1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
//------------------------------------------------------------
// Copyright (c) Microsoft Corporation. All rights reserved.
//------------------------------------------------------------
namespace System.ServiceModel.Channels
{
using System;
using System.IO;
using System.Runtime;
using System.Xml;
class XmlBufferedByteStreamReader : XmlByteStreamReader
{
ByteStreamBufferedMessageData bufferedMessageData;
int offset;
static byte[] emptyByteArray = new byte[0];
public XmlBufferedByteStreamReader(ByteStreamBufferedMessageData bufferedMessageData, XmlDictionaryReaderQuotas quotas) : base (quotas)
{
Fx.Assert(bufferedMessageData != null, "bufferedMessageData is null");
this.bufferedMessageData = bufferedMessageData;
this.bufferedMessageData.Open();
this.offset = bufferedMessageData.Buffer.Offset;
this.quotas = quotas;
this.position = ReaderPosition.None;
}
protected override void OnClose()
{
this.bufferedMessageData.Close();
this.bufferedMessageData = null;
this.offset = 0;
base.OnClose();
}
public override int ReadContentAsBase64(byte[] buffer, int index, int count)
{
EnsureInContent();
ByteStreamMessageUtility.EnsureByteBoundaries(buffer, index, count, true);
if (count == 0)
{
return 0;
}
int bytesToCopy = Math.Min(bufferedMessageData.Buffer.Count - this.offset, count);
if (bytesToCopy == 0)
{
this.position = ReaderPosition.EndElement;
return 0;
}
Buffer.BlockCopy(this.bufferedMessageData.Buffer.Array, this.offset, buffer, index, bytesToCopy);
this.offset += bytesToCopy;
return bytesToCopy;
}
protected override byte[] OnToByteArray()
{
int bytesToCopy = bufferedMessageData.Buffer.Count;
byte[] buffer = new byte[bytesToCopy];
Buffer.BlockCopy(this.bufferedMessageData.Buffer.Array, this.bufferedMessageData.Buffer.Offset, buffer, 0, bytesToCopy);
return buffer;
}
protected override Stream OnToStream()
{
return this.bufferedMessageData.ToStream();
}
public override bool TryGetBase64ContentLength(out int length)
{
if (!this.IsClosed)
{
// in ByteStream encoder, we're not concerned about individual xml nodes
// therefore we can just return the entire segment of the buffer we're using in this reader.
length = bufferedMessageData.Buffer.Count;
return true;
}
length = -1;
return false;
}
}
}
|
