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Refactor join_collection

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See #194
This commit is contained in:
Markus Unterwaditzer 2015-04-23 15:47:18 +02:00
parent d37d85dc26
commit e80f10aa99
1 changed files with 19 additions and 6 deletions
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25
vdirsyncer/utils/vobject.py
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@ -134,7 +134,6 @@ _default_join_wrappers = {
u'VCARD': u'VADDRESSBOOK'
}
def join_collection(items, wrappers=_default_join_wrappers):
'''
:param wrappers: {
@ -145,22 +144,32 @@ def join_collection(items, wrappers=_default_join_wrappers):
items1, items2 = tee((_Component.parse(x)
for x in items), 2)
item_type, wrapper_type = _get_item_type(items1, wrappers)
wrapper_props = []
def _get_item_components(x):
return x.name == wrapper_type and x.subcomponents or [x]
if x.name == wrapper_type:
wrapper_props.extend(x.props)
return x.subcomponents
else:
return [x]
components = chain(*(_get_item_components(x) for x in items2))
lines = chain(*uniq(tuple(x.dump_lines()) for x in components))
if wrapper_type is not None:
start = [u'BEGIN:{}'.format(wrapper_type)]
end = [u'END:{}'.format(wrapper_type)]
lines = chain(start, lines, end)
lines = chain(*(
[u'BEGIN:{}'.format(wrapper_type)],
uniq(wrapper_props),
lines,
[u'END:{}'.format(wrapper_type)]
))
return u''.join(line + u'\r\n' for line in lines)
def _get_item_type(components, wrappers):
i = 0
for component in components:
i += 1
try:
item_type = component.name
wrapper_type = wrappers[item_type]
@ -168,7 +177,11 @@ def _get_item_type(components, wrappers):
pass
else:
return item_type, wrapper_type
return None, None
if not i:
return None, None
else:
raise ValueError('Not sure how to join components.')
class _Component(object):