// This file is part of the AspectC++ compiler 'ac++'.
// Copyright (C) 1999-2003  The 'ac++' developers (see aspectc.org)
//
// 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 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, write to the Free
// Software Foundation, Inc., 59 Temple Place, Suite 330, Boston,
// MA  02111-1307  USA

#ifndef __XmlModelWriter_h__
#define __XmlModelWriter_h__

#include "Elements.h"
#include "ACModelFile.h"
#include <libxml/xmlsave.h>
#include <unistd.h>

class XmlModelWriter {
public:
  // save project model as an XML file
  bool write(ProjectModel &model, const ACModelFile &file) {
    SaveContext context;
    xmlDocPtr doc = model.xml_doc();
    if (!doc) {
      doc = xmlNewDoc((const xmlChar *)"1.0");
      doc->children =
          xmlNewDocNode(doc, NULL, (const xmlChar *)"ac-model", NULL);
      xmlNewNs(doc->children,
               (const xmlChar *)"https://aspectc.org/schemas/ac-model",
               (const xmlChar *)NULL);
      model.xml_doc(doc);
      model.set_xml_node(doc->children);
    }
    model.to_xml(context);
    model.set_xml_dirty(false);
    model.set_property("ids",
                       context.next_id()); // also save the number of used IDs
#if 0
    if (fd >= 0) {
      xmlSaveCtxtPtr ctx = xmlSaveToFd(fd, 0, XML_SAVE_FORMAT);
      if (xmlSaveDoc(ctx, doc) == -1)
        return false;
      return (xmlSaveClose(ctx) != -1);
    } else {
      return (xmlSaveFormatFile(filename, doc, 1) != -1);
    }
#endif
    // make project model file empty
    int fd = file.get_fd();
    lseek (fd, 0, SEEK_SET);
    if (ftruncate (fd, 0) != 0)
      return false;
    // and save the XML
    xmlSaveCtxtPtr ctx = xmlSaveToFd(fd, 0, XML_SAVE_FORMAT);
    if (xmlSaveDoc(ctx, doc) == -1)
      return false;
    return (xmlSaveClose(ctx) != -1);
  }
};

#endif // __XmlModelWriter_h__