locale/programs/ld-numeric.c

   1 /* Copyright (C) 1995-2002,2005,2006 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.
   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 <langinfo.h>
  23 #include <string.h>
  24 #include <sys/uio.h>
  25
  26 #include <assert.h>
  27
  28 #include "localedef.h"
  29 #include "linereader.h"
  30 #include "localeinfo.h"
  31 #include "locfile.h"
  32
  33
  34 /* The real definition of the struct for the LC_NUMERIC locale.  */
  35 struct locale_numeric_t
  36 {
  37   const char *decimal_point;
  38   const char *thousands_sep;
  39   char *grouping;
  40   size_t grouping_len;
  41   uint32_t decimal_point_wc;
  42   uint32_t thousands_sep_wc;
  43 };
  44
  45
  46 static void
  47 numeric_startup (struct linereader *lr, struct localedef_t *locale,
  48                  int ignore_content)
  49 {
  50   if (!ignore_content)
  51     {
  52       locale->categories[LC_NUMERIC].numeric =
  53         (struct locale_numeric_t *) xcalloc (1,
  54                                              sizeof (struct locale_numeric_t));
  55     }
  56
  57   if (lr != NULL)
  58     {
  59       lr->translate_strings = 1;
  60       lr->return_widestr = 0;
  61     }
  62 }
  63
  64
  65 void
  66 numeric_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  67 {
  68   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  69   int nothing = 0;
  70
  71   /* Now resolve copying and also handle completely missing definitions.  */
  72   if (numeric == NULL)
  73     {
  74       /* First see whether we were supposed to copy.  If yes, find the
  75          actual definition.  */
  76       if (locale->copy_name[LC_NUMERIC] != NULL)
  77         {
  78           /* Find the copying locale.  This has to happen transitively since
  79              the locale we are copying from might also copying another one.  */
  80           struct localedef_t *from = locale;
  81
  82           do
  83             from = find_locale (LC_NUMERIC, from->copy_name[LC_NUMERIC],
  84                                 from->repertoire_name, charmap);
  85           while (from->categories[LC_NUMERIC].numeric == NULL
  86                  && from->copy_name[LC_NUMERIC] != NULL);
  87
  88           numeric = locale->categories[LC_NUMERIC].numeric
  89             = from->categories[LC_NUMERIC].numeric;
  90         }
  91
  92       /* If there is still no definition issue an warning and create an
  93          empty one.  */
  94       if (numeric == NULL)
  95         {
  96           if (! be_quiet)
  97             WITH_CUR_LOCALE (error (0, 0, _("\
  98 No definition for %s category found"), "LC_NUMERIC"));
  99           numeric_startup (NULL, locale, 0);
 100           numeric = locale->categories[LC_NUMERIC].numeric;
 101           nothing = 1;
 102         }
 103     }
 104
 105   /* The decimal point must not be empty.  This is not said explicitly
 106      in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
 107      != "".  */
 108   if (numeric->decimal_point == NULL)
 109     {
 110       if (! be_quiet && ! nothing)
 111         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 112                                 "LC_NUMERIC", "decimal_point"));
 113       numeric->decimal_point = ".";
 114     }
 115   else if (numeric->decimal_point[0] == '\0' && ! be_quiet && ! nothing)
 116     {
 117       WITH_CUR_LOCALE (error (0, 0, _("\
 118 %s: value for field `%s' must not be an empty string"),
 119                               "LC_NUMERIC", "decimal_point"));
 120     }
 121   if (numeric->decimal_point_wc == L'\0')
 122     numeric->decimal_point_wc = L'.';
 123
 124   if (numeric->grouping_len == 0 && ! be_quiet && ! nothing)
 125     WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 126                             "LC_NUMERIC", "grouping"));
 127 }
 128
 129
 130 void
 131 numeric_output (struct localedef_t *locale, const struct charmap_t *charmap,
 132                 const char *output_path)
 133 {
 134   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
 135   struct iovec iov[3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 136   struct locale_file data;
 137   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 138   size_t cnt = 0;
 139
 140   data.magic = LIMAGIC (LC_NUMERIC);
 141   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC);
 142   iov[cnt].iov_base = (void *) &data;
 143   iov[cnt].iov_len = sizeof (data);
 144   ++cnt;
 145
 146   iov[cnt].iov_base = (void *) idx;
 147   iov[cnt].iov_len = sizeof (idx);
 148   ++cnt;
 149
 150   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 151   iov[cnt].iov_base = (void *) (numeric->decimal_point ?: "");
 152   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 153   ++cnt;
 154
 155   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 156   iov[cnt].iov_base = (void *) (numeric->thousands_sep ?: "");
