sharpcompress/tests/SharpCompress.Test/Tar/TarReaderTests.cs

using System;
using System.Collections.Generic;
using System.IO;
using SharpCompress.Common;
using SharpCompress.Readers;
using SharpCompress.Readers.Tar;
using SharpCompress.Test.Mocks;
using Xunit;

namespace SharpCompress.Test.Tar;

public class TarReaderTests : ReaderTests
{
    public TarReaderTests() => UseExtensionInsteadOfNameToVerify = true;
    /*
        [Fact]
        public void Tar_Reader() => Read("Tar.tar", CompressionType.None);
    
        [Fact]
        public void Tar_Skip()
        {
            using Stream stream = new ForwardOnlyStream(
                File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar"))
            );
            using var reader = ReaderFactory.Open(stream);
            var x = 0;
            while (reader.MoveToNextEntry())
            {
                if (!reader.Entry.IsDirectory)
                {
                    x++;
                    if (x % 2 == 0)
                    {
                        reader.WriteEntryToDirectory(
                            SCRATCH_FILES_PATH,
                            new ExtractionOptions { ExtractFullPath = true, Overwrite = true }
                        );
                    }
                }
            }
        }
    
        [Fact]
        public void Tar_Z_Reader() => Read("Tar.tar.Z", CompressionType.Lzw);
    
        [Fact]
        public void Tar_BZip2_Reader() => Read("Tar.tar.bz2", CompressionType.BZip2);
    
        [Fact]
        public void Tar_GZip_Reader() => Read("Tar.tar.gz", CompressionType.GZip);
    
        [Fact]
        public void Tar_ZStandard_Reader() => Read("Tar.tar.zst", CompressionType.ZStandard);
    
        [Fact]
        public void Tar_LZip_Reader() => Read("Tar.tar.lz", CompressionType.LZip);
    
        [Fact]
        public void Tar_Xz_Reader() => Read("Tar.tar.xz", CompressionType.Xz);
    
        [Fact]
        public void Tar_GZip_OldGnu_Reader() => Read("Tar.oldgnu.tar.gz", CompressionType.GZip);
    
        [Fact]
        public void Tar_BZip2_Entry_Stream()
        {
            using (Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.bz2")))
            using (var reader = TarReader.Open(stream))
            {
                while (reader.MoveToNextEntry())
                {
                    if (!reader.Entry.IsDirectory)
                    {
                        Assert.Equal(CompressionType.BZip2, reader.Entry.CompressionType);
                        using var entryStream = reader.OpenEntryStream();
                        var file = Path.GetFileName(reader.Entry.Key);
                        var folder =
                            Path.GetDirectoryName(reader.Entry.Key)
                            ?? throw new ArgumentNullException();
                        var destdir = Path.Combine(SCRATCH_FILES_PATH, folder);
                        if (!Directory.Exists(destdir))
                        {
                            Directory.CreateDirectory(destdir);
                        }
                        var destinationFileName = Path.Combine(destdir, file.NotNull());
    
                        using var fs = File.OpenWrite(destinationFileName);
                        entryStream.CopyTo(fs);
                    }
                }
            }
            VerifyFiles();
        }
    
        [Fact]
        public void Tar_LongNamesWithLongNameExtension()
        {
            var filePaths = new List<string>();
    
            using (
                Stream stream = File.OpenRead(
                    Path.Combine(TEST_ARCHIVES_PATH, "Tar.LongPathsWithLongNameExtension.tar")
                )
            )
            using (var reader = TarReader.Open(stream))
            {
                while (reader.MoveToNextEntry())
                {
                    if (!reader.Entry.IsDirectory)
                    {
                        filePaths.Add(reader.Entry.Key.NotNull("Entry Key is null"));
                    }
                }
            }
    
            Assert.Equal(3, filePaths.Count);
            Assert.Contains("a.txt", filePaths);
            Assert.Contains(
                "wp-content/plugins/gravityformsextend/lib/Aws/Symfony/Component/ClassLoader/Tests/Fixtures/Apc/beta/Apc/ApcPrefixCollision/A/B/Bar.php",
                filePaths
            );
            Assert.Contains(
                "wp-content/plugins/gravityformsextend/lib/Aws/Symfony/Component/ClassLoader/Tests/Fixtures/Apc/beta/Apc/ApcPrefixCollision/A/B/Foo.php",
                filePaths
            );
        }
    
