private static async Task DownloadAndExtractAsync(string url, string dir)
{
await using Stream httpStream = await HttpClientInstance.GetStreamAsync(url);
using IReader reader = ReaderFactory.Open(httpStream);
if (!Directory.Exists(dir))
{
Directory.CreateDirectory(dir);
}
while (reader.MoveToNextEntry())
{
IEntry entry = reader.Entry;
if (entry.IsDirectory)
{
continue;
}
string targetPath = Path.Combine(dir, entry.Key.Replace('/', '\\'));
string targetDir = Path.GetDirectoryName(targetPath);
if (targetDir == null)
{
throw new InvalidOperationException();
}
if (!Directory.Exists(targetDir))
{
Directory.CreateDirectory(targetDir);
}
await using EntryStream stream = reader.OpenEntryStream();
await using FileStream fs = File.Create(targetPath);
await stream.CopyToAsync(fs);
}
}
public static async Task ExtractAllAsync(IEnumerable <string> SourceItemGroup, string BaseDestPath, bool CreateFolder, ProgressChangedEventHandler ProgressHandler)
{
ulong TotalSize = 0;
ulong CurrentPosition = 0;
List <FileSystemStorageFile> TransformList = new List <FileSystemStorageFile>();
foreach (string FileItem in SourceItemGroup)
{
if (await FileSystemStorageItemBase.OpenAsync(FileItem).ConfigureAwait(false) is FileSystemStorageFile File)
{
TransformList.Add(File);
TotalSize += File.SizeRaw;
}
else
{
throw new FileNotFoundException("Could not found the file or path is a directory");
}
}
if (TotalSize == 0)
{
return;
}
foreach (FileSystemStorageFile File in TransformList)
{
string DestPath = BaseDestPath;
//如果解压到独立文件夹,则要额外创建目录
if (CreateFolder)
{
string NewFolderName = File.Name.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase)
? File.Name.Substring(0, File.Name.Length - 7)
: (File.Name.EndsWith(".tar.bz2", StringComparison.OrdinalIgnoreCase)
? File.Name.Substring(0, File.Name.Length - 8)
: Path.GetFileNameWithoutExtension(File.Name));
if (string.IsNullOrEmpty(NewFolderName))
{
NewFolderName = Globalization.GetString("Operate_Text_CreateFolder");
}
DestPath = await MakeSureCreateFolderHelperAsync(Path.Combine(BaseDestPath, NewFolderName));
}
if (File.Name.EndsWith(".gz", StringComparison.OrdinalIgnoreCase) && !File.Name.EndsWith(".tar.gz", StringComparison.OrdinalIgnoreCase))
{
await ExtractGZipAsync(File, DestPath, (s, e) =>
{
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32((CurrentPosition + Convert.ToUInt64(e.ProgressPercentage / 100d * File.SizeRaw)) * 100d / TotalSize), null));
});
CurrentPosition += Convert.ToUInt64(File.SizeRaw);
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32(CurrentPosition * 100d / TotalSize), null));
}
else if (File.Name.EndsWith(".bz2", StringComparison.OrdinalIgnoreCase) && !File.Name.EndsWith(".tar.bz2", StringComparison.OrdinalIgnoreCase))
{
await ExtractBZip2Async(File, DestPath, (s, e) =>
{
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32((CurrentPosition + Convert.ToUInt64(e.ProgressPercentage / 100d * File.SizeRaw)) * 100d / TotalSize), null));
});
CurrentPosition += Convert.ToUInt64(File.SizeRaw);
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32(CurrentPosition * 100d / TotalSize), null));
}
else
{
ReaderOptions ReadOptions = new ReaderOptions();
ReadOptions.ArchiveEncoding.Default = EncodingSetting;
using (FileStream InputStream = await File.GetFileStreamFromFileAsync(AccessMode.Read))
using (IReader Reader = ReaderFactory.Open(InputStream, ReadOptions))
{
Dictionary <string, string> DirectoryMap = new Dictionary <string, string>();
while (Reader.MoveToNextEntry())
{
if (Reader.Entry.IsDirectory)
{
string DirectoryPath = Path.Combine(DestPath, Reader.Entry.Key.Replace("/", @"\").TrimEnd('\\'));
string NewDirectoryPath = await MakeSureCreateFolderHelperAsync(DirectoryPath);
if (!DirectoryPath.Equals(NewDirectoryPath, StringComparison.OrdinalIgnoreCase))
{
DirectoryMap.Add(DirectoryPath, NewDirectoryPath);
}
}
else
{
string[] PathList = (Reader.Entry.Key?.Replace("/", @"\")?.Split(@"\")) ?? Array.Empty <string>();
string LastFolder = DestPath;
for (int i = 0; i < PathList.Length - 1; i++)
{
LastFolder = Path.Combine(LastFolder, PathList[i]);
if (DirectoryMap.ContainsKey(LastFolder))
{
LastFolder = DirectoryMap[LastFolder];
}
string NewDirectoryPath = await MakeSureCreateFolderHelperAsync(LastFolder);
if (!LastFolder.Equals(NewDirectoryPath, StringComparison.OrdinalIgnoreCase))
{
DirectoryMap.Add(LastFolder, NewDirectoryPath);
LastFolder = NewDirectoryPath;
}
}
string DestFileName = Path.Combine(LastFolder, PathList.LastOrDefault() ?? Path.GetFileNameWithoutExtension(File.Name));
if (await FileSystemStorageItemBase.CreateAsync(DestFileName, StorageItemTypes.File, CreateOption.GenerateUniqueName).ConfigureAwait(false) is FileSystemStorageFile NewFile)
{
using (FileStream OutputStream = await NewFile.GetFileStreamFromFileAsync(AccessMode.Write))
using (EntryStream EntryStream = Reader.OpenEntryStream())
{
await EntryStream.CopyToAsync(OutputStream, Reader.Entry.Size, (s, e) =>
{
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32((CurrentPosition + Convert.ToUInt64(e.ProgressPercentage / 100d * Reader.Entry.CompressedSize)) * 100d / TotalSize), null));
});
CurrentPosition += Convert.ToUInt64(Reader.Entry.CompressedSize);
ProgressHandler?.Invoke(null, new ProgressChangedEventArgs(Convert.ToInt32(CurrentPosition * 100d / TotalSize), null));
}
}
}
}
}
}
}
}