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4 cycrow 1 
 
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#include "HiP.h"
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bool g_bCanceled;
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BOOL __stdcall CompressionCallback( DWORD cbDone, DWORD cbTotal )
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{
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	if ( g_bCanceled )
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		return false;
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	float percent = ((float)cbDone / (float)cbTotal) * 100;
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	return true;
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}
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//
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// Purpose:
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//   The root routine to decompress a single file
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//
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//bool CCompression::DecompressFile( char* szFile, char* szOutFile )
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bool DecompressFile( char* szFile, char* szOutFile )
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{
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	clsFILE     infile, outfile;
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	PHipPack    pEngine = NULL;
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	//
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	// map the input file into memory
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	//
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	if ( !infile.GetFileHandle( szFile, F_OPENEXISTING_R ) ||
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		 !infile.MapFile() )
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		return false;
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	//
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	// analyse the file
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	//
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	// 0 byte file ?
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	if ( infile.GetFSize() == 0 )
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		return FALSE; // ERR
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	// initialize engine
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	pEngine = new HipPack( infile.GetMapPtr(), infile.GetFSize() );
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	pEngine->SetCallback( CompressionCallback );
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	void*  pOut;
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	DWORD  cbOut;
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	bool done = (pEngine->PerformDecompression( &pOut, &cbOut )) ? true : false;
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	//
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	// write the output 2 disk
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	//
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	if ( !outfile.GetFileHandle( szOutFile, F_CREATENEW ) )
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	{
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		if ( pEngine )
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			delete pEngine;
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		return false;
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	}
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	outfile.Write( pOut, cbOut );
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	outfile.Destroy();
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	if ( pEngine )
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		delete pEngine;
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	return done;
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}
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