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Aaru, Archives, CHDs all in folders
This commit is contained in:
Matt Nadareski
818
SabreTools.FileTypes/Archives/ZipArchive.cs
Normal file
818
SabreTools.FileTypes/Archives/ZipArchive.cs
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@@ -0,0 +1,818 @@
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using System;
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using System.Collections.Generic;
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using System.IO;
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using System.Linq;
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using SabreTools.Core;
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using SabreTools.Core.Tools;
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using Compress;
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using Compress.ZipFile;
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using NaturalSort;
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namespace SabreTools.FileTypes.Archives
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{
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/// <summary>
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/// Represents a Zip archive for reading and writing
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/// </summary>
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public class ZipArchive : BaseArchive
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{
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#region Constants
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private const uint LocalFileHeaderSignature = 0x04034b50;
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private const uint EndOfLocalFileHeaderSignature = 0x08074b50;
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private const uint CentralDirectoryHeaderSignature = 0x02014b50;
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private const uint EndOfCentralDirSignature = 0x06054b50;
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private const uint Zip64EndOfCentralDirSignature = 0x06064b50;
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private const uint Zip64EndOfCentralDirectoryLocator = 0x07064b50;
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private const uint TorrentZipFileDateTime = 0x2198BC00;
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/* TorrentZip Header Format
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https://pkware.cachefly.net/webdocs/APPNOTE/APPNOTE_6.2.0.txt
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http://www.romvault.com/trrntzip_explained.doc
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00-03 Local file header signature (0x50, 0x4B, 0x03, 0x04) ZipSignature
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04-05 Version needed to extract (0x14, 0x00)
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06-07 General purpose bit flag (0x02, 0x00)
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08-09 Compression method (0x08, 0x00)
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0A-0B Last mod file time (0x00, 0xBC)
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0C-0D Last mod file date (0x98, 0x21)
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*/
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private readonly static byte[] TorrentZipHeader = new byte[] { 0x50, 0x4b, 0x03, 0x04, 0x14, 0x00, 0x02, 0x00, 0x08, 0x00, 0x00, 0xbc, 0x98, 0x21 };
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#endregion
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#region Constructors
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/// <summary>
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/// Create a new TorrentZipArchive with no base file
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/// </summary>
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public ZipArchive()
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: base()
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{
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this.Type = FileType.ZipArchive;
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}
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/// <summary>
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/// Create a new TorrentZipArchive from the given file
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/// </summary>
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/// <param name="filename">Name of the file to use as an archive</param>
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/// <param name="read">True for opening file as read, false for opening file as write</param>
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/// <param name="getHashes">True if hashes for this file should be calculated, false otherwise (default)</param>
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public ZipArchive(string filename, bool getHashes = false)
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: base(filename, getHashes)
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{
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this.Type = FileType.ZipArchive;
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}
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#endregion
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#region Extraction
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/// <inheritdoc/>
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public override bool CopyAll(string outDir)
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{
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bool encounteredErrors = true;
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try
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{
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// Create the temp directory
