arg.h (2170B)
1 /* 2 * Copy me if you can. 3 * by 20h 4 * 5 * 2012-2016 Christoph Lohmann <20h at r-36 dot net> 6 * 7 * Permission is hereby granted, free of charge, to any person obtaining a 8 * copy of this software and associated documentation files (the "Software"), 9 * to deal in the Software without restriction, including without limitation 10 * the rights to use, copy, modify, merge, publish, distribute, sublicense, 11 * and/or sell copies of the Software, and to permit persons to whom the 12 * Software is furnished to do so, subject to the following conditions: 13 * 14 * The above copyright notice and this permission notice shall be included in 15 * all copies or substantial portions of the Software. 16 * 17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR 18 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, 19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL 20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER 21 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING 22 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER 23 * DEALINGS IN THE SOFTWARE. 24 */ 25 26 #ifndef ARG_H__ 27 #define ARG_H__ 28 29 extern char *argv0; 30 31 /* use main(int argc, char *argv[]) */ 32 #define ARGBEGIN for (argv0 = *argv, argv++, argc--;\ 33 argv[0] && argv[0][0] == '-'\ 34 && argv[0][1];\ 35 argc--, argv++) {\ 36 char argc_;\ 37 char **argv_;\ 38 int brk_;\ 39 if (argv[0][1] == '-' && argv[0][2] == '\0') {\ 40 argv++;\ 41 argc--;\ 42 break;\ 43 }\ 44 int i_;\ 45 for (i_ = 1, brk_ = 0, argv_ = argv;\ 46 argv[0][i_] && !brk_;\ 47 i_++) {\ 48 if (argv_ != argv)\ 49 break;\ 50 argc_ = argv[0][i_];\ 51 switch (argc_) 52 53 #define ARGEND }\ 54 } 55 56 #define ARGC() argc_ 57 58 #define EARGF(x) ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\ 59 ((x), abort(), (char *)0) :\ 60 (brk_ = 1, (argv[0][i_+1] != '\0')?\ 61 (&argv[0][i_+1]) :\ 62 (argc--, argv++, argv[0]))) 63 64 #define ARGF() ((argv[0][i_+1] == '\0' && argv[1] == NULL)?\ 65 (char *)0 :\ 66 (brk_ = 1, (argv[0][i_+1] != '\0')?\ 67 (&argv[0][i_+1]) :\ 68 (argc--, argv++, argv[0]))) 69 70 #endif