如何实现C#调用动态unlha32.dll解压Lha后缀的打包文件
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复制代码 代码如下:
public class LhaUtity
{
///取得DLL的版本
[DllImport("unlha32")]
private static extern UInt16 UnlhaGetVersion();
///
/// '取得DLL的执行情况
///
///
[DllImport("unlha32")]
private static extern Boolean UnlhaGetRunning();
///
/// '文件检查
///
///
///
///
[DllImport("unlha32")]
private static extern Boolean UnlhaCheckArchive(String szFileName, Int32 iMode);
///
/// 文件解压缩
///
///
///
///
///
///
[DllImport("unlha32")]
private static extern int Unlha(int hwnd, string szCmdLine, string szOutput, int dwSize);
///
/// 需要解压的文件
///
/// 解压文件路径
/// 解压到路径
/// 是否删除
public static bool UnCompress(string archiveFile, string extractDir,bool isDeleteFile)
{
string extractFullPath = string.Empty;
string startPath = AppDomain.CurrentDomain.BaseDirectory;
if (!System.IO.File.Exists(archiveFile))
{
//判断需要解压的文件存不存
throw new Exception(string.Format("需要解压的{0}不存在", archiveFile));
}
try
{
UInt16 ver = LhaUtity.UnlhaGetVersion();
}
catch (Exception ex)
{
throw new Exception("没找到Unlha32.dll文件");
}
if (UnlhaGetRunning())
{
throw new Exception("DLL正在执行");
}
if (!UnlhaCheckArchive(archiveFile, 0))
{
throw new Exception("文件不能被解压缩");
}
//解压的路径
if (string.IsNullOrEmpty(extractDir))
{
extractFullPath =string.Format(@"{0}{1}\", startPath,archiveFile.Substring(archiveFile.LastIndexOf("\\")+1,archiveFile.IndexOf(".lha")-1-archiveFile.LastIndexOf("\\")));
}
else
{
extractFullPath = extractDir;
}
if (!System.IO.Directory.Exists(extractFullPath))
{
System.IO.Directory.CreateDirectory(extractFullPath);
}
int ret = Unlha(0, string.Format("x \"{0}\" \"{1}\"", archiveFile, extractFullPath), null, 0);
if (ret != 0)
{
if (ret == 32800)
{
throw new Exception("文件解压缩取消");
}
else
{
throw new Exception("文件解压缩异常结束");
}
}
else
{
if (isDeleteFile)
{
System.IO.File.Delete(archiveFile);
}
return true;
}
}
}
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