locale/programs/ld-paper.c

   1 /* Copyright (C) 1998,1999,2000,2001,2002,2005 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, write to the Free Software Foundation,
  17    Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  18
  19 #ifdef HAVE_CONFIG_H
  20 # include <config.h>
  21 #endif
  22
  23 #include <error.h>
  24 #include <langinfo.h>
  25 #include <string.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 iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER)];
 125   struct locale_file data;
 126   uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_PAPER)];
 127   size_t cnt = 0;
 128
 129   data.magic = LIMAGIC (LC_PAPER);
 130   data.n = _NL_ITEM_INDEX (_NL_NUM_LC_PAPER);
 131   iov[cnt].iov_base = (void *) &data;
 132   iov[cnt].iov_len = sizeof (data);
 133   ++cnt;
 134
 135   iov[cnt].iov_base = (void *) idx;
 136   iov[cnt].iov_len = sizeof (idx);
 137   ++cnt;
 138
 139   idx[cnt - 2] = iov[cnt - 2].iov_len + iov[cnt - 1].iov_len;
 140   iov[cnt].iov_base = &paper->height;
 141   iov[cnt].iov_len = 4;
 142   ++cnt;
 143
 144   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 145   iov[cnt].iov_base = &paper->width;
 146   iov[cnt].iov_len = 4;
 147   ++cnt;
 148
 149   idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
 150   iov[cnt].iov_base = (void *) charmap->code_set_name;
 151   iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
 152   ++cnt;
 153
 154   assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER));
 155
 156   write_locale_data (output_path, LC_PAPER, "LC_PAPER",
 157                      2 + _NL_ITEM_INDEX (_NL_NUM_LC_PAPER), iov);
 158 }
 159
 160
 161 /* The parser for the LC_PAPER section of the locale definition.  */
 162 void
 163 paper_read (struct linereader *ldfile, struct localedef_t *result,
 164             const struct charmap_t *charmap, const char *repertoire_name,
 165             int ignore_content)
 166 {
 167   struct locale_paper_t *paper;
 168   struct token *now;
 169   struct token *arg;
 170   enum token_t nowtok;
 171
 172   /* The rest of the line containing `LC_PAPER' must be empty.  */
 173   lr_ignore_rest (ldfile, 1);
 174
 175   do
 176     {
 177       now = lr_token (ldfile, charmap, result, NULL, verbose);
 178       nowtok = now->tok;
 179     }
 180   while (nowtok == tok_eol);
 181
 182   /* If we see `copy' now we are almost done.  */
 183   if (nowtok == tok_copy)
 184     {
 185       handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_paper,
 186                    LC_PAPER, "LC_PAPER", ignore_content);
 187       return;
 188     }
 189
 190   /* Prepare the data structures.  */
 191   paper_startup (ldfile, result, ignore_content);
 192   paper = result->categories[LC_PAPER].paper;
 193
 194   while (1)
 195     {
 196       /* Of course we don't proceed beyond the end of file.  */
 197       if (nowtok == tok_eof)
 198         break;
 199
 200       /* Ingore empty lines.  */
 201       if (nowtok == tok_eol)
 202         {
 203           now = lr_token (ldfile, charmap, result, NULL, verbose);
 204           nowtok = now->tok;
 205           continue;
 206         }
 207
 208       switch (nowtok)
 209         {
 210 #define INT_ELEM(cat) \
 211         case tok_##cat:                                                       \
 212           /* Ignore the rest of the line if we don't need the input of        \
 213              this line.  */                                                   \
 214           if (ignore_content)                                                 \
 215             {                                                                 \
 216               lr_ignore_rest (ldfile, 0);                                     \
 217               break;                                                          \
 218             }                                                                 \
 219                                                                               \
 220           arg = lr_token (ldfile, charmap, result, NULL, verbose);            \
 221           if (arg->tok != tok_number)                                         \
 222             goto err_label;                                                   \
 223           else if (paper->cat != 0)                                           \
 224             lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
 225                       "LC_PAPER", #cat);                                      \
 226           else if (!ignore_content)                                           \
 227             paper->cat = arg->val.num;                                        \
 228           break
 229
 230           INT_ELEM (height);
 231           INT_ELEM (width);
 232
 233         case tok_end:
 234           /* Next we assume `LC_PAPER'.  */
 235           arg = lr_token (ldfile, charmap, result, NULL, verbose);
 236           if (arg->tok == tok_eof)
 237             break;
 238           if (arg->tok == tok_eol)
 239             lr_error (ldfile, _("%s: incomplete `END' line"), "LC_PAPER");
 240           else if (arg->tok != tok_lc_paper)
 241             lr_error (ldfile, _("\
 242 %1$s: definition does not end with `END %1$s'"), "LC_PAPER");
 243           lr_ignore_rest (ldfile, arg->tok == tok_lc_paper);
 244           return;
 245
 246         default:
 247         err_label:
 248           SYNTAX_ERROR (_("%s: syntax error"), "LC_PAPER");
 249         }
 250
 251       /* Prepare for the next round.  */
 252       now = lr_token (ldfile, charmap, result, NULL, verbose);
 253       nowtok = now->tok;
 254     }
 255
 256   /* When we come here we reached the end of the file.  */
 257   lr_error (ldfile, _("%s: premature end of file"), "LC_PAPER");
 258 }