# -*- coding: utf-8 -*- """ Read More Link =========================== This plugin inserts an inline "read more" or "continue" link into the last html element of the object summary. For more information, please visit: http://vuongnguyen.com/creating-inline-read-more-link-python-pelican-lxml.html """ from pelican import signals, contents from pelican.utils import truncate_html_words try: from lxml.html import fragment_fromstring, fragments_fromstring, tostring from lxml.etree import ParserError except ImportError: raise Exception("Unable to find lxml. To use READ_MORE_LINK, you need lxml") def insert_into_last_element(html, element): """ function to insert an html element into another html fragment example: html = '

paragraph1

paragraph2...

' element = 'read more' ---> '

paragraph1

paragraph2...read more

' """ try: item = fragment_fromstring(element) except ParserError, TypeError: item = fragment_fromstring('') try: doc = fragments_fromstring(html) doc[-1].append(item) return ''.join(tostring(e) for e in doc) except ParserError, TypeError: return '' def insert_read_more_link(instance): """ Insert an inline "read more" link into the last element of the summary :param instance: :return: """ # only deals with Article type if type(instance) != contents.Article: return SUMMARY_MAX_LENGTH = instance.settings.get('SUMMARY_MAX_LENGTH') READ_MORE_LINK = instance.settings.get('READ_MORE_LINK', None) READ_MORE_LINK_FORMAT = instance.settings.get('READ_MORE_LINK_FORMAT', '{text}') if not (SUMMARY_MAX_LENGTH and READ_MORE_LINK and READ_MORE_LINK_FORMAT): return if hasattr(instance, '_summary') and instance._summary: summary = instance._summary else: summary = truncate_html_words(instance.content, SUMMARY_MAX_LENGTH) if summary