//递归从每个子目录中读取文件信息
private void Load(System.IO.DirectoryInfo diparent)
{
foreach (System.IO.DirectoryInfo di in diparent.GetDirectories())
{
Load(di);
}
foreach (System.IO.FileInfo fi in diparent.GetFiles())
{
FileInfo finew = new FileInfo(fi);
this.Add(finew.ID, finew);
}
}
//递归读出每个Xml节点表示的文件信息
private void Load(XmlNode nodeparent)
{
foreach (XmlNode node in nodeparent.ChildNodes)
{
if (node.Name.Equals("Folder"))
{
Load(node);
}
else if(node.Name.Equals("File"))
{
int id = Convert.ToInt32(node.Attributes["ID"].Value);
string name = node.Attributes["Name"].Value;
DateTime date = Convert.ToDateTime(node.Attributes["Date"].Value);
int length = Convert.ToInt32(node.Attributes["Length"].Value);
string directoryname = string.Empty;
if (nodeparent.Name.Equals("Folder"))
{
directoryname = nodeparent.Attributes["Name"].Value;
}
FileInfo finew = new FileInfo(id, name, directoryname, date, length);
if (node.Attributes["OverWritable"] != null)
{
finew.OverWritable = Convert.ToBoolean(node.Attributes["OverWritable"].Value);
}
this.Add(finew.ID,finew);
}
else if (node.Name.Equals("FileResume"))
{
int id = Convert.ToInt32(node.Attributes["ID"].Value);
DateTime date = Convert.ToDateTime(node.Attributes["Date"].Value);
int length = Convert.ToInt32(node.Attributes["Length"].Value);
int offset = Convert.ToInt32(node.Attributes["Offset"].Value);
SetFiletoResumeInfo(id, date, length, offset);
}
}
}
/// <summary>
/// 设置续传文件的信息和开始位置
/// </summary>
/// <param name="id"></param>
/// <param name="offset"></param>
public void SetFiletoResumeInfo(int id, DateTime dt, int length, int offset)
{
_FileResume = new FileInfo(id, null, null, dt, length);
_FileOffSet = offset;
}
/// <summary>
/// 清空续传信息
/// </summary>
private void ClearFiletoResume()
{
_FileResume = null;
_FileOffSet = 0;
}
//未测试
/// <summary>
/// 通过文件标识号,修改日期,文件长度来比较是否与当前文件是否相同
/// </summary>
/// <param name="fi">待比较的文件实例</param>
/// <returns>是否相同</returns>
public bool Equals(FileInfo fi)
{
return (!OverWritable) || (!fi.OverWritable)
|| ID.Equals(fi.ID) && Math.Abs(((TimeSpan)(Date - fi.Date)).TotalSeconds) < 1.01 && Length.Equals(fi.Length);//时间类型的比较 0.5Ms会有不相等的情况
}