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+'''
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+Manage talks scheduling in a semantic way
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+'''
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+
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+
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+from __future__ import print_function
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+import os
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+import io
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+from functools import wraps
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+import logging
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+import re
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+import datetime
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+import shutil
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+import time
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+from copy import copy
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+import locale
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+from contextlib import contextmanager
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+from babel.dates import format_date, format_datetime, format_time
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+
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+import markdown
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+from docutils import nodes
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+from docutils.parsers.rst import directives, Directive
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+
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+from pelican import signals, generators
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+import jinja2
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+
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+pelican = None # This will be set during register()
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+
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+
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+
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+
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+def memoize(function):
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+ '''decorators to cache'''
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+ memo = {}
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+
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+ @wraps(function)
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+ def wrapper(*args):
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+ if args in memo:
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+ return memo[args]
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+ else:
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+ rv = function(*args)
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+ memo[args] = rv
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+ return rv
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+ return wrapper
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+
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+
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+@contextmanager
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+def setlocale(name):
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+ saved = locale.setlocale(locale.LC_ALL)
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+ try:
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+ yield locale.setlocale(locale.LC_ALL, name)
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+ finally:
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+ locale.setlocale(locale.LC_ALL, saved)
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+
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+
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+@memoize
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+def get_talk_names():
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+ return [name for name in os.listdir(pelican.settings['TALKS_PATH'])
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+ if not name.startswith('_') and
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+ get_talk_data(name) is not None
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+ ]
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+
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+
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+def all_talks():
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+ return [get_talk_data(tn) for tn in get_talk_names()]
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+
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+
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+def unique_attr(iterable, attr):
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+ return {x[attr] for x in iterable
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+ if attr in x}
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+
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+
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+@memoize
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+def get_global_data():
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+ fname = os.path.join(pelican.settings['TALKS_PATH'], 'meta.yaml')
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+ if not os.path.isfile(fname):
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+ return None
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+ with io.open(fname, encoding='utf8') as buf:
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+ try:
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+ data = yaml.load(buf)
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+ except Exception:
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+ logging.exception("Syntax error reading %s; skipping", fname)
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+ return None
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+ if data is None:
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+ return None
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+ if 'startdate' not in data:
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+ logging.error("Missing startdate in global data")
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+ data['startdate'] = datetime.datetime.now()
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+ return data
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+
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+
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+@memoize
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+def get_talk_data(talkname):
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+ fname = os.path.join(pelican.settings['TALKS_PATH'], talkname, 'meta.yaml')
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+ if not os.path.isfile(fname):
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+ return None
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+ with io.open(fname, encoding='utf8') as buf:
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+ try:
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+ data = yaml.load(buf)
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+ except:
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+ logging.exception("Syntax error reading %s; skipping", fname)
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+ return None
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+ if data is None:
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+ return None
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+ try:
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+ gridstep = pelican.settings['TALKS_GRID_STEP']
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+ if 'title' not in data:
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+ logging.warn("Talk <{}> has no `title` field".format(talkname))
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+ data['title'] = talkname
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+ if 'text' not in data:
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+ logging.warn("Talk <{}> has no `text` field".format(talkname))
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+ data['text'] = ''
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+ if 'duration' not in data:
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+ logging.info("Talk <{}> has no `duration` field (50min used)"
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+ .format(talkname))
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+ data['duration'] = 50
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+ data['duration'] = int(data['duration'])
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+ if data['duration'] < gridstep:
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+ logging.info("Talk <{}> lasts only {} minutes; changing to {}"
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+ .format(talkname, data['duration'], gridstep))
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+ data['duration'] = gridstep
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+ if 'links' not in data or not data['links']:
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+ data['links'] = []
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+ if 'contacts' not in data or not data['contacts']:
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+ data['contacts'] = []
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+ if 'needs' not in data or not data['needs']:
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+ data['needs'] = []
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+ if 'room' not in data:
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+ logging.warn("Talk <{}> has no `room` field".format(talkname))
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+ if 'time' not in data or 'day' not in data:
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+ logging.warn("Talk <{}> has no `time` or `day`".format(talkname))
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+ if 'time' in data:
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+ del data['time']
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+ if 'day' in data:
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+ del data['day']
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+ if 'day' in data:
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+ data['day'] = get_global_data()['startdate'] + \
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+ datetime.timedelta(days=data['day'])
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+ if 'time' in data and 'day' in data:
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+ timeparts = re.findall(r'\d+', str(data['time']))
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+ if 4 > len(timeparts) > 0:
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+ timeparts = [int(p) for p in timeparts]
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+ data['time'] = datetime.datetime.combine(
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+ data['day'], datetime.time(*timeparts))
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+ else:
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+ logging.error("Talk <%s> has malformed `time`", talkname)
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+ data['id'] = talkname
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+ resdir = os.path.join(pelican.settings['TALKS_PATH'], talkname,
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+ pelican.settings['TALKS_ATTACHMENT_PATH'])
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+ if os.path.isdir(resdir) and os.listdir(resdir):
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+ data['resources'] = resdir
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+ return data
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+ except:
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+ logging.exception("Error on talk %s", talkname)
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+ raise
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+
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+
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+@memoize
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+def jinja_env():
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+ env = jinja2.Environment(
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+ loader=jinja2.FileSystemLoader(os.path.join(pelican.settings['TALKS_PATH'], '_templates')),
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+ autoescape=True,
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+ )
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+ env.filters['markdown'] = lambda text: \
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+ jinja2.Markup(markdown.Markdown(extensions=['meta']).
