diff --git a/COPYRIGHT b/COPYRIGHT index cb01503bd86f..c3dff8ab6f66 100644 --- a/COPYRIGHT +++ b/COPYRIGHT @@ -28,6 +28,12 @@ License: other are permitted in any medium without royalty provided the copyright notice and this notice are preserved. +Files: src/calibre/ebooks/readability/* +Copyright: Unknown +License: Apache 2.0 + The full text of the Apache 2.0 license is available at: + http://www.apache.org/licenses/LICENSE-2.0 + Files: /src/cherrypy/* Copyright: Copyright (c) 2004-2007, CherryPy Team (team@cherrypy.org) Copyright: Copyright (C) 2005, Tiago Cogumbreiro diff --git a/recipes/hackernews.recipe b/recipes/hackernews.recipe new file mode 100644 index 000000000000..846c302a6ee4 --- /dev/null +++ b/recipes/hackernews.recipe @@ -0,0 +1,90 @@ +#!/usr/bin/env python + +__license__ = 'GPL v3' +''' +Hacker News +''' +from calibre.web.feeds.news import BasicNewsRecipe +from calibre.ptempfile import PersistentTemporaryFile +from urlparse import urlparse + +class HackerNews(BasicNewsRecipe): + title = 'Hacker News' + __author__ = 'Tom Scholl' + description = u'Hacker News, run by Y Combinator. Anything that good hackers would find interesting, with a focus on programming and startups.' + publisher = 'Y Combinator' + category = 'news, programming, it, technology' + masthead_url = 'http://i55.tinypic.com/2u6io76.png' + cover_url = 'http://i55.tinypic.com/2u6io76.png' + delay = 1 + max_articles_per_feed = 30 + use_embedded_content = False + no_stylesheets = True + encoding = 'utf-8' + language = 'en' + requires_version = (0,8,16) + + feeds = [ + (u'Hacker News', 'http://news.ycombinator.com/rss') + ] + + temp_files = [] + articles_are_obfuscated = True + + def get_readable_content(self, url): + self.log('get_readable_content(' + url + ')') + br = self.get_browser() + f = br.open(url) + html = f.read() + f.close() + + data = self.extract_readable_article(html, url) + article_html = data[0] + extracted_title = data[1] + article_html = u'' + extracted_title + u' (' + self.prettyify_url(url) + u')
' + article_html + return u'' + extracted_title + u'' + article_html + u'' + + def get_hn_content(self, url): + self.log('get_hn_content(' + url + ')') + # this could be improved + br = self.get_browser() + f = br.open(url) + html = f.read() + f.close() + return html + + def get_obfuscated_article(self, url): + if url.startswith('http://news.ycombinator.com'): + content = self.get_hn_content(url) + else: + # TODO: use content-type header instead of url + is_image = False + for ext in ['.jpg', '.png', '.svg', '.gif', '.jpeg', '.tiff', '.bmp',]: + if url.endswith(ext): + is_image = True + break + + if is_image: + self.log('using image_content (' + url + ')') + content = u'' + else: + content = self.get_readable_content(url) + + self.temp_files.append(PersistentTemporaryFile('_fa.html')) + self.temp_files[-1].write(content) + self.temp_files[-1].close() + return self.temp_files[-1].name + + def is_link_wanted(self, url, tag): + if url.endswith('.pdf'): + return False + return True + + def prettyify_url(self, url): + return urlparse(url).hostname + + def populate_article_metadata(self, article, soup, first): + article.text_summary = self.prettyify_url(article.url) + article.summary = article.text_summary + + diff --git a/src/calibre/ebooks/readability/README.txt b/src/calibre/ebooks/readability/README.txt new file mode 100644 index 000000000000..06fa9719bba0 --- /dev/null +++ b/src/calibre/ebooks/readability/README.txt @@ -0,0 +1,37 @@ +This code is under the Apache License 2.0. http://www.apache.org/licenses/LICENSE-2.0 + +This is a python port of a ruby port of arc90's readability project, taken +from https://github.com/buriy/python-readability + +The original readability project: +http://lab.arc90.com/experiments/readability/ + +In few words, +Given a html document, it pulls out the main body text and cleans it up. +It also can clean up title based