wrap-mode: Make the error output more useful
Now it errors out while displaying the possible options
See: https://bugs.python.org/issue25061 for native support
diff --git a/mesonbuild/mesonmain.py b/mesonbuild/mesonmain.py
index ab14b15..ec2bc58 100644
--- a/mesonbuild/mesonmain.py
+++ b/mesonbuild/mesonmain.py
@@ -63,6 +63,14 @@
add_builtin_argument('stdsplit', action='store_false')
add_builtin_argument('errorlogs', action='store_false')
+def wrapmodetype(string):
+ try:
+ return getattr(WrapMode, string)
+ except AttributeError:
+ msg = ', '.join([t.name.lower() for t in WrapMode])
+ msg = 'invalid argument {!r}, use one of {}'.format(string, msg)
+ raise argparse.ArgumentTypeError(msg)
+
parser.add_argument('--cross-file', default=None,
help='File describing cross compilation environment.')
parser.add_argument('-D', action='append', dest='projectoptions', default=[], metavar="option",
@@ -71,7 +79,7 @@
version=coredata.version)
# See the mesonlib.WrapMode enum for documentation
parser.add_argument('--wrap-mode', default=WrapMode.default,
- type=lambda t: getattr(WrapMode, t), choices=WrapMode,
+ type=wrapmodetype, choices=WrapMode,
help='Special wrap mode to use')
parser.add_argument('directories', nargs='*')
