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, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  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 "linereader.h"
  31 #include "localeinfo.h"
  32 #include "locfile.h"
  33
  34
  35 /* The real definition of the struct for the LC_NUMERIC locale.  */
  36 struct locale_numeric_t
  37 {
  38   const char *decimal_point;
  39   const char *thousands_sep;
  40   char *grouping;
  41   size_t grouping_len;
  42   uint32_t decimal_point_wc;
  43   uint32_t thousands_sep_wc;
  44 };
  45
  46
  47 static void
  48 numeric_startup (struct linereader *lr, struct localedef_t *locale,
  49                  int ignore_content)
  50 {
  51   if (!ignore_content)
  52     {
  53       locale->categories[LC_NUMERIC].numeric =
  54         (struct locale_numeric_t *) xcalloc (1,
  55                                              sizeof (struct locale_numeric_t));
  56     }
  57
  58   if (lr != NULL)
  59     {
  60       lr->translate_strings = 1;
  61       lr->return_widestr = 0;
  62     }
  63 }
  64
  65
  66 void
  67 numeric_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  68 {
  69   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  70   int nothing = 0;
  71
  72   /* Now resolve copying and also handle completely missing definitions.  */
  73   if (numeric == NULL)
  74     {
  75       /* First see whether we were supposed to copy.  If yes, find the
  76          actual definition.  */
  77       if (locale->copy_name[LC_NUMERIC] != NULL)
  78         {
  79           /* Find the copying locale.  This has to happen transitively since
  80              the locale we are copying from might also copying another one.  */
  81           struct localedef_t *from = locale;
  82
  83           do
  84             from = find_locale (LC_NUMERIC, from->copy_name[LC_NUMERIC],
  85                                 from->repertoire_name, charmap);
  86           while (from->categories[LC_NUMERIC].numeric == NULL
  87                  && from->copy_name[LC_NUMERIC] != NULL);
  88
  89           numeric = locale->categories[LC_NUMERIC].numeric
  90             = from->categories[LC_NUMERIC].numeric;
  91         }
  92
  93       /* If there is still no definition issue an warning and create an
  94          empty one.  */
  95       if (numeric == NULL)
  96         {
  97           if (! be_quiet)
  98             WITH_CUR_LOCALE (error (0, 0, _("\
  99 No definition for %s category found"), "LC_NUMERIC"));
 100           numeric_startup (NULL, locale, 0);
 101           numeric = locale->categories[LC_NUMERIC].numeric;
 102           nothing = 1;
 103         }
 104     }
 105
 106   /* The decimal point must not be empty.  This is not said explicitly
 107      in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
 108      != "".  */
 109   if (numeric->decimal_point == NULL)
 110     {
 111       if (! be_quiet && ! nothing)
 112         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 113                                 "LC_NUMERIC", "decimal_point"));
 114       numeric->decimal_point = ".";
 115     }
 116   else if (numeric->decimal_point[0] == '\0' && ! be_quiet && ! nothing)
 117     {
 118       WITH_CUR_LOCALE (error (0, 0, _("\
 119 %s: value for field `%s' must not be an empty string"),
 120                               "LC_NUMERIC", "decimal_point"));
 121     }
 122   if (numeric->decimal_point_wc == L'\0')
 123     numeric->decimal_point_wc = L'.';
 124
 125   if (numeric->grouping_len == 0 && ! be_quiet && ! nothing)
 126     WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 127                             "LC_NUMERIC", "grouping"));
 128 }
 129
 130
 131 void
 132 numeric_output (struct localedef_t *locale, const struct charmap_t *charmap,
 133                 const char *output_path)
 134 {
 135   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
 136   struct iovec iov[3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 137   struct locale_file data;
 138   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 139   size_t cnt = 0;
 140
 141   data.magic = LIMAGIC (LC_NUMERIC);
 142   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC);
 143   iov[cnt].iov_base = (void *) &data;
 144   iov[cnt].iov_len = sizeof (data);
 145   ++cnt;
 146
 147   iov[cnt].iov_base = (void *) idx;
 148   iov[cnt].iov_len = sizeof (idx);
 149   ++cnt;
 150
 151   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 152   iov[cnt].iov_base = (void *) (numeric->decimal_point ?: "");
 153   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 154   ++cnt;
 155
 156   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 157   iov[cnt].iov_base = (void *) (numeric->thousands_sep ?: "");
 158   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 159   ++cnt;
 160
