1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 use std::default::Default;
13 use std::io::prelude::*;
14 use std::path::PathBuf;
15 use std::cell::RefCell;
19 use syntax::source_map::DUMMY_SP;
20 use syntax::feature_gate::UnstableFeatures;
22 use externalfiles::{LoadStringError, load_string};
24 use config::{Options, RenderOptions};
25 use html::escape::Escape;
27 use html::markdown::{ErrorCodes, IdMap, Markdown, MarkdownWithToc, find_testable_code};
28 use test::{TestOptions, Collector};
30 /// Separate any lines at the start of the file that begin with `# ` or `%`.
31 fn extract_leading_metadata<'a>(s: &'a str) -> (Vec<&'a str>, &'a str) {
32 let mut metadata = Vec::new();
35 for line in s.lines() {
36 if line.starts_with("# ") || line.starts_with("%") {
37 // trim the whitespace after the symbol
38 metadata.push(line[1..].trim_left());
39 count += line.len() + 1;
41 return (metadata, &s[count..]);
45 // if we're here, then all lines were metadata `# ` or `%` lines.
49 /// Render `input` (e.g., "foo.md") into an HTML file in `output`
50 /// (e.g., output = "bar" => "bar/foo.html").
51 pub fn render(input: PathBuf, options: RenderOptions, diag: &errors::Handler) -> isize {
52 let mut output = options.output;
53 output.push(input.file_stem().unwrap());
54 output.set_extension("html");
56 let mut css = String::new();
57 for name in &options.markdown_css {
58 let s = format!("<link rel=\"stylesheet\" type=\"text/css\" href=\"{}\">\n", name);
62 let input_str = match load_string(&input, diag) {
64 Err(LoadStringError::ReadFail) => return 1,
65 Err(LoadStringError::BadUtf8) => return 2,
67 let playground_url = options.markdown_playground_url
68 .or(options.playground_url);
69 if let Some(playground) = playground_url {
70 markdown::PLAYGROUND.with(|s| { *s.borrow_mut() = Some((None, playground)); });
73 let mut out = match File::create(&output) {
75 diag.struct_err(&format!("{}: {}", output.display(), e)).emit();
81 let (metadata, text) = extract_leading_metadata(&input_str);
82 if metadata.is_empty() {
83 diag.struct_err("invalid markdown file: no initial lines starting with `# ` or `%`").emit();
86 let title = metadata[0];
88 let mut ids = IdMap::new();
89 let error_codes = ErrorCodes::from(UnstableFeatures::from_environment().is_nightly_build());
90 let text = if !options.markdown_no_toc {
91 MarkdownWithToc(text, RefCell::new(&mut ids), error_codes).to_string()
93 Markdown(text, &[], RefCell::new(&mut ids), error_codes).to_string()
101 <meta charset="utf-8">
102 <meta name="viewport" content="width=device-width, initial-scale=1.0">
103 <meta name="generator" content="rustdoc">
104 <title>{title}</title>
109 <body class="rustdoc">
111 <div class="warning">
112 This old browser is unsupported and will most likely display funky
118 <h1 class="title">{title}</h1>
123 title = Escape(title),
125 in_header = options.external_html.in_header,
126 before_content = options.external_html.before_content,
128 after_content = options.external_html.after_content,
133 diag.struct_err(&format!("cannot write to `{}`: {}", output.display(), e)).emit();
140 /// Run any tests/code examples in the markdown file `input`.
141 pub fn test(mut options: Options, diag: &errors::Handler) -> isize {
142 let input_str = match load_string(&options.input, diag) {
144 Err(LoadStringError::ReadFail) => return 1,
145 Err(LoadStringError::BadUtf8) => return 2,
148 let mut opts = TestOptions::default();
149 opts.no_crate_inject = true;
150 opts.display_warnings = options.display_warnings;
151 let mut collector = Collector::new(options.input.display().to_string(), options.cfgs,
152 options.libs, options.codegen_options, options.externs,
153 true, opts, options.maybe_sysroot, None,
155 options.linker, options.edition);
156 collector.set_position(DUMMY_SP);
157 let codes = ErrorCodes::from(UnstableFeatures::from_environment().is_nightly_build());
158 let res = find_testable_code(&input_str, &mut collector, codes);
159 if let Err(err) = res {
160 diag.span_warn(DUMMY_SP, &err.to_string());
162 options.test_args.insert(0, "rustdoctest".to_string());
163 testing::test_main(&options.test_args, collector.tests,
164 testing::Options::new().display_output(options.display_warnings));