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81 lines
2.7 KiB
C
81 lines
2.7 KiB
C
/*
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* arg.h
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* Arg parsing.
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*
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* Copyright (c) 2016
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* Christoph Lohmann <20h at r-36 dot net>
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*
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* This file is licensed under the MIT License.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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* FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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* DEALINGS IN THE SOFTWARE.
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*/
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/*
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* Copy me if you can.
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* by 20h
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*/
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#pragma once
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#ifndef COSMOPOLITAN
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#include <stdlib.h>
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#include <stddef.h>
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#endif
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extern char *argv0;
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/* use main(int argc, char *argv[]) */
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#define ARGBEGIN for (argv0 = *argv, argv++, argc--;\
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argv[0] && argv[0][0] == '-'\
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&& argv[0][1];\
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argc--, argv++) {\
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char argc_;\
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char **argv_;\
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int brk_;\
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if (argv[0][1] == '-' && argv[0][2] == '\0') {\
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argv++;\
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argc--;\
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break;\
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}\
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int i_;\
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for (i_ = 1, brk_ = 0, argv_ = argv;\
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argv[0][i_] && !brk_;\
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i_++) {\
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if (argv_ != argv)\
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break;\
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argc_ = argv[0][i_];\
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switch (argc_)
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#define ARGEND }\
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}
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#define ARGC() argc_
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#define EARGF(x) ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
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((x), abort(), (char *)0) :\
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(brk_ = 1, (argv[0][i_+1] != '\0')?\
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(&argv[0][i_+1]) :\
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(argc--, argv++, argv[0])))
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#define ARGF() ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\
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(char *)0 :\
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(brk_ = 1, (argv[0][i_+1] != '\0')?\
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(&argv[0][i_+1]) :\
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(argc--, argv++, argv[0])))
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