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105 lines
3.9 KiB
Markdown
105 lines
3.9 KiB
Markdown
Hoedown
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=======
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[](https://travis-ci.org/hoedown/hoedown)
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`Hoedown` is a revived fork of [Sundown](https://github.com/vmg/sundown),
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the Markdown parser based on the original code of the
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[Upskirt library](http://fossil.instinctive.eu/libupskirt/index)
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by Natacha Porté.
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Features
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--------
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* **Fully standards compliant**
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`Hoedown` passes out of the box the official Markdown v1.0.0 and v1.0.3
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test suites, and has been extensively tested with additional corner cases
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to make sure its output is as sane as possible at all times.
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* **Massive extension support**
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`Hoedown` has optional support for several (unofficial) Markdown extensions,
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such as non-strict emphasis, fenced code blocks, tables, autolinks,
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strikethrough and more.
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* **UTF-8 aware**
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`Hoedown` is fully UTF-8 aware, both when parsing the source document and when
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generating the resulting (X)HTML code.
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* **Tested & Ready to be used on production**
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`Hoedown` has been extensively security audited, and includes protection against
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all possible DOS attacks (stack overflows, out of memory situations, malformed
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Markdown syntax...).
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We've worked very hard to make `Hoedown` never leak or crash under *any* input.
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**Warning**: `Hoedown` doesn't validate or post-process the HTML in Markdown documents.
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Unless you use `HTML_ESCAPE` or `HTML_SKIP`, you should strongly consider using a
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good post-processor in conjunction with Hoedown to prevent client-side attacks.
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* **Customizable renderers**
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`Hoedown` is not stuck with XHTML output: the Markdown parser of the library
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is decoupled from the renderer, so it's trivial to extend the library with
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custom renderers. A fully functional (X)HTML renderer is included.
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* **Optimized for speed**
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`Hoedown` is written in C, with a special emphasis on performance. When wrapped
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on a dynamic language such as Python or Ruby, it has shown to be up to 40
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times faster than other native alternatives.
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* **Zero-dependency**
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`Hoedown` is a zero-dependency library composed of some `.c` files and their
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headers. No dependencies, no bullshit. Only standard C99 that builds everywhere.
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* **Additional features**
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`Hoedown` comes with a fully functional implementation of SmartyPants,
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a separate autolinker, escaping utilities, buffers and stacks.
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Bindings
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--------
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You can see a community-maintained list of `Hoedown` bindings at
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[the wiki](https://github.com/hoedown/hoedown/wiki/Bindings). There is also a
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[migration guide](https://github.com/hoedown/hoedown/wiki/Migration-Guide)
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available for authors of Sundown bindings.
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Help us
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-------
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`Hoedown` is all about security. If you find a (potential) security vulnerability in the
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library, or a way to make it crash through malicious input, please report it to us by
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emailing the private [Hoedown Security](mailto:hoedown-security@googlegroups.com)
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mailing list. The `Hoedown` security team will review the vulnerability and work with you
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to reproduce and resolve it.
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Unicode character handling
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--------------------------
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Given that the Markdown spec makes no provision for Unicode character handling, `Hoedown`
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takes a conservative approach towards deciding which extended characters trigger Markdown
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features:
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* Punctuation characters outside of the U+007F codepoint are not handled as punctuation.
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They are considered as normal, in-word characters for word-boundary checks.
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* Whitespace characters outside of the U+007F codepoint are not considered as
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whitespace. They are considered as normal, in-word characters for word-boundary checks.
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Install
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-------
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Just typing `make` will build `Hoedown` into a dynamic library and create the `hoedown`
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and `smartypants` executables, which are command-line tools to render Markdown to HTML
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and perform SmartyPants, respectively.
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If you are using [CocoaPods](http://cocoapods.org), just add the line `pod 'hoedown'` to your Podfile and call `pod install`.
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Or, if you prefer, you can just throw the files at `src` into your project.
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