Update.

[glibc.git] / locale / programs / ld-numeric.c

/* Copyright (C) 1995-1999, 2000, 2001 Free Software Foundation, Inc.
   This file is part of the GNU C Library.
   Contributed by Ulrich Drepper <drepper@gnu.org>, 1995.

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


/* The real definition of the struct for the LC_NUMERIC locale.  */
struct locale_numeric_t
{
  const char *decimal_point;
  const char *thousands_sep;
  char *grouping;
  size_t grouping_len;
  uint32_t decimal_point_wc;
  uint32_t thousands_sep_wc;
};


static void
numeric_startup (struct linereader *lr, struct localedef_t *locale,
                 int ignore_content)
{
  if (!ignore_content)
    {
      locale->categories[LC_NUMERIC].numeric =
        (struct locale_numeric_t *) xcalloc (1,
                                             sizeof (struct locale_numeric_t));
    }

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


void
numeric_finish (struct localedef_t *locale, const struct charmap_t *charmap)
{
  struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  int nothing = 0;

  /* Now resolve copying and also handle completely missing definitions.  */
  if (numeric == NULL)
    {
      /* First see whether we were supposed to copy.  If yes, find the
         actual definition.  */
      if (locale->copy_name[LC_NUMERIC] != 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_NUMERIC, from->copy_name[LC_NUMERIC],
                                from->repertoire_name, charmap);
          while (from->categories[LC_NUMERIC].numeric == NULL
                 && from->copy_name[LC_NUMERIC] != NULL);

          numeric = locale->categories[LC_NUMERIC].numeric
            = from->categories[LC_NUMERIC].numeric;
        }

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

  /* The decimal point must not be empty.  This is not said explicitly
     in POSIX but ANSI C (ISO/IEC 9899) says in 4.4.2.1 it has to be
     != "".  */
  if (numeric->decimal_point == NULL)
    {
      if (! be_quiet && ! nothing)
        error (0, 0, _("%s: field `%s' not defined"),
               "LC_NUMERIC", "decimal_point");
      numeric->decimal_point = ".";
    }
  else if (numeric->decimal_point[0] == '\0' && ! be_quiet && ! nothing)
    {
      error (0, 0, _("\
%s: value for field `%s' must not be the empty string"),
             "LC_NUMERIC", "decimal_point");
    }
  if (numeric->decimal_point_wc == L'\0')
    numeric->decimal_point_wc = L'.';

  if (numeric->grouping_len == 0 && ! be_quiet && ! nothing)
    error (0, 0, _("%s: field `%s' not defined"), "LC_NUMERIC", "grouping");
}


void
numeric_output (struct localedef_t *locale, const struct charmap_t *charmap,
                const char *output_path)
{
  struct locale_numeric_t *numeric = locale->categories[LC_NUMERIC].numeric;
  struct iovec iov[3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
  struct locale_file data;
  uint32_t idx[_NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC)];
  size_t cnt = 0;

  data.magic = LIMAGIC (LC_NUMERIC);
  data.n = _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC);
  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 *) (numeric->decimal_point ?: "");
  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 *) (numeric->thousands_sep ?: "");
  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 = numeric->grouping;
  iov[cnt].iov_len = numeric->grouping_len;
  ++cnt;

  idx[cnt - 2] = idx[cnt - 3] + iov[cnt - 1].iov_len;

  /* Align following data */
  iov[cnt].iov_base = (void *) "\0\0";
  iov[cnt].iov_len = ((idx[cnt - 2] + 3) & ~3) - idx[cnt - 2];
  idx[cnt - 2] = (idx[cnt - 2] + 3) & ~3;
  ++cnt;

  iov[cnt].iov_base = (void *) &numeric->decimal_point_wc;
  iov[cnt].iov_len = sizeof (uint32_t);
  ++cnt;

  idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) &numeric->thousands_sep_wc;
  iov[cnt].iov_len = sizeof (uint32_t);
  ++cnt;

  idx[cnt - 3] = idx[cnt - 4] + iov[cnt - 1].iov_len;
  iov[cnt].iov_base = (void *) charmap->code_set_name;
  iov[cnt].iov_len = strlen (iov[cnt].iov_base) + 1;

  assert (cnt + 1 == 3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC));

  write_locale_data (output_path, "LC_NUMERIC",
                     3 + _NL_ITEM_INDEX (_NL_NUM_LC_NUMERIC), iov);
}


