/* Copyright (C) 1998-2018 Free Software Foundation, Inc.

   This file is part of the GNU C Library.

   Contributed by Ulrich Drepper <drepper@cygnus.com>, 1998.

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published

   by the Free Software Foundation; version 2 of the License, or

   (at your option) any later version.

   This program 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 General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, see <http://www.gnu.org/licenses/>.  */

#ifdef HAVE_CONFIG_H

# include <config.h>

#endif

#include <langinfo.h>

#include <string.h>

#include <stdint.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_PAPER locale.  */

struct locale_paper_t

{

  uint32_t height;

  uint32_t width;

};

static void

paper_startup (struct linereader *lr, struct localedef_t *locale,

	       int ignore_content)

{

  if (!ignore_content)

    locale->categories[LC_PAPER].paper =

      (struct locale_paper_t *) xcalloc (1, sizeof (struct locale_paper_t));

  if (lr != NULL)

    {

      lr->translate_strings = 1;

      lr->return_widestr = 0;

    }

}

void

paper_finish (struct localedef_t *locale, const struct charmap_t *charmap)

{

  struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;

  int nothing = 0;

  /* Now resolve copying and also handle completely missing definitions.  */

  if (paper == NULL)

    {

      /* First see whether we were supposed to copy.  If yes, find the

	 actual definition.  */

      if (locale->copy_name[LC_PAPER] != 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_PAPER, from->copy_name[LC_PAPER],

				from->repertoire_name, charmap);

	  while (from->categories[LC_PAPER].paper == NULL

		 && from->copy_name[LC_PAPER] != NULL);

	  paper = locale->categories[LC_PAPER].paper

	    = from->categories[LC_PAPER].paper;

	}

      /* If there is still no definition issue an warning and create an

	 empty one.  */

      if (paper == NULL)

	{

	  record_warning (_("\

No definition for %s category found"), "LC_PAPER");

	  paper_startup (NULL, locale, 0);

	  paper = locale->categories[LC_PAPER].paper;

	  nothing = 1;

	}

    }

  if (paper->height == 0)

    {

      if (! nothing)

	record_error (0, 0, _("%s: field `%s' not defined"),

		      "LC_PAPER", "height");

      /* Use as default values the values from the i18n locale.  */

      paper->height = 297;

    }

  if (paper->width == 0)

    {

      if (! nothing)

	record_error (0, 0, _("%s: field `%s' not defined"),

		      "LC_PAPER", "width");

      /* Use as default values the values from the i18n locale.  */

      paper->width = 210;

    }

}

void

paper_output (struct localedef_t *locale, const struct charmap_t *charmap,

	      const char *output_path)

{

  struct locale_paper_t *paper = locale->categories[LC_PAPER].paper;

  struct locale_file file;

  init_locale_data (&file, _NL_ITEM_INDEX (_NL_NUM_LC_PAPER));

  add_locale_uint32 (&file, paper->height);

  add_locale_uint32 (&file, paper->width);

  add_locale_string (&file, charmap->code_set_name);

  write_locale_data (output_path, LC_PAPER, "LC_PAPER", &file;;

}

/* The parser for the LC_PAPER section of the locale definition.  */

void

paper_read (struct linereader *ldfile, struct localedef_t *result,

	    const struct charmap_t *charmap, const char *repertoire_name,

	    int ignore_content)

{

  struct locale_paper_t *paper;

  struct token *now;

  struct token *arg;

  enum token_t nowtok;

  /* The rest of the line containing `LC_PAPER' 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_paper,

		   LC_PAPER, "LC_PAPER", ignore_content);

      return;

    }

  /* Prepare the data structures.  */

  paper_startup (ldfile, result, ignore_content);

  paper = result->categories[LC_PAPER].paper;

  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 INT_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_number)					      \

	    goto err_label;						      \

	  else if (paper->cat != 0)					      \

	    lr_error (ldfile, _("%s: field `%s' declared more than once"),    \

		      "LC_PAPER", #cat);				      \

	  else if (!ignore_content)					      \

	    paper->cat = arg->val.num;					      \

	  break

	  INT_ELEM (height);

	  INT_ELEM (width);

	case tok_end:

	  /* Next we assume `LC_PAPER'.  */

	  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_PAPER");

	  else if (arg->tok != tok_lc_paper)

	    lr_error (ldfile, _("\

%1$s: definition does not end with `END %1$s'"), "LC_PAPER");

	  lr_ignore_rest (ldfile, arg->tok == tok_lc_paper);

	  return;

	default:

	err_label:

	  SYNTAX_ERROR (_("%s: syntax error"), "LC_PAPER");

	}

      /* 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_PAPER");

}