145 lines
4.6 KiB
Rust
145 lines
4.6 KiB
Rust
use std::fs::{create_dir_all, read_to_string, File};
|
|
use std::io::prelude::*;
|
|
use std::path::Path;
|
|
|
|
use rustc_span::edition::Edition;
|
|
use rustc_span::source_map::DUMMY_SP;
|
|
|
|
use crate::config::{Options, RenderOptions};
|
|
use crate::doctest::{Collector, TestOptions};
|
|
use crate::html::escape::Escape;
|
|
use crate::html::markdown;
|
|
use crate::html::markdown::{find_testable_code, ErrorCodes, IdMap, Markdown, MarkdownWithToc};
|
|
|
|
/// Separate any lines at the start of the file that begin with `# ` or `%`.
|
|
fn extract_leading_metadata(s: &str) -> (Vec<&str>, &str) {
|
|
let mut metadata = Vec::new();
|
|
let mut count = 0;
|
|
|
|
for line in s.lines() {
|
|
if line.starts_with("# ") || line.starts_with('%') {
|
|
// trim the whitespace after the symbol
|
|
metadata.push(line[1..].trim_start());
|
|
count += line.len() + 1;
|
|
} else {
|
|
return (metadata, &s[count..]);
|
|
}
|
|
}
|
|
|
|
// if we're here, then all lines were metadata `# ` or `%` lines.
|
|
(metadata, "")
|
|
}
|
|
|
|
/// Render `input` (e.g., "foo.md") into an HTML file in `output`
|
|
/// (e.g., output = "bar" => "bar/foo.html").
|
|
crate fn render<P: AsRef<Path>>(
|
|
input: P,
|
|
options: RenderOptions,
|
|
edition: Edition,
|
|
) -> Result<(), String> {
|
|
if let Err(e) = create_dir_all(&options.output) {
|
|
return Err(format!("{}: {}", options.output.display(), e));
|
|
}
|
|
|
|
let input = input.as_ref();
|
|
let mut output = options.output;
|
|
output.push(input.file_name().unwrap());
|
|
output.set_extension("html");
|
|
|
|
let mut css = String::new();
|
|
for name in &options.markdown_css {
|
|
let s = format!("<link rel=\"stylesheet\" type=\"text/css\" href=\"{}\">\n", name);
|
|
css.push_str(&s)
|
|
}
|
|
|
|
let input_str = read_to_string(input).map_err(|err| format!("{}: {}", input.display(), err))?;
|
|
let playground_url = options.markdown_playground_url.or(options.playground_url);
|
|
let playground = playground_url.map(|url| markdown::Playground { crate_name: None, url });
|
|
|
|
let mut out = File::create(&output).map_err(|e| format!("{}: {}", output.display(), e))?;
|
|
|
|
let (metadata, text) = extract_leading_metadata(&input_str);
|
|
if metadata.is_empty() {
|
|
return Err("invalid markdown file: no initial lines starting with `# ` or `%`".to_owned());
|
|
}
|
|
let title = metadata[0];
|
|
|
|
let mut ids = IdMap::new();
|
|
let error_codes = ErrorCodes::from(options.unstable_features.is_nightly_build());
|
|
let text = if !options.markdown_no_toc {
|
|
MarkdownWithToc(text, &mut ids, error_codes, edition, &playground).into_string()
|
|
} else {
|
|
Markdown(text, &[], &mut ids, error_codes, edition, &playground).into_string()
|
|
};
|
|
|
|
let err = write!(
|
|
&mut out,
|
|
r#"<!DOCTYPE html>
|
|
<html lang="en">
|
|
<head>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width, initial-scale=1.0">
|
|
<meta name="generator" content="rustdoc">
|
|
<title>{title}</title>
|
|
|
|
{css}
|
|
{in_header}
|
|
</head>
|
|
<body class="rustdoc">
|
|
<!--[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}
|
|
{after_content}
|
|
</body>
|
|
</html>"#,
|
|
title = Escape(title),
|
|
css = css,
|
|
in_header = options.external_html.in_header,
|
|
before_content = options.external_html.before_content,
|
|
text = text,
|
|
after_content = options.external_html.after_content,
|
|
);
|
|
|
|
match err {
|
|
Err(e) => Err(format!("cannot write to `{}`: {}", output.display(), e)),
|
|
Ok(_) => Ok(()),
|
|
}
|
|
}
|
|
|
|
/// Runs any tests/code examples in the markdown file `input`.
|
|
crate fn test(mut options: Options) -> Result<(), String> {
|
|
let input_str = read_to_string(&options.input)
|
|
.map_err(|err| format!("{}: {}", options.input.display(), err))?;
|
|
let mut opts = TestOptions::default();
|
|
opts.no_crate_inject = true;
|
|
opts.display_warnings = options.display_warnings;
|
|
let mut collector = Collector::new(
|
|
options.input.display().to_string(),
|
|
options.clone(),
|
|
true,
|
|
opts,
|
|
None,
|
|
Some(options.input),
|
|
options.enable_per_target_ignores,
|
|
);
|
|
collector.set_position(DUMMY_SP);
|
|
let codes = ErrorCodes::from(options.render_options.unstable_features.is_nightly_build());
|
|
|
|
find_testable_code(&input_str, &mut collector, codes, options.enable_per_target_ignores, None);
|
|
|
|
options.test_args.insert(0, "rustdoctest".to_string());
|
|
testing::test_main(
|
|
&options.test_args,
|
|
collector.tests,
|
|
Some(testing::Options::new().display_output(options.display_warnings)),
|
|
);
|
|
Ok(())
|
|
}
|