From 06c23d80e8acae27825e458c298e52f736015f90 Mon Sep 17 00:00:00 2001
From: Maodouzi <maodouzi@gmail.com>
Date: Sun, 14 Sep 2014 10:53:39 +0800
Subject: [PATCH] Add a improvement in Tail.follow

Callback will impact to all the new-added lines once time.sleep ended,
rather than line by line according to the timer.
---
 tail.py | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/tail.py b/tail.py
index c9e4fc2..2821681 100644
--- a/tail.py
+++ b/tail.py
@@ -51,11 +51,12 @@ def follow(self, s=1):
             file_.seek(0,2)
             while True:
                 curr_position = file_.tell()
-                line = file_.readline()
-                if not line:
-                    file_.seek(curr_position)
-                else:
-                    self.callback(line)
+                file_.seek(0,2)
+                end_position = file_.tell()
+                file_.seek(curr_position)
+                if curr_position != end_position:
+                    for line in file_:
+                        self.callback(line)
                 time.sleep(s)
 
     def register_callback(self, func):