Fix unzipping clangd and codelldb on Windows (#31080)

Closes https://github.com/zed-industries/zed/pull/30454

Release Notes:

- N/A

crates/util/Cargo.toml

@@ -18,6 +18,7 @@ test-support = ["tempfile", "git2", "rand", "util_macros"]
 [dependencies]
 anyhow.workspace = true
 async-fs.workspace = true
+async_zip.workspace = true
 collections.workspace = true
 dirs.workspace = true
 futures-lite.workspace = true
@@ -36,6 +37,7 @@ take-until.workspace = true
 tempfile = { workspace = true, optional = true }
 unicase.workspace = true
 util_macros = { workspace = true, optional = true }
+walkdir.workspace = true
 workspace-hack.workspace = true
 
 [target.'cfg(unix)'.dependencies]

crates/util/src/archive.rs

@@ -0,0 +1,118 @@
+use std::path::Path;
+
+use anyhow::Result;
+use async_zip::base::read::stream::ZipFileReader;
+use futures::{AsyncRead, io::BufReader};
+
+pub async fn extract_zip<R: AsyncRead + Unpin>(destination: &Path, reader: R) -> Result<()> {
+    let mut reader = ZipFileReader::new(BufReader::new(reader));
+
+    let destination = &destination
+        .canonicalize()
+        .unwrap_or_else(|_| destination.to_path_buf());
+
+    while let Some(mut item) = reader.next_with_entry().await? {
+        let entry_reader = item.reader_mut();
+        let entry = entry_reader.entry();
+        let path = destination.join(entry.filename().as_str().unwrap());
+
+        if entry.dir().unwrap() {
+            std::fs::create_dir_all(&path)?;
+        } else {
+            let parent_dir = path.parent().expect("failed to get parent directory");
+            std::fs::create_dir_all(parent_dir)?;
+            let mut file = smol::fs::File::create(&path).await?;
+            futures::io::copy(entry_reader, &mut file).await?;
+        }
+
+        reader = item.skip().await?;
+    }
+
+    Ok(())
+}
+
+#[cfg(test)]
+mod tests {
+    use std::path::PathBuf;
+
+    use async_zip::ZipEntryBuilder;
+    use async_zip::base::write::ZipFileWriter;
+    use futures::AsyncWriteExt;
+    use smol::io::Cursor;
+    use tempfile::TempDir;
+
+    use super::*;
+
+    async fn compress_zip(src_dir: &Path, dst: &Path) -> Result<()> {
+        let mut out = smol::fs::File::create(dst).await?;
+        let mut writer = ZipFileWriter::new(&mut out);
+
+        for entry in walkdir::WalkDir::new(src_dir) {
+            let entry = entry?;
+            let path = entry.path();
+
+            if path.is_dir() {
+                continue;
+            }
+
+            let relative_path = path.strip_prefix(src_dir)?;
+            let data = smol::fs::read(&path).await?;
+
+            let filename = relative_path.display().to_string();
+            let builder = ZipEntryBuilder::new(filename.into(), async_zip::Compression::Deflate);
+
+            writer.write_entry_whole(builder, &data).await?;
+        }
+
+        writer.close().await?;
+        out.flush().await?;
+
+        Ok(())
+    }
+
+    #[track_caller]
+    fn assert_file_content(path: &Path, content: &str) {
+        assert!(path.exists(), "file not found: {:?}", path);
+        let actual = std::fs::read_to_string(path).unwrap();
+        assert_eq!(actual, content);
+    }
+
+    #[track_caller]
+    fn make_test_data() -> TempDir {
+        let dir = tempfile::tempdir().unwrap();
+        let dst = dir.path();
+
+        std::fs::write(dst.join("test"), "Hello world.").unwrap();
+        std::fs::create_dir_all(dst.join("foo/bar")).unwrap();
+        std::fs::write(dst.join("foo/bar.txt"), "Foo bar.").unwrap();
+        std::fs::write(dst.join("foo/dar.md"), "Bar dar.").unwrap();
+        std::fs::write(dst.join("foo/bar/dar你好.txt"), "你好世界").unwrap();
+
+        dir
+    }
+
+    async fn read_archive(path: &PathBuf) -> impl AsyncRead + Unpin {
+        let data = smol::fs::read(&path).await.unwrap();
+        Cursor::new(data)
+    }
+
+    #[test]
+    fn test_extract_zip() {
+        let test_dir = make_test_data();
+        let zip_file = test_dir.path().join("test.zip");
+
+        smol::block_on(async {
+            compress_zip(test_dir.path(), &zip_file).await.unwrap();
+            let reader = read_archive(&zip_file).await;
+
+            let dir = tempfile::tempdir().unwrap();
+            let dst = dir.path();
+            extract_zip(dst, reader).await.unwrap();
+
+            assert_file_content(&dst.join("test"), "Hello world.");
+            assert_file_content(&dst.join("foo/bar.txt"), "Foo bar.");
+            assert_file_content(&dst.join("foo/dar.md"), "Bar dar.");
+            assert_file_content(&dst.join("foo/bar/dar你好.txt"), "你好世界");
+        });
+    }
+}

crates/util/src/util.rs

@@ -1,4 +1,5 @@
 pub mod arc_cow;
+pub mod archive;
 pub mod command;
 pub mod fs;
 pub mod markdown;