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author | Matthias Beyer <mail@beyermatthias.de> | 2016-05-24 16:30:06 +0200 |
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committer | Matthias Beyer <mail@beyermatthias.de> | 2016-06-09 16:52:34 +0200 |
commit | 70f12dbef7c00c6a711afc9568542d8c9cb3d0d6 (patch) | |
tree | 5f850c71ecf86363d80cda0885c8a6167fc8f0e4 /libimagentrymarkdown/src | |
parent | fb2934a96dade2a7a98a9c9e11d57ba08f8c567d (diff) |
Implement link extractor
Diffstat (limited to 'libimagentrymarkdown/src')
-rw-r--r-- | libimagentrymarkdown/src/link.rs | 78 |
1 files changed, 75 insertions, 3 deletions
diff --git a/libimagentrymarkdown/src/link.rs b/libimagentrymarkdown/src/link.rs index 02526486..4699e69a 100644 --- a/libimagentrymarkdown/src/link.rs +++ b/libimagentrymarkdown/src/link.rs @@ -1,8 +1,80 @@ use result::Result; -pub type Link = String; +use hoedown::renderer::Render; +use hoedown::Buffer; +use hoedown::Markdown; + +pub struct Link { + pub title: String, + pub link: String, +} + +struct LinkExtractor { + links: Vec<Link>, +} + +impl LinkExtractor { + + pub fn new() -> LinkExtractor { + LinkExtractor { links: vec![] } + } + + pub fn links(self) -> Vec<Link> { + self.links + } + +} + +impl Render for LinkExtractor { + + fn link(&mut self, + _: &mut Buffer, + content: Option<&Buffer>, + link: Option<&Buffer>, + _: Option<&Buffer>) + -> bool + { + let link = link.and_then(|l| l.to_str().ok()).map(String::from); + let content = content.and_then(|l| l.to_str().ok()).map(String::from); + + match (link, content) { + (Some(link), Some(content)) => { + self.links.push(Link { link: link, title: content }); + false + }, + + (_, _) => { + false + }, + } + + } + +} + +pub fn extract_links(buf: &str) -> Vec<Link> { + let mut le = LinkExtractor::new(); + le.render(&Markdown::new(buf)); + le.links() +} + +#[cfg(test)] +mod test { + use super::{Link, extract_links}; + + #[test] + fn test_one_link() { + let testtext = "Some [example text](http://example.com)."; + + let exp = Link { + title: String::from("example text"), + link: String::from("http://example.com"), + }; + + let mut links = extract_links(testtext); + assert_eq!(1, links.len()); + assert_eq!(exp, links.pop().unwrap()) + } -pub fn extract_links(buf: &str) -> Result<Vec<Link>> { - unimplemented!() } |