locale/programs/ld-messages.c

   1 /* Copyright (C) 1995, 1996, 1997 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 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   /* It is important that we always use UCS1 encoding for strings now.  */
  64   encoding_method = ENC_UCS1;
  65
  66   locale->categories[LC_MESSAGES].messages = messages =
  67     (struct locale_messages_t *) xmalloc (sizeof (struct locale_messages_t));
  68
  69   memset (messages, '\0', sizeof (struct locale_messages_t));
  70 }
  71
  72
  73 void
  74 messages_finish (struct localedef_t *locale)
  75 {
  76   struct locale_messages_t *messages
  77     = locale->categories[LC_MESSAGES].messages;
  78
  79   /* The fields YESSTR and NOSTR are optional.  */
  80   if (messages->yesexpr == NULL && !be_quiet)
  81     error (0, 0, _("field `%s' in category `%s' undefined"),
  82            "yesexpr", "LC_MESSAGES");
  83   else
  84     {
  85       int result;
  86       regex_t re;
  87
  88       /* Test whether it are correct regular expressions.  */
  89       result = regcomp (&re, messages->yesexpr, REG_EXTENDED);
  90       if (result != 0 && !be_quiet)
  91         {
  92           char errbuf[BUFSIZ];
  93
  94           (void) regerror (result, &re, errbuf, BUFSIZ);
  95           error (0, 0, _("\
  96 no correct regular expression for field `%s' in category `%s': %s"),
  97                  "yesexpr", "LC_MESSAGES", errbuf);
  98         }
  99     }
 100
 101   if (messages->noexpr == NULL && !be_quiet)
 102     error (0, 0, _("field `%s' in category `%s' undefined"),
 103            "noexpr", "LC_MESSAGES");
 104   else
 105     {
 106       int result;
 107       regex_t re;
 108
 109       /* Test whether it are correct regular expressions.  */
 110       result = regcomp (&re, messages->noexpr, REG_EXTENDED);
 111       if (result != 0 && !be_quiet)
 112         {
 113           char errbuf[BUFSIZ];
 114
 115           (void) regerror (result, &re, errbuf, BUFSIZ);
 116           error (0, 0, _("\
 117 no correct regular expression for field `%s' in category `%s': %s"),
 118                  "noexpr", "LC_MESSAGES", errbuf);
 119         }
 120     }
 121 }
 122
 123
 124 void
 125 messages_output (struct localedef_t *locale, const char *output_path)
 126 {
 127   struct locale_messages_t *messages
 128     = locale->categories[LC_MESSAGES].messages;
 129   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES)];
 130   struct locale_file data;
 131   u_int32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES)];
 132   size_t cnt = 0;
 133
 134   if ((locale->binary & (1 << LC_MESSAGES)) != 0)
 135     {
 136       iov[0].iov_base = messages;
 137       iov[0].iov_len = locale->len[LC_MESSAGES];
 138
 139       write_locale_data (output_path, "LC_MESSAGES", 1, iov);
 140
 141       return;
 142     }
 143
 144   data.magic = LIMAGIC (LC_MESSAGES);
 145   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES);
 146   iov[cnt].iov_base = (void *) &data;
 147   iov[cnt].iov_len = sizeof (data);
 148   ++cnt;
 149
 150   iov[cnt].iov_base = (void *) idx;
 151   iov[cnt].iov_len = sizeof (idx);
 152   ++cnt;
 153
 154   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 155   iov[cnt].iov_base = (void *) (messages->yesexpr ?: "");
 156   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 157   ++cnt;
 158
 159   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 160   iov[cnt].iov_base = (void *) (messages->noexpr ?: "");
 161   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 162   ++cnt;
 163
 164   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 165   iov[cnt].iov_base = (void *) (messages->yesstr ?: "");
 166   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 167   ++cnt;
 168
 169   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 170   iov[cnt].iov_base = (void *) (messages->nostr ?: "");
 171   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 172
 173   assert (cnt + 1 == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES));
 174
 175   write_locale_data (output_path, "LC_MESSAGES",
 176                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MESSAGES), iov);
 177 }
 178
 179
 180 void
 181 messages_add (struct linereader *lr, struct localedef_t *locale,
 182               enum token_t tok, struct token *code,
 183               struct charset_t *charset)
 184 {
 185   struct locale_messages_t *messages
 186     = locale->categories[LC_MESSAGES].messages;
 187
 188   switch (tok)
 189     {
 190     case tok_yesexpr:
 191       if (code->val.str.start == NULL)
 192         {
 193           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 194                     "yesexpr", "LC_MESSAGES");
 195           messages->yesexpr = "";
 196         }
 197       else
 198         messages->yesexpr = code->val.str.start;
 199       break;
 200
 201     case tok_noexpr:
 202       if (code->val.str.start == NULL)
 203         {
 204           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 205                     "noexpr", "LC_MESSAGES");
 206           messages->noexpr = "";
 207         }
 208       else
 209         messages->noexpr = code->val.str.start;
 210       break;
 211
 212     case tok_yesstr:
 213       if (code->val.str.start == NULL)
 214         {
 215           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 216                     "yesstr", "LC_MESSAGES");
 217           messages->yesstr = "";
 218         }
 219       else
 220         messages->yesstr = code->val.str.start;
 221       break;
 222
 223     case tok_nostr:
 224       if (code->val.str.start == NULL)
 225         {
 226           lr_error (lr, _("unknown character in field `%s' of category `%s'"),
 227                     "nostr", "LC_MESSAGES");
 228           messages->nostr = "";
 229         }
 230       else
 231         messages->nostr = code->val.str.start;
 232       break;
 233
 234     default:
 235       assert (! "unknown token in category `LC_MESSAGES': should not happen");
 236     }
 237 }