locale/programs/ld-name.c

   1 /* Copyright (C) 1998-2024 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published
   6    by the Free Software Foundation; version 2 of the License, or
   7    (at your option) any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, see <https://www.gnu.org/licenses/>.  */
  16
  17 #ifdef HAVE_CONFIG_H
  18 # include <config.h>
  19 #endif
  20
  21 #include <langinfo.h>
  22 #include <string.h>
  23 #include <stdint.h>
  24 #include <sys/uio.h>
  25
  26 #include <assert.h>
  27
  28 #include "localedef.h"
  29 #include "localeinfo.h"
  30 #include "locfile.h"
  31
  32
  33 /* The real definition of the struct for the LC_NAME locale.  */
  34 struct locale_name_t
  35 {
  36   const char *name_fmt;
  37   const char *name_gen;
  38   const char *name_mr;
  39   const char *name_mrs;
  40   const char *name_miss;
  41   const char *name_ms;
  42 };
  43
  44
  45 static void
  46 name_startup (struct linereader *lr, struct localedef_t *locale,
  47                int ignore_content)
  48 {
  49   if (!ignore_content)
  50     locale->categories[LC_NAME].name =
  51       (struct locale_name_t *) xcalloc (1, sizeof (struct locale_name_t));
  52
  53   if (lr != NULL)
  54     {
  55       lr->translate_strings = 1;
  56       lr->return_widestr = 0;
  57     }
  58 }
  59
  60
  61 void
  62 name_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  63 {
  64   struct locale_name_t *name = locale->categories[LC_NAME].name;
  65   int nothing = 0;
  66
  67   /* Now resolve copying and also handle completely missing definitions.  */
  68   if (name == NULL)
  69     {
  70       /* First see whether we were supposed to copy.  If yes, find the
  71          actual definition.  */
  72       if (locale->copy_name[LC_NAME] != NULL)
  73         {
  74           /* Find the copying locale.  This has to happen transitively since
  75              the locale we are copying from might also copying another one.  */
  76           struct localedef_t *from = locale;
  77
  78           do
  79             from = find_locale (LC_NAME, from->copy_name[LC_NAME],
  80                                 from->repertoire_name, charmap);
  81           while (from->categories[LC_NAME].name == NULL
  82                  && from->copy_name[LC_NAME] != NULL);
  83
  84           name = locale->categories[LC_NAME].name
  85             = from->categories[LC_NAME].name;
  86         }
  87
  88       /* If there is still no definition issue an warning and create an
  89          empty one.  */
  90       if (name == NULL)
  91         {
  92           record_warning (_("\
  93 No definition for %s category found"), "LC_NAME");
  94           name_startup (NULL, locale, 0);
  95           name = locale->categories[LC_NAME].name;
  96           nothing = 1;
  97         }
  98     }
  99
 100   if (name->name_fmt == NULL)
 101     {
 102       if (! nothing)
 103         record_error (0, 0, _("%s: field `%s' not defined"),
 104                       "LC_NAME", "name_fmt");
 105       /* Use as the default value the value of the i18n locale.  */
 106       name->name_fmt = "%p%t%g%t%m%t%f";
 107     }
 108   else
 109     {
 110       /* We must check whether the format string contains only the
 111          allowed escape sequences.  */
 112       const char *cp = name->name_fmt;
 113
 114       if (*cp == '\0')
 115         record_error (0, 0, _("%s: field `%s' must not be empty"),
 116                       "LC_NAME", "name_fmt");
 117       else
 118         while (*cp != '\0')
 119           {
 120             if (*cp == '%')
 121               {
 122                 if (*++cp == 'R')
 123                   /* Romanize-flag.  */
 124                   ++cp;
 125                 if (strchr ("dfFgGlomMpsSt", *cp) == NULL)
 126                   {
 127                     record_error (0, 0, _("\
 128 %s: invalid escape sequence in field `%s'"), "LC_NAME", "name_fmt");
 129                     break;
 130                   }
 131               }
 132             ++cp;
 133           }
 134     }
 135
 136 #define TEST_ELEM(cat) \
 137   if (name->cat == NULL)                                                      \
 138     {                                                                         \
 139       if (verbose && ! nothing)                                               \
 140         record_warning (_("%s: field `%s' not defined"), "LC_NAME", #cat);    \
 141       name->cat = "";                                                         \
 142     }
 143
 144   TEST_ELEM (name_gen);
 145   TEST_ELEM (name_mr);
 146   TEST_ELEM (name_mrs);
 147   TEST_ELEM (name_miss);
 148   TEST_ELEM (name_ms);
 149 }
 150
 151
 152 void
 153 name_output (struct localedef_t *locale, const struct charmap_t *charmap,
 154              const char *output_path)
 155 {
 156   struct locale_name_t *name = locale->categories[LC_NAME].name;
 157   struct locale_file file;
 158
 159   init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_NAME));
 160   add_locale_string (&file, name->name_fmt);
