locale/programs/ld-numeric.c

   1 /* Copyright (C) 1995, 1996, 1997, 1998, 1999 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 Library General Public License as
   7    published by the Free Software Foundation; either version 2 of the
   8    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    Library General Public License for more details.
  14
  15    You should have received a copy of the GNU Library General Public
  16    License along with the GNU C Library; see the file COPYING.LIB.  If not,
  17    write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
  18    Boston, MA 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 "linereader.h"
  31 #include "localedef.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 };
  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       struct locale_numeric_t *numeric;
  53
  54       locale->categories[LC_NUMERIC].numeric = numeric =
  55         (struct locale_numeric_t *) xcalloc (1, sizeof (*numeric));
  56
  57       numeric->grouping = NULL;
  58       numeric->grouping_len = 0;
  59     }
  60
  61   lr->translate_strings = 1;
  62   lr->return_widestr = 0;
  63 }
  64
  65
  66 void
  67 numeric_finish (struct localedef_t *locale, struct charmap_t *charmap)
  68 {
  69   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  70
  71 #define TEST_ELEM(cat)                                                        \
  72   if (numeric->cat == NULL && !be_quiet)                                      \
  73     error (0, 0, _("%s: field `%s' not defined"), "LC_NUMERIC", #cat)
  74
  75   TEST_ELEM (decimal_point);
  76   TEST_ELEM (thousands_sep);
  77
  78   /* The decimal point must not be empty.  This is not said explicitly
  79      in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
  80      != "".  */
  81   if (numeric->decimal_point[0] == '\0' && !be_quiet)
  82     {
  83       error (0, 0, _("\
  84 %s: value for field `%s' must not be the empty string"),
  85              "LC_NUMERIC", "decimal_point");
  86     }
  87
  88   if (numeric->grouping_len == 0 && !be_quiet)
  89     error (0, 0, _("%s: field `%s' not defined"), "LC_NUMERIC", "grouping");
  90 }
  91
  92
  93 void
  94 numeric_output (struct localedef_t *locale, struct charmap_t *charmap,
  95                 const char *output_path)
  96 {
  97   struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  98   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
  99   struct locale_file data;
 100   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
 101   size_t cnt = 0;
 102
 103   data.magic = LIMAGIC (LC_NUMERIC);
 104   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC);
 105   iov[cnt].iov_base = (void *) &data;
 106   iov[cnt].iov_len = sizeof (data);
 107   ++cnt;
 108
 109   iov[cnt].iov_base = (void *) idx;
 110   iov[cnt].iov_len = sizeof (idx);
 111   ++cnt;
 112
 113   idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
 114   iov[cnt].iov_base = (void *) (numeric->decimal_point ?: "");
 115   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 116   ++cnt;
 117
 118   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 119   iov[cnt].iov_base = (void *) (numeric->thousands_sep ?: "");
 120   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 121   ++cnt;
 122
 123   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 124   iov[cnt].iov_base = numeric->grouping;
 125   iov[cnt].iov_len = numeric->grouping_len;
 126
 127   assert (cnt + 1 == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));
 128
 129   write_locale_data (output_path, "LC_NUMERIC",
 130                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC), iov);
 131 }
 132
 133
 134 /* The parser for the LC_NUMERIC section of the locale definition.  */
 135 void
 136 numeric_read (struct linereader *ldfile, struct localedef_t *result,
 137               struct charmap_t *charmap, const char *repertoire_name,
 138               int ignore_content)
 139 {
 140   struct repertoire_t *repertoire = NULL;
 141   struct locale_numeric_t *numeric;
 142   struct token *now;
 143   enum token_t nowtok;
 144
 145   /* Get the repertoire we have to use.  */
 146   if (repertoire_name != NULL)
 147     repertoire = repertoire_read (repertoire_name);
 148
 149   /* The rest of the line containing `LC_NUMERIC' must be free.  */
 150   lr_ignore_rest (ldfile, 1);
 151
 152
 153   do
 154     {
 155       now = lr_token (ldfile, charmap, NULL);
 156       nowtok = now->tok;
 157     }
 158   while (nowtok == tok_eol);
 159
 160   /* If we see `copy' now we are almost done.  */
 161   if (nowtok == tok_copy)
 162     {
 163       handle_copy (ldfile, charmap, repertoire, tok_lc_numeric, LC_NUMERIC,
 164                    "LC_NUMERIC", ignore_content);
 165       return;
 166     }
 167
 168   /* Prepare the data structures.  */
 169   numeric_startup (ldfile, result, ignore_content);
 170   numeric = result->categories[LC_NUMERIC].numeric;
 171
 172   while (1)
 173     {
 174       /* Of course we don't proceed beyond the end of file.  */
 175       if (nowtok == tok_eof)
 176         break;
 177
 178       /* Ingore empty lines.  */
 179       if (nowtok == tok_eol)
 180         {
