private void ShowFile(PackageFile file)
{
object content = null;
var isBinary = false;
// find all plugins which can handle this file's extension
var contentViewers = FindContentViewer(file);
if (contentViewers != null)
{
isBinary = true;
try
{
// iterate over all plugins, looking for the first one that return non-null content
foreach (var viewer in contentViewers)
{
using (var stream = file.GetStream())
{
content = viewer.GetView(Path.GetExtension(file.Name), stream);
if (content != null)
{
// found a plugin that can read this file, stop
break;
}
}
}
}
catch (Exception ex)
{
// don't let plugin crash the app
content = Resources.PluginFailToReadContent + Environment.NewLine + ex.ToString();
}
if (content is string)
{
isBinary = false;
}
}
// if plugins fail to read this file, fall back to the default viewer
long size = -1;
if (content == null)
{
isBinary = FileHelper.IsBinaryFile(file.Name);
if (isBinary)
{
content = Resources.UnsupportedFormatMessage;
}
else
{
content = ReadFileContent(file, out size);
}
}
if (size == -1)
{
// This is inefficient but cn be cleaned up later
using (var str = file.GetStream())
using (var ms = new MemoryStream())
{
str.CopyTo(ms);
size = ms.Length;
}
}
var fileInfo = new FileContentInfo(
file,
file.Path,
content,
!isBinary,
size);
ViewModel.ShowFile(fileInfo);
}
private bool CanEditFileCommandExecute(PackagePart file)
{
return((file is PackageFile) &&
!IsInEditFileMode &&
!FileHelper.IsBinaryFile(file.Path));
}
private void ShowFile(PackageFile file)
{
object?content = null;
var isBinary = false;
// find all plugins which can handle this file's extension
var contentViewers = FindContentViewer(file);
if (contentViewers != null)
{
isBinary = true;
try
{
// iterate over all plugins, looking for the first one that return non-null content
foreach (var viewer in contentViewers)
{
// Get peer files
var peerFiles = file.Parent !.GetFiles()
.Select(pf => new PackageFile(pf, Path.GetFileName(pf.Path), file.Parent !))
.ToList();
content = viewer.GetView(file, peerFiles);
if (content != null)
{
// found a plugin that can read this file, stop
break;
}
}
}
catch (Exception ex) when(!(ex is FileNotFoundException))
{
DiagnosticsClient.TrackException(ex);
// don't let plugin crash the app
content = Resources.PluginFailToReadContent + Environment.NewLine + ex.ToString();
}
if (content is string)
{
isBinary = false;
}
}
// if plugins fail to read this file, fall back to the default viewer
var truncated = false;
if (content == null)
{
isBinary = FileHelper.IsBinaryFile(file.Name);
if (isBinary)
{
content = Resources.UnsupportedFormatMessage;
}
else
{
content = ReadFileContent(file, out truncated);
}
}
long size = -1;
IReadOnlyList <AuthenticodeSignature> sigs;
SignatureCheckResult isValidSig;
using (var str = file.GetStream())
using (var tempFile = new TemporaryFile(str, Path.GetExtension(file.Name)))
{
var extractor = new FileInspector(tempFile.FileName);
sigs = extractor.GetSignatures().ToList();
isValidSig = extractor.Validate();
size = tempFile.Length;
}
var fileInfo = new FileContentInfo(
file,
file.Path,
content,
!isBinary,
size,
truncated,
sigs,
isValidSig);
ViewModel.ShowFile(fileInfo);
}
public void AddDraggedAndDroppedFiles(PackageFolder folder, string[] fileNames)
{
if (folder == null)
{
bool?rememberedAnswer = null;
for (int i = 0; i < fileNames.Length; i++)
{
string file = fileNames[i];
if (File.Exists(file))
{
bool movingFile;
PackageFolder targetFolder;
string guessFolderName = FileHelper.GuessFolderNameFromFile(file);
if (rememberedAnswer == null)
{
// ask user if he wants to move file
Tuple <bool?, bool> answer = UIServices.ConfirmMoveFile(
Path.GetFileName(file),
guessFolderName, fileNames.Length - i - 1);
if (answer.Item1 == null)
{
// user presses Cancel
break;
}
movingFile = (bool)answer.Item1;
if (answer.Item2)
{
rememberedAnswer = answer.Item1;
}
}
else
{
movingFile = (bool)rememberedAnswer;
}
if (movingFile)
{
if (RootFolder.ContainsFolder(guessFolderName))
{
targetFolder = (PackageFolder)RootFolder[guessFolderName];
}
else
{
targetFolder = RootFolder.AddFolder(guessFolderName);
}
}
else
{
targetFolder = RootFolder;
}
targetFolder.AddFile(file, isTempFile: false);
}
else if (Directory.Exists(file))
{
RootFolder.AddPhysicalFolder(file);
}
}
}
else
{
foreach (string file in fileNames)
{
if (File.Exists(file))
{
folder.AddFile(file, isTempFile: false);
}
else if (Directory.Exists(file))
{
folder.AddPhysicalFolder(file);
}
}
}
}