/// <summary>
/// Removes one of many files in storage. It creates a new Zip file.
/// </summary>
/// <param name="_zip">Reference to the current Zip object</param>
/// <param name="_zfes">List of Entries to remove from storage</param>
/// <returns>True if success, false if not</returns>
/// <remarks>This method only works for storage of type FileStream</remarks>
public static bool RemoveEntries(ref ZipStorer _zip, List <ZipFileEntry> _zfes)
{
if (!(_zip.ZipFileStream is FileStream))
{
throw new InvalidOperationException("RemoveEntries is allowed just over streams of type FileStream");
}
//Get full list of entries
List <ZipFileEntry> fullList = _zip.ReadCentralDir();
//In order to delete we need to create a copy of the zip file excluding the selected items
string tempZipName = Path.GetTempFileName();
string tempEntryFile = Path.GetTempFileName();
try
{
ZipStorer tempTargetZip = ZipStorer.Create(tempZipName, _zip.Comment);
foreach (ZipFileEntry zfe in fullList)
{
if (!_zfes.Contains(zfe))
{
if (_zip.ExtractFile(zfe, tempEntryFile))
{
tempTargetZip.AddFile(zfe.Method, tempEntryFile, zfe.FilenameInZip, zfe.Comment);
}
}
}
_zip.Close();
tempTargetZip.Close();
File.Delete(_zip.FileName);
File.Move(tempZipName, _zip.FileName);
_zip = ZipStorer.Open(_zip.FileName, _zip.Access);
}
catch
{
return(false);
}
finally
{
if (File.Exists(tempZipName))
{
File.Delete(tempZipName);
}
if (File.Exists(tempEntryFile))
{
File.Delete(tempEntryFile);
}
}
return(true);
}
public static void ExtractZipToDir(string zipFilePath, string extraDir)
{
using (ZipStorer zip = Open(zipFilePath, FileAccess.Read))
{
if (!Directory.Exists(extraDir))
{
Directory.CreateDirectory(extraDir);
}
zip.ReadCentralDirAction(delegate(ZipFileEntry f)
{
zip.ExtractFile(f, Path.Combine(extraDir, f.FilenameInZip));
});
}
}
/// <summary>
/// 释放包内文件到当前目录下并保留覆盖文件的文件备份
/// </summary>
/// <param name="zipFilePath">要释放的zip包文件</param>
/// <param name="extraDir">释放目录</param>
/// <param name="overrideFpkgPath">覆盖文件备份包名称,为空或不传值则自动命名</param>
public static void ExtractZipToDirWithOverrideBak(string zipFilePath, string extraDir, string overrideFpkgPath)
{
if (string.IsNullOrEmpty(overrideFpkgPath))
{
int idx = zipFilePath.IndexOf('.');
overrideFpkgPath = zipFilePath.Substring(0, idx) + "_overridebak.zip";
}
MemoryStream ms = new MemoryStream();
StreamWriter sw = new StreamWriter(ms);
int successCount = 0, failedBakCount = 0, overrideCount = 0;
using (ZipStorer zipBak = ZipStorer.Create(overrideFpkgPath, ""))
{
using (ZipStorer zip = Open(zipFilePath, FileAccess.Read))
{
if (!Directory.Exists(extraDir))
{
Directory.CreateDirectory(extraDir);
}
zip.ReadCentralDirAction(delegate(ZipFileEntry f)
{
string targetFilePath = Path.Combine(extraDir, f.FilenameInZip);
bool backupSuccess = true;
if (File.Exists(targetFilePath))
{
sw.Write(string.Format("#备份文件{0}", f.FilenameInZip));
try
{
zipBak.AddFile(Compression.Deflate, targetFilePath, f.FilenameInZip, "");
sw.WriteLine(" OK!");
successCount++;
}
catch (Exception bakEx)
{
backupSuccess = false;
sw.WriteLine();
sw.WriteLine(string.Format("\n#{0} 备份失败 \n#{1}", f.FilenameInZip, bakEx.Message.Replace("\n", "\n#")));
failedBakCount++;
}
}
if (!backupSuccess)
{
sw.WriteLine(string.Format("## {0} 因备份失败未更新", f.FilenameInZip));
}
else
{
try
{
zip.ExtractFile(f, targetFilePath);
overrideCount++;
}
catch (Exception ioEx)
{
sw.WriteLine(string.Format("\n##*{0} 覆盖失败 \n#{1}", f.FilenameInZip, ioEx.Message.Replace("\n", "\n#")));
}
}
});
}
}
sw.WriteLine(string.Format("# -> 共备份成功{0}个文件，{1}个失败，覆盖{2}个文件，{3}个文件未被更新！", successCount, failedBakCount, overrideCount, successCount - overrideCount));
sw.Flush();
sw.Close();
File.WriteAllBytes(overrideFpkgPath.Replace(".zip", ".log"), ms.ToArray());
ms.Close();
ms.Dispose();
}
