recipetool: create: avoid extra blank lines in output recipe

If we output extra blank lines (because of some automated editing) then
it makes the output recipe look a bit untidy. You could argue that we
should simply have the editing code not do that, but sometimes we don't
have enough context there for that to be practical. It's simple enough
to just filter out the extra blank lines when writing the file, so just
do it that way.

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>

1 files changed, 7 insertions, 1 deletions

diff --git a/scripts/lib/recipetool/create.py b/scripts/lib/recipetool/create.py
index 6ed4ad0ff7..cd86747821 100644
--- a/scripts/lib/recipetool/create.py
+++ b/scripts/lib/recipetool/create.py
@@ -714,7 +714,13 @@ def create_recipe(args):
         sys.stdout.write('\n'.join(outlines) + '\n')
     else:
         with open(outfile, 'w') as f:
-            f.write('\n'.join(outlines) + '\n')
+            lastline = None
+            for line in outlines:
+                if not lastline and not line:
+                    # Skip extra blank lines
+                    continue
+                f.write('%s\n' % line)
+                lastline = line
         logger.info('Recipe %s has been created; further editing may be required to make it fully functional' % outfile)
 
     if tempsrc: