Converts RPG Maker's xyz image format to and from gifs.
zlib and giflib. These should be available in your distro's package manager.
GNU Make: make or make debug, optionally make install
CMake: CMake files are provided for users that prefer to use it. As always, it's recommended to do an out-of-source build with CMake to avoid cluttering the source tree.
Usage: bin/xyz123 FILE... [-g] [-o FILE]
-h, --help display this text
-o, --output FILE write to FILE
-g, --gif force inputs to be treated as gifs
-s, --silent don't print output filenames
FILE may be '-' to specify stdin/stdout.
If an output path isn't specified, each input will
adopt an output path with the appropriate extension.
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Add "--" handling to args.
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Hardcode "--" prefixes for long switches.
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Fix list_unlink.
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Write and rewrite some comments
The name "xyz123" pokes fun at the genericness of the name of the format it works with. Mind you, I probably couldn't come up with anything better.