1 files changed, 70 insertions, 0 deletions
diff --git a/crates/shirabe/src/downloader/gzip_downloader.rs b/crates/shirabe/src/downloader/gzip_downloader.rs
index bb976da..2158126 100644
--- a/crates/shirabe/src/downloader/gzip_downloader.rs
+++ b/crates/shirabe/src/downloader/gzip_downloader.rs
@@ -1 +1,71 @@
 //! ref: composer/src/Composer/Downloader/GzipDownloader.php
+
+use anyhow::Result;
+use shirabe_external_packages::react::promise::promise_interface::PromiseInterface;
+use shirabe_php_shim::{
+    RuntimeException,
+    extension_loaded, fclose, fopen, fwrite, gzclose, gzopen, gzread,
+    implode, parse_url, pathinfo, strtr,
+    DIRECTORY_SEPARATOR, PATHINFO_FILENAME, PHP_URL_PATH,
+};
+use crate::downloader::archive_downloader::ArchiveDownloader;
+use crate::package::package_interface::PackageInterface;
+use crate::util::platform::Platform;
+
+pub struct GzipDownloader {
+    inner: ArchiveDownloader,
+}
+
+impl GzipDownloader {
+    pub(crate) fn extract(&self, package: &dyn PackageInterface, file: &str, path: &str) -> Result<Box<dyn PromiseInterface>> {
+        let filename = pathinfo(
+            parse_url(&strtr(&package.get_dist_url().unwrap_or_default(), "\\", "/"), PHP_URL_PATH),
+            PATHINFO_FILENAME,
+        );
+        let target_filepath = format!("{}{}{}", path, DIRECTORY_SEPARATOR, filename);
+
+        if !Platform::is_windows() {
+            let command = vec![
+                "sh".to_string(),
+                "-c".to_string(),
+                "gzip -cd -- \"$0\" > \"$1\"".to_string(),
+                file.to_string(),
+                target_filepath.clone(),
+            ];
+
+            if self.inner.process.execute(&command, &mut String::new()) == 0 {
+                return Ok(shirabe_external_packages::react::promise::resolve(None));
+            }
+
+            if extension_loaded("zlib") {
+                self.extract_using_ext(file, &target_filepath);
+                return Ok(shirabe_external_packages::react::promise::resolve(None));
+            }
+
+            let process_error = format!(
+                "Failed to execute {}\n\n{}",
+                implode(" ", &command),
+                self.inner.process.get_error_output(),
+            );
+            return Err(anyhow::anyhow!(RuntimeException { message: process_error, code: 0 }));
+        }
+
+        self.extract_using_ext(file, &target_filepath);
+
+        Ok(shirabe_external_packages::react::promise::resolve(None))
+    }
+
+    fn extract_using_ext(&self, file: &str, target_filepath: &str) {
+        let archive_file = gzopen(file, "rb");
+        let target_file = fopen(target_filepath, "wb");
+        loop {
+            let string = gzread(archive_file.clone(), 4096);
+            if string.is_empty() {
+                break;
+            }
+            fwrite(target_file.clone(), &string, Platform::strlen(&string));
+        }
+        gzclose(archive_file);
+        fclose(target_file);
+    }
+}