standard-mdbooks/epub2mdbook
standard-mdbooks/epub2mdbook
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rm dependence url

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This commit is contained in:
Maverick Liu 2025-02-22 18:29:12 +08:00
parent b8a8b834f6
commit 62a7985873
3 changed files with 16 additions and 304 deletions
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23
src/lib.rs
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@ -123,7 +123,7 @@ fn extract_chapters_and_resources<R: Read + Seek>(
if let Some(parent) = target_path.parent() {
fs::create_dir_all(parent)?;
}
let html = String::from_utf8(content.clone())?;
let html = String::from_utf8(content)?;
let markdown = html2md::parse_html(&html);
let markdown = post_process_md(&markdown, html_to_md);
fs::write(target_path, markdown)?;
@ -144,28 +144,25 @@ fn extract_chapters_and_resources<R: Read + Seek>(
/// [ABC]({abc.html}#xxx)
/// [ABC]({abc.html})
/// ```
static LINK_REGEX: LazyLock<Regex> =
static LINK: LazyLock<Regex> =
LazyLock::new(|| Regex::new(r#"\[[^\]]+\]\(([^#)]+)(?:#[^)]+)?\)"#).expect("unreachable"));
/// Capture the empty links, eg:
/// ```
/// [{ABC}]()
/// ```
static EMPTY_LINK_REGEX: LazyLock<Regex> =
static EMPTY_LINK: LazyLock<Regex> =
LazyLock::new(|| Regex::new(r#"\[([^\]]+)\]\(\)"#).expect("unreachable"));
static URL_LINK: LazyLock<Regex> =
LazyLock::new(|| Regex::new(r"^[a-z][a-z0-9+.-]*:").expect("unreachable"));
fn post_process_md(markdown: &str, html_to_md: &HashMap<PathBuf, PathBuf>) -> String {
let file_name_map = html_to_md
.iter()
.filter_map(|(k, v)| Some((k.file_name()?, v.file_name()?)))
.collect::<HashMap<_, _>>();
let markdown = LINK_REGEX
let markdown = LINK
.replace_all(markdown, |caps: &Captures| {
// replace [ABC](abc.html#xxx) to [ABC](abc.md#xxx)
let origin = &caps[0];
let link = &caps[1];
if url::Url::parse(link).is_ok() {
// Don't modify links with schemes like `https`.
if URL_LINK.is_match(link) {
return origin.to_string();
}
let link = match Path::new(&link).file_name() {
@ -184,7 +181,7 @@ fn post_process_md(markdown: &str, html_to_md: &HashMap<PathBuf, PathBuf>) -> St
.replace(r"![]()", "")
.replace(r"[]()", "");
EMPTY_LINK_REGEX
EMPTY_LINK
.replace_all(&markdown, |caps: &Captures| caps[1].to_string())
.to_string()
}
@ -210,7 +207,7 @@ mod tests {
#[test]
fn test_replace_links() {
let markdown = r"[hello](hello.html#xxx) [hi](hi.xhtml)";
let markdown = LINK_REGEX.replace_all(&markdown, |caps: &Captures| {
let markdown = LINK.replace_all(&markdown, |caps: &Captures| {
let link = caps[1].to_string();
caps[0].replace(&link, "hello.md")
});