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 version 2 as
   7    published by the Free Software Foundation.
   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, write to the Free Software Foundation,
  16    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  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 <sys/uio.h>
  26
  27 #include <assert.h>
  28
  29 #include "localedef.h"
  30 #include "localeinfo.h"
  31 #include "locfile.h"
  32
  33
  34 /* The real definition of the struct for the LC_MEASUREMENT locale.  */
  35 struct locale_measurement_t
  36 {
  37   unsigned char measurement;
  38 };
  39
  40
  41 static void
  42 measurement_startup (struct linereader *lr, struct localedef_t *locale,
  43                      int ignore_content)
  44 {
  45   if (!ignore_content)
  46     locale->categories[LC_MEASUREMENT].measurement =
  47       (struct locale_measurement_t *)
  48       xcalloc (1, sizeof (struct locale_measurement_t));
  49
  50   if (lr != NULL)
  51     {
  52       lr->translate_strings = 1;
  53       lr->return_widestr = 0;
  54     }
  55 }
  56
  57
  58 void
  59 measurement_finish (struct localedef_t *locale,
  60                     const 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           if (! be_quiet)
  93             WITH_CUR_LOCALE (error (0, 0, _("\
  94 No definition for %s category found"), "LC_MEASUREMENT"));
  95           measurement_startup (NULL, locale, 0);
  96           measurement = locale->categories[LC_MEASUREMENT].measurement;
  97           nothing = 1;
  98         }
  99     }
 100
 101   if (measurement->measurement == 0)
 102     {
 103       if (! nothing)
 104         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 105                                 "LC_MEASUREMENT", "measurement"));
 106       /* Use as the default value the value of the i18n locale.  */
 107       measurement->measurement = 1;
 108     }
 109   else
 110     {
 111       if (measurement->measurement > 3)
 112         WITH_CUR_LOCALE (error (0, 0, _("%s: invalid value for field `%s'"),
 113                                 "LC_MEASUREMENT", "measurement"));
 114     }
 115 }
 116
 117
 118 void
 119 measurement_output (struct localedef_t *locale,
 120                     const struct charmap_t *charmap, const char *output_path)
 121 {
 122   struct locale_measurement_t *measurement =
 123     locale->categories[LC_MEASUREMENT].measurement;
 124   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 125   struct locale_file data;
 126   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT)];
 127   size_t cnt = 0;
 128
 129   data.magic = LIMAGIC (LC_MEASUREMENT);
 130   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT);
 131   iov[cnt].iov_base = (void *) &data;
 132   iov[cnt].iov_len = sizeof (data);
 133   ++cnt;
 134
 135   iov[cnt].iov_base = (void *) idx;
 136   iov[cnt].iov_len = sizeof (idx);
 137   ++cnt;
 138
 139   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 140   iov[cnt].iov_base = &measurement->measurement;
 141   iov[cnt].iov_len = 1;
 142   ++cnt;
 143
 144   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 145   iov[cnt].iov_base = (void *) charmap->code_set_name;
 146   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 147   ++cnt;
 148
 149   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT));
 150
 151   write_locale_data (output_path, LC_MEASUREMENT, "LC_MEASUREMENT",
 152                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_MEASUREMENT), iov);
 153 }
 154
 155
 156 /* The parser for the LC_MEASUREMENT section of the locale definition.  */
 157 void
 158 measurement_read (struct linereader *ldfile, struct localedef_t *result,
 159                   const struct charmap_t *charmap, const char *repertoire_name,
 160                   int ignore_content)
 161 {
 162   struct locale_measurement_t *measurement;
 163   struct token *now;
 164   struct token *arg;
 165   enum token_t nowtok;
 166
 167   /* The rest of the line containing `LC_MEASUREMENT' must be free.  */
 168   lr_ignore_rest (ldfile, 1);
 169
 170   do
 171     {
 172       now = lr_token (ldfile, charmap, result, NULL, verbose);
 173       nowtok = now->tok;
 174     }
 175   while (nowtok == tok_eol);
 176
 177   /* If we see `copy' now we are almost done.  */
 178   if (nowtok == tok_copy)
 179     {
 180       handle_copy (ldfile, charmap, repertoire_name, result,
 181                    tok_lc_measurement, LC_MEASUREMENT, "LC_MEASUREMENT",
 182                    ignore_content);
 183       return;
 184     }
 185
 186   /* Prepare the data structures.  */
 187   measurement_startup (ldfile, result, ignore_content);
 188   measurement = result->categories[LC_MEASUREMENT].measurement;
 189
 190   while (1)
 191     {
 192       /* Of course we don't proceed beyond the end of file.  */
 193       if (nowtok == tok_eof)
 194         break;
 195
 196       /* Ingore empty lines.  */
 197       if (nowtok == tok_eol)
 198         {
 199           now = lr_token (ldfile, charmap, result, NULL, verbose);
 200           nowtok = now->tok;
 201           continue;
 202         }
 203
 204       switch (nowtok)
 205         {
 206 #define INT_ELEM(cat) \
 207         case tok_##cat:                                                       \
 208           /* Ignore the rest of the line if we don't need the input of        \
 209              this line.  */                                                   \
 210           if (ignore_content)                                                 \
 211             {                                                                 \
 212               lr_ignore_rest (ldfile, 0);                                     \
 213               break;                                                          \
 214             }                                                                 \
 215                                                                               \
 216           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 217           if (arg->tok != tok_number)                                         \
 218             goto err_label;                                                   \
 219           else if (measurement->cat != 0)                                     \
 220             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 221                       "LC_MEASUREMENT", #cat);                                \
 222           else if (!ignore_content)                                           \
 223             measurement->cat = arg->val.num;                                  \
 224           break
 225
 226           INT_ELEM (measurement);
 227
 228         case tok_end:
 229           /* Next we assume `LC_MEASUREMENT'.  */
 230           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 231           if (arg->tok == tok_eof)
 232             break;
 233           if (arg->tok == tok_eol)
 234             lr_error (ldfile, _("%s: incomplete `END' line"),
 235                       "LC_MEASUREMENT");
 236           else if (arg->tok != tok_lc_measurement)
 237             lr_error (ldfile, _("\
 238 %1$s: definition does not end with `END %1$s'"), "LC_MEASUREMENT");
 239           lr_ignore_rest (ldfile, arg->tok == tok_lc_measurement);
 240           return;
 241
 242         default:
 243         err_label:
 244           SYNTAX_ERROR (_("%s: syntax error"), "LC_MEASUREMENT");
 245         }
 246
 247       /* Prepare for the next round.  */
 248       now = lr_token (ldfile, charmap, result, NULL, verbose);
 249       nowtok = now->tok;
 250     }
 251
 252   /* When we come here we reached the end of the file.  */
 253   lr_error (ldfile, _("%s: premature end of file"),
 254             "LC_MEASUREMENT");
 255 }