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| 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 | + *---------------------------------------------------------------------------*/ | |
| 26 | + | |
| 27 | +/* Modified to support --help and --version, as well as /? on Windows | |
| 28 | + * by Georg Brandl. */ | |
| 29 | + | |
| 30 | +#include <stdio.h> | |
| 31 | +#include <string.h> | |
| 32 | + | |
| 33 | +#ifdef __cplusplus | |
| 34 | +extern "C" { | |
| 35 | +#endif | |
| 36 | + | |
| 37 | +int _PyOS_opterr = 1; /* generate error messages */ | |
| 38 | +int _PyOS_optind = 1; /* index into argv array */ | |
| 39 | +char *_PyOS_optarg = NULL; /* optional argument */ | |
| 40 | + | |
| 41 | +int _PyOS_GetOpt(int argc, char **argv, char *optstring) | |
| 42 | +{ | |
| 43 | + static char *opt_ptr = ""; | |
| 44 | + char *ptr; | |
| 45 | + int option; | |
| 46 | + | |
| 47 | + if (*opt_ptr == '\0') { | |
| 48 | + | |
| 49 | + if (_PyOS_optind >= argc) | |
| 50 | + return -1; | |
| 51 | +#ifdef MS_WINDOWS | |
| 52 | + else if (strcmp(argv[_PyOS_optind], "/?") == 0) { | |
| 53 | + ++_PyOS_optind; | |
| 54 | + return 'h'; | |
| 55 | + } | |
| 56 | +#endif | |
| 57 | + | |
| 58 | + else if (argv[_PyOS_optind][0] != '-' || | |
| 59 | + argv[_PyOS_optind][1] == '\0' /* lone dash */ ) | |
| 60 | + return -1; | |
| 61 | + | |
| 62 | + else if (strcmp(argv[_PyOS_optind], "--") == 0) { | |
| 63 | + ++_PyOS_optind; | |
| 64 | + return -1; | |
| 65 | + } | |
| 66 | + | |
| 67 | + else if (strcmp(argv[_PyOS_optind], "--help") == 0) { | |
| 68 | + ++_PyOS_optind; | |
| 69 | + return 'h'; | |
| 70 | + } | |
| 71 | + | |
| 72 | + else if (strcmp(argv[_PyOS_optind], "--version") == 0) { | |
| 73 | + ++_PyOS_optind; | |
| 74 | + return 'V'; | |
| 75 | + } | |
| 76 | + | |
| 77 | + | |
| 78 | + opt_ptr = &argv[_PyOS_optind++][1]; | |
| 79 | + } | |
| 80 | + | |
| 81 | + if ( (option = *opt_ptr++) == '\0') | |
| 82 | + return -1; | |
| 83 | + | |
| 84 | + if ((ptr = strchr(optstring, option)) == NULL) { | |
| 85 | + if (_PyOS_opterr) | |
| 86 | + fprintf(stderr, "Unknown option: -%c\n", option); | |
| 87 | + | |
| 88 | + return '_'; | |
| 89 | + } | |
| 90 | + | |
| 91 | + if (*(ptr + 1) == ':') { | |
| 92 | + if (*opt_ptr != '\0') { | |
| 93 | + _PyOS_optarg = opt_ptr; | |
| 94 | + opt_ptr = ""; | |
| 95 | + } | |
| 96 | + | |
| 97 | + else { | |
| 98 | + if (_PyOS_optind >= argc) { | |
| 99 | + if (_PyOS_opterr) | |
| 100 | + fprintf(stderr, | |
| 101 | + "Argument expected for the -%c option\n", option); | |
| 102 | + return '_'; | |
| 103 | + } | |
| 104 | + | |
| 105 | + _PyOS_optarg = argv[_PyOS_optind++]; | |
| 106 | + } | |
| 107 | + } | |
| 108 | + | |
| 109 | + return option; | |
| 110 | +} | |
| 111 | + | |
| 112 | +#ifdef __cplusplus | |
| 113 | +} | |
| 114 | +#endif | |
| 115 | + | |