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scripts: print usage in argparse-using scripts when a command-line error occurs

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For scripts that use Python's standard argparse module to parse
command-line arguments, create a subclass which will show the usage
the usage information when a command-line parsing error occurs. The most
common case would be when the script is run with no arguments; at least
then the user immediately gets to see what arguments they might need to
pass instead of just an error message.

(From OE-Core rev: d62fe7c9bc2df6a4464440a3cae0539074bf99aa)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
This commit is contained in:
Paul Eggleton
2015-12-22 17:02:54 +13:00
committed by Richard Purdie
parent 548d4332e8
commit 8e0a84c901
10 changed files with 38 additions and 15 deletions
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5
scripts/oe-pkgdata-util
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@@ -33,6 +33,7 @@ scripts_path = os.path.dirname(os.path.realpath(__file__))
lib_path = scripts_path + '/lib'
sys.path = sys.path + [lib_path]
import scriptutils
import argparse_oe
logger = scriptutils.logger_create('pkgdatautil')
def tinfoil_init():
@@ -417,8 +418,8 @@ def find_path(args):
def main():
parser = argparse.ArgumentParser(description="OpenEmbedded pkgdata tool - queries the pkgdata files written out during do_package",
epilog="Use %(prog)s <subcommand> --help to get help on a specific command")
parser = argparse_oe.ArgumentParser(description="OpenEmbedded pkgdata tool - queries the pkgdata files written out during do_package",
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('-p', '--pkgdata-dir', help='Path to pkgdata directory (determined automatically if not specified)')
subparsers = parser.add_subparsers(title='subcommands', metavar='<subcommand>')