        [Fact]
        public void Tar_BZip2_Skip_Entry_Stream()
        {
            using Stream stream = File.OpenRead(Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar.bz2"));
            using var reader = TarReader.Open(stream);
            var names = new List<string>();
            while (reader.MoveToNextEntry())
            {
                if (!reader.Entry.IsDirectory)
                {
                    Assert.Equal(CompressionType.BZip2, reader.Entry.CompressionType);
                    using var entryStream = reader.OpenEntryStream();
                    entryStream.SkipEntry();
                    names.Add(reader.Entry.Key.NotNull());
                }
            }
            Assert.Equal(3, names.Count);
        }
    
        [Fact]
        public void Tar_Containing_Rar_Reader()
        {
            var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.ContainsRar.tar");
            using Stream stream = File.OpenRead(archiveFullPath);
            using var reader = ReaderFactory.Open(stream);
            Assert.True(reader.ArchiveType == ArchiveType.Tar);
        }
    
        [Fact]
        public void Tar_With_TarGz_With_Flushed_EntryStream()
        {
            var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.ContainsTarGz.tar");
            using Stream stream = File.OpenRead(archiveFullPath);
            using var reader = ReaderFactory.Open(stream);
            Assert.True(reader.MoveToNextEntry());
            Assert.Equal("inner.tar.gz", reader.Entry.Key);
    
            using var entryStream = reader.OpenEntryStream();
            using var flushingStream = new FlushOnDisposeStream(entryStream);
    
            // Extract inner.tar.gz
            using var innerReader = ReaderFactory.Open(flushingStream);
            Assert.True(innerReader.MoveToNextEntry());
            Assert.Equal("test", innerReader.Entry.Key);
        }
    
        [Fact]
        public void Tar_Broken_Stream()
        {
            var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "Tar.tar");
            using Stream stream = File.OpenRead(archiveFullPath);
            using var reader = ReaderFactory.Open(stream);
            var memoryStream = new MemoryStream();
    
            Assert.True(reader.MoveToNextEntry());
            Assert.True(reader.MoveToNextEntry());
            reader.WriteEntryTo(memoryStream);
            stream.Close();
            Assert.Throws<IncompleteArchiveException>(() => reader.MoveToNextEntry());
        }
    
        [Fact]
        public void Tar_Corrupted()
        {
            var archiveFullPath = Path.Combine(TEST_ARCHIVES_PATH, "TarCorrupted.tar");
            using Stream stream = File.OpenRead(archiveFullPath);
            using var reader = ReaderFactory.Open(stream);
            var memoryStream = new MemoryStream();
    
            Assert.True(reader.MoveToNextEntry());
            Assert.True(reader.MoveToNextEntry());
            reader.WriteEntryTo(memoryStream);
            stream.Close();
            Assert.Throws<IncompleteArchiveException>(() => reader.MoveToNextEntry());
        }
    
    #if !NETFRAMEWORK
        [Fact]
        public void Tar_GZip_With_Symlink_Entries()
        {
            var isWindows = System.Runtime.InteropServices.RuntimeInformation.IsOSPlatform(
                System.Runtime.InteropServices.OSPlatform.Windows
            );
            using Stream stream = File.OpenRead(
                Path.Combine(TEST_ARCHIVES_PATH, "TarWithSymlink.tar.gz")
            );
            using var reader = TarReader.Open(stream);
            while (reader.MoveToNextEntry())
            {
                if (reader.Entry.IsDirectory)
                {
                    continue;
                }
                reader.WriteEntryToDirectory(
                    SCRATCH_FILES_PATH,
                    new ExtractionOptions
                    {
                        ExtractFullPath = true,
                        Overwrite = true,
                        WriteSymbolicLink = (sourcePath, targetPath) =>
                        {
                            if (!isWindows)
                            {
                                var link = new Mono.Unix.UnixSymbolicLinkInfo(sourcePath);
                                if (File.Exists(sourcePath))
                                {
                                    link.Delete(); // equivalent to ln -s -f
                                }
                                link.CreateSymbolicLinkTo(targetPath);
                            }
                        },
                    }
                );
                if (!isWindows)
                {
                    if (reader.Entry.LinkTarget != null)
                    {
                        var path = Path.Combine(SCRATCH_FILES_PATH, reader.Entry.Key.NotNull());
                        var link = new Mono.Unix.UnixSymbolicLinkInfo(path);
                        if (link.HasContents)
                        {
                            // need to convert the link to an absolute path for comparison
                            var target = reader.Entry.LinkTarget;
                            var realTarget = Path.GetFullPath(
                                Path.Combine($"{Path.GetDirectoryName(path)}", target)
                            );
    
                            Assert.Equal(realTarget, link.GetContents().ToString());
                        }
                        else
                        {
                            Assert.True(false, "Symlink has no target");
                        }
                    }
                }
            }
        }
    #endif*/
}