Unify XPath NS config over modules

dosagelib/plugins/a.py

@@ -228,7 +228,7 @@ class Amya(WordPressScraper):
     url = 'http://www.amyachronicles.com/'
 
 
-class Angband(_ParserScraper):
+class Angband(ParserScraper):
     url = 'http://angband.calamarain.net/'
     stripUrl = url + '%s'
     imageSearch = '//img'
@@ -237,7 +237,7 @@ class Angband(_ParserScraper):
 
     def starter(self):
         page = self.getPage(self.url)
-        self.pages = page.xpath('//p/a[not(contains(@href, "cast"))]/@href')
+        self.pages = self.match(page, '//p/a[not(contains(@href, "cast"))]/@href')
         self.firstStripUrl = self.pages[0]
         return self.pages[-1]
 
@@ -267,7 +267,7 @@ class Annyseed(_ParserScraper):
         return tourl
 
 
-class AntiheroForHire(_ParserScraper):
+class AntiheroForHire(ParserScraper):
     stripUrl = 'https://www.giantrobot.club/antihero-for-hire/%s'
     firstStripUrl = stripUrl % '2016/6/8/entrance-vigil'
     url = firstStripUrl
@@ -278,7 +278,7 @@ class AntiheroForHire(_ParserScraper):
     def starter(self):
         # Build list of chapters for navigation
         page = self.getPage(self.url)
-        self.chapters = page.xpath('//ul[@class="archive-group-list"]//a[contains(@class, "archive-item-link")]/@href')
+        self.chapters = self.match(page, '//ul[d:class("archive-group-list")]//a[d:class("archive-item-link")]/@href')
         return self.chapters[0]
 
     def getPrevUrl(self, url, data):
@@ -314,7 +314,7 @@ class ArtificialIncident(WordPressWebcomic):
     firstStripUrl = stripUrl % 'issue-one-life-changing'
 
 
-class AstronomyPOTD(_ParserScraper):
+class AstronomyPOTD(ParserScraper):
     baseUrl = 'http://apod.nasa.gov/apod/'
     url = baseUrl + 'astropix.html'
     starter = bounceStarter
@@ -328,7 +328,7 @@ class AstronomyPOTD(_ParserScraper):
 
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
-        return data.xpath('//iframe')  # videos
+        return self.match(data, '//iframe')  # videos
 
     def namer(self, image_url, page_url):
         return '%s-%s' % (page_url.split('/')[-1].split('.')[0][2:],

dosagelib/plugins/c.py

@@ -34,11 +34,11 @@ class CaptainSNES(_BasicScraper):
     help = 'Index format: yyyy/mm/dd/nnn-stripname'
 
 
-class CarryOn(_ParserScraper):
+class CarryOn(ParserScraper):
     url = 'http://www.hirezfox.com/km/co/'
     stripUrl = url + 'd/%s.html'
     firstStripUrl = stripUrl % '20040701'
-    imageSearch = '//div[@class="strip"]/img'
+    imageSearch = '//div[d:class("strip")]/img'
     prevSearch = '//a[text()="Previous Day"]'
     multipleImagesPerStrip = True
 
@@ -122,13 +122,13 @@ class CatAndGirl(_ParserScraper):
     prevSearch = '//a[d:class("pager--prev")]'
 
 
-class CatenaManor(_ParserScraper):
+class CatenaManor(ParserScraper):
     baseUrl = ('https://web.archive.org/web/20141027141116/'
         'http://catenamanor.com/')
     url = baseUrl + 'archives'
     stripUrl = baseUrl + '%s/'
     firstStripUrl = stripUrl % '2003/07'
-    imageSearch = '//img[@class="comicthumbnail"]'
+    imageSearch = '//img[d:class("comicthumbnail")]'
     multipleImagesPerStrip = True
     endOfLife = True
     strips: List[str] = []
@@ -136,7 +136,7 @@ class CatenaManor(_ParserScraper):
     def starter(self):
         # Retrieve archive links and select valid range
         archivePage = self.getPage(self.url)
-        archiveStrips = archivePage.xpath('//div[@id="archivepage"]//a')
+        archiveStrips = self.match(archivePage, '//div[@id="archivepage"]//a')
         valid = False
         for link in archiveStrips:
             if self.stripUrl % '2012/01' in link.get('href'):

