public override bool GetDiff(string diffInput1, string diffInput2, string[] options, TextWriter diffOutput, string linePrefix, IDiffEngineFactory diffFactory)
{
bool difference = false;
InstallPackage db1, db2;
if (IsMspPatch(diffInput1))
{
string patchTargetDbFile = GetPatchTargetOption(options);
if (patchTargetDbFile == null)
{
patchTargetDbFile = diffInput2;
}
string tempPatchedDbFile = Path.GetTempFileName();
File.Copy(patchTargetDbFile, tempPatchedDbFile, true);
File.SetAttributes(tempPatchedDbFile, File.GetAttributes(tempPatchedDbFile) & ~System.IO.FileAttributes.ReadOnly);
db1 = new InstallPackage(tempPatchedDbFile, DatabaseOpenMode.Direct);
db1.ApplyPatch(new PatchPackage(diffInput1), null);
db1.Commit();
}
else
{
db1 = new InstallPackage(diffInput1, DatabaseOpenMode.ReadOnly);
}
if (IsMspPatch(diffInput2))
{
string patchTargetDbFile = GetPatchTargetOption(options);
if (patchTargetDbFile == null)
{
patchTargetDbFile = diffInput1;
}
string tempPatchedDbFile = Path.GetTempFileName();
File.Copy(patchTargetDbFile, tempPatchedDbFile, true);
File.SetAttributes(tempPatchedDbFile, File.GetAttributes(tempPatchedDbFile) & ~System.IO.FileAttributes.ReadOnly);
db2 = new InstallPackage(tempPatchedDbFile, DatabaseOpenMode.Direct);
db2.ApplyPatch(new PatchPackage(diffInput2), null);
db2.Commit();
}
else
{
db2 = new InstallPackage(diffInput2, DatabaseOpenMode.ReadOnly);
}
if (GetSummaryInfoDiff(db1, db2, options, diffOutput, linePrefix, diffFactory))
{
difference = true;
}
if (GetDatabaseDiff(db1, db2, options, diffOutput, linePrefix, diffFactory))
{
difference = true;
}
if (GetStreamsDiff(db1, db2, options, diffOutput, linePrefix, diffFactory))
{
difference = true;
}
db1.Close();
db2.Close();
try
{
if (IsMspPatch(diffInput1))
{
File.Delete(db1.FilePath);
}
if (IsMspPatch(diffInput1))
{
File.Delete(db2.FilePath);
}
}
catch (IOException)
{
#if DEBUG
Console.WriteLine("Could not delete temporary files {0} and {1}", db1.FilePath, db2.FilePath);
#endif
}
if (IsMspPatch(diffInput1) && IsMspPatch(diffInput2))
{
Database dbp1 = new Database(diffInput1, DatabaseOpenMode.ReadOnly);
Database dbp2 = new Database(diffInput2, DatabaseOpenMode.ReadOnly);
if (GetStreamsDiff(dbp1, dbp2, options, diffOutput, linePrefix, diffFactory))
{
difference = true;
}
dbp1.Close();
dbp2.Close();
}
return(difference);
}