Make [mz_zip.c] more modular

[karimhm]

In mz_zip.c the library check for both, HAVE_ZLIB and HAVE_LIBCOMP flags and then uses the Zlib interface even though on Apple platforms it might use the Libcomp interface that is "Catfishing" Zlib.

https://github.com/nmoinvaz/minizip/blob/b39f7a0e896615833a5af9dc7134563917a3a227/mz_zip.c#L1885-L1888

Wouldn't something like be better?

#if defined(HAVE_ZLIB)
    else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_DEFLATE)
        mz_stream_zlib_create(&zip->compress_stream);
#endif
#if defined(HAVE_LIBCOMP)
    else if (zip->file_info.compression_method == MZ_COMPRESS_METHOD_DEFLATE)
        mz_stream_libcomp_create(&zip->compress_stream);
#endif

[karimhm]

When trying to compile the library on Apple platform mz_strm_zlib.[h/c] and mz_strm_libcomp.[h/c] cannot coexist due to duplicated symbols issue.

[nmoinvaz]

Are you using CMake to generate xcode project? It should prevent this type of scenario.

[karimhm]

No I'm using Swift Package Manager. I manually copied source files.

[SilenceWater]

Making the project private with CocoapoDS won't unzip