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 #ifdef __FreeBSD__ 40 #include <libutil.h> 41 #endif 42 43 #define SKIPWS(p) while (isspace((int)(*p))) p++ 44 #define WS "\t\n " 45 46 int 47 main(int argc, char *argv[]) 48 { 49 size_t len, lineno = 0; 50 char *line, *eptr, *longopt, *ptr, *optstring = NULL, *result = NULL; 51 char buf[1024]; 52 char *args[128]; 53 char arg[256]; 54 int nargs = -1; 55 int c; 56 int nlongopts = 0; 57 int maxnlongopts = 0; 58 int *longopt_flags = NULL; 59 struct option *longopts = NULL; 60 61 while ((line = fparseln(stdin, &len, &lineno, NULL, 0)) != NULL) { 62 if (strncmp(line, "optstring:", 10) == 0) { 63 if (optstring) 64 free(optstring); 65 optstring = strtok(&line[11], WS); 66 if (optstring == NULL) 67 errx(1, "missing optstring at line %ld", 68 (unsigned long)lineno); 69 optstring = strdup(optstring); 70 } else if (strncmp(line, "longopts:", 9) == 0) { 71 if (longopts) { 72 int i; 73 for (i = 0; i < nlongopts; i++) 74 if (longopts[i].name != NULL) 75 free(__UNCONST(longopts[i].name)); 76 free(longopts); 77 } 78 if (longopt_flags) 79 free(longopt_flags); 80 nlongopts = 0; 81 ptr = strtok(&line[10], WS); 82 if (ptr == NULL) 83 errx(1, "missing longopts at line %ld", 84 (unsigned long)lineno); 85 maxnlongopts = strtoul(ptr, &eptr, 10); 86 if (*eptr != '\0') 87 warnx("garbage in longopts at line %ld", 88 (unsigned long)lineno); 89 maxnlongopts++; /* space for trailer */ 90 longopts = 91 (struct option *)calloc(sizeof(struct option), 92 maxnlongopts); 93 if (longopts == NULL) 94 err(1, "calloc"); 95 longopt_flags = (int *)calloc(sizeof(int), maxnlongopts); 96 if (longopt_flags == NULL) 97 err(1, "calloc"); 98 } else if (strncmp(line, "longopt:", 8) == 0) { 99 if (longopts == NULL) 100 errx(1, "longopt: without longopts at line %ld", 101 (unsigned long)lineno); 102 if (nlongopts >= maxnlongopts) 103 errx(1, "longopt: too many options at line %ld", 104 (unsigned long)lineno); 105 /* name */ 106 ptr = &line[9]; 107 SKIPWS(ptr); 108 longopt = strsep(&ptr, ","); 109 if (longopt == NULL) 110 errx(1, "missing longopt at line %ld", 111 (unsigned long)lineno); 112 longopts[nlongopts].name = strdup(longopt); 113 /* has_arg */ 114 SKIPWS(ptr); 115 longopt = strsep(&ptr, ","); 116 if (*longopt != '\0') { 117 if (strncmp(longopt, "0", 1) == 0 || 118 strncmp(longopt, "no_argument", 2) == 0) 119 longopts[nlongopts].has_arg = no_argument; 120 else if (strncmp(longopt, "1", 1) == 0 || 121 strncmp(longopt, "required_argument", 8) == 0) 122 longopts[nlongopts].has_arg = required_argument; 123 else if (strncmp(longopt, "2", 1) == 0 || 124 strncmp(longopt, "optional_argument", 8) == 0) 125 longopts[nlongopts].has_arg = optional_argument; 126 else 127 errx(1, "unknown has_arg %s at line %ld", 128 longopt, (unsigned long)lineno); 129 } 130 /* flag */ 131 SKIPWS(ptr); 132 longopt = strsep(&ptr, ","); 133 if (*longopt != '\0' && 134 strncmp(longopt, "NULL", 4) != 0) 135 longopts[nlongopts].flag = &longopt_flags[nlongopts]; 136 /* val */ 137 SKIPWS(ptr); 138 longopt = strsep(&ptr, ","); 139 if (*longopt == '\0') 140 errx(1, "missing val at line %ld", 141 (unsigned long)lineno); 142 if (*longopt != '\'') { 143 longopts[nlongopts].val = 144 (int)strtoul(longopt, &eptr, 10); 145 if (*eptr != '\0') 146 errx(1, "invalid val at line %ld", 147 (unsigned long)lineno); 148 } else 149 longopts[nlongopts].val = (int)longopt[1]; 150 nlongopts++; 151 } else if (strncmp(line, "args:", 5) == 0) { 152 for (; nargs >= 0; nargs--) { 153 if (args[nargs] != NULL) 154 free(args[nargs]); 155 } 156 args[nargs = 0] = strtok(&line[6], WS); 157 if (args[nargs] == NULL) 158 errx(1, "Missing args"); 159 160 args[nargs] = strdup(args[nargs]); 161 while ((args[++nargs] = strtok(NULL, WS)) != NULL) 162 args[nargs] = strdup(args[nargs]); 163 } else if (strncmp(line, "result:", 7) == 0) { 164 int li; 165 buf[0] = '\0'; 166 optind = optreset = 1; 167 if (result) 168 free(result); 169 result = strtok(&line[8], WS); 170 if (result == NULL) 171 errx(1, "missing result at line %ld", 172 (unsigned long)lineno); 173 if (optstring == NULL) 174 errx(1, "result: without optstring"); 175 if (longopts == NULL || nlongopts == 0) 176 errx(1, "result: without longopts"); 177 result = strdup(result); 178 if (nargs == -1) 179 errx(1, "result: without args"); 180 li = -2; 181 while ((c = getopt_long(nargs, args, optstring, 182 longopts, &li)) != -1) { 183 if (c == ':') 184 errx(1, "`:' found as argument char"); 185 if (li == -2) { 186 ptr = strchr(optstring, c); 187 if (ptr == NULL) { 188 snprintf(arg, sizeof(arg), 189 "!%c,", c); 190 strcat(buf, arg); 191 continue; 192 } 193 if (ptr[1] != ':') 194 snprintf(arg, sizeof(arg), 195 "%c,", c); 196 else 197 snprintf(arg, sizeof(arg), 198 "%c=%s,", c, optarg); 199 } else { 200 switch (longopts[li].has_arg) { 201 case no_argument: 202 snprintf(arg, sizeof(arg), "-%s,", 203 longopts[li].name); 204 break; 205 case required_argument: 206 snprintf(arg, sizeof(arg), 207 "-%s=%s,", 208 longopts[li].name, optarg); 209 break; 210 case optional_argument: 211 snprintf(arg, sizeof(arg), 212 "-%s%s%s,", 213 longopts[li].name, 214 (optarg)? "=" : "", 215 (optarg)? optarg : ""); 216 break; 217 default: 218 errx(1, "internal error"); 219 } 220 } 221 strcat(buf, arg); 222 li = -2; 223 } 224 len = strlen(buf); 225 if (len > 0) { 226 buf[len - 1] = '|'; 227 buf[len] = '\0'; 228 } else { 229 buf[0] = '|'; 230 buf[1] = '\0'; 231 } 232 snprintf(arg, sizeof(arg), "%d", nargs - optind); 233 strcat(buf, arg); 234 if (strcmp(buf, result) != 0) 235 errx(1, "`%s' != `%s'", buf, result); 236 } else 237 errx(1, "unknown directive at line %ld", 238 (unsigned long)lineno); 239 free(line); 240 } 241 return 0; 242 } 243