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sitemap.py
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sitemap.py
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# -*- coding: utf-8 -*-
from __future__ import unicode_literals
import collections
import os.path
from datetime import datetime
from logging import warning, info
from codecs import open
from pelican import signals, contents
TXT_HEADER = """{0}/index.html
{0}/archives.html
{0}/tags.html
{0}/categories.html
"""
XML_HEADER = """<?xml version="1.0" encoding="utf-8"?>
<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd"
xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
"""
XML_URL = """
<url>
<loc>{0}/{1}</loc>
<lastmod>{2}</lastmod>
<changefreq>{3}</changefreq>
<priority>{4}</priority>
</url>
"""
XML_FOOTER = """
</urlset>
"""
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.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):
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):
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.url)
if not os.path.exists(page_path):
return
lastmod = format_date(getattr(page, 'date', self.now))
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 + '/' + loc + '\n')
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']]
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'])
for standard_page_url in ['index.html',
'archives.html',
'tags.html',
'categories.html']:
fake = FakePage(status='published',
date=self.now,
url=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)