59 lines
1.9 KiB
C#
59 lines
1.9 KiB
C#
//-----------------------------------------------------------------------------
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//
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// Copyright (c) Microsoft. All rights reserved.
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// This code is licensed under the Microsoft Public License.
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// THIS CODE IS PROVIDED *AS IS* WITHOUT WARRANTY OF
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// ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING ANY
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// IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR
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// PURPOSE, MERCHANTABILITY, OR NON-INFRINGEMENT.
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//
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//-----------------------------------------------------------------------------
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using System;
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namespace Microsoft.Cci.Pdb {
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internal class MsfDirectory {
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internal MsfDirectory(PdbReader reader, PdbFileHeader head, BitAccess bits) {
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int pages = reader.PagesFromSize(head.directorySize);
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// 0..n in page of directory pages.
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bits.MinCapacity(head.directorySize);
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int directoryRootPages = head.directoryRoot.Length;
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int pagesPerPage = head.pageSize / 4;
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int pagesToGo = pages;
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for (int i = 0; i < directoryRootPages; i++) {
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int pagesInThisPage = pagesToGo <= pagesPerPage ? pagesToGo : pagesPerPage;
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reader.Seek(head.directoryRoot[i], 0);
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bits.Append(reader.reader, pagesInThisPage * 4);
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pagesToGo -= pagesInThisPage;
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}
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bits.Position = 0;
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DataStream stream = new DataStream(head.directorySize, bits, pages);
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bits.MinCapacity(head.directorySize);
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stream.Read(reader, bits);
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// 0..3 in directory pages
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int count;
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bits.ReadInt32(out count);
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// 4..n
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int[] sizes = new int[count];
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bits.ReadInt32(sizes);
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// n..m
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streams = new DataStream[count];
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for (int i = 0; i < count; i++) {
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if (sizes[i] <= 0) {
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streams[i] = new DataStream();
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} else {
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streams[i] = new DataStream(sizes[i], bits,
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reader.PagesFromSize(sizes[i]));
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}
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}
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}
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internal DataStream[] streams;
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}
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}
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