add a simple logger

esgd.py

@@ -1,9 +1,11 @@
 import socketserver
 import subprocess
 import os
+import time
 
 host = "localhost"
 port = 77
+log = Logger()
 
 class GopherError(BaseException): pass
 class RequestError(GopherError): pass
@@ -52,6 +54,31 @@ class GopherLine:
             self.port
         )
 
+class Logger:
+    def __init__(self, file=None):
+        if file != None: self.fd = open(file, "a+")
+        else: self.fd = False
+    def time(self)
+        return int(time.time())
+    def write(self, msg):
+        if self.fd: self.fd.write("{}\n")
+    def log(self, msg):
+        ct = self.time()
+        self.write("[{}] {}".format(str(ct), msg))
+        print("[{}] {}".format(str(ct), msg))
+    def warn(self, msg):
+        ct = self.time()
+        self.write("! [{}] {}".format(str(ct), msg))
+        print("! [{}] {}".format(str(ct), msg))
+    def error(self, msg):
+        ct = self.time()
+        self.write("!! [{}] {}".format(str(ct), msg))
+        print("!! [{}] {}".format(str(ct), msg))
+        self.close()
+        raise SystemExit
+    def close(self):
+        self.fd.close()
+
 class GopherServerLogic:
     def recieveRequest(self):
         data = b""