[gnome-continuous-yocto/gnomeostree-3.28-rocko: 3680/8267] oe-trim-schemas: create usage output

[Emmanuele Bassi <ebassi src gnome org>]

commit 3c3f5c5160927c9c3fd1187c55add4f23cc3cdfd
Author: Ed Bartosh <ed bartosh linux intel com>
Date:   Thu Dec 8 18:56:49 2016 +0200

    oe-trim-schemas: create usage output
    
    Created usage output for oe-trim-schemas script.
    
    [YOCTO #10751]
    
    (From OE-Core rev: a9fac12157ed434a6711de1af77eda1f4a8e9e8a)
    
    Signed-off-by: Ed Bartosh <ed bartosh linux intel com>
    Signed-off-by: Ross Burton <ross burton intel com>
    Signed-off-by: Richard Purdie <richard purdie linuxfoundation org>

 scripts/oe-trim-schemas |    9 +++++++++
 1 files changed, 9 insertions(+), 0 deletions(-)
---
diff --git a/scripts/oe-trim-schemas b/scripts/oe-trim-schemas
index 66a1b8d..7c199ef 100755
--- a/scripts/oe-trim-schemas
+++ b/scripts/oe-trim-schemas
@@ -18,6 +18,15 @@ def children (elem, name=None):
         l = [e for e in l if e.tag == name]
     return l
 
+if len(sys.argv) < 2 or sys.argv[1] in ('-h', '--help'):
+    print('oe-trim-schemas: error: the following arguments are required: schema\n'
+          'Usage: oe-trim-schemas schema\n\n'
+          'OpenEmbedded trim schemas - remove unneeded schema locale translations\n'
+          '                            from gconf schema files\n\n'
+          'arguments:\n'
+          '  schema                gconf schema file to trim\n')
+    sys.exit(2)
+
 xml = etree.parse(sys.argv[1])
 
 for schema in child(xml.getroot(), "schemalist").getchildren():