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-rw-r--r--libbe/bug.py11
-rw-r--r--libbe/utility.py21
2 files changed, 22 insertions, 10 deletions
diff --git a/libbe/bug.py b/libbe/bug.py
index e3dc1e0..f3448e2 100644
--- a/libbe/bug.py
+++ b/libbe/bug.py
@@ -187,15 +187,8 @@ class Bug(settings_object.SavedSettingsObject):
doc="An integer version of .time_string")
def _extra_strings_check_fn(value):
- "Require an iterable full of strings"
- if value == settings_object.EMPTY:
- return True
- elif not hasattr(value, "__iter__"):
- return False
- for x in value:
- if type(x) not in types.StringTypes:
- return False
- return True
+ return utility.iterable_full_of_strings(value, \
+ alternative=settings_object.EMPTY)
def _extra_strings_change_hook(self, old, new):
self.extra_strings.sort() # to make merging easier
self._prop_save_settings(old, new)
diff --git a/libbe/utility.py b/libbe/utility.py
index f27d7eb..3df06b4 100644
--- a/libbe/utility.py
+++ b/libbe/utility.py
@@ -23,7 +23,6 @@ import time
import types
import doctest
-
def search_parent_directories(path, filename):
"""
Find the file (or directory) named filename in path or in any
@@ -106,5 +105,25 @@ def time_to_gmtime(str_time):
time_val = str_to_time(str_time)
return time_to_str(time_val)
+def iterable_full_of_strings(value, alternative=None):
+ """
+ Require an iterable full of strings.
+ >>> iterable_full_of_strings([])
+ True
+ >>> iterable_full_of_strings(["abc", "def", u"hij"])
+ True
+ >>> iterable_full_of_strings(["abc", None, u"hij"])
+ False
+ >>> iterable_full_of_strings(None, alternative=None)
+ True
+ """
+ if value == alternative:
+ return True
+ elif not hasattr(value, "__iter__"):
+ return False
+ for x in value:
+ if type(x) not in types.StringTypes:
+ return False
+ return True
suite = doctest.DocTestSuite()