Python scraper.HTMLScraper类代码示例

    def test_javascript_heavy_inline_monstrosity(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, 'OK')

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples',
                                          'twitchplayspokemonfirered.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertIn(
            'http://cdn.bulbagarden.net/upload/archive/a/a4/'
            '20090718115357%21195Quagsire.png',
            inline_urls
        )
        self.assertIn(
            'http://www.google.com/url?q=http%3A%2F%2Fwww.reddit.com%2F'
            'user%2FGoldenSandslash15&sa=D&sntz=1&'
            'usg=AFQjCNElFBxZYdNm5mWoRSncf5tbdIJQ-A',
            linked_urls
        )

    def test_html_scraper_links_base_href(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, 'OK')

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples',
                                          'basehref.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual('utf-8', scrape_info['encoding'])

        self.assertEqual({
            'http://cdn.example.com/stylesheet1.css',
            'http://www.example.com/stylesheet2.css',
            'http://example.com/a/stylesheet3.css',
            'http://example.com/a/dir/image1.png',
            'http://example.com/dir/image2.png',
            'http://example.net/image3.png',
            'http://example.com/dir/image4.png',
            },
            inline_urls
        )
        self.assertEqual({
            'http://example.com/a/'
            },
            linked_urls
        )

    def test_rss_as_html(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['content-type'] = 'application/rss+xml'

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples', 'rss.xml')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)

        self.assertTrue(scrape_info)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']
        self.assertFalse(
            inline_urls
        )
        self.assertEqual(
            {
                'http://www.someexamplerssdomain.com/main.html',
                'http://www.wikipedia.org/'
            },
            linked_urls
        )

    def test_xhtml_invalid(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples',
                                          'xhtml_invalid.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual(
            {
                'http://example.com/image.png',
                'http://example.com/script.js',
            },
            inline_urls
        )
        self.assertEqual(
            {
                'http://example.com/link'
            },
            linked_urls
        )

    def test_html_soup(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['Refresh'] = 'yes'

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples', 'soup.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual(
            {'http://example.com/ABOUTM~1.JPG'},
            inline_urls
        )
        self.assertEqual(
            {
                'http://example.com/BLOG',
                'http://example.com/web ring/Join.htm',
            },
            linked_urls
        )

    def test_html_krokozyabry(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['content-type'] = 'text/html; charset=KOI8-R'

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples',
                                          'krokozyabry.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual('koi8-r', scrape_info['encoding'])

        self.assertEqual(
            set(),
            inline_urls
        )
        self.assertEqual(
            {'http://example.com/Кракозябры'},
            linked_urls
        )

    def test_html_serious_bad_encoding(self):
        scraper = HTMLScraper(encoding_override='utf8')
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['content-type'] = 'text/html; charset=utf8'

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                'testing', 'samples', 'xkcd_1_evil.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)

        self.assertTrue(scrape_info)

    def test_html_encoding_lxml_name_mismatch(self):
        '''It should accept encoding names with underscore.'''
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['content-type'] = 'text/html; charset=EUC_KR'

        with wpull.util.reset_file_offset(response.body.content_file):
            response.body.content_file.write(
                '힖'.encode('euc_kr')
            )

        scrape_info = scraper.scrape(request, response)

        self.assertTrue(scrape_info)
        self.assertEqual('euc_kr', scrape_info['encoding'])

    def test_html_garbage(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')
        response.fields['content-type'] = 'text/html'

        with wpull.util.reset_file_offset(response.body.content_file):
            response.body.content_file.write(
                b'\x01\x00\x01\x00l~Z\xff\x0f`y\x80\x00p<\x7f'
                b'\xffndo\xff\xff-\x83{d\xec</\xfe\x80\x00\xb4Bo'
                b'\x7f\xff\xff\xffV\xc1\xff\x7f\xff7'
            )

        scrape_info = scraper.scrape(request, response)

        self.assertTrue(scrape_info)

    def _read_input_file_as_html(self):
        '''Read input file as HTML and return the links.'''
        scrape_info = HTMLScraper.scrape_file(
            self._args.input_file,
            encoding=self._args.local_encoding or 'utf-8'
        )
        links = itertools.chain(
            scrape_info['inline_urls'], scrape_info['linked_urls']
        )

        return links

    def test_html_wrong_charset(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples', 'kcna.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual('utf-16-le', scrape_info['encoding'])

        self.assertEqual(
            {
                'http://example.com/utm/__utm.js',
                'http://example.com/Knewskage.gif',
                'http://example.com/Lline.gif',
                'http://example.com/Sline.gif',
                'http://example.com/korean01.gif',
                'http://example.com/korean02.gif',
                'http://example.com/english01.gif',
                'http://example.com/english02.gif',
                'http://example.com/Tongsinkage.gif',
                'http://example.com/Knewskage.gif',
            },
            inline_urls
        )
        self.assertEqual(
            {
                'http://example.com/index-k.htm',
                'http://example.com/index-e.htm',
            },
            linked_urls
        )

    def test_html_not_quite_charset(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, '')

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                'testing', 'samples', 'videogame_top.htm')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertIn(
            'http://example.com/copyright_2001_2006_rtype.gif',
            inline_urls
        )
        self.assertIn(
            'http://www.geocities.jp/gamehouse_grindcrusher/',
            linked_urls
        )

    def convert_by_record(self, url_record):
        '''Convert using given URL Record.'''
        filename = url_record.filename

        if not os.path.exists(filename):
            return

        if url_record.link_type:
            if url_record.link_type not in ('css', 'html'):
                return
            else:
                link_type = url_record.link_type
        else:
            with open(filename, 'rb') as in_file:
                if HTMLScraper.is_supported(
                        file=in_file, url_info=url_record.url_info):
                    link_type = 'html'
                elif CSSScraper.is_supported(
                        file=in_file, url_info=url_record.url_info):
                    link_type = 'css'
                else:
                    link_type = None