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Directory.CreateDirectory(outDir);
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// Extract all files to the temp directory
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ZipFile zf = new ZipFile();
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ZipReturn zr = zf.ZipFileOpen(this.Filename, -1, true);
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if (zr != ZipReturn.ZipGood)
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{
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throw new Exception(ZipFile.ZipErrorMessageText(zr));
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}
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for (int i = 0; i < zf.LocalFilesCount() && zr == ZipReturn.ZipGood; i++)
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{
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// Open the read stream
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zr = zf.ZipFileOpenReadStream(i, false, out Stream readStream, out ulong streamsize, out ushort cm);
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// Create the rest of the path, if needed
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if (!string.IsNullOrWhiteSpace(Path.GetDirectoryName(zf.Filename(i))))
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{
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Directory.CreateDirectory(Path.Combine(outDir, Path.GetDirectoryName(zf.Filename(i))));
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}
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// If the entry ends with a directory separator, continue to the next item, if any
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if (zf.Filename(i).EndsWith(Path.DirectorySeparatorChar.ToString())
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|| zf.Filename(i).EndsWith(Path.AltDirectorySeparatorChar.ToString())
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|| zf.Filename(i).EndsWith(Path.PathSeparator.ToString()))
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{
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zf.ZipFileCloseReadStream();
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continue;
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}
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FileStream writeStream = File.Create(Path.Combine(outDir, zf.Filename(i)));
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// If the stream is smaller than the buffer, just run one loop through to avoid issues
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if (streamsize < _bufferSize)
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{
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byte[] ibuffer = new byte[streamsize];
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int ilen = readStream.Read(ibuffer, 0, (int)streamsize);
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writeStream.Write(ibuffer, 0, ilen);
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writeStream.Flush();
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}
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// Otherwise, we do the normal loop
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else
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{
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int realBufferSize = (streamsize < _bufferSize ? (int)streamsize : _bufferSize);
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byte[] ibuffer = new byte[realBufferSize];
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int ilen;
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while ((ilen = readStream.Read(ibuffer, 0, realBufferSize)) > 0)
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{
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writeStream.Write(ibuffer, 0, ilen);
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writeStream.Flush();
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}
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}
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zr = zf.ZipFileCloseReadStream();
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writeStream.Dispose();
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}
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zf.ZipFileClose();
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encounteredErrors = false;
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}
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catch (EndOfStreamException ex)
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{
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// Catch this but don't count it as an error because SharpCompress is unsafe
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logger.Verbose(ex);
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}
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catch (InvalidOperationException ex)
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{
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logger.Warning(ex);
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encounteredErrors = true;
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}
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catch (Exception ex)
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{
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logger.Error(ex);
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encounteredErrors = true;
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}
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return encounteredErrors;
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}
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/// <inheritdoc/>
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public override string CopyToFile(string entryName, string outDir)
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{
