/// <summary> Decompress the existing file to the specified target. </summary>
public static void Decompress(string source, string target)
{
using (ReplaceFile replace = new ReplaceFile(target))
using (FileStream sourceStream = File.Open(source, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (Stream targetStream = replace.Create())
IOStream.Decompress(sourceStream, targetStream);
if (sourceStream.Length != sourceStream.Position)
{
throw new System.IO.IOException(Resources.IOStreamCompressionFailed);
}
sourceStream.Dispose();
replace.Commit();
}
}
public void TestIsFullPath()
{
string tmpname = Guid.NewGuid().ToString();
Assert.IsFalse(File.Exists(tmpname));
using (ReplaceFile f = new ReplaceFile(tmpname))
{
Assert.IsTrue(Path.IsPathRooted(f.TargetFile));
Assert.AreEqual(Environment.CurrentDirectory, Path.GetDirectoryName(f.TargetFile));
}
Assert.IsFalse(File.Exists(tmpname));
using (TransactFile f = new TransactFile(tmpname))
{
Assert.IsTrue(Path.IsPathRooted(f.TargetFile));
Assert.AreEqual(Environment.CurrentDirectory, Path.GetDirectoryName(f.TargetFile));
}
Assert.IsFalse(File.Exists(tmpname));
}
public void TestReplaceFiles()
{
string testdata = Guid.NewGuid().ToString();
string tmpPath;
TempFile replace = new TempFile();
using (ReplaceFile temp = new ReplaceFile(replace.TempPath))
{
Assert.AreEqual(temp.TargetFile, replace.TempPath);
tmpPath = temp.TempPath;
Assert.IsTrue(temp.Exists);
temp.WriteAllText(testdata);
//missing commit:
//temp.Commit();
}
Assert.AreEqual(0, replace.Length);
Assert.IsFalse(File.Exists(tmpPath));
string backupfile = Path.ChangeExtension(replace.TempPath, ".bak");
File.Delete(Path.ChangeExtension(replace.TempPath, ".bak"));
Assert.IsFalse(File.Exists(backupfile));
replace.WriteAllText("backup");
//now for real
using (ReplaceFile temp = new ReplaceFile(replace.TempPath, ".bak"))
{
tmpPath = temp.TempPath;
Assert.IsTrue(temp.Exists);
temp.WriteAllText(testdata);
temp.Commit();
}
Assert.IsFalse(File.Exists(tmpPath));
Assert.AreEqual(testdata, replace.ReadAllText());
Assert.IsTrue(File.Exists(backupfile));
using (TempFile fbackup = TempFile.Attach(backupfile))
Assert.AreEqual("backup", fbackup.ReadAllText());
}
/// <summary> Decompress the existing file to the specified target. </summary>
public static void Decompress(string source, string target)
{
using (ReplaceFile replace = new ReplaceFile(target))
using (FileStream sourceStream = File.Open(source, FileMode.Open, FileAccess.Read, FileShare.ReadWrite))
{
using (Stream targetStream = replace.Create())
IOStream.Decompress(sourceStream, targetStream);
if (sourceStream.Length != sourceStream.Position)
throw new System.IO.IOException(Resources.IOStreamCompressionFailed);
sourceStream.Dispose();
replace.Commit();
}
}
public void TestReplaceRollback()
{
string testdata = Guid.NewGuid().ToString();
using (TempFile replace = new TempFile())
using (ReplaceFile temp = new ReplaceFile(replace.TempPath))
{
temp.WriteAllText(testdata);
Assert.IsTrue(temp.Exists);
temp.Rollback();
Assert.IsFalse(temp.Exists);
}
}
