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47 lines
2.4 KiB
Go
47 lines
2.4 KiB
Go
// Package blackfriday is a markdown processor.
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//
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// It translates plain text with simple formatting rules into an AST, which can
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// then be further processed to HTML (provided by Blackfriday itself) or other
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// formats (provided by the community).
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//
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// The simplest way to invoke Blackfriday is to call the Run function. It will
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// take a text input and produce a text output in HTML (or other format).
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//
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// A slightly more sophisticated way to use Blackfriday is to create a Markdown
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// processor and to call Parse, which returns a syntax tree for the input
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// document. You can leverage Blackfriday's parsing for content extraction from
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// markdown documents. You can assign a custom renderer and set various options
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// to the Markdown processor.
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//
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// If you're interested in calling Blackfriday from command line, see
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// https://github.com/russross/blackfriday-tool.
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//
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// Sanitized Anchor Names
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//
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// Blackfriday includes an algorithm for creating sanitized anchor names
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// corresponding to a given input text. This algorithm is used to create
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// anchors for headings when AutoHeadingIDs extension is enabled. The
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// algorithm is specified below, so that other packages can create
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// compatible anchor names and links to those anchors.
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//
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// The algorithm iterates over the input text, interpreted as UTF-8,
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// one Unicode code point (rune) at a time. All runes that are letters (category L)
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// or numbers (category N) are considered valid characters. They are mapped to
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// lower case, and included in the output. All other runes are considered
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// invalid characters. Invalid characters that precede the first valid character,
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// as well as invalid character that follow the last valid character
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// are dropped completely. All other sequences of invalid characters
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// between two valid characters are replaced with a single dash character '-'.
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//
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// SanitizedAnchorName exposes this functionality, and can be used to
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// create compatible links to the anchor names generated by blackfriday.
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// This algorithm is also implemented in a small standalone package at
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// github.com/shurcooL/sanitized_anchor_name. It can be useful for clients
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// that want a small package and don't need full functionality of blackfriday.
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package blackfriday
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// NOTE: Keep Sanitized Anchor Name algorithm in sync with package
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// github.com/shurcooL/sanitized_anchor_name.
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// Otherwise, users of sanitized_anchor_name will get anchor names
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// that are incompatible with those generated by blackfriday.
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