1*cdf0e10cSrcweir #include <stdio.h> 2*cdf0e10cSrcweir #include <string.h> 3*cdf0e10cSrcweir 4*cdf0e10cSrcweir #define EPR fprintf(stderr, 5*cdf0e10cSrcweir #define ERR(str, chr) if(opterr) { EPR "%s%c\n", str, chr); } 6*cdf0e10cSrcweir 7*cdf0e10cSrcweir int opterr = 1; 8*cdf0e10cSrcweir int optind = 1; 9*cdf0e10cSrcweir int optopt; 10*cdf0e10cSrcweir char *optarg; 11*cdf0e10cSrcweir 12*cdf0e10cSrcweir int 13*cdf0e10cSrcweir stgetopt(int argc, char *const argv[], const char *opts) 14*cdf0e10cSrcweir { 15*cdf0e10cSrcweir static int sp = 1; 16*cdf0e10cSrcweir register int c; 17*cdf0e10cSrcweir register char *cp; 18*cdf0e10cSrcweir 19*cdf0e10cSrcweir if (sp == 1) 20*cdf0e10cSrcweir { 21*cdf0e10cSrcweir if (optind >= argc || 22*cdf0e10cSrcweir argv[optind][0] != '-' || argv[optind][1] == '\0') 23*cdf0e10cSrcweir return -1; 24*cdf0e10cSrcweir else if (strcmp(argv[optind], "--") == 0) 25*cdf0e10cSrcweir { 26*cdf0e10cSrcweir optind++; 27*cdf0e10cSrcweir return -1; 28*cdf0e10cSrcweir } 29*cdf0e10cSrcweir else if (strcmp(argv[optind], "-isysroot") == 0) 30*cdf0e10cSrcweir { 31*cdf0e10cSrcweir // skip Mac OS X SDK selection flags 32*cdf0e10cSrcweir optind++; optind++; 33*cdf0e10cSrcweir } 34*cdf0e10cSrcweir } 35*cdf0e10cSrcweir optopt = c = argv[optind][sp]; 36*cdf0e10cSrcweir if (c == ':' || (cp = strchr(opts, c)) == 0) 37*cdf0e10cSrcweir { 38*cdf0e10cSrcweir ERR(": illegal option -- ", c); 39*cdf0e10cSrcweir if (argv[optind][++sp] == '\0') 40*cdf0e10cSrcweir { 41*cdf0e10cSrcweir optind++; 42*cdf0e10cSrcweir sp = 1; 43*cdf0e10cSrcweir } 44*cdf0e10cSrcweir return '?'; 45*cdf0e10cSrcweir } 46*cdf0e10cSrcweir if (*++cp == ':') 47*cdf0e10cSrcweir { 48*cdf0e10cSrcweir if (argv[optind][sp + 1] != '\0') 49*cdf0e10cSrcweir optarg = &argv[optind++][sp + 1]; 50*cdf0e10cSrcweir else 51*cdf0e10cSrcweir if (++optind >= argc) 52*cdf0e10cSrcweir { 53*cdf0e10cSrcweir ERR(": option requires an argument -- ", c); 54*cdf0e10cSrcweir sp = 1; 55*cdf0e10cSrcweir return '?'; 56*cdf0e10cSrcweir } 57*cdf0e10cSrcweir else 58*cdf0e10cSrcweir optarg = argv[optind++]; 59*cdf0e10cSrcweir sp = 1; 60*cdf0e10cSrcweir } 61*cdf0e10cSrcweir else 62*cdf0e10cSrcweir { 63*cdf0e10cSrcweir if (argv[optind][++sp] == '\0') 64*cdf0e10cSrcweir { 65*cdf0e10cSrcweir sp = 1; 66*cdf0e10cSrcweir optind++; 67*cdf0e10cSrcweir } 68*cdf0e10cSrcweir optarg = 0; 69*cdf0e10cSrcweir } 70*cdf0e10cSrcweir return c; 71*cdf0e10cSrcweir } 72