public Updater()
{
string localXmlPath = Path.Combine(Application.StartupPath, DataModel.XmlFileName);
if (!File.Exists(localXmlPath))
{
throw new FileNotFoundException(localXmlPath);
}
_localXmlFile = new UpdateXmlFile(localXmlPath);
}
/// <summary>
///
/// </summary>
/// <param name="tempXmlName"></param>
/// <param name="serverXmlUrl"></param>
/// <returns></returns>
private UpdateXmlFile GetServerXmlFile(string tempXmlName, string serverXmlUrl)
{
if (File.Exists(tempXmlName))
{
File.Delete(tempXmlName);
}
WebFile.DownLoadFile(tempXmlName, serverXmlUrl);
UpdateXmlFile serverXmlFile = new UpdateXmlFile(tempXmlName);
return(serverXmlFile);
}
/// <summary>
/// 检查更新，并返回可以更新的文件数据
/// </summary>
/// <returns>List<UpdateFile></returns>
internal IEnumerable <UpdateFileInfo> CheckUpdateFile()
{
string tempXmlName = Path.Combine(TempDirectory, DataModel.XmlFileName);
CreateTempDirectory(TempDirectory);//创建临时目录
UpdateXmlFile serverXmlFile = GetUpdateXmlFile(tempXmlName);
if (serverXmlFile == null || _localXmlFile.EntryPoint != serverXmlFile.EntryPoint || _localXmlFile.ApplicationId != serverXmlFile.ApplicationId)
{
return(new UpdateFileInfo[] { });
}
IEnumerable <UpdateFileInfo> newFile = serverXmlFile.FileInfos.Join(_localXmlFile.FileInfos, server => server.Name, local => local.Name, (server, local) => GetUpdateFileInfo(server, local)).Where(p => p != null);
IEnumerable <UpdateFileInfo> addFile = serverXmlFile.FileInfos.Except(_localXmlFile.FileInfos, UpdateXmlFile.ComparerFileInfo.Comparer).Select(p => new UpdateFileInfo {
CurrentVersion = "无", UpdateVersion = p.Version, FileName = p.Name
});
return(newFile.Union(addFile));
}
/// <summary>
/// 从服务器上下载更新文件xml
/// </summary>
/// <param name="tempXmlName">从服务器上下载下来的本地临时更新文件全名</param>
/// <returns></returns>
UpdateXmlFile GetUpdateXmlFile(string tempXmlName)
{
UpdateXmlFile serverXmlFile = null;
if (UpdateUrlList.Count == 0)
{
return(serverXmlFile);
}
DateTime beginDateTime = DateTime.Now;//开始下载时间
int i = 0;
foreach (var url in UpdateUrlList)
{
Task.Factory.StartNew(() =>
{
string xmlUpdateUrl = string.Format("{0}/{1}", url.TrimEnd('/'), DataModel.XmlFileName);
string tempInTempXmlFileName = Path.Combine(Path.GetDirectoryName(tempXmlName), string.Format("{0}{1}{2}", Path.GetFileNameWithoutExtension(tempXmlName), i, Path.GetExtension(tempXmlName)));
UpdateXmlFile tempVar = GetServerXmlFile(tempInTempXmlFileName, xmlUpdateUrl);//服务器上下下来的xml
lock (LockObj)
{
if (string.IsNullOrWhiteSpace(ServerUrl))
{
ServerUrl = url;
serverXmlFile = tempVar;
TempXmlFileName = tempInTempXmlFileName;
}
}
});
++i;
}
do
{
Thread.Sleep(64);
} while (string.IsNullOrWhiteSpace(ServerUrl) && DateTime.Now.Subtract(beginDateTime).TotalMilliseconds < DownDuration);
return(serverXmlFile);
}