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4223
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1 #include "opt.h"
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2
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3 #include <string.h>
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4
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5 int opt_ind;
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6 int opt_err;
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7 const char *opt_arg;
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8 static const char *nextchar;
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9
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10 int opt_get(int argc, char *const *argv, const char *opts) {
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11 const char *p;
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12
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13 if (!nextchar || !*nextchar) {
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14 if (opt_ind < argc)
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15 ++opt_ind;
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16 if (opt_ind >= argc || argv[opt_ind][0] != '-' || !argv[opt_ind][1]) {
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17 return -1;
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18 }
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19 if (argv[opt_ind][1] == '-' && argv[opt_ind][2] == '\0') {
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20 ++opt_ind;
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21 return -1;
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22 }
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23 nextchar = argv[opt_ind] + 1;
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24 }
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25
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26 if ((p = strchr(opts, *nextchar)) && (*p != ':' || p == opts)) {
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27 if (p[1] == ':') {
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28 if (nextchar[1]) {
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29 opt_arg = nextchar + 1;
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30 } else if (opt_ind + 1 >= argc) {
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31 opt_arg = NULL;
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32 } else {
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33 opt_arg = argv[++opt_ind];
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34 }
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35 nextchar = NULL;
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36 } else {
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37 ++nextchar;
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38 }
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39 return p[0];
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40 }
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41
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42 opt_err = *nextchar++;
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43 return '\0';
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44 }
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45
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46 #if 0
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47 void opt_reset(void) {
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48 opt_ind = 0;
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49 nextchar = NULL;
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50 }
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51 #endif
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