View Single Post
Old 02-25-2011, 04:15 PM   #5
tobias2
Member
tobias2 began at the beginning.
 
Posts: 18
Karma: 36
Join Date: Feb 2011
Device: Kindle
Improved version of the recipe

Hi,

May I suggest the following improved version of the "Die Zeit" recipe. General improvements include the correct handling of dashes and the download of the correct cover based on the front page of the newspaper; while improvements specifically for Kindle users include the removal of the empty left margin as well as the conversion of subscript numbers to non-subscripted but smaller numbers (the Kindle does not render the subscript unicode characters). The latter is important, for example, when articles talk about CO2. Here's the new recipe:

Code:
#!/usr/bin/env  python
# -*- coding: utf-8 mode: python -*-

__license__   = 'GPL v3'
__copyright__ = '2010-2011, Steffen Siebert <calibre at steffensiebert.de>'
__docformat__ = 'restructuredtext de'
__version__   = '1.2'

"""
Die Zeit EPUB
"""

import os, urllib2, zipfile, re, string
from calibre.web.feeds.news import BasicNewsRecipe
from calibre.ptempfile import PersistentTemporaryFile
from calibre import walk

class ZeitEPUBAbo(BasicNewsRecipe):

    title = u'Die Zeit'
    description = u'Das EPUB Abo der Zeit (needs subscription)'
    language = 'de'
    lang = 'de-DE'

    __author__ = 'Steffen Siebert, revised by Tobias Isenberg (with some code by Kovid Goyal)'
    needs_subscription = True

    conversion_options = {
        'no_default_epub_cover' : True,
        # fixing the wrong left margin
        'mobi_ignore_margins' : True,
    }

    preprocess_regexps    = [
        # filtering for correct dashes
        (re.compile(r' - '), lambda match: '  '), # regular "Gedankenstrich"
        (re.compile(r' -,'), lambda match: ' ,'), # "Gedankenstrich" before a comma
        (re.compile(r'(?<=\d)-(?=\d)'), lambda match: ''), # number-number
        # filtering for unicode characters that are missing on the Kindle,
        # try to replace them with meaningful work-arounds
        (re.compile(u'\u2080'), lambda match: '<span style="font-size: 50%;">0</span>'), # subscript-0
        (re.compile(u'\u2081'), lambda match: '<span style="font-size: 50%;">1</span>'), # subscript-1
        (re.compile(u'\u2082'), lambda match: '<span style="font-size: 50%;">2</span>'), # subscript-2
        (re.compile(u'\u2083'), lambda match: '<span style="font-size: 50%;">3</span>'), # subscript-3
        (re.compile(u'\u2084'), lambda match: '<span style="font-size: 50%;">4</span>'), # subscript-4
        (re.compile(u'\u2085'), lambda match: '<span style="font-size: 50%;">5</span>'), # subscript-5
        (re.compile(u'\u2086'), lambda match: '<span style="font-size: 50%;">6</span>'), # subscript-6
        (re.compile(u'\u2087'), lambda match: '<span style="font-size: 50%;">7</span>'), # subscript-7
        (re.compile(u'\u2088'), lambda match: '<span style="font-size: 50%;">8</span>'), # subscript-8
        (re.compile(u'\u2089'), lambda match: '<span style="font-size: 50%;">9</span>'), # subscript-9
    ]

    def build_index(self):
        domain = "http://premium.zeit.de"
        url = domain + "/abovorteile/cgi-bin/_er_member/p4z.fpl?ER_Do=getUserData&ER_NextTemplate=login_ok"

        browser = self.get_browser()
        browser.add_password("http://premium.zeit.de", self.username, self.password)

        try:
            browser.open(url)
        except urllib2.HTTPError:
            self.report_progress(0,_("Can't login to download issue"))
            raise ValueError('Failed to login, check your username and password')

        response = browser.follow_link(text="DIE ZEIT als E-Paper")
        response = browser.follow_link(url_regex=re.compile('^http://contentserver.hgv-online.de/nodrm/fulfillment\\?distributor=zeit-online&orderid=zeit_online.*'))

        tmp = PersistentTemporaryFile(suffix='.epub')
        self.report_progress(0,_('downloading epub'))
        tmp.write(response.read())
        tmp.close()

        zfile = zipfile.ZipFile(tmp.name, 'r')
        self.report_progress(0,_('extracting epub'))

        zfile.extractall(self.output_dir)

        tmp.close()

        index = os.path.join(self.output_dir, 'content.opf')

        self.report_progress(1,_('epub downloaded and extracted'))

        # doing regular expression filtering
        for path in walk('.'):
            (shortname, extension) = os.path.splitext(path)  
            if extension.lower() in ('.html', '.htm', '.xhtml'):
                with open(path, 'r+b') as f:
                    raw = f.read()
                    raw = raw.decode('utf-8')
                    for pat, func in self.preprocess_regexps:
                        raw = pat.sub(func, raw)
                    f.seek(0)
                    f.truncate()
                    f.write(raw.encode('utf-8'))

        # adding real cover
        self.report_progress(0,_('trying to download cover image (titlepage)'))
        self.download_cover()
        self.conversion_options["cover"] = self.cover_path

        return index

    # getting url of the cover
    def get_cover_url(self):
        try:
            inhalt = self.index_to_soup('http://www.zeit.de/inhalt')
            cover_url = inhalt.find('div', attrs={'class':'singlearchive clearfix'}).img['src'].replace('icon_','')
        except:
            cover_url = 'http://images.zeit.de/bilder/titelseiten_zeit/1946/001_001.jpg'
        return cover_url
Cheers,

Tobias
tobias2 is offline   Reply With Quote