Add exception handling

bin/deltalogcat.py

@@ -113,15 +113,22 @@ def tail_file(log_file):
     fin = subprocess.Popen(['tail', '-F', log_file], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
     poll = select.poll()
     poll.register(fin.stdout)
-    
-    while True:
-        start_time = time.perf_counter()
 
-        if poll.poll(1):
-            line = fin.stdout.readline().decode('utf-8')
-            parse(line)
+    try:
+        while True:
+            start_time = time.perf_counter()
+
+            if poll.poll(1):
+                line = fin.stdout.readline().decode('utf-8')
+
+                parse(line)
+
+            sleep(start_time)
+
+    except KeyboardInterrupt:
+        sys.stdout.flush()
+        pass
 
-        sleep(start_time)
 
 
 def read_file(log_file):
@@ -129,19 +136,29 @@ def read_file(log_file):
     with open(log_file, 'r') as fin:
         while True:
             line = fin.readline()
+
             if not line:
                 break
+
             parse(line)
 
 
 def read_stdin():
     """Read from stdin"""
     fin = sys.stdin
-    while True:
-        line = fin.readline()
-        if not line:
-            break
-        parse(line)
+
+    try:
+        while True:
+            line = fin.readline()
+
+            if not line:
+                break
+
+            parse(line)
+
+    except KeyboardInterrupt:
+        sys.stdout.flush()
+        pass
 
 
 def main():