public override int ReadByte()
{
if (!CanRead)
{
throw new NotSupportedException("The stream does not support reading");
}
byte[] buffer = new byte[1];
ulong bytesRead;
Result result;
if (async)
{
Async.Read(handle, out buffer[0], 1, readCallback);
Wait();
result = asyncResult;
}
else
{
result = Sync.Read(handle, out buffer[0], 1UL, out bytesRead);
}
if (result == Result.ErrorEof)
{
return(-1);
}
Vfs.ThrowException(Uri, result);
return(buffer[0]);
}
private void AsyncWrite(Handle handle, Result result, byte[] buffer,
ulong bytesRequested, ulong bytesWritten)
{
if (result == Result.Ok)
{
bytesRemaining -= (int)bytesWritten;
if (bytesRemaining > 0)
{
Async.Write(handle, out buffer[offset + count - bytesRemaining],
(uint)bytesRemaining, new AsyncWriteCallback(AsyncWrite));
}
else if (cback != null)
{
asyncResult.SetComplete(null, count);
cback(asyncResult);
}
}
else if (result == Result.ErrorEof)
{
bytesRemaining -= (int)bytesWritten;
asyncResult.SetComplete(null, count - bytesRemaining);
if (cback != null)
{
cback(asyncResult);
}
}
else if (cback != null)
{
Exception e = new IOException(Vfs.ResultToString(result));
asyncResult.SetComplete(e, -1);
cback(asyncResult);
}
}
public static Handle Open(Uri uri, OpenMode mode)
{
IntPtr handle = IntPtr.Zero;
Result result = gnome_vfs_open_uri(out handle, uri.Handle, mode);
if (result != Result.Ok)
{
Vfs.ThrowException(uri, result);
return(null);
}
else
{
return(new Handle(handle));
}
}
public static Handle Create(Uri uri, OpenMode mode, bool exclusive, FilePermissions perm)
{
IntPtr handle = IntPtr.Zero;
Result result = gnome_vfs_create_uri(out handle, uri.Handle, mode, exclusive, (uint)perm);
if (result != Result.Ok)
{
Vfs.ThrowException(uri, result);
return(null);
}
else
{
return(new Handle(handle));
}
}
public override void SetLength(long length)
{
if (!CanSeek)
{
throw new NotSupportedException("The stream does not support seeking");
}
else if (!CanWrite)
{
throw new NotSupportedException("The stream does not support writing");
}
Result result = Sync.Truncate(handle, (ulong)length);
Vfs.ThrowException(Uri, result);
}
public override long Seek(long offset, SeekOrigin origin)
{
if (!CanSeek)
{
throw new NotSupportedException("The stream does not support seeking");
}
if (IsAsync && origin == SeekOrigin.Current)
{
throw new NotSupportedException("Cannot tell what the offset is in async mode");
}
SeekPosition seekPos = SeekPosition.Start;
long newOffset = -1;
switch (origin)
{
case SeekOrigin.Begin:
seekPos = SeekPosition.Start;
newOffset = offset;
break;
case SeekOrigin.Current:
seekPos = SeekPosition.Current;
break;
case SeekOrigin.End:
seekPos = SeekPosition.End;
newOffset = Length + offset;
break;
}
Result result;
if (async)
{
Async.Seek(handle, seekPos, offset, callback);
Wait();
result = asyncResult;
}
else
{
result = Sync.Seek(handle, seekPos, offset);
}
Vfs.ThrowException(Uri, result);
return(newOffset);
}
public override int Read(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
else if (offset < 0)
{
throw new ArgumentOutOfRangeException("offset", "Must be >= 0");
}
else if (count < 0)
{
throw new ArgumentOutOfRangeException("count", "Must be >= 0");
}
else if (count > buffer.Length - offset)
{
throw new ArgumentException("Buffer too small, count/offset wrong");
}
else if (!CanRead)
{
throw new NotSupportedException("The stream does not support reading");
}
ulong bytesRead;
