def get_navcatalog(request_context, which, page_url, up_url, offset=0):
categories = request_context.get_categories()
if which not in categories:
raise HTTPNotFound('Category %r not found' % which)
items = categories[which]
updated = request_context.last_modified()
category_meta = request_context.db.field_metadata
meta = category_meta.get(which, {})
category_name = meta.get('name', which)
feed_title = default_feed_title + ' :: ' + _('By %s') % category_name
id_ = 'calibre-category-feed:' + which
MAX_ITEMS = request_context.opts.max_opds_ungrouped_items
if MAX_ITEMS > 0 and len(items) <= MAX_ITEMS:
max_items = request_context.opts.max_opds_items
offsets = Offsets(offset, max_items, len(items))
items = list(items)[offsets.offset:offsets.offset + max_items]
ans = CategoryFeed(items,
which,
id_,
updated,
request_context,
offsets,
page_url,
up_url,
title=feed_title)
else:
Group = namedtuple('Group', 'text count')
starts = set()
for x in items:
val = getattr(x, 'sort', x.name)
if not val:
val = 'A'
starts.add(val[0].upper())
category_groups = OrderedDict()
for x in sorted(starts, key=sort_key):
category_groups[x] = len(
[y for y in items if getattr(y, 'sort', y.name).startswith(x)])
items = [Group(x, y) for x, y in category_groups.items()]
max_items = request_context.opts.max_opds_items
offsets = Offsets(offset, max_items, len(items))
items = items[offsets.offset:offsets.offset + max_items]
ans = CategoryGroupFeed(items,
which,
id_,
updated,
request_context,
offsets,
page_url,
up_url,
title=feed_title)
request_context.outheaders['Last-Modified'] = http_date(
timestampfromdt(updated))
return ans.root
def get_acquisition_feed(rc,
ids,
offset,
page_url,
up_url,
id_,
sort_by='title',
ascending=True,
feed_title=None):
if not ids:
raise HTTPNotFound('No books found')
with rc.db.safe_read_lock:
sort_by = sanitize_sort_field_name(rc.db.field_metadata, sort_by)
items = rc.db.multisort([(sort_by, ascending)], ids)
max_items = rc.opts.max_opds_items
offsets = Offsets(offset, max_items, len(items))
items = items[offsets.offset:offsets.offset + max_items]
lm = rc.last_modified()
rc.outheaders['Last-Modified'] = http_date(timestampfromdt(lm))
return AcquisitionFeed(id_,
lm,
rc,
items,
offsets,
page_url,
up_url,
title=feed_title).root
def opds_categorygroup(ctx, rd, category, which):
try:
offset = int(rd.query.get('offset', 0))
except Exception:
raise HTTPNotFound('Not found')
if not which or not category:
raise HTTPNotFound('Not found')
rc = RequestContext(ctx, rd)
categories = rc.get_categories()
page_url = rc.url_for('/opds/categorygroup',
category=category,
which=which)
category = from_hex_unicode(category)
if category not in categories:
raise HTTPNotFound('Category %r not found' % which)
category_meta = rc.db.field_metadata
meta = category_meta.get(category, {})
category_name = meta.get('name', which)
which = from_hex_unicode(which)
feed_title = default_feed_title + ' :: ' + (_('By {0} :: {1}').format(
category_name, which))
owhich = as_hex_unicode('N' + which)
up_url = rc.url_for('/opds/navcatalog', which=owhich)
items = categories[category]
def belongs(x, which):
return getattr(x, 'sort', x.name).lower().startswith(which.lower())
items = [x for x in items if belongs(x, which)]
if not items:
raise HTTPNotFound('No items in group %r:%r' % (category, which))
updated = rc.last_modified()
id_ = 'calibre-category-group-feed:' + category + ':' + which
max_items = rc.opts.max_opds_items
offsets = Offsets(offset, max_items, len(items))
items = list(items)[offsets.offset:offsets.offset + max_items]
rc.outheaders['Last-Modified'] = http_date(timestampfromdt(updated))
return CategoryFeed(items,
category,
id_,
updated,
rc,
offsets,
page_url,
up_url,
title=feed_title).root