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// Try to extract a stream using the given information
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(MemoryStream ms, string realEntry) = CopyToStream(entryName);
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// If the memory stream and the entry name are both non-null, we write to file
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if (ms != null && realEntry != null)
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{
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realEntry = Path.Combine(outDir, realEntry);
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// Create the output subfolder now
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Directory.CreateDirectory(Path.GetDirectoryName(realEntry));
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// Now open and write the file if possible
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FileStream fs = File.Create(realEntry);
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if (fs != null)
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{
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ms.Seek(0, SeekOrigin.Begin);
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byte[] zbuffer = new byte[_bufferSize];
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int zlen;
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while ((zlen = ms.Read(zbuffer, 0, _bufferSize)) > 0)
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{
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fs.Write(zbuffer, 0, zlen);
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fs.Flush();
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}
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ms?.Dispose();
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fs?.Dispose();
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}
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else
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{
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ms?.Dispose();
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fs?.Dispose();
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realEntry = null;
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}
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}
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return realEntry;
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}
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/// <inheritdoc/>
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public override (MemoryStream, string) CopyToStream(string entryName)
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{
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MemoryStream ms = new MemoryStream();
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string realEntry = null;
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try
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{
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ZipFile zf = new ZipFile();
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ZipReturn zr = zf.ZipFileOpen(this.Filename, -1, true);
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if (zr != ZipReturn.ZipGood)
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{
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throw new Exception(ZipFile.ZipErrorMessageText(zr));
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}
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for (int i = 0; i < zf.LocalFilesCount() && zr == ZipReturn.ZipGood; i++)
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{
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if (zf.Filename(i).Contains(entryName))
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{
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// Open the read stream
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realEntry = zf.Filename(i);
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zr = zf.ZipFileOpenReadStream(i, false, out Stream readStream, out ulong streamsize, out ushort cm);
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// If the stream is smaller than the buffer, just run one loop through to avoid issues
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if (streamsize < _bufferSize)
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{
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byte[] ibuffer = new byte[streamsize];
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int ilen = readStream.Read(ibuffer, 0, (int)streamsize);
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ms.Write(ibuffer, 0, ilen);
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ms.Flush();
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}
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// Otherwise, we do the normal loop
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else
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{
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byte[] ibuffer = new byte[_bufferSize];
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int ilen;
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while (streamsize > _bufferSize)
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{
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ilen = readStream.Read(ibuffer, 0, _bufferSize);
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ms.Write(ibuffer, 0, ilen);
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ms.Flush();
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streamsize -= _bufferSize;
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}
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ilen = readStream.Read(ibuffer, 0, (int)streamsize);
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ms.Write(ibuffer, 0, ilen);
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ms.Flush();
