming language and systems programming concepts. It provides a collection of runnable and editable code examples that serve as a practical reference for language syntax and implementation. The resource features an interactive code sandbox that allows users to execute and test code snippets in real time. It emphasizes the verification of technical accuracy by executing embedded code blocks during the build process to ensure all examples remain functional. The content covers a compre

decimal.js 是一个 JavaScript 高精度数学库，旨在执行数学计算时避免标准浮点数带来的舍入误差。它提供了一套高精度数学工具包，支持执行基本算术运算和高级超越函数，并允许配置有效数字位数。 该库实现了基于十进制的数学运算，支持多种舍入模式和任意精度设置。它包含一个数字字符串解析器，可将十进制、十六进制、二进制和八进制字符串转换为高精度数值类型，并提供了一个将高精度十进制值转换为分母受限分数的工具。 其功能涵盖基本算术、高精度数值比较，以及根号、指数、对数和三角函数等高级数学运算。该工具包还提供数值输出格式化功能，并利用系统熵生成安全的随机数。

This is an arbitrary-precision decimal library and fixed-point math implementation used to eliminate floating-point rounding errors. It provides tools for high-precision arithmetic, a numerical analysis toolkit, and a database decimal mapper to ensure numerical accuracy in financial and scientific calculations. The library includes specialized serialization tools to transform high-precision numbers into SQL database types, JSON, and XML formats without losing precision. It also implements a variety of rounding strategies, including banker and cash rounding, and provides mechanisms for decimal

Esprima 是一个 JavaScript 解析器，可将源代码转换为结构化的抽象语法树。它实现了规范驱动的语法以确保符合 ECMAScript 标准，从而能够对 JavaScript 程序进行编程分析和转换。 该项目提供词法分词功能，将源代码分解为单个符号，并提供静态语法验证，以在不执行代码的情况下验证脚本是否格式正确。 其功能涵盖 JavaScript 静态分析、词法分析以及抽象语法树的生成。

JSON5 is a parser and serializer for a human-readable configuration format that extends JSON. It serves as a JavaScript-based data parser that allows for a more flexible version of the JSON specification to simplify manual editing of data files. The project provides capabilities to support comments, trailing commas, and multi-line strings. It includes utilities to convert this extended syntax into standard JSON for compatibility with tools requiring strict specifications. The library covers data serialization, string parsing, and structural syntax validation. It also provides integration for

Hamcrest PHP is a declarative assertion framework and matcher library used for unit testing in PHP. It provides a set of flexible matchers to verify object states, data types, and collection contents. The library includes specialized tools for XML verification using XPath expressions to analyze document structures and element content. It also allows for the creation of complex validation rules by combining multiple independent matchers through logical operators. The framework covers a broad range of validation primitives, including string content inspection, numeric comparison, and object pr

Goja is a JavaScript engine and ECMAScript compliant interpreter implemented entirely in Go. It serves as an embedded scripting engine that allows Go applications to execute JavaScript code and integrate a programmable scripting layer without relying on Cgo or external native dependencies. The project functions as a bridge between Go and JavaScript, enabling bidirectional data exchange and function invocation. It allows Go hosts to expose native structs, slices, and maps as JavaScript objects and arrays, while providing mechanisms to export script values and functions back into native Go type

This project is a PHP docblock annotation parser and reflection metadata tool designed to extract structured metadata from doc-comments and convert them into class instances. It functions as a system for retrieving and managing custom metadata attached to classes, methods, and properties. The library includes a metadata caching system to store parsed results, which reduces the performance overhead associated with repeated reflection calls and string parsing. It also serves as a static analysis utility for validating source code structure and enforcing coding standards through automated docblo

Nokogiri is an XML and HTML parsing library that builds navigable document trees from strings, files, or URLs using native C parsers for speed and standards compliance. It provides a CSS selector engine that translates CSS3 selectors into XPath expressions for querying nodes, an XPath query interface with namespace support, a document manipulation toolkit for modifying parsed documents, XSD schema validation, and XSLT transformation capabilities. The library wraps libxml2 and libxslt C libraries with Ruby bindings for high-performance parsing, and integrates Google's Gumbo parser for standard

Magic Enum is a C++ library that provides compile-time reflection for enumerations, enabling conversion between enum values and their string names, iteration over enum members, and validation of enum values without relying on macros or external code generation. It uses template metaprogramming and constexpr functions to extract enum information directly from the compiler's internal representation, making the entire reflection process static and free of runtime overhead. The library distinguishes itself through its comprehensive set of compile-time enum utilities, including the ability to coun

This is an RFC 4122 UUID package for Go that generates, parses, and validates universally unique identifiers. It provides a library for creating UUIDs that conform to standard formatting rules, along with utilities for inspecting UUID properties such as variant, version, and nil status. The package supports DCE 1.1 Security Extension UUID generation and parsing, and includes byte-level UUID construction by directly manipulating 16-byte arrays with version and variant bits. It validates UUID strings against RFC 4122 formatting rules, including hyphens and hexadecimal characters, and can detect