/// <summary>
/// 小数据流转换
/// </summary>
/// <param name="stream"></param>
/// <returns></returns>
public static System.IO.Stream ToTinyStream(this Java.IO.InputStream stream)
{
using (stream)
using (System.IO.MemoryStream memoryStream = new System.IO.MemoryStream())
{
byte[] buffer = fastCSharp.memoryPool.TinyBuffers.Get();
try
{
do
{
int length = stream.Read(buffer);
if (length == -1)
{
break;
}
if (length != 0)
{
memoryStream.Write(buffer, 0, length);
}
}while (true);
}
finally { fastCSharp.memoryPool.TinyBuffers.Push(ref buffer); }
return(new System.IO.MemoryStream(memoryStream.GetBuffer(), 0, (int)memoryStream.Position, false));
}
}
public override int Read(byte[] buffer, int offset, int count)
{
int res = BaseInputStream.Read(buffer, offset, count);
if (res == -1)
{
return(0);
}
return(res);
}
/// <summary>
/// Read a sequence of bytes from this stream and advance the position of this stream.
/// </summary>
/// <param name="buffer">Destination</param>
/// <param name="offset">Offset within the buffer</param>
/// <param name="count">Number of bytes to read.</param>
/// <returns>The total number of bytes read or 0 if the end of the stream has been reached.</returns>
public override int Read(byte[] buffer, int offset, int count)
{
while (true)
{
var rc = stream.Read(buffer, offset, count);
if (rc < 0)
{
return(0); // End of stream
}
if (rc > 0)
{
position += rc;
return(rc);
}
}
}
//
// Exception audit:
//
// Verdict
// Exception wrapping is required.
//
// Rationale
// `java.io.InputStream.read(byte[], int, int)` throws an exception, see:
//
// https://developer.android.com/reference/java/io/InputStream?hl=en#read(byte%5B%5D,%20int,%20int)
//
public override int Read(byte[] buffer, int offset, int count)
{
int res;
try {
res = BaseInputStream.Read(buffer, offset, count);
} catch (Java.IO.IOException ex) when(JNIEnv.ShouldWrapJavaException(ex))
{
throw new IOException(ex.Message, ex);
}
if (res == -1)
{
return(0);
}
return(res);
}
public static int read(this Java.IO.InputStream stream, byte[] b)
{
return(stream.Read(b));
}
