1 /* $NetBSD: h_getopt_long.c,v 1.1 2011/01/01 23:56:49 pgoyette Exp $ */ 2 3 /*- 4 * Copyright (c) 2007 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * This code is derived from software contributed to The NetBSD Foundation 8 * by Christos Zoulas. 9 * 10 * Redistribution and use in source and binary forms, with or without 11 * modification, are permitted provided that the following conditions 12 * are met: 13 * 1. Redistributions of source code must retain the above copyright 14 * notice, this list of conditions and the following disclaimer. 15 * 2. Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS 20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS 23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 32 #include <ctype.h> 33 #include <err.h> 34 #include <getopt.h> 35 #include <stdio.h> 36 #include <string.h> 37 #include <stdlib.h> 38 #include <unistd.h> 39 40 #define SKIPWS(p) while (isspace((int)(*p))) p++ 41 #define WS "\t\n " 42 43 int 44 main(int argc, char *argv[]) 45 { 46 size_t len, lineno = 0; 47 char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL; 48 char buf[1024]; 49 char *args[128]; 50 char arg[256]; 51 int nargs = -1; 52 int c; 53 int nlongopts = 0; 54 int maxnlongopts = 0; 55 int *longopt_flags = NULL; 56 struct option *longopts = NULL; 57 58 while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) { 59 if (strncmp(line, "optstring:", 10) == 0) { 60 if (optstring) 61 free(optstring); 62 optstring = strtok(&line[11], WS); 63 if (optstring == NULL) 64 errx(1, "missing optstring at line %ld", 65 (unsigned long)lineno); 66 optstring = strdup(optstring); 67 } else if (strncmp(line, "longopts:", 9) == 0) { 68 if (longopts) { 69 int i; 70 for (i = 0; i < nlongopts; i++) 71 if (longopts[i].name != NULL) 72 free(__UNCONST(longopts[i].name)); 73 free(longopts); 74 } 75 if (longopt_flags) 76 free(longopt_flags); 77 nlongopts = 0; 78 ptr = strtok(&line[10], WS); 79 if (ptr == NULL) 80 errx(1, "missing longopts at line %ld", 81 (unsigned long)lineno); 82 maxnlongopts = strtoul(ptr, &eptr, 10); 83 if (*eptr != '\0') 84 warnx("garbage in longopts at line %ld", 85 (unsigned long)lineno); 86 maxnlongopts++; /* space for trailer */ 87 longopts = 88 (struct option *)calloc(sizeof(struct option), 89 maxnlongopts); 90 if (longopts == NULL) 91 err(1, "calloc"); 92 longopt_flags = (int *)calloc(sizeof(int), maxnlongopts); 93 if (longopt_flags == NULL) 94 err(1, "calloc"); 95 } else if (strncmp(line, "longopt:", 8) == 0) { 96 if (longopts == NULL) 97 errx(1, "longopt: without longopts at line %ld", 98 (unsigned long)lineno); 99 if (nlongopts >= maxnlongopts) 100 errx(1, "longopt: too many options at line %ld", 101 (unsigned long)lineno); 102 /* name */ 103 ptr = &line[9]; 104 SKIPWS(ptr); 105 longopt = strsep(&ptr, ","); 106 if (longopt == NULL) 107 errx(1, "missing longopt at line %ld", 108 (unsigned long)lineno); 109 longopts[nlongopts].name = strdup(longopt); 110 /* has_arg */ 111 SKIPWS(ptr); 112 longopt = strsep(&ptr, ","); 113 if (*longopt != '\0') { 114 if (strncmp(longopt, "0", 1) == 0 || 115 strncmp(longopt, "no_argument", 2) == 0) 116 longopts[nlongopts].has_arg = no_argument; 117 else if (strncmp(longopt, "1", 1) == 0 || 118 