1 use crate::html::markdown::{ErrorCodes, IdMap, Markdown, Playground};
2 use crate::syntax::edition::Edition;
4 use rustc_feature::UnstableFeatures;
9 #[derive(Clone, Debug)]
10 pub struct ExternalHtml {
11 /// Content that will be included inline in the <head> section of a
12 /// rendered Markdown file or generated documentation
13 pub in_header: String,
14 /// Content that will be included inline between <body> and the content of
15 /// a rendered Markdown file or generated documentation
16 pub before_content: String,
17 /// Content that will be included inline between the content and </body> of
18 /// a rendered Markdown file or generated documentation
19 pub after_content: String,
25 before_content: &[String],
26 after_content: &[String],
27 md_before_content: &[String],
28 md_after_content: &[String],
29 diag: &errors::Handler,
32 playground: &Option<Playground>,
33 ) -> Option<ExternalHtml> {
34 let codes = ErrorCodes::from(UnstableFeatures::from_environment().is_nightly_build());
35 let ih = load_external_files(in_header, diag)?;
36 let bc = load_external_files(before_content, diag)?;
37 let m_bc = load_external_files(md_before_content, diag)?;
41 Markdown(&m_bc, &[], id_map, codes, edition, playground).to_string()
43 let ac = load_external_files(after_content, diag)?;
44 let m_ac = load_external_files(md_after_content, diag)?;
48 Markdown(&m_ac, &[], id_map, codes, edition, playground).to_string()
50 Some(ExternalHtml { in_header: ih, before_content: bc, after_content: ac })
54 pub enum LoadStringError {
59 pub fn load_string<P: AsRef<Path>>(
61 diag: &errors::Handler,
62 ) -> Result<String, LoadStringError> {
63 let file_path = file_path.as_ref();
64 let contents = match fs::read(file_path) {
67 diag.struct_err(&format!("error reading `{}`: {}", file_path.display(), e)).emit();
68 return Err(LoadStringError::ReadFail);
71 match str::from_utf8(&contents) {
72 Ok(s) => Ok(s.to_string()),
74 diag.struct_err(&format!("error reading `{}`: not UTF-8", file_path.display())).emit();
75 Err(LoadStringError::BadUtf8)
80 fn load_external_files(names: &[String], diag: &errors::Handler) -> Option<String> {
81 let mut out = String::new();
83 let s = match load_string(name, diag) {
85 Err(_) => return None,