| | 1 | /* |
| | 2 | * Copyright (c) 1999 Apple Computer, Inc. All rights reserved. |
| | 3 | * |
| | 4 | * @APPLE_LICENSE_HEADER_START@ |
| | 5 | * |
| | 6 | * The contents of this file constitute Original Code as defined in and |
| | 7 | * are subject to the Apple Public Source License Version 1.1 (the |
| | 8 | * "License"). You may not use this file except in compliance with the |
| | 9 | * License. Please obtain a copy of the License at |
| | 10 | * http://www.apple.com/publicsource and read it before using this file. |
| | 11 | * |
| | 12 | * This Original Code and all software distributed under the License are |
| | 13 | * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| | 14 | * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES, |
| | 15 | * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY, |
| | 16 | * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the |
| | 17 | * License for the specific language governing rights and limitations |
| | 18 | * under the License. |
| | 19 | * |
| | 20 | * @APPLE_LICENSE_HEADER_END@ |
| | 21 | */ |
| | 22 | /* |
| | 23 | * Copyright (c) 1987, 1993, 1994 |
| | 24 | * The Regents of the University of California. All rights reserved. |
| | 25 | * |
| | 26 | * Redistribution and use in source and binary forms, with or without |
| | 27 | * modification, are permitted provided that the following conditions |
| | 28 | * are met: |
| | 29 | * 1. Redistributions of source code must retain the above copyright |
| | 30 | * notice, this list of conditions and the following disclaimer. |
| | 31 | * 2. Redistributions in binary form must reproduce the above copyright |
| | 32 | * notice, this list of conditions and the following disclaimer in the |
| | 33 | * documentation and/or other materials provided with the distribution. |
| | 34 | * 3. All advertising materials mentioning features or use of this software |
| | 35 | * must display the following acknowledgement: |
| | 36 | * This product includes software developed by the University of |
| | 37 | * California, Berkeley and its contributors. |
| | 38 | * 4. Neither the name of the University nor the names of its contributors |
| | 39 | * may be used to endorse or promote products derived from this software |
| | 40 | * without specific prior written permission. |
| | 41 | * |
| | 42 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND |
| | 43 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| | 44 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
| | 45 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE |
| | 46 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
| | 47 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
| | 48 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| | 49 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
| | 50 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
| | 51 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
| | 52 | * SUCH DAMAGE. |
| | 53 | */ |
| | 54 | |
| | 55 | |
| | 56 | #include <stdio.h> |
| | 57 | #include <stdlib.h> |
| | 58 | #include <string.h> |
| | 59 | |
| | 60 | #include <crt_externs.h> |
| | 61 | |
| | 62 | int opterr = 1, /* if error message should be printed */ |
| | 63 | optind = 1, /* index into parent argv vector */ |
| | 64 | optopt, /* character checked for validity */ |
| | 65 | optreset; /* reset getopt */ |
| | 66 | char *optarg; /* argument associated with option */ |
| | 67 | |
| | 68 | #define BADCH (int)'?' |
| | 69 | #define BADARG (int)':' |
| | 70 | #define EMSG "" |
| | 71 | |
| | 72 | /* |
| | 73 | * getopt -- |
| | 74 | * Parse argc/argv argument vector. |
| | 75 | */ |
| | 76 | int |
| | 77 | getopt(nargc, nargv, ostr) |
| | 78 | int nargc; |
| | 79 | char * const *nargv; |
| | 80 | const char *ostr; |
| | 81 | { |
| | 82 | char *__progname = *(*_NSGetArgv()); |
| | 83 | static char *place = EMSG; /* option letter processing */ |
| | 84 | char *oli; /* option letter list index */ |
| | 85 | |
| | 86 | if (optreset || !*place) { /* update scanning pointer */ |
| | 87 | optreset = 0; |
| | 88 | if (optind >= nargc || *(place = nargv[optind]) != '-') { |
| | 89 | place = EMSG; |
| | 90 | return (EOF); |
| | 91 | } |
| | 92 | if (place[1] && *++place == '-') { /* found "--" */ |
| | 93 | ++optind; |
| | 94 | place = EMSG; |
| | 95 | return (EOF); |
| | 96 | } |
| | 97 | } /* option letter okay? */ |
| | 98 | if ((optopt = (int)*place++) == (int)':' || |
| | 99 | !(oli = strchr(ostr, optopt))) { |
| | 100 | /* |
| | 101 | * if the user didn't specify '-' as an option, |
| | 102 | * assume it means EOF. |
| | 103 | */ |
| | 104 | if (optopt == (int)'-') |
| | 105 | return (EOF); |
| | 106 | if (!*place) |
| | 107 | ++optind; |
| | 108 | if (opterr && *ostr != ':') |
| | 109 | (void)fprintf(stderr, |
| | 110 | "%s: illegal option -- %c\n", __progname, optopt); |
| | 111 | return (BADCH); |
| | 112 | } |
| | 113 | if (*++oli != ':') { /* don't need argument */ |
| | 114 | optarg = NULL; |
| | 115 | if (!*place) |
| | 116 | ++optind; |
| | 117 | } |
| | 118 | else { /* need an argument */ |
| | 119 | if (*place) /* no white space */ |
| | 120 | optarg = place; |
| | 121 | else if (nargc <= ++optind) { /* no arg */ |
| | 122 | place = EMSG; |
| | 123 | if (*ostr == ':') |
| | 124 | return (BADARG); |
| | 125 | if (opterr) |
| | 126 | (void)fprintf(stderr, |
| | 127 | "%s: option requires an argument -- %c\n", |
| | 128 | __progname, optopt); |
| | 129 | return (BADCH); |
| | 130 | } |
| | 131 | else /* white space */ |
| | 132 | optarg = nargv[optind]; |
| | 133 | place = EMSG; |
| | 134 | ++optind; |
| | 135 | } |
| | 136 | return (optopt); /* dump back option letter */ |
| | 137 | } |
projects / apple / libc.git / blame_incremental