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// Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information.
namespace WixToolset.Dtf.Compression.Zip
{
using System;
using System.IO;
using System.Runtime.Serialization;
/// <summary>
/// Object representing a compressed file within a zip package; provides operations for getting
/// the file properties and extracting the file.
/// </summary>
[Serializable]
public class ZipFileInfo : ArchiveFileInfo
{
private long compressedLength;
private ZipCompressionMethod compressionMethod;
/// <summary>
/// Creates a new ZipFileInfo object representing a file within a zip in a specified path.
/// </summary>
/// <param name="zipInfo">An object representing the zip archive containing the file.</param>
/// <param name="filePath">The path to the file within the zip archive. Usually, this is a simple file
/// name, but if the zip archive contains a directory structure this may include the directory.</param>
public ZipFileInfo(ZipInfo zipInfo, string filePath)
: base(zipInfo, filePath)
{
if (zipInfo == null)
{
throw new ArgumentNullException("zipInfo");
}
}
/// <summary>
/// Creates a new ZipFileInfo object with all parameters specified,
/// used internally when reading the metadata out of a zip archive.
/// </summary>
/// <param name="filePath">The internal path and name of the file in the zip archive.</param>
/// <param name="zipNumber">The zip archive number where the file starts.</param>
/// <param name="attributes">The stored attributes of the file.</param>
/// <param name="lastWriteTime">The stored last write time of the file.</param>
/// <param name="length">The uncompressed size of the file.</param>
/// <param name="compressedLength">The compressed size of the file.</param>
/// <param name="compressionMethod">Compression algorithm used for this file.</param>
internal ZipFileInfo(
string filePath,
int zipNumber,
FileAttributes attributes,
DateTime lastWriteTime,
long length,
long compressedLength,
ZipCompressionMethod compressionMethod)
: base(filePath, zipNumber, attributes, lastWriteTime, length)
{
this.compressedLength = compressedLength;
this.compressionMethod = compressionMethod;
}
/// <summary>
/// Initializes a new instance of the ZipFileInfo class with serialized data.
/// </summary>
/// <param name="info">The SerializationInfo that holds the serialized object data about the exception being thrown.</param>
/// <param name="context">The StreamingContext that contains contextual information about the source or destination.</param>
protected ZipFileInfo(SerializationInfo info, StreamingContext context)
: base(info, context)
{
this.compressedLength = info.GetInt64("compressedLength");
}
/// <summary>
/// Gets the compressed size of the file in bytes.
/// </summary>
public long CompressedLength
{
get
{
return this.compressedLength;
}
}
/// <summary>
/// Gets the method used to compress this file.
/// </summary>
public ZipCompressionMethod CompressionMethod
{
get
{
return this.compressionMethod;
}
}
/// <summary>
/// Sets the SerializationInfo with information about the archive.
/// </summary>
/// <param name="info">The SerializationInfo that holds the serialized object data.</param>
/// <param name="context">The StreamingContext that contains contextual information
/// about the source or destination.</param>
public override void GetObjectData(SerializationInfo info, StreamingContext context)
{
base.GetObjectData(info, context);
info.AddValue("compressedLength", this.compressedLength);
}
}
}
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