locale/programs/ld-measurement.c

   1 /* Copyright (C) 1998-2013 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, see <http://www.gnu.org/licenses/>.  */
  17
  18 #ifdef HAVE_CONFIG_H
  19 # include <config.h>
  20 #endif
  21
  22 #include <error.h>
  23 #include <langinfo.h>
  24 #include <string.h>
  25 #include <stdint.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 locale_file file;
 126
 127   init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 128   add_locale_char (&file, measurement->measurement);
 129   add_locale_string (&file, charmap->code_set_name);
 130   write_locale_data (output_path, LC_MEASUREMENT, "LC_MEASUREMENT", &file);
 131 }
 132
 133
 134 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 135 void
 136 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 137                   const struct charmap_t *charmap, const char *repertoire_name,
 138                   int ignore_content)
 139 {
 140   struct locale_measurement_t *measurement;
 141   struct token *now;
 142   struct token *arg;
 143   enum token_t nowtok;
 144
 145   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 146   lr_ignore_rest (ldfile, 1);
 147
 148   do
 149     {
 150       now = lr_token (ldfile, charmap, result, NULL, verbose);
 151       nowtok = now->tok;
 152     }
 153   while (nowtok == tok_eol);
 154
 155   /* If we see `copy' now we are almost done.  */
 156   if (nowtok == tok_copy)
 157     {
 158       handle_copy (ldfile, charmap, repertoire_name, result,
 159                    tok_lc_measurement, LC_MEASUREMENT, "LC_MEASUREMENT",
 160                    ignore_content);
 161       return;
 162     }
 163
 164   /* Prepare the data structures.  */
 165   measurement_startup (ldfile, result, ignore_content);
 166   measurement = result->categories[LC_MEASUREMENT].measurement;
 167
 168   while (1)
 169     {
 170       /* Of course we don't proceed beyond the end of file.  */
 171       if (nowtok == tok_eof)
 172         break;
 173
 174       /* Ingore empty lines.  */
 175       if (nowtok == tok_eol)
 176         {
 177           now = lr_token (ldfile, charmap, result, NULL, verbose);
 178           nowtok = now->tok;
 179           continue;
 180         }
 181
 182       switch (nowtok)
 183         {
 184 #define INT_ELEM(cat) \
 185         case tok_##cat:                                                       \
 186           /* Ignore the rest of the line if we don't need the input of        \
 187              this line.  */                                                   \
 188           if (ignore_content)                                                 \
 189             {                                                                 \
 190               lr_ignore_rest (ldfile, 0);                                     \
 191               break;                                                          \
 192             }                                                                 \
 193                                                                               \
 194           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 195           if (arg->tok != tok_number)                                         \
 196             goto err_label;                                                   \
 197           else if (measurement->cat != 0)                                     \
 198             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 199                       "LC_MEASUREMENT", #cat);                                \
 200           else if (!ignore_content)                                           \
 201             measurement->cat = arg->val.num;                                  \
 202           break
 203
 204           INT_ELEM (measurement);
 205
 206         case tok_end:
 207           /* Next we assume `LC_MEASUREMENT'.  */
 208           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 209           if (arg->tok == tok_eof)
 210             break;
 211           if (arg->tok == tok_eol)
 212             lr_error (ldfile, _("%s: incomplete `END' line"),
 213                       "LC_MEASUREMENT");
 214           else if (arg->tok != tok_lc_measurement)
 215             lr_error (ldfile, _("\
 216 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 217           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 218           return;
 219
 220         default:
 221         err_label:
 222           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 223         }
 224
 225       /* Prepare for the next round.  */
 226       now = lr_token (ldfile, charmap, result, NULL, verbose);
 227       nowtok = now->tok;
 228     }
 229
 230   /* When we come here we reached the end of the file.  */
 231   lr_error (ldfile, _("%s: premature end of file"),
 232             "LC_MEASUREMENT");
 233 }