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Add support for image, rules and footnotes

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This commit is contained in:
Guillaume Gomez 2017-03-29 19:48:06 -06:00
parent cf69238b82
commit 08a741eabf
2 changed files with 146 additions and 28 deletions
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139
src/librustdoc/html/markdown.rs
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@ -133,11 +133,37 @@ macro_rules! event_loop_break {
}}
}
struct ParserWrapper<'a> {
parser: Parser<'a>,
footnotes: Vec<String>,
current_footnote_id: u16,
}
impl<'a> ParserWrapper<'a> {
pub fn new(s: &'a str) -> ParserWrapper<'a> {
ParserWrapper {
parser: Parser::new_ext(s, pulldown_cmark::OPTION_ENABLE_TABLES |
pulldown_cmark::OPTION_ENABLE_FOOTNOTES),
footnotes: Vec::new(),
current_footnote_id: 1,
}
}
pub fn next(&mut self) -> Option<Event<'a>> {
self.parser.next()
}
pub fn get_next_footnote_id(&mut self) -> u16 {
let tmp = self.current_footnote_id;
self.current_footnote_id += 1;
tmp
}
}
pub fn render(w: &mut fmt::Formatter,
s: &str,
print_toc: bool,
shorter: MarkdownOutputStyle) -> fmt::Result {
fn code_block(parser: &mut Parser, buffer: &mut String, lang: &str) {
fn code_block(parser: &mut ParserWrapper, buffer: &mut String, lang: &str) {
let mut origtext = String::new();
while let Some(event) = parser.next() {
match event {
@ -215,8 +241,8 @@ pub fn render(w: &mut fmt::Formatter,
});
}
fn heading(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, level: i32) {
fn heading(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle, level: i32) {
let mut ret = String::new();
let mut id = String::new();
event_loop_break!(parser, toc_builder, shorter, ret, true, &mut Some(&mut id),
@ -249,32 +275,48 @@ pub fn render(w: &mut fmt::Formatter,
ret, lvl = level, id = id, sec = sec));
}
fn inline_code(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, id: &mut Option<&mut String>) {
fn inline_code(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle,
id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, false, id, Event::End(Tag::Code));
buffer.push_str(&format!("<code>{}</code>",
Escape(&collapse_whitespace(content.trim_right()))));
}
fn link(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
fn link(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, url: &str, title: &str,
id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, true, id,
Event::End(Tag::Link(_, _)));
if title.is_empty() {
buffer.push_str(&format!("<a href=\"{}\">{}</a>", url, content));
} else {
buffer.push_str(&format!("<a href=\"{}\" title=\"{}\">{}</a>",
url, Escape(title), content));
}
}
fn image(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, url: &str, mut title: String,
id: &mut Option<&mut String>) {
event_loop_break!(parser, toc_builder, shorter, title, true, id,
Event::End(Tag::Link(_, _)));
buffer.push_str(&format!("<a href=\"{}\">{}</a>", url, title));
Event::End(Tag::Image(_, _)));
buffer.push_str(&format!("<img src=\"{}\" alt=\"{}\">", url, title));
}
fn paragraph(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, id: &mut Option<&mut String>) {
fn paragraph(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle,
id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, true, id,
Event::End(Tag::Paragraph));
buffer.push_str(&format!("<p>{}</p>", content.trim_right()));
}
fn table_cell(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
fn table_cell(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, true, &mut None,
Event::End(Tag::TableHead) |
@ -284,8 +326,8 @@ pub fn render(w: &mut fmt::Formatter,
buffer.push_str(&format!("<td>{}</td>", content.trim()));
}
fn table_row(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
fn table_row(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle) {
let mut content = String::new();
while let Some(event) = parser.next() {
match event {
@ -303,8 +345,8 @@ pub fn render(w: &mut fmt::Formatter,
buffer.push_str(&format!("<tr>{}</tr>", content));
}
fn table_head(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
fn table_head(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle) {
let mut content = String::new();
while let Some(event) = parser.next() {
match event {
@ -322,7 +364,7 @@ pub fn render(w: &mut fmt::Formatter,
}
}
fn table(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
fn table(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
let mut content = String::new();
