def discard_xlist(self, appid: str, name: str) -> None:
""" Deletes list `name` from XDATA `appid`. Ignores silently if XDATA
`appid` or list `name` not exist.
Args:
appid: APPID
name: list name
"""
try:
xdata = self.get(appid)
except DXFValueError:
pass
else:
try:
tags = remove_named_list_from_xdata(name, xdata)
except NotFoundException:
pass
else:
self.add(appid, tags)
def replace_xlist(self, appid: str, name: str, tags: Iterable) -> None:
""" Replaces list `name` of existing XDATA `appid` by `tags`. Appends
new list if list `name` do not exist, but raises `DXFValueError` if
XDATA `appid` do not exist.
Low level interface, if not sure use `set_xdata_list()` instead.
Args:
appid: APPID
name: list name
tags: list content as DXFTags or (code, value) tuples, list name and
curly braces '{' '}' tags will be added
Raises:
DXFValueError: XDATA `appid` do not exist
"""
xdata = self.get(appid)
try:
data = remove_named_list_from_xdata(name, xdata)
except NotFoundException:
data = xdata
xlist = xdata_list(name, tags)
data.extend(xlist)
self.add(appid, data)