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}
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zr = zf.ZipFileCloseReadStream();
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}
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}
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zf.ZipFileClose();
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}
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catch (Exception ex)
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{
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logger.Error(ex);
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ms = null;
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realEntry = null;
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}
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return (ms, realEntry);
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}
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#endregion
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#region Information
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/// <inheritdoc/>
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public override List<BaseFile> GetChildren()
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{
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List<BaseFile> found = new List<BaseFile>();
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string gamename = Path.GetFileNameWithoutExtension(this.Filename);
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try
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{
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ZipFile zf = new ZipFile();
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ZipReturn zr = zf.ZipFileOpen(this.Filename, -1, true);
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if (zr != ZipReturn.ZipGood)
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{
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throw new Exception(ZipFile.ZipErrorMessageText(zr));
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}
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for (int i = 0; i < zf.LocalFilesCount(); i++)
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{
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// If the entry is a directory (or looks like a directory), we don't want to open it
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if (zf.IsDirectory(i)
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|| zf.Filename(i).EndsWith(Path.DirectorySeparatorChar.ToString())
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|| zf.Filename(i).EndsWith(Path.AltDirectorySeparatorChar.ToString())
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|| zf.Filename(i).EndsWith(Path.PathSeparator.ToString()))
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{
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continue;
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}
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// Open the read stream
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zr = zf.ZipFileOpenReadStream(i, false, out Stream readStream, out ulong streamsize, out ushort cm);
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// If we get a read error, log it and continue
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if (zr != ZipReturn.ZipGood)
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{
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logger.Warning($"An error occurred while reading archive {this.Filename}: Zip Error - {zr}");
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zr = zf.ZipFileCloseReadStream();
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continue;
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}
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// Create a blank item for the entry
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BaseFile zipEntryRom = new BaseFile();
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// Perform a quickscan, if flagged to
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if (this.AvailableHashes == Hash.CRC)
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{
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zipEntryRom.Size = (long)zf.UncompressedSize(i);
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zipEntryRom.CRC = zf.CRC32(i);
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}
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// Otherwise, use the stream directly
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else
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{
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zipEntryRom = GetInfo(readStream, size: (long)zf.UncompressedSize(i), hashes: this.AvailableHashes, keepReadOpen: true);
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}
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// Fill in comon details and add to the list
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zipEntryRom.Filename = zf.Filename(i);
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zipEntryRom.Parent = gamename;
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zipEntryRom.Date = zf.LastModified(i).ToString("yyyy/MM/dd hh:mm:ss");
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found.Add(zipEntryRom);
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}
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// Dispose of the archive
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zr = zf.ZipFileCloseReadStream();
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zf.ZipFileClose();
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}
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catch (Exception ex)
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{
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logger.Error(ex);
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return null;