 157   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 158   ++cnt;
 159
 160   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 161   iov[cnt].iov_base = numeric->grouping;
 162   iov[cnt].iov_len = numeric->grouping_len;
 163   ++cnt;
 164
 165   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 166
 167   /* Align following data */
 168   iov[cnt].iov_base = (void *) "\0\0";
 169   iov[cnt].iov_len = ((idx[cnt - 2] + 3) & ~3) - idx[cnt - 2];
 170   idx[cnt - 2] = (idx[cnt - 2] + 3) & ~3;
 171   ++cnt;
 172
 173   iov[cnt].iov_base = (void *) &numeric->decimal_point_wc;
 174   iov[cnt].iov_len = sizeof (uint32_t);
 175   ++cnt;
 176
 177   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 178   iov[cnt].iov_base = (void *) &numeric->thousands_sep_wc;
 179   iov[cnt].iov_len = sizeof (uint32_t);
 180   ++cnt;
 181
 182   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 183   iov[cnt].iov_base = (void *) charmap->code_set_name;
 184   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 185
 186   assert (cnt + 1 == 3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
 187
 188   write_locale_data (output_path, LC_NUMERIC, "LC_NUMERIC",
 189                      3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC), iov);
 190 }
 191
 192
 193 /* The parser for the LC_NUMERIC section of the locale definition.  */
 194 void
 195 numeric_read (struct linereader *ldfile, struct localedef_t *result,
 196               const struct charmap_t *charmap, const char *repertoire_name,
 197               int ignore_content)
 198 {
 199   struct repertoire_t *repertoire = NULL;
 200   struct locale_numeric_t *numeric;
 201   struct token *now;
 202   enum token_t nowtok;
 203
 204   /* Get the repertoire we have to use.  */
 205   if (repertoire_name != NULL)
 206     repertoire = repertoire_read (repertoire_name);
 207
 208   /* The rest of the line containing `LC_NUMERIC' must be free.  */
 209   lr_ignore_rest (ldfile, 1);
 210
 211
 212   do
 213     {
 214       now = lr_token (ldfile, charmap, result, NULL, verbose);
 215       nowtok = now->tok;
 216     }
 217   while (nowtok == tok_eol);
 218
 219   /* If we see `copy' now we are almost done.  */
 220   if (nowtok == tok_copy)
 221     {
 222       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_numeric,
 223                    LC_NUMERIC, "LC_NUMERIC", ignore_content);
 224       return;
 225     }
 226
 227   /* Prepare the data structures.  */
 228   numeric_startup (ldfile, result, ignore_content);
 229   numeric = result->categories[LC_NUMERIC].numeric;
 230
 231   while (1)
 232     {
 233       /* Of course we don't proceed beyond the end of file.  */
 234       if (nowtok == tok_eof)
 235         break;
 236
 237       /* Ingore empty lines.  */
 238       if (nowtok == tok_eol)
 239         {
 240           now = lr_token (ldfile, charmap, result, NULL, verbose);
 241           nowtok = now->tok;
 242           continue;
 243         }
 244
 245       switch (nowtok)
 246         {
 247 #define STR_ELEM(cat) \
 248         case tok_##cat:                                                       \
 249           /* Ignore the rest of the line if we don't need the input of        \
 250              this line.  */                                                   \
 251           if (ignore_content)                                                 \
 252             {                                                                 \
 253               lr_ignore_rest (ldfile, 0);                                     \
 254               break;                                                          \
 255             }                                                                 \
 256                                                                               \
 257           ldfile->return_widestr = 1;                                         \
 258           now = lr_token (ldfile, charmap, result, repertoire, verbose);              \
 259           if (now->tok != tok_string)                                         \
 260             goto err_label;                                                   \
 261           if (numeric->cat != NULL)                                           \
 262             lr_error (ldfile, _("\
 263 %s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
 264           else if (!ignore_content && now->val.str.startmb == NULL)           \
 265             {                                                                 \
 266               lr_error (ldfile, _("\
 267 %s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
 268               numeric->cat = "";                                              \
 269               numeric->cat##_wc = L'\0';                                      \
 270             }                                                                 \
