private void btnExpandData_Click(object sender, System.EventArgs e)
{
// open memory stream on saved data
MemoryStream ms = new MemoryStream(m_CompressedData);
// attach decompressor stream to memory stream
C1ZStreamReader sr = new C1ZStreamReader(ms);
// read uncompressed data
BinaryReader br = new BinaryReader(sr);
int count = br.ReadInt32();
for (int i = 0; i < count; i++)
{
int deg = br.ReadInt32();
double rad = br.ReadDouble();
double sin = br.ReadDouble();
double cos = br.ReadDouble();
}
// done, tell user about it
string msg = string.Format("Read table with {0} points from stream with {1} bytes.", count, m_CompressedData.Length);
label1.Text = msg;
}
/// <summary>
/// 解压缩对象
/// </summary>
/// <returns></returns>
public static object Decompression(object data)
{
object obj = null;
C1ZStreamReader zipStream = null;
MemoryStream memStream = null;
try
{
if (data != null)
{
memStream = new MemoryStream((byte[])data);
zipStream = new C1ZStreamReader(memStream);
obj = new BinaryFormatter().Deserialize(zipStream);
}
}
catch (Exception ex)
{
throw ex;
}
finally
{
if (zipStream != null)
{
zipStream.Close();
}
if (memStream != null)
{
memStream.Close();
}
}
return(obj);
}
public static string ExpandString(byte[] buffer)
{
// turn buffer into a memory stream
MemoryStream ms = new MemoryStream(buffer);
// attach decompressor stream to memory stream
C1ZStreamReader sr = new C1ZStreamReader(ms);
// read uncompressed data
StreamReader reader = new StreamReader(sr);
return(reader.ReadToEnd());
}
private static bool ExpandFile(string dstFile, string srcFile)
{
// prepare to expand file
bool retval = true;
FileStream srcStream = null;
FileStream dstStream = null;
try
{
// open the files
srcStream = new FileStream(srcFile, FileMode.Open, FileAccess.Read);
dstStream = new FileStream(dstFile, FileMode.Create, FileAccess.Write);
// open expander stream on compressed source
C1ZStreamReader sr = new C1ZStreamReader(srcStream);
// copy expander stream into destination file
StreamCopy(dstStream, sr);
}
catch // exception? tell caller we failed
{
retval = false;
}
finally // always close our streams
{
if (srcStream != null)
{
srcStream.Close();
}
if (dstStream != null)
{
dstStream.Close();
}
}
// done
return(retval);
}
void btnLoadCompressed_Click(object sender, System.EventArgs e)
{
// clear grid, show status
Cursor = Cursors.WaitCursor;
dataGrid1.DataSource = null;
statusBar1.Text = "Loading DataTable from compressed file...";
// deserialize from regular file
string fn = Application.StartupPath + FN_COMPRESSED;
FileStream fs = new FileStream(fn, FileMode.Open);
C1ZStreamReader decompressor = new C1ZStreamReader(fs);
BinaryFormatter bf = new BinaryFormatter();
long ticks = DateTime.Now.Ticks;
DataTable dt = (DataTable)bf.Deserialize(decompressor);
long ms = (DateTime.Now.Ticks - ticks) / TimeSpan.TicksPerMillisecond;
fs.Close();
// show result
Cursor = Cursors.Default;
dataGrid1.DataSource = dt;
statusBar1.Text = "Loaded data from compressed file in " + ms.ToString() + " ms.";
}
public static bool uncompress(Stream stream_0, string string_0)
{
bool flag = true;
FileStream baseStream = null;
try
{
baseStream = new FileStream(string_0, FileMode.Open, FileAccess.Read);
C1ZStreamReader reader = new C1ZStreamReader(baseStream);
uncompress_write(stream_0, reader);
}
catch
{
flag = false;
}
finally
{
if (baseStream != null)
{
baseStream.Close();
}
}
return(flag);
}
/// <summary>
/// Opens a serialize test collection from a stream.
/// </summary>
/// <param name="stream"> The stream to load the TestCollection.</param>
/// <returns> A TestCollection.</returns>
public TestCollection OpenTemplate(Stream stream)
{
// Decompressed zip
C1ZStreamReader openZip = new C1ZStreamReader(stream);
// Desearialize
BinaryFormatter bf = new BinaryFormatter();
TestCollection tests = (TestCollection)bf.Deserialize(openZip);
stream.Close();
return tests;
}
