Subversion Repositories spk

#include "HiP.h"

bool g_bCanceled;

BOOL __stdcall CompressionCallback( DWORD cbDone, DWORD cbTotal )
{
        if ( g_bCanceled )
                return false;

        float percent = ((float)cbDone / (float)cbTotal) * 100;

        return true;
}

//
// Purpose:
//   The root routine to decompress a single file
//

//bool CCompression::DecompressFile( char* szFile, char* szOutFile )
bool DecompressFile( char* szFile, char* szOutFile )
{
        clsFILE     infile, outfile;
        PHipPack    pEngine = NULL;

        //
        // map the input file into memory
        //
        if ( !infile.GetFileHandle( szFile, F_OPENEXISTING_R ) ||
                 !infile.MapFile() )
                return false;

        //
        // analyse the file
        //

        // 0 byte file ?
        if ( infile.GetFSize() == 0 )
                return FALSE; // ERR

        // initialize engine
        pEngine = new HipPack( infile.GetMapPtr(), infile.GetFSize() );
        pEngine->SetCallback( CompressionCallback );

        void*  pOut;
        DWORD  cbOut;
        bool done = (pEngine->PerformDecompression( &pOut, &cbOut )) ? true : false;

        //
        // write the output 2 disk
        //
        if ( !outfile.GetFileHandle( szOutFile, F_CREATENEW ) )
        {
                if ( pEngine )
                        delete pEngine;
                return false;
        }
        outfile.Write( pOut, cbOut );
        outfile.Destroy();

        if ( pEngine )
                delete pEngine;

        return done;
}