source-checker: usability tweaks

checksum sorter, source checker:
* exit(1) on failure;
* send errors to stderr;
* make executable

checksum sorter:
* read from stdin if no arg;
* accept --inplace option to read and write from the same file;
* check that input file exists as ConfigParser.read() doesn't treat
  missing files as an error.

Signed-off-by: Michael Smith <msmith@cbnco.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/contrib/source-checker/oe-source-checker.py b/contrib/source-checker/oe-source-checker.py
index 0ae356395c..bb14c87289 100644..100755
--- a/contrib/source-checker/oe-source-checker.py
+++ b/contrib/source-checker/oe-source-checker.py
@@ -39,13 +39,14 @@
 import sys
 
 if len(sys.argv) < 3:
+    print >> sys.stderr, "%s: missing argument" % sys.argv[0]
     print """
     OpenEmbedded source checker script require two arguments:
 
     1. location of conf/checksums.ini
     2. path to DL_DIR (without "/" at the end)
     """
-    sys.exit(0)
+    sys.exit(1)
 
 import ConfigParser, os, itertools