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ld-name.c

/* Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.

   The GNU C Library is free software; you can redistribute it and/or
   modify it under the terms of the GNU Lesser General Public
   License as published by the Free Software Foundation; either
   version 2.1 of the License, or (at your option) any later version.

   The GNU C Library is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   Lesser General Public License for more details.

   You should have received a copy of the GNU Lesser General Public
   License along with the GNU C Library; if not, write to the Free
   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
   02111-1307 USA.  */

#ifdef HAVE_CONFIG_H
# include <config.h>
#endif

#include <langinfo.h>
#include <string.h>
#include <sys/uio.h>

#include <assert.h>

#include "localedef.h"
#include "localeinfo.h"
#include "locfile.h"


/* The real definition of the struct for the LC_NAME locale.  */
struct locale_name_t
{
  const char *name_fmt;
  const char *name_gen;
  const char *name_mr;
  const char *name_mrs;
  const char *name_miss;
  const char *name_ms;
};


static void
name_startup (struct linereader *lr, struct localedef_t *locale,
             int ignore_content)
{
  if (!ignore_content)
    locale->categories[LC_NAME].name =
      (struct locale_name_t *) xcalloc (1, sizeof (struct locale_name_t));

  if (lr != NULL)
    {
      lr->translate_strings = 1;
      lr->return_widestr = 0;
    }
}


void
name_finish (struct localedef_t *locale, const struct charmap_t *charmap)
{
  struct locale_name_t *name = locale->categories[LC_NAME].name;
  int nothing = 0;

  /* Now resolve copying and also handle completely missing definitions.  */
  if (name == NULL)
    {
      /* First see whether we were supposed to copy.  If yes, find the
       actual definition.  */
      if (locale->copy_name[LC_NAME] != NULL)
      {
        /* Find the copying locale.  This has to happen transitively since
           the locale we are copying from might also copying another one.  */
        struct localedef_t *from = locale;

        do
          from = find_locale (LC_NAME, from->copy_name[LC_NAME],
                        from->repertoire_name, charmap);
        while (from->categories[LC_NAME].name == NULL
             && from->copy_name[LC_NAME] != NULL);

        name = locale->categories[LC_NAME].name
          = from->categories[LC_NAME].name;
      }

      /* If there is still no definition issue an warning and create an
       empty one.  */
      if (name == NULL)
      {
        if (! be_quiet)
          WITH_CUR_LOCALE (error (0, 0, _("\
No definition for %s category found"), "LC_NAME"));
        name_startup (NULL, locale, 0);
        name = locale->categories[LC_NAME].name;
        nothing = 1;
      }
    }

  if (name->name_fmt == NULL)
    {
      if (! nothing)
      WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),
                        "LC_NAME", "name_fmt"));
      /* Use as the default value the value of the i18n locale.  */
      name->name_fmt = "%p%t%g%t%m%t%f";
    }
  else
    {
      /* We must check whether the format string contains only the
       allowed escape sequences.  */
      const char *cp = name->name_fmt;

      if (*cp == '\0')
      WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' must not be empty"),
                        "LC_NAME", "name_fmt"));
      else
      while (*cp != '\0')
        {
          if (*cp == '%')
            {
            if (*++cp == 'R')
              /* Romanize-flag.  */
              ++cp;
            if (strchr ("dfFgGlomMpsSt", *cp) == NULL)
              {
                WITH_CUR_LOCALE (error (0, 0, _("\
%s: invalid escape sequence in field `%s'"), "LC_NAME", "name_fmt"));
                break;
              }
            }
          ++cp;
        }
    }

#define TEST_ELEM(cat) \
  if (name->cat == NULL)                                          \
    {                                                       \
      if (verbose && ! nothing)                                         \
      WITH_CUR_LOCALE (error (0, 0, _("%s: field `%s' not defined"),          \
                        "LC_NAME", #cat));                        \
      name->cat = "";                                             \
    }

