解压缩对于我们日常工作太经常用到了,毕竟它有诸多好处,比如节省空间、方便管理传输、保密作用等等。
而对于我们开发人员来说,项目开发也是经常需要用到,今天就给大家推荐用一个可以用于压缩、解压、解密,并支持多种压缩类型和格式的开源项目。
项目简介
这是一个纯C#压缩库,用于.NET Standard 2.0、2.1、.NET Core 3.1和.NET 5.0,支持格式有zip/tar/bzip2/gzip/lzip,功能实现有解压缩rar, 解压缩7zip, 解压缩zip, 解压缩tar解压缩bzip2, 解压缩gzip, 解压缩lzip。
项目结构
使用方法
**压缩核心代码
**
protected void Write(CompressionType compressionType, string archive, string archiveToVerifyAgainst, Encoding encoding = null)
{
using (Stream stream = File.OpenWrite(Path.Combine(SCRATCH2_FILES_PATH, archive)))
{
WriterOptions writerOptions = new WriterOptions(compressionType)
{
LeaveStreamOpen = true,
};
writerOptions.ArchiveEncoding.Default = encoding ?? Encoding.Default;
using (var writer = WriterFactory.Open(stream, type, writerOptions))
{
writer.WriteAll(ORIGINAL_FILES_PATH, "*", SearchOption.AllDirectories);
}
}
CompareArchivesByPath(Path.Combine(SCRATCH2_FILES_PATH, archive),
Path.Combine(TEST_ARCHIVES_PATH, archiveToVerifyAgainst));
using (Stream stream = File.OpenRead(Path.Combine(SCRATCH2_FILES_PATH, archive)))
{
ReaderOptions readerOptions = new ReaderOptions();
readerOptions.ArchiveEncoding.Default = encoding ?? Encoding.Default;
using (var reader = ReaderFactory.Open(NonDisposingStream.Create(stream), readerOptions))
{
reader.WriteAllToDirectory(SCRATCH_FILES_PATH, new ExtractionOptions()
{
ExtractFullPath = true
});
}
}
VerifyFiles();
}
解压核心代码
public abstract class ReaderTests : TestBase
{
protected void Read(string testArchive, CompressionType expectedCompression, ReaderOptions options = null)
{
testArchive = Path.Combine(TEST_ARCHIVES_PATH, testArchive);
options = options ?? new ReaderOptions();
options.LeaveStreamOpen = true;
ReadImpl(testArchive, expectedCompression, options);
options.LeaveStreamOpen = false;
ReadImpl(testArchive, expectedCompression, options);
VerifyFiles();
}
private void ReadImpl(string testArchive, CompressionType expectedCompression, ReaderOptions options)
{
using (var file = File.OpenRead(testArchive))
{
using (var protectedStream = NonDisposingStream.Create(new ForwardOnlyStream(file), throwOnDispose: true))
{
using (var testStream = new TestStream(protectedStream))
{
using (var reader = ReaderFactory.Open(testStream, options))
{
UseReader(reader, expectedCompression);
protectedStream.ThrowOnDispose = false;
Assert.False(testStream.IsDisposed, "{nameof(testStream)} prematurely closed");
}
// Boolean XOR -- If the stream should be left open (true), then the stream should not be diposed (false)
// and if the stream should be closed (false), then the stream should be disposed (true)
var message = $"{nameof(options.LeaveStreamOpen)} is set to '{options.LeaveStreamOpen}', so {nameof(testStream.IsDisposed)} should be set to '{!testStream.IsDisposed}', but is set to {testStream.IsDisposed}";
Assert.True(options.LeaveStreamOpen != testStream.IsDisposed, message);
}
}
}
}
public void UseReader(IReader reader, CompressionType expectedCompression)
{
while (reader.MoveToNextEntry())
{
if (!reader.Entry.IsDirectory)
{
Assert.Equal(expectedCompression, reader.Entry.CompressionType);
reader.WriteEntryToDirectory(SCRATCH_FILES_PATH, new ExtractionOptions()
{
ExtractFullPath = true,
Overwrite = true
});
}
}
}
}
zip压缩用法
Write(CompressionType.None, "Zip.none.noEmptyDirs.zip", "Zip.none.noEmptyDirs.zip", Encoding.UTF8);
zip解压用法
Read("Zip.zipx", CompressionType.LZMA);
项目还未支持
- RAR 5 解密
- 7Zip 写入
- Zip64 解压缩
- 多卷Zip支持
项目地址: https://github.com/adamhathcock/sharpcompress
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