public static Task CopyDirectoryAsync(this IsolatedStorageFile Iso, string SourceDirectory, string TargetDirectory, IProgress<double> FractionProgress, bool OverWrite = false)
{
Contract.Requires(Iso != null);
Contract.Requires(FractionProgress != null);
Contract.Requires(Iso.DirectoryExists(SourceDirectory), "Source Directory does not exist");
return Task.Factory.StartNew(() =>
{
FractionProgress.Report(0.0);
IList<string> relativeFilePaths;
IList<string> relativeDirPaths;
CollectSubdirectoriesAndFilesBreadthFirst(Iso, SourceDirectory, out relativeDirPaths, out relativeFilePaths);
var totalElementCount =
relativeDirPaths.Count + //SubDirectories
1 + //TargetDir
relativeFilePaths.Count; // Files
var reporter = new PercentageReporter<double>(FractionProgress, p => p / 100.0, totalElementCount);
var absoluteDirs = from relativeDir in relativeDirPaths
select Path.Combine(TargetDirectory, relativeDir);
foreach (var dir in Enumerable.Repeat(TargetDirectory, 1).Concat(absoluteDirs))
{
if (!Iso.DirectoryExists(dir))
{
Iso.CreateDirectory(dir);
}
reporter.Completed++;
}
foreach (var relativeFile in relativeFilePaths)
{
var sourceFile = Path.Combine(SourceDirectory, relativeFile);
var targetFile = Path.Combine(TargetDirectory, relativeFile);
try
{
Iso.CopyFile(sourceFile, targetFile, OverWrite);
}
catch (IsolatedStorageException)
{
// Ignore
}
reporter.Completed++;
}
});
}
private async Task SaveMultimedia(IsolatedStorageFile isoStore, string snapshotDir, IProgress<Tuple<BackupStage, int>> Progress) {
Progress.Report(Tuple.Create(BackupStage.ExternalData, 0));
var snapshotMultimediaDir = Path.Combine(snapshotDir, MultimediaStorageService.MEDIA_FOLDER);
var snapshotDBPath = Path.Combine(snapshotDir, DiversityDataContext.DB_FILENAME);
using (var db = new DiversityDataContext(snapshotDBPath)) {
var totalCount = db.MultimediaObjects.Count();
if (totalCount > 0) {
var reporter = new PercentageReporter<Tuple<BackupStage, int>>(
Progress,
p => Tuple.Create(BackupStage.ExternalData, p),
totalCount);
foreach (var mm in db.MultimediaObjects) {
var descriptor = StorageDescriptor.FromURI(mm.Uri);
if (descriptor.Type == StorageType.CameraRoll) {
using (var content = ImageStore.GetMultimedia(mm.Uri)) {
var mmFilePath = Path.Combine(snapshotMultimediaDir, descriptor.FileName);
using (var targetFile = isoStore.CreateFile(mmFilePath)) {
await content.CopyToAsync(targetFile);
descriptor.Type = StorageType.IsolatedStorage;
mm.Uri = descriptor.ToString();
}
}
}
reporter.Completed++;
}
db.SubmitChanges();
}
}
}