 181           now = lr_token (ldfile, charmap, NULL);
 182           nowtok = now->tok;
 183           continue;
 184         }
 185
 186       switch (nowtok)
 187         {
 188 #define STR_ELEM(cat) \
 189         case tok_##cat:                                                       \
 190           now = lr_token (ldfile, charmap, NULL);                             \
 191           if (now->tok != tok_string)                                         \
 192             goto err_label;                                                   \
 193           if (numeric->cat != NULL)                                           \
 194             lr_error (ldfile, _("\
 195 %s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
 196           else if (!ignore_content && now->val.str.startmb == NULL)           \
 197             {                                                                 \
 198               lr_error (ldfile, _("\
 199 %s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
 200               numeric->cat = "";                                              \
 201             }                                                                 \
 202           else if (!ignore_content)                                           \
 203             numeric->cat = now->val.str.startmb;                              \
 204           break
 205
 206           STR_ELEM (decimal_point);
 207           STR_ELEM (thousands_sep);
 208
 209         case tok_grouping:
 210           now = lr_token (ldfile, charmap, NULL);
 211           if (now->tok != tok_minus1 && now->tok != tok_number)
 212             goto err_label;
 213           else
 214             {
 215               size_t act = 0;
 216               size_t max = 10;
 217               char *grouping = ignore_content ? NULL : xmalloc (max);
 218
 219               do
 220                 {
 221                   if (act + 1 >= max)
 222                     {
 223                       max *= 2;
 224                       grouping = xrealloc (grouping, max);
 225                     }
 226
 227                   if (act > 0 && grouping[act - 1] == '\177')
 228                     {
 229                       lr_error (ldfile, _("\
 230 %s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
 231                       lr_ignore_rest (ldfile, 0);
 232                       break;
 233                     }
 234
 235                   if (now->tok == tok_minus1)
 236                     {
 237                       if (!ignore_content)
 238                         grouping[act++] = '\177';
 239                     }
 240                   else if (now->val.num == 0)
 241                     {
 242                       /* A value of 0 disables grouping from here on but
 243                          we must not store a NUL character since this
 244                          terminates the string.  Use something different
 245                          which must not be used otherwise.  */
 246                       if (!ignore_content)
 247                         grouping[act++] = '\377';
 248                     }
 249                   else if (now->val.num > 126)
 250                     lr_error (ldfile, _("\
 251 %s: values for field `%s' must be smaller than 127"),
 252                               "LC_NUMERIC", "grouping");
 253                   else if (!ignore_content)
 254                     grouping[act++] = now->val.num;
 255
 256                   /* Next must be semicolon.  */
 257                   now = lr_token (ldfile, charmap, NULL);
 258                   if (now->tok != tok_semicolon)
 259                     break;
 260
 261                   now = lr_token (ldfile, charmap, NULL);
 262                 }
 263               while (now->tok == tok_minus1 || now->tok == tok_number);
 264
 265               if (now->tok != tok_eol)
 266                 goto err_label;
 267
 268               if (!ignore_content)
 269                 {
 270                   grouping[act++] = '\0';
 271
 272                   numeric->grouping = xrealloc (grouping, act);
 273                   numeric->grouping_len = act;
 274                 }
 275             }
 276           break;
 277
 278         case tok_end:
 279           /* Next we assume `LC_NUMERIC'.  */
 280           now = lr_token (ldfile, charmap, NULL);
 281           if (now->tok == tok_eof)
 282             break;
 283           if (now->tok == tok_eol)
 284             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NUMERIC");
 285           else if (now->tok != tok_lc_numeric)
 286             lr_error (ldfile, _("\
 287 %1$s: definition does not end with `END %1$s'"), "LC_NUMERIC");
 288           lr_ignore_rest (ldfile, now->tok == tok_lc_numeric);
 289           return;
 290
 291         default:
 292         err_label:
 293           SYNTAX_ERROR (_("%s: syntax error"), "LC_NUMERIC");
 294         }
 295
 296       /* Prepare for the next round.  */
 297       now = lr_token (ldfile, charmap, NULL);
 298       nowtok = now->tok;
 299     }
 300
 301   /* When we come here we reached the end of the file.  */
 302   lr_error (ldfile, _("%s: premature end of file"), "LC_NUMERIC");
 303 }