dosagelib/plugins/comicfury.py

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2004-2008 Tristan Seligmann and Jonathan Jacobs
+# SPDX-FileCopyrightText: © 2004 Tristan Seligmann and Jonathan Jacobs
-# Copyright (C) 2012-2014 Bastian Kleineidam
+# SPDX-FileCopyrightText: © 2012 Bastian Kleineidam
-# Copyright (C) 2015-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2015 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 import os
 
 from ..scraper import ParserScraper
@@ -79,7 +79,7 @@ class ComicFury(ParserScraper):
         num = parts[-1]
         if self.multipleImagesPerStrip:
             page = self.getPage(pageUrl)
-            images = page.xpath('//img[@class="comicsegmentimage"]/@src')
+            images = self.match(page, '//img[d:class("comicsegmentimage")]/@src')
             if len(images) > 1:
                 imageIndex = images.index(imageUrl) + 1
                 return "%s_%s-%d%s" % (self.prefix, num, imageIndex, ext)
@@ -88,8 +88,8 @@ class ComicFury(ParserScraper):
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
         # Videos on Underverse
-        return (data.xpath('//div[@id="comicimagewrap"]//video') and
+        return (self.match(data, '//div[@id="comicimagewrap"]//video') and
-            not data.xpath('//div[@id="comicimagewrap"]//img'))
+            not self.match(data, '//div[@id="comicimagewrap"]//img'))
 
     @classmethod
     def getmodules(cls):  # noqa: CFQ001

dosagelib/plugins/d.py

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2004-2008 Tristan Seligmann and Jonathan Jacobs
+# SPDX-FileCopyrightText: © 2004 Tristan Seligmann and Jonathan Jacobs
-# Copyright (C) 2012-2014 Bastian Kleineidam
+# SPDX-FileCopyrightText: © 2012 Bastian Kleineidam
-# Copyright (C) 2015-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2015 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from re import compile, escape
 
 from ..scraper import _BasicScraper, _ParserScraper, ParserScraper
@@ -328,19 +328,14 @@ class DreamKeepersPrelude(_ParserScraper):
     help = 'Index format: n'
 
 
-class DresdenCodak(_ParserScraper):
+class DresdenCodak(ParserScraper):
     url = 'http://dresdencodak.com/'
-    startUrl = url + 'cat/comic/'
     firstStripUrl = url + '2007/02/08/pom/'
     imageSearch = '//section[d:class("entry-content")]//img[d:class("aligncenter")]'
     prevSearch = '//a[img[contains(@src, "prev")]]'
     latestSearch = '//a[d:class("tc-grid-bg-link")]'
     starter = indirectStarter
 
-    # Blog and comic are mixed...
-    def shouldSkipUrl(self, url, data):
-        return not data.xpath(self.imageSearch)
-
 
 class DrFun(_ParserScraper):
     baseUrl = ('https://web.archive.org/web/20180726145737/'

dosagelib/plugins/derideal.py

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2019-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2019 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from ..scraper import ParserScraper
 from ..helpers import indirectStarter
 
@@ -27,7 +27,7 @@ class Derideal(ParserScraper):
 
     def starter(self):
         indexPage = self.getPage(self.url)
-        self.chapters = indexPage.xpath('//a[contains(text(), "Read this episode")]/@href')
+        self.chapters = self.match(indexPage, '//a[contains(text(), "Read this episode")]/@href')
         self.currentChapter = len(self.chapters)
         return indirectStarter(self)
 

dosagelib/plugins/e.py

@@ -113,7 +113,7 @@ class Erfworld(ParserScraper):
 
