locale/programs/ld-numeric.c

   1 /* Copyright (C) 1995-1999, 2000, 2001, 2002 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    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 <langinfo.h>
  25 #include <string.h>
  26 #include <sys/uio.h>
  27
  28 #include <assert.h>
  29
  30 #include "localedef.h"
  31 #include "linereader.h"
  32 #include "localeinfo.h"
  33 #include "locfile.h"
  34
  35
  36 /* The real definition of the struct for the LC_NUMERIC locale.  */
  37 struct locale_numeric_t
  38 {
  39   const char *decimal_point;
  40   const char *thousands_sep;
  41   char *grouping;
  42   size_t grouping_len;
  43   uint32_t decimal_point_wc;
  44   uint32_t thousands_sep_wc;
  45 };
  46
  47
  48 static void
  49 numeric_startup (struct linereader *lr, struct localedef_t *locale,
  50                  int ignore_content)
  51 {
  52   if (!ignore_content)
  53     {
  54       locale->categories[LC_NUMERIC].numeric =
  55         (struct locale_numeric_t *) xcalloc (1,
  56                                              sizeof (struct locale_numeric_t));
  57     }
  58
  59   if (lr != NULL)
  60     {
  61       lr->translate_strings = 1;
  62       lr->return_widestr = 0;
  63     }
  64 }
  65
  66
  67 void
  68 numeric_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  69 {
  70   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  71   int nothing = 0;
  72
  73   /* Now resolve copying and also handle completely missing definitions.  */
  74   if (numeric == NULL)
  75     {
  76       /* First see whether we were supposed to copy.  If yes, find the
  77          actual definition.  */
  78       if (locale->copy_name[LC_NUMERIC] != NULL)
  79         {
  80           /* Find the copying locale.  This has to happen transitively since
  81              the locale we are copying from might also copying another one.  */
  82           struct localedef_t *from = locale;
  83
  84           do
  85             from = find_locale (LC_NUMERIC, from->copy_name[LC_NUMERIC],
  86                                 from->repertoire_name, charmap);
  87           while (from->categories[LC_NUMERIC].numeric == NULL
  88                  && from->copy_name[LC_NUMERIC] != NULL);
  89
  90           numeric = locale->categories[LC_NUMERIC].numeric
  91             = from->categories[LC_NUMERIC].numeric;
  92         }
  93
  94       /* If there is still no definition issue an warning and create an
  95          empty one.  */
  96       if (numeric == NULL)
  97         {
  98           if (! be_quiet)
  99             WITH_CUR_LOCALE (error (0, 0, _("\
 100 No definition for %s category found"), "LC_NUMERIC"));
 101           numeric_startup (NULL, locale, 0);
 102           numeric = locale->categories[LC_NUMERIC].numeric;
 103           nothing = 1;
 104         }
 105     }
 106
 107   /* The decimal point must not be empty.  This is not said explicitly
 108      in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
 109      != "".  */
 110   if (numeric->decimal_point == NULL)
 111     {
 112       if (! be_quiet && ! nothing)
 113         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 114                                 "LC_NUMERIC", "decimal_point"));
 115       numeric->decimal_point = ".";
 116     }
 117   else if (numeric->decimal_point[0] == '\0' && ! be_quiet && ! nothing)
 118     {
 119       WITH_CUR_LOCALE (error (0, 0, _("\
 120 %s: value for field `%s' must not be the empty string"),
 121                               "LC_NUMERIC", "decimal_point"));
 122     }
 123   if (numeric->decimal_point_wc == L'\0')
 124     numeric->decimal_point_wc = L'.';
 125
 126   if (numeric->grouping_len == 0 && ! be_quiet && ! nothing)
 127     WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 128                             "LC_NUMERIC", "grouping"));
 129 }
 130
 131
 132 void
 133 numeric_output (struct localedef_t *locale, const struct charmap_t *charmap,
 134                 const char *output_path)
 135 {
 136   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
 137   struct iovec iov[3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 138   struct locale_file data;
 139   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 140   size_t cnt = 0;
 141
 142   data.magic = LIMAGIC (LC_NUMERIC);
 143   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC);
 144   iov[cnt].iov_base = (void *) &data;
 145   iov[cnt].iov_len = sizeof (data);
 146   ++cnt;
 147
 148   iov[cnt].iov_base = (void *) idx;
 149   iov[cnt].iov_len = sizeof (idx);
 150   ++cnt;
 151
 152   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 153   iov[cnt].iov_base = (void *) (numeric->decimal_point ?: "");
 154   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 155   ++cnt;
 156
 157   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 158   iov[cnt].iov_base = (void *) (numeric->thousands_sep ?: "");
 159   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 160   ++cnt;
 161
