Crate pulldown_cmark

source ·
Expand description

Pull parser for CommonMark. This crate provides a Parser struct which is an iterator over Events. This iterator can be used directly, or to output HTML using the HTML module.

By default, only CommonMark features are enabled. To use extensions like tables, footnotes or task lists, enable them by setting the corresponding flags in the Options struct.

§Example

use pulldown_cmark::{Parser, Options};

let markdown_input = "Hello world, this is a ~~complicated~~ *very simple* example.";

// Set up options and parser. Strikethroughs are not part of the CommonMark standard
// and we therefore must enable it explicitly.
let mut options = Options::empty();
options.insert(Options::ENABLE_STRIKETHROUGH);
let parser = Parser::new_ext(markdown_input, options);

// Write to String buffer.
let mut html_output = String::new();
pulldown_cmark::html::push_html(&mut html_output, parser);

// Check that the output is what we expected.
let expected_html = "<p>Hello world, this is a <del>complicated</del> <em>very simple</em> example.</p>\n";
assert_eq!(expected_html, &html_output);

Note that consecutive text events can happen due to the manner in which the parser evaluates the source. A utility TextMergeStream exists to improve the comfort of iterating the events:

use pulldown_cmark::{Event, Parser, TextMergeStream};

let markdown_input = "Hello world, this is a ~~complicated~~ *very simple* example.";

let iterator = TextMergeStream::new(Parser::new(markdown_input));

for event in iterator {
    match event {
        Event::Text(text) => println!("{}", text),
        _ => {}
    }
}

Re-exports§

Modules§

  • html
    HTML renderer that takes an iterator of events as input.
  • utils
    Miscellaneous utilities to incraese comfort. Special thanks to:

Structs§

  • BrokenLink
  • DefaultBrokenLinkCallback
    Broken link callback that does nothing.
  • InlineStr
    An inline string that can contain almost three words of utf-8 text.
  • InvalidHeadingLevel
    Returned when trying to convert a usize into a Heading but it fails because the usize isn’t a valid heading level
  • OffsetIter
    Markdown event and source range iterator.
  • Options
    Option struct containing flags for enabling extra features that are not part of the CommonMark spec.
  • Parser
    Markdown event iterator.
  • RefDefs
    Keeps track of the reference definitions defined in the document.

Enums§

  • Alignment
    Table column text alignment.
  • CodeBlockKind
    Codeblock kind.
  • CowStr
    A copy-on-write string that can be owned, borrowed or inlined.
  • Event
    Markdown events that are generated in a preorder traversal of the document tree, with additional End events whenever all of an inner node’s children have been visited.
  • HeadingLevel
  • LinkType
    Type specifier for inline links. See the Tag::Link for more information.
  • MetadataBlockKind
  • Tag
    Tags for elements that can contain other elements.
  • TagEnd
    The end of a Tag.

Traits§