private static BodyReadStream InternalTryCreateBodyStream(ICoreItem coreItem, BodyReadConfiguration configuration, bool createEmtpyStreamIfNotFound, long?length)
{
BodyReadStream result;
using (DisposeGuard disposeGuard = default(DisposeGuard))
{
Stream stream = BodyReadStream.OpenBodyStream(coreItem);
disposeGuard.Add <Stream>(stream);
Stream stream2 = stream;
if (stream2 == null)
{
if (!createEmtpyStreamIfNotFound)
{
return(null);
}
stream2 = Body.GetEmptyStream();
}
ConversionCallbackBase conversionCallbackBase;
Stream disposable = BodyReadDelegates.CreateStream(coreItem, configuration, stream2, out conversionCallbackBase);
disposeGuard.Add <Stream>(disposable);
BodyReadStream bodyReadStream = new BodyReadStream(stream, disposable, conversionCallbackBase, length);
disposeGuard.Add <BodyReadStream>(bodyReadStream);
disposeGuard.Success();
result = bodyReadStream;
}
return(result);
}
internal BodyTextReader(ICoreItem coreItem, BodyReadConfiguration configuration, Stream inputStream)
{
using (DisposeGuard disposeGuard = this.Guard())
{
Stream stream = null;
TextReader textReader = null;
bool flag = false;
this.disposeTracker = this.GetDisposeTracker();
try
{
if (inputStream == null)
{
stream = BodyReadStream.OpenBodyStream(coreItem);
inputStream = stream;
}
if (inputStream == null)
{
inputStream = Body.GetEmptyStream();
}
textReader = BodyReadDelegates.CreateReader(coreItem, configuration, inputStream, out this.conversionCallbacks);
flag = true;
}
finally
{
if (!flag && stream != null)
{
stream.Dispose();
}
}
this.reader = textReader;
this.bodyStream = stream;
this.isDisposed = false;
disposeGuard.Success();
}
}
internal static BodyReadStream TryCreateBodyReadStream(ICoreItem coreItem, BodyReadConfiguration configuration, bool createEmtpyStreamIfNotFound)
{
BodyReadStream bodyReadStream = BodyReadStream.InternalTryCreateBodyStream(coreItem, configuration, createEmtpyStreamIfNotFound, null);
if (configuration.ShouldCalculateLength)
{
long streamLength = BodyReadStream.GetStreamLength(bodyReadStream);
bodyReadStream.Dispose();
bodyReadStream = BodyReadStream.InternalTryCreateBodyStream(coreItem, configuration, createEmtpyStreamIfNotFound, new long?(streamLength));
}
return(bodyReadStream);
}
private static long GetStreamLength(BodyReadStream stream)
{
if (stream == null)
{
return(0L);
}
long result;
using (Stream stream2 = new BodyStreamSizeCounter(null))
{
result = Util.StreamHandler.CopyStreamData(stream, stream2);
}
return(result);
}
private Stream InternalOpenReadStream(BodyReadConfiguration configuration, bool createEmptyStreamIfNotFound)
{
Body.CheckNull(configuration, "configuration");
this.CheckStreamingExceptions();
Stream result;
lock (this.bodyStreamsLock)
{
this.CheckOpenBodyStreamForRead();
BodyReadStream bodyReadStream = BodyReadStream.TryCreateBodyReadStream(this.coreItem, configuration, createEmptyStreamIfNotFound);
this.bodyReadStreams.Add(bodyReadStream);
result = bodyReadStream;
}
return(result);
}
public int GetLastNBytesAsString(int lastNBytesToRead, out string readString)
{
int result;
using (Stream stream = BodyReadStream.OpenBodyStream(this.coreItem))
{
readString = null;
byte[] bytes;
int num = Util.StreamHandler.ReadLastBytesOfStream(stream, lastNBytesToRead, out bytes);
if (num > 0)
{
readString = this.GetBodyEncoding().GetString(bytes, 0, num);
}
result = num;
}
return(result);
}
