[OE-core] [PATCHv3 4/7] recipetool: parse global args early

[Christopher Larson]

From: Christopher Larson <chris_larson at mentor.com>

This separates the argument parsing into two steps, which lets us apply global
settings like enabling debugging before the plugins load, so we can see the
paths where plugins are being loaded.

Signed-off-by: Christopher Larson <chris_larson at mentor.com>
---
 scripts/recipetool | 24 ++++++++++++++++--------
 1 file changed, 16 insertions(+), 8 deletions(-)

diff --git a/scripts/recipetool b/scripts/recipetool
index 37c2dd3..87fb35e 100755
--- a/scripts/recipetool
+++ b/scripts/recipetool
@@ -46,12 +46,25 @@ def main():
         sys.exit(1)
 
     parser = argparse.ArgumentParser(description="OpenEmbedded recipe tool",
+                                     add_help=False,
                                      epilog="Use %(prog)s <subcommand> --help to get help on a specific command")
     parser.add_argument('-d', '--debug', help='Enable debug output', action='store_true')
     parser.add_argument('-q', '--quiet', help='Print only errors', action='store_true')
     parser.add_argument('--color', choices=['auto', 'always', 'never'], default='auto', help='Colorize output (where %(metavar)s is %(choices)s)', metavar='COLOR')
+
+    global_args, unparsed_args = parser.parse_known_args()
+
+    # Help is added here rather than via add_help=True, as we don't want it to
+    # be handled by parse_known_args()
+    parser.add_argument('-h', '--help', action='help', default=argparse.SUPPRESS,
+                        help='show this help message and exit')
     subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')
 
+    if global_args.debug:
+        logger.setLevel(logging.DEBUG)
+    elif global_args.quiet:
+        logger.setLevel(logging.ERROR)
+
     import scriptpath
     bitbakepath = scriptpath.add_bitbake_lib_path()
     if not bitbakepath:
@@ -59,6 +72,8 @@ def main():
         sys.exit(1)
     logger.debug('Found bitbake path: %s' % bitbakepath)
 
+    scriptutils.logger_setup_color(logger, global_args.color)
+
     tinfoil = tinfoil_init(False)
     for path in ([scripts_path] +
                  tinfoil.config_data.getVar('BBPATH', True).split(':')):
@@ -77,14 +92,7 @@ def main():
         logger.error("No commands registered - missing plugins?")
         sys.exit(1)
 
-    args = parser.parse_args()
-
-    if args.debug:
-        logger.setLevel(logging.DEBUG)
-    elif args.quiet:
-        logger.setLevel(logging.ERROR)
-
-    scriptutils.logger_setup_color(logger, args.color)
+    args = parser.parse_args(unparsed_args, namespace=global_args)
 
     try:
         if getattr(args, 'parserecipes', False):
-- 
2.2.1