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64 lines
1.9 KiB
Markdown
64 lines
1.9 KiB
Markdown
# TARTRAZINE
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Tartrazine is a library to syntax-highlight code. It is
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a port of [Pygments](https://pygments.org/) to
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[Crystal](https://crystal-lang.org/). Kind of.
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It's not currently usable because it's not finished, but:
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* The lexers work for the implemented languages
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* The provided styles work
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* There is a very very simple HTML formatter
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# A port of what? Why "kind of"?
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Because I did not read the Pygments code. And this is actually
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based on [Chroma](https://github.com/alecthomas/chroma) ...
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although I did not read that code either.
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Chroma has taken most of the Pygments lexers and turned them into
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XML descriptions. What I did was take those XML files from Chroma
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and a pile of test cases from Pygments, and I slapped them together
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until the tests passed and my code produced the same output as
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Chroma. Think of it as *extreme TDD*.
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Currently the pass rate for tests in the supported languages
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is `96.8%`, which is *not bad for a couple days hacking*.
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This only covers the RegexLexers, which are the most common ones,
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but it means the supported languages are a subset of Chroma's, which
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is a subset of Pygments'.
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Currently Tartrazine supports ... 241 languages.
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It has 332 themes (64 from Chroma, the rest are base16 themes via
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[Sixteen](https://github.com/ralsina/sixteen)
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## Installation
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This has a CLI but it's not generally usable.
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## Usage
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This works:
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```crystal
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require "tartrazine"
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lexer = Tartrazine.lexer("crystal")
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theme = Tartrazine.theme("catppuccin-macchiato")
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puts Tartrazine::Html.new.format(File.read(ARGV[0]), lexer, theme)
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```
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## Contributing
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1. Fork it (<https://github.com/ralsina/tartrazine/fork>)
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2. Create your feature branch (`git checkout -b my-new-feature`)
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3. Commit your changes (`git commit -am 'Add some feature'`)
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4. Push to the branch (`git push origin my-new-feature`)
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5. Create a new Pull Request
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## Contributors
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- [Roberto Alsina](https://github.com/ralsina) - creator and maintainer
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