/// <summary>
/// Constructs a new zip instance.
/// If the file exists and has a non-zero length we read it,
/// otherwise we create a new archive.
/// </summary>
/// <param name="filename">The name of the file to read or write</param>
/// <param name="options">The options passed on the commandline</param>
public FileArchiveZip(string filename, Dictionary <string, string> options)
{
if (string.IsNullOrEmpty(filename) && filename.Trim().Length == 0)
{
throw new ArgumentException("filename");
}
if (File.Exists(filename) && new FileInfo(filename).Length > 0)
{
m_isWriting = false;
m_filename = filename;
}
else
{
m_compressionInfo = new CompressionInfo();
m_compressionInfo.Type = DEFAULT_COMPRESSION_METHOD;
m_compressionInfo.DeflateCompressionLevel = DEFAULT_COMPRESSION_LEVEL;
string cpmethod;
CompressionType tmptype;
if (options.TryGetValue(COMPRESSION_METHOD_OPTION, out cpmethod) && Enum.TryParse <SharpCompress.Common.CompressionType>(cpmethod, true, out tmptype))
{
m_compressionInfo.Type = tmptype;
}
string cplvl;
int tmplvl;
if (options.TryGetValue(COMPRESSION_LEVEL_OPTION, out cplvl) && int.TryParse(cplvl, out tmplvl))
{
m_compressionInfo.DeflateCompressionLevel = (SharpCompress.Compressor.Deflate.CompressionLevel)Math.Max(Math.Min(9, tmplvl), 0);
}
else if (options.TryGetValue(COMPRESSION_LEVEL_OPTION_ALIAS, out cplvl) && int.TryParse(cplvl, out tmplvl))
{
m_compressionInfo.DeflateCompressionLevel = (SharpCompress.Compressor.Deflate.CompressionLevel)Math.Max(Math.Min(9, tmplvl), 0);
}
m_defaultCompressionLevel = m_compressionInfo.DeflateCompressionLevel;
m_isWriting = true;
m_stream = new System.IO.FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Read);
m_writer = WriterFactory.Open(m_stream, ArchiveType.Zip, m_compressionInfo);
//Size of endheader, taken from SharpCompress ZipWriter
m_flushBufferSize = 8 + 2 + 2 + 4 + 4 + 2 + 0;
}
}
/// <summary>
/// Constructs a new zip instance.
/// If the file exists and has a non-zero length we read it,
/// otherwise we create a new archive.
/// </summary>
/// <param name="filename">The name of the file to read or write</param>
/// <param name="options">The options passed on the commandline</param>
public FileArchiveZip(string filename, Dictionary<string, string> options)
{
if (string.IsNullOrEmpty(filename) && filename.Trim().Length == 0)
throw new ArgumentException("filename");
if (File.Exists(filename) && new FileInfo(filename).Length > 0)
{
m_isWriting = false;
m_filename = filename;
}
else
{
m_compressionInfo = new CompressionInfo();
m_compressionInfo.Type = DEFAULT_COMPRESSION_METHOD;
m_compressionInfo.DeflateCompressionLevel = DEFAULT_COMPRESSION_LEVEL;
string cpmethod;
CompressionType tmptype;
if (options.TryGetValue(COMPRESSION_METHOD_OPTION, out cpmethod) && Enum.TryParse<SharpCompress.Common.CompressionType>(cpmethod, true, out tmptype))
m_compressionInfo.Type = tmptype;
string cplvl;
int tmplvl;
if (options.TryGetValue(COMPRESSION_LEVEL_OPTION, out cplvl) && int.TryParse(cplvl, out tmplvl))
m_compressionInfo.DeflateCompressionLevel = (SharpCompress.Compressor.Deflate.CompressionLevel)Math.Max(Math.Min(9, tmplvl), 0);
else if (options.TryGetValue(COMPRESSION_LEVEL_OPTION_ALIAS, out cplvl) && int.TryParse(cplvl, out tmplvl))
m_compressionInfo.DeflateCompressionLevel = (SharpCompress.Compressor.Deflate.CompressionLevel)Math.Max(Math.Min(9, tmplvl), 0);
m_defaultCompressionLevel = m_compressionInfo.DeflateCompressionLevel;
m_isWriting = true;
m_stream = new System.IO.FileStream(filename, FileMode.Create, FileAccess.Write, FileShare.Read);
m_writer = WriterFactory.Open(m_stream, ArchiveType.Zip, m_compressionInfo);
//Size of endheader, taken from SharpCompress ZipWriter
m_flushBufferSize = 8 + 2 + 2 + 4 + 4 + 2 + 0;
}
}
