233 lines
7.7 KiB
Python
233 lines
7.7 KiB
Python
# -*- coding: utf-8 -*-
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'''
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Sitemap
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-------
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The sitemap plugin generates plain-text or XML sitemaps.
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'''
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from __future__ import unicode_literals
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import collections
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import os.path
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from datetime import datetime
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from logging import warning, info
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from codecs import open
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from pelican import signals, contents
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from pelican.utils import get_date
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TXT_HEADER = """{0}/index.html
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{0}/archives.html
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{0}/tags.html
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{0}/categories.html
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"""
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XML_HEADER = """<?xml version="1.0" encoding="utf-8"?>
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<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"
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xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
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"""
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XML_URL = """
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<url>
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<loc>{0}/{1}</loc>
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<lastmod>{2}</lastmod>
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<changefreq>{3}</changefreq>
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<priority>{4}</priority>
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</url>
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"""
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XML_FOOTER = """
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</urlset>
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"""
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def format_date(date):
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if date.tzinfo:
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tz = date.strftime('%s')
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tz = tz[:-2] + ':' + tz[-2:]
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else:
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tz = "-00:00"
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return date.strftime("%Y-%m-%dT%H:%M:%S") + tz
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class SitemapGenerator(object):
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def __init__(self, context, settings, path, theme, output_path, *null):
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self.output_path = output_path
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self.context = context
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self.now = datetime.now()
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self.siteurl = settings.get('SITEURL')
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self.format = 'xml'
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self.changefreqs = {
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'articles': 'monthly',
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'indexes': 'daily',
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'pages': 'monthly'
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}
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self.priorities = {
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'articles': 0.5,
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'indexes': 0.5,
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'pages': 0.5
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}
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config = settings.get('SITEMAP', {})
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if not isinstance(config, dict):
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warning("sitemap plugin: the SITEMAP setting must be a dict")
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else:
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fmt = config.get('format')
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pris = config.get('priorities')
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chfreqs = config.get('changefreqs')
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if fmt not in ('xml', 'txt'):
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warning("sitemap plugin: SITEMAP['format'] must be `txt' or `xml'")
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warning("sitemap plugin: Setting SITEMAP['format'] on `xml'")
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elif fmt == 'txt':
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self.format = fmt
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return
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valid_keys = ('articles', 'indexes', 'pages')
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valid_chfreqs = ('always', 'hourly', 'daily', 'weekly', 'monthly',
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'yearly', 'never')
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if isinstance(pris, dict):
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# We use items for Py3k compat. .iteritems() otherwise
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for k, v in pris.items():
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if k in valid_keys and not isinstance(v, (int, float)):
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default = self.priorities[k]
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warning("sitemap plugin: priorities must be numbers")
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warning("sitemap plugin: setting SITEMAP['priorities']"
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"['{0}'] on {1}".format(k, default))
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pris[k] = default
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self.priorities.update(pris)
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elif pris is not None:
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warning("sitemap plugin: SITEMAP['priorities'] must be a dict")
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warning("sitemap plugin: using the default values")
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if isinstance(chfreqs, dict):
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# .items() for py3k compat.
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for k, v in chfreqs.items():
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if k in valid_keys and v not in valid_chfreqs:
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default = self.changefreqs[k]
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warning("sitemap plugin: invalid changefreq `{0}'".format(v))
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warning("sitemap plugin: setting SITEMAP['changefreqs']"
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"['{0}'] on '{1}'".format(k, default))
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chfreqs[k] = default
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self.changefreqs.update(chfreqs)
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elif chfreqs is not None:
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warning("sitemap plugin: SITEMAP['changefreqs'] must be a dict")
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warning("sitemap plugin: using the default values")
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def write_url(self, page, fd):
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if getattr(page, 'status', 'published') != 'published':
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return
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page_path = os.path.join(self.output_path, page.save_as)
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if not os.path.exists(page_path):
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return
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lastdate = getattr(page, 'date', self.now)
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try:
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lastdate = self.get_date_modified(page, lastdate)
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except ValueError:
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warning("sitemap plugin: " + page.save_as + " has invalid modification date,")
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warning("sitemap plugin: using date value as lastmod.")
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lastmod = format_date(lastdate)
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if isinstance(page, contents.Article):
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pri = self.priorities['articles']
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chfreq = self.changefreqs['articles']
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elif isinstance(page, contents.Page):
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pri = self.priorities['pages']
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chfreq = self.changefreqs['pages']
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else:
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pri = self.priorities['indexes']
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chfreq = self.changefreqs['indexes']
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if self.format == 'xml':
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fd.write(XML_URL.format(self.siteurl, page.url, lastmod, chfreq, pri))
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else:
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fd.write(self.siteurl + '/' + page.url + '\n')
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def get_date_modified(self, page, default):
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if hasattr(page, 'modified'):
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if isinstance(page.modified, datetime):
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return page.modified
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return get_date(page.modified)
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else:
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return default
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def set_url_wrappers_modification_date(self, wrappers):
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for (wrapper, articles) in wrappers:
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lastmod = datetime.min
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for article in articles:
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lastmod = max(lastmod, article.date)
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try:
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modified = self.get_date_modified(article, datetime.min);
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lastmod = max(lastmod, modified)
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except ValueError:
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# Supressed: user will be notified.
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pass
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setattr(wrapper, 'modified', str(lastmod))
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def generate_output(self, writer):
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path = os.path.join(self.output_path, 'sitemap.{0}'.format(self.format))
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pages = self.context['pages'] + self.context['articles'] \
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+ [ c for (c, a) in self.context['categories']] \
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+ [ t for (t, a) in self.context['tags']] \
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+ [ a for (a, b) in self.context['authors']]
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self.set_url_wrappers_modification_date(self.context['categories'])
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self.set_url_wrappers_modification_date(self.context['tags'])
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self.set_url_wrappers_modification_date(self.context['authors'])
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for article in self.context['articles']:
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pages += article.translations
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info('writing {0}'.format(path))
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with open(path, 'w', encoding='utf-8') as fd:
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if self.format == 'xml':
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fd.write(XML_HEADER)
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else:
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fd.write(TXT_HEADER.format(self.siteurl))
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FakePage = collections.namedtuple('FakePage',
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['status',
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'date',
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'url',
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'save_as'])
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for standard_page_url in ['index.html',
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'archives.html',
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'tags.html',
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'categories.html']:
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fake = FakePage(status='published',
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date=self.now,
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url=standard_page_url,
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save_as=standard_page_url)
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self.write_url(fake, fd)
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for page in pages:
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self.write_url(page, fd)
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if self.format == 'xml':
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fd.write(XML_FOOTER)
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def get_generators(generators):
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return SitemapGenerator
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def register():
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signals.get_generators.connect(get_generators)
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