locale/programs/ld-measurement.c

   1 /* Copyright (C) 1998-2023 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published
   6    by the Free Software Foundation; version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include <config.h>
  19 #endif
  20
  21 #include <langinfo.h>
  22 #include <string.h>
  23 #include <stdint.h>
  24 #include <sys/uio.h>
  25
  26 #include <assert.h>
  27
  28 #include "localedef.h"
  29 #include "localeinfo.h"
  30 #include "locfile.h"
  31
  32
  33 /* The real definition of the struct for the LC_MEASUREMENT locale.  */
  34 struct locale_measurement_t
  35 {
  36   unsigned char measurement;
  37 };
  38
  39
  40 static void
  41 measurement_startup (struct linereader *lr, struct localedef_t *locale,
  42                      int ignore_content)
  43 {
  44   if (!ignore_content)
  45     locale->categories[LC_MEASUREMENT].measurement =
  46       (struct locale_measurement_t *)
  47       xcalloc (1, sizeof (struct locale_measurement_t));
  48
  49   if (lr != NULL)
  50     {
  51       lr->translate_strings = 1;
  52       lr->return_widestr = 0;
  53     }
  54 }
  55
  56
  57 void
  58 measurement_finish (struct localedef_t *locale,
  59                     const struct charmap_t *charmap)
  60 {
  61   struct locale_measurement_t *measurement =
  62     locale->categories[LC_MEASUREMENT].measurement;
  63   int nothing = 0;
  64
  65   /* Now resolve copying and also handle completely missing definitions.  */
  66   if (measurement == NULL)
  67     {
  68       /* First see whether we were supposed to copy.  If yes, find the
  69          actual definition.  */
  70       if (locale->copy_name[LC_MEASUREMENT] != NULL)
  71         {
  72           /* Find the copying locale.  This has to happen transitively since
  73              the locale we are copying from might also copying another one.  */
  74           struct localedef_t *from = locale;
  75
  76           do
  77             from = find_locale (LC_MEASUREMENT,
  78                                 from->copy_name[LC_MEASUREMENT],
  79                                 from->repertoire_name, charmap);
  80           while (from->categories[LC_MEASUREMENT].measurement == NULL
  81                  && from->copy_name[LC_MEASUREMENT] != NULL);
  82
  83           measurement = locale->categories[LC_MEASUREMENT].measurement
  84             = from->categories[LC_MEASUREMENT].measurement;
  85         }
  86
  87       /* If there is still no definition issue an warning and create an
  88          empty one.  */
  89       if (measurement == NULL)
  90         {
  91           record_warning (_("\
  92 No definition for %s category found"), "LC_MEASUREMENT");
  93           measurement_startup (NULL, locale, 0);
  94           measurement = locale->categories[LC_MEASUREMENT].measurement;
  95           nothing = 1;
  96         }
  97     }
  98
  99   if (measurement->measurement == 0)
 100     {
 101       if (! nothing)
 102         record_error (0, 0, _("%s: field `%s' not defined"),
 103                       "LC_MEASUREMENT", "measurement");
 104       /* Use as the default value the value of the i18n locale.  */
 105       measurement->measurement = 1;
 106     }
 107   else
 108     {
 109       if (measurement->measurement > 3)
 110         record_error (0, 0, _("%s: invalid value for field `%s'"),
 111                       "LC_MEASUREMENT", "measurement");
 112     }
 113 }
 114
 115
 116 void
 117 measurement_output (struct localedef_t *locale,
 118                     const struct charmap_t *charmap, const char *output_path)
 119 {
 120   struct locale_measurement_t *measurement =
 121     locale->categories[LC_MEASUREMENT].measurement;
 122   struct locale_file file;
 123
 124   init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 125   add_locale_char (&file, measurement->measurement);
 126   add_locale_string (&file, charmap->code_set_name);
 127   write_locale_data (output_path, LC_MEASUREMENT, "LC_MEASUREMENT", &file);
 128 }
 129
 130
 131 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 132 void
 133 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 134                   const struct charmap_t *charmap, const char *repertoire_name,
 135                   int ignore_content)
 136 {
 137   struct locale_measurement_t *measurement;
 138   struct token *now;
 139   struct token *arg;
 140   enum token_t nowtok;
 141
 142   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 143   lr_ignore_rest (ldfile, 1);
 144
 145   do
 146     {
 147       now = lr_token (ldfile, charmap, result, NULL, verbose);
 148       nowtok = now->tok;
 149     }
 150   while (nowtok == tok_eol);
 151
 152   /* If we see `copy' now we are almost done.  */
 153   if (nowtok == tok_copy)
 154     {
 155       handle_copy (ldfile, charmap, repertoire_name, result,
 156                    tok_lc_measurement, LC_MEASUREMENT, "LC_MEASUREMENT",
 157                    ignore_content);
 158       return;
 159     }
 160
 161   /* Prepare the data structures.  */
 162   measurement_startup (ldfile, result, ignore_content);
 163   measurement = result->categories[LC_MEASUREMENT].measurement;
 164
 165   while (1)
 166     {
 167       /* Of course we don't proceed beyond the end of file.  */
 168       if (nowtok == tok_eof)
 169         break;
 170
 171       /* Ingore empty lines.  */
 172       if (nowtok == tok_eol)
 173         {
 174           now = lr_token (ldfile, charmap, result, NULL, verbose);
 175           nowtok = now->tok;
 176           continue;
 177         }
 178
 179       switch (nowtok)
 180         {
 181 #define INT_ELEM(cat) \
 182         case tok_##cat:                                                       \
 183           /* Ignore the rest of the line if we don't need the input of        \
 184              this line.  */                                                   \
 185           if (ignore_content)                                                 \
 186             {                                                                 \
 187               lr_ignore_rest (ldfile, 0);                                     \
 188               break;                                                          \
 189             }                                                                 \
 190                                                                               \
 191           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 192           if (arg->tok != tok_number)                                         \
 193             goto err_label;                                                   \
 194           else if (measurement->cat != 0)                                     \
 195             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 196                       "LC_MEASUREMENT", #cat);                                \
 197           else if (!ignore_content)                                           \
 198             measurement->cat = arg->val.num;                                  \
 199           break
 200
 201           INT_ELEM (measurement);
 202
 203         case tok_end:
 204           /* Next we assume `LC_MEASUREMENT'.  */
 205           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 206           if (arg->tok == tok_eof)
 207             break;
 208           if (arg->tok == tok_eol)
 209             lr_error (ldfile, _("%s: incomplete `END' line"),
 210                       "LC_MEASUREMENT");
 211           else if (arg->tok != tok_lc_measurement)
 212             lr_error (ldfile, _("\
 213 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 214           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 215           return;
 216
 217         default:
 218         err_label:
 219           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 220         }
 221
 222       /* Prepare for the next round.  */
 223       now = lr_token (ldfile, charmap, result, NULL, verbose);
 224       nowtok = now->tok;
 225     }
 226
 227   /* When we come here we reached the end of the file.  */
 228   lr_error (ldfile, _("%s: premature end of file"),
 229             "LC_MEASUREMENT");
 230 }