contrib/netbsd-tests/lib/libc/stdlib/h_getopt_long.c

   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 }