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}
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return found;
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}
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/// <inheritdoc/>
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public override List<string> GetEmptyFolders()
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{
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List<string> empties = new List<string>();
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try
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{
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ZipFile zf = new ZipFile();
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ZipReturn zr = zf.ZipFileOpen(this.Filename, -1, true);
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if (zr != ZipReturn.ZipGood)
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{
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throw new Exception(ZipFile.ZipErrorMessageText(zr));
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}
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List<(string, bool)> zipEntries = new List<(string, bool)>();
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for (int i = 0; i < zf.LocalFilesCount(); i++)
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{
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zipEntries.Add((zf.Filename(i), zf.IsDirectory(i)));
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}
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zipEntries = zipEntries.OrderBy(p => p.Item1, new NaturalReversedComparer()).ToList();
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string lastZipEntry = null;
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foreach ((string, bool) entry in zipEntries)
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{
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// If the current is a superset of last, we skip it
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if (lastZipEntry != null && lastZipEntry.StartsWith(entry.Item1))
|
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{
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// No-op
|
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}
|
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// If the entry is a directory, we add it
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||||
else
|
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{
|
||||
if (entry.Item2)
|
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{
|
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empties.Add(entry.Item1);
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}
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lastZipEntry = entry.Item1;
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}
|
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}
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}
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catch (Exception ex)
|
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{
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logger.Error(ex);
|
||||
}
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|
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return empties;
|
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}
|
||||
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/// <inheritdoc/>
|
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public override bool IsTorrent()
|
||||
{
|
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ZipFile zf = new ZipFile();
|
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ZipReturn zr = zf.ZipFileOpen(this.Filename, -1, true);
|
||||
if (zr != ZipReturn.ZipGood)
|
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{
|
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throw new Exception(ZipFile.ZipErrorMessageText(zr));
|
||||
}
|
||||
|
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return zf.ZipStatus == ZipStatus.TrrntZip;
|
||||
}
|
||||
|
||||
#endregion
|
||||
|
||||
#region Writing
|
||||
|
||||
/// <inheritdoc/>
|
||||
public override bool Write(string inputFile, string outDir, BaseFile baseFile)
|
||||
{
|
||||
// Get the file stream for the file and write out
|
||||
return Write(File.OpenRead(inputFile), outDir, baseFile);
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
public override bool Write(Stream inputStream, string outDir, BaseFile baseFile)
|
||||
{
|
||||
bool success = false;
|
||||
string tempFile = Path.Combine(outDir, $"tmp{Guid.NewGuid()}");
|
||||
|
||||
// If either input is null or empty, return
|
||||
if (inputStream == null || baseFile == null || baseFile.Filename == null)
|
||||
return success;
|
||||
|
||||
// If the stream is not readable, return
|
||||
if (!inputStream.CanRead)
|
||||
return success;
|
||||
|
||||
// Seek to the beginning of the stream
|
||||
inputStream.Seek(0, SeekOrigin.Begin);
|
||||
|
||||
// Get the output archive name from the first rebuild rom
|
||||
string archiveFileName = Path.Combine(outDir, Utilities.RemovePathUnsafeCharacters(baseFile.Parent) + (baseFile.Parent.EndsWith(".zip") ? string.Empty : ".zip"));
|
||||
|
||||
// Set internal variables
|
||||
Stream writeStream = null;
|
||||
ZipFile oldZipFile = new ZipFile();
|
||||
ZipFile zipFile = new ZipFile();
|
||||
ZipReturn zipReturn = ZipReturn.ZipGood;
|
||||
|
||||
try
|
||||
{
|
||||
// If the full output path doesn't exist, create it
|
||||
if (!Directory.Exists(Path.GetDirectoryName(archiveFileName)))
|
||||
Directory.CreateDirectory(Path.GetDirectoryName(archiveFileName));
|
||||
|
||||
// If the archive doesn't exist, create it and put the single file
|
||||
if (!File.Exists(archiveFileName))
|
||||
{
|
||||
inputStream.Seek(0, SeekOrigin.Begin);
|
||||
zipReturn = zipFile.ZipFileCreate(tempFile);
|
||||
|
||||
// Open the input file for reading
