locale/programs/ld-measurement.c

   1 /* Copyright (C) 1998, 1999, 2000, 2001, 2002 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    The GNU C Library is free software; you can redistribute it and/or
   6    modify it under the terms of the GNU Lesser General Public
   7    License as published by the Free Software Foundation; either
   8    version 2.1 of the 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    Lesser General Public License for more details.
  14
  15    You should have received a copy of the GNU Lesser General Public
  16    License along with the GNU C Library; if not, write to the Free
  17    Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
  18    02111-1307 USA.  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 # include <config.h>
  22 #endif
  23
  24 #include <error.h>
  25 #include <langinfo.h>
  26 #include <string.h>
  27 #include <sys/uio.h>
  28
  29 #include <assert.h>
  30
  31 #include "localedef.h"
  32 #include "localeinfo.h"
  33 #include "locfile.h"
  34
  35
  36 /* The real definition of the struct for the LC_MEASUREMENT locale.  */
  37 struct locale_measurement_t
  38 {
  39   unsigned char measurement;
  40 };
  41
  42
  43 static void
  44 measurement_startup (struct linereader *lr, struct localedef_t *locale,
  45                      int ignore_content)
  46 {
  47   if (!ignore_content)
  48     locale->categories[LC_MEASUREMENT].measurement =
  49       (struct locale_measurement_t *)
  50       xcalloc (1, sizeof (struct locale_measurement_t));
  51
  52   if (lr != NULL)
  53     {
  54       lr->translate_strings = 1;
  55       lr->return_widestr = 0;
  56     }
  57 }
  58
  59
  60 void
  61 measurement_finish (struct localedef_t *locale,
  62                     const struct charmap_t *charmap)
  63 {
  64   struct locale_measurement_t *measurement =
  65     locale->categories[LC_MEASUREMENT].measurement;
  66   int nothing = 0;
  67
  68   /* Now resolve copying and also handle completely missing definitions.  */
  69   if (measurement == NULL)
  70     {
  71       /* First see whether we were supposed to copy.  If yes, find the
  72          actual definition.  */
  73       if (locale->copy_name[LC_MEASUREMENT] != NULL)
  74         {
  75           /* Find the copying locale.  This has to happen transitively since
  76              the locale we are copying from might also copying another one.  */
  77           struct localedef_t *from = locale;
  78
  79           do
  80             from = find_locale (LC_MEASUREMENT,
  81                                 from->copy_name[LC_MEASUREMENT],
  82                                 from->repertoire_name, charmap);
  83           while (from->categories[LC_MEASUREMENT].measurement == NULL
  84                  && from->copy_name[LC_MEASUREMENT] != NULL);
  85
  86           measurement = locale->categories[LC_MEASUREMENT].measurement
  87             = from->categories[LC_MEASUREMENT].measurement;
  88         }
  89
  90       /* If there is still no definition issue an warning and create an
  91          empty one.  */
  92       if (measurement == NULL)
  93         {
  94           if (! be_quiet)
  95             WITH_CUR_LOCALE (error (0, 0, _("\
  96 No definition for %s category found"), "LC_MEASUREMENT"));
  97           measurement_startup (NULL, locale, 0);
  98           measurement = locale->categories[LC_MEASUREMENT].measurement;
  99           nothing = 1;
 100         }
 101     }
 102
 103   if (measurement->measurement == 0)
 104     {
 105       if (! nothing)
 106         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 107                                 "LC_MEASUREMENT", "measurement"));
 108       /* Use as the default value the value of the i18n locale.  */
 109       measurement->measurement = 1;
 110     }
 111   else
 112     {
 113       if (measurement->measurement > 3)
 114         WITH_CUR_LOCALE (error (0, 0, _("%s: invalid value for field `%s'"),
 115                                 "LC_MEASUREMENT", "measurement"));
 116     }
 117 }
 118
 119
 120 void
 121 measurement_output (struct localedef_t *locale,
 122                     const struct charmap_t *charmap, const char *output_path)
 123 {
 124   struct locale_measurement_t *measurement =
 125     locale->categories[LC_MEASUREMENT].measurement;
 126   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 127   struct locale_file data;
 128   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 129   size_t cnt = 0;
 130
 131   data.magic = LIMAGIC (LC_MEASUREMENT);
 132   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT);
 133   iov[cnt].iov_base = (void *) &data;
 134   iov[cnt].iov_len = sizeof (data);
 135   ++cnt;
 136
 137   iov[cnt].iov_base = (void *) idx;
 138   iov[cnt].iov_len = sizeof (idx);