Result result;
if (async)
{
Async.Read(handle, out buffer[offset], (uint)count, readCallback);
Wait();
result = asyncResult;
bytesRead = asyncBytesRead;
}
else
{
result = Sync.Read(handle, out buffer[offset], (ulong)count, out bytesRead);
}
if (result == Result.ErrorEof)
{
return(0);
}
Vfs.ThrowException(Uri, result);
return((int)bytesRead);
}
public static FileInfo[] GetEntries(string text_uri, FileInfoOptions options)
{
IntPtr raw_ret;
Result result = gnome_vfs_directory_list_load(out raw_ret, text_uri, options);
Vfs.ThrowException(text_uri, result);
GLib.List list = new GLib.List(raw_ret, typeof(IntPtr));
list.Managed = true;
FileInfo[] entries = new FileInfo [list.Count];
int i = 0;
foreach (IntPtr info in list)
{
entries[i++] = new FileInfo(info);
}
return(entries);
}
public override void Write(byte[] buffer, int offset, int count)
{
if (buffer == null)
{
throw new ArgumentNullException("buffer");
}
else if (offset < 0)
{
throw new ArgumentOutOfRangeException("offset", "Must be >= 0");
}
else if (count < 0)
{
throw new ArgumentOutOfRangeException("count", "Must be >= 0");
}
else if (count > buffer.Length - offset)
{
throw new ArgumentException("Buffer too small, count/offset wrong");
}
else if (!CanWrite)
{
throw new NotSupportedException("The stream does not support writing");
}
ulong bytesWritten;
Result result;
if (async)
{
Async.Write(handle, out buffer[offset], (uint)count, writeCallback);
Wait();
result = asyncResult;
bytesWritten = asyncBytesWritten;
}
else
{
result = Sync.Write(handle, out buffer[offset], (ulong)count, out bytesWritten);
}
Vfs.ThrowException(Uri, result);
}
private void AsyncRead(Handle handle, Result result, byte[] buf,
ulong bytesRequested, ulong bytesRead)
{
if (result == Result.Ok)
{
Array.Copy(buf, 0, buffer, offset + count - bytesRemaining, (int)bytesRead);
bytesRemaining -= (int)bytesRead;
if (bytesRemaining > 0)
{
buf = new byte[bytesRemaining];
Async.Read(handle, out buf[0], (uint)bytesRemaining,
new AsyncReadCallback(AsyncRead));
}
else if (cback != null)
{
asyncResult.SetComplete(null, count);
cback(asyncResult);
}
}
else if (result == Result.ErrorEof)
{
Array.Copy(buf, 0, buffer, offset + count - bytesRemaining, (int)bytesRead);
bytesRemaining -= (int)bytesRead;
asyncResult.SetComplete(null, count - bytesRemaining);
if (cback != null)
{
cback(asyncResult);
}
}
else if (cback != null)
{
Exception e = new IOException(Vfs.ResultToString(result));
asyncResult.SetComplete(e, -1);
cback(asyncResult);
}
}
public override void WriteByte(byte value)
{
if (!CanWrite)
{
throw new NotSupportedException("The stream does not support writing");
}
byte[] buffer = new byte[1];
buffer[0] = value;
ulong bytesWritten;
Result result;
if (async)
{
Async.Write(handle, out buffer[0], 1, writeCallback);
Wait();
result = asyncResult;
}
else
{
result = Sync.Write(handle, out buffer[0], 1UL, out bytesWritten);
}
Vfs.ThrowException(Uri, result);
}
public FileInfo(Uri uri, FileInfoOptions options) : this()
{
Result result = gnome_vfs_get_file_info_uri(uri.Handle, Handle, (int)options);
Vfs.ThrowException(uri, result);
}
public VfsException(Result result)
: base(Vfs.ResultToString(result))
{
this.result = result;
}
public override void Close()
{
Result result = Sync.Close(handle);
Vfs.ThrowException(Uri, result);
}
public VfsStream(string text_uri, FileMode mode, bool async)
{
if (text_uri == null)
{
