module zlib #flag -I @VEXEROOT/thirdparty/zip #include "miniz.h" pub const max_size = u64(1 << 31) fn C.tdefl_compress_mem_to_heap(source_buf voidptr, source_buf_len usize, out_len &usize, flags int) voidptr fn C.tinfl_decompress_mem_to_heap(source_buf voidptr, source_buf_len usize, out_len &usize, flags int) voidptr // compresses an array of bytes using zlib and returns the compressed bytes in a new array // Example: compressed := zlib.compress(b) ? [manualfree] pub fn compress(data []u8) ?[]u8 { if u64(data.len) > zlib.max_size { return error('data too large ($data.len > $zlib.max_size)') } mut out_len := usize(0) // flags = TDEFL_WRITE_ZLIB_HEADER (0x01000) address := C.tdefl_compress_mem_to_heap(data.data, data.len, &out_len, 0x01000) if address == 0 { return error('compression failed') } if u64(out_len) > zlib.max_size { return error('compressed data is too large ($out_len > $zlib.max_size)') } compressed := unsafe { address.vbytes(int(out_len)) } copy := compressed.clone() unsafe { free(address) } return copy } // decompresses an array of bytes using zlib and returns the decompressed bytes in a new array // Example: decompressed := zlib.decompress(b) ? [manualfree] pub fn decompress(data []u8) ?[]u8 { mut out_len := usize(0) // flags = TINFL_FLAG_PARSE_ZLIB_HEADER (0x1) address := C.tinfl_decompress_mem_to_heap(data.data, data.len, &out_len, 0x1) if address == 0 { return error('decompression failed') } if u64(out_len) > zlib.max_size { return error('decompressed data is too large ($out_len > $zlib.max_size)') } decompressed := unsafe { address.vbytes(int(out_len)) } copy := decompressed.clone() unsafe { free(address) } return copy }