/// <summary>
/// 压缩一个数据集到文件
/// </summary>
/// <param name="dataSet"></param>
/// <param name="destFileName"></param>
/// <param name="cry"></param>
/// <param name="cryKey"></param>
/// <returns></returns>
public I3MsgInfo CompressADataSet(DataSet dataSet, string destFileName, bool cry, string cryKey)
{
#region 初始化临时文件变量
string tmpDir = I3DirectoryUtil.GetAppTmpTmpDir();
string tmpDataSetFile = Path.Combine(tmpDir, "DataSet.tmp");
string tmpRarFile = Path.Combine(tmpDir, I3DateTimeUtil.ConvertDateTimeToLongString(DateTime.Now) + ".tmp");
if ((!I3DirectoryUtil.CreateDirctory(tmpDir).State) || (!I3FileUtil.CheckFileNotExists(tmpDataSetFile)) || (!I3FileUtil.CheckFileNotExists(tmpRarFile)))
{
return(new I3MsgInfo(false, ""));
}
#endregion
try
{
#region 数据集保存到临时文件
try
{
//保存时要写入架构信息，否则字段类型有可能会更改，如Int32更改为String
dataSet.WriteXml(tmpDataSetFile, XmlWriteMode.WriteSchema);
}
catch (Exception ex)
{
return(new I3MsgInfo(false, "数据集保存到临时文件失败！文件名：" + tmpDataSetFile + "错误信息：" + ex.Message));
}
if (!File.Exists(tmpDataSetFile))
{
return(new I3MsgInfo(false, "数据集保存到临时文件失败！文件名：" + tmpDataSetFile));
}
#endregion
#region 数据集临时文件压缩到临时压缩包
I3MsgInfo msg = this.CompressASingleFile(tmpDataSetFile, tmpRarFile);
if (!msg.State)
{
return(msg);
}
if (!File.Exists(tmpRarFile))
{
return(new I3MsgInfo(false, "数据集临时文件压缩失败！文件名：" + tmpDataSetFile));
}
#endregion
#region 临时压缩包加密到目标文件
if (cry)
{
return(I3RijnDaelCry.CryFile(tmpRarFile, destFileName, cryKey));
}
else
{
return(I3FileUtil.MoveFile(tmpRarFile, destFileName, true));
}
#endregion
}
finally
{
#region 除临时文件
I3DirectoryUtil.DeleteDirctory(tmpDir);
#endregion
}
}
public I3MsgInfo UnAllCompressToADir(string sourceRarFileName, string destDir)
{
I3MsgInfo msg = I3DirectoryUtil.CreateDirctory(destDir);
if (!msg.State)
{
return(msg);
}
string cmdLine = " X -Y -C- ";
if (!string.IsNullOrEmpty(passWord))
{
cmdLine = cmdLine + " -p" + I3StringUtil.AppendDoubleQuotes(passWord) + " ";
}
cmdLine = cmdLine + I3StringUtil.AppendDoubleQuotes(sourceRarFileName) + " " + I3StringUtil.AppendDoubleQuotes(destDir);
return(RunCmdLine(cmdLine));
}
protected string getTmpFileName()
{
string tmpDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, "tmp");
//MessageBox.Show(tmpDir);
if (!I3DirectoryUtil.CreateDirctory(tmpDir).State)
{
throw new Exception("临时目录创建失败");
}
try
{
I3DirectoryUtil.CheckAndClearDirctory(tmpDir);
}
catch
{
}
string tmpFileName = Path.Combine(tmpDir, Guid.NewGuid().ToString() + ".xls");
return(tmpFileName);
}
/// <summary>
/// 从一个被压缩的数据集文件中加载数据集
/// </summary>
/// <param name="sourceFileName"></param>
/// <param name="dataSet"></param>
/// <param name="unCry"></param>
/// <param name="unCryKey"></param>
/// <returns></returns>
public I3MsgInfo UnCompressADataSet(string sourceFileName, DataSet dataSet, bool unCry, string unCryKey)
{
#region 初始化临时文件变量
string tmpDir = I3DirectoryUtil.GetAppTmpTmpDir();
string tmpDataSetFile = Path.Combine(tmpDir, "DataSet.tmp");
string tmpRarFile = Path.Combine(tmpDir, I3DateTimeUtil.ConvertDateTimeToLongString(DateTime.Now) + ".tmp");
if ((!I3DirectoryUtil.CreateDirctory(tmpDir).State) || (!I3FileUtil.CheckFileNotExists(tmpDataSetFile)) || (!I3FileUtil.CheckFileNotExists(tmpRarFile)))
{
return(new I3MsgInfo(false, ""));
}
#endregion
I3MsgInfo msg;
try
{
#region 解密到临时压缩文件
if (unCry)
{
msg = I3RijnDaelCry.UnCryFile(sourceFileName, tmpRarFile, unCryKey);
if (!msg.State)
{
return(msg);
}
}
else
{
msg = I3FileUtil.MoveFile(sourceFileName, tmpRarFile, false);
if (!msg.State)
{
return(msg);
}
}
if (!File.Exists(tmpRarFile))
{
return(new I3MsgInfo(false, "文件解密到临时压缩文件失败！文件名：" + tmpRarFile));
}
#endregion
#region 解压缩到临时数据集文件
msg = this.UnCompressASingleFile(tmpRarFile, "DataSet.tmp", tmpDataSetFile);
if (!msg.State)
{
return(msg);
}
if (!File.Exists(tmpDataSetFile))
{
return(new I3MsgInfo(false, "临时压缩文件解压到临时数据集文件失败！文件名：" + tmpDataSetFile));
}
#endregion
#region 从临时数据集文件加载
try
{
dataSet.ReadXml(tmpDataSetFile);
return(I3MsgInfo.Default);
}
catch (Exception ex)
{
return(new I3MsgInfo(false, "从临时数据集文件加载数据集失败！错误信息：" + ex.Message, ex));
}
#endregion
}
finally
{
#region 除临时文件
I3DirectoryUtil.DeleteDirctory(tmpDir);
#endregion
}
}