Current File : //usr/lib/calibre/calibre/web/feeds/recipes/__init__.py
#!/usr/bin/env python3
__license__ = 'GPL v3'
__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
'''
Builtin recipes.
'''
import re, time, io
from calibre.web.feeds.news import (BasicNewsRecipe, CustomIndexRecipe,
AutomaticNewsRecipe, CalibrePeriodical)
from calibre.ebooks.BeautifulSoup import BeautifulSoup
from calibre.utils.config import JSONConfig
from polyglot.builtins import itervalues, codepoint_to_chr
basic_recipes = (BasicNewsRecipe, AutomaticNewsRecipe, CustomIndexRecipe,
CalibrePeriodical)
custom_recipes = JSONConfig('custom_recipes/index.json')
def custom_recipe_filename(id_, title):
from calibre.utils.filenames import ascii_filename
return ascii_filename(title[:50]) + \
('_%s.recipe'%id_)
def compile_recipe(src):
'''
Compile the code in src and return a recipe object, if found.
:param src: Python source code as bytestring or unicode object
:return: Recipe class or None, if no such class was found in src
'''
if not isinstance(src, str):
match = re.search(br'coding[:=]\s*([-\w.]+)', src[:200])
enc = match.group(1).decode('utf-8') if match else 'utf-8'
src = src.decode(enc)
# Python complains if there is a coding declaration in a unicode string
src = re.sub(r'^#.*coding\s*[:=]\s*([-\w.]+)', '#', src.lstrip('\ufeff'), flags=re.MULTILINE)
# Translate newlines to \n
src = io.StringIO(src, newline=None).getvalue()
namespace = {
'BasicNewsRecipe':BasicNewsRecipe,
'AutomaticNewsRecipe':AutomaticNewsRecipe,
'time':time, 're':re,
'BeautifulSoup':BeautifulSoup,
'unicode': str,
'unichr': codepoint_to_chr,
'xrange': range,
}
exec(src, namespace)
ua = namespace.get('calibre_most_common_ua')
for x in itervalues(namespace):
if (isinstance(x, type) and issubclass(x, BasicNewsRecipe) and x not
in basic_recipes):
x.calibre_most_common_ua = ua
return x
return None
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