protected override int DoExecute(ITaskContextInternal context)
{
OSPlatform os = context.Properties.GetOSPlatform();
DoLogInfo($"Extract {_fileName} to {_destination}");
if (!Directory.Exists(_destination))
{
Directory.CreateDirectory(_destination);
}
using (Stream zip = File.OpenRead(_fileName))
using (ZipArchive archive = new ZipArchive(zip, ZipArchiveMode.Read))
{
ZipArchiveEntry metaEntry = archive.Entries.FirstOrDefault(i => i.FullName == Zipper.MetadataFileName);
ZipMetadata metadata = null;
if (metaEntry != null)
{
using (Stream ms = metaEntry.Open())
using (var sr = new StreamReader(ms))
{
var serializer = new JsonSerializer();
metadata = serializer.Deserialize <ZipMetadata>(new JsonTextReader(sr));
}
}
foreach (ZipArchiveEntry entry in archive.Entries)
{
string zipFile = entry.FullName;
if (zipFile.EndsWith("/"))
{
continue;
}
if (metadata == null)
{
ExtractToFiles(context, entry, os, new List <string> {
zipFile
});
continue;
}
ZipMetadataItem metaItem = metadata.Items.FirstOrDefault(i => i.FileName == zipFile);
if (metaItem == null)
{
DoLogInfo($"{zipFile} not found in metadata!");
continue;
}
ExtractToFiles(context, entry, os, metaItem.DestinationFiles);
}
}
return(0);
}
/// <summary>
/// Get Zip Metadata using stream
/// Feature is supported in version 18.5 or greater of the API
/// </summary>
public static void GetZipMatadataUsingStream()
{
try
{
using (Stream stream = File.Open(Common.MapSourceFilePath(filePath), FileMode.Open, FileAccess.ReadWrite))
{
using (ZipFormat format = new ZipFormat(stream))
{
// get info
ZipMetadata info = format.ZipInfo;
// get total entries
Console.WriteLine("Total Entries : {0}, ", info.TotalEntries);
//get comments
Console.WriteLine("Comments : {0}, ", info.Comment);
foreach (var fileInfo in info.Files)
{
// get file name
Console.WriteLine("File Name : {0}, ", fileInfo.Name);
// get compressed size
Console.WriteLine("CompressedSize : {0}, ", fileInfo.CompressedSize);
// get uncompressed size
Console.WriteLine("UncompressedSize : {0}, ", fileInfo.UncompressedSize);
// get compression method
Console.WriteLine("CompressionMethod : {0}, ", fileInfo.CompressionMethod);
}
}
// The stream is still open here
}
}
catch (Exception ex)
{
Console.WriteLine(ex.Message);
}
}
/// <summary>
/// Gets info of Zip file
/// </summary>
///
public static void GetZipMatadata()
{
try
{
//ExStart:GetZipMatadata
// initialize
using (ZipFormat zipFormat = new ZipFormat(Common.MapSourceFilePath(filePath)))
{
// get info
ZipMetadata info = zipFormat.ZipInfo;
// get total entries
Console.WriteLine("Total Entries : {0}, ", info.TotalEntries);
//get comments
Console.WriteLine("Comments : {0}, ", info.Comment);
foreach (var fileInfo in info.Files)
{
// get file name
Console.WriteLine("File Name : {0}, ", fileInfo.Name);
// get compressed size
Console.WriteLine("CompressedSize : {0}, ", fileInfo.CompressedSize);
// get uncompressed size
Console.WriteLine("UncompressedSize : {0}, ", fileInfo.UncompressedSize);
// get compression method
Console.WriteLine("CompressionMethod : {0}, ", fileInfo.CompressionMethod);
}
}
//ExEnd:GetZipMatadata
}
catch (Exception exp)
{
Console.WriteLine(exp.Message);
}
}
