public InstallShieldCABCompression(Stream header, Dictionary <int, Stream> volumes)
{
this.volumes = volumes;
if (header.ReadUInt32() != 0x28635349)
{
throw new InvalidDataException("Not an Installshield CAB package");
}
header.Position += 8;
var cabDescriptorOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + 12;
var cabDescriptor = new CabDescriptor(header);
header.Position += 14;
var fileGroupOffsets = new uint[MaxFileGroupCount];
for (var i = 0; i < MaxFileGroupCount; i++)
{
fileGroupOffsets[i] = header.ReadUInt32();
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset;
var directories = new DirectoryDescriptor[cabDescriptor.DirectoryCount];
for (var i = 0; i < directories.Length; i++)
{
directories[i] = new DirectoryDescriptor(header, cabDescriptorOffset + cabDescriptor.FileTableOffset);
}
var fileGroups = new List <FileGroup>();
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
header.Position = cabDescriptorOffset + (long)nextOffset + 4;
var descriptorOffset = header.ReadUInt32();
nextOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + descriptorOffset;
fileGroups.Add(new FileGroup(header, cabDescriptorOffset));
}
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2;
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; i++)
{
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2 + i * 0x57;
var file = new FileDescriptor(header, i, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var path = "{0}\\{1}\\{2}".F(fileGroup.Name, directories[file.DirectoryIndex].Name, file.Filename);
index[path] = file;
}
}
}
public DriveDescriptor(string name, long size, long freeSpace, DirectoryDescriptor root)
{
Name = name;
Size = new ByteSize(size);
FreeSpace = new ByteSize(freeSpace);
Root = root;
}
public DiscEntityViewModel(DirectoryDescriptor directoryDescriptor)
{
Name = directoryDescriptor.Name;
IsAcessible = directoryDescriptor.IsAcessible;
Size = null;
Children = directoryDescriptor.Directories.Select(d => new DiscEntityViewModel(d)).Concat(
directoryDescriptor.Files.Select(d => new DiscEntityViewModel(d))
).ToArray();
}
public InstallShieldCABCompression(Stream header, Dictionary<int, Stream> volumes)
{
this.volumes = volumes;
if (header.ReadUInt32() != 0x28635349)
throw new InvalidDataException("Not an Installshield CAB package");
header.Position += 8;
var cabDescriptorOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + 12;
var cabDescriptor = new CabDescriptor(header);
header.Position += 14;
var fileGroupOffsets = new uint[MaxFileGroupCount];
for (var i = 0; i < MaxFileGroupCount; i++)
fileGroupOffsets[i] = header.ReadUInt32();
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset;
var directories = new DirectoryDescriptor[cabDescriptor.DirectoryCount];
for (var i = 0; i < directories.Length; i++)
directories[i] = new DirectoryDescriptor(header, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var fileGroups = new List<FileGroup>();
foreach (var offset in fileGroupOffsets)
{
var nextOffset = offset;
while (nextOffset != 0)
{
header.Position = cabDescriptorOffset + (long)nextOffset + 4;
var descriptorOffset = header.ReadUInt32();
nextOffset = header.ReadUInt32();
header.Position = cabDescriptorOffset + descriptorOffset;
fileGroups.Add(new FileGroup(header, cabDescriptorOffset));
}
}
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2;
foreach (var fileGroup in fileGroups)
{
for (var i = fileGroup.FirstFile; i <= fileGroup.LastFile; i++)
{
header.Position = cabDescriptorOffset + cabDescriptor.FileTableOffset + cabDescriptor.FileTableOffset2 + i * 0x57;
var file = new FileDescriptor(header, i, cabDescriptorOffset + cabDescriptor.FileTableOffset);
var path = "{0}\\{1}\\{2}".F(fileGroup.Name, directories[file.DirectoryIndex].Name, file.Filename);
index[path] = file;
}
}
}
