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SONY driver: Only update the timestamp in the XML db for newly added books

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Kovid Goyal 2010-07-04 08:14:49 -06:00
commit b7a68652d5
1 changed files with 31 additions and 4 deletions
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35
src/calibre/devices/prs505/sony_cache.py
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@ -345,17 +345,20 @@ class XMLCache(object):
debug_print('Updating XML Cache:', i)
root = self.record_roots[i]
lpath_map = self.build_lpath_map(root)
gtz_count = ltz_count = 0
for book in booklist:
path = os.path.join(self.prefixes[i], *(book.lpath.split('/')))
record = lpath_map.get(book.lpath, None)
if record is None:
record = self.create_text_record(root, i, book.lpath)
self.update_text_record(record, book, path, i)
(gtz_count, ltz_count) = self.update_text_record(record, book,
path, i, gtz_count, ltz_count)
# Ensure the collections in the XML database are recorded for
# this book
if book.device_collections is None:
book.device_collections = []
book.device_collections = playlist_map.get(book.lpath, [])
debug_print('Timezone votes: %d GMT, %d LTZ'%(gtz_count, ltz_count))
self.update_playlists(i, root, booklist, collections_attributes)
# Update the device collections because update playlist could have added
# some new ones.
@ -453,15 +456,38 @@ class XMLCache(object):
root.append(ans)
return ans
def update_text_record(self, record, book, path, bl_index):
def update_text_record(self, record, book, path, bl_index, gtz_count, ltz_count):
'''
Update the Sony database from the book. This is done if the timestamp in
the db differs from the timestamp on the file.
'''
# It seems that a Sony device can sometimes know what timezone it is in,
# and apparently converts the dates to GMT when it writes them to the
# db. Unfortunately, we can't tell when it does this, so we use a
# horrible heuristic. First, set dates only for new books, trying to
# avoid upsetting the sony. Use the timezone determined through the
# voting described next. Second, voting: if a book is not new, compare
# its Sony DB date against localtime and gmtime. Count the matches. When
# we must set a date, use the one with the most matches. Use localtime
# if the case of a tie, and hope it is right.
timestamp = os.path.getmtime(path)
date = strftime(timestamp)
if date != record.get('date', None):
rec_date = record.get('date', None)
if not getattr(book, '_new_book', False): # book is not new
if strftime(timestamp, zone=time.gmtime) == rec_date:
gtz_count += 1
elif strftime(timestamp, zone=time.localtime) == rec_date:
ltz_count += 1
else: # book is new. Set the time using the current votes
if ltz_count >= gtz_count:
tz = time.localtime
debug_print("Using localtime TZ for new book", book.lpath)
else:
tz = time.gmtime
debug_print("Using GMT TZ for new book", book.lpath)
date = strftime(timestamp, zone=tz)
record.set('date', date)
record.set('size', str(os.stat(path).st_size))
title = book.title if book.title else _('Unknown')
record.set('title', title)
@ -486,6 +512,7 @@ class XMLCache(object):
if 'id' not in record.attrib:
num = self.max_id(record.getroottree().getroot())
record.set('id', str(num+1))
return (gtz_count, ltz_count)
# }}}
# Writing the XML files {{{