C＃：只提取一个压缩文件（没有文件夹） [英] C#: Extract a zipped file only (without the folder)

问题描述

随着SharpZip lib中，我可以很容易地提取从ZIP档案文件：

With the SharpZip lib I can easily extract a file from a zip archive:

FastZip fz = new FastZip();
string path = "C:/bla.zip";
fz.ExtractZip(bla,"C:/Unzips/",".*");

然而，这会将未压缩的文件夹中的输出目录。
假设有内bla.zip我想foo​​.txt的文件。有一个简单的方法，只是提取，并将其放置在输出目录（不带文件夹）？

However this puts the uncompressed folder in the output directory. Suppose there is a foo.txt file within bla.zip which I want. Is there an easy way to just extract that and place it in the output directory (without the folder)?

推荐答案

的 FastZip 似乎并没有提供一种方法来改变文件夹，但的操作支持此的手动方式。

The FastZip does not seem to provide a way to change folders, but the "manual" way of doing supports this.

如果你看看他们的例子：

If you take a look at their example:

public void ExtractZipFile(string archiveFilenameIn, string outFolder) {
    ZipFile zf = null;
    try {
        FileStream fs = File.OpenRead(archiveFilenameIn);
        zf = new ZipFile(fs);

        foreach (ZipEntry zipEntry in zf) {
            if (!zipEntry.IsFile) continue; // Ignore directories

            String entryFileName = zipEntry.Name;
            // to remove the folder from the entry:
            // entryFileName = Path.GetFileName(entryFileName);

            byte[] buffer = new byte[4096];     // 4K is optimum
            Stream zipStream = zf.GetInputStream(zipEntry);

            // Manipulate the output filename here as desired.
            String fullZipToPath = Path.Combine(outFolder, entryFileName);
            string directoryName = Path.GetDirectoryName(fullZipToPath);
            if (directoryName.Length > 0)
                Directory.CreateDirectory(directoryName);

            using (FileStream streamWriter = File.Create(fullZipToPath)) {
                StreamUtils.Copy(zipStream, streamWriter, buffer);
            }
        }
    } finally {
        if (zf != null) {
            zf.IsStreamOwner = true;stream
            zf.Close();
        }
    }
}

由于他们注意，而不是写作：

As they note, instead of writing:

String entryFileName = zipEntry.Name;

你可以写：

you can write:

String entryFileName = Path.GetFileName(entryFileName)

要删除的文件夹。

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