Scripts: Add ninjawrapper.py

Add a small python program to wrap ninja and split its output nicely
into stdout and stderr.

Change-Id: Ib2fae405c170ea15910de20d5f45aaab75aa89cb
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

scripts/ninjawrapper.py

@@ -0,0 +1,31 @@
+#!/usr/bin/python
+
+'''A simple wrapper around ninja that enables Qt Creator to parse compile errors
+
+   This wrapper splits up ninja output in such a way that Qt Creator will be able
+   to extract compile errors from the output of this script.
+
+   Make sure that ninja is found in PATH and then override the make build step in
+   Qt Creator with this script to use it.
+'''
+
+import os, subprocess, sys
+
+def main():
+    stdout = os.fdopen(sys.stdout.fileno(), 'wb')
+    stderr = os.fdopen(sys.stderr.fileno(), 'wb')
+
+    proc = subprocess.Popen(['ninja'] + sys.argv[1:], stdout=subprocess.PIPE, bufsize=256)
+
+    for line in iter(proc.stdout.readline, b''):
+        if (line.startswith(b'[') or line.startswith(b'ninja: no work to do')) :
+            stdout.write(line)
+            stdout.flush()
+        else:
+            stderr.write(line)
+            stderr.flush()
+
+    return proc.returncode
+
+if __name__ == '__main__':
+    sys.exit(main())