From b444ebcd72a7da8b8081172d52f2e7b36f0915c0 Mon Sep 17 00:00:00 2001
From: Guillaume Seguin <guillaume@segu.in>
Date: Sat, 25 Feb 2012 22:35:48 +0100
Subject: [PATCH] Handle the exceptions raised when printer is disconnected.

---
 printcore.py | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/printcore.py b/printcore.py
index cadbc0e..fe8f8bf 100755
--- a/printcore.py
+++ b/printcore.py
@@ -15,7 +15,7 @@
 # You should have received a copy of the GNU General Public License
 # along with Printrun.  If not, see <http://www.gnu.org/licenses/>.
 
-from serial import Serial
+from serial import Serial, SerialException
 from threading import Thread
 from select import error as SelectError
 import time, getopt, sys
@@ -100,6 +100,9 @@ class printcore():
                     break
                 else:
                     raise
+            except SerialException, e:
+                print "Can't read from printer (disconnected?)."
+                break
 
             if(len(line)>1):
                 self.log+=[line]
@@ -279,7 +282,10 @@ class printcore():
                     self.sendcb(command)
                 except:
                     pass
-            self.printer.write(str(command+"\n"))
+            try:
+                self.printer.write(str(command+"\n"))
+            except SerialException, e:
+                print "Can't write to printer (disconnected?)."
 
 if __name__ == '__main__':
     baud = 115200