From 406df0cdab322d077151d2a9d449c8b4f799180d Mon Sep 17 00:00:00 2001
From: Joseph Hunkeler <jhunkeler@gmail.com>
Date: Fri, 3 Jul 2015 14:06:07 -0400
Subject: Add LoginCLError and associated failures

---
 logincl/__init__.py | 21 ++++++++++++++++-----
 1 file changed, 16 insertions(+), 5 deletions(-)

diff --git a/logincl/__init__.py b/logincl/__init__.py
index ff7e179..8226c52 100644
--- a/logincl/__init__.py
+++ b/logincl/__init__.py
@@ -2,19 +2,29 @@ import os
 import atexit
 
 
-DEFAULT_CLFILE = os.path.join(os.environ['HOME'], 'login.cl')
+DEFAULT_CLFILE = os.path.join(os.environ['HOME'], 'iraf', 'login.cl')
 
 if 'LOGINCL' in os.environ:
     CLFILE = os.environ['LOGINCL']
 else:
     CLFILE = DEFAULT_CLFILE
 
+class LoginCLError(Exception):
+    pass
 
 class LoginCL(object):
     def __init__(self, filename):
         self.filename = os.path.abspath(filename)
+
+        if not os.path.exists(self.filename):
+            raise LoginCLError('{0} does not exist.'.format(self.filename))
+
+        if not os.path.isfile(self.filename):
+            raise LoginCLError('{0} is not a file.'.format(self.filename))
+
         self.curdir = os.path.abspath(os.curdir)
         self.destination = os.path.join(self.curdir, os.path.basename(self.filename))
+
         if self.exists():
             if not self.rmlink():
                 return
@@ -33,7 +43,8 @@ class LoginCL(object):
         os.remove(self.destination)
         return True
 
-
-lcl = LoginCL(CLFILE)
-atexit.register(lcl.rmlink)
-
+try:
+    lcl = LoginCL(CLFILE)
+    atexit.register(lcl.rmlink)
+except LoginCLError:
+    pass
-- 
cgit