 162   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 163   iov[cnt].iov_base = numeric->grouping;
 164   iov[cnt].iov_len = numeric->grouping_len;
 165   ++cnt;
 166
 167   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 168
 169   /* Align following data */
 170   iov[cnt].iov_base = (void *) "\0\0";
 171   iov[cnt].iov_len = ((idx[cnt - 2] + 3) & ~3) - idx[cnt - 2];
 172   idx[cnt - 2] = (idx[cnt - 2] + 3) & ~3;
 173   ++cnt;
 174
 175   iov[cnt].iov_base = (void *) &numeric->decimal_point_wc;
 176   iov[cnt].iov_len = sizeof (uint32_t);
 177   ++cnt;
 178
 179   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 180   iov[cnt].iov_base = (void *) &numeric->thousands_sep_wc;
 181   iov[cnt].iov_len = sizeof (uint32_t);
 182   ++cnt;
 183
 184   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 185   iov[cnt].iov_base = (void *) charmap->code_set_name;
 186   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 187
 188   assert (cnt + 1 == 3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
 189
 190   write_locale_data (output_path, LC_NUMERIC, "LC_NUMERIC",
 191                      3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC), iov);
 192 }
 193
 194
 195 /* The parser for the LC_NUMERIC section of the locale definition.  */
 196 void
 197 numeric_read (struct linereader *ldfile, struct localedef_t *result,
 198               const struct charmap_t *charmap, const char *repertoire_name,
 199               int ignore_content)
 200 {
 201   struct repertoire_t *repertoire = NULL;
 202   struct locale_numeric_t *numeric;
 203   struct token *now;
 204   enum token_t nowtok;
 205
 206   /* Get the repertoire we have to use.  */
 207   if (repertoire_name != NULL)
 208     repertoire = repertoire_read (repertoire_name);
 209
 210   /* The rest of the line containing `LC_NUMERIC' must be free.  */
 211   lr_ignore_rest (ldfile, 1);
 212
 213
 214   do
 215     {
 216       now = lr_token (ldfile, charmap, result, NULL, verbose);
 217       nowtok = now->tok;
 218     }
 219   while (nowtok == tok_eol);
 220
 221   /* If we see `copy' now we are almost done.  */
 222   if (nowtok == tok_copy)
 223     {
 224       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_numeric,
 225                    LC_NUMERIC, "LC_NUMERIC", ignore_content);
 226       return;
 227     }
 228
 229   /* Prepare the data structures.  */
 230   numeric_startup (ldfile, result, ignore_content);
 231   numeric = result->categories[LC_NUMERIC].numeric;
 232
 233   while (1)
 234     {
 235       /* Of course we don't proceed beyond the end of file.  */
 236       if (nowtok == tok_eof)
 237         break;
 238
 239       /* Ingore empty lines.  */
 240       if (nowtok == tok_eol)
 241         {
 242           now = lr_token (ldfile, charmap, result, NULL, verbose);
 243           nowtok = now->tok;
 244           continue;
 245         }
 246
 247       switch (nowtok)
 248         {
 249 #define STR_ELEM(cat) \
 250         case tok_##cat:                                                       \
 251           /* Ignore the rest of the line if we don't need the input of        \
 252              this line.  */                                                   \
 253           if (ignore_content)                                                 \
 254             {                                                                 \
 255               lr_ignore_rest (ldfile, 0);                                     \
 256               break;                                                          \
 257             }                                                                 \
 258                                                                               \
 259           ldfile->return_widestr = 1;                                         \
 260           now = lr_token (ldfile, charmap, result, repertoire, verbose);              \
 261           if (now->tok != tok_string)                                         \
 262             goto err_label;                                                   \
 263           if (numeric->cat != NULL)                                           \
 264             lr_error (ldfile, _("\
 265 %s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
 266           else if (!ignore_content && now->val.str.startmb == NULL)           \
 267             {                                                                 \
 268               lr_error (ldfile, _("\
 269 %s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
 270               numeric->cat = "";                                              \
 271               numeric->cat##_wc = L'\0';                                      \
 272             }                                                                 \
 273           else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2)    \
 274             {                                                                 \
 275               lr_error (ldfile, _("\