|
||||
ulong istreamSize = (ulong)(inputStream.Length);
|
||||
|
||||
DateTime dt = DateTime.Now;
|
||||
if (UseDates && !string.IsNullOrWhiteSpace(baseFile.Date) && DateTime.TryParse(baseFile.Date.Replace('\\', '/'), out dt))
|
||||
{
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
|
||||
zipFile.ZipFileOpenWriteStream(false, false, baseFile.Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
}
|
||||
else
|
||||
{
|
||||
zipFile.ZipFileOpenWriteStream(false, true, baseFile.Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, null, out writeStream);
|
||||
}
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = inputStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
|
||||
zipFile.ZipFileCloseWriteStream(baseFile.CRC);
|
||||
}
|
||||
|
||||
// Otherwise, sort the input files and write out in the correct order
|
||||
else
|
||||
{
|
||||
// Open the old archive for reading
|
||||
oldZipFile.ZipFileOpen(archiveFileName, -1, true);
|
||||
|
||||
// Map all inputs to index
|
||||
Dictionary<string, int> inputIndexMap = new Dictionary<string, int>();
|
||||
var oldZipFileContents = new List<string>();
|
||||
for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
|
||||
{
|
||||
oldZipFileContents.Add(oldZipFile.Filename(i));
|
||||
}
|
||||
|
||||
// If the old one doesn't contain the new file, then add it
|
||||
if (!oldZipFileContents.Contains(baseFile.Filename.Replace('\\', '/')))
|
||||
inputIndexMap.Add(baseFile.Filename.Replace('\\', '/'), -1);
|
||||
|
||||
// Then add all of the old entries to it too
|
||||
for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
|
||||
{
|
||||
inputIndexMap.Add(oldZipFile.Filename(i), i);
|
||||
}
|
||||
|
||||
// If the number of entries is the same as the old archive, skip out
|
||||
if (inputIndexMap.Keys.Count <= oldZipFile.LocalFilesCount())
|
||||
{
|
||||
success = true;
|
||||
return success;
|
||||
}
|
||||
|
||||
// Otherwise, process the old zipfile
|
||||
zipFile.ZipFileCreate(tempFile);
|
||||
|
||||
// Get the order for the entries with the new file
|
||||
List<string> keys = inputIndexMap.Keys.ToList();
|
||||
keys.Sort(ZipFile.TrrntZipStringCompare);
|
||||
|
||||
// Copy over all files to the new archive
|
||||
foreach (string key in keys)
|
||||
{
|
||||
// Get the index mapped to the key
|
||||
int index = inputIndexMap[key];
|
||||
|
||||
// If we have the input file, add it now
|
||||
if (index < 0)
|
||||
{
|
||||
// Open the input file for reading
|
||||
ulong istreamSize = (ulong)(inputStream.Length);
|
||||
|
||||
DateTime dt = DateTime.Now;
|
||||
if (UseDates && !string.IsNullOrWhiteSpace(baseFile.Date) && DateTime.TryParse(baseFile.Date.Replace('\\', '/'), out dt))
|
||||
{
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
|
||||
zipFile.ZipFileOpenWriteStream(false, false, baseFile.Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
}
|
||||
else
|
||||
{
|
||||
zipFile.ZipFileOpenWriteStream(false, true, baseFile.Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, null, out writeStream);
|
||||
}
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = inputStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
|
||||
zipFile.ZipFileCloseWriteStream(baseFile.CRC);
|
||||
}
|
||||
|
||||
// Otherwise, copy the file from the old archive
|
||||
else
|
||||
{
|
||||
// Instantiate the streams
|
||||
oldZipFile.ZipFileOpenReadStream(index, false, out Stream zreadStream, out ulong istreamSize, out ushort icompressionMethod);
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(oldZipFile.LastModified(index));
|
||||
zipFile.ZipFileOpenWriteStream(false, true, oldZipFile.Filename(index), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = zreadStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
|
||||
oldZipFile.ZipFileCloseReadStream();
|
||||
zipFile.ZipFileCloseWriteStream(oldZipFile.CRC32(index));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Close the output zip file
|
||||
zipFile.ZipFileClose();
|
||||
oldZipFile.ZipFileClose();
|
||||
|
||||
success = true;
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
logger.Error(ex);
|
||||
success = false;
|
||||
}
|
||||
finally
|
||||
{
|
||||
}
|
||||
|
||||
// If the old file exists, delete it and replace
|
||||
if (File.Exists(archiveFileName))
|
||||
File.Delete(archiveFileName);
|
||||
|
||||
File.Move(tempFile, archiveFileName);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
public override bool Write(List<string> inputFiles, string outDir, List<BaseFile> baseFiles)
|
||||
{
|
||||
bool success = false;
|
||||
string tempFile = Path.Combine(outDir, $"tmp{Guid.NewGuid()}");
|
||||
|
||||
// If either list of roms is null or empty, return
|
||||
if (inputFiles == null || baseFiles == null || inputFiles.Count == 0 || baseFiles.Count == 0)
|
||||
{
|
||||
return success;
|
||||
}
|
||||
|
||||
// If the number of inputs is less than the number of available roms, return
|
||||
if (inputFiles.Count < baseFiles.Count)
|
||||
{
|
||||
return success;
|
||||
}
|
||||
|
||||
// If one of the files doesn't exist, return
|
||||
foreach (string file in inputFiles)
|
||||
{
|
||||
if (!File.Exists(file))
|
||||
{
|
||||
return success;
|
||||
}
|
||||
}
|
||||
|
||||
// Get the output archive name from the first rebuild rom
|
||||
string archiveFileName = Path.Combine(outDir, Utilities.RemovePathUnsafeCharacters(baseFiles[0].Parent) + (baseFiles[0].Parent.EndsWith(".zip") ? string.Empty : ".zip"));
|
||||
|
||||
// Set internal variables
|
||||
Stream writeStream = null;
|
||||
ZipFile oldZipFile = new ZipFile();
|
||||
ZipFile zipFile = new ZipFile();
|
||||
ZipReturn zipReturn = ZipReturn.ZipGood;
|
||||
|
||||
try
|
||||
{
|
||||
// If the full output path doesn't exist, create it
|
||||
if (!Directory.Exists(Path.GetDirectoryName(archiveFileName)))
|
||||
{
|
||||
Directory.CreateDirectory(Path.GetDirectoryName(archiveFileName));
|
||||
}
|
||||
|
||||