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
-        return not data.xpath(self.imageSearch)
+        return not self.match(data, self.imageSearch)
 
     def namer(self, imageUrl, pageUrl):
         # Fix inconsistent filenames
@@ -232,7 +232,7 @@ class ExtraFabulousComics(WordPressScraper):
         return '_'.join((pagepart, imagename))
 
     def shouldSkipUrl(self, url, data):
-        return data.xpath('//div[@id="comic"]//iframe')
+        return self.match(data, '//div[@id="comic"]//iframe')
 
 
 class ExtraLife(_BasicScraper):

dosagelib/plugins/f.py

@@ -140,7 +140,7 @@ class FoxDad(ParserScraper):
 
     def namer(self, imageUrl, pageUrl):
         page = self.getPage(pageUrl)
-        post = page.xpath('//li[@class="timestamp"]/a/@href')[0]
+        post = self.match(page, '//li[d:class("timestamp")]/a/@href')[0]
         post = post.replace('https://foxdad.com/post/', '')
         if '-consider-support' in post:
             post = post.split('-consider-support')[0]
@@ -216,7 +216,7 @@ class FriendsYouAreStuckWith(WordPressScraper):
 
     def namer(self, imageUrl, pageUrl):
         page = self.getPage(pageUrl)
-        strip = page.xpath('//div[@id="comic-wrap"]/@class')[0].replace('comic-id-', '')
+        strip = self.match(page, '//div[@id="comic-wrap"]/@class')[0].replace('comic-id-', '')
         return strip + '_' + imageUrl.rstrip('/').rsplit('/', 1)[-1]
 
 

dosagelib/plugins/gocomics.py

@@ -31,7 +31,7 @@ class GoComics(ParserScraper):
 
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
-        return data.xpath('//img[contains(@src, "content-error-missing")]')
+        return self.match(data, '//img[contains(@src, "content-error-missing")]')
 
     @classmethod
     def getmodules(cls):  # noqa: CFQ001

dosagelib/plugins/kemonocafe.py

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2019-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2019 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from ..scraper import ParserScraper
 
 
@@ -44,7 +44,7 @@ class KemonoCafe(ParserScraper):
         # Fix unordered filenames
         if 'addictivescience' in pageUrl:
             page = self.getPage(pageUrl)
-            num = int(page.xpath('//div[@id="comic-wrap"]/@class')[0].replace('comic-id-', ''))
+            num = int(self.match(page, '//div[@id="comic-wrap"]/@class')[0].replace('comic-id-', ''))
             filename = '%04d_%s' % (num, filename)
         elif 'CaughtInOrbit' in filename:
             filename = filename.replace('CaughtInOrbit', 'CIO')

dosagelib/plugins/l.py

@@ -38,7 +38,7 @@ class LazJonesAndTheMayfieldRegulatorsSideStories(LazJonesAndTheMayfieldRegulato
 
     def getPrevUrl(self, url, data):
         # Fix broken navigation links
-        if url == self.url and data.xpath(self.prevSearch + '/@href')[0] == self.stripUrl % 'summer00':
+        if url == self.url and self.match(data, self.prevSearch + '/@href')[0] == self.stripUrl % 'summer00':
             return self.stripUrl % 'summer21'
         return super(LazJonesAndTheMayfieldRegulators, self).getPrevUrl(url, data)
 

dosagelib/plugins/m.py

@@ -9,7 +9,6 @@ from re import compile, IGNORECASE
 from ..helpers import indirectStarter
 from ..scraper import ParserScraper, _BasicScraper, _ParserScraper
 from ..util import tagre
-from ..xml import NS
 from .common import ComicControlScraper, WordPressScraper, WordPressWebcomic
 
