mirror of
git://git.suckless.org/ubase
synced 2024-12-19 05:14:39 +00:00
64 lines
1.2 KiB
C
64 lines
1.2 KiB
C
/*
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* Copy me if you can.
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* by 20h
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*/
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#ifndef ARG_H__
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#define ARG_H__
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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][1]\
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&& argv[0][0] == '-';\
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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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for (brk_ = 0, argv[0]++, argv_ = argv;\
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argv[0][0] && !brk_;\
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argv[0]++) {\
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if (argv_ != argv)\
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break;\
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argc_ = argv[0][0];\
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switch (argc_)
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/* Handles obsolete -NUM syntax */
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#define ARGNUM case '0':\
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case '1':\
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case '2':\
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case '3':\
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case '4':\
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case '5':\
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case '6':\
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case '7':\
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case '8':\
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case '9'
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#define ARGEND }\
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}
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#define ARGC() argc_
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#define ARGNUMF(base) (brk_ = 1, estrtol(argv[0], (base)))
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#define EARGF(x) ((argv[0][1] == '\0' && argv[1] == NULL)?\
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((x), abort(), (char *)0) :\
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(brk_ = 1, (argv[0][1] != '\0')?\
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(&argv[0][1]) :\
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(argc--, argv++, argv[0])))
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#define ARGF() ((argv[0][1] == '\0' && argv[1] == NULL)?\
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(char *)0 :\
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(brk_ = 1, (argv[0][1] != '\0')?\
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(&argv[0][1]) :\
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(argc--, argv++, argv[0])))
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#endif
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