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use std::collections::HashSet;
use std::{str, io};
use std::string::String;
use getopts;
use testing;
use html::escape::Escape;
use html::markdown;
use html::markdown::{MarkdownWithToc, find_testable_code, reset_headers};
use test::Collector;
fn load_string(input: &Path) -> io::IoResult<Option<String>> {
let mut f = try!(io::File::open(input));
let d = try!(f.read_to_end());
Ok(str::from_utf8(d.as_slice()).map(|s| s.to_string()))
}
macro_rules! load_or_return {
($input: expr, $cant_read: expr, $not_utf8: expr) => {
{
let input = Path::new($input);
match load_string(&input) {
Err(e) => {
let _ = writeln!(&mut io::stderr(),
"error reading `{}`: {}", input.display(), e);
return $cant_read;
}
Ok(None) => {
let _ = writeln!(&mut io::stderr(),
"error reading `{}`: not UTF-8", input.display());
return $not_utf8;
}
Ok(Some(s)) => s
}
}
}
}
fn extract_leading_metadata<'a>(s: &'a str) -> (Vec<&'a str>, &'a str) {
let mut metadata = Vec::new();
for line in s.lines() {
if line.starts_with("%") {metadata.push(line.slice_from(1).trim_left())
} else {
let line_start_byte = s.subslice_offset(line);
return (metadata, s.slice_from(line_start_byte));
}
}(metadata, "")
}
fn load_external_files(names: &[String]) -> Option<String> {
let mut out = String::new();
for name in names.iter() {
out.push_str(load_or_return!(name.as_slice(), None, None).as_slice());
out.push_char('\n');
}
Some(out)
}
pub fn render(input: &str, mut output: Path, matches: &getopts::Matches) -> int {
let input_p = Path::new(input);
output.push(input_p.filestem().unwrap());
output.set_extension("html");
let mut css = String::new();
for name in matches.opt_strs("markdown-css").iter() {
let s = format!("<link rel=\"stylesheet\" type=\"text/css\" href=\"{}\">\n", name);
css.push_str(s.as_slice())
}
let input_str = load_or_return!(input, 1, 2);
let playground = matches.opt_str("markdown-playground-url");
if playground.is_some() {
markdown::playground_krate.replace(Some(None));
}
let playground = playground.unwrap_or("".to_string());
let (in_header, before_content, after_content) =
match (load_external_files(matches.opt_strs("markdown-in-header")
.as_slice()),
load_external_files(matches.opt_strs("markdown-before-content")
.as_slice()),
load_external_files(matches.opt_strs("markdown-after-content")
.as_slice())) {
(Some(a), Some(b), Some(c)) => (a,b,c),
_ => return 3
};
let mut out = match io::File::create(&output) {
Err(e) => {
let _ = writeln!(&mut io::stderr(),
"error opening `{}` for writing: {}",
output.display(), e);
return 4;
}
Ok(f) => f
};
let (metadata, text) = extract_leading_metadata(input_str.as_slice());
if metadata.len() == 0 {
let _ = writeln!(&mut io::stderr(),
"invalid markdown file: expecting initial line with `% ...TITLE...`");
return 5;
}
let title = metadata.get(0).as_slice();
reset_headers();
let err = write!(
&mut out,
r#"<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<meta name="generator" content="rustdoc">
<title>{title}</title>
{css}
{in_header}
</head>
<body>
<!--[if lte IE 8]>
<div class="warning">
This old browser is unsupported and will most likely display funky
things.
</div>
<![endif]-->
{before_content}
<h1 class="title">{title}</h1>
{text}
<script type="text/javascript">
window.playgroundUrl = "{playground}";
</script>
{after_content}
</body>
</html>"#,
title = Escape(title),
css = css,
in_header = in_header,
before_content = before_content,
text = MarkdownWithToc(text),
after_content = after_content,
playground = playground,
);
match err {
Err(e) => {
let _ = writeln!(&mut io::stderr(),
"error writing to `{}`: {}",
output.display(), e);
6
}
Ok(_) => 0
}
}
pub fn test(input: &str, libs: HashSet<Path>, mut test_args: Vec<String>) -> int {
let input_str = load_or_return!(input, 1, 2);
let mut collector = Collector::new(input.to_string(), libs, true);
find_testable_code(input_str.as_slice(), &mut collector);
test_args.unshift("rustdoctest".to_string());
testing::test_main(test_args.as_slice(), collector.tests);
0
}