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76 lines
2.5 KiB
76 lines
2.5 KiB
7 years ago
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# -*- coding: utf-8 -*-
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"""
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This plugin extends the original series plugin
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by FELD Boris <lothiraldan@gmail.com>
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Copyright (c) Leonardo Giordani <giordani.leonardo@gmail.com>
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Joins articles in a series and provides variables to
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manage the series in the template.
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"""
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from collections import defaultdict
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from pelican import signals
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from logging import warning
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from operator import itemgetter
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def aggregate_series(generator):
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series = defaultdict(list)
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# This cycles through all articles in the given generator
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# and collects the 'series' metadata, if present.
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# The 'series_index' metadata is also stored, if specified
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for article in generator.articles:
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if 'series' in article.metadata:
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article_entry = (
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article.