/// <summary>
/// Get entry at <paramref name="subpath"/>.
/// </summary>
/// <param name="subpath"></param>
/// <returns></returns>
public ArchiveDirectoryEntry GetOrCreateDirectory(string subpath)
{
if (subpath == null)
{
throw new ArgumentNullException(nameof(subpath));
}
if (subpath == "")
{
return(this);
}
// Split to local dir name and rest of the path
int slashIx = subpath.IndexOf('/');
string localDirectoryName = slashIx < 0 ? subpath : subpath.Substring(0, slashIx);
string restOfThePath = slashIx < 0 ? null : subpath.Substring(slashIx + 1);
// Get-or-create local directory
ArchiveDirectoryEntry localDirectory = null;
if (!directories.TryGetValue(localDirectoryName, out localDirectory))
{
localDirectory = new ArchiveDirectoryEntry(localDirectoryName, LastModified, null, null);
directories[localDirectory.Name] = localDirectory;
}
// Return or recurse
return(restOfThePath == null ? localDirectory : localDirectory.GetOrCreateDirectory(restOfThePath));
}
/// <summary>
/// Find directory
/// </summary>
/// <param name="subpath">canonized path</param>
/// <returns>directory or null if was not found</returns>
public ArchiveDirectoryEntry GetDirectory(string subpath)
{
if (subpath == null)
{
throw new ArgumentNullException(nameof(subpath));
}
if (subpath == "")
{
return(this);
}
// Split to local dir name and rest of the path
int slashIx = subpath.IndexOf('/');
string localDirectoryName = slashIx < 0 ? subpath : subpath.Substring(0, slashIx);
string restOfThePath = slashIx < 0 ? null : subpath.Substring(slashIx + 1);
// Get local directory
ArchiveDirectoryEntry dir = null;
if (!directories.TryGetValue(localDirectoryName, out dir))
{
return(null);
}
// Return or recurse
return(restOfThePath == null ? dir : dir.GetDirectory(restOfThePath));
}
/// <summary>
/// Search directory from the read-only directory index.
/// </summary>
/// <param name="path"></param>
/// <returns></returns>
public virtual IDirectoryContents GetDirectoryContents(string path)
{
if (IsDisposing)
{
throw new ObjectDisposedException(GetType().FullName);
}
if (path == null)
{
path = "";
}
string canonizedPath = CanonizePath(path);
ArchiveDirectoryEntry dir = root.GetDirectory(canonizedPath);
return((IDirectoryContents)dir ?? NotFoundDirectoryContents.Singleton);
}
/// <summary>
/// Add <paramref name="archiveEntries"/> into tree structure.
/// </summary>
/// <param name="root"></param>
/// <param name="archiveEntries"></param>
/// <param name="streamProvider">stream provider for files</param>
/// <param name="convertBackslashesToSlashes">if true converts '\' to '/'</param>
/// <returns>this</returns>
protected virtual Lexical.FileProvider.Common.ArchiveDirectoryEntry AddArchiveEntries(Lexical.FileProvider.Common.ArchiveDirectoryEntry root, IEnumerable <IArchiveEntry> archiveEntries, Lexical.FileProvider.Common.IStreamProvider streamProvider, bool convertBackslashesToSlashes)
{
foreach (IArchiveEntry entry in archiveEntries)
{
string path = convertBackslashesToSlashes ? entry.Key.Replace('\\', '/') : entry.Key;
// Is entry a file
if (!entry.IsDirectory)
{
// Split to filename and path
int slashIx = path.LastIndexOf('/');
string filename = path.Substring(slashIx + 1);
string dirPath = slashIx < 0 ? "" : path.Substring(0, slashIx);
// Create file entry
Lexical.FileProvider.Common.ArchiveFileEntry fileEntry = new Lexical.FileProvider.Common.ArchiveFileEntry(streamProvider, entry.Key, filename, entry.Size, entry.LastModifiedTime ?? DateTime.MinValue);
// Create dir
Lexical.FileProvider.Common.ArchiveDirectoryEntry dir = root.GetOrCreateDirectory(dirPath);
// Add to dir
dir.files[filename] = fileEntry;
}
else
{
// Create dir
var dir = root.GetOrCreateDirectory(path);
if (entry.LastModifiedTime != null)
{
dir.LastModified = (DateTime)entry.LastModifiedTime;
}
}
}
// Return the whole tree
return(root);
}
/// <summary>
/// Find file
/// </summary>
/// <param name="canonizedPath">file path</param>
/// <returns>file or null</returns>
public ArchiveFileEntry GetFile(string canonizedPath)
{
if (canonizedPath == null)
{
throw new ArgumentNullException(nameof(canonizedPath));
}
if (canonizedPath == "")
{
return(null);
}
// Find slash
int slashIX = canonizedPath.IndexOf('/');
// No slash, return direct file
if (slashIX < 0)
{
ArchiveFileEntry result = null;
files.TryGetValue(canonizedPath, out result);
return(result);
}
// Got slash, find local dir
string localDirectoryName = canonizedPath.Substring(0, slashIX);
ArchiveDirectoryEntry localDirectory = null;
if (!directories.TryGetValue(localDirectoryName, out localDirectory))
{
return(null);
}
// Use recursion for the rest the path
string restOfThePath = canonizedPath.Substring(slashIX + 1);
return(localDirectory.GetFile(restOfThePath));
}
/// <summary>
/// Create archive content file provider.
/// </summary>
/// <param name="hintPath">(optional) clue of the file that is being opened</param>
/// <param name="lastModified">Date time for folder entries</param>
public ArchiveFileProvider(string hintPath, DateTimeOffset?lastModified = default)
{
this.root = new ArchiveDirectoryEntry("", lastModified ?? DateTimeOffset.MinValue, null, null);
this.HintPath = hintPath;
}
