/// <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
}
}
/// <summary>
/// 解压单个文件 到 指定文件
/// 注意：单个文件的文件名，要指定在rar文件中的相对路径
/// </summary>
/// <param name="sourceRarFileName"></param>
/// <param name="sourceFileName"></param>
/// <param name="destFileName"></param>
/// <returns></returns>
public I3MsgInfo UnCompressASingleFile(string sourceRarFileName, string sourceFileName, string destFileName)
{
#region 先删除目的文件
if (!I3FileUtil.CheckFileNotExists(destFileName))
{
return(new I3MsgInfo(false, ""));
}
#endregion
#region 获取临时目录与临时文件名
string tmpDir = I3DirectoryUtil.GetAppTmpTmpDir();
string tmpFileName = Path.Combine(tmpDir, Path.GetFileName(sourceFileName));
#endregion
I3MsgInfo msg = I3DirectoryUtil.CreateDirectoryByFileName(tmpFileName);
#region 创建临时目录
if (!msg.State)
{
return(msg);
}
#endregion
try
{
#region 生成命令行参数
string cmdLine;
cmdLine = " E -Y ";
if (!string.IsNullOrEmpty(passWord))
{
cmdLine = cmdLine + " -p" + I3StringUtil.AppendDoubleQuotes(passWord) + " ";
}
cmdLine = cmdLine + I3StringUtil.AppendDoubleQuotes(sourceRarFileName) + " "
+ I3StringUtil.AppendDoubleQuotes(sourceFileName) + " "
+ I3StringUtil.AppendDoubleQuotes(tmpDir);
#endregion
//执行
msg = RunCmdLine(cmdLine);
if (!msg.State)
{
return(msg);
}
//检查临时文件
if (!File.Exists(tmpFileName))
{
return(new I3MsgInfo(false, "未知错误，临时文件未生成！文件名：" + tmpFileName));
}
//移动
return(I3FileUtil.MoveFile(tmpFileName, destFileName, true));
}
finally
{
I3DirectoryUtil.DeleteDirctory(tmpDir);
}
}
/// <summary>
/// 根据fileInfoList的设置，生成新的压缩包文件
///
/// 错误处理：IEFS_Error.LastErrorMessage
///
/// </summary>
/// <returns></returns>
public I3MsgInfo Flush()
{
#region 定义变量
string message;
ZipOutputStream outputStream = null;
int addFileCount = GetAddFileCount() + GetNormalFileCount();
long totalAddFileSize = GetTotalAddFileSize() + GetTotalNormalFileSize(); //所有需要压缩的文件的字节数
long passFileSize = 0; //已经压缩的文件的字节数
long totalPosition = 0; //总共压缩到的字节数
#endregion
#region 检查临时文件与临时目录
string tmpFile = fileName + ".tmpsharpzip";
if (!I3FileUtil.CheckFileNotExists(tmpFile))
{
return(new I3MsgInfo(false, ""));
}
string tmpDir = Path.Combine(AppDomain.CurrentDomain.BaseDirectory, I3DateTimeUtil.ConvertDateTimeToLongString(DateTime.Now));
I3MsgInfo msg = I3DirectoryUtil.CheckAndClearDirctory(tmpDir);
if (!msg.State)
{
return(msg);
}
#endregion
try
{
#region 解压所有不需要替换或者删除的文件到临时目录
msg = UnCompressAllFile(tmpDir, true);
if (!msg.State)
{
return(msg);
}
#endregion
#region 开始压缩状态为normal、New、Change三种状态的文件到临时文件中
try
{
#region 压缩
outputStream = new ZipOutputStream(File.Create(tmpFile));
outputStream.SetLevel(zipLevel);
if (!string.IsNullOrEmpty(passWord))
{
outputStream.Password = passWord;
}
int fileindex = 0;
foreach (I3SharpZipFileInfo info in fileInfoList)
{
#region 判断文件是否要参与压缩
if (info.Mode == I3SZFileInfoMode.szimDelete)
{
continue;
}
#endregion
#region 发送文件个数进度信息
message = "正在压缩文件\"" + info.FileName + "\"";
fileindex++;
OnMutiFileProcessReport(addFileCount, fileindex, message);
#endregion
#region 写入ZipEntry
//outputStream.PutNextEntry(GetEntry(info.FileName, info.FullName));
//自己在ZipEntry中写入CRC信息，读取时会报Eof of Header的错误
//在网上查找资料后发现，新版SharpZip.dll已经更改，不再需要自己写入CRC等信息
outputStream.PutNextEntry(new ZipEntry(info.FileName));
info.Mode = I3SZFileInfoMode.szimNormal;
if (info.FileSize == 0)
{
continue;
}
#endregion
FileStream sourceFileStream = null;
try
{
#region 将文件写入压缩流
sourceFileStream = File.OpenRead(info.FullName);
sourceFileStream.Position = 0;
//IEFS_Stream.WriteStreamToStream(null, sourceFileStream, outputStream, blockSize, null);
byte[] data = new byte[blockSize];
long longsize = 0;
while (true)
{
int size = sourceFileStream.Read(data, 0, data.Length);
if (size > 0)
{
outputStream.Write(data, 0, size);
longsize += size;
OnSingleFileProcessReport(info.FileSize, longsize, message);
totalPosition = passFileSize + longsize;
OnTotalBytesProcessReport(totalAddFileSize, totalPosition, message);
}
else
{
break;
}
}
passFileSize += longsize;
#endregion
}
finally
{
#region 释放单个文件的文件流
if (sourceFileStream != null)
{
sourceFileStream.Close();
}
#endregion
}
}
#endregion
}
#region 错误处理
catch (Exception ex)
{
return(new I3MsgInfo(false, ex.Message, ex));
}
#endregion
#region 释放变量 删除临时目录
finally
{
if (outputStream != null)
{
outputStream.Finish();
outputStream.Close();
}
I3DirectoryUtil.DeleteDirctory(tmpDir);
}
#endregion
#endregion
#region 替换原始文件
if (!I3FileUtil.CheckFileNotExists(fileName))
{
return(new I3MsgInfo(false, ""));
}
return(I3FileUtil.MoveFile(tmpFile, fileName, true));
#endregion
}
finally
{
I3DirectoryUtil.DeleteDirctory(tmpDir);
I3FileUtil.CheckFileNotExists(tmpFile);
}
}
/// <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
}
}