65 lines
1.5 KiB
C
65 lines
1.5 KiB
C
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#include <unistd.h>
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#include <string.h>
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#include <getopt.h>
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/* Written 2000 by Werner Almesberger */
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static const char *__resume;
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int getopt_long(int argc,char *const argv[],const char *optstring,
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const struct option *longopts,int *longindex)
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{
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char *here;
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optarg = NULL;
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if (!__resume) {
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if (argc == optind || *argv[optind] != '-') return -1;
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if (argv[optind][1] == '-') {
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const struct option *opt;
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optarg = strchr(argv[optind],'=');
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if (optarg) optarg++;
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for (opt = longopts; opt->name &&
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(optarg || strcmp(opt->name,argv[optind]+2)) &&
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(!optarg || strlen(opt->name) != optarg-argv[optind]-3 ||
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strncmp(opt->name,argv[optind]+2,optarg-argv[optind]-3));
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opt++);
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optind++;
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if (!opt->name) return '?';
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if ((opt->has_arg == no_argument && optarg) ||
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(opt->has_arg == required_argument && !optarg)) return ':';
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if (longindex) *longindex = opt-longopts;
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if (!opt->flag) return opt->val;
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*opt->flag = opt->val;
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return 0;
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}
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else {
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__resume = argv[optind]+1;
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}
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}
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here = strchr(optstring,*__resume);
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if (!here) {
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optind++;
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__resume = NULL;
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return '?';
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}
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if (here[1] != ':') {
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if (!*++__resume) __resume = NULL;
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}
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else {
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if (__resume[1]) optarg = (char *) __resume+1;
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else {
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optarg = (char *) argv[++optind];
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if (optind == argc || *argv[optind] == '-') {
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optind++;
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__resume = NULL;
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return ':';
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}
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}
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__resume = NULL;
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}
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if (!__resume) optind++;
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return *here;
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}
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