public static T CheckCache <T>(CacheIdentifier i)
{
string cachedir = ConfigurationManager.AppSettings["cache_dir"];
string totalfile = System.IO.Path.Combine(cachedir, i.ToString());
if (!System.IO.File.Exists(totalfile))
{
return(default(T));
}
System.IO.FileStream fs = new System.IO.FileStream(totalfile, System.IO.FileMode.Open, System.IO.FileAccess.Read);
if (typeof(T) == typeof(byte[]))
{
byte[] data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
fs.Close();
return((T)(object)data);
}
else
{
System.Runtime.Serialization.Json.DataContractJsonSerializer ser = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));
byte[] data = new byte[fs.Length];
fs.Read(data, 0, data.Length);
fs.Close();
T ret = (T)ser.ReadObject(new System.IO.MemoryStream(data));
return(ret);
}
fs.Close();
return(default(T));
}
public static bool ExpireCache(CacheIdentifier i)
{
string cachedir = ConfigurationManager.AppSettings["cache_dir"];
string totalfile = System.IO.Path.Combine(cachedir, i.ToString());
try{
System.IO.File.Delete(totalfile);
return(true);
}
catch (Exception e)
{
return(false);
}
return(false);
}
public static CacheFile GetCacheFile(CacheIdentifier i)
{
CacheFile ret = null;
string cachedir = ConfigurationManager.AppSettings["cache_dir"];
string totalfile = System.IO.Path.Combine(cachedir, i.ToString());
if (System.IO.File.Exists(totalfile))
{
System.IO.FileStream fs = new System.IO.FileStream(totalfile, System.IO.FileMode.Open, System.IO.FileAccess.Read);
ret = new CacheFile();
ret.data = new byte[fs.Length];
fs.Read(ret.data, 0, (int)fs.Length);
fs.Close();
ret.age = DateTime.Now - System.IO.File.GetCreationTime(totalfile);
ret.filename = totalfile;
ret.hashcode = i.ToString();
}
return(ret);
}
public static void Cache <T>(ref T obj, CacheIdentifier i)
{
string cachedir = ConfigurationManager.AppSettings["cache_dir"];
string totalfile = System.IO.Path.Combine(cachedir, i.ToString());
if (System.IO.File.Exists(totalfile))
{
System.IO.File.Delete(totalfile);
}
System.IO.FileStream fs = new System.IO.FileStream(totalfile, System.IO.FileMode.Create, System.IO.FileAccess.Write);
if (obj.GetType() == typeof(byte[]))
{
byte[] data = (byte[])(Object)obj;
fs.Write(data, 0, data.Length);
}
else
{
System.Runtime.Serialization.Json.DataContractJsonSerializer ser = new System.Runtime.Serialization.Json.DataContractJsonSerializer(typeof(T));
ser.WriteObject(fs, obj);
}
fs.Close();
}