on latest readability.js code. + +Based on: + - Latest readability.js ( https://github.com/MHordecki/readability-redux/blob/master/readability/readability.js ) + - Ruby port by starrhorne and iterationlabs + - Python port by gfxmonk ( https://github.com/gfxmonk/python-readability , based on BeautifulSoup ) + - Decruft effort to move to lxml ( http://www.minvolai.com/blog/decruft-arc90s-readability-in-python/ ) + - "BR to P" fix from readability.js which improves quality for smaller texts. + - Github users contributions. + +Installation:: + + easy_install readability-lxml + or + pip install readability-lxml + +Usage:: + + from readability.readability import Document + import urllib + html = urllib.urlopen(url).read() + readable_article = Document(html).summary() + readable_title = Document(html).short_title() + +Command-line usage:: + + python -m readability.readability -u http://pypi.python.org/pypi/readability-lxml diff --git a/src/calibre/ebooks/readability/__init__.py b/src/calibre/ebooks/readability/__init__.py new file mode 100644 index 000000000000..8b137891791f --- /dev/null +++ b/src/calibre/ebooks/readability/__init__.py @@ -0,0 +1 @@ + diff --git a/src/calibre/ebooks/readability/cleaners.py b/src/calibre/ebooks/readability/cleaners.py new file mode 100644 index 000000000000..9b158c52485f --- /dev/null +++ b/src/calibre/ebooks/readability/cleaners.py @@ -0,0 +1,32 @@ +# strip out a set of nuisance html attributes that can mess up rendering in RSS feeds +import re +from lxml.html.clean import Cleaner + +bad_attrs = ['width', 'height', 'style', '[-a-z]*color', 'background[-a-z]*', 'on*'] +single_quoted = "'[^']+'" +double_quoted = '"[^"]+"' +non_space = '[^ "\'>]+' +htmlstrip = re.compile("<" # open + "([^>]+) " # prefix + "(?:%s) *" % ('|'.join(bad_attrs),) + # undesirable attributes + '= *(?:%s|%s|%s)' % (non_space, single_quoted, double_quoted) + # value + "([^>]*)" # postfix + ">" # end +, re.I) + +def clean_attributes(html): + while htmlstrip.search(html): + html = htmlstrip.sub('<\\1\\2>', html) + return html + +def normalize_spaces(s): + if not s: return '' + """replace any sequence of whitespace + characters with a single space""" + return ' '.join(s.split()) + +html_cleaner = Cleaner(scripts=True, javascript=True, comments=True, + style=True, links=True, meta=False, add_nofollow=False, + page_structure=False, processing_instructions=True, embedded=False, + frames=False, forms=False, annoying_tags=False, remove_tags=None, + remove_unknown_tags=False, safe_attrs_only=False) diff --git a/src/calibre/ebooks/readability/debug.py b/src/calibre/ebooks/readability/debug.py new file mode 100644 index 000000000000..a5e644d8cc97 --- /dev/null +++ b/src/calibre/ebooks/readability/debug.py @@ -0,0 +1,25 @@ +def save_to_file(text, filename): + f = open(filename, 'wt') + f.write('') + f.write(text.encode('utf-8')) + f.close() + +uids = {} +def describe(node, depth=2): + if not hasattr(node, 'tag'): + return "[%s]" % type(node) + name = node.tag + if node.get('id', ''): name += '#'+node.get('id') + if node.get('class', ''): + name += '.' + node.get('class').replace(' ','.') + if name[:4] in ['div#', 'div.']: + name = name[3:] + if name in ['tr', 'td', 'div', 'p']: + if not node in uids: + uid = uids[node] = len(uids)+1 + else: + uid = uids.get(node) + name += "%02d" % (uid) + if depth and node.getparent() is not None: + return name+' - '+describe(node.getparent(), depth-1) + return name diff --git a/src/calibre/ebooks/readability/htmls.py b/src/calibre/ebooks/readability/htmls.py new file mode 100644 index 000000000000..11f9adebb9c1 --- /dev/null +++ b/src/calibre/ebooks/readability/htmls.py @@ -0,0 +1,103 @@ +import re + +from lxml.html import tostring +import lxml.html + +from calibre.ebooks.readability.cleaners import normalize_spaces, clean_attributes +from calibre.ebooks.chardet import xml_to_unicode + +def build_doc(page): + page_unicode = xml_to_unicode(page, strip_encoding_pats=True)[0] + doc = lxml.html.document_fromstring(page_unicode) + return doc + +def js_re(src, pattern, flags, repl): + return re.compile(pattern, flags).sub(src, repl.replace('$', '\\')) + + +def normalize_entities(cur_title): + entities = { + u'\u2014':'-', + u'\u2013':'-', + u'—': '-', + u'–': '-', + u'\u00A0': ' ', + u'\u00AB': '"', + u'\u00BB': '"', + u'"': '"', + } + for c, r in entities.iteritems(): + if c in cur_title: + cur_title = cur_title.replace(c, r) + + return cur_title + +def norm_title(title): + return normalize_entities(normalize_spaces(title)) + +def get_title(doc): + title = doc.find('.//title').text + if not title: + return '[no-title]' + + return norm_title(title) + +def add_match(collection, text, orig): + text = norm_title(text) + if len(text.split()) >= 2 and len(text) >= 15: + if text.replace('"', '') in orig.replace('"', ''): + collection.add(text) + +def shorten_title(doc): + title = doc.find('.//title').text + if not title: + return '' + + title = orig = norm_title(title) + + candidates = set() + + for item in ['.//h1', './/h2', './/h3']: + for e in list(doc.iterfind(item)): + if e.text: + add_match(candidates, e.text, orig) + if e.text_content(): + add_match(candidates, e.text_content(), orig) + + for item in ['#title', '#head', '#heading', '.pageTitle', '.news_title', '.title', '.head', '.heading', '.contentheading', '.small_header_red']: + for e in doc.cssselect(item): + if e.text: + add_match(candidates, e.text, orig) + if e.text_content(): + add_match(candidates, e.text_content(), orig) + + if candidates: + title = sorted(candidates, key=len)[-1] + else: + for delimiter in [' | ', ' - ', ' :: ', ' / ']: + if delimiter in title: + parts = orig.split(delimiter) + if len(parts[0].split()) >= 4: + title = parts[0] + break + elif len(parts[-1].split()) >= 4: + title = parts[-1] + break + else: + if ': ' in title: + parts = orig.split(': ') + if len(parts[-1].split()) >= 4: + title = parts[-1] + else: + title = orig.split(': ', 1)[1] + + if not 15 < len(title) < 150: + return orig + + return title + +def get_body(doc): + [ elem.drop_tree() for elem in doc.xpath('.//script | .//link | .//style') ] + raw_html = unicode(tostring(doc.body or doc)) + return clean_attributes(raw_html) + diff --git a/src/calibre/ebooks/readability/readability.py b/src/calibre/ebooks/readability/readability.py new file mode 100644 index 000000000000..583c84fb5884 --- /dev/null +++ b/src/calibre/ebooks/readability/readability.py @@ -0,0 +1,508 @@ +import re, sys +from collections import defaultdict + +from lxml.etree import tostring, tounicode +from lxml.html import fragment_fromstring, document_fromstring + +from calibre.ebooks.readability.htmls import build_doc, get_body, get_title, shorten_title +from calibre.ebooks.readability.cleaners import html_cleaner, clean_attributes + + + +REGEXES = { + 'unlikelyCandidatesRe': re.compile('combx|comment|community|disqus|extra|foot|header|menu|remark|rss|shoutbox|sidebar|sponsor|ad-break|agegate|pagination|pager|popup|tweet|twitter',re.I), + 'okMaybeItsACandidateRe': re.compile('and|article|body|column|main|shadow',re.I), + 'positiveRe': re.compile('article|body|content|entry|hentry|main|page|pagination|post|text|blog|story',re.I), + 'negativeRe': re.compile('combx|comment|com-|contact|foot|footer|footnote|masthead|media|meta|outbrain|promo|related|scroll|shoutbox|sidebar|sponsor|shopping|tags|tool|widget',re.I), + 'divToPElementsRe': re.compile('<(a|blockquote|dl|div|img|ol|p|pre|table|ul)',re.I), + #'replaceBrsRe': re.compile('(]*>[ \n\r\t]*){2,}',re.I), + #'replaceFontsRe': re.compile('<(\/?)font[^>]*>',re.I), + #'trimRe': re.compile('^\s+|\s+$/'), + #'normalizeRe': re.compile('\s{2,}/'), + #'killBreaksRe': re.compile('((\s| ?)*){1,}/'), + #'videoRe': re.compile('http:\/\/(www\.)?(youtube|vimeo)\.com', re.I), + #skipFootnoteLink: /^\s*(\[?