private static ArchiveFile CreateFileFromEntry(ArchiveDirectory parent, string name, IArchiveEntry entry)
{
return(new ArchiveFile(
parent,
name,
entry.Length,
entry.CompressedLength));
}
private static void RecursiveGetNameLength(ref int value, ArchiveDirectory parent)
{
if (parent.Parent != null)
{
RecursiveGetNameLength(ref value, parent.Parent);
value += parent.Name.Length + 1;
}
}
private static void RecursiveAppend(StringBuilder builder, ArchiveDirectory parent)
{
if (parent.Parent != null)
{
// calling this function again before appending the current
// name creates the full name by unwinding the hierarchy
RecursiveAppend(builder, parent.Parent);
builder.Append(parent.Name);
builder.Append('/');
}
}
private static ArchiveDirectory CreateDirectoryTree(string[] segments, int offset, int count, ArchiveDirectory topDir)
{
if (offset >= count)
{
return(topDir);
}
string segment = segments[offset];
if (!topDir.Directories.TryGetValue(segment, out var subDir))
{
subDir = new ArchiveDirectory(topDir, segment);
topDir.Directories.Add(segment, subDir);
}
return(CreateDirectoryTree(segments, offset + 1, count, subDir));
}
public ArchiveDirectory BuildTree(IArchive archive, ProgressDelegate onProgress)
{
var topDir = new ArchiveDirectory(null, archive.Name);
int processed = 0;
foreach (IArchiveEntry entry in archive)
{
string[] segments = GetPathSegments(entry.FullName);
if (entry.IsDirectory)
{
CreateDirectoryTree(segments, 0, segments.Length, topDir);
}
else
{
if (segments.Length == 1)
{
string segment = segments[0];
var file = CreateFileFromEntry(topDir, segment, entry);
topDir.Files.Add(segment, file);
}
else
{
var dir = CreateDirectoryTree(segments, 0, segments.Length - 1, topDir);
string segment = segments[segments.Length - 1];
var file = CreateFileFromEntry(topDir, segment, entry);
dir.Files.Add(segment, file);
}
}
processed++;
onProgress?.Invoke(processed / (float)archive.Count);
}
return(topDir);
}
public ArchiveDirectory(ArchiveDirectory parent, string name) : base(parent, name)
{
Directories = new Dictionary <string, ArchiveDirectory>(StringComparer.Ordinal);
Files = new Dictionary <string, ArchiveFile>(StringComparer.Ordinal);
}
protected ArchiveItem(ArchiveDirectory parent, string name)
{
Parent = parent;
Name = name;
}