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+ convert(text))
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+ env.filters['dateformat'] = format_date
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+ env.filters['datetimeformat'] = format_datetime
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+ env.filters['timeformat'] = format_time
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+ return env
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+
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+
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+class TalkListDirective(Directive):
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+ final_argument_whitespace = True
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+ has_content = True
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+ option_spec = {
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+ 'lang': directives.unchanged
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+ }
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+
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+ def run(self):
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+ lang = self.options.get('lang', 'C')
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+ tmpl = jinja_env().get_template('talk.html')
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+
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+ def _sort_date(name):
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+ '''
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+ This function is a helper to sort talks by start date
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+
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+ When no date is available, put at the beginning
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+ '''
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+ d = get_talk_data(name)
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+ if 'time' in d:
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+ return d['time']
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+ return datetime.datetime(1, 1, 1)
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+
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+ return [
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+ nodes.raw('', tmpl.render(lang=lang, **get_talk_data(n)),
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+ format='html')
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+ for n in sorted(get_talk_names(),
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+ key=_sort_date)
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+ ]
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+
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+
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+class TalkDirective(Directive):
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+ required_arguments = 1
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+ final_argument_whitespace = True
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+ has_content = True
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+ option_spec = {
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+ 'lang': directives.unchanged
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+ }
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+
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+ def run(self):
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+ lang = self.options.get('lang', 'C')
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+ tmpl = jinja_env().get_template('talk.html')
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+ data = get_talk_data(self.arguments[0])
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+ if data is None:
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+ return []
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+ return [
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+ nodes.raw('', tmpl.render(lang=lang, **data),
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+ format='html')
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+ ]
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+
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+
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+class TalkGridDirective(Directive):
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+ '''A complete grid'''
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+ final_argument_whitespace = True
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+ has_content = True
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+ option_spec = {
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+ 'lang': directives.unchanged
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+ }
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+
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+ def run(self):
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+ lang = self.options.get('lang', 'C')
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+ tmpl = jinja_env().get_template('grid.html')
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+ output = []
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+ days = unique_attr(all_talks(), 'day')
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+ gridstep = pelican.settings['TALKS_GRID_STEP']
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+ for day in sorted(days):
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+ talks = {talk['id'] for talk in all_talks()
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+ if talk.get('day', None) == day
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+ and 'time' in talk
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+ and 'room' in talk}
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+ if not talks:
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+ continue
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+ talks = [get_talk_data(t) for t in talks]
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+ rooms = set()
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+ for t in talks:
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+ if type(t['room']) is list:
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+ for r in t['room']:
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+ rooms.add(r)
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+ else:
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+ rooms.add(t['room'])
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+ rooms = list(sorted(rooms))
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+ # room=* is not a real room.
