protected override void DoTaskForFile(string pPath, IVgmtWorkerStruct pGzipExtractorStruct, DoWorkEventArgs e)
{
GzipExtractorStruct gzipExtractorStruct = (GzipExtractorStruct)pGzipExtractorStruct;
this.progressStruct.Clear();
if (gzipExtractorStruct.DoDecompress)
{
progressStruct.GenericMessage = String.Format("Decompressing <{0}>{1}", pPath, Environment.NewLine);
}
else
{
progressStruct.GenericMessage = String.Format("Compressing <{0}>{1}", pPath, Environment.NewLine);
}
ReportProgress(this.Progress, progressStruct);
try
{
string outputFileName;
if (gzipExtractorStruct.DoDecompress)
{
outputFileName = Path.ChangeExtension(pPath, CompressionUtil.GzipDecompressOutputExtension);
}
else
{
outputFileName = Path.ChangeExtension(pPath, CompressionUtil.GzipCompressOutputExtension);
}
using (FileStream fs = File.OpenRead(pPath))
{
if (gzipExtractorStruct.StartingOffset > fs.Length)
{
throw new ArgumentOutOfRangeException("Starting Offset", "Offset cannot be greater than the file size.");
}
if (gzipExtractorStruct.DoDecompress)
{
CompressionUtil.DecompressGzipStreamToFile(fs, outputFileName, gzipExtractorStruct.StartingOffset);
}
else
{
CompressionUtil.CompressStreamToGzipFile(fs, outputFileName, gzipExtractorStruct.StartingOffset);
}
}
this.progressStruct.Clear();
if (gzipExtractorStruct.DoDecompress)
{
progressStruct.GenericMessage = String.Format(" {0} decompressed.{1}", Path.GetFileName(outputFileName), Environment.NewLine);
}
else
{
progressStruct.GenericMessage = String.Format(" {0} compressed.{1}", Path.GetFileName(outputFileName), Environment.NewLine);
}
ReportProgress(this.Progress, progressStruct);
}
catch (Exception ex)
{
throw ex;
}
}
static void Main(string[] args)
{
string inFilename;
string outFilename;
string startOffset;
string fullInputPath;
string fullOutputPath;
long longStartOffset;
if (args.Length < 2)
{
Console.WriteLine("Usage: gzipext.exe <infile> <outfile> <start offset>");
Console.WriteLine(" or: gzipext.exe <infile> <outfile>");
Console.WriteLine();
Console.WriteLine("The 2 parameter option will set <start offset> to 0.");
}
else
{
inFilename = args[0];
outFilename = args[1];
if (args.Length < 3)
{
startOffset = "0";
}
else
{
startOffset = args[2];
}
fullInputPath = Path.GetFullPath(inFilename);
fullOutputPath = Path.GetFullPath(outFilename);
if (File.Exists(fullInputPath))
{
using (FileStream fs = File.OpenRead(fullInputPath))
{
if (startOffset.StartsWith("0x"))
{
startOffset = startOffset.Substring(2);
longStartOffset = long.Parse(startOffset, System.Globalization.NumberStyles.HexNumber, null);
}
else
{
longStartOffset = long.Parse(startOffset, System.Globalization.NumberStyles.Integer, null);
}
if (longStartOffset > fs.Length)
{
Console.WriteLine(String.Format("Sorry that start offset is larger than the entire file: {0}", fs.Length.ToString()));
}
else
{
try
{
CompressionUtil.DecompressGzipStreamToFile(fs, fullOutputPath, longStartOffset);
}
catch (Exception)
{
Console.WriteLine(String.Format("Cannot decompress <{0}>.", fullInputPath));
}
}
}
}
else
{
Console.WriteLine("File Not Found: " + fullInputPath);
}
}
}