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source: branches/CodeEditor/HeuristicLab.ExtLibs/HeuristicLab.Cecil/0.9.5/Mono.Cecil-0.9.5/Mono.Cecil/Mono.Cecil.Metadata/UserStringHeap.cs @ 11700

Last change on this file since 11700 was 11700, checked in by jkarder, 9 years ago

#2077: created branch and added first version

File size: 1.8 KB
Line 
1//
2// UserStringHeap.cs
3//
4// Author:
5//   Jb Evain (jbevain@gmail.com)
6//
7// Copyright (c) 2008 - 2011 Jb Evain
8//
9// Permission is hereby granted, free of charge, to any person obtaining
10// a copy of this software and associated documentation files (the
11// "Software"), to deal in the Software without restriction, including
12// without limitation the rights to use, copy, modify, merge, publish,
13// distribute, sublicense, and/or sell copies of the Software, and to
14// permit persons to whom the Software is furnished to do so, subject to
15// the following conditions:
16//
17// The above copyright notice and this permission notice shall be
18// included in all copies or substantial portions of the Software.
19//
20// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
21// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
22// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
23// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
24// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
25// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
26// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
27//
28
29using System;
30
31using Mono.Cecil.PE;
32
33namespace Mono.Cecil.Metadata {
34
35  sealed class UserStringHeap : StringHeap {
36
37    public UserStringHeap (Section section, uint start, uint size)
38      : base (section, start, size)
39    {
40    }
41
42    protected override string ReadStringAt (uint index)
43    {
44      byte [] data = Section.Data;
45      int start = (int) (index + Offset);
46
47      uint length = (uint) (data.ReadCompressedUInt32 (ref start) & ~1);
48      if (length < 1)
49        return string.Empty;
50
51      var chars = new char [length / 2];
52
53      for (int i = start, j = 0; i < start + length; i += 2)
54        chars [j++] = (char) (data [i] | (data [i + 1] << 8));
55
56      return new string (chars);
57    }
58  }
59}
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