 161   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 162   iov[cnt].iov_base = numeric->grouping;
 163   iov[cnt].iov_len = numeric->grouping_len;
 164   ++cnt;
 165
 166   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 167
 168   /* Align following data */
 169   iov[cnt].iov_base = (void *) "\0\0";
 170   iov[cnt].iov_len = ((idx[cnt - 2] + 3) & ~3) - idx[cnt - 2];
 171   idx[cnt - 2] = (idx[cnt - 2] + 3) & ~3;
 172   ++cnt;
 173
 174   iov[cnt].iov_base = (void *) &numeric->decimal_point_wc;
 175   iov[cnt].iov_len = sizeof (uint32_t);
 176   ++cnt;
 177
 178   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 179   iov[cnt].iov_base = (void *) &numeric->thousands_sep_wc;
 180   iov[cnt].iov_len = sizeof (uint32_t);
 181   ++cnt;
 182
 183   idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
 184   iov[cnt].iov_base = (void *) charmap->code_set_name;
 185   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 186
 187   assert (cnt + 1 == 3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
 188
 189   write_locale_data (output_path, LC_NUMERIC, "LC_NUMERIC",
 190                      3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC), iov);
 191 }
 192
 193
 194 /* The parser for the LC_NUMERIC section of the locale definition.  */
 195 void
 196 numeric_read (struct linereader *ldfile, struct localedef_t *result,
 197               const struct charmap_t *charmap, const char *repertoire_name,
 198               int ignore_content)
 199 {
 200   struct repertoire_t *repertoire = NULL;
 201   struct locale_numeric_t *numeric;
 202   struct token *now;
 203   enum token_t nowtok;
 204
 205   /* Get the repertoire we have to use.  */
 206   if (repertoire_name != NULL)
 207     repertoire = repertoire_read (repertoire_name);
 208
 209   /* The rest of the line containing `LC_NUMERIC' must be free.  */
 210   lr_ignore_rest (ldfile, 1);
 211
 212
 213   do
 214     {
 215       now = lr_token (ldfile, charmap, result, NULL, verbose);
 216       nowtok = now->tok;
 217     }
 218   while (nowtok == tok_eol);
 219
 220   /* If we see `copy' now we are almost done.  */
 221   if (nowtok == tok_copy)
 222     {
 223       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_numeric,
 224                    LC_NUMERIC, "LC_NUMERIC", ignore_content);
 225       return;
 226     }
 227
 228   /* Prepare the data structures.  */
 229   numeric_startup (ldfile, result, ignore_content);
 230   numeric = result->categories[LC_NUMERIC].numeric;
 231
 232   while (1)
 233     {
 234       /* Of course we don't proceed beyond the end of file.  */
 235       if (nowtok == tok_eof)
 236         break;
 237
 238       /* Ingore empty lines.  */
 239       if (nowtok == tok_eol)
 240         {
 241           now = lr_token (ldfile, charmap, result, NULL, verbose);
 242           nowtok = now->tok;
 243           continue;
 244         }
 245
 246       switch (nowtok)
 247         {
 248 #define STR_ELEM(cat) \
 249         case tok_##cat:                                                       \
 250           /* Ignore the rest of the line if we don't need the input of        \
 251              this line.  */                                                   \
 252           if (ignore_content)                                                 \
 253             {                                                                 \
 254               lr_ignore_rest (ldfile, 0);                                     \
 255               break;                                                          \
 256             }                                                                 \
 257                                                                               \
 258           ldfile->return_widestr = 1;                                         \
 259           now = lr_token (ldfile, charmap, result, repertoire, verbose);              \
 260           if (now->tok != tok_string)                                         \
 261             goto err_label;                                                   \
 262           if (numeric->cat != NULL)                                           \
 263             lr_error (ldfile, _("\
 264 %s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
 265           else if (!ignore_content && now->val.str.startmb == NULL)           \
 266             {                                                                 \
 267               lr_error (ldfile, _("\
 268 %s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
 269               numeric->cat = "";                                              \
 270               numeric->cat##_wc = L'\0';                                      \
 271             }                                                                 \
 272           else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2)    \
