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/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
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/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
//////////////////////////////////////////////////////////////////////////////
// //
// plInitFileReader - Helper class that parses a standard-format .ini file //
// and allows you to specify derived classes to handle //
// interpreting specific portions. //
// //
//// Usage ///////////////////////////////////////////////////////////////////
// //
// First create a set of derived classes from plInitSectionReader //
// (or plInitSectionTokenReader, to be easier) that will parse the lines //
// for each section of your .ini file. Then create a C-style array of //
// pointers to instances of each reader, the first being the default //
// reader, and ending with a nil pointer (see below). Finally, create //
// a plInitFileReader with the array you created and it'll parse the //
// given file (or stream) and call your readers as needed. You can also //
// optionally pass in a UInt32 for userData that will be passed on to each //
// reader in turn. //
// //
//////////////////////////////////////////////////////////////////////////////
#ifndef _plInitFileReader_h
#define _plInitFileReader_h
#include "hsTypes.h"
#include "hsStream.h"
#include "hsTemplates.h"
//// Base Section Class //////////////////////////////////////////////////////
// Define a derived version of this for each section of your init file.
class plInitSectionReader
{
public:
// Override this to define what [string] your section starts with
virtual const char *GetSectionName( void ) const = 0;
// Override this to parse each line in your section. Return false to abort parsing
virtual hsBool ParseLine( const char *line, UInt32 userData ) = 0;
// Override this if you're defining an unhandled section reader
virtual void SetSectionName(const char* section) {}
};
//// Semi-Derived Class //////////////////////////////////////////////////////
// Half-way derived class for parsing lines by tokens rather than pure
// strings.
class hsStringTokenizer;
class plInitSectionTokenReader : public plInitSectionReader
{
protected:
const char *fSeparators;
// Override this to parse each token in your section. Return false to abort parsing
virtual hsBool IParseToken( const char *token, hsStringTokenizer *tokenizer, UInt32 userData ) = 0;
public:
plInitSectionTokenReader( const char *separators = ",=\t" );
// Overridden for you. Override IParseToken()
virtual hsBool ParseLine( const char *line, UInt32 userData );
};
//// Main Reader Class ///////////////////////////////////////////////////////
// Create one of these and add an array of derived versions of the above
// reader to parse your init file.
class plInitFileReader
{
protected:
hsStream *fStream;
hsStream *fOurStream;
char *fCurrLine;
UInt32 fLineSize;
bool fRequireEncrypted;
plInitSectionReader *fCurrSection;
hsTArray<plInitSectionReader *> fSections;
plInitSectionReader* fUnhandledSection;
void IInitReaders( plInitSectionReader **readerArray );
public:
// The array passed in should be an array of pointers to plInitSectionReader,
// with the last pointer being nil (denoting the end of the array). The first
// element of the array will be the "default" section--i.e. if there is no section
// header at the top of the file, that reader will be used.
plInitFileReader( plInitSectionReader **readerArray, UInt16 lineSize = 256 );
plInitFileReader( const char *fileName, plInitSectionReader **readerArray, UInt16 lineSize = 256 );
plInitFileReader( hsStream *stream, plInitSectionReader **readerArray, UInt16 lineSize = 256 );
virtual ~plInitFileReader();
void SetRequireEncrypted(bool require) { fRequireEncrypted = require; }
bool GetRequireEncrypted() const { return fRequireEncrypted; }
void SetUnhandledSectionReader(plInitSectionReader* reader) { fUnhandledSection = reader; }
hsBool Open( const char *fileName );
hsBool Open( hsStream *stream );
hsBool Parse( UInt32 userData = 0 );
void Close( void );
hsBool IsOpen( void ) const { return fStream != nil; }
};
#endif //_plInitFileReader_h