Be slightly nicer when option parsing fails

[curses-crossword.git] / curses-crossword.py

diff --git a/curses-crossword.py b/curses-crossword.py
index 06d944ea3d3dbd13484792d45394b23e48a32729..19ee754ef125f87a3bcf9692701ce1fd6dbd1c2e 100644 (file)
--- a/curses-crossword.py
+++ b/curses-crossword.py
@@ -4,6 +4,9 @@ import curses
 import curses.ascii
 import locale
 import codecs
+import getopt
+import os
+import sys
 
 locale.setlocale(locale.LC_ALL, '')
 code = locale.getpreferredencoding()
@@ -27,7 +30,30 @@ except:
     for number in range(0,10):
         superscript_numbers[str(number)] = str(number)
 
-crossworddata = codecs.open("crossword.output", "r", "utf-8").read()
+filename = None
+
+try:
+    (options, args) = getopt.getopt(sys.argv[1:], "f:", "file=")
+except getopt.GetoptError, err:
+    print str(err)
+    sys.exit(2)
+
+for option in options:
+    if option[0] == "-f" or option[0] == "--file":
+        filename = option[1]
+
+if not filename and len(args) > 0:
+    filename = args[0]
+
+if not filename:
+    sys.stderr.write("No crossword file specified, exiting.\n")
+    sys.exit(0)
+
+if os.path.exists(filename) and os.path.isfile(filename):
+    crossworddata = codecs.open(filename, "r", "utf-8").read()
+else:
+    sys.stderr.write("Couldn't open file %s\n" %(filename))
+    sys.exit(0)
 
 def parsecrossword(crossworddata):
     ingrid = False