throw new ArgumentNullException("uri");
}
if (text_uri == "")
{
throw new ArgumentNullException("Uri is empty");
}
if (mode < FileMode.CreateNew || mode > FileMode.Append)
{
throw new ArgumentOutOfRangeException("mode");
}
if (text_uri.IndexOfAny(Path.InvalidPathChars) != -1)
{
throw new ArgumentException("Uri has invalid chars");
}
uri = new Gnome.Vfs.Uri(text_uri);
if (mode == FileMode.Open && !uri.Exists)
{
throw new FileNotFoundException("Could not find uri \"" + text_uri + "\".");
}
if (mode == FileMode.CreateNew)
{
string dname = uri.ExtractDirname();
if (dname != "" && !new Uri(dname).Exists)
{
throw new DirectoryNotFoundException("Could not find a part of " +
"the path \"" + dname + "\".");
}
}
if (async)
{
callback = new AsyncCallback(OnAsyncCallback);
readCallback = new AsyncReadCallback(OnAsyncReadCallback);
writeCallback = new AsyncWriteCallback(OnAsyncWriteCallback);
}
OpenMode om = OpenMode.None;
switch (mode)
{
case FileMode.CreateNew:
case FileMode.Create:
case FileMode.Truncate:
case FileMode.Append:
om = OpenMode.Write;
access = FileAccess.Write;
break;
case FileMode.OpenOrCreate:
if (uri.Exists)
{
om = OpenMode.Read;
access = FileAccess.Read;
}
else
{
om = OpenMode.Write;
access = FileAccess.Write;
}
break;
case FileMode.Open:
om = OpenMode.Read;
access = FileAccess.Read;
break;
}
/* 644 */
FilePermissions perms = FilePermissions.UserRead |
FilePermissions.UserWrite |
FilePermissions.GroupRead |
FilePermissions.OtherRead;
Result result;
handle = null;
switch (mode)
{
case FileMode.Append:
if (uri.Exists)
{
if (async)
{
handle = Async.Open(uri, om,
(int)Async.Priority.Default,
callback);
Wait();
Async.Seek(handle, SeekPosition.End, 0, callback);
Wait();
}
else
{
handle = Sync.Open(uri, om);
result = Sync.Seek(handle, SeekPosition.End, 0);
Vfs.ThrowException(uri, result);
}
}
else
{
if (async)
{
handle = Async.Create(uri, om, true, perms,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Create(uri, om, true, perms);
}
}
break;
case FileMode.Create:
if (uri.Exists)
{
if (async)
{
handle = Async.Open(uri, om,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Open(uri, om);
result = uri.Truncate(0);
Vfs.ThrowException(uri, result);
}
}
else
{
handle = Sync.Create(uri, om, true, perms);
}
break;
case FileMode.CreateNew:
if (uri.Exists)
{
throw new IOException("Uri \"" + text_uri + "\" already exists.");
}
else
{
if (async)
{
handle = Async.Create(uri, om, true, perms,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Create(uri, om, true, perms);
}
}
break;
case FileMode.Open:
if (uri.Exists)
{
if (async)
{
handle = Async.Open(uri, om,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Open(uri, om);
}
}
else
{
throw new FileNotFoundException(text_uri);
}
break;
case FileMode.OpenOrCreate:
if (uri.Exists)
{
if (async)
{
handle = Async.Open(uri, om,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Open(uri, om);
}
}
else
{
if (async)
{
handle = Async.Create(uri, om, true, perms,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Create(uri, om, true, perms);
}
}
break;
case FileMode.Truncate:
if (uri.Exists)
{
result = uri.Truncate(0);
if (async)
{
handle = Async.Open(uri, om,
(int)Async.Priority.Default,
callback);
Wait();
}
else
{
handle = Sync.Open(uri, om);
Vfs.ThrowException(uri, result);
}
}
else
{
throw new FileNotFoundException(text_uri);
}
break;
}
this.mode = mode;
this.canseek = true;
this.async = async;
}
