locale/programs/ld-measurement.c

   1 /* Copyright (C) 1998,1999,2000,2001,2002,2005 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published
   7    by the Free Software Foundation; version 2 of the License, or
   8    (at your option) any later version.
   9
  10    This program 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
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program; if not, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <error.h>
  24 #include <langinfo.h>
  25 #include <string.h>
  26 #include <sys/uio.h>
  27
  28 #include <assert.h>
  29
  30 #include "localedef.h"
  31 #include "localeinfo.h"
  32 #include "locfile.h"
  33
  34
  35 /* The real definition of the struct for the LC_MEASUREMENT locale.  */
  36 struct locale_measurement_t
  37 {
  38   unsigned char measurement;
  39 };
  40
  41
  42 static void
  43 measurement_startup (struct linereader *lr, struct localedef_t *locale,
  44                      int ignore_content)
  45 {
  46   if (!ignore_content)
  47     locale->categories[LC_MEASUREMENT].measurement =
  48       (struct locale_measurement_t *)
  49       xcalloc (1, sizeof (struct locale_measurement_t));
  50
  51   if (lr != NULL)
  52     {
  53       lr->translate_strings = 1;
  54       lr->return_widestr = 0;
  55     }
  56 }
  57
  58
  59 void
  60 measurement_finish (struct localedef_t *locale,
  61                     const struct charmap_t *charmap)
  62 {
  63   struct locale_measurement_t *measurement =
  64     locale->categories[LC_MEASUREMENT].measurement;
  65   int nothing = 0;
  66
  67   /* Now resolve copying and also handle completely missing definitions.  */
  68   if (measurement == NULL)
  69     {
  70       /* First see whether we were supposed to copy.  If yes, find the
  71          actual definition.  */
  72       if (locale->copy_name[LC_MEASUREMENT] != NULL)
  73         {
  74           /* Find the copying locale.  This has to happen transitively since
  75              the locale we are copying from might also copying another one.  */
  76           struct localedef_t *from = locale;
  77
  78           do
  79             from = find_locale (LC_MEASUREMENT,
  80                                 from->copy_name[LC_MEASUREMENT],
  81                                 from->repertoire_name, charmap);
  82           while (from->categories[LC_MEASUREMENT].measurement == NULL
  83                  && from->copy_name[LC_MEASUREMENT] != NULL);
  84
  85           measurement = locale->categories[LC_MEASUREMENT].measurement
  86             = from->categories[LC_MEASUREMENT].measurement;
  87         }
  88
  89       /* If there is still no definition issue an warning and create an
  90          empty one.  */
  91       if (measurement == NULL)
  92         {
  93           if (! be_quiet)
  94             WITH_CUR_LOCALE (error (0, 0, _("\
  95 No definition for %s category found"), "LC_MEASUREMENT"));
  96           measurement_startup (NULL, locale, 0);
  97           measurement = locale->categories[LC_MEASUREMENT].measurement;
  98           nothing = 1;
  99         }
 100     }
 101
 102   if (measurement->measurement == 0)
 103     {
 104       if (! nothing)
 105         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 106                                 "LC_MEASUREMENT", "measurement"));
 107       /* Use as the default value the value of the i18n locale.  */
 108       measurement->measurement = 1;
 109     }
 110   else
 111     {
 112       if (measurement->measurement > 3)
 113         WITH_CUR_LOCALE (error (0, 0, _("%s: invalid value for field `%s'"),
 114                                 "LC_MEASUREMENT", "measurement"));
 115     }
 116 }
 117
 118
 119 void
 120 measurement_output (struct localedef_t *locale,
 121                     const struct charmap_t *charmap, const char *output_path)
 122 {
 123   struct locale_measurement_t *measurement =
 124     locale->categories[LC_MEASUREMENT].measurement;
 125   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 126   struct locale_file data;
 127   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 128   size_t cnt = 0;
 129
 130   data.magic = LIMAGIC (LC_MEASUREMENT);
 131   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT);
 132   iov[cnt].iov_base = (void *) &data;
 133   iov[cnt].iov_len = sizeof (data);
 134   ++cnt;
 135
 136   iov[cnt].iov_base = (void *) idx;
 137   iov[cnt].iov_len = sizeof (idx);
 138   ++cnt;
 139
 140   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 141   iov[cnt].iov_base = &measurement->measurement;
 142   iov[cnt].iov_len = 1;
