locale/programs/ld-paper.c

   1 /* Copyright (C) 1998-2017 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3    Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.
   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 <error.h>
  23 #include <langinfo.h>
  24 #include <string.h>
  25 #include <stdint.h>
  26 #include <sys/uio.h>
  27
  28 #include <assert.h>
  29
  30 #include "localedef.h"
  31 #include "localeinfo.h"
  32 #include "locfile.h"
  33
  34
  35 /* The real definition of the struct for the LC_PAPER locale.  */
  36 struct locale_paper_t
  37 {
  38   uint32_t height;
  39   uint32_t width;
  40 };
  41
  42
  43 static void
  44 paper_startup (struct linereader *lr, struct localedef_t *locale,
  45                int ignore_content)
  46 {
  47   if (!ignore_content)
  48     locale->categories[LC_PAPER].paper =
  49       (struct locale_paper_t *) xcalloc (1, sizeof (struct locale_paper_t));
  50
  51   if (lr != NULL)
  52     {
  53       lr->translate_strings = 1;
  54       lr->return_widestr = 0;
  55     }
  56 }
  57
  58
  59 void
  60 paper_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  61 {
  62   struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;
  63   int nothing = 0;
  64
  65   /* Now resolve copying and also handle completely missing definitions.  */
  66   if (paper == NULL)
  67     {
  68       /* First see whether we were supposed to copy.  If yes, find the
  69          actual definition.  */
  70       if (locale->copy_name[LC_PAPER] != NULL)
  71         {
  72           /* Find the copying locale.  This has to happen transitively since
  73              the locale we are copying from might also copying another one.  */
  74           struct localedef_t *from = locale;
  75
  76           do
  77             from = find_locale (LC_PAPER, from->copy_name[LC_PAPER],
  78                                 from->repertoire_name, charmap);
  79           while (from->categories[LC_PAPER].paper == NULL
  80                  && from->copy_name[LC_PAPER] != NULL);
  81
  82           paper = locale->categories[LC_PAPER].paper
  83             = from->categories[LC_PAPER].paper;
  84         }
  85
  86       /* If there is still no definition issue an warning and create an
  87          empty one.  */
  88       if (paper == NULL)
  89         {
  90           if (! be_quiet)
  91             WITH_CUR_LOCALE (error (0, 0, _("\
  92 No definition for %s category found"), "LC_PAPER"));
  93           paper_startup (NULL, locale, 0);
  94           paper = locale->categories[LC_PAPER].paper;
  95           nothing = 1;
  96         }
  97     }
  98
  99   if (paper->height == 0)
 100     {
 101       if (! nothing)
 102         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 103                                 "LC_PAPER", "height"));
 104       /* Use as default values the values from the i18n locale.  */
 105       paper->height = 297;
 106     }
 107
 108   if (paper->width == 0)
 109     {
 110       if (! nothing)
 111         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 112                                 "LC_PAPER", "width"));
 113       /* Use as default values the values from the i18n locale.  */
 114       paper->width = 210;
 115     }
 116 }
 117
 118
 119 void
 120 paper_output (struct localedef_t *locale, const struct charmap_t *charmap,
 121               const char *output_path)
 122 {
 123   struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;
 124   struct locale_file file;
 125
 126   init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_PAPER));
 127   add_locale_uint32 (&file, paper->height);
 128   add_locale_uint32 (&file, paper->width);
 129   add_locale_string (&file, charmap->code_set_name);
 130   write_locale_data (output_path, LC_PAPER, "LC_PAPER", &file);
 131 }
 132
 133
 134 /* The parser for the LC_PAPER section of the locale definition.  */
 135 void
 136 paper_read (struct linereader *ldfile, struct localedef_t *result,
 137             const struct charmap_t *charmap, const char *repertoire_name,
 138             int ignore_content)
 139 {
 140   struct locale_paper_t *paper;
 141   struct token *now;
 142   struct token *arg;
 143   enum token_t nowtok;
 144
 145   /* The rest of the line containing `LC_PAPER' must be empty.  */
 146   lr_ignore_rest (ldfile, 1);
 147
 148   do
 149     {
 150       now = lr_token (ldfile, charmap, result, NULL, verbose);
 151       nowtok = now->tok;
 152     }
 153   while (nowtok == tok_eol);
 154
 155   /* If we see `copy' now we are almost done.  */
 156   if (nowtok == tok_copy)
 157     {
 158       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_paper,
 159                    LC_PAPER, "LC_PAPER", ignore_content);
 160       return;
 161     }
 162
 163   /* Prepare the data structures.  */
 164   paper_startup (ldfile, result, ignore_content);
 165   paper = result->categories[LC_PAPER].paper;
 166
 167   while (1)
 168     {
 169       /* Of course we don't proceed beyond the end of file.  */
 170       if (nowtok == tok_eof)
 171         break;
 172
 173       /* Ingore empty lines.  */
 174       if (nowtok == tok_eol)
 175         {
 176           now = lr_token (ldfile, charmap, result, NULL, verbose);
 177           nowtok = now->tok;
 178           continue;
 179         }
 180
 181       switch (nowtok)
 182         {
 183 #define INT_ELEM(cat) \
 184         case tok_##cat:                                                       \
 185           /* Ignore the rest of the line if we don't need the input of        \
 186              this line.  */                                                   \
 187           if (ignore_content)                                                 \
 188             {                                                                 \
 189               lr_ignore_rest (ldfile, 0);                                     \
 190               break;                                                          \
 191             }                                                                 \
 192                                                                               \
 193           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 194           if (arg->tok != tok_number)                                         \
 195             goto err_label;                                                   \
 196           else if (paper->cat != 0)                                           \
 197             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 198                       "LC_PAPER", #cat);                                      \
 199           else if (!ignore_content)                                           \
 200             paper->cat = arg->val.num;                                        \
 201           break
 202
 203           INT_ELEM (height);
 204           INT_ELEM (width);
 205
 206         case tok_end:
 207           /* Next we assume `LC_PAPER'.  */
 208           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 209           if (arg->tok == tok_eof)
 210             break;
 211           if (arg->tok == tok_eol)
 212             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_PAPER");
 213           else if (arg->tok != tok_lc_paper)
 214             lr_error (ldfile, _("\
 215 %1$s: definition does not end with `END %1$s'"), "LC_PAPER");
 216           lr_ignore_rest (ldfile, arg->tok == tok_lc_paper);
 217           return;
 218
 219         default:
 220         err_label:
 221           SYNTAX_ERROR (_("%s: syntax error"), "LC_PAPER");
 222         }
 223
 224       /* Prepare for the next round.  */
 225       now = lr_token (ldfile, charmap, result, NULL, verbose);
 226       nowtok = now->tok;
 227     }
 228
 229   /* When we come here we reached the end of the file.  */
 230   lr_error (ldfile, _("%s: premature end of file"), "LC_PAPER");
 231 }