 273             {                                                                 \
 274               lr_error (ldfile, _("\
 275 %s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat);   \
 276             }                                                                 \
 277           else if (!ignore_content)                                           \
 278             {                                                                 \
 279               numeric->cat = now->val.str.startmb;                            \
 280                                                                               \
 281               if (now->val.str.startwc != NULL)                               \
 282                 numeric->cat##_wc = *now->val.str.startwc;                    \
 283             }                                                                 \
 284           ldfile->return_widestr = 0;                                         \
 285           break
 286
 287           STR_ELEM (decimal_point);
 288           STR_ELEM (thousands_sep);
 289
 290         case tok_grouping:
 291           /* Ignore the rest of the line if we don't need the input of
 292              this line.  */
 293           if (ignore_content)
 294             {
 295               lr_ignore_rest (ldfile, 0);
 296               break;
 297             }
 298
 299           now = lr_token (ldfile, charmap, result, NULL, verbose);
 300           if (now->tok != tok_minus1 && now->tok != tok_number)
 301             goto err_label;
 302           else
 303             {
 304               size_t act = 0;
 305               size_t max = 10;
 306               char *grouping = xmalloc (max);
 307
 308               do
 309                 {
 310                   if (act + 1 >= max)
 311                     {
 312                       max *= 2;
 313                       grouping = xrealloc (grouping, max);
 314                     }
 315
 316                   if (act > 0 && grouping[act - 1] == '\177')
 317                     {
 318                       lr_error (ldfile, _("\
 319 %s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
 320                       lr_ignore_rest (ldfile, 0);
 321                       break;
 322                     }
 323
 324                   if (now->tok == tok_minus1)
 325                     grouping[act++] = '\177';
 326                   else if (now->val.num == 0)
 327                     {
 328                       /* A value of 0 disables grouping from here on but
 329                          we must not store a NUL character since this
 330                          terminates the string.  Use something different
 331                          which must not be used otherwise.  */
 332                       grouping[act++] = '\377';
 333                     }
 334                   else if (now->val.num > 126)
 335                     lr_error (ldfile, _("\
 336 %s: values for field `%s' must be smaller than 127"),
 337                               "LC_NUMERIC", "grouping");
 338                   else
 339                     grouping[act++] = now->val.num;
 340
 341                   /* Next must be semicolon.  */
 342                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 343                   if (now->tok != tok_semicolon)
 344                     break;
 345
 346                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 347                 }
 348               while (now->tok == tok_minus1 || now->tok == tok_number);
 349
 350               if (now->tok != tok_eol)
 351                 goto err_label;
 352
 353               grouping[act++] = '\0';
 354
 355               numeric->grouping = xrealloc (grouping, act);
 356               numeric->grouping_len = act;
 357             }
 358           break;
 359
 360         case tok_end:
 361           /* Next we assume `LC_NUMERIC'.  */
 362           now = lr_token (ldfile, charmap, result, NULL, verbose);
 363           if (now->tok == tok_eof)
 364             break;
 365           if (now->tok == tok_eol)
 366             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
 367           else if (now->tok != tok_lc_numeric)
 368             lr_error (ldfile, _("\
 369 %1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
 370           lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
 371           return;
 372
 373         default:
 374         err_label:
 375           SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
 376         }
 377
 378       /* Prepare for the next round.  */
 379       now = lr_token (ldfile, charmap, result, NULL, verbose);
 380       nowtok = now->tok;
 381     }
 382
 383   /* When we come here we reached the end of the file.  */
 384   lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
 385 }