Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 1 | /*---------------------------------------------------------------------------* |
| 2 | * <RCS keywords> |
| 3 | * |
| 4 | * C++ Library |
| 5 | * |
| 6 | * Copyright 1992-1994, David Gottner |
| 7 | * |
| 8 | * All Rights Reserved |
| 9 | * |
| 10 | * Permission to use, copy, modify, and distribute this software and its |
| 11 | * documentation for any purpose and without fee is hereby granted, |
| 12 | * provided that the above copyright notice, this permission notice and |
| 13 | * the following disclaimer notice appear unmodified in all copies. |
| 14 | * |
| 15 | * I DISCLAIM ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL |
| 16 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL I |
| 17 | * BE LIABLE FOR ANY SPECIAL, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY |
| 18 | * DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA, OR PROFITS, WHETHER |
| 19 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT |
| 20 | * OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. |
| 21 | * |
| 22 | * Nevertheless, I would like to know about bugs in this library or |
| 23 | * suggestions for improvment. Send bug reports and feedback to |
| 24 | * davegottner@delphi.com. |
| 25 | *---------------------------------------------------------------------------*/ |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 26 | |
| 27 | #include <stdio.h> |
| 28 | #include <string.h> |
| 29 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 30 | #define bool int |
| 31 | #define TRUE 1 |
| 32 | #define FALSE 0 |
| 33 | |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 34 | |
| 35 | bool opterr = TRUE; /* generate error messages */ |
| 36 | int optind = 1; /* index into argv array */ |
| 37 | char * optarg = NULL; /* optional argument */ |
| 38 | |
| 39 | |
Guido van Rossum | 10bb1c4 | 1995-01-20 16:54:36 +0000 | [diff] [blame^] | 40 | int getopt(argc,argv,optstring) |
| 41 | int argc; |
| 42 | char *argv[]; |
| 43 | char optstring[]; |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 44 | { |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 45 | static char *opt_ptr = ""; |
| 46 | register char *ptr; |
| 47 | int option; |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 48 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 49 | if (*opt_ptr == '\0') { |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 50 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 51 | if (optind >= argc || argv[optind][0] != '-') |
| 52 | return -1; |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 53 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 54 | else if (strcmp(argv[optind], "--") == 0) { |
| 55 | ++optind; |
| 56 | return -1; |
| 57 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 58 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 59 | opt_ptr = &argv[optind++][1]; |
| 60 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 61 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 62 | if ((ptr = strchr(optstring, option = *opt_ptr++)) == NULL) { |
| 63 | if (opterr) |
| 64 | fprintf(stderr, "Unknown option: -%c\n", option); |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 65 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 66 | return '?'; |
| 67 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 68 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 69 | if (*(ptr + 1) == ':') { |
| 70 | if (*opt_ptr != '\0') { |
| 71 | optarg = opt_ptr; |
| 72 | opt_ptr = ""; |
| 73 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 74 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 75 | else { |
| 76 | if (optind >= argc) { |
| 77 | if (opterr) |
| 78 | fprintf(stderr, |
| 79 | "Argument expected for the -%c option\n", option); |
| 80 | return '?'; |
| 81 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 82 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 83 | optarg = argv[optind++]; |
| 84 | } |
| 85 | } |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 86 | |
Guido van Rossum | 871b805 | 1994-04-28 12:33:58 +0000 | [diff] [blame] | 87 | return option; |
Guido van Rossum | 2508ade | 1994-04-14 14:08:22 +0000 | [diff] [blame] | 88 | } |