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
88
89
90
91
92
93
94
|
using System.IO;
namespace SharpCompress.IO
{
internal class ReadOnlySubStream : Stream
{
public ReadOnlySubStream(Stream stream, long bytesToRead)
: this(stream, null, bytesToRead)
{
}
public ReadOnlySubStream(Stream stream, long? origin, long bytesToRead)
{
Stream = stream;
if (origin != null)
{
stream.Position = origin.Value;
}
BytesLeftToRead = bytesToRead;
}
protected override void Dispose(bool disposing)
{
if (disposing)
{
//Stream.Dispose();
}
}
private long BytesLeftToRead { get; set; }
public Stream Stream { get; private set; }
public override bool CanRead
{
get { return true; }
}
public override bool CanSeek
{
get { return false; }
}
public override bool CanWrite
{
get { return false; }
}
public override void Flush()
{
throw new System.NotImplementedException();
}
public override long Length
{
get { throw new System.NotImplementedException(); }
}
public override long Position
{
get { throw new System.NotImplementedException(); }
set { throw new System.NotImplementedException(); }
}
public override int Read(byte[] buffer, int offset, int count)
{
if (BytesLeftToRead < count)
{
count = (int)BytesLeftToRead;
}
int read = Stream.Read(buffer, offset, count);
if (read > 0)
{
BytesLeftToRead -= read;
}
return read;
}
public override long Seek(long offset, SeekOrigin origin)
{
throw new System.NotImplementedException();
}
public override void SetLength(long value)
{
throw new System.NotImplementedException();
}
public override void Write(byte[] buffer, int offset, int count)
{
throw new System.NotImplementedException();
}
}
}
|