strncmp(longopt, "required_argument", 8) == 0) 119 longopts[nlongopts].has_arg = required_argument; 120 else if (strncmp(longopt, "2", 1) == 0 || 121 strncmp(longopt, "optional_argument", 8) == 0) 122 longopts[nlongopts].has_arg = optional_argument; 123 else 124 errx(1, "unknown has_arg %s at line %ld", 125 longopt, (unsigned long)lineno); 126 } 127 /* flag */ 128 SKIPWS(ptr); 129 longopt = strsep(&ptr, ","); 130 if (*longopt != '\0' && 131 strncmp(longopt, "NULL", 4) != 0) 132 longopts[nlongopts].flag = &longopt_flags[nlongopts]; 133 /* val */ 134 SKIPWS(ptr); 135 longopt = strsep(&ptr, ","); 136 if (*longopt == '\0') 137 errx(1, "missing val at line %ld", 138 (unsigned long)lineno); 139 if (*longopt != '\'') { 140 longopts[nlongopts].val = 141 (int)strtoul(longopt, &eptr, 10); 142 if (*eptr != '\0') 143 errx(1, "invalid val at line %ld", 144 (unsigned long)lineno); 145 } else 146 longopts[nlongopts].val = (int)longopt[1]; 147 nlongopts++; 148 } else if (strncmp(line, "args:", 5) == 0) { 149 for (; nargs >= 0; nargs--) { 150 if (args[nargs] != NULL) 151 free(args[nargs]); 152 } 153 args[nargs = 0] = strtok(&line[6], WS); 154 if (args[nargs] == NULL) 155 errx(1, "Missing args"); 156 157 args[nargs] = strdup(args[nargs]); 158 while ((args[++nargs] = strtok(NULL, WS)) != NULL) 159 args[nargs] = strdup(args[nargs]); 160 } else if (strncmp(line, "result:", 7) == 0) { 161 int li; 162 buf[0] = '\0'; 163 optind = optreset = 1; 164 if (result) 165 free(result); 166 result = strtok(&line[8], WS); 167 if (result == NULL) 168 errx(1, "missing result at line %ld", 169 (unsigned long)lineno); 170 if (optstring == NULL) 171 errx(1, "result: without optstring"); 172 if (longopts == NULL || nlongopts == 0) 173 errx(1, "result: without longopts"); 174 result = strdup(result); 175 if (nargs == -1) 176 errx(1, "result: without args"); 177 li = -2; 178 while ((c = getopt_long(nargs, args, optstring, 179 longopts, &li)) != -1) { 180 if (c == ':') 181 errx(1, "`:' found as argument char"); 182 if (li == -2) { 183 ptr = strchr(optstring, c); 184 if (ptr == NULL) { 185 snprintf(arg, sizeof(arg), 186 "!%c,", c); 187 strcat(buf, arg); 188 continue; 189 } 190 if (ptr[1] != ':') 191 snprintf(arg, sizeof(arg), 192 "%c,", c); 193 else 194 snprintf(arg, sizeof(arg), 195 "%c=%s,", c, optarg); 196 } else { 197 switch (longopts[li].has_arg) { 198 case no_argument: 199 snprintf(arg, sizeof(arg), "-%s,", 200 longopts[li].name); 201 break; 202 case required_argument: 203 snprintf(arg, sizeof(arg), 204 "-%s=%s,", 205 longopts[li].name, optarg); 206 break; 207 case optional_argument: 208 snprintf(arg, sizeof(arg), 209 "-%s%s%s,", 210 longopts[li].name, 211 (optarg)? "=" : "", 212 (optarg)? optarg : ""); 213 break; 214 default: 215 errx(1, "internal error"); 216 } 217 } 218 strcat(buf, arg); 219 li = -2; 220 } 221 len = strlen(buf); 222 if (len > 0) { 223 buf[len - 1] = '|'; 224 buf[len] = '\0'; 225 } else { 226 buf[0] = '|'; 227 buf[1] = '\0'; 228 } 229 snprintf(arg, sizeof(arg), "%d", nargs - optind); 230 strcat(buf, arg); 231 if (strcmp(buf, result) != 0) 232 errx(1, "`%s' != `%s'", buf, result); 233 } else 234 errx(1, "unknown directive at line %ld", 235 (unsigned long)lineno); 236 free(line); 237 } 238 return 0; 239 } 240