plist2txt.py: check the 3 arrays have the same size

If the 3 arrays ifdVendorID, ifdProductID and ifdFriendlyName had
different sizes then the program did not complained.

plist2txt.py

@@ -23,6 +23,7 @@
 # Usage:
 # ./plist2txt.py /usr/lib/pcsc/drivers/ifd-ccid.bundle/Contents/Info.plist
 
+from __future__ import print_function
 
 import plistlib
 import sys
@@ -32,10 +33,21 @@ def convert(filename):
  root = plistlib.readPlist(filename)
 # for key in root:
 # print key
+
+ n_ifdVendorID = len(root['ifdVendorID'])
+ n_ifdProductID = len(root['ifdProductID'])
+ n_ifdFriendlyName = len(root['ifdFriendlyName'])
+ if n_ifdVendorID != n_ifdProductID or n_ifdVendorID != n_ifdFriendlyName:
+ print("Error: wrongs sizes")
+ print("ifdVendorID:", n_ifdVendorID)
+ print("ifdProductID:", n_ifdProductID)
+ print("ifdFriendlyName:", n_ifdFriendlyName)
+ return
+
  zipped = zip(root['ifdVendorID'], root['ifdProductID'],
  root['ifdFriendlyName'])
  for elt in sorted(zipped):
- print ":".join(elt)
+ print(":".join(elt))
 
 if __name__ == "__main__":
  convert(sys.argv[1])