Cutlery/calibre
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When keeping x periodical issues be a little more careful about what we delete

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This commit is contained in:
Kovid Goyal 2011-02-27 16:18:56 -07:00
parent f962167b5c
commit e16f04e7b7
2 changed files with 11 additions and 5 deletions
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3
src/calibre/gui2/actions/fetch_news.py
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@ -67,7 +67,8 @@ class FetchNewsAction(InterfaceAction):
keep_issues = 0
if keep_issues > 0:
ids_with_tag = list(sorted(self.gui.library_view.model().
db.tags_older_than(arg['title'], None), reverse=True))
db.tags_older_than(arg['title'],
None, must_have_tag=_('News')), reverse=True))
ids_to_delete = ids_with_tag[keep_issues:]
if ids_to_delete:
self.gui.library_view.model().delete_books_by_id(ids_to_delete)

13
src/calibre/library/database2.py
View File

@ -1503,25 +1503,30 @@ class LibraryDatabase2(LibraryDatabase, SchemaUpgrade, CustomColumns):
############# End get_categories
def tags_older_than(self, tag, delta):
def tags_older_than(self, tag, delta, must_have_tag=None):
'''
Return the ids of all books having the tag ``tag`` that are older than
than the specified time. tag comparison is case insensitive.
:param delta: A timedelta object or None. If None, then all ids with
the tag are returned.
:param must_have_tag: If not None the list of matches will be
restricted to books that have this tag
'''
tag = tag.lower().strip()
mht = must_have_tag.lower().strip() if must_have_tag else None
now = nowf()
tindex = self.FIELD_MAP['timestamp']
gindex = self.FIELD_MAP['tags']
iindex = self.FIELD_MAP['id']
for r in self.data._data:
if r is not None:
if delta is None or (now - r[tindex]) > delta:
tags = r[gindex]
if tags and tag in [x.strip() for x in
tags.lower().split(',')]:
yield r[self.FIELD_MAP['id']]
if tags:
tags = [x.strip() for x in tags.lower().split(',')]
if tag in tags and (mht is None or mht in tags):
yield r[iindex]
def get_next_series_num_for(self, series):
series_id = self.conn.get('SELECT id from series WHERE name=?',