 
@@ -153,7 +152,7 @@ class MonkeyUser(ParserScraper):
 
     def shouldSkipUrl(self, url, data):
         # videos
-        return data.xpath('//div[d:class("video-container")]', namespaces=NS)
+        return self.match(data, '//div[d:class("video-container")]')
 
 
 class MonsieurLeChien(ParserScraper):

dosagelib/plugins/p.py

@@ -166,7 +166,7 @@ class PHDComics(ParserScraper):
             # video
             self.stripUrl % '1880',
             self.stripUrl % '1669',
-        ) or data.xpath('//img[@id="comic" and contains(@src, "phd083123s")]')
+        ) or self.match(data, '//img[@id="comic" and contains(@src, "phd083123s")]')
 
 
 class Picklewhistle(ComicControlScraper):

dosagelib/plugins/r.py

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2004-2008 Tristan Seligmann and Jonathan Jacobs
+# SPDX-FileCopyrightText: © 2004 Tristan Seligmann and Jonathan Jacobs
-# Copyright (C) 2012-2014 Bastian Kleineidam
+# SPDX-FileCopyrightText: © 2012 Bastian Kleineidam
-# Copyright (C) 2015-2021 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2015 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from re import compile
 from urllib.parse import urljoin
 
@@ -121,7 +121,7 @@ class Requiem(WordPressScraper):
     firstStripUrl = stripUrl % '2004-06-07-3'
 
 
-class Replay(_ParserScraper):
+class Replay(ParserScraper):
     url = 'http://replaycomic.com/'
     stripUrl = url + 'comic/%s/'
     firstStripUrl = stripUrl % 'red-desert'
@@ -132,11 +132,11 @@ class Replay(_ParserScraper):
     def starter(self):
         # Retrieve archive page to identify chapters
         archivePage = self.getPage(self.url + 'archive')
-        archive = archivePage.xpath('//div[@class="comic-archive-chapter-wrap"]')
+        archive = self.match(archivePage, '//div[d:class("comic-archive-chapter-wrap")]')
         self.chapter = len(archive) - 1
         self.startOfChapter = []
         for archiveChapter in archive:
-            self.startOfChapter.append(archiveChapter.xpath('.//a')[0].get('href'))
+            self.startOfChapter.append(self.match(archiveChapter, './/a')[0].get('href'))
         return bounceStarter(self)
 
     def namer(self, imageUrl, pageUrl):

dosagelib/plugins/s.py

@@ -435,7 +435,7 @@ class SpaceFurries(ParserScraper):
     def extract_image_urls(self, url, data):
         # Website requires JS, so build the list of image URLs manually
         imageurls = []
-        current = int(data.xpath('//input[@name="pagnum"]')[0].get('value'))
+        current = int(self.match(data, '//input[@name="pagnum"]')[0].get('value'))
         for page in reversed(range(1, current + 1)):
             imageurls.append(self.url + 'comics/' + str(page) + '.jpg')
         return imageurls
@@ -636,16 +636,16 @@ class StrongFemaleProtagonist(_ParserScraper):
         )
 
 
-class StupidFox(_ParserScraper):
+class StupidFox(ParserScraper):
     url = 'http://stupidfox.net/'
     stripUrl = url + '%s'
     firstStripUrl = stripUrl % 'hello'
-    imageSearch = '//div[@class="comicmid"]//img'
+    imageSearch = '//div[d:class("comicmid")]//img'
     prevSearch = '//a[@accesskey="p"]'
 
     def namer(self, imageUrl, pageUrl):
         page = self.getPage(pageUrl)
-        title = page.xpath(self.imageSearch + '/@title')[0].replace(' - ', '-').replace(' ', '-')
+        title = self.match(page, self.imageSearch + '/@title')[0].replace(' - ', '-').replace(' ', '-')
         return title + '.' + imageUrl.rsplit('.', 1)[-1]
 
 

dosagelib/plugins/shivaestudios.py

@@ -19,7 +19,7 @@ class AlienDice(WordPressSpliced):
 
