Daan De Meyer
f08796065d
Move the push-based streaming compression API from import-compress.c into compress.c and delete import-compress.c/h. This consolidates all compression code in one place and makes all compression libraries (liblzma, liblz4, libzstd, libz, libbz2) runtime-loaded via dlopen instead of directly linked. Introduce opaque Compressor/Decompressor types backed by a heap- allocated struct defined only in compress.c, keeping all third-party library headers out of compress.h. Rewrite the per-codec fd-to-fd stream functions as thin wrappers around the push API via generic compress_stream()/decompress_stream() taking a Compression type parameter. Integrate LZ4 into this framework using the LZ4 Frame API, eliminating all LZ4 special-casing. Extend the Compression enum with COMPRESSION_GZIP and COMPRESSION_BZIP2 and add the corresponding blob, startswith, and stream functions for both. Rename the ImportCompress types and functions: ImportCompressType becomes the existing Compression enum, ImportCompress becomes Compressor (with Decompressor typedef), and all import_compress_*/import_uncompress_* become compressor_*/decompressor_*. Rename dlopen_lzma() to dlopen_xz() for consistency. Make compression_to_string() return lowercase by default. Add INT_MAX/UINT_MAX overflow checks for LZ4, zlib, and bzip2 blob functions where the codec API uses narrower integer types than our uint64_t parameters. Migrate test-compress.c and test-compress-benchmark.c to the TEST() macro framework, new assertion macros, and codec-generic loops instead of per-codec duplication. Co-developed-by: Claude Opus 4.6 <noreply@anthropic.com>
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