  TEST_ELEM (name_gen);
  TEST_ELEM (name_mr);
  TEST_ELEM (name_mrs);
  TEST_ELEM (name_miss);
  TEST_ELEM (name_ms);
}


void
name_output (struct localedef_t *locale, const struct charmap_t *charmap,
           const char *output_path)
{
  struct locale_name_t *name = locale->categories[LC_NAME].name;
  struct iovec iov[2 + _NL_ITEM_INDEX (_NL_NUM_LC_NAME)];
  struct locale_file data;
  uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NAME)];
  size_t cnt = 0;

  data.magic = LIMAGIC (LC_NAME);
  data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NAME);
  iov[cnt].iov_base = (void *) &data;
  iov[cnt].iov_len = sizeof (data);
  ++cnt;

  iov[cnt].iov_base = (void *) idx;
  iov[cnt].iov_len = sizeof (idx);
  ++cnt;

  idx[cnt - 2] = iov[0].iov_len + iov[1].iov_len;
  iov[cnt].iov_base = (void *) name->name_fmt;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) name->name_gen;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) name->name_mr;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) name->name_mrs;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) name->name_miss;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) name->name_ms;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) charmap->code_set_name;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;
  ++cnt;

  assert (cnt == 2 + _NL_ITEM_INDEX (_NL_NUM_LC_NAME));

  write_locale_data (output_path, LC_NAME, "LC_NAME",
                 2 + _NL_ITEM_INDEX (_NL_NUM_LC_NAME), iov);
}


/* The parser for the LC_NAME section of the locale definition.  */
void
name_read (struct linereader *ldfile, struct localedef_t *result,
         const struct charmap_t *charmap, const char *repertoire_name,
         int ignore_content)
{
  struct locale_name_t *name;
  struct token *now;
  struct token *arg;
  enum token_t nowtok;

  /* The rest of the line containing `LC_NAME' must be empty.  */
  lr_ignore_rest (ldfile, 1);

  do
    {
      now = lr_token (ldfile, charmap, result, NULL, verbose);
      nowtok = now->tok;
    }
  while (nowtok == tok_eol);

  /* If we see `copy' now we are almost done.  */
  if (nowtok == tok_copy)
    {
      handle_copy (ldfile, charmap, repertoire_name, result, tok_lc_name,
               LC_NAME, "LC_NAME", ignore_content);
      return;
    }

  /* Prepare the data structures.  */
  name_startup (ldfile, result, ignore_content);
  name = result->categories[LC_NAME].name;

  while (1)
    {
      /* Of course we don't proceed beyond the end of file.  */
      if (nowtok == tok_eof)
      break;

      /* Ignore empty lines.  */
      if (nowtok == tok_eol)
      {
        now = lr_token (ldfile, charmap, result, NULL, verbose);
        nowtok = now->tok;
        continue;
      }

      switch (nowtok)
      {
#define STR_ELEM(cat) \
      case tok_##cat:                                             \
        /* Ignore the rest of the line if we don't need the input of          \
           this line.  */                                         \
        if (ignore_content)                                       \
          {                                                 \
            lr_ignore_rest (ldfile, 0);                           \
            break;                                                \
          }                                                 \
                                                            \
        arg = lr_token (ldfile, charmap, result, NULL, verbose);        \
        if (arg->tok != tok_string)                               \
          goto err_label;                                         \
        if (name->cat != NULL)                                    \
          lr_error (ldfile, _("%s: field `%s' declared more than once"),    \
                  "LC_NAME", #cat);                               \
        else if (!ignore_content && arg->val.str.startmb == NULL)       \
          {                                                 \
            lr_error (ldfile, _("%s: unknown character in field `%s'"),     \
                  "LC_NAME", #cat);                         \
            name->cat = "";                                       \
          }                                                 \
        else if (!ignore_content)                                 \
          name->cat = arg->val.str.startmb;                             \
        break

        STR_ELEM (name_fmt);
        STR_ELEM (name_gen);
        STR_ELEM (name_mr);
        STR_ELEM (name_mrs);
        STR_ELEM (name_miss);
        STR_ELEM (name_ms);

      case tok_end:
        /* Next we assume `LC_NAME'.  */
        arg = lr_token (ldfile, charmap, result, NULL, verbose);
        if (arg->tok == tok_eof)
          break;
        if (arg->tok == tok_eol)
          lr_error (ldfile, _("%s: incomplete `END' line"), "LC_NAME");
        else if (arg->tok != tok_lc_name)
          lr_error (ldfile, _("\
%1$s: definition does not end with `END %1$s'"), "LC_NAME");
        lr_ignore_rest (ldfile, arg->tok == tok_lc_name);
        return;

      default:
      err_label:
        SYNTAX_ERROR (_("%s: syntax error"), "LC_NAME");
      }

      /* Prepare for the next round.  */
      now = lr_token (ldfile, charmap, result, NULL, verbose);
      nowtok = now->tok;
    }

  /* When we come here we reached the end of the file.  */
  lr_error (ldfile, _("%s: premature end of file"), "LC_NAME");
}

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