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
-        return not data.xpath(self.imageSearch)
+        return not self.match(data, self.imageSearch)
 
     def getPrevUrl(self, url, data):
         # Fix broken navigation

dosagelib/plugins/tapas.py

@@ -3,7 +3,6 @@
 # SPDX-FileCopyrightText: © 2019 Daniel Ring
 from ..output import out
 from ..scraper import ParserScraper
-from ..xml import NS
 
 
 class Tapas(ParserScraper):
@@ -21,7 +20,7 @@ class Tapas(ParserScraper):
     def starter(self):
         # Retrieve comic metadata from info page
         info = self.getPage(self.url)
-        series = info.xpath('//@data-series-id')[0]
+        series = self.match(info, '//@data-series-id')[0]
         # Retrieve comic metadata from API
         data = self.session.get(self.baseUrl + 'series/' + series + '/episodes?sort=NEWEST')
         data.raise_for_status()
@@ -43,7 +42,7 @@ class Tapas(ParserScraper):
         return self._cached_image_urls
 
     def shouldSkipUrl(self, url, data):
-        if data.xpath('//button[d:class("js-have-to-sign")]', namespaces=NS):
+        if self.match(data, '//button[d:class("js-have-to-sign")]'):
             out.warn(f'Nothing to download on "{url}", because a login is required.')
             return True
         return False

dosagelib/plugins/u.py

@@ -107,7 +107,7 @@ class Unsounded(ParserScraper):
         return urls
 
     def extract_css_bg(self, page) -> str | None:
-        comicdivs = page.xpath('//div[@id="comic"]')
+        comicdivs = self.match(page, '//div[@id="comic"]')
         if comicdivs:
             style = comicdivs[0].attrib.get('style')
             if style:

dosagelib/plugins/v.py

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2004-2008 Tristan Seligmann and Jonathan Jacobs
+# SPDX-FileCopyrightText: © 2004 Tristan Seligmann and Jonathan Jacobs
-# Copyright (C) 2012-2014 Bastian Kleineidam
+# SPDX-FileCopyrightText: © 2012 Bastian Kleineidam
-# Copyright (C) 2015-2020 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2015 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 
 from ..scraper import ParserScraper, _ParserScraper
 from ..helpers import bounceStarter, indirectStarter
@@ -44,15 +44,15 @@ class Vibe(ParserScraper):
     help = 'Index format: VIBEnnn (padded)'
 
 
-class VickiFox(_ParserScraper):
+class VickiFox(ParserScraper):
     url = 'http://www.vickifox.com/comic/strip'
     stripUrl = url + '?id=%s'
     firstStripUrl = stripUrl % '001'
     imageSearch = '//img[contains(@src, "comic/")]'
     prevSearch = '//button[@id="btnPrev"]/@value'
 
-    def getPrevUrl(self, url, data):
+    def link_modifier(self, fromurl, tourl):
-        return self.stripUrl % self.getPage(url).xpath(self.prevSearch)[0]
+        return self.stripUrl % tourl
 
 
 class ViiviJaWagner(_ParserScraper):

dosagelib/plugins/w.py

@@ -1,8 +1,8 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2004-2008 Tristan Seligmann and Jonathan Jacobs
+# SPDX-FileCopyrightText: © 2004 Tristan Seligmann and Jonathan Jacobs
-# Copyright (C) 2012-2014 Bastian Kleineidam
+# SPDX-FileCopyrightText: © 2012 Bastian Kleineidam
-# Copyright (C) 2015-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2015 Tobias Gruetzmacher
-# Copyright (C) 2019-2020 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from re import compile, escape, IGNORECASE
 
 from ..scraper import ParserScraper, _BasicScraper, _ParserScraper
@@ -17,7 +17,7 @@ class WapsiSquare(WordPressNaviIn):
 
     def shouldSkipUrl(self, url, data):
         """Skip pages without images."""
-        return data.xpath('//iframe')  # videos
+        return self.match(data, '//iframe')  # videos
 
 
 class WastedTalent(_ParserScraper):

