private static void CreateDiffFiles(String ATmpDirectory,
String ARootPatchDirectory,
String AOldDirectory,
String ANewDirectory,
String ARecursiveSubDir)
{
string OldDirectory = AOldDirectory + '/' + ARecursiveSubDir;
string NewDirectory = ANewDirectory + '/' + ARecursiveSubDir;
string PatchDirectory = ARootPatchDirectory + '/' + ARecursiveSubDir;
if (!Directory.Exists(PatchDirectory))
{
Directory.CreateDirectory(PatchDirectory);
}
if (!Directory.Exists(OldDirectory))
{
Directory.CreateDirectory(OldDirectory);
}
string[] directories = Directory.GetDirectories(NewDirectory);
foreach (string dir in directories)
{
CreateDiffFiles(ATmpDirectory,
ARootPatchDirectory,
AOldDirectory, ANewDirectory, dir.Substring(ANewDirectory.Length + 1));
}
// compare the files file by file
TLogging.Log("enter directory " + OldDirectory, TLoggingType.ToConsole);
string[] files = System.IO.Directory.GetFiles(OldDirectory);
foreach (string filenameLoop in files)
{
bool OldPatchFileReused = false;
string filename = Path.GetFileName(filenameLoop);
if (System.IO.File.Exists(NewDirectory + '/' + filename))
{
TPatchTools patch = new TPatchTools();
// compare if files are actually different
if (!patch.IsSame(filenameLoop, NewDirectory + '/' + Path.GetFileName(filename)))
{
// create binary diff
if (!Directory.Exists(PatchDirectory))
{
Directory.CreateDirectory(PatchDirectory);
}
string OldPatchFile = ARootPatchDirectory + "bak" + PatchDirectory.Substring(ARootPatchDirectory.Length) + '/' +
Path.GetFileName(filename) + ".patch";
if (System.IO.File.Exists(OldPatchFile))
{
// could reuse, if checksum of the result is the same
TPatchFileInfo OldPatchFileInfo;
patch.ReadHeader(OldPatchFile, out OldPatchFileInfo);
if (patch.CheckMd5Sum(NewDirectory + '/' + Path.GetFileName(filename),
OldPatchFileInfo.NewMd5sum) && patch.CheckMd5Sum(filenameLoop, OldPatchFileInfo.OldMd5sum))
{
// found a match, so no need for recreating the patch file; just copy it
TLogging.Log("reusing diff " + OldPatchFile, TLoggingType.ToConsole);
System.IO.File.Copy(OldPatchFile, PatchDirectory + '/' + Path.GetFileName(filename) + ".patch");
OldPatchFileReused = true;
}
}
if (!OldPatchFileReused)
{
TLogging.Log("create diff " + PatchDirectory + '/' + Path.GetFileName(filename), TLoggingType.ToConsole);
patch.CreateDiff(filenameLoop, NewDirectory + '/' + Path.GetFileName(filename), PatchDirectory + '/' +
Path.GetFileName(filename) + ".patch");
}
// if this is a file required for the patch program, include the new version
if ((Path.GetFileName(filename) == "Ict.Common.dll") || (Path.GetFileName(filename) == "Ict.Common.IO.dll")
|| (Path.GetFileName(filename) == "ICSharpCode.SharpZipLib.dll")
|| (Path.GetFileName(filename).ToLower() == "Ict.Tools.PatchTool.exe".ToLower()))
{
// don't compress here:
// the whole patch directory is zipped anyways in the end;
// and it is easier to extract before running the patch
System.IO.File.Copy(NewDirectory + '/' + Path.GetFileName(filename), PatchDirectory + '/' + Path.GetFileName(
filename), true);
}
}
}
}
// add new files (zip them)
files = System.IO.Directory.GetFiles(NewDirectory);
foreach (string filename in files)
{
if (!System.IO.File.Exists(OldDirectory + '/' + Path.GetFileName(filename)))
{
TLogging.Log("zip a new file " + NewDirectory + '/' + Path.GetFileName(filename), TLoggingType.ToConsole);
if (!Directory.Exists(PatchDirectory))
{
Directory.CreateDirectory(PatchDirectory);
}
try
{
BZip2.Compress(System.IO.File.OpenRead(NewDirectory + '/' + Path.GetFileName(filename)),
System.IO.File.OpenWrite(PatchDirectory + '/' + Path.GetFileName(filename) + ".new"), true, 4096);
}
catch (Exception)
{
throw new Exception("Cannot write to file " + PatchDirectory + '/' + Path.GetFileName(filename) + ".new");
}
}
}
// tell to remove files
files = System.IO.Directory.GetFiles(OldDirectory);
foreach (string filename in files)
{
if (!System.IO.File.Exists(NewDirectory + '/' + Path.GetFileName(filename)))
{
TLogging.Log("file removed: " + OldDirectory + '/' + Path.GetFileName(filename), TLoggingType.ToConsole);
FileStream stream = System.IO.File.OpenWrite(PatchDirectory + '/' + Path.GetFileName(filename) + ".rem");
stream.Close();
}
}
// todo: something about changes to config files? xml file with instructions?
// todo: check if all files can be matched when installing the patch
}