c# - 将 zip 条目提取到另一个 Zip 文件

Question

谁能告诉我为什么下面的代码不起作用？我正在为 Zip 流使用 SharpZipLib API，今天从他们的站点下载了最新版本。我试图使用此逻辑将一个 zip 文件的内容合并到另一个 zip 文件中，而不必在磁盘上执行 IO，因为预期的 zip 文件可能包含为 windows 保留的文件名。我已经尝试使用多个不同的源和目标 zip 文件(包含保留名称的文件和不包含保留名称的文件)。代码没有抛出任何异常，如果你在每次写入操作之前检查缓冲区，你可以看到它包含真实数据，但在整个操作完成后目标 zip 文件的大小没有改变，你可以探索它以确认没有新文件(代码应该添加的文件)实际上已添加到目标文件。 :(

    public static void CopyToZip(string inArchive, string outArchive)
    {

        ZipOutputStream outStream = null;
        ZipInputStream inStream = null;
        try
        {
            outStream = new ZipOutputStream(File.OpenWrite(outArchive));
            outStream.IsStreamOwner = false;
            inStream = new ZipInputStream(File.OpenRead(inArchive));
            ZipEntry currentEntry = inStream.GetNextEntry();
            while (currentEntry != null)
            {

                byte[] buffer = new byte[1024];
                ZipEntry newEntry = new ZipEntry(currentEntry.Name);
                newEntry.Size = currentEntry.Size;
                newEntry.DateTime = currentEntry.DateTime;
                outStream.PutNextEntry(newEntry);
                int size = 0;
                while ((size = inStream.Read(buffer, 0, buffer.Length)) > 0)
                {
                    outStream.Write(buffer, 0, size);
                }
                outStream.CloseEntry();

                currentEntry = inStream.GetNextEntry();
            }
            outStream.IsStreamOwner = true;
        }
        catch (Exception e)
        {
            throw e;
        }
        finally
        {
            try { outStream.Close(); }
            catch (Exception ignore) { }
            try { inStream.Close(); }
            catch (Exception ignore) { }
        }      
    }

Answer 1

我最终使用不同的 API 来完成这项工作。 DotNet zip 来自 http://dotnetzip.codeplex.com/ .这是实现:

    public static void CopyToZip(string inArchive, string outArchive, string tempPath)
    {
        ZipFile inZip = null;
        ZipFile outZip = null;

        try
        {
            inZip = new ZipFile(inArchive);
            outZip = new ZipFile(outArchive);
            List<string> tempNames = new List<string>();
            List<string> originalNames = new List<string>();
            int I = 0;
            foreach (ZipEntry entry in inZip)
            {
                if (!entry.IsDirectory)
                {
                    string tempName = Path.Combine(tempPath, "tmp.tmp");
                    string oldName = entry.FileName;
                    byte[] buffer = new byte[4026];
                    Stream inStream = null;
                    FileStream stream = null;
                    try
                    {
                        inStream = entry.OpenReader();
                        stream = new FileStream(tempName, FileMode.Create, FileAccess.ReadWrite);
                        int size = 0;
                        while ((size = inStream.Read(buffer, 0, buffer.Length)) > 0)
                        {
                            stream.Write(buffer, 0, size);
                        }
                        inStream.Close();
                        stream.Flush();
                        stream.Close();
                        inStream = new FileStream(tempName, FileMode.Open, FileAccess.Read);

                        outZip.AddEntry(oldName, inStream);
                        outZip.Save();
                    }
                    catch (Exception exe)
                    {
                        throw exe;
                    }
                    finally
                    {
                        try { inStream.Close(); }
                        catch (Exception ignore) { }
                        try { stream.Close(); }
                        catch (Exception ignore) { }
                    }
                }
            }

        }
        catch (Exception e)
        {
            throw e;
        }
    }