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Decode TRANS.TBL;1.

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This commit is contained in:
Natalia Portillo
2019-07-31 01:02:56 +01:00
parent a2314ff9d5
commit 25bf3737d3
3 changed files with 75 additions and 2 deletions
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62
DiscImageChef.Filesystems/ISO9660/Dir.cs
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@@ -1,6 +1,7 @@
using System;
using System.Collections.Generic;
using System.Globalization;
using System.IO;
using System.Linq;
using System.Text;
using DiscImageChef.CommonTypes.Structs;
@@ -161,6 +162,8 @@ namespace DiscImageChef.Filesystems.ISO9660
entryOff += record.length;
}
if(useTransTbl) DecodeTransTable(entries);
return entries;
}
@@ -274,12 +277,71 @@ namespace DiscImageChef.Filesystems.ISO9660
entryOff += record.length;
}
if(useTransTbl) DecodeTransTable(entries);
// Relocated directories should be shown in correct place when using Rock Ridge namespace
return @namespace == Namespace.Rrip
? entries.Where(e => !e.Value.RockRidgeRelocated).ToDictionary(x => x.Key, x => x.Value)
: entries;
}
void DecodeTransTable(Dictionary<string, DecodedDirectoryEntry> entries)
{
KeyValuePair<string, DecodedDirectoryEntry> transTblEntry =
entries.FirstOrDefault(e => !e.Value.Flags.HasFlag(FileFlags.Directory) &&
(e.Value.Filename.ToLower(CultureInfo.CurrentUICulture) == "trans.tbl" ||
e.Value.Filename.ToLower(CultureInfo.CurrentUICulture) == "trans.tbl;1"));
if(transTblEntry.Value == null) return;
uint transTblSectors = transTblEntry.Value.Size / 2048;
if(transTblEntry.Value.Size % 2048 > 0) transTblSectors++;
byte[] transTbl = image.ReadSectors(transTblEntry.Value.Extent, transTblSectors);
MemoryStream mr = new MemoryStream(transTbl, 0, (int)transTblEntry.Value.Size, false);
StreamReader sr = new StreamReader(mr, Encoding);
string line = sr.ReadLine();
while(line != null)
{
// Skip the type field and the first space
string cutLine = line.Substring(2);
int spaceIndex = cutLine.IndexOf(' ');
string originalName = cutLine.Substring(0, spaceIndex);
string originalNameWithVersion;
string newName = cutLine.Substring(spaceIndex + 1);
if(originalName.EndsWith(";1", StringComparison.Ordinal))
{
originalNameWithVersion = originalName.ToLower(CultureInfo.CurrentUICulture);
originalName = originalNameWithVersion.Substring(0, originalName.Length - 2);
}
else
{
originalName = originalName.ToLower(CultureInfo.CurrentUICulture);
originalNameWithVersion = originalName + ";1";
}
// Pre-read next line
line = sr.ReadLine();
KeyValuePair<string, DecodedDirectoryEntry> originalEntry =
entries.FirstOrDefault(e => !e.Value.Flags.HasFlag(FileFlags.Directory) &&
(e.Value.Filename.ToLower(CultureInfo.CurrentUICulture) ==
originalName ||
e.Value.Filename.ToLower(CultureInfo.CurrentUICulture) ==
originalNameWithVersion));
originalEntry.Value.Filename = newName;
entries.Remove(originalEntry.Key);
entries[newName] = originalEntry.Value;
}
entries.Remove(transTblEntry.Key);
}
void DecodeSystemArea(byte[] data, int start, int end, ref DecodedDirectoryEntry entry,
out bool hasResourceFork)
{