[a-z0-9]{1,2}\]?|^|edit|citation needed)\s*$/i, +} + +def describe(node, depth=1): + if not hasattr(node, 'tag'): + return "[%s]" % type(node) + name = node.tag + if node.get('id', ''): name += '#'+node.get('id') + if node.get('class', ''): + name += '.' + node.get('class').replace(' ','.') + if name[:4] in ['div#', 'div.']: + name = name[3:] + if depth and node.getparent() is not None: + return name+' - '+describe(node.getparent(), depth-1) + return name + +def to_int(x): + if not x: return None + x = x.strip() + if x.endswith('px'): + return int(x[:-2]) + if x.endswith('em'): + return int(x[:-2]) * 12 + return int(x) + +def clean(text): + text = re.sub('\s*\n\s*', '\n', text) + text = re.sub('[ \t]{2,}', ' ', text) + return text.strip() + +def text_length(i): + return len(clean(i.text_content() or "")) + +class Unparseable(ValueError): + pass + +class Document: + TEXT_LENGTH_THRESHOLD = 25 + RETRY_LENGTH = 250 + + def __init__(self, input, log, **options): + self.input = input + self.options = defaultdict(lambda: None) + for k, v in options.items(): + self.options[k] = v + self.html = None + self.log = log + + def _html(self, force=False): + if force or self.html is None: + self.html = self._parse(self.input) + return self.html + + def _parse(self, input): + doc = build_doc(input) + doc = html_cleaner.clean_html(doc) + base_href = self.options['url'] + if base_href: + doc.make_links_absolute(base_href, resolve_base_href=True) + else: + doc.resolve_base_href() + return doc + + def content(self): + return get_body(self._html(True)) + + def title(self): + return get_title(self._html(True)) + + def short_title(self): + return shorten_title(self._html(True)) + + def summary(self): + try: + ruthless = True + while True: + self._html(True) + + for i in self.tags(self.html, 'script', 'style'): + i.drop_tree() + for i in self.tags(self.html, 'body'): + i.set('id', 'readabilityBody') + if ruthless: + self.remove_unlikely_candidates() + self.transform_misused_divs_into_paragraphs() + candidates = self.score_paragraphs() + + best_candidate = self.select_best_candidate(candidates) + if best_candidate: + article = self.get_article(candidates, best_candidate) + else: + if ruthless: + self.log.debug("ruthless removal did not work. ") + ruthless = False + self.debug("ended up stripping too much - going for a safer _parse") + # try again + continue + else: + self.log.debug("Ruthless and lenient parsing did not work. Returning raw html") + article = self.html.find('body') + if article is None: + article = self.html + + cleaned_article = self.sanitize(article, candidates) + of_acceptable_length = len(cleaned_article or '') >= (self.options['retry_length'] or self.RETRY_LENGTH) + if ruthless and not of_acceptable_length: + ruthless = False + continue # try again + else: + return cleaned_article + except StandardError, e: + self.log.exception('error getting summary: ' ) + raise Unparseable(str(e)), None, sys.exc_info()[2] + + def get_article(self, candidates, best_candidate): + # Now that we have the top candidate, look through its siblings for content that might also be related. + # Things like preambles, content split by ads that we removed, etc. + + sibling_score_threshold = max([10, best_candidate['content_score'] * 0.2]) + output = document_fromstring('
') + best_elem = best_candidate['elem'] + for sibling in best_elem.getparent().getchildren(): + #if isinstance(sibling, NavigableString): continue#in lxml there no concept of simple text + append = False + if sibling is best_elem: + append = True + sibling_key = sibling #HashableElement(sibling) + if sibling_key in candidates and candidates[sibling_key]['content_score'] >= sibling_score_threshold: + append = True + + if sibling.tag == "p": + link_density = self.get_link_density(sibling) + node_content = sibling.text or "" + node_length = len(node_content) + + if node_length > 80 and link_density < 0.25: + append = True + elif node_length < 80 and link_density == 0 and re.search('\.