locale/programs/ld-messages.c

   1 /* Copyright (C) 1995, 1996, 1997, 1998 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.ai.mit.edu>, 1995.
   4
   5    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    License, or (at your option) any later version.
   9
  10    The GNU C Library is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 02111-1307, USA.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #include <alloca.h>
  25 #include <langinfo.h>
  26 #include <string.h>
  27 #include <sys/uio.h>
  28
  29 #ifdef HAVE_REGEX
  30 # include <regex.h>
  31 #else
  32 # include <rx.h>
  33 #endif
  34
  35 /* Undefine following line in production version.  */
  36 /* #define NDEBUG 1 */
  37 #include <assert.h>
  38
  39 #include "locales.h"
  40 #include "stringtrans.h"
  41 #include "localeinfo.h"
  42
  43
  44 extern void *xmalloc (size_t __n);
  45
  46
  47 /* The real definition of the struct for the LC_MESSAGES locale.  */
  48 struct locale_messages_t
  49 {
  50   const char *yesexpr;
  51   const char *noexpr;
  52   const char *yesstr;
  53   const char *nostr;
  54 };
  55
  56
  57 void
  58 messages_startup (struct linereader *lr, struct localedef_t *locale,
  59                   struct charset_t *charset)
  60 {
  61   struct locale_messages_t *messages;
  62
  63   /* We have a definition for LC_MESSAGES.  */
  64   copy_posix.mask &= ~(1 << LC_MESSAGES);
  65
  66   /* It is important that we always use UCS1 encoding for strings now.  */
  67   encoding_method = ENC_UCS1;
  68
  69   locale->categories[LC_MESSAGES].messages = messages =
  70     (struct locale_messages_t *) xmalloc (sizeof (struct locale_messages_t));
  71
  72   memset (messages, '\0', sizeof (struct locale_messages_t));
  73 }
  74
  75
  76 void
  77 messages_finish (struct localedef_t *locale)
  78 {
  79   struct locale_messages_t *messages
  80     = locale->categories[LC_MESSAGES].messages;
  81
  82   /* The fields YESSTR and NOSTR are optional.  */
  83   if (messages->yesexpr == NULL)
  84     {
  85       if (!be_quiet)
  86         error (0, 0, _("field `%s' in category `%s' undefined"),
  87                "yesexpr", "LC_MESSAGES");
  88     }
  89   else
  90     {
  91       int result;
  92       regex_t re;
  93
  94       /* Test whether it are correct regular expressions.  */
  95       result = regcomp (&re, messages->yesexpr, REG_EXTENDED);
  96       if (result != 0 && !be_quiet)
  97         {
  98           char errbuf[BUFSIZ];
  99
 100           (void) regerror (result, &re, errbuf, BUFSIZ);
 101           error (0, 0, _("\
 102 no correct regular expression for field `%s' in category `%s': %s"),
 103                  "yesexpr", "LC_MESSAGES", errbuf);
 104         }
 105     }
 106
 107   if (messages->noexpr == NULL)
 108     {
 109       if (!be_quiet)
 110         error (0, 0, _("field `%s' in category `%s' undefined"),
 111                "noexpr", "LC_MESSAGES");
 112     }
 113   else
 114     {
 115       int result;
 116       regex_t re;
 117
 118       /* Test whether it are correct regular expressions.  */
 119       result = regcomp (&re, messages->noexpr, REG_EXTENDED);
 120       if (result != 0 && !be_quiet)
 121         {
 122           char errbuf[BUFSIZ];
 123
 124           (void) regerror (result, &re, errbuf, BUFSIZ);
 125           error (0, 0, _("\
 126 no correct regular expression for field `%s' in category `%s': %s"),
 127                  "noexpr", "LC_MESSAGES", errbuf);
 128         }
 129     }
 130 }
 131
 132
 133 void
 134 messages_output (struct localedef_t *locale, const char *output_path)
 135 {
 136   struct locale_messages_t *messages
 137     = locale->categories[LC_MESSAGES].messages;
 138   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES)];
 139   struct locale_file data;
 140   u_int32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES)];
 141   size_t cnt = 0;
 142
 143   if ((locale->binary & (1 << LC_MESSAGES)) != 0)
 144     {
 145       iov[0].iov_base = messages;
 146       iov[0].iov_len = locale->len[LC_MESSAGES];
 147
 148       write_locale_data (output_path, "LC_MESSAGES", 1, iov);
 149
 150       return;
 151     }
 152
 153   data.magic = LIMAGIC (LC_MESSAGES);
 154   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES);
 155   iov[cnt].iov_base = (void *) &data;
 156   iov[cnt].iov_len = sizeof (data);
 157   ++cnt;
 158
 159   iov[cnt].iov_base = (void *) idx;
 160   iov[cnt].iov_len = sizeof (idx);
 161   ++cnt;
 162
 163   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 164   iov[cnt].iov_base = (void *) (messages->yesexpr ?: "");
 165   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 166   ++cnt;
 167
 168   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 169   iov[cnt].iov_base = (void *) (messages->noexpr ?: "");
 170   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 171   ++cnt;
 172
 173   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 174   iov[cnt].iov_base = (void *) (messages->yesstr ?: "");
 175   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 176   ++cnt;
 177
 178   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 179   iov[cnt].iov_base = (void *) (messages->nostr ?: "");
 180   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 181
 182   assert (cnt + 1 == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES));
 183
 184   write_locale_data (output_path, "LC_MESSAGES",
 185                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES), iov);
 186 }
 187
 188
 189 void
 190 messages_add (struct linereader *lr, struct localedef_t *locale,
 191               enum token_t tok, struct token *code,
 192               struct charset_t *charset)
 193 {
 194   struct locale_messages_t *messages
 195     = locale->categories[LC_MESSAGES].messages;
 196
 197   switch (tok)
 198     {
 199     case tok_yesexpr:
 200       if (code->val.str.start == NULL)
 201         {
 202           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 203                     "yesexpr", "LC_MESSAGES");
 204           messages->yesexpr = "";
 205         }
 206       else
 207         messages->yesexpr = code->val.str.start;
 208       break;
 209
 210     case tok_noexpr:
 211       if (code->val.str.start == NULL)
 212         {
 213           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 214                     "noexpr", "LC_MESSAGES");
 215           messages->noexpr = "";
 216         }
 217       else
 218         messages->noexpr = code->val.str.start;
 219       break;
 220
 221     case tok_yesstr:
 222       if (code->val.str.start == NULL)
 223         {
 224           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 225                     "yesstr", "LC_MESSAGES");
 226           messages->yesstr = "";
 227         }
 228       else
 229         messages->yesstr = code->val.str.start;
 230       break;
 231
 232     case tok_nostr:
 233       if (code->val.str.start == NULL)
 234         {
 235           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 236                     "nostr", "LC_MESSAGES");
 237           messages->nostr = "";
 238         }
 239       else
 240         messages->nostr = code->val.str.start;
 241       break;
 242
 243     default:
 244       assert (! "unknown token in category `LC_MESSAGES': should not happen");
 245     }
 246 }