locale/programs/ld-paper.c

   1 /* Copyright (C) 1998-2013 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 <sys/uio.h>
  26
  27 #include <assert.h>
  28
  29 #include "localedef.h"
  30 #include "localeinfo.h"
  31 #include "locfile.h"
  32
  33
  34 /* The real definition of the struct for the LC_PAPER locale.  */
  35 struct locale_paper_t
  36 {
  37   uint32_t height;
  38   uint32_t width;
  39 };
  40
  41
  42 static void
  43 paper_startup (struct linereader *lr, struct localedef_t *locale,
  44                int ignore_content)
  45 {
  46   if (!ignore_content)
  47     locale->categories[LC_PAPER].paper =
  48       (struct locale_paper_t *) xcalloc (1, sizeof (struct locale_paper_t));
  49
  50   if (lr != NULL)
  51     {
  52       lr->translate_strings = 1;
  53       lr->return_widestr = 0;
  54     }
  55 }
  56
  57
  58 void
  59 paper_finish (struct localedef_t *locale, const struct charmap_t *charmap)
  60 {
  61   struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;
  62   int nothing = 0;
  63
  64   /* Now resolve copying and also handle completely missing definitions.  */
  65   if (paper == NULL)
  66     {
  67       /* First see whether we were supposed to copy.  If yes, find the
  68          actual definition.  */
  69       if (locale->copy_name[LC_PAPER] != NULL)
  70         {
  71           /* Find the copying locale.  This has to happen transitively since
  72              the locale we are copying from might also copying another one.  */
  73           struct localedef_t *from = locale;
  74
  75           do
  76             from = find_locale (LC_PAPER, from->copy_name[LC_PAPER],
  77                                 from->repertoire_name, charmap);
  78           while (from->categories[LC_PAPER].paper == NULL
  79                  && from->copy_name[LC_PAPER] != NULL);
  80
  81           paper = locale->categories[LC_PAPER].paper
  82             = from->categories[LC_PAPER].paper;
  83         }
  84
  85       /* If there is still no definition issue an warning and create an
  86          empty one.  */
  87       if (paper == NULL)
  88         {
  89           if (! be_quiet)
  90             WITH_CUR_LOCALE (error (0, 0, _("\
  91 No definition for %s category found"), "LC_PAPER"));
  92           paper_startup (NULL, locale, 0);
  93           paper = locale->categories[LC_PAPER].paper;
  94           nothing = 1;
  95         }
  96     }
  97
  98   if (paper->height == 0)
  99     {
 100       if (! nothing)
 101         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 102                                 "LC_PAPER", "height"));
 103       /* Use as default values the values from the i18n locale.  */
 104       paper->height = 297;
 105     }
 106
 107   if (paper->width == 0)
 108     {
 109       if (! nothing)
 110         WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
 111                                 "LC_PAPER", "width"));
 112       /* Use as default values the values from the i18n locale.  */
 113       paper->width = 210;
 114     }
 115 }
 116
 117
 118 void
 119 paper_output (struct localedef_t *locale, const struct charmap_t *charmap,
 120               const char *output_path)
 121 {
 122   struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;
 123   struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER)];
 124   struct locale_file data;
 125   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_PAPER)];
 126   size_t cnt = 0;
 127
 128   data.magic = LIMAGIC (LC_PAPER);
 129   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_PAPER);
 130   iov[cnt].iov_base = (void *) &data;
 131   iov[cnt].iov_len = sizeof (data);
 132   ++cnt;
 133
 134   iov[cnt].iov_base = (void *) idx;
 135   iov[cnt].iov_len = sizeof (idx);
 136   ++cnt;
 137
 138   idx[cnt - 2] = iov[cnt - 2].iov_len + iov[cnt - 1].iov_len;
 139   iov[cnt].iov_base = &paper->height;
 140   iov[cnt].iov_len = 4;
 141   ++cnt;
 142
 143   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 144   iov[cnt].iov_base = &paper->width;
 145   iov[cnt].iov_len = 4;
 146   ++cnt;
 147
 148   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 149   iov[cnt].iov_base = (void *) charmap->code_set_name;
 150   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 151   ++cnt;
 152
 153   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER));
 154
 155   write_locale_data (output_path, LC_PAPER, "LC_PAPER",
 156                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER), iov);
 157 }
 158
 159
 160 /* The parser for the LC_PAPER section of the locale definition.  */
 161 void
 162 paper_read (struct linereader *ldfile, struct localedef_t *result,
 163             const struct charmap_t *charmap, const char *repertoire_name,
 164             int ignore_content)
 165 {
 166   struct locale_paper_t *paper;
 167   struct token *now;
 168   struct token *arg;
 169   enum token_t nowtok;
 170
 171   /* The rest of the line containing `LC_PAPER' must be empty.  */
 172   lr_ignore_rest (ldfile, 1);
 173
 174   do
 175     {
 176       now = lr_token (ldfile, charmap, result, NULL, verbose);
 177       nowtok = now->tok;
 178     }
 179   while (nowtok == tok_eol);
 180
 181   /* If we see `copy' now we are almost done.  */
 182   if (nowtok == tok_copy)
 183     {
 184       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_paper,
 185                    LC_PAPER, "LC_PAPER", ignore_content);
 186       return;
 187     }
 188
 189   /* Prepare the data structures.  */
 190   paper_startup (ldfile, result, ignore_content);
 191   paper = result->categories[LC_PAPER].paper;
 192
 193   while (1)
 194     {
 195       /* Of course we don't proceed beyond the end of file.  */
 196       if (nowtok == tok_eof)
 197         break;
 198
 199       /* Ingore empty lines.  */
 200       if (nowtok == tok_eol)
 201         {
 202           now = lr_token (ldfile, charmap, result, NULL, verbose);
 203           nowtok = now->tok;
 204           continue;
 205         }
 206
 207       switch (nowtok)
 208         {
 209 #define INT_ELEM(cat) \
 210         case tok_##cat:                                                       \
 211           /* Ignore the rest of the line if we don't need the input of        \
 212              this line.  */                                                   \
 213           if (ignore_content)                                                 \
 214             {                                                                 \
 215               lr_ignore_rest (ldfile, 0);                                     \
 216               break;                                                          \
 217             }                                                                 \
 218                                                                               \
 219           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 220           if (arg->tok != tok_number)                                         \
 221             goto err_label;                                                   \
 222           else if (paper->cat != 0)                                           \
 223             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 224                       "LC_PAPER", #cat);                                      \
 225           else if (!ignore_content)                                           \
 226             paper->cat = arg->val.num;                                        \
 227           break
 228
 229           INT_ELEM (height);
 230           INT_ELEM (width);
 231
 232         case tok_end:
 233           /* Next we assume `LC_PAPER'.  */
 234           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 235           if (arg->tok == tok_eof)
 236             break;
 237           if (arg->tok == tok_eol)
 238             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_PAPER");
 239           else if (arg->tok != tok_lc_paper)
 240             lr_error (ldfile, _("\
 241 %1$s: definition does not end with `END %1$s'"), "LC_PAPER");
 242           lr_ignore_rest (ldfile, arg->tok == tok_lc_paper);
 243           return;
 244
 245         default:
 246         err_label:
 247           SYNTAX_ERROR (_("%s: syntax error"), "LC_PAPER");
 248         }
 249
 250       /* Prepare for the next round.  */
 251       now = lr_token (ldfile, charmap, result, NULL, verbose);
 252       nowtok = now->tok;
 253     }
 254
 255   /* When we come here we reached the end of the file.  */
 256   lr_error (ldfile, _("%s: premature end of file"), "LC_PAPER");
 257 }