/* xgettext PO and JavaProperties backends.

   Copyright (C) 1995-1998, 2000-2003, 2005-2006, 2008-2009, 2015 Free

   Software Foundation, Inc.

   This file was written by Peter Miller <millerp@canb.auug.org.au>

   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; either version 3 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

/* Specification.  */

#include "x-po.h"

#include "x-properties.h"

#include "x-stringtable.h"

#include <stdio.h>

#include <stdlib.h>

#include <stdbool.h>

#include <string.h>

#include "message.h"

#include "xgettext.h"

#include "xalloc.h"

#include "read-catalog.h"

#include "read-po.h"

#include "read-properties.h"

#include "read-stringtable.h"

#include "po-lex.h"

#include "gettext.h"

/* A convenience macro.  I don't like writing gettext() every time.  */

#define _(str) gettext (str)

/* The charset found in the header entry.  */

static char *header_charset;

/* Define a subclass extract_catalog_reader_ty of default_catalog_reader_ty.  */

static void

extract_add_message (default_catalog_reader_ty *this,

                     char *msgctxt,

                     char *msgid,

                     lex_pos_ty *msgid_pos,

                     char *msgid_plural,

                     char *msgstr, size_t msgstr_len,

                     lex_pos_ty *msgstr_pos,

                     char *prev_msgctxt,

                     char *prev_msgid,

                     char *prev_msgid_plural,

                     bool force_fuzzy, bool obsolete)

{

  /* See whether we shall exclude this message.  */

  if (exclude != NULL && message_list_search (exclude, msgctxt, msgid) != NULL)

    goto discard;

  /* If the msgid is the empty string, it is the old header.  Throw it

     away, we have constructed a new one.  Only remember its charset.

     But if no new one was constructed, keep the old header.  This is useful

     because the old header may contain a charset= directive.  */

  if (msgctxt == NULL && *msgid == '\0' && !xgettext_omit_header)

    {

      {

        const char *charsetstr = strstr (msgstr, "charset=");

        if (charsetstr != NULL)

          {

            size_t len;

            char *charset;

            charsetstr += strlen ("charset=");

            len = strcspn (charsetstr, " \t\n");

            charset = XNMALLOC (len + 1, char);

            memcpy (charset, charsetstr, len);

            charset[len] = '\0';

            if (header_charset != NULL)

              free (header_charset);

            header_charset = charset;

          }

      }

     discard:

      if (msgctxt != NULL)

        free (msgctxt);

      free (msgid);

      if (msgid_plural != NULL)

        free (msgid_plural);

      free (msgstr);

      if (prev_msgctxt != NULL)

        free (prev_msgctxt);

      if (prev_msgid != NULL)

        free (prev_msgid);

      if (prev_msgid_plural != NULL)

        free (prev_msgid_plural);

      return;

    }

  /* Invoke superclass method.  */

  default_add_message (this, msgctxt, msgid, msgid_pos, msgid_plural,

                       msgstr, msgstr_len, msgstr_pos,

                       prev_msgctxt, prev_msgid, prev_msgid_plural,

                       force_fuzzy, obsolete);

}

/* So that the one parser can be used for multiple programs, and also

   use good data hiding and encapsulation practices, an object

   oriented approach has been taken.  An object instance is allocated,

   and all actions resulting from the parse will be through

   invocations of method functions of that object.  */

static default_catalog_reader_class_ty extract_methods =

{

  {

    sizeof (default_catalog_reader_ty),

    default_constructor,

    default_destructor,

    default_parse_brief,

    default_parse_debrief,

    default_directive_domain,

    default_directive_message,

    default_comment,

    default_comment_dot,

    default_comment_filepos,

    default_comment_special

  },

  default_set_domain, /* set_domain */

  extract_add_message, /* add_message */

  NULL /* frob_new_message */

};

static void

extract (FILE *fp,

         const char *real_filename, const char *logical_filename,

         catalog_input_format_ty input_syntax,

         msgdomain_list_ty *mdlp)

{

  default_catalog_reader_ty *pop;

  header_charset = NULL;

  pop = default_catalog_reader_alloc (&extract_methods);

  pop->handle_comments = true;

  pop->allow_domain_directives = false;

  pop->allow_duplicates = false;

  pop->allow_duplicates_if_same_msgstr = true;

  pop->file_name = real_filename;

  pop->mdlp = NULL;

  pop->mlp = mdlp->item[0]->messages;

  catalog_reader_parse ((abstract_catalog_reader_ty *) pop, fp, real_filename,

                        logical_filename, input_syntax);

  catalog_reader_free ((abstract_catalog_reader_ty *) pop);

  if (header_charset != NULL)

    {

      if (!xgettext_omit_header)

        {

          /* Put the old charset into the freshly constructed header entry.  */

          message_ty *mp =

            message_list_search (mdlp->item[0]->messages, NULL, "");

          if (mp != NULL && !mp->obsolete)

            {

              const char *header = mp->msgstr;

              if (header != NULL)

                {

                  const char *charsetstr = strstr (header, "charset=");

                  if (charsetstr != NULL)

                    {

                      size_t len, len1, len2, len3;

                      char *new_header;

                      charsetstr += strlen ("charset=");

                      len = strcspn (charsetstr, " \t\n");

                      len1 = charsetstr - header;

                      len2 = strlen (header_charset);

                      len3 = (header + strlen (header)) - (charsetstr + len);

                      new_header = XNMALLOC (len1 + len2 + len3 + 1, char);

                      memcpy (new_header, header, len1);

                      memcpy (new_header + len1, header_charset, len2);

                      memcpy (new_header + len1 + len2, charsetstr + len, len3 + 1);

                      mp->msgstr = new_header;

                      mp->msgstr_len = len1 + len2 + len3 + 1;

                    }

                }

            }

        }

      free (header_charset);

    }

}

void

extract_po (FILE *fp,

            const char *real_filename, const char *logical_filename,

            flag_context_list_table_ty *flag_table,

            msgdomain_list_ty *mdlp)

{

  extract (fp, real_filename,  logical_filename, &input_format_po, mdlp);

}

void

extract_properties (FILE *fp,

                    const char *real_filename, const char *logical_filename,

                    flag_context_list_table_ty *flag_table,

                    msgdomain_list_ty *mdlp)

{

  extract (fp, real_filename,  logical_filename, &input_format_properties,

           mdlp);

}

void

extract_stringtable (FILE *fp,

                     const char *real_filename, const char *logical_filename,

                     flag_context_list_table_ty *flag_table,

                     msgdomain_list_ty *mdlp)

{

  extract (fp, real_filename,  logical_filename, &input_format_stringtable,

           mdlp);

}