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
  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 }