def get_tag(el):
""" :returns: `geographic_msgs/KeyValue`_ message for `<tag>` *el* if any, None otherwise. """
pair = None
key = el.get('k')
if key != None:
pair = KeyValue()
pair.key = key
pair.value = get_required_attribute(el, 'v')
return pair
def get_tag(el):
""" Get a KeyValue pair from a <tag> element.
:returns: KeyValue pair if any, None otherwise.
"""
pair = None
key = el.get('k')
if key != None:
pair = KeyValue()
pair.key = key
pair.value = get_required_attribute(el, 'v')
return pair
def get_tag(el):
""" Get a KeyValue pair from a <tag> element.
:returns: KeyValue pair if any, None otherwise.
"""
pair = None
key = el.get('k')
if key != None:
pair = KeyValue()
pair.key = key
pair.value = get_required_attribute(el, 'v')
return pair
def put(msg, key, val=''):
""" Add KeyValue to message properties.
:param msg: Message to update.
:param key: Property key name.
:param value: Corresponding value string (default '').
"""
for prop in msg.props:
if prop.key == key:
# key already present, update value
prop.value = str(val)
return
# key missing, append a new KeyValue pair
msg.props.append(KeyValue(key=key, value=str(val)))