 143   ++cnt;
 144
 145   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 146   iov[cnt].iov_base = (void *) charmap->code_set_name;
 147   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 148   ++cnt;
 149
 150   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 151
 152   write_locale_data (output_path, LC_MEASUREMENT, "LC_MEASUREMENT",
 153                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT), iov);
 154 }
 155
 156
 157 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 158 void
 159 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 160                   const struct charmap_t *charmap, const char *repertoire_name,
 161                   int ignore_content)
 162 {
 163   struct locale_measurement_t *measurement;
 164   struct token *now;
 165   struct token *arg;
 166   enum token_t nowtok;
 167
 168   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 169   lr_ignore_rest (ldfile, 1);
 170
 171   do
 172     {
 173       now = lr_token (ldfile, charmap, result, NULL, verbose);
 174       nowtok = now->tok;
 175     }
 176   while (nowtok == tok_eol);
 177
 178   /* If we see `copy' now we are almost done.  */
 179   if (nowtok == tok_copy)
 180     {
 181       handle_copy (ldfile, charmap, repertoire_name, result,
 182                    tok_lc_measurement, LC_MEASUREMENT, "LC_MEASUREMENT",
 183                    ignore_content);
 184       return;
 185     }
 186
 187   /* Prepare the data structures.  */
 188   measurement_startup (ldfile, result, ignore_content);
 189   measurement = result->categories[LC_MEASUREMENT].measurement;
 190
 191   while (1)
 192     {
 193       /* Of course we don't proceed beyond the end of file.  */
 194       if (nowtok == tok_eof)
 195         break;
 196
 197       /* Ingore empty lines.  */
 198       if (nowtok == tok_eol)
 199         {
 200           now = lr_token (ldfile, charmap, result, NULL, verbose);
 201           nowtok = now->tok;
 202           continue;
 203         }
 204
 205       switch (nowtok)
 206         {
 207 #define INT_ELEM(cat) \
 208         case tok_##cat:                                                       \
 209           /* Ignore the rest of the line if we don't need the input of        \
 210              this line.  */                                                   \
 211           if (ignore_content)                                                 \
 212             {                                                                 \
 213               lr_ignore_rest (ldfile, 0);                                     \
 214               break;                                                          \
 215             }                                                                 \
 216                                                                               \
 217           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 218           if (arg->tok != tok_number)                                         \
 219             goto err_label;                                                   \
 220           else if (measurement->cat != 0)                                     \
 221             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 222                       "LC_MEASUREMENT", #cat);                                \
 223           else if (!ignore_content)                                           \
 224             measurement->cat = arg->val.num;                                  \
 225           break
 226
 227           INT_ELEM (measurement);
 228
 229         case tok_end:
 230           /* Next we assume `LC_MEASUREMENT'.  */
 231           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 232           if (arg->tok == tok_eof)
 233             break;
 234           if (arg->tok == tok_eol)
 235             lr_error (ldfile, _("%s: incomplete `END' line"),
 236                       "LC_MEASUREMENT");
 237           else if (arg->tok != tok_lc_measurement)
 238             lr_error (ldfile, _("\
 239 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 240           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 241           return;
 242
 243         default:
 244         err_label:
 245           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 246         }
 247
 248       /* Prepare for the next round.  */
 249       now = lr_token (ldfile, charmap, result, NULL, verbose);
 250       nowtok = now->tok;
 251     }
 252
 253   /* When we come here we reached the end of the file.  */
 254   lr_error (ldfile, _("%s: premature end of file"),
 255             "LC_MEASUREMENT");
 256 }