CodExt is a Python library and command-line tool that extends the standard library's codecs with over 120 custom encodings for data transformation. It provides encoding/decoding functionalities across domains including base encodings (baseN, base45, base85, etc.), cryptography (Vigenère, RSA, XOR), compression (gzip, LZ77/LZ78), steganography, and language-based transformations (Leetspeak, Morse, Braille). The system features a heuristic-based guess mode for automated multi-layered decoding and a macro system for chaining codecs. Architected as a plugin-based library, it allows dynamic registration of new codecs and is designed for CTF, security, and data obfuscation tasks. The codebase demonstrates strong modularity with clear separation of concerns between core functionality, codec implementations, and utility modules.
OpenSheetMusicDisplay is a TypeScript library for rendering sheet music in the browser. It parses MusicXML files (including compressed .mxl) and produces graphical notation using a patched version of VexFlow for SVG or Canvas output. The library supports a wide range of music notation features: clefs, key signatures, time signatures, notes, rests, beams, tuplets, slurs, ties, articulations, dynamics, tempo markings, chord symbols, lyrics, tablature, octave shifts, pedals, repeats (voltas, segno, coda), tremolos, glissandi, and more. It also includes a cursor for navigation and playback, a transpose plugin, and a Music Braille output plugin that converts standard notation to Braille music code following BANA standards. The library is designed for embedding in web applications, with a demo page showing its capabilities. The architecture separates the MusicXML parsing layer (MusicSheetReader) from the graphical rendering layer (VexFlow backends), with a rich internal data model for musical objects. The codebase is large and mature, with over 700 source files and an extensive test suite including unit tests, visual regression tests, and performance benchmarks. However, it has some technical debt: large monolithic classes (e.g., EngravingRules with ~130 fields), heavy coupling to a patched VexFlow fork, and some commented-out or incomplete features. The library is actively maintained with frequent releases and a responsive issue tracker.
This repository is a collection of web demos and examples for MathJax version 4, the JavaScript math rendering library. It demonstrates various ways to integrate MathJax into web pages, including standard TeX/MathML input with CHTML/SVG output, equation numbering and referencing, interactive reveal/toggle steps, speech generation, and compatibility with MathJax v2 configurations. The repo also contains a substantial custom font extension named 'mathjax-newcm' (New Computer Modern) that provides extensive glyph metrics and SVG path data for mathematical typesetting, with a specific focus on braille output (the 'euro-braille' subdirectory). This font data is split into dynamic chunks loaded on demand by MathJax. The codebase is primarily illustrative—each demo is a self-contained HTML page with accompanying JavaScript. The custom component and TeX extension examples show how to build tailored MathJax bundles using internal APIs. The configuration converter is a standalone utility that parses legacy MathJax v2 configuration objects and generates equivalent v4 configuration. While the demos are functional and well-organized, the font data files are minified/generated artifacts that are difficult to maintain manually, and several parts rely on MathJax internal APIs that may change across versions. The euro-braille and euro-braille-old directories contain near-duplicate font data with version drift, indicating a maintenance challenge. Overall, this repo serves as a practical reference for MathJax v4 integration patterns and custom font development, but it is not a production library itself. The most reusable components are the custom component assembly pattern, the TeX extension template, and the configuration converter utility.