 271           else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2)    \
 272             {                                                                 \
 273               lr_error (ldfile, _("\
 274 %s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat);   \
 275             }                                                                 \
 276           else if (!ignore_content)                                           \
 277             {                                                                 \
 278               numeric->cat = now->val.str.startmb;                            \
 279                                                                               \
 280               if (now->val.str.startwc != NULL)                               \
 281                 numeric->cat##_wc = *now->val.str.startwc;                    \
 282             }                                                                 \
 283           ldfile->return_widestr = 0;                                         \
 284           break
 285
 286           STR_ELEM (decimal_point);
 287           STR_ELEM (thousands_sep);
 288
 289         case tok_grouping:
 290           /* Ignore the rest of the line if we don't need the input of
 291              this line.  */
 292           if (ignore_content)
 293             {
 294               lr_ignore_rest (ldfile, 0);
 295               break;
 296             }
 297
 298           now = lr_token (ldfile, charmap, result, NULL, verbose);
 299           if (now->tok != tok_minus1 && now->tok != tok_number)
 300             goto err_label;
 301           else
 302             {
 303               size_t act = 0;
 304               size_t max = 10;
 305               char *grouping = xmalloc (max);
 306
 307               do
 308                 {
 309                   if (act + 1 >= max)
 310                     {
 311                       max *= 2;
 312                       grouping = xrealloc (grouping, max);
 313                     }
 314
 315                   if (act > 0 && grouping[act - 1] == '\177')
 316                     {
 317                       lr_error (ldfile, _("\
 318 %s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
 319                       lr_ignore_rest (ldfile, 0);
 320                       break;
 321                     }
 322
 323                   if (now->tok == tok_minus1)
 324                     grouping[act++] = '\177';
 325                   else if (now->val.num == 0)
 326                     {
 327                       /* A value of 0 disables grouping from here on but
 328                          we must not store a NUL character since this
 329                          terminates the string.  Use something different
 330                          which must not be used otherwise.  */
 331                       grouping[act++] = '\377';
 332                     }
 333                   else if (now->val.num > 126)
 334                     lr_error (ldfile, _("\
 335 %s: values for field `%s' must be smaller than 127"),
 336                               "LC_NUMERIC", "grouping");
 337                   else
 338                     grouping[act++] = now->val.num;
 339
 340                   /* Next must be semicolon.  */
 341                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 342                   if (now->tok != tok_semicolon)
 343                     break;
 344
 345                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 346                 }
 347               while (now->tok == tok_minus1 || now->tok == tok_number);
 348
 349               if (now->tok != tok_eol)
 350                 goto err_label;
 351
 352               grouping[act++] = '\0';
 353
 354               numeric->grouping = xrealloc (grouping, act);
 355               numeric->grouping_len = act;
 356             }
 357           break;
 358
 359         case tok_end:
 360           /* Next we assume `LC_NUMERIC'.  */
 361           now = lr_token (ldfile, charmap, result, NULL, verbose);
 362           if (now->tok == tok_eof)
 363             break;
 364           if (now->tok == tok_eol)
 365             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
 366           else if (now->tok != tok_lc_numeric)
 367             lr_error (ldfile, _("\
 368 %1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
 369           lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
 370           return;
 371
 372         default:
 373         err_label:
 374           SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
 375         }
 376
 377       /* Prepare for the next round.  */
 378       now = lr_token (ldfile, charmap, result, NULL, verbose);
 379       nowtok = now->tok;
 380     }
 381
 382   /* When we come here we reached the end of the file.  */
 383   lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
 384 }