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rustdoc: Changed section headers anchor rendering

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This commit is contained in:
Simon Mazur 2015-09-18 15:05:35 +03:00
parent fd38a75077
commit b8cfa59be0
1 changed files with 23 additions and 5 deletions
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28
src/librustdoc/html/markdown.rs
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@ -283,19 +283,37 @@ pub fn render(w: &mut fmt::Formatter, s: &str, print_toc: bool) -> fmt::Result {
str::from_utf8(s).unwrap().to_string()
};
// Transform the contents of the header into a hyphenated string
let id = s.split_whitespace().map(|s| s.to_ascii_lowercase())
.collect::<Vec<String>>().join("-");
// Discard '<em>', '<code>' tags and some escaped characters,
// transform the contents of the header into a hyphenated string
// without non-alphanumeric characters other than '-' and '_'.
//
// This is a terrible hack working around how hoedown gives us rendered
// html for text rather than the raw text.
let mut id = s.clone();
let repl_sub = vec!["<em>", "</em>", "<code>", "</code>",
"&lt;", "&gt;", "&amp;", "&#39;", "&quot;"];
for sub in repl_sub {
id = id.replace(sub, "");
}
let id = id.chars().filter_map(|c| {
if c.is_alphanumeric() || c == '-' || c == '_' {
if c.is_ascii() {
Some(c.to_ascii_lowercase())
} else {
Some(c)
}
} else if c.is_whitespace() && c.is_ascii() {
Some('-')
} else {
None
}
}).collect::<String>();
let opaque = unsafe { (*data).opaque as *mut hoedown_html_renderer_state };
let opaque = unsafe { &mut *((*opaque).opaque as *mut MyOpaque) };
// Make sure our hyphenated ID is unique for this page
let id = USED_HEADER_MAP.with(|map| {
let id = id.replace("<code>", "").replace("</code>", "").to_string();
let id = match map.borrow_mut().get_mut(&id) {
None => id,
Some(a) => { *a += 1; format!("{}-{}", id, *a - 1) }