public static void CalculateDeleteFileOperations
(
DifferenceCalculationResults results,
DirectoryInfo sourceDirectory,
DirectoryInfo destDirectory,
DirectoryInfo parentDirectory
)
{
#if DEBUG
IEnumerable <FileSystemInfo> fileSystemInfos = parentDirectory.GetFileSystemInfos();
#else
IEnumerable <FileSystemInfo> fileSystemInfos = parentDirectory.EnumerateFileSystemInfos();
#endif
foreach (FileSystemInfo fileSystemInfo in fileSystemInfos)
{
#if DEBUG
FileSystemInfo matchingFileSystemInfo = FileSystem.GetOtherFolderMatchingFileSystemInfo
(
fileSystemInfo,
destDirectory,
sourceDirectory
);
bool isFolder = fileSystemInfo.IsFolder();
bool?matchingFileIsFolder = matchingFileSystemInfo?.IsFolder();
if (matchingFileSystemInfo == null)
#else
string matchingFilePath = FileSystem.GetOtherFolderMatchingFileSystemPath
(
fileSystemInfo,
sourceDirectory,
destDirectory
);
if (!Utility.IO.FileSystem.DoesPathExist(destFilePath))
#endif
{
results.AddDeleteOperation(fileSystemInfo.FullName);
}
else
{
if (fileSystemInfo.IsFolder())
{
CalculateDeleteFileOperations
(
results,
sourceDirectory,
destDirectory,
(DirectoryInfo)fileSystemInfo
);
}
}
}
}
public static DifferenceCalculationResults CalculateFileOperations
(
DirectoryInfo sourceDirectory,
DirectoryInfo destDirectory
)
{
var results = new DifferenceCalculationResults();
CalculateCopyFileOperations(results, sourceDirectory, destDirectory);
CalculateDeleteFileOperations(results, sourceDirectory, destDirectory);
return(results);
}
public static void CalculateCopyFileOperations
(
DifferenceCalculationResults results,
DirectoryInfo sourceDirectory,
DirectoryInfo destDirectory
)
{
CalculateCopyFileOperations
(
results,
sourceDirectory,
destDirectory,
sourceDirectory
);
}
public static void CalculateCopyFileOperations
(
DifferenceCalculationResults results,
DirectoryInfo sourceDirectory,
DirectoryInfo destDirectory,
DirectoryInfo parentDirectory
)
{
#if DEBUG
IEnumerable <FileSystemInfo> fileSystemInfos = parentDirectory.GetFileSystemInfos();
#else
IEnumerable <FileSystemInfo> fileSystemInfos = parentDirectory.EnumerateFileSystemInfos();
#endif
foreach (FileSystemInfo fileSystemInfo in fileSystemInfos)
{
string matchingFilePath = FileSystem.GetOtherFolderMatchingFileSystemPath
(
fileSystemInfo,
sourceDirectory,
destDirectory
);
FileSystemInfo matchingFileSystemInfo = FileSystem.GetFileSystemInfo
(
matchingFilePath
);
#if DEBUG
bool isFolder = fileSystemInfo.IsFolder();
bool?matchingFileIsFolder = matchingFileSystemInfo?.IsFolder();
#endif
if (matchingFileSystemInfo == null)
{
// The matching file in the destination directory does not exists,
// we can safely copy this file (or folder) there.
results.AddCopyOperation
(
fileSystemInfo.FullName,
matchingFilePath,
OperationErrors.DestFileDoesNotExists
);
}
else
{
#if !DEBUG
bool isFolder = fileSystemInfo.IsFolder();
#endif
if (isFolder != matchingFileSystemInfo.IsFolder())
{
/*
* If the matching file's "kind" (is file or is folder) is different
* from the "kind" of this file, we have to delete it first in order to override it
* and then copy this file there once it can be done with no errors.
*/
results.AddCopyOperation
(
fileSystemInfo.FullName,
matchingFileSystemInfo.FullName,
OperationErrors.DestFileDifferentDirAttr
);
}
else
{
if (isFolder)
{
// If both are directories, then we need to keep calculating the differences.
CalculateCopyFileOperations
(
results,
sourceDirectory,
destDirectory,
(DirectoryInfo)fileSystemInfo
);
}
else
{
// If the file exists, then we need to compare them.
OperationError error = null;
var fileInfo = (FileInfo)fileSystemInfo;
var matchingFileInfo = (FileInfo)matchingFileSystemInfo;
if (fileInfo.LastWriteTime > matchingFileInfo.LastWriteTime)
{
error = OperationErrors.DestFileLaterLastWriteTime;
}
else if (fileInfo.LastWriteTime == matchingFileInfo.LastWriteTime)
{
if (fileInfo.Length != matchingFileInfo.Length)
{
error = OperationErrors.DestFileSameWriteTimeDifferentLength;
}
}
else // fileInfo.LastWriteTime < matchingFileInfo.LastWriteTime
{
error = OperationErrors.DestFileBeforeWriteTime;
}
if (error != null)
{
results.AddCopyOperation
(
fileSystemInfo.FullName,
matchingFileSystemInfo.FullName,
error
);
}
}
}
}
}
}