 276 %s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat);   \
 277             }                                                                 \
 278           else if (!ignore_content)                                           \
 279             {                                                                 \
 280               numeric->cat = now->val.str.startmb;                            \
 281                                                                               \
 282               if (now->val.str.startwc != NULL)                               \
 283                 numeric->cat##_wc = *now->val.str.startwc;                    \
 284             }                                                                 \
 285           ldfile->return_widestr = 0;                                         \
 286           break
 287
 288           STR_ELEM (decimal_point);
 289           STR_ELEM (thousands_sep);
 290
 291         case tok_grouping:
 292           /* Ignore the rest of the line if we don't need the input of
 293              this line.  */
 294           if (ignore_content)
 295             {
 296               lr_ignore_rest (ldfile, 0);
 297               break;
 298             }
 299
 300           now = lr_token (ldfile, charmap, result, NULL, verbose);
 301           if (now->tok != tok_minus1 && now->tok != tok_number)
 302             goto err_label;
 303           else
 304             {
 305               size_t act = 0;
 306               size_t max = 10;
 307               char *grouping = ignore_content ? NULL : xmalloc (max);
 308
 309               do
 310                 {
 311                   if (act + 1 >= max)
 312                     {
 313                       max *= 2;
 314                       grouping = xrealloc (grouping, max);
 315                     }
 316
 317                   if (act > 0 && grouping[act - 1] == '\177')
 318                     {
 319                       lr_error (ldfile, _("\
 320 %s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
 321                       lr_ignore_rest (ldfile, 0);
 322                       break;
 323                     }
 324
 325                   if (now->tok == tok_minus1)
 326                     {
 327                       if (!ignore_content)
 328                         grouping[act++] = '\177';
 329                     }
 330                   else if (now->val.num == 0)
 331                     {
 332                       /* A value of 0 disables grouping from here on but
 333                          we must not store a NUL character since this
 334                          terminates the string.  Use something different
 335                          which must not be used otherwise.  */
 336                       if (!ignore_content)
 337                         grouping[act++] = '\377';
 338                     }
 339                   else if (now->val.num > 126)
 340                     lr_error (ldfile, _("\
 341 %s: values for field `%s' must be smaller than 127"),
 342                               "LC_NUMERIC", "grouping");
 343                   else if (!ignore_content)
 344                     grouping[act++] = now->val.num;
 345
 346                   /* Next must be semicolon.  */
 347                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 348                   if (now->tok != tok_semicolon)
 349                     break;
 350
 351                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 352                 }
 353               while (now->tok == tok_minus1 || now->tok == tok_number);
 354
 355               if (now->tok != tok_eol)
 356                 goto err_label;
 357
 358               if (!ignore_content)
 359                 {
 360                   grouping[act++] = '\0';
 361
 362                   numeric->grouping = xrealloc (grouping, act);
 363                   numeric->grouping_len = act;
 364                 }
 365             }
 366           break;
 367
 368         case tok_end:
 369           /* Next we assume `LC_NUMERIC'.  */
 370           now = lr_token (ldfile, charmap, result, NULL, verbose);
 371           if (now->tok == tok_eof)
 372             break;
 373           if (now->tok == tok_eol)
 374             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
 375           else if (now->tok != tok_lc_numeric)
 376             lr_error (ldfile, _("\
 377 %1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
 378           lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
 379           return;
 380
 381         default:
 382         err_label:
 383           SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
 384         }
 385
 386       /* Prepare for the next round.  */
 387       now = lr_token (ldfile, charmap, result, NULL, verbose);
 388       nowtok = now->tok;
 389     }
 390
 391   /* When we come here we reached the end of the file.  */
 392   lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
 393 }