/// <summary>
/// 合并文件的方法
/// </summary>
private void StartMerge()
{
//清空ListView
lvwFileInfo.Items.Clear();
//清空进度条
prgSchedule.Value = 0;
//反序列化头文件对象
FileStream fs = new FileStream(txtHeadFile.Text, FileMode.Open);
BinaryFormatter bf = new BinaryFormatter();
HeadFile headFile = bf.Deserialize(fs) as HeadFile;
prgSchedule.Maximum = headFile.GetFileInfo().Length;
//获得所有文件片段的路径信息
Dictionary <String, String> dictionary = new Dictionary <String, String>();
String[] urls = Directory.GetFiles(txtHeadFile.Text.Substring(0, txtHeadFile.Text.LastIndexOf('\\') + 1), "*.binary");
foreach (Info fileInfo in headFile.GetFileInfo())
{
foreach (String url in urls)
{
if (fileInfo.FileName.Equals(url.Substring(url.LastIndexOf('\\') + 1)))
{
//建立文件名和路径的映射
dictionary.Add(fileInfo.FileName, url);
break;
}
}
}
//校检文件完整性
if (CheckFile(headFile, dictionary))
{
AddInfo("文件校检成功，开始合并文件 - - - - - >");
//创建文件写入流
FileStream fileStream = new FileStream(txtFileURL.Text + "\\" + headFile.Format, FileMode.OpenOrCreate, FileAccess.ReadWrite);
//创建二进制写入流
BinaryWriter binaryWriter = new BinaryWriter(fileStream);
foreach (Info info in headFile.GetFileInfo())
{
String url = dictionary[info.FileName];
FileStream fragmentFile = new FileStream(url, FileMode.Open, FileAccess.Read);
//创建二进制读取流
BinaryReader binaryReader = new BinaryReader(fragmentFile);
for (int rate = 0; rate < fragmentFile.Length;)
{
byte[] bytes = FillCache(binaryReader);
rate += bytes.Length;
binaryWriter.Write(bytes);
}
AddInfo("已合并文件：" + url);
prgSchedule.Value++;
}
AddInfo("文件合并完毕 - - - - - - >");
}
else
{
MessageBox.Show("文件校检失败：\n1.请检查-文件片段是否完整且都在同一文件夹下。\n2.检查-是否对文件片段有过重命名。", "错误提示", MessageBoxButtons.OK, MessageBoxIcon.Error);
}
}
/// <summary>
/// 文件完整性校检
/// </summary>
/// <param name="headFile">头文件对象</param>
/// <param name="hashtable">文件路径映射集合</param>
/// <returns>{true : 校检成功 , false : 校检失败}</returns>
private bool CheckFile(HeadFile headFile, Dictionary <String, String> dictionary)
{
bool check = true;
foreach (Info fileInfo in headFile.GetFileInfo())
{
String url = dictionary[fileInfo.FileName];
if (fileInfo.FileSize == new FileInfo(url).Length)
{
AddInfo("校检 " + url + " 成功");
}
else
{
AddInfo("校检 " + url + " 失败,大小不匹配");
check = false;
return(check);
}
}
return(check);
}