locale/programs/ld-numeric.c

   1 /* Copyright (C) 1995-2014 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 <stdint.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 locale_file file;
 137
 138   init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
 139   add_locale_string (&file, numeric->decimal_point ?: "");
 140   add_locale_string (&file, numeric->thousands_sep ?: "");
 141   add_locale_raw_data (&file, numeric->grouping, numeric->grouping_len);
 142   add_locale_uint32 (&file, numeric->decimal_point_wc);
 143   add_locale_uint32 (&file, numeric->thousands_sep_wc);
 144   add_locale_string (&file, charmap->code_set_name);
 145   write_locale_data (output_path, LC_NUMERIC, "LC_NUMERIC", &file);
 146 }
 147
 148
 149 /* The parser for the LC_NUMERIC section of the locale definition.  */
 150 void
 151 numeric_read (struct linereader *ldfile, struct localedef_t *result,
 152               const struct charmap_t *charmap, const char *repertoire_name,
 153               int ignore_content)
 154 {
 155   struct repertoire_t *repertoire = NULL;
 156   struct locale_numeric_t *numeric;
 157   struct token *now;
 158   enum token_t nowtok;
 159
 160   /* Get the repertoire we have to use.  */
 161   if (repertoire_name != NULL)
 162     repertoire = repertoire_read (repertoire_name);
 163
 164   /* The rest of the line containing `LC_NUMERIC' must be free.  */
 165   lr_ignore_rest (ldfile, 1);
 166
 167
 168   do
 169     {
 170       now = lr_token (ldfile, charmap, result, NULL, verbose);
 171       nowtok = now->tok;
 172     }
 173   while (nowtok == tok_eol);
 174
 175   /* If we see `copy' now we are almost done.  */
 176   if (nowtok == tok_copy)
 177     {
 178       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_numeric,
 179                    LC_NUMERIC, "LC_NUMERIC", ignore_content);
 180       return;
 181     }
 182
 183   /* Prepare the data structures.  */
 184   numeric_startup (ldfile, result, ignore_content);
 185   numeric = result->categories[LC_NUMERIC].numeric;
 186
 187   while (1)
 188     {
 189       /* Of course we don't proceed beyond the end of file.  */
 190       if (nowtok == tok_eof)
 191         break;
 192
 193       /* Ingore empty lines.  */
 194       if (nowtok == tok_eol)
 195         {
 196           now = lr_token (ldfile, charmap, result, NULL, verbose);
 197           nowtok = now->tok;
 198           continue;
 199         }
 200
 201       switch (nowtok)
 202         {
 203 #define STR_ELEM(cat) \
 204         case tok_##cat:                                                       \
 205           /* Ignore the rest of the line if we don't need the input of        \
 206              this line.  */                                                   \
 207           if (ignore_content)                                                 \
 208             {                                                                 \
 209               lr_ignore_rest (ldfile, 0);                                     \
 210               break;                                                          \
 211             }                                                                 \
 212                                                                               \
 213           ldfile->return_widestr = 1;                                         \
 214           now = lr_token (ldfile, charmap, result, repertoire, verbose);              \
 215           if (now->tok != tok_string)                                         \
 216             goto err_label;                                                   \
 217           if (numeric->cat != NULL)                                           \
 218             lr_error (ldfile, _("\
 219 %s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
 220           else if (!ignore_content && now->val.str.startmb == NULL)           \
 221             {                                                                 \
 222               lr_error (ldfile, _("\
 223 %s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
 224               numeric->cat = "";                                              \
 225               numeric->cat##_wc = L'\0';                                      \
 226             }                                                                 \
 227           else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2)    \
 228             {                                                                 \
 229               lr_error (ldfile, _("\
 230 %s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat);   \
 231             }                                                                 \
 232           else if (!ignore_content)                                           \
 233             {                                                                 \
 234               numeric->cat = now->val.str.startmb;                            \
 235                                                                               \
 236               if (now->val.str.startwc != NULL)                               \
 237                 numeric->cat##_wc = *now->val.str.startwc;                    \
 238             }                                                                 \
 239           ldfile->return_widestr = 0;                                         \
 240           break
 241
 242           STR_ELEM (decimal_point);
 243           STR_ELEM (thousands_sep);
 244
 245         case tok_grouping:
 246           /* Ignore the rest of the line if we don't need the input of
 247              this line.  */
 248           if (ignore_content)
 249             {
 250               lr_ignore_rest (ldfile, 0);
 251               break;
 252             }
 253
 254           now = lr_token (ldfile, charmap, result, NULL, verbose);
 255           if (now->tok != tok_minus1 && now->tok != tok_number)
 256             goto err_label;
 257           else
 258             {
 259               size_t act = 0;
 260               size_t max = 10;
 261               char *grouping = xmalloc (max);
 262
 263               do
 264                 {
 265                   if (act + 1 >= max)
 266                     {
 267                       max *= 2;
 268                       grouping = xrealloc (grouping, max);
 269                     }
 270
 271                   if (act > 0 && grouping[act - 1] == '\177')
 272                     {
 273                       lr_error (ldfile, _("\
 274 %s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
 275                       lr_ignore_rest (ldfile, 0);
 276                       break;
 277                     }
 278
 279                   if (now->tok == tok_minus1)
 280                     grouping[act++] = '\177';
 281                   else if (now->val.num == 0)
 282                     {
 283                       /* A value of 0 disables grouping from here on but
 284                          we must not store a NUL character since this
 285                          terminates the string.  Use something different
 286                          which must not be used otherwise.  */
 287                       grouping[act++] = '\377';
 288                     }
 289                   else if (now->val.num > 126)
 290                     lr_error (ldfile, _("\
 291 %s: values for field `%s' must be smaller than 127"),
 292                               "LC_NUMERIC", "grouping");
 293                   else
 294                     grouping[act++] = now->val.num;
 295
 296                   /* Next must be semicolon.  */
 297                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 298                   if (now->tok != tok_semicolon)
 299                     break;
 300
 301                   now = lr_token (ldfile, charmap, result, NULL, verbose);
 302                 }
 303               while (now->tok == tok_minus1 || now->tok == tok_number);
 304
 305               if (now->tok != tok_eol)
 306                 goto err_label;
 307
 308               /* A single -1 means no grouping.  */
 309               if (act == 1 && grouping[0] == '\177')
 310                 act--;
 311               grouping[act++] = '\0';
 312
 313               numeric->grouping = xrealloc (grouping, act);
 314               numeric->grouping_len = act;
 315             }
 316           break;
 317
 318         case tok_end:
 319           /* Next we assume `LC_NUMERIC'.  */
 320           now = lr_token (ldfile, charmap, result, NULL, verbose);
 321           if (now->tok == tok_eof)
 322             break;
 323           if (now->tok == tok_eol)
 324             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
 325           else if (now->tok != tok_lc_numeric)
 326             lr_error (ldfile, _("\
 327 %1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
 328           lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
 329           return;
 330
 331         default:
 332         err_label:
 333           SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
 334         }
 335
 336       /* Prepare for the next round.  */
 337       now = lr_token (ldfile, charmap, result, NULL, verbose);
 338       nowtok = now->tok;
 339     }
 340
 341   /* When we come here we reached the end of the file.  */
 342   lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
 343 }