/* -*- Mode: C++; c-default-style: "k&r"; indent-tabs-mode: nil; tab-width: 2; c-basic-offset: 2 -*- */

/* libstaroffice
* Version: MPL 2.0 / LGPLv2+
*
* The contents of this file are subject to the Mozilla Public License Version
* 2.0 (the "License"); you may not use this file except in compliance with
* the License or as specified alternatively below. You may obtain a copy of
* the License at http://www.mozilla.org/MPL/
*
* Software distributed under the License is distributed on an "AS IS" basis,
* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
* for the specific language governing rights and limitations under the
* License.
*
* Major Contributor(s):
* Copyright (C) 2002 William Lachance (wrlach@gmail.com)
* Copyright (C) 2002,2004 Marc Maurer (uwog@uwog.net)
* Copyright (C) 2004-2006 Fridrich Strba (fridrich.strba@bluewin.ch)
* Copyright (C) 2006, 2007 Andrew Ziem
* Copyright (C) 2011, 2012 Alonso Laurent (alonso@loria.fr)
*
*
* All Rights Reserved.
*
* For minor contributions see the git repository.
*
* Alternatively, the contents of this file may be used under the terms of
* the GNU Lesser General Public License Version 2 or later (the "LGPLv2+"),
* in which case the provisions of the LGPLv2+ are applicable
* instead of those above.
*/

/*
 * StarZone zone of StarOffice document
 *
 */
#ifndef STAR_ZONE
#  define STAR_ZONE

#include <vector>
#include <stack>

#include "libstaroffice_internal.hxx"

#include "STOFFDebug.hxx"
#include "StarEncoding.hxx"

class StarEncryption;

/** \brief a zone in a StarOffice file
 *
 *
 *
 */
class StarZone
{
public:
  //! constructor
  StarZone(STOFFInputStreamPtr const &input, std::string const &ascName, std::string const &zoneName, char const *password);
  //! destructor
  virtual ~StarZone();
  //! read the zone header present in a SW file
  bool readSWHeader();

  //! check encryption
  bool checkEncryption(uint32_t date, uint32_t time, std::vector<uint8_t> const &passwd);
  //! open a zone header present in a SDR file
  bool openSDRHeader(std::string &magic);
  //! close a zone header
  bool closeSDRHeader(std::string const &debugName);

  //! open a zone header present in a SCH file
  bool openSCHHeader();
  //! close a zone header
  bool closeSCHHeader(std::string const &debugName);

  //! open a version compat header (version+size)
  bool openVersionCompatHeader();
  //! close a zone header
  bool closeVersionCompatHeader(std::string const &debugName);

  //! returns the StarOffice version: 3-5
  int getVersion() const
  {
    return m_version;
  }
  //! returns the StarOffice document version
  int getDocumentVersion() const
  {
    return m_documentVersion;
  }
  //! returns the StarOffice header version (if set)
  int getHeaderVersion() const
  {
    return m_headerVersionStack.empty() ? 0 : m_headerVersionStack.top();
  }
  //! checks if the document is compatible with vers
  int isCompatibleWith(int vers) const
  {
    return m_documentVersion>=vers;
  }
  //! checks if the document is compatible with vers1 and not vers2
  int isCompatibleWith(int vers1, int vers2) const
  {
    return m_documentVersion>=vers1 && m_documentVersion<vers2;
  }
  //! checks if the document is compatible with vers1 and not vers2 or vers3
  int isCompatibleWith(int vers1, int vers2, int vers3) const
  {
    return (m_documentVersion>=vers1 && m_documentVersion<vers2) ||
           m_documentVersion>=vers3;
  }
  //! checks if the document is compatible with vers1 and not vers2 or vers3 and not vers4
  int isCompatibleWith(int vers1, int vers2, int vers3, int vers4) const
  {
    return (m_documentVersion>=vers1 && m_documentVersion<vers2) ||
           (m_documentVersion>=vers3 && m_documentVersion<vers4);
  }
  //! returns the zone encoding
  StarEncoding::Encoding getEncoding() const
  {
    return m_encoding;
  }
  //! sets the zone encoding
  void setEncoding(StarEncoding::Encoding encod)
  {
    m_encoding=encod;
  }
  //! returns the zone GUI type
  int getGuiType() const
  {
    return m_guiType;
  }
  //! sets the zone GUI type
  void setGuiType(int type)
  {
    m_guiType=type;
  }
  //
  // basic
  //