( |$)', node_content): + append = True + + if append: + output.append(sibling) + #if output is not None: + # output.append(best_elem) + return output + + def select_best_candidate(self, candidates): + sorted_candidates = sorted(candidates.values(), key=lambda x: x['content_score'], reverse=True) + for candidate in sorted_candidates[:5]: + elem = candidate['elem'] + self.debug("Top 5 : %6.3f %s" % (candidate['content_score'], describe(elem))) + + if len(sorted_candidates) == 0: + return None + + best_candidate = sorted_candidates[0] + return best_candidate + + + def get_link_density(self, elem): + link_length = 0 + for i in elem.findall(".//a"): + link_length += text_length(i) + #if len(elem.findall(".//div") or elem.findall(".//p")): + # link_length = link_length + total_length = text_length(elem) + return float(link_length) / max(total_length, 1) + + def score_paragraphs(self, ): + MIN_LEN = self.options.get('min_text_length', self.TEXT_LENGTH_THRESHOLD) + candidates = {} + #self.debug(str([describe(node) for node in self.tags(self.html, "div")])) + + ordered = [] + for elem in self.tags(self.html, "p", "pre", "td"): + parent_node = elem.getparent() + if parent_node is None: + continue + grand_parent_node = parent_node.getparent() + + inner_text = clean(elem.text_content() or "") + inner_text_len = len(inner_text) + + # If this paragraph is less than 25 characters, don't even count it. + if inner_text_len < MIN_LEN: + continue + + if parent_node not in candidates: + candidates[parent_node] = self.score_node(parent_node) + ordered.append(parent_node) + + if grand_parent_node is not None and grand_parent_node not in candidates: + candidates[grand_parent_node] = self.score_node(grand_parent_node) + ordered.append(grand_parent_node) + + content_score = 1 + content_score += len(inner_text.split(',')) + content_score += min((inner_text_len / 100), 3) + #if elem not in candidates: + # candidates[elem] = self.score_node(elem) + + #WTF? candidates[elem]['content_score'] += content_score + candidates[parent_node]['content_score'] += content_score + if grand_parent_node is not None: + candidates[grand_parent_node]['content_score'] += content_score / 2.0 + + # Scale the final candidates score based on link density. Good content should have a + # relatively small link density (5% or less) and be mostly unaffected by this operation. + for elem in ordered: + candidate = candidates[elem] + ld = self.get_link_density(elem) + score = candidate['content_score'] + self.debug("Candid: %6.3f %s link density %.3f -> %6.3f" % (score, describe(elem), ld, score*(1-ld))) + candidate['content_score'] *= (1 - ld) + + return candidates + + def class_weight(self, e): + weight = 0 + if e.get('class', None): + if REGEXES['negativeRe'].search(e.get('class')): + weight -= 25 + + if REGEXES['positiveRe'].search(e.get('class')): + weight += 25 + + if e.get('id', None): + if REGEXES['negativeRe'].search(e.get('id')): + weight -= 25 + + if REGEXES['positiveRe'].search(e.get('id')): + weight += 25 + + return weight + + def score_node(self, elem): + content_score = self.class_weight(elem) + name = elem.tag.lower() + if name == "div": + content_score += 5 + elif name in ["pre", "td", "blockquote"]: + content_score += 3 + elif name in ["address", "ol", "ul", "dl", "dd", "dt", "li", "form"]: + content_score -= 3 + elif name in ["h1", "h2", "h3", "h4", "h5", "h6", "th"]: + content_score -= 5 + return { + 'content_score': content_score, + 'elem': elem + } + + def debug(self, *a): + #if self.options['debug']: + self.log.debug(*a) + + def remove_unlikely_candidates(self): + for elem in self.html.iter(): + s = "%s %s" % (elem.get('class', ''), elem.get('id', '')) + #self.debug(s) + if REGEXES['unlikelyCandidatesRe'].search(s) and (not REGEXES['okMaybeItsACandidateRe'].search(s)) and elem.tag != 'body': + self.debug("Removing unlikely candidate - %s" % describe(elem)) + elem.drop_tree() + + def transform_misused_divs_into_paragraphs(self): + for elem in self.tags(self.html, 'div'): + # transform
