# -*- coding: utf-8 -*- ''' Sitemap ------- The sitemap plugin generates plain-text or XML sitemaps. ''' from __future__ import unicode_literals import collections import os.path from datetime import datetime from logging import warning, info from codecs import open from pytz import timezone from pelican import signals, contents from pelican.utils import get_date TXT_HEADER = """{0}/index.html {0}/archives.html {0}/tags.html {0}/categories.html """ XML_HEADER = """ """ XML_URL = """ {0}/{1} {2} {3} {4} """ XML_FOOTER = """ """ def format_date(date): if date.tzinfo: tz = date.strftime('%s') tz = tz[:-2] + ':' + tz[-2:] else: tz = "-00:00" return date.strftime("%Y-%m-%dT%H:%M:%S") + tz class SitemapGenerator(object): def __init__(self, context, settings, path, theme, output_path, *null): self.output_path = output_path self.context = context self.now = datetime.now() self.siteurl = settings.get('SITEURL') self.default_timezone = settings.get('TIMEZONE', 'UTC') self.timezone = getattr(self, 'timezone', self.default_timezone) self.timezone = timezone(self.timezone) self.format = 'xml' self.changefreqs = { 'articles': 'monthly', 'indexes': 'daily', 'pages': 'monthly' } self.priorities = { 'articles': 0.5, 'indexes': 0.5, 'pages': 0.5 } config = settings.get('SITEMAP', {}) if not isinstance(config, dict): warning("sitemap plugin: the SITEMAP setting must be a dict") else: fmt = config.get('format') pris = config.get('priorities') chfreqs = config.get('changefreqs') if fmt not in ('xml', 'txt'): warning("sitemap plugin: SITEMAP['format'] must be `txt' or `xml'") warning("sitemap plugin: Setting SITEMAP['format'] on `xml'") elif fmt == 'txt': self.format = fmt return valid_keys = ('articles', 'indexes', 'pages') valid_chfreqs = ('always', 'hourly', 'daily', 'weekly', 'monthly', 'yearly', 'never') if isinstance(pris, dict): # We use items for Py3k compat. .iteritems() otherwise for k, v in pris.items(): if k in valid_keys and not isinstance(v, (int, float)): default = self.priorities[k] warning("sitemap plugin: priorities must be numbers") warning("sitemap plugin: setting SITEMAP['priorities']" "['{0}'] on {1}".format(k, default)) pris[k] = default self.priorities.update(pris) elif pris is not None: warning("sitemap plugin: SITEMAP['priorities'] must be a dict") warning("sitemap plugin: using the default values") if isinstance(chfreqs, dict): # .items() for py3k compat. for k, v in chfreqs.items(): if k in valid_keys and v not in valid_chfreqs: default = self.changefreqs[k] warning("sitemap plugin: invalid changefreq `{0}'".format(v)) warning("sitemap plugin: setting SITEMAP['changefreqs']" "['{0}'] on '{1}'".format(k, default)) chfreqs[k] = default self.changefreqs.update(chfreqs) elif chfreqs is not None: warning("sitemap plugin: SITEMAP['changefreqs'] must be a dict") warning("sitemap plugin: using the default values") def write_url(self, page, fd): if getattr(page, 'status', 'published') != 'published': return page_path = os.path.join(self.output_path, page.save_as) if not os.path.exists(page_path): return lastdate = getattr(page, 'date', self.now) try: lastdate = self.get_date_modified(page, lastdate) except ValueError: warning("sitemap plugin: " + page.save_as + " has invalid modification date,") warning("sitemap plugin: using date value as lastmod.") lastmod = format_date(lastdate) if isinstance(page, contents.Article): pri = self.priorities['articles'] chfreq = self.changefreqs['articles'] elif isinstance(page, contents.Page): pri = self.priorities['pages'] chfreq = self.changefreqs['pages'] else: pri = self.priorities['indexes'] chfreq = self.changefreqs['indexes'] if self.format == 'xml': fd.write(XML_URL.format(self.siteurl, page.url, lastmod, chfreq, pri)) else: fd.write(self.siteurl + '/' + page.url + '\n') def get_date_modified(self, page, default): if hasattr(page, 'modified'): if isinstance(page.modified, datetime): return page.modified return get_date(page.modified) else: return default def set_url_wrappers_modification_date(self, wrappers): for (wrapper, articles) in wrappers: lastmod = datetime.min.replace(tzinfo=self.timezone) for article in articles: lastmod = max(lastmod, article.date.replace(tzinfo=self.timezone)) try: modified = self.get_date_modified(article, datetime.min.replace(tzinfo=self.timezone)); lastmod = max(lastmod, modified) except ValueError: # Supressed: user will be notified. pass setattr(wrapper, 'modified', str(lastmod)) def generate_output(self, writer): path = os.path.join(self.output_path, 'sitemap.{0}'.format(self.format)) pages = self.context['pages'] + self.context['articles'] \ + [ c for (c, a) in self.context['categories']] \ + [ t for (t, a) in self.context['tags']] \ + [ a for (a, b) in self.context['authors']] self.set_url_wrappers_modification_date(self.context['categories']) self.set_url_wrappers_modification_date(self.context['tags']) self.set_url_wrappers_modification_date(self.context['authors']) for article in self.context['articles']: pages += article.translations info('writing {0}'.format(path)) with open(path, 'w', encoding='utf-8') as fd: if self.format == 'xml': fd.write(XML_HEADER) else: fd.write(TXT_HEADER.format(self.siteurl)) FakePage = collections.namedtuple('FakePage', ['status', 'date', 'url', 'save_as']) for standard_page_url in ['index.html', 'archives.html', 'tags.html', 'categories.html']: fake = FakePage(status='published', date=self.now, url=standard_page_url, save_as=standard_page_url) self.write_url(fake, fd) for page in pages: self.write_url(page, fd) if self.format == 'xml': fd.write(XML_FOOTER) def get_generators(generators): return SitemapGenerator def register(): signals.get_generators.connect(get_generators)