  //! try to open a classic record: size (32 bytes) +  size-4 bytes
  bool openRecord();
  //! try to close a record
  bool closeRecord(std::string const &debugName)
  {
    return closeRecord(' ', debugName);
  }
  //! open a dummy record
  bool openDummyRecord();
  //! close a dummy record
  bool closeDummyRecord()
  {
    return closeRecord('@', "Entries(BadDummy)");
  }
  //
  // sc record
  //

  //! try to open a SC record: size (32 bytes) + size bytes
  bool openSCRecord();
  //! try to close a record
  bool closeSCRecord(std::string const &debugName)
  {
    return closeRecord('_', debugName);
  }

  //
  // sw record
  //

  //! try to open a SW record: type + size (24 bytes)
  bool openSWRecord(unsigned char &type);
  //! try to close a record
  bool closeSWRecord(unsigned char type, std::string const &debugName)
  {
    return closeRecord(type, debugName);
  }

  //
  // sfx record
  //

  //! try to open a Sfx record: type + size (24 bytes)
  bool openSfxRecord(unsigned char &type);
  //! try to close a record
  bool closeSfxRecord(unsigned char type, std::string const &debugName)
  {
    return closeRecord(type, debugName);
  }

  //! returns the record level
  int getRecordLevel() const
  {
    return int(m_positionStack.size());
  }
  //! returns the actual record last position
  long getRecordLastPosition() const
  {
    if (m_positionStack.empty()) {
      STOFF_DEBUG_MSG(("StarZone::getRecordLastPosition: can not find last position\n"));
      return 0;
    }
    return m_positionStack.top();
  }

  //! try to open a cflag zone
  unsigned char openFlagZone();
  //! close the cflag zone
  void closeFlagZone();
  //! returns the flag last position
  long getFlagLastPosition() const
  {
    return m_flagEndZone;
  }

  //! try to read an unicode string
  bool readString(std::vector<uint32_t> &string, int encoding=-1) const
  {
    std::vector<size_t> srcPositions;
    return readString(string, srcPositions, encoding);
  }
  //! try to read an unicode string
  bool readString(std::vector<uint32_t> &string, std::vector<size_t> &srcPositions, int encoding=-1, bool checkEncryption=false) const;
  //! try to read a pool of strings
  bool readStringsPool();
  //! return the number of pool name
  int getNumPoolNames() const
  {
    return int(m_poolList.size());
  }
  //! try to return a pool name
  bool getPoolName(int poolId, librevenge::RVNGString &res) const
  {
    res="";
    if (poolId>=0 && poolId<int(m_poolList.size())) {
      res=m_poolList[size_t(poolId)];
      return true;
    }
    if (poolId==0xFFF0) return true;
    STOFF_DEBUG_MSG(("StarZone::getPoolName: can not find pool name for %d\n", poolId));
    return false;
  }
  //! return the zone input
  STOFFInputStreamPtr input()
  {
    return m_input;
  }
  //! reset the current input
  void setInput(STOFFInputStreamPtr input);
  //! returns the ascii file
  libstoff::DebugFile &ascii()
  {
    return m_ascii;
  }
  //! return the zone name
  std::string const &name() const
  {
    return m_zoneName;
  }
protected:
  //
  // low level
  //

  //! try to read the record sizes
  bool readRecordSizes(long pos);
  //! try to close a record
  bool closeRecord(unsigned char type, std::string const &debugName);

  //
  // data
  //

  //! the input stream
  STOFFInputStreamPtr m_input;
  //! the ascii zone
  libstoff::DebugFile m_ascii;
  //! the zone version
  int m_version;
  //! the document version
  int m_documentVersion;
  //! the header version (for SDR zone)
  std::stack<int> m_headerVersionStack;
  //! the zone encoding
  StarEncoding::Encoding m_encoding;
  //! the zone GUI type
  int m_guiType;
  //! the encryption
  std::shared_ptr<StarEncryption> m_encryption;
  //! the file ascii name
  std::string m_asciiName;
  //! the zone name
  std::string m_zoneName;

  //! the type stack
  std::stack<unsigned char> m_typeStack;
  //! the position stack
  std::stack<long> m_positionStack;
  //! other position to end position zone
  std::map<long, long> m_beginToEndMap;
  //! end of a cflags zone
  long m_flagEndZone;

  //! the pool name list
  std::vector<librevenge::RVNGString> m_poolList;
};
#endif
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