let mut rows = String::new();
@ -347,16 +389,16 @@ pub fn render(w: &mut fmt::Formatter,
}));
}
fn blockquote(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
fn blockquote(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, true, &mut None,
Event::End(Tag::BlockQuote));
buffer.push_str(&format!("<blockquote>{}</blockquote>", content.trim_right()));
}
fn list_item(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
fn list_item(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle) {
let mut content = String::new();
while let Some(event) = parser.next() {
match event {
@ -372,7 +414,7 @@ pub fn render(w: &mut fmt::Formatter,
buffer.push_str(&format!("<li>{}</li>", content));
}
fn list(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
fn list(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle) {
let mut content = String::new();
while let Some(event) = parser.next() {
@ -389,15 +431,16 @@ pub fn render(w: &mut fmt::Formatter,
buffer.push_str(&format!("<ul>{}</ul>", content));
}
fn emphasis(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, id: &mut Option<&mut String>) {
fn emphasis(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle,
id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, false, id,
Event::End(Tag::Emphasis));
buffer.push_str(&format!("<em>{}</em>", content));
}
fn strong(parser: &mut Parser, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
fn strong(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, false, id,
@ -405,7 +448,23 @@ pub fn render(w: &mut fmt::Formatter,
buffer.push_str(&format!("<strong>{}</strong>", content));
}
fn looper<'a>(parser: &'a mut Parser, buffer: &mut String, next_event: Option<Event<'a>>,
fn footnote(parser: &mut ParserWrapper, buffer: &mut String,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle,
mut definition: String, id: &mut Option<&mut String>) {
event_loop_break!(parser, toc_builder, shorter, definition, true, id,
Event::End(Tag::FootnoteDefinition(_)));
buffer.push_str(&definition);
}
fn rule(parser: &mut ParserWrapper, buffer: &mut String, toc_builder: &mut Option<TocBuilder>,
shorter: MarkdownOutputStyle, id: &mut Option<&mut String>) {
let mut content = String::new();
event_loop_break!(parser, toc_builder, shorter, content, true, id,
Event::End(Tag::Rule));
buffer.push_str("<hr>");
}
fn looper<'a>(parser: &'a mut ParserWrapper, buffer: &mut String, next_event: Option<Event<'a>>,
toc_builder: &mut Option<TocBuilder>, shorter: MarkdownOutputStyle,
id: &mut Option<&mut String>) -> bool {
if let Some(event) = next_event {
@ -423,7 +482,10 @@ pub fn render(w: &mut fmt::Formatter,
paragraph(parser, buffer, toc_builder, shorter, id);
}
Event::Start(Tag::Link(ref url, ref t)) => {
link(parser, buffer, toc_builder, shorter, url, t.as_ref().to_owned(), id);
link(parser, buffer, toc_builder, shorter, url, t.as_ref(), id);
}
Event::Start(Tag::Image(ref url, ref t)) => {
image(parser, buffer, toc_builder, shorter, url, t.as_ref().to_owned(), id);
}
Event::Start(Tag::Table(_)) => {
table(parser, buffer, toc_builder, shorter);
@ -440,6 +502,23 @@ pub fn render(w: &mut fmt::Formatter,
Event::Start(Tag::Strong) => {
strong(parser, buffer, toc_builder, shorter, id);
}
Event::Start(Tag::Rule) => {
rule(parser, buffer, toc_builder, shorter, id);
}
Event::Start(Tag::FootnoteDefinition(ref def)) => {
let mut content = String::new();
footnote(parser, &mut content, toc_builder, shorter, def.as_ref().to_owned(),
id);
let cur_len = parser.footnotes.len() + 1;
parser.footnotes.push(format!("<li id=\"ref{}\">{}<a href=\"#supref{0}\" \
rev=\"footnote\">↩</a></li>",
cur_len, content));
}
Event::FootnoteReference(_) => {
buffer.push_str(&format!("<sup id=\"supref{0}\"><a href=\"#ref{0}\">{0}</a>\
</sup>",
parser.get_next_footnote_id()));
}
Event::Html(h) | Event::InlineHtml(h) => {
buffer.push_str(&*h);
}
@ -457,13 +536,17 @@ pub fn render(w: &mut fmt::Formatter,
None
};
let mut buffer = String::new();
let mut parser = Parser::new_ext(s, pulldown_cmark::OPTION_ENABLE_TABLES);
let mut parser = ParserWrapper::new(s);
loop {
let next_event = parser.next();
if !looper(&mut parser, &mut buffer, next_event, &mut toc_builder, shorter, &mut None) {
break
}
}
if !parser.footnotes.is_empty() {
buffer.push_str(&format!("<div class=\"footnotes\"><hr><ol>{}</ol></div>",
parser.footnotes.join("")));
}
let mut ret = toc_builder.map_or(Ok(()), |builder| {
write!(w, "<nav id=\"TOC\">{}</nav>", builder.into_toc())
});