s that do not contain other block elements into

s + if not REGEXES['divToPElementsRe'].search(unicode(''.join(map(tostring, list(elem))))): + #self.debug("Altering %s to p" % (describe(elem))) + elem.tag = "p" + #print "Fixed element "+describe(elem) + + for elem in self.tags(self.html, 'div'): + if elem.text and elem.text.strip(): + p = fragment_fromstring('

') + p.text = elem.text + elem.text = None + elem.insert(0, p) + #print "Appended "+tounicode(p)+" to "+describe(elem) + + for pos, child in reversed(list(enumerate(elem))): + if child.tail and child.tail.strip(): + p = fragment_fromstring('

') + p.text = child.tail + child.tail = None + elem.insert(pos + 1, p) + #print "Inserted "+tounicode(p)+" to "+describe(elem) + if child.tag == 'br': + #print 'Dropped
at '+describe(elem) + child.drop_tree() + + def tags(self, node, *tag_names): + for tag_name in tag_names: + for e in node.findall('.//%s' % tag_name): + yield e + + def reverse_tags(self, node, *tag_names): + for tag_name in tag_names: + for e in reversed(node.findall('.//%s' % tag_name)): + yield e + + def sanitize(self, node, candidates): + MIN_LEN = self.options.get('min_text_length', self.TEXT_LENGTH_THRESHOLD) + for header in self.tags(node, "h1", "h2", "h3", "h4", "h5", "h6"): + if self.class_weight(header) < 0 or self.get_link_density(header) > 0.33: + header.drop_tree() + + for elem in self.tags(node, "form", "iframe", "textarea"): + elem.drop_tree() + allowed = {} + # Conditionally clean s,
    s, and
    s + for el in self.reverse_tags(node, "table", "ul", "div"): + if el in allowed: + continue + weight = self.class_weight(el) + if el in candidates: + content_score = candidates[el]['content_score'] + #print '!',el, '-> %6.3f' % content_score + else: + content_score = 0 + tag = el.tag + + if weight + content_score < 0: + self.debug("Cleaned %s with score %6.3f and weight %-3s" % + (describe(el), content_score, weight, )) + el.drop_tree() + elif el.text_content().count(",") < 10: + counts = {} + for kind in ['p', 'img', 'li', 'a', 'embed', 'input']: + counts[kind] = len(el.findall('.//%s' %kind)) + counts["li"] -= 100 + + content_length = text_length(el) # Count the text length excluding any surrounding whitespace + link_density = self.get_link_density(el) + parent_node = el.getparent() + if parent_node is not None: + if parent_node in candidates: + content_score = candidates[parent_node]['content_score'] + else: + content_score = 0 + #if parent_node is not None: + #pweight = self.class_weight(parent_node) + content_score + #pname = describe(parent_node) + #else: + #pweight = 0 + #pname = "no parent" + to_remove = False + reason = "" + + #if el.tag == 'div' and counts["img"] >= 1: + # continue + if counts["p"] and counts["img"] > counts["p"]: + reason = "too many images (%s)" % counts["img"] + to_remove = True + elif counts["li"] > counts["p"] and tag != "ul" and tag != "ol": + reason = "more
  • s than

    s" + to_remove = True + elif counts["input"] > (counts["p"] / 3): + reason = "less than 3x

    s than s" + to_remove = True + elif content_length < (MIN_LEN) and (counts["img"] == 0 or counts["img"] > 2): + reason = "too short content length %s without a single image" % content_length + to_remove = True + elif weight < 25 and link_density > 0.2: + reason = "too many links %.3f for its weight %s" % (link_density, weight) + to_remove = True + elif weight >= 25 and link_density > 0.5: + reason = "too many links %.3f for its weight %s" % (link_density, weight) + to_remove = True + elif (counts["embed"] == 1 and content_length < 75) or counts["embed"] > 1: + reason = "s with too short content length, or too many s" + to_remove = True +# if el.tag == 'div' and counts['img'] >= 1 and to_remove: +# imgs = el.findall('.