private static MyZipDirectory FindTreeNodeForKey(MyZipDirectory root, Tuple <string, ZipEntry> key)
{
var fullDirectoryPath = key.Item1;
var directoryZipEntry = key.Item2;
var directoryNames = fullDirectoryPath.Split('/');
var treeNodeForPreviousLevel = root;
var fullDirectoryPathSoFar = string.Empty;
foreach (var directoryName in directoryNames)
{
if (fullDirectoryPathSoFar.Length > 0)
{
fullDirectoryPathSoFar += "/";
}
fullDirectoryPathSoFar += directoryName;
var treeNodeForThisLevel = FindTreeNodeForDirectory(root, directoryName);
if (treeNodeForThisLevel != null)
{
treeNodeForPreviousLevel = treeNodeForThisLevel;
}
else
{
var newSubDirectory = new MyZipDirectory(fullDirectoryPathSoFar, directoryZipEntry);
if (treeNodeForPreviousLevel != null)
{
treeNodeForPreviousLevel.SubDirectories.Add(newSubDirectory);
treeNodeForPreviousLevel = newSubDirectory;
}
}
}
return(treeNodeForPreviousLevel);
}
public static IList <string> FindLeafDirectories(MyZipDirectory directory)
{
var leafDirectories = new List <string>();
FindLeafDirectories(leafDirectories, directory);
return(leafDirectories);
}
public static MyZipDirectory BuildTree(ZipFile zipFile)
{
var subDirectoriesToFiles = new Dictionary <Tuple <string, ZipEntry>, IList <ZipEntry> >();
var fileEntries = zipFile.EntriesSorted.Where(e => !e.IsDirectory);
foreach (var fileEntry in fileEntries)
{
var lastSlash = fileEntry.FileName.LastIndexOf('/');
var subDirectory = lastSlash >= 0 ? fileEntry.FileName.Substring(0, lastSlash) : string.Empty;
var subDirectoryWithTrailingSlash = subDirectory + "/";
var existingDirectoryZipEntry = subDirectoriesToFiles.Keys.FirstOrDefault(k => k.Item1 == subDirectory);
if (existingDirectoryZipEntry != null)
{
subDirectoriesToFiles[existingDirectoryZipEntry].Add(fileEntry);
}
else
{
var directoryZipEntry = FindDirectoryZipEntry(zipFile, subDirectoryWithTrailingSlash);
subDirectoriesToFiles.Add(Tuple.Create(subDirectory, directoryZipEntry), new List <ZipEntry> {
fileEntry
});
}
}
var root = new MyZipDirectory(string.Empty, null);
foreach (var kvp in subDirectoriesToFiles)
{
var treeNode = FindTreeNodeForKey(root, kvp.Key);
foreach (var fileEntry in kvp.Value)
{
treeNode.Files.Add(fileEntry);
}
}
return(root);
}
private static MyZipDirectory FindTreeNodeForDirectory(MyZipDirectory directory, string directoryName)
{
var lastDirectoryNameComponent = directory.DirectoryName.Split('/').LastOrDefault();
if (lastDirectoryNameComponent != null && lastDirectoryNameComponent == directoryName)
{
return(directory);
}
// ReSharper disable LoopCanBeConvertedToQuery
foreach (var subDirectory in directory.SubDirectories)
{
var result = FindTreeNodeForDirectory(subDirectory, directoryName);
if (result != null)
{
return(result);
}
}
// ReSharper restore LoopCanBeConvertedToQuery
return(null);
}
private static void FindLeafDirectories(ICollection <string> leafDirectories, MyZipDirectory directory)
{
if (directory.SubDirectories.Count == 0)
{
leafDirectories.Add(directory.DirectoryName);
return;
}
foreach (var subDirectory in directory.SubDirectories)
{
FindLeafDirectories(leafDirectories, subDirectory);
}
}