feat(php-shim): implement Phar/PharData and the zlib/bzip2 functions

Adopt the tar, flate2, and bzip2 crates to fill in the phar.rs and
compress.rs todos: PharData tar/zip reading, building, and whole-archive
compression, plus a native .phar reader that follows the php.net
file-format manual and verifies hash-based signatures. Callers now
propagate the constructor/extract errors PHP throws, and fwrite accepts
byte strings so gzread no longer needs lossy UTF-8.

The native .phar writing API stays todo!() (no call sites; Composer's
Compiler is not ported) and OPENSSL phar signatures are accepted
unverified (TODO(phase-c)).

This unblocks Tar::getComposerJson and the tar/phar/gzip downloaders;
tar_test (7), artifact_repository_test (2), and phar_archiver_test zip
(1) are un-ignored. The archive command itself still panics because
ArchiveManager::archive always generates glob excludes whose look-ahead
regexes the regex crate cannot compile; converting those patterns to
regex-compatible ones is a separate, still-undecided work item.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/crates/shirabe/src/downloader/gzip_downloader.rs b/crates/shirabe/src/downloader/gzip_downloader.rs
index 4ea8f3b9..6b5f3872 100644
--- a/crates/shirabe/src/downloader/gzip_downloader.rs
+++ b/crates/shirabe/src/downloader/gzip_downloader.rs
@@ -50,14 +50,15 @@ impl GzipDownloader {
     }
 
     fn extract_using_ext(&self, file: &str, target_filepath: &str) {
-        let archive_file = gzopen(file, "rb");
+        // PHP does not check the gzopen result either; gzread(false, ...) is a fatal TypeError.
+        let archive_file = gzopen(file, "rb").unwrap();
         let target_file = fopen(target_filepath, "wb").unwrap();
         loop {
             let string = gzread(archive_file.clone(), 4096);
             if string.is_empty() {
                 break;
             }
-            fwrite(&target_file, &string, Some(Platform::strlen(&string)));
+            fwrite(&target_file, &string, Some(string.len() as i64));
         }
         gzclose(archive_file);
         fclose(&target_file);