/// <summary>
/// 获取插件包的信息
/// </summary>
/// <param name="fileName"></param>
/// <returns></returns>
public static IEnumerable <PluginPackAttribute> GetPluginPackInfo(string fileName)
{
var tempDir = String.Concat(EnvUtil.GetBaseDirectory() + "/", PluginConfig.PLUGIN_TMP_DIRECTORY, "tmp/");
if (Directory.Exists(tempDir))
{
Directory.Delete(tempDir, true);
}
Directory.CreateDirectory(tempDir).Create();
var dir = new DirectoryInfo(tempDir);
ZipUtility.DecompressFile(tempDir, fileName, false);
Assembly ass;
string[] multExt = PluginConfig.GetFilePartterns();
foreach (String ext in multExt)
{
var files = dir.GetFiles(ext);
foreach (FileInfo f in files)
{
ass = Assembly.Load(File.ReadAllBytes(f.FullName));
var attbs = ass.GetCustomAttributes(typeof(PluginPackAttribute), false);
foreach (object attb in attbs)
{
if (attb is PluginPackAttribute)
{
yield return((PluginPackAttribute)attb);
}
}
}
}
}
/// <summary>
/// 安装/升级插件
/// </summary>
/// <param name="url"></param>
/// <param name="handler"></param>
/// <returns></returns>
public static bool InstallPlugin(string url, PluginHandler <PluginPackAttribute> handler)
{
var installResult = false;
string appDirectory = EnvUtil.GetBaseDirectory();
var pluginPath = String.Concat(
appDirectory,
PluginConfig.PLUGIN_DIRECTORY);
var tempDir = String.Concat(appDirectory, PluginConfig.PLUGIN_TMP_DIRECTORY, "plugin/");
var fileName = tempDir + "dl_pack_" + String.Empty.RandomLetters(16) + ".zip";
if (Directory.Exists(tempDir))
{
Directory.Delete(tempDir, true);
}
Directory.CreateDirectory(tempDir).Create();
var dir = new DirectoryInfo(tempDir);
var data = HttpClient.DownloadFile(url, null);
using (var fs = new FileStream(fileName, FileMode.Create, FileAccess.Write))
{
fs.Write(data, 0, data.Length);
fs.Flush();
fs.Dispose();
}
IList <PluginPackAttribute> pluginAttrs = new List <PluginPackAttribute>(GetPluginPackInfo(fileName));
if (pluginAttrs.Count != 0)
{
ZipUtility.DecompressFile(pluginPath, fileName, false);
string[] multExt = PluginConfig.GetFilePartterns();
foreach (String ext in multExt)
{
foreach (FileInfo file in dir.GetFiles(ext))
{
File.Delete(pluginPath + file.Name);
file.MoveTo(pluginPath + file.Name);
}
}
if (handler != null)
{
var result = false;
foreach (PluginPackAttribute attr in pluginAttrs)
{
handler(attr, ref result);
}
}
installResult = true;
}
Directory.Delete(tempDir, true);
return(installResult);
}