[analyzer][scan-build-py] Non-existing directory for scan-build output.

[ayartsev]

Summary

Attached patch makes scan-build successfully accept non-existing output directories provided via "-o" option. The directory is created in this case. This behavior is conforming to the old perl scan-build implementation. Please review.

[ayartsev]

Ping.

[rizsotto.mailinglist]

thanks Anton, LGTM!

[rizsotto.mailinglist]

the semicolon at the end of line 39 is an issue for PEP8. please remove it.

[ayartsev]

In D17091#358022, @rizsotto.mailinglist wrote:

the semicolon at the end of line 39 is an issue for PEP8. please remove it.

Done.

Committed as r261480, thanks for the review.

tools/scan-build-py/libscanbuild/report.py

 @contextlib.contextmanager
 def report_directory(hint, keep):
     """ Responsible for the report directory.
 
     hint -- could specify the parent directory of the output directory.
     keep -- a boolean value to keep or delete the empty report directory. """
 
     stamp = time.strftime('scan-build-%Y-%m-%d-%H%M%S-', time.localtime())
-    name = tempfile.mkdtemp(prefix=stamp, dir=hint)
+
+    parentdir = os.path.abspath(hint);
+    if not os.path.exists(parentdir):
+        os.makedirs(parentdir)
+
+    name = tempfile.mkdtemp(prefix=stamp, dir=parentdir)
 
     logging.info('Report directory created: %s', name)
 
     try:
         yield name
     finally:
         if os.listdir(name):
             msg = "Run 'scan-view %s' to examine bug reports."