60 lines
1.0 KiB
C#
60 lines
1.0 KiB
C#
//
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// Author:
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// Jb Evain (jbevain@gmail.com)
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//
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// Copyright (c) 2008 - 2015 Jb Evain
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// Copyright (c) 2008 - 2011 Novell, Inc.
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//
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// Licensed under the MIT/X11 license.
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//
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using System.Collections.Generic;
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using System.Text;
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namespace MonoFN.Cecil.Metadata {
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class StringHeap : Heap {
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readonly Dictionary<uint, string> strings = new Dictionary<uint, string> ();
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public StringHeap (byte [] data)
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: base (data)
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{
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}
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public string Read (uint index)
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{
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if (index == 0)
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return string.Empty;
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string @string;
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if (strings.TryGetValue (index, out @string))
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return @string;
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if (index > data.Length - 1)
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return string.Empty;
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@string = ReadStringAt (index);
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if (@string.Length != 0)
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strings.Add (index, @string);
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return @string;
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}
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protected virtual string ReadStringAt (uint index)
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{
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int length = 0;
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int start = (int)index;
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for (int i = start; ; i++) {
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if (data [i] == 0)
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break;
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length++;
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}
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return Encoding.UTF8.GetString (data, start, length);
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}
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}
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}
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