        _logger.info(__(
            _('Converting links in file ‘{filename}’ (type={type}).'),
            filename=filename, type=link_type
        ))

        if self._backup_enabled:
            shutil.copy2(filename, filename + '.orig')

        temp_filename = filename + '-new'

        if link_type == 'css':
            self._css_converter.convert(
                filename, temp_filename, base_url=url_record.url)
        elif link_type == 'html':
            self._html_converter.convert(
                filename, temp_filename, base_url=url_record.url)
        else:
            raise Exception('Unknown link type.')

        os.remove(filename)
        os.rename(temp_filename, filename)

    def convert_by_record(self, url_record):
        '''Convert using given URL Record.'''
        filename = self._path_namer.get_filename(
            URLInfo.parse(url_record.url)
        )

        if not os.path.exists(filename):
            return

        if url_record.link_type:
            if url_record.link_type not in ('css', 'html'):
                return
            else:
                link_type = url_record.link_type
        else:
            with open(filename, 'rb') as in_file:
                if HTMLScraper.is_supported(
                in_file, url_info=url_record.url_info):
                    link_type = 'html'
                elif CSSScraper.is_supported(
                in_file, url_info=url_record.url_info):
                    link_type = 'css'
                else:
                    link_type = None

        _logger.info(
            _('Converting links in file ‘{filename}’ (type={type}).')\
            .format(filename=filename, type=link_type)
        )

        if self._backup_enabled:
            shutil.copy2(filename, filename + '.orig')

        if link_type == 'css':
            self._css_converter.convert(
                filename, filename, base_url=url_record.url)
        elif link_type == 'html':
            self._html_converter.convert(
                filename, filename, base_url=url_record.url)

    def test_html_scraper_links(self):
        scraper = HTMLScraper()
        request = Request.new('http://example.com/')
        response = Response('HTTP/1.0', 200, 'OK')
        response.fields['Refresh'] = '3; url=header_refresh.html'

        with wpull.util.reset_file_offset(response.body.content_file):
            html_file_path = os.path.join(os.path.dirname(__file__),
                                          'testing', 'samples',
                                          'many_urls.html')
            with open(html_file_path, 'rb') as in_file:
                shutil.copyfileobj(in_file, response.body.content_file)

        scrape_info = scraper.scrape(request, response)
        inline_urls = scrape_info['inline_urls']
        linked_urls = scrape_info['linked_urls']

        self.assertEqual('ascii', scrape_info['encoding'])

        self.assertEqual({
            'http://example.com/style_import_url.css',
            'http://example.com/style_import_quote_url.css',
            'http://example.com/style_single_quote_import.css',
            'http://example.com/style_double_quote_import.css',
            'http://example.com/link_href.css',
            'http://example.com/script.js',
            'http://example.com/body_background.png',
            'http://example.com/images/table_background.png',
            'http://example.com/images/td_background.png',
            'http://example.com/images/th_background.png',
            'http://example.com/style_url1.png',
            'http://example.com/style_url2.png',
            'http://example.com/applet/',  # returned by lxml
            'http://example.com/applet/applet_code.class',
            'http://example.com/applet/applet_src.class',
            'http://example.com/bgsound.mid',
            'http://example.com/audio_src.wav',
            'http://example.net/source_src.wav',
            'http://example.com/embed_src.mov',
            'http://example.com/fig_src.png',
            'http://example.com/frame_src.html',
            'http://example.com/iframe_src.html',
            'http://example.com/img_href.png',
            'http://example.com/img_lowsrc.png',
            'http://example.com/img_src.png',
            'http://example.com/img_data.png',
            'http://example.com/input_src.png',
            'http://example.com/layer_src.png',
            'http://example.com/object/',  # returned by lxml
            'http://example.com/object/object_data.swf',
            'http://example.com/object/object_archive.dat',
            'http://example.com/param_ref_value.php',
            'http://example.com/overlay_src.html',
            'http://example.com/script_variable.png',
            },
            inline_urls
        )
        self.assertEqual({
            'http://example.net/soup.html',
            'http://example.com/a_href.html',
            'http://example.com/area_href.html',
            'http://example.com/frame_src.html',
            'http://example.com/embed_href.html',
            'http://example.com/embed_src.mov',
            'http://example.com/form_action.html',
            'http://example.com/iframe_src.html',
            'http://example.com/layer_src.png',
            'http://example.com/overlay_src.html',
            'ftp://ftp.protocol.invalid/',
            'mailto:[email protected]',
            'http://a-double-slash.example',
            'http://example.com/header_refresh.html',
            'https://[2001:db8:85a3:8d3:1319:8a2e:370:7348]:8080/ipv6',
            'http://example.com/document_write.html',
            'http://example.com/http_document_write.html',
            'http://example.com/http_document_write2.html',
            'http://example.com/http document write.html',
            'http://example.com/script_variable.html',
            'http://example.com/http_script_variable.html',
            'https://example.com/https_script_variable.html',
            'ftp://example.com/ftp_script_variable.html',
            'http://example.com/end_dir_script_variable/',
            'http://example.com/start_dir_script_variable',
            'http://example.com/../relative_dir_script_variable',
            'http://example.com/script_json.html',
            'http://example.com/http_script_json.html?a=b',
            'http://example.com/a_javascript_link.html',
            'http://example.com/a_onclick_link.html',
            },
            linked_urls
        )

        for url in inline_urls | linked_urls:
            self.assertIsInstance(url, str)