/**************************************************************
 * 
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 * 
 *************************************************************/


#ifndef IPARSER_HXX
#define IPARSER_HXX

#include <tools/string.hxx>
#include <tools/link.hxx>
#include <tools/stream.hxx>
#include "tools/toolsdllapi.h"

// forwards
class Dir;
class GenericInformation;
class GenericInformationList;

//
// class InformationParser
//

/******************************************************************************
Purpose: reads generic information files into a simple structure in memory
******************************************************************************/

// information files used by this parser have following format:

/*

key [value]
{
	key [value]
	key [value]
	{
		key [value]
		...
		...
	}
}
key [value]
...
...

*/

#define DEF_STAND_LST  "\\\\dev4\\data1\\b_server\\config\\stand.lst"

// error codes:

#define IP_NO_ERROR			0x0000
#define IP_UNEXPECTED_EOF	0x0001

#define REPLACE_VARIABLES	sal_True

class TOOLS_DLLPUBLIC InformationParser
{
private:
	sal_Bool bRecover;
	ByteString sOldLine;

	ByteString sCurrentComment;

	sal_Bool bReplaceVariables; // meaning %UPD and %VERSION
	sal_uInt16 nLevel;
	ByteString sUPD;
	ByteString sVersion;

	Link aStatusLink;
	SvStream *pActStream;
    UniString sStreamName;

	sal_uInt16 nErrorCode;
	sal_uIntPtr nErrorLine;
	ByteString sErrorText;
	sal_uIntPtr nActLine;

	// methods
	TOOLS_DLLPRIVATE ByteString &ReadLine();
	TOOLS_DLLPRIVATE GenericInformation *ReadKey( GenericInformationList *pExistingList );
	inline void Recover();

protected:
  sal_Bool Save( SvStream &rOutStream,
	     const GenericInformationList *pSaveList, sal_uInt16 nLevel, sal_Bool bStripped );
	GenericInformationList *Execute( SvStream &rSourceStream,
								GenericInformationList *pExistingList );
	virtual void PrintStatus( ByteString &rStatus )
		{ if ( aStatusLink.IsSet()) aStatusLink.Call( &rStatus ); }

public:
	InformationParser( sal_Bool bReplace = sal_False );
	virtual ~InformationParser();

	// the following methods return NULL if any errors are detected

	// reads a information file and stores the data in a
	// GenericInformationList
	GenericInformationList *Execute( SvMemoryStream &rSourceStream,
								GenericInformationList *pExistingList = NULL );
	GenericInformationList *Execute( SvFileStream &rSourceStream,
								GenericInformationList *pExistingList = NULL );
	GenericInformationList *Execute( UniString &rSourceFile,
								GenericInformationList *pExistingList = NULL );
	// reads all information files in the dir and stores the data in a
	// GenericInformationList => first key is the filename
	GenericInformationList *Execute( Dir &rDir,
								GenericInformationList *pExistingList = NULL );

  // save the InfrormationList to rSourceFile
  // returns sal_False on error
  sal_Bool Save( SvFileStream &rSourceStream,
	     const GenericInformationList *pSaveList );
  sal_Bool Save( SvMemoryStream &rSourceStream,
	     const GenericInformationList *pSaveList );
  sal_Bool Save( const UniString &rSourceFile,
	     const GenericInformationList *pSaveList );

	sal_uInt16 GetErrorCode();
	ByteString &GetErrorText();

	void SetStatusHdl( const Link &rHdl ) { aStatusLink = rHdl; }
};

#endif