 139   ++cnt;
 140
 141   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 142   iov[cnt].iov_base = &measurement->measurement;
 143   iov[cnt].iov_len = 1;
 144   ++cnt;
 145
 146   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 147   iov[cnt].iov_base = (void *) charmap->code_set_name;
 148   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 149   ++cnt;
 150
 151   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 152
 153   write_locale_data (output_path, "LC_MEASUREMENT",
 154                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT), iov);
 155 }
 156
 157
 158 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 159 void
 160 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 161                   const struct charmap_t *charmap, const char *repertoire_name,
 162                   int ignore_content)
 163 {
 164   struct locale_measurement_t *measurement;
 165   struct token *now;
 166   struct token *arg;
 167   enum token_t nowtok;
 168
 169   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 170   lr_ignore_rest (ldfile, 1);
 171
 172   do
 173     {
 174       now = lr_token (ldfile, charmap, result, NULL, verbose);
 175       nowtok = now->tok;
 176     }
 177   while (nowtok == tok_eol);
 178
 179   /* If we see `copy' now we are almost done.  */
 180   if (nowtok == tok_copy)
 181     {
 182       handle_copy (ldfile, charmap, repertoire_name, result,
 183                    tok_lc_measurement, LC_MEASUREMENT, "LC_MEASUREMENT",
 184                    ignore_content);
 185       return;
 186     }
 187
 188   /* Prepare the data structures.  */
 189   measurement_startup (ldfile, result, ignore_content);
 190   measurement = result->categories[LC_MEASUREMENT].measurement;
 191
 192   while (1)
 193     {
 194       /* Of course we don't proceed beyond the end of file.  */
 195       if (nowtok == tok_eof)
 196         break;
 197
 198       /* Ingore empty lines.  */
 199       if (nowtok == tok_eol)
 200         {
 201           now = lr_token (ldfile, charmap, result, NULL, verbose);
 202           nowtok = now->tok;
 203           continue;
 204         }
 205
 206       switch (nowtok)
 207         {
 208 #define INT_ELEM(cat) \
 209         case tok_##cat:                                                       \
 210           /* Ignore the rest of the line if we don't need the input of        \
 211              this line.  */                                                   \
 212           if (ignore_content)                                                 \
 213             {                                                                 \
 214               lr_ignore_rest (ldfile, 0);                                     \
 215               break;                                                          \
 216             }                                                                 \
 217                                                                               \
 218           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 219           if (arg->tok != tok_number)                                         \
 220             goto err_label;                                                   \
 221           else if (measurement->cat != 0)                                     \
 222             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 223                       "LC_MEASUREMENT", #cat);                                \
 224           else if (!ignore_content)                                           \
 225             measurement->cat = arg->val.num;                                  \
 226           break
 227
 228           INT_ELEM (measurement);
 229
 230         case tok_end:
 231           /* Next we assume `LC_MEASUREMENT'.  */
 232           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 233           if (arg->tok == tok_eof)
 234             break;
 235           if (arg->tok == tok_eol)
 236             lr_error (ldfile, _("%s: incomplete `END' line"),
 237                       "LC_MEASUREMENT");
 238           else if (arg->tok != tok_lc_measurement)
 239             lr_error (ldfile, _("\
 240 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 241           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 242           return;
 243
 244         default:
 245         err_label:
 246           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 247         }
 248
 249       /* Prepare for the next round.  */
 250       now = lr_token (ldfile, charmap, result, NULL, verbose);
 251       nowtok = now->tok;
 252     }
 253
 254   /* When we come here we reached the end of the file.  */
 255   lr_error (ldfile, _("%s: premature end of file"),
 256             "LC_MEASUREMENT");
 257 }