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https://github.com/saymrwulf/uhd.git
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f1ebf68829
* Wrapped uhd::device_addrs_t, added find functions for multi_usrp, multi_usrp_clock * Replaced getopt with public domain implementation * Minor bugfixes
70 lines
1.6 KiB
C
70 lines
1.6 KiB
C
/*
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* This file was copied from the following newsgroup posting:
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*
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* Newsgroups: mod.std.unix
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* Subject: public domain AT&T getopt source
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* Date: 3 Nov 85 19:34:15 GMT
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*
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* Here's something you've all been waiting for: the AT&T public domain
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* source for getopt(3). It is the code which was given out at the 1985
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* UNIFORUM conference in Dallas. I obtained it by electronic mail
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* directly from AT&T. The people there assure me that it is indeed
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* in the public domain.
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*/
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#include <stdio.h>
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#include <string.h>
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#define ERR(szz,czz) if(opterr){fprintf(stderr,"%s%s%c\n",argv[0],szz,czz);}
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int opterr = 1;
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int optind = 1;
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int optopt;
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char *optarg;
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int
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getopt(int argc, char **argv, char *opts)
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{
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static int sp;
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int c;
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char *cp;
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sp = 1;
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if (sp == 1) {
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if (optind >= argc ||
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argv[optind][0] != '-' || argv[optind][1] == '\0')
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return (EOF);
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else if (strcmp(argv[optind], "--") == 0) {
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optind++;
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return (EOF);
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}
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}
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optopt = c = argv[optind][sp];
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if (c == ':' || (cp = strchr(opts, c)) == NULL) {
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ERR(": illegal option -- ", c);
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if (argv[optind][++sp] == '\0') {
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optind++;
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sp = 1;
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}
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return ('?');
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}
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if (*++cp == ':') {
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if (argv[optind][sp + 1] != '\0')
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optarg = &argv[optind++][sp + 1];
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else if (++optind >= argc) {
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ERR(": option requires an argument -- ", c);
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sp = 1;
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return ('?');
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} else
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optarg = argv[optind++];
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sp = 1;
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} else {
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if (argv[optind][++sp] == '\0') {
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sp = 1;
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optind++;
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}
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optarg = NULL;
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}
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return (c);
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}
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