//img') +# valid_img = False +# self.debug(tounicode(el)) +# for img in imgs: +# +# height = img.get('height') +# text_length = img.get('text_length') +# self.debug ("height %s text_length %s" %(repr(height), repr(text_length))) +# if to_int(height) >= 100 or to_int(text_length) >= 100: +# valid_img = True +# self.debug("valid image" + tounicode(img)) +# break +# if valid_img: +# to_remove = False +# self.debug("Allowing %s" %el.text_content()) +# for desnode in self.tags(el, "table", "ul", "div"): +# allowed[desnode] = True + + #find x non empty preceding and succeeding siblings + i, j = 0, 0 + x = 1 + siblings = [] + for sib in el.itersiblings(): + #self.debug(sib.text_content()) + sib_content_length = text_length(sib) + if sib_content_length: + i =+ 1 + siblings.append(sib_content_length) + if i == x: + break + for sib in el.itersiblings(preceding=True): + #self.debug(sib.text_content()) + sib_content_length = text_length(sib) + if sib_content_length: + j =+ 1 + siblings.append(sib_content_length) + if j == x: + break + #self.debug(str(siblings)) + if siblings and sum(siblings) > 1000 : + to_remove = False + self.debug("Allowing %s" % describe(el)) + for desnode in self.tags(el, "table", "ul", "div"): + allowed[desnode] = True + + if to_remove: + self.debug("Cleaned %6.3f %s with weight %s cause it has %s." % + (content_score, describe(el), weight, reason)) + #print tounicode(el) + #self.debug("pname %s pweight %.3f" %(pname, pweight)) + el.drop_tree() + + for el in ([node] + [n for n in node.iter()]): + if not (self.options['attributes']): + #el.attrib = {} #FIXME:Checkout the effects of disabling this + pass + + return clean_attributes(tounicode(node)) + + +class HashableElement(): + def __init__(self, node): + self.node = node + self._path = None + + def _get_path(self): + if self._path is None: + reverse_path = [] + node = self.node + while node is not None: + node_id = (node.tag, tuple(node.attrib.items()), node.text) + reverse_path.append(node_id) + node = node.getparent() + self._path = tuple(reverse_path) + return self._path + path = property(_get_path) + + def __hash__(self): + return hash(self.path) + + def __eq__(self, other): + return self.path == other.path + + def __getattr__(self, tag): + return getattr(self.node, tag) + +def main(): + import logging + from optparse import OptionParser + parser = OptionParser(usage="%prog: [options] [file]") + parser.add_option('-v', '--verbose', action='store_true') + parser.add_option('-u', '--url', help="use URL instead of a local file") + (options, args) = parser.parse_args() + + if not (len(args) == 1 or options.url): + parser.print_help() + sys.exit(1) + logging.basicConfig(level=logging.INFO) + + file = None + if options.url: + import urllib + file = urllib.urlopen(options.url) + else: + file = open(args[0], 'rt') + enc = sys.__stdout__.encoding or 'utf-8' + try: + print Document(file.read(), debug=options.verbose).summary().encode(enc, 'replace') + finally: + file.close() + +if __name__ == '__main__': + main() diff --git a/src/calibre/web/feeds/news.py b/src/calibre/web/feeds/news.py index 1d513082f115..d7d9b0643a85 100644 --- a/src/calibre/web/feeds/news.py +++ b/src/calibre/web/feeds/news.py @@ -515,6 +515,16 @@ def index_to_soup(self, url_or_raw, raw=False): entity_to_unicode(match, encoding=enc))) return BeautifulSoup(_raw, markupMassage=massage) + def extract_readable_article(self, html, base_url): + ''' + Extracts main article content from 'html', cleans up and returns as a (article_html, extracted_title) tuple. + Based on the original readability algorithm by Arc90. + ''' + from calibre.ebooks.readability import readability + doc = readability.Document(html, self.log, url=base_url) + article_html = doc.summary() + extracted_title = doc.title() + return (article_html, extracted_title) def sort_index_by(self, index, weights): '''