/* The parser for the LC_NUMERIC section of the locale definition.  */
void
numeric_read (struct linereader *ldfile, struct localedef_t *result,
              const struct charmap_t *charmap, const char *repertoire_name,
              int ignore_content)
{
  struct repertoire_t *repertoire = NULL;
  struct locale_numeric_t *numeric;
  struct token *now;
  enum token_t nowtok;

  /* Get the repertoire we have to use.  */
  if (repertoire_name != NULL)
    repertoire = repertoire_read (repertoire_name);

  /* The rest of the line containing `LC_NUMERIC' must be free.  */
  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_numeric,
                   LC_NUMERIC, "LC_NUMERIC", ignore_content);
      return;
    }

  /* Prepare the data structures.  */
  numeric_startup (ldfile, result, ignore_content);
  numeric = result->categories[LC_NUMERIC].numeric;

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

      /* Ingore 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;                                                          \
            }                                                                 \
                                                                              \
          ldfile->return_widestr = 1;                                         \
          now = lr_token (ldfile, charmap, result, repertoire, verbose);              \
          if (now->tok != tok_string)                                         \
            goto err_label;                                                   \
          if (numeric->cat != NULL)                                           \
            lr_error (ldfile, _("\
%s: field `%s' declared more than once"), "LC_NUMERIC", #cat);                \
          else if (!ignore_content && now->val.str.startmb == NULL)           \
            {                                                                 \
              lr_error (ldfile, _("\
%s: unknown character in field `%s'"), "LC_NUMERIC", #cat);                   \
              numeric->cat = "";                                              \
              numeric->cat##_wc = L'\0';                                      \
            }                                                                 \
          else if (now->val.str.startwc != NULL && now->val.str.lenwc > 2)    \
            {                                                                 \
              lr_error (ldfile, _("\
%s: value for field `%s' must be a single character"), "LC_NUMERIC", #cat);   \
            }                                                                 \
          else if (!ignore_content)                                           \
            {                                                                 \
              numeric->cat = now->val.str.startmb;                            \
                                                                              \
              if (now->val.str.startwc != NULL)                               \
                numeric->cat##_wc = *now->val.str.startwc;                    \
            }                                                                 \
          ldfile->return_widestr = 0;                                         \
          break

          STR_ELEM (decimal_point);
          STR_ELEM (thousands_sep);

        case tok_grouping:
          /* 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;
            }

          now = lr_token (ldfile, charmap, result, NULL, verbose);
          if (now->tok != tok_minus1 && now->tok != tok_number)
            goto err_label;
          else
            {
              size_t act = 0;
              size_t max = 10;
              char *grouping = ignore_content ? NULL : xmalloc (max);

              do
                {
                  if (act + 1 >= max)
                    {
                      max *= 2;
                      grouping = xrealloc (grouping, max);
                    }

                  if (act > 0 && grouping[act - 1] == '\177')
                    {
                      lr_error (ldfile, _("\
%s: `-1' must be last entry in `%s' field"), "LC_NUMERIC", "grouping");
                      lr_ignore_rest (ldfile, 0);
                      break;
                    }

                  if (now->tok == tok_minus1)
                    {
                      if (!ignore_content)
                        grouping[act++] = '\177';
                    }
                  else if (now->val.num == 0)
                    {
                      /* A value of 0 disables grouping from here on but
                         we must not store a NUL character since this
                         terminates the string.  Use something different
                         which must not be used otherwise.  */
                      if (!ignore_content)
                        grouping[act++] = '\377';
                    }
                  else if (now->val.num > 126)
                    lr_error (ldfile, _("\
%s: values for field `%s' must be smaller than 127"),
                              "LC_NUMERIC", "grouping");
                  else if (!ignore_content)
                    grouping[act++] = now->val.num;

                  /* Next must be semicolon.  */
                  now = lr_token (ldfile, charmap, result, NULL, verbose);
                  if (now->tok != tok_semicolon)
                    break;

                  now = lr_token (ldfile, charmap, result, NULL, verbose);
                }
              while (now->tok == tok_minus1 || now->tok == tok_number);

              if (now->tok != tok_eol)
                goto err_label;

              if (!ignore_content)
                {
                  grouping[act++] = '\0';

                  numeric->grouping = xrealloc (grouping, act);
                  numeric->grouping_len = act;
                }
            }
          break;

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

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

      /* 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_NUMERIC");
}