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+ # Remove it unless that day only has special rooms
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+ if '*' in rooms and len(rooms) > 1:
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+ del rooms[rooms.index('*')]
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+ mintime = min({talk['time'].hour * 60 +
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+ talk['time'].minute
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+ for talk in talks}) // gridstep * gridstep
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+ maxtime = max({talk['time'].hour * 60 +
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+ talk['time'].minute +
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+ talk['duration']
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+ for talk in talks})
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+ times = {}
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+
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+ for t in range(mintime, maxtime, gridstep):
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+ times[t] = [None] * len(rooms)
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+ for talk in sorted(talks, key=lambda x: x['time']):
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+ talktime = talk['time'].hour * 60 + talk['time'].minute
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+ position = talktime // gridstep * gridstep # round
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+ assert position in times
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+ if talk['room'] == '*':
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+ roomnums = range(len(rooms))
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+ elif type(talk['room']) is list:
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+ roomnums = [rooms.index(r) for r in talk['room']]
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+ else:
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+ roomnums = [rooms.index(talk['room'])]
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+ for roomnum in roomnums:
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+ if times[position][roomnum] is not None:
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+ logging.error("Talk %s and %s overlap! (room %s)",
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+ times[position][roomnum]['id'],
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+ talk['id'],
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+ rooms[roomnum]
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+ )
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+ continue
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+ times[position][roomnum] = copy(talk)
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+ times[position][roomnum]['skip'] = False
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+ for i in range(1, talk['duration'] // gridstep):
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+ times[position + i*gridstep][roomnum] = copy(talk)
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+ times[position + i*gridstep][roomnum]['skip'] = True
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+
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+ render = tmpl.render(times=times,
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+ rooms=rooms,
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+ mintime=mintime, maxtime=maxtime,
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+ timestep=gridstep,
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+ lang=lang,
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+ )
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+ output.append(nodes.raw(
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+ '', u'<h4>%s</h4>' % format_date(day, format='full',
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+ locale=lang),
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+ format='html'))
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+ output.append(nodes.raw('', render, format='html'))
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+ return output
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+
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+
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+def talks_to_ics():
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+ content = u'BEGIN:VCALENDAR\nVERSION:2.0\nPRODID:pelican\n'
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+ for t in all_talks():
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+ try:
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+ content += talk_to_ics(t)
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+ except:
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+ logging.exception("Error producing calendar for talk %s", t['id'])
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+ content += 'END:VCALENDAR\n'
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+ return content
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+
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+
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+def talk_to_ics(talk):
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+ if 'time' not in talk or 'duration' not in talk:
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+ return ''
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+ start = talk['time']
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+ end = start + datetime.timedelta(minutes=talk['duration'])
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+ content = 'BEGIN:VEVENT\n'
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+ content += "UID:%s@%d.hackmeeting.org\n" % (talk['id'], talk['day'].year)
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+ content += "SUMMARY:%s\n" % talk['title']
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+ content += "DTSTAMP:%s\n" % time.strftime('%Y%m%dT%H%M%SZ',
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+ time.gmtime(float(
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+ start.strftime('%s'))))
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+ content += "DTSTART:%s\n" % time.strftime('%Y%m%dT%H%M%SZ',
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+ time.gmtime(float(
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+ start.strftime('%s'))))
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+ content += "DTEND:%s\n" % time.strftime('%Y%m%dT%H%M%SZ',
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+ time.gmtime(float(
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+ end.strftime('%s'))))
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+
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+ content += "LOCATION:%s\n" % (talk['room'] if 'room' in talk else 'todo')
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+ content += 'END:VEVENT\n'
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+ return content
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+
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+
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+class TalksGenerator(generators.Generator):
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+ def __init__(self, *args, **kwargs):
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+ self.talks = []
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+ super(TalksGenerator, self).__init__(*args, **kwargs)
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+
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+ def generate_context(self):
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+ self.talks = {n: get_talk_data(n) for n in get_talk_names()}
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+ self._update_context(('talks',))
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+
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+ def generate_output(self, writer=None):
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+ for talkname in self.talks:
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+ if 'resources' in self.talks[talkname]:
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+ outdir = os.path.join(self.output_path,
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+ pelican.settings['TALKS_PATH'], talkname,
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+ pelican.settings['TALKS_ATTACHMENT_PATH'])
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+ if os.path.isdir(outdir):
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+ shutil.rmtree(outdir)
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+ shutil.copytree(self.talks[talkname]['resources'], outdir)
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+ with io.open(os.path.join(self.output_path, pelican.settings.get('TALKS_ICS')),
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+ 'w',
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+ encoding='utf8') as buf:
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+ buf.write(talks_to_ics())
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+
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+
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+def add_talks_option_defaults(pelican):
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+ pelican.settings.setdefault('TALKS_PATH', 'talks')
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+ pelican.settings.setdefault('TALKS_ATTACHMENT_PATH', 'res')
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+ pelican.settings.setdefault('TALKS_ICS', 'schedule.ics')
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+ pelican.settings.setdefault('TALKS_GRID_STEP', 30)
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+
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+
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+def get_generators(gen):
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+ return TalksGenerator
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+
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+
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+def pelican_init(pelicanobj):
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+ global pelican
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+ pelican = pelicanobj
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+
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+try:
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+ import yaml
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+except ImportError:
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+ print('ERROR: yaml not found. Talks plugins will be disabled')
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+
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+ def register():
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+ pass
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+else:
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+
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+ def register():
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+ signals.initialized.connect(pelican_init)
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+ signals.get_generators.connect(get_generators)
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+ signals.initialized.connect(add_talks_option_defaults)
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+ directives.register_directive('talklist', TalkListDirective)
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+ directives.register_directive('talk', TalkDirective)
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+ directives.register_directive('talkgrid', TalkGridDirective)
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boyska
6 gadi atpakaļ