/***
* 将当前的entry写到指定目录,保留文件信息,如果文件存在, 覆盖文件
* 返回临时目录
* */
public static string writeEntryToTemp(IArchiveEntry entry)
{
//string tempDir = ConfigurationManager.AppSettings["tempDir"];
bool successed = false;
try
{
entry.WriteToDirectory(tempDir, ExtractOptions.ExtractFullPath | ExtractOptions.Overwrite);
successed = true;
}
catch (Exception ex)
{
if (File.Exists(Path.Combine(tempDir, entry.Key)))
{
string msg = "!!!!!!!!!!发生异常, 但是文件解压成功：" + ex.Message + ex.StackTrace;
MessageUtil.DoAppendTBDetail(msg);
LogHelper.WriteExportErrorLog(msg);
successed = true;
}
else
{
string msg = "!!!!!!!!!!发生异常, 解压失败：" + ex.Message + ex.StackTrace;
MessageUtil.DoAppendTBDetail(msg);
LogHelper.WriteExportErrorLog(msg);
successed = false;
}
}
if (successed)
{
return(Path.Combine(tempDir, entry.Key));
}
else
{
return("");
}
}
/// <summary>
/// Extract to specific directory, retaining filename
/// </summary>
public static void WriteToDirectory(this IArchiveEntry entry, string destinationPath,
ExtractOptions options = ExtractOptions.Overwrite)
{
entry.WriteToDirectory(destinationPath, new NullExtractionListener(), options);
}
/// <summary>
/// 解压数据操作
/// </summary>
/// <param name="e">参数</param>
private void DecompressDataWork(DecompressDataStartArgs e)
{
Exception error = null;
bool cancelled = false;
try
{
using (MemoryStream stream = new MemoryStream(e.Data))
{
ReaderOptions readerOptions = new ReaderOptions();
readerOptions.ArchiveEncoding.Default = Encoding.Default;
using (IArchive archive = ArchiveFactory.Open(stream, readerOptions))
{
this.m_Progress.ToComplete = archive.TotalUncompressSize;
string deleteEntry = e.DeleteEntry;
string lastEntry = e.LastEntry;
string destinationDirectory = e.DestinationDirectory;
ExtractionOptions extractionOptions = new ExtractionOptions {
ExtractFullPath = true, Overwrite = true, PreserveFileTime = true
};
IArchiveEntry last = null;
foreach (IArchiveEntry entry in archive.Entries)
{
if (this.m_Cancelled)
{
cancelled = true;
return;
}
if (entry.IsDirectory)
{
continue;
}
if (last == null && entry.Key.Equals(lastEntry, StringComparison.OrdinalIgnoreCase))
{
last = entry;
continue;
}
if (entry.Key.Equals(deleteEntry, StringComparison.OrdinalIgnoreCase))
{
DeleteFromDirectory(entry, destinationDirectory, extractionOptions);
}
else
{
entry.WriteToDirectory(destinationDirectory, extractionOptions);
}
this.m_Progress.Completed += entry.Size;
this.PostDecompressProgressChanged(this.m_Progress, this.m_AsyncOp);
}
if (last != null)
{
if (this.m_Cancelled)
{
cancelled = true;
return;
}
if (last.Key.Equals(deleteEntry, StringComparison.OrdinalIgnoreCase))
{
DeleteFromDirectory(last, destinationDirectory, extractionOptions);
}
else
{
last.WriteToDirectory(destinationDirectory, extractionOptions);
}
this.m_Progress.Completed += last.Size;
this.PostDecompressProgressChanged(this.m_Progress, this.m_AsyncOp);
}
}
}
}
catch (Exception exp)
{
error = exp;
}
finally
{
this.DecompressDataAsyncCallback(error, cancelled, this.m_AsyncOp);
}
}