static string Compress(string fname, bool forceOverwrite)
{
var outFname = fname + ".bz2";
if (File.Exists(outFname))
{
if (forceOverwrite)
File.Delete(outFname);
else
return null;
}
using (Stream fs = File.OpenRead(fname),
output = File.Create(outFname),
compressor = new Ionic.BZip2.ParallelBZip2OutputStream(output))
Pump(fs, compressor);
return outFname;
}
static string Compress(string fname, bool forceOverwrite)
{
var outFname = fname + ".bz2";
if (File.Exists(outFname))
{
if (forceOverwrite)
{
File.Delete(outFname);
}
else
{
return(null);
}
}
using (Stream fs = File.OpenRead(fname),
output = File.Create(outFname),
compressor = new Ionic.BZip2.ParallelBZip2OutputStream(output))
Pump(fs, compressor);
return(outFname);
}
[Timeout(15 * 60*1000)] // 60*1000 = 1min
public void BZ_Basic()
{
TestContext.WriteLine("Creating fodder file.");
// select a random text string
var line = TestStrings.ElementAt(this.rnd.Next(0, TestStrings.Count)).Value;
int n = 4000 + this.rnd.Next(1000); // number of iters
var fname = "Pippo.txt";
// emit many many lines into a text file:
using (var sw = new StreamWriter(File.Create(fname)))
{
for (int k=0; k < n; k++)
{
sw.WriteLine(line);
}
}
int crcOriginal = GetCrc(fname);
int blockSize = 0;
Func<Stream,Stream>[] getBzStream = {
new Func<Stream,Stream>( s0 => {
var decorator = new Ionic.BZip2.BZip2OutputStream(s0, blockSize);
return decorator;
}),
new Func<Stream,Stream>( s1 => {
var decorator = new Ionic.BZip2.ParallelBZip2OutputStream(s1, blockSize);
return decorator;
})
};
int[] blockSizes = { 1,2,3,4,5,6,7,8,9 };
for (int k=0; k < getBzStream.Length; k++)
{
for (int m=0; m < blockSizes.Length; m++)
{
blockSize = blockSizes[m];
var getStream = getBzStream[k];
var root = Path.GetFileNameWithoutExtension(fname);
var ext = Path.GetExtension(fname);
// compress into bz2
var bzFname = String.Format("{0}.{1}.blocksize{2}{3}.bz2",
root,
(k==0)?"SingleThread":"MultiThread",
blockSize, ext);
TestContext.WriteLine("Compress cycle ({0},{1})", k,m);
TestContext.WriteLine("file {0}", bzFname);
using (var fs = File.OpenRead(fname))
{
using (var output = File.Create(bzFname))
{
using (var compressor = getStream(output))
{
CopyStream(fs, compressor);
}
}
}
TestContext.WriteLine("Decompress");
var decompressedFname = Path.GetFileNameWithoutExtension(bzFname);
using (Stream fs = File.OpenRead(bzFname),
output = File.Create(decompressedFname),
decompressor = new Ionic.BZip2.BZip2InputStream(fs))
{
CopyStream(decompressor, output);
}
TestContext.WriteLine("Check CRC");
int crcDecompressed = GetCrc(decompressedFname);
Assert.AreEqual<int>(crcOriginal, crcDecompressed,
"CRC mismatch {0:X8} != {1:X8}",
crcOriginal, crcDecompressed);
TestContext.WriteLine("");
// just for the sake of disk space economy:
File.Delete(decompressedFname);
File.Delete(bzFname);
}
}
}
[Timeout(15 * 60 * 1000)] // 60*1000 = 1min
public void BZ_Basic()
{
TestContext.WriteLine("Creating fodder file.");
// select a random text string
var line = TestStrings.ElementAt(this.rnd.Next(0, TestStrings.Count)).Value;
int n = 4000 + this.rnd.Next(1000); // number of iters
var fname = "Pippo.txt";
// emit many many lines into a text file:
using (var sw = new StreamWriter(File.Create(fname)))
{
for (int k = 0; k < n; k++)
{
sw.WriteLine(line);
}
}
int crcOriginal = GetCrc(fname);
int blockSize = 0;
Func <Stream, Stream>[] getBzStream =
{
new Func <Stream, Stream>(s0 => {
var decorator = new Ionic.BZip2.BZip2OutputStream(s0,blockSize);
return(decorator);
}),
new Func <Stream, Stream>(s1 => {
var decorator = new Ionic.BZip2.ParallelBZip2OutputStream(s1,blockSize);
return(decorator);
})
};
int[] blockSizes = { 1, 2, 3, 4, 5, 6, 7, 8, 9 };
for (int k = 0; k < getBzStream.Length; k++)
{
for (int m = 0; m < blockSizes.Length; m++)
{
blockSize = blockSizes[m];
var getStream = getBzStream[k];
var root = Path.GetFileNameWithoutExtension(fname);
var ext = Path.GetExtension(fname);
// compress into bz2
var bzFname = String.Format("{0}.{1}.blocksize{2}{3}.bz2",
root,
(k == 0)?"SingleThread":"MultiThread",
blockSize, ext);
TestContext.WriteLine("Compress cycle ({0},{1})", k, m);
TestContext.WriteLine("file {0}", bzFname);
using (var fs = File.OpenRead(fname))
{
using (var output = File.Create(bzFname))
{
using (var compressor = getStream(output))
{
CopyStream(fs, compressor);
}
}
}
TestContext.WriteLine("Decompress");
var decompressedFname = Path.GetFileNameWithoutExtension(bzFname);
using (Stream fs = File.OpenRead(bzFname),
output = File.Create(decompressedFname),
decompressor = new Ionic.BZip2.BZip2InputStream(fs))
{
CopyStream(decompressor, output);
}
TestContext.WriteLine("Check CRC");
int crcDecompressed = GetCrc(decompressedFname);
Assert.AreEqual <int>(crcOriginal, crcDecompressed,
"CRC mismatch {0:X8} != {1:X8}",
crcOriginal, crcDecompressed);
TestContext.WriteLine("");
// just for the sake of disk space economy:
File.Delete(decompressedFname);
File.Delete(bzFname);
}
}
}