locale/programs/ld-measurement.c

   1 /* Copyright (C) 1998, 1999 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 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 <error.h>
  25 #include <langinfo.h>
  26 #include <string.h>
  27 #include <sys/uio.h>
  28
  29 #include <assert.h>
  30
  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, struct charmap_t *charmap)
  61 {
  62   struct locale_measurement_t *measurement =
  63     locale->categories[LC_MEASUREMENT].measurement;
  64   int nothing = 0;
  65
  66   /* Now resolve copying and also handle completely missing definitions.  */
  67   if (measurement == NULL)
  68     {
  69       /* First see whether we were supposed to copy.  If yes, find the
  70          actual definition.  */
  71       if (locale->copy_name[LC_MEASUREMENT] != NULL)
  72         {
  73           /* Find the copying locale.  This has to happen transitively since
  74              the locale we are copying from might also copying another one.  */
  75           struct localedef_t *from = locale;
  76
  77           do
  78             from = find_locale (LC_MEASUREMENT,
  79                                 from->copy_name[LC_MEASUREMENT],
  80                                 from->repertoire_name, charmap);
  81           while (from->categories[LC_MEASUREMENT].measurement == NULL
  82                  && from->copy_name[LC_MEASUREMENT] != NULL);
  83
  84           measurement = locale->categories[LC_MEASUREMENT].measurement
  85             = from->categories[LC_MEASUREMENT].measurement;
  86         }
  87
  88       /* If there is still no definition issue an warning and create an
  89          empty one.  */
  90       if (measurement == NULL)
  91         {
  92           error (0, 0, _("No definition for %s category found"),
  93                  "LC_MEASUREMENT");
  94           measurement_startup (NULL, locale, 0);
  95           measurement = locale->categories[LC_MEASUREMENT].measurement;
  96           nothing = 1;
  97         }
  98     }
  99
 100   if (measurement->measurement == 0)
 101     {
 102       if (! nothing)
 103         error (0, 0, _("%s: field `%s' not defined"),
 104                "LC_MEASUREMENT", "measurement");
 105       /* Use as the default value the value of the i18n locale.  */
 106       measurement->measurement = 1;
 107     }
 108   else
 109     {
 110       if (measurement->measurement > 3)
 111         error (0, 0, _("%s: invalid value for field `%s'"),
 112                "LC_MEASUREMENT", "meassurement");
 113     }
 114 }
 115
 116
 117 void
 118 measurement_output (struct localedef_t *locale, struct charmap_t *charmap,
 119                     const char *output_path)
 120 {
 121   struct locale_measurement_t *measurement =
 122     locale->categories[LC_MEASUREMENT].measurement;
 123   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 124   struct locale_file data;
 125   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 126   size_t cnt = 0;
 127
 128   data.magic = LIMAGIC (LC_MEASUREMENT);
 129   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT);
 130   iov[cnt].iov_base = (void *) &data;
 131   iov[cnt].iov_len = sizeof (data);
 132   ++cnt;
 133
 134   iov[cnt].iov_base = (void *) idx;
 135   iov[cnt].iov_len = sizeof (idx);
 136   ++cnt;
 137
 138   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 139   iov[cnt].iov_base = &measurement->measurement;
 140   iov[cnt].iov_len = 1;
 141   ++cnt;
 142
 143   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 144
 145   write_locale_data (output_path, "LC_MEASUREMENT",
 146                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT), iov);
 147 }
 148
 149
 150 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 151 void
 152 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 153                   struct charmap_t *charmap, const char *repertoire_name,
 154                   int ignore_content)
 155 {
 156   struct repertoire_t *repertoire = NULL;
 157   struct locale_measurement_t *measurement;
 158   struct token *now;
 159   struct token *arg;
 160   enum token_t nowtok;
 161
 162   /* Get the repertoire we have to use.  */
 163   if (repertoire_name != NULL)
 164     repertoire = repertoire_read (repertoire_name);
 165
 166   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 167   lr_ignore_rest (ldfile, 1);
 168
 169   do
 170     {
 171       now = lr_token (ldfile, charmap, NULL);
 172       nowtok = now->tok;
 173     }
 174   while (nowtok == tok_eol);
 175
 176   /* If we see `copy' now we are almost done.  */
 177   if (nowtok == tok_copy)
 178     {
 179       handle_copy (ldfile, charmap, repertoire, result, tok_lc_measurement,
 180                    LC_MEASUREMENT, "LC_MEASUREMENT", ignore_content);
 181       return;
 182     }
 183
 184   /* Prepare the data structures.  */
 185   measurement_startup (ldfile, result, ignore_content);
 186   measurement = result->categories[LC_MEASUREMENT].measurement;
 187
 188   while (1)
 189     {
 190       /* Of course we don't proceed beyond the end of file.  */
 191       if (nowtok == tok_eof)
 192         break;
 193
 194       /* Ingore empty lines.  */
 195       if (nowtok == tok_eol)
 196         {
 197           now = lr_token (ldfile, charmap, NULL);
 198           nowtok = now->tok;
 199           continue;
 200         }
 201
 202       switch (nowtok)
 203         {
 204 #define INT_ELEM(cat) \
 205         case tok_##cat:                                                       \
 206           /* Ignore the rest of the line if we don't need the input of        \
 207              this line.  */                                                   \
 208           if (ignore_content)                                                 \
 209             {                                                                 \
 210               lr_ignore_rest (ldfile, 0);                                     \
 211               break;                                                          \
 212             }                                                                 \
 213                                                                               \
 214           arg = lr_token (ldfile, charmap, NULL);                             \
 215           if (arg->tok != tok_number)                                         \
 216             goto err_label;                                                   \
 217           else if (measurement->cat != 0)                                     \
 218             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 219                       "LC_MEASUREMENT", #cat);                                \
 220           else if (!ignore_content)                                           \
 221             measurement->cat = arg->val.num;                                  \
 222           break
 223
 224           INT_ELEM (measurement);
 225
 226         case tok_end:
 227           /* Next we assume `LC_MEASUREMENT'.  */
 228           arg = lr_token (ldfile, charmap, NULL);
 229           if (arg->tok == tok_eof)
 230             break;
 231           if (arg->tok == tok_eol)
 232             lr_error (ldfile, _("%s: incomplete `END' line"),
 233                       "LC_MEASUREMENT");
 234           else if (arg->tok != tok_lc_measurement)
 235             lr_error (ldfile, _("\
 236 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 237           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 238           return;
 239
 240         default:
 241         err_label:
 242           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 243         }
 244
 245       /* Prepare for the next round.  */
 246       now = lr_token (ldfile, charmap, NULL);
 247       nowtok = now->tok;
 248     }
 249
 250   /* When we come here we reached the end of the file.  */
 251   lr_error (ldfile, _("%s: premature end of file"),
 252             "LC_MEASUREMENT");
 253 }