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| -rwxr-xr-x | util/deflate | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/util/deflate b/util/deflate new file mode 100755 index 0000000..925779f --- /dev/null +++ b/util/deflate @@ -0,0 +1,64 @@ +#!/usr/bin/env python3 +# vim:tabstop=4 softtabstop=4 shiftwidth=4 textwidth=160 smarttab expandtab colorcolumn=160 + +"""deflate - compression utility for zlib-deflate-nostdlib + +deflate compresses the input file (or, if the argument is not a filename, the input string) using zlib +and outputs the compressed data in a format suitable for C/C++ files. +""" + +import argparse +import sys +import zlib + + +def main(): + parser = argparse.ArgumentParser( + formatter_class=argparse.RawDescriptionHelpFormatter, description=__doc__ + ) + parser.add_argument( + "--variable-name", + type=str, + default="inflate_input", + help="variable name for compressed data", + ) + parser.add_argument( + "--data-type", + type=str, + default="unsigned char const", + help="variable type for compressed data", + ) + parser.add_argument( + "--size-type", + type=str, + default="unsigned short const", + help="variable type for compressed data size", + ) + parser.add_argument("--level", type=int, default=-1, help="zlib compression level") + parser.add_argument( + "file_or_string", type=str, help="filename or string to compress" + ) + args = parser.parse_args() + + try: + with open(args.file_or_string, "rb") as f: + input_data = f.read() + except FileNotFoundError: + input_data = args.file_or_string.encode("utf-8") + + output = zlib.compress(input_data, args.level) + + fdict = output[1] & 0x20 + assert fdict == 0 + + print(f"// {args.file_or_string}") + print(f"{args.size_type} {args.variable_name}_size = {len(output)};") + print( + f"{args.data_type} {args.variable_name}[] = {{" + + ", ".join(map(str, output)) + + "};" + ) + + +if __name__ == "__main__": + main() |