docopt / Docopt.c
Licence: mit
C-code generator for docopt language.
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C-code generator for docopt language
Note, at this point the code generator handles only options (positional arguments, commands and pattern matching will follow).
Step 1. Describe your CLI in docopt language
Naval Fate.
Usage:
naval_fate.py ship create <name>...
naval_fate.py ship <name> move <x> <y> [--speed=<kn>]
naval_fate.py ship shoot <x> <y>
naval_fate.py mine (set|remove) <x> <y> [--moored|--drifting]
naval_fate.py --help
naval_fate.py --version
Options:
-h --help Show this screen.
--version Show version.
--speed=<kn> Speed in knots [default: 10].
--moored Moored (anchored) mine.
--drifting Drifting mine.
Step 2. Generate the C code
$ python docopt_c.py -o docopt.c example.docopt
or by using pipe
$ cat example.docopt | python docopt_c.py > docopt.c
docopt.c
into your program
Step 3. Include the generated #include "docopt.c"
int main(int argc, char *argv[])
{
DocoptArgs args = docopt(argc, argv, /* help */ 1, /* version */ "2.0rc2");
printf("Commands\n");
printf(" mine == %s\n", args.mine ? "true" : "false");
printf(" move == %s\n", args.move ? "true" : "false");
printf(" create == %s\n", args.create ? "true" : "false");
printf(" remove == %s\n", args.remove ? "true" : "false");
printf(" set == %s\n", args.set ? "true" : "false");
printf(" ship == %s\n", args.ship ? "true" : "false");
printf(" shoot == %s\n", args.shoot ? "true" : "false");
printf("Arguments\n");
printf(" x == %s\n", args.x);
printf(" y == %s\n", args.y);
printf("Flags\n");
printf(" --drifting == %s\n", args.drifting ? "true" : "false");
printf(" --help == %s\n", args.help ? "true" : "false");
printf(" --moored == %s\n", args.moored ? "true" : "false");
printf(" --version == %s\n", args.version ? "true" : "false");
printf("Options\n");
printf(" --speed == %s\n", args.speed);
return 0;
}
Step 4. Profit!
$ c99 example.c -o example.out
$ ./example.out mine --drifting --speed=20
Commands
mine == true
move == false
create == false
remove == false
set == false
ship == false
shoot == false
Arguments
x == (null)
y == (null)
Flags
--drifting == true
--help == false
--moored == false
--version == false
Options
--speed == 20
Development
See the Python version's page for more info on developing.
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