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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 4680 | right-hear | 1 | /* |
| 2 | * This is a version of the public domain getopt implementation by |
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| 3 | * Henry Spencer originally posted to net.sources. |
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| 4 | * |
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| 5 | * This file is in the public domain. |
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| 6 | */ |
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| 7 | |||
| 8 | #include |
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| 9 | #include |
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| 10 | |||
| 11 | #define getopt fz_getopt |
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| 12 | #define optarg fz_optarg |
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| 13 | #define optind fz_optind |
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| 14 | |||
| 15 | char *optarg; /* Global argument pointer. */ |
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| 16 | int optind = 0; /* Global argv index. */ |
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| 17 | |||
| 18 | static char *scan = NULL; /* Private scan pointer. */ |
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| 19 | |||
| 20 | int |
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| 21 | getopt(int argc, char *argv[], char *optstring) |
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| 22 | { |
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| 23 | char c; |
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| 24 | char *place; |
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| 25 | |||
| 26 | optarg = NULL; |
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| 27 | |||
| 28 | if (scan == NULL || *scan == '\0') { |
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| 29 | if (optind == 0) |
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| 30 | optind++; |
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| 31 | |||
| 32 | if (optind >= argc || argv[optind][0] != '-' || argv[optind][1] == '\0') |
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| 33 | return EOF; |
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| 34 | if (argv[optind][1] == '-' && argv[optind][2] == '\0') { |
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| 35 | optind++; |
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| 36 | return EOF; |
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| 37 | } |
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| 38 | |||
| 39 | scan = argv[optind]+1; |
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| 40 | optind++; |
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| 41 | } |
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| 42 | |||
| 43 | c = *scan++; |
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| 44 | place = strchr(optstring, c); |
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| 45 | |||
| 46 | if (place == NULL || c == ':') { |
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| 47 | fprintf(stderr, "%s: unknown option -%c\n", argv[0], c); |
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| 48 | return '?'; |
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| 49 | } |
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| 50 | |||
| 51 | place++; |
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| 52 | if (*place == ':') { |
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| 53 | if (*scan != '\0') { |
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| 54 | optarg = scan; |
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| 55 | scan = NULL; |
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| 56 | } else if( optind < argc ) { |
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| 57 | optarg = argv[optind]; |
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| 58 | optind++; |
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| 59 | } else { |
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| 60 | fprintf(stderr, "%s: option requires argument -%c\n", argv[0], c); |
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| 61 | return ':'; |
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| 62 | } |
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| 63 | } |
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| 64 | |||
| 65 | return c; |
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| 66 | } |