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7846: Avoid infinite loop when place cycle encountered

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This commit is contained in:
Nick Hall 2014-07-14 22:50:05 +01:00
parent 78ec767368
commit 8627429987
1 changed files with 23 additions and 9 deletions
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30
gramps/gen/utils/location.py
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@ -1,7 +1,7 @@
#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2013 Nick Hall
# Copyright (C) 2013-2014 Nick Hall
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
@ -31,9 +31,15 @@ def get_location_list(db, place):
"""
Return a list of place names for display.
"""
visited = [place.handle]
lines = [place.name]
while len(place.get_placeref_list()) > 0:
place = db.get_place_from_handle(place.get_placeref_list()[0].ref)
handle = place.get_placeref_list()[0].ref
if handle in visited:
break
else:
visited.append(handle)
place = db.get_place_from_handle(handle)
lines.append(place.name)
return lines
@ -47,9 +53,15 @@ def get_main_location(db, place):
Find all places in the hierarchy above the given place, and return the
result as a dictionary of place types and names.
"""
visited = [place.handle]
items = {int(place.get_type()): place.name}
while len(place.get_placeref_list()) > 0:
place = db.get_place_from_handle(place.get_placeref_list()[0].ref)
handle = place.get_placeref_list()[0].ref
if handle in visited:
break
else:
visited.append(handle)
place = db.get_place_from_handle(handle)
items[int(place.get_type())] = place.name
return items
@ -64,15 +76,17 @@ def get_locations(db, place):
containing dictionaries of place types and names.
"""
locations = []
todo = [(place, [(int(place.get_type()), place.get_all_names())])]
todo = [(place, [(int(place.get_type()), place.get_all_names())],
[place.handle])]
while len(todo):
place, tree = todo.pop()
if len(place.get_placeref_list()):
place, tree, visited = todo.pop()
for parent in place.get_placeref_list():
if parent.ref not in visited:
parent_place = db.get_place_from_handle(parent.ref)
parent_tree = tree + [(int(parent_place.get_type()),
parent_place.get_all_names())]
todo.append((parent_place, parent_tree))
else:
parent_visited = visited + [parent.ref]
todo.append((parent_place, parent_tree, parent_visited))
if len(place.get_placeref_list()) == 0:
locations.append(dict(tree))
return locations