 161   add_locale_string (&file, name->name_gen);
 162   add_locale_string (&file, name->name_mr);
 163   add_locale_string (&file, name->name_mrs);
 164   add_locale_string (&file, name->name_miss);
 165   add_locale_string (&file, name->name_ms);
 166   add_locale_string (&file, charmap->code_set_name);
 167   write_locale_data (output_path, LC_NAME, "LC_NAME", &file);
 168 }
 169
 170
 171 /* The parser for the LC_NAME section of the locale definition.  */
 172 void
 173 name_read (struct linereader *ldfile, struct localedef_t *result,
 174            const struct charmap_t *charmap, const char *repertoire_name,
 175            int ignore_content)
 176 {
 177   struct locale_name_t *name;
 178   struct token *now;
 179   struct token *arg;
 180   enum token_t nowtok;
 181
 182   /* The rest of the line containing `LC_NAME' must be empty.  */
 183   lr_ignore_rest (ldfile, 1);
 184
 185   do
 186     {
 187       now = lr_token (ldfile, charmap, result, NULL, verbose);
 188       nowtok = now->tok;
 189     }
 190   while (nowtok == tok_eol);
 191
 192   /* If we see `copy' now we are almost done.  */
 193   if (nowtok == tok_copy)
 194     {
 195       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_name,
 196                    LC_NAME, "LC_NAME", ignore_content);
 197       return;
 198     }
 199
 200   /* Prepare the data structures.  */
 201   name_startup (ldfile, result, ignore_content);
 202   name = result->categories[LC_NAME].name;
 203
 204   while (1)
 205     {
 206       /* Of course we don't proceed beyond the end of file.  */
 207       if (nowtok == tok_eof)
 208         break;
 209
 210       /* Ignore empty lines.  */
 211       if (nowtok == tok_eol)
 212         {
 213           now = lr_token (ldfile, charmap, result, NULL, verbose);
 214           nowtok = now->tok;
 215           continue;
 216         }
 217
 218       switch (nowtok)
 219         {
 220 #define STR_ELEM(cat) \
 221         case tok_##cat:                                                       \
 222           /* Ignore the rest of the line if we don't need the input of        \
 223              this line.  */                                                   \
 224           if (ignore_content)                                                 \
 225             {                                                                 \
 226               lr_ignore_rest (ldfile, 0);                                     \
 227               break;                                                          \
 228             }                                                                 \
 229                                                                               \
 230           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 231           if (arg->tok != tok_string)                                         \
 232             goto err_label;                                                   \
 233           if (name->cat != NULL)                                              \
 234             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 235                       "LC_NAME", #cat);                                       \
 236           else if (!ignore_content && arg->val.str.startmb == NULL)           \
 237             {                                                                 \
 238               lr_error (ldfile, _("%s: unknown character in field `%s'"),     \
 239                         "LC_NAME", #cat);                                     \
 240               name->cat = "";                                                 \
 241             }                                                                 \
 242           else if (!ignore_content)                                           \
 243             name->cat = arg->val.str.startmb;                                 \
 244           break
 245
 246           STR_ELEM (name_fmt);
 247           STR_ELEM (name_gen);
 248           STR_ELEM (name_mr);
 249           STR_ELEM (name_mrs);
 250           STR_ELEM (name_miss);
 251           STR_ELEM (name_ms);
 252
 253         case tok_end:
 254           /* Next we assume `LC_NAME'.  */
 255           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 256           if (arg->tok == tok_eof)
 257             break;
 258           if (arg->tok == tok_eol)
 259             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NAME");
 260           else if (arg->tok != tok_lc_name)
 261             lr_error (ldfile, _("\
 262 %1$s: definition does not end with `END %1$s'"), "LC_NAME");
 263           lr_ignore_rest (ldfile, arg->tok == tok_lc_name);
 264           return;
 265
 266         default:
 267         err_label:
 268           SYNTAX_ERROR (_("%s: syntax error"), "LC_NAME");
 269         }
 270
 271       /* Prepare for the next round.  */
 272       now = lr_token (ldfile, charmap, result, NULL, verbose);
 273       nowtok = now->tok;
 274     }
 275
 276   /* When we come here we reached the end of the file.  */
 277   lr_error (ldfile, _("%s: premature end of file"), "LC_NAME");
 278 }