dosagelib/plugins/webtoons.py

@@ -24,9 +24,9 @@ class WebToons(ParserScraper):
             self.session.cookies.set(cookie, 'false', domain='webtoons.com')
         # Find current episode number
         listPage = self.getPage(self.listUrl)
-        currentEpisode = listPage.xpath('//div[@class="detail_lst"]/ul/li')[0].attrib['data-episode-no']
+        currentEpisode = self.match(listPage, '//div[d:class("detail_lst")]/ul/li')[0].attrib['data-episode-no']
         # Check for completed tag
-        self.endOfLife = (listPage.xpath('//div[@id="_asideDetail"]//span[@class="txt_ico_completed2"]') != [])
+        self.endOfLife = not self.match(listPage, '//div[@id="_asideDetail"]//span[d:class("txt_ico_completed2")]')
         return self.stripUrl % currentEpisode
 
     def extract_image_urls(self, url, data):

dosagelib/plugins/wrongside.py

@@ -1,6 +1,6 @@
 # SPDX-License-Identifier: MIT
-# Copyright (C) 2019-2022 Tobias Gruetzmacher
+# SPDX-FileCopyrightText: © 2019 Tobias Gruetzmacher
-# Copyright (C) 2019-2022 Daniel Ring
+# SPDX-FileCopyrightText: © 2019 Daniel Ring
 from ..scraper import ParserScraper
 from ..helpers import indirectStarter
 
@@ -15,21 +15,21 @@ class Wrongside(ParserScraper):
 
     def starter(self):
         archivePage = self.getPage(self.url)
-        chapterUrls = archivePage.xpath('//ul[@class="albThumbs"]//a/@href')
+        chapterUrls = self.match(archivePage, '//ul[d:class("albThumbs")]//a/@href')
         self.archive = []
         for chapterUrl in chapterUrls:
             chapterPage = self.getPage(chapterUrl)
-            self.archive.append(chapterPage.xpath('(//ul[@id="thumbnails"]//a/@href)[last()]')[0])
+            self.archive.append(self.match(chapterPage, '(//ul[@id="thumbnails"]//a/@href)[last()]')[0])
         return self.archive[0]
 
     def getPrevUrl(self, url, data):
-        if data.xpath(self.prevSearch) == [] and len(self.archive) > 0:
+        if self.match(data, self.prevSearch) == [] and len(self.archive) > 0:
             return self.archive.pop()
         return super(Wrongside, self).getPrevUrl(url, data)
 
     def namer(self, imageUrl, pageUrl):
         page = self.getPage(pageUrl)
-        title = page.xpath('//div[@class="browsePath"]/h2/text()')[0]
+        title = self.match(page, '//div[d:class("browsePath")]/h2/text()')[0]
         return title.replace('"', '') + '.' + imageUrl.rsplit('.', 1)[-1]
 
 
@@ -71,5 +71,5 @@ class WrongsideSideStories(ParserScraper):
 
     def namer(self, imageUrl, pageUrl):
         page = self.getPage(pageUrl)
-        title = page.xpath('//div[@class="browsePath"]/h2/text()')[0]
+        title = self.match(page, '//div[d:class("browsePath")]/h2/text()')[0]
         return title.replace('"', '') + '.' + imageUrl.rsplit('.', 1)[-1]

dosagelib/scraper.py

@@ -521,15 +521,10 @@ class ParserScraper(Scraper):
         return text.strip()
 
     def _matchPattern(self, data, patterns):
-        if self.css:
-            searchFun = data.cssselect
-        else:
-            def searchFun(s):
-                return data.xpath(s, namespaces=NS)
         patterns = makeSequence(patterns)
         for search in patterns:
             matched = False
-            for match in searchFun(search):
+            for match in self.match(data, search):
                 matched = True
                 yield match, search
 
@@ -537,6 +532,13 @@ class ParserScraper(Scraper):
                 # do not search other links if one pattern matched
                 break
 
+    def match(self, data, pattern):
+        """Match a pattern (XPath/CSS) against a page."""
+        if self.css:
+            return data.cssselect(pattern)
+        else:
+            return data.xpath(pattern, namespaces=NS)
+
     def getDisabledReasons(self):
         res = {}
         if self.css and cssselect is None: