136 lines
4.7 KiB
C#
136 lines
4.7 KiB
C#
//
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// Copyright (c) 2008-2011, Kenneth Bell
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//
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// Permission is hereby granted, free of charge, to any person obtaining a
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// copy of this software and associated documentation files (the "Software"),
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// to deal in the Software without restriction, including without limitation
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// the rights to use, copy, modify, merge, publish, distribute, sublicense,
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// and/or sell copies of the Software, and to permit persons to whom the
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// Software is furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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// FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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// DEALINGS IN THE SOFTWARE.
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//
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using System;
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using System.Globalization;
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using System.IO;
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using System.Text;
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using DiscUtils.CoreCompat;
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using DiscUtils.Internal;
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namespace DiscUtils.Iso9660
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{
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/// <summary>
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/// Represents a file that will be built into the ISO image.
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/// </summary>
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public sealed class BuildFileInfo : BuildDirectoryMember
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{
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private readonly byte[] _contentData;
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private readonly string _contentPath;
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private readonly long _contentSize;
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private readonly Stream _contentStream;
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internal BuildFileInfo(string name, BuildDirectoryInfo parent, byte[] content)
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: base(IsoUtilities.NormalizeFileName(name), MakeShortFileName(name, parent))
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{
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Parent = parent;
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_contentData = content;
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_contentSize = content.Length;
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}
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internal BuildFileInfo(string name, BuildDirectoryInfo parent, string content)
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: base(IsoUtilities.NormalizeFileName(name), MakeShortFileName(name, parent))
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{
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Parent = parent;
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_contentPath = content;
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_contentSize = new FileInfo(_contentPath).Length;
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CreationTime = new FileInfo(_contentPath).LastWriteTimeUtc;
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}
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internal BuildFileInfo(string name, BuildDirectoryInfo parent, Stream source)
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: base(IsoUtilities.NormalizeFileName(name), MakeShortFileName(name, parent))
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{
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Parent = parent;
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_contentStream = source;
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_contentSize = _contentStream.Length;
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}
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/// <summary>
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/// The parent directory, or <c>null</c> if none.
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/// </summary>
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public override BuildDirectoryInfo Parent { get; }
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internal override long GetDataSize(Encoding enc)
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{
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return _contentSize;
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}
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internal Stream OpenStream()
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{
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if (_contentData != null)
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{
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return new MemoryStream(_contentData, false);
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}
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if (_contentPath != null)
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{
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var locator = new LocalFileLocator(string.Empty);
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return locator.Open(_contentPath, FileMode.Open, FileAccess.Read, FileShare.Read);
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}
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return _contentStream;
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}
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internal void CloseStream(Stream s)
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{
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// Close and dispose the stream, unless it's one we were given to stream in
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// from (we might need it again).
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if (_contentStream != s)
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{
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s.Dispose();
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}
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}
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private static string MakeShortFileName(string longName, BuildDirectoryInfo dir)
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{
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if (IsoUtilities.IsValidFileName(longName))
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{
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return longName;
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}
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char[] shortNameChars = longName.ToUpper(CultureInfo.InvariantCulture).ToCharArray();
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for (int i = 0; i < shortNameChars.Length; ++i)
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{
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if (!IsoUtilities.IsValidDChar(shortNameChars[i]) && shortNameChars[i] != '.' && shortNameChars[i] != ';')
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{
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shortNameChars[i] = '_';
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}
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}
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string[] parts = IsoUtilities.SplitFileName(new string(shortNameChars));
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if (parts[0].Length + parts[1].Length > 30)
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{
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parts[1] = parts[1].Substring(0, Math.Min(parts[1].Length, 3));
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}
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if (parts[0].Length + parts[1].Length > 30)
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{
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parts[0] = parts[0].Substring(0, 30 - parts[1].Length);
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}
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string candidate = parts[0] + '.' + parts[1] + ';' + parts[2];
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// TODO: Make unique
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return candidate;
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}
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}
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} |