use htmd instead of html2md

Cargo.lock

@@ -88,18 +88,6 @@ version = "2.8.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8f68f53c83ab957f72c32642f3868eec03eb974d1fb82e453128456482613d36"
 
-[[package]]
-name = "bytes"
-version = "1.10.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "f61dac84819c6588b558454b194026eb1f09c293b9036ae9b159e74e73ab6cf9"
-
-[[package]]
-name = "cesu8"
-version = "1.1.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d43a04d8753f35258c91f8ec639f792891f748a1edbd759cf1dcea3382ad83c"
-
 [[package]]
 name = "cfg-if"
 version = "1.0.0"
@@ -152,16 +140,6 @@ version = "1.0.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "5b63caa9aa9397e2d9480a9b13673856c78d8ac123288526c37d7839f2a86990"
 
-[[package]]
-name = "combine"
-version = "4.6.7"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ba5a308b75df32fe02788e748662718f03fde005016435c444eea572398219fd"
-dependencies = [
- "bytes",
- "memchr",
-]
-
 [[package]]
 name = "crc32fast"
 version = "1.4.2"
@@ -214,11 +192,11 @@ dependencies = [
 
 [[package]]
 name = "epub2mdbook"
-version = "0.7.0"
+version = "0.8.0"
 dependencies = [
  "clap",
  "epub",
- "html2md",
+ "htmd",
  "regex",
  "thiserror 2.0.11",
 ]
@@ -262,17 +240,13 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2304e00983f87ffb38b55b444b5e3b60a884b5d30c0fca7d82fe33449bbe55ea"
 
 [[package]]
-name = "html2md"
+name = "htmd"
-version = "0.2.15"
+version = "0.1.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8cff9891f2e0d9048927fbdfc28b11bf378f6a93c7ba70b23d0fbee9af6071b4"
+checksum = "ad1642def6e8e4dc182941f35454f7d2af917787f91f3f5133300030b41006d0"
 dependencies = [
  "html5ever",
- "jni",
- "lazy_static",
  "markup5ever_rcdom",
- "percent-encoding",
- "regex",
 ]
 
 [[package]]
@@ -305,32 +279,6 @@ version = "1.70.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7943c866cc5cd64cbc25b2e01621d07fa8eb2a1a23160ee81ce38704e97b8ecf"
 
-[[package]]
-name = "jni"
-version = "0.19.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c6df18c2e3db7e453d3c6ac5b3e9d5182664d28788126d39b91f2d1e22b017ec"
-dependencies = [
- "cesu8",
- "combine",
- "jni-sys",
- "log",
- "thiserror 1.0.69",
- "walkdir",
-]
-
-[[package]]
-name = "jni-sys"
-version = "0.3.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "8eaf4bc02d17cbdd7ff4c7438cafcdf7fb9a4613313ad11b4f8fefe7d3fa0130"
-
-[[package]]
-name = "lazy_static"
-version = "1.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bbd2bcb4c963f2ddae06a2efc7e9f3591312473c50c6685e1f298068316e66fe"
-
 [[package]]
 name = "libc"
 version = "0.2.169"
@@ -586,15 +534,6 @@ version = "0.8.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2b15c43186be67a4fd63bee50d0303afffcef381492ebe2c5d87f324e1b8815c"
 
-[[package]]
-name = "same-file"
-version = "1.0.6"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "93fc1dc3aaa9bfed95e02e6eadabb4baf7e3078b0bd1b4d7b6b0b68378900502"
-dependencies = [
- "winapi-util",
-]
-
 [[package]]
 name = "scopeguard"
 version = "1.2.0"
@@ -761,25 +700,6 @@ version = "0.2.2"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "06abde3611657adf66d383f00b093d7faecc7fa57071cce2578660c9f1010821"
 
-[[package]]
-name = "walkdir"
-version = "2.5.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "29790946404f91d9c5d06f9874efddea1dc06c5efe94541a7d6863108e3a5e4b"
-dependencies = [
- "same-file",
- "winapi-util",
-]
-
-[[package]]
-name = "winapi-util"
-version = "0.1.9"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf221c93e13a30d793f7645a0e7762c55d169dbb0a49671918a2319d289b10bb"
-dependencies = [
- "windows-sys",
-]
-
 [[package]]
 name = "windows-sys"
 version = "0.59.0"

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "epub2mdbook"
-version = "0.7.0"
+version = "0.8.0"
 edition = "2024"
 description = "A tool to convert EPUB files to MDBook format"
 authors = ["Maverick Liu <maverick.liu42@gmail.com>"]
@@ -12,6 +12,6 @@ categories = ["command-line-utilities", "text-processing"]
 [dependencies]
 clap = { version = "4.5.30", features = ["derive"] }
 epub = "2.1.1"
-html2md = "0.2.15"
+htmd = "0.1.6"
 regex = "1.11.1"
 thiserror = "2.0.11"

src/lib.rs

@@ -115,32 +115,29 @@ fn extract_chapters_and_resources<R: Read + Seek>(
     let output_dir = output_dir.as_ref();
     let src_dir = output_dir.join("src");
     for (_, (path, _)) in doc.resources.clone().into_iter() {
-        let content = match doc.get_resource_by_path(&path) {
+        let mut content = match doc.get_resource_by_path(&path) {
             Some(content) => content,
             None => continue, // unreachable
         };
-        if let Some(md_path) = html_to_md.get(&path) {
+        let target_path = if let Some(md_path) = html_to_md.get(&path) {
             // html file, convert to md
-            let target_path = if md_path == Path::new("SUMMARY.md") {
+            let html = String::from_utf8(content.clone())?;
+            let markdown = htmd::convert(&html)?;
+            content = post_process_md(&markdown, &file_name_map).into_bytes();
+            if md_path == Path::new("SUMMARY.md") {
                 src_dir.join("_SUMMARY.md")
             } else {
                 src_dir.join(md_path)
-            };
-            if let Some(parent) = target_path.parent() {
-                fs::create_dir_all(parent)?;
             }
-            let html = String::from_utf8(content)?;
-            let markdown = html2md::parse_html(&html);
-            let markdown = post_process_md(&markdown, &file_name_map);
-            fs::write(target_path, markdown)?;
         } else {
             // other file, just copy
-            let target_path = src_dir.join(&path);
+            src_dir.join(&path)
-            if let Some(parent) = target_path.parent() {
+        };
-                fs::create_dir_all(parent)?;
+        // write to target path
-            }
+        if let Some(parent) = target_path.parent() {
-            fs::write(target_path, content)?;
+            fs::create_dir_all(parent)?;
         }
+        fs::write(target_path, content)?;
     }
     Ok(())
 }
@@ -150,39 +147,39 @@ fn extract_chapters_and_resources<R: Read + Seek>(
 /// [ABC]({abc.html}#xxx)
 /// [ABC]({abc.html})
 /// ```
-static LINK: LazyLock<Regex> =
+static LINK: LazyLock<Regex> = LazyLock::new(|| {
-    LazyLock::new(|| Regex::new(r#"\[[^\]]+\]\(([^#)]+)(?:#[^)]+)?\)"#).expect("unreachable"));
+    Regex::new(r#"\[[^\]]+\]\(?P<link>([^#)]+)(?:#[^)]+)?\)"#).expect("unreachable")
-static EMPTY_LINK: LazyLock<Regex> =
+});
-    LazyLock::new(|| Regex::new(r#"\[([^\]]+)\]\(\)"#).expect("unreachable"));
+/// Match the URL link, eg:
+/// ```
+/// https://www.example.com\
+/// ```
 static URL_LINK: LazyLock<Regex> =
     LazyLock::new(|| Regex::new(r"^[a-z][a-z0-9+.-]*:").expect("unreachable"));
-fn post_process_md(markdown: &str, file_name_map: &HashMap<&OsStr, &OsStr>) -> String {
-    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];
-            // Don't modify links with schemes like `https`.
-            if URL_LINK.is_match(link) {
-                return origin.to_string();
-            }
-            let html_file_name = match Path::new(&link).file_name() {
-                Some(link) => link,
-                None => return origin.to_string(),
-            };
-            if let Some(md_file_name) = file_name_map.get(html_file_name) {
-                origin.replace(
-                    &html_file_name.to_string_lossy().to_string(),
-                    &md_file_name.to_string_lossy(),
-                )
-            } else {
-                origin.to_string()
-            }
-        })
-        .replace(r"![]()", "")
-        .replace(r"[]()", "");
 
-    EMPTY_LINK.replace_all(&markdown, "$1").to_string()
+fn post_process_md(markdown: &str, file_name_map: &HashMap<&OsStr, &OsStr>) -> String {
+    LINK.replace_all(markdown, |caps: &Captures| {
+        // replace [ABC](abc.html#xxx) to [ABC](abc.md#xxx)
+        let origin = &caps[0];
+        let link = &caps["link"];
+        // Don't modify links with schemes like `https`.
+        if URL_LINK.is_match(link) {
+            return origin.to_string();
+        }
+        let html_file_name = match Path::new(&link).file_name() {
+            Some(link) => link,
+            None => return origin.to_string(),
+        };
+        if let Some(md_file_name) = file_name_map.get(html_file_name) {
+            origin.replace(
+                &*html_file_name.to_string_lossy(),
+                &md_file_name.to_string_lossy(),
+            )
+        } else {
+            origin.to_string()
+        }
+    })
+    .to_string()
 }
 
 fn write_book_toml(

src/main.rs

@@ -18,4 +18,4 @@ fn main() -> Result<(), Error> {
     convert_epub_to_mdbook(args.input_epub, args.output_dir)?;
     println!("Conversion completed successfully!");
     Ok(())
-}
+}