// If the archive doesn't exist, create it and put the single file
|
||||
if (!File.Exists(archiveFileName))
|
||||
{
|
||||
zipReturn = zipFile.ZipFileCreate(tempFile);
|
||||
|
||||
// Map all inputs to index
|
||||
Dictionary<string, int> inputIndexMap = new Dictionary<string, int>();
|
||||
for (int i = 0; i < inputFiles.Count; i++)
|
||||
{
|
||||
inputIndexMap.Add(baseFiles[i].Filename.Replace('\\', '/'), i);
|
||||
}
|
||||
|
||||
// Sort the keys in TZIP order
|
||||
List<string> keys = inputIndexMap.Keys.ToList();
|
||||
keys.Sort(ZipFile.TrrntZipStringCompare);
|
||||
|
||||
// Now add all of the files in order
|
||||
foreach (string key in keys)
|
||||
{
|
||||
// Get the index mapped to the key
|
||||
int index = inputIndexMap[key];
|
||||
|
||||
// Open the input file for reading
|
||||
Stream freadStream = File.OpenRead(inputFiles[index]);
|
||||
ulong istreamSize = (ulong)(new FileInfo(inputFiles[index]).Length);
|
||||
|
||||
DateTime dt = DateTime.Now;
|
||||
if (UseDates && !string.IsNullOrWhiteSpace(baseFiles[index].Date) && DateTime.TryParse(baseFiles[index].Date.Replace('\\', '/'), out dt))
|
||||
{
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
|
||||
zipFile.ZipFileOpenWriteStream(false, false, baseFiles[index].Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
}
|
||||
else
|
||||
{
|
||||
zipFile.ZipFileOpenWriteStream(false, true, baseFiles[index].Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, null, out writeStream);
|
||||
}
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = freadStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
|
||||
freadStream.Dispose();
|
||||
zipFile.ZipFileCloseWriteStream(baseFiles[index].CRC);
|
||||
}
|
||||
}
|
||||
|
||||
// Otherwise, sort the input files and write out in the correct order
|
||||
else
|
||||
{
|
||||
// Open the old archive for reading
|
||||
oldZipFile.ZipFileOpen(archiveFileName, -1, true);
|
||||
|
||||
// Map all inputs to index
|
||||
Dictionary<string, int> inputIndexMap = new Dictionary<string, int>();
|
||||
for (int i = 0; i < inputFiles.Count; i++)
|
||||
{
|
||||
var oldZipFileContents = new List<string>();
|
||||
for (int j = 0; j < oldZipFile.LocalFilesCount(); j++)
|
||||
{
|
||||
oldZipFileContents.Add(oldZipFile.Filename(j));
|
||||
}
|
||||
|
||||
// If the old one contains the new file, then just skip out
|
||||
if (oldZipFileContents.Contains(baseFiles[i].Filename.Replace('\\', '/')))
|
||||
{
|
||||
continue;
|
||||
}
|
||||
|
||||
inputIndexMap.Add(baseFiles[i].Filename.Replace('\\', '/'), -(i + 1));
|
||||
}
|
||||
|
||||
// Then add all of the old entries to it too
|
||||
for (int i = 0; i < oldZipFile.LocalFilesCount(); i++)
|
||||
{
|
||||
inputIndexMap.Add(oldZipFile.Filename(i), i);
|
||||
}
|
||||
|
||||
// If the number of entries is the same as the old archive, skip out
|
||||
if (inputIndexMap.Keys.Count <= oldZipFile.LocalFilesCount())
|
||||
{
|
||||
success = true;
|
||||
return success;
|
||||
}
|
||||
|
||||
// Otherwise, process the old zipfile
|
||||
zipFile.ZipFileCreate(tempFile);
|
||||
|
||||
// Get the order for the entries with the new file
|
||||
List<string> keys = inputIndexMap.Keys.ToList();
|
||||
keys.Sort(ZipFile.TrrntZipStringCompare);
|
||||
|
||||
// Copy over all files to the new archive
|
||||
foreach (string key in keys)
|
||||
{
|
||||
// Get the index mapped to the key
|
||||
int index = inputIndexMap[key];
|
||||
|
||||
// If we have the input file, add it now
|
||||
if (index < 0)
|
||||
{
|
||||
// Open the input file for reading
|
||||
Stream freadStream = File.OpenRead(inputFiles[-index - 1]);
|
||||
ulong istreamSize = (ulong)(new FileInfo(inputFiles[-index - 1]).Length);
|
||||
|
||||
DateTime dt = DateTime.Now;
|
||||
if (UseDates && !string.IsNullOrWhiteSpace(baseFiles[-index - 1].Date) && DateTime.TryParse(baseFiles[-index - 1].Date.Replace('\\', '/'), out dt))
|
||||
{
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(dt);
|
||||
zipFile.ZipFileOpenWriteStream(false, false, baseFiles[-index - 1].Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
}
|
||||
else
|
||||
{
|
||||
zipFile.ZipFileOpenWriteStream(false, true, baseFiles[-index - 1].Filename.Replace('\\', '/'), istreamSize, (ushort)CompressionMethod.Deflated, null, out writeStream);
|
||||
}
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = freadStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
freadStream.Dispose();
|
||||
zipFile.ZipFileCloseWriteStream(baseFiles[-index - 1].CRC);
|
||||
}
|
||||
|
||||
// Otherwise, copy the file from the old archive
|
||||
else
|
||||
{
|
||||
// Instantiate the streams
|
||||
oldZipFile.ZipFileOpenReadStream(index, false, out Stream zreadStream, out ulong istreamSize, out ushort icompressionMethod);
|
||||
uint msDosDateTime = Utilities.ConvertDateTimeToMsDosTimeFormat(oldZipFile.LastModified(index));
|
||||
zipFile.ZipFileOpenWriteStream(false, true, oldZipFile.Filename(index), istreamSize, (ushort)CompressionMethod.Deflated, msDosDateTime, out writeStream);
|
||||
|
||||
// Copy the input stream to the output
|
||||
byte[] ibuffer = new byte[_bufferSize];
|
||||
int ilen;
|
||||
while ((ilen = zreadStream.Read(ibuffer, 0, _bufferSize)) > 0)
|
||||
{
|
||||
writeStream.Write(ibuffer, 0, ilen);
|
||||
writeStream.Flush();
|
||||
}
|
||||
|
||||
zipFile.ZipFileCloseWriteStream(oldZipFile.CRC32(index));
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// Close the output zip file
|
||||
zipFile.ZipFileClose();
|
||||
oldZipFile.ZipFileClose();
|
||||
|
||||
success = true;
|
||||
}
|
||||
catch (Exception ex)
|
||||
{
|
||||
logger.Error(ex);
|
||||
success = false;
|
||||
}
|
||||
|
||||
// If the old file exists, delete it and replace
|
||||
if (File.Exists(archiveFileName))
|
||||
{
|
||||
File.Delete(archiveFileName);
|
||||
}
|
||||
File.Move(tempFile, archiveFileName);
|
||||
|
||||
return true;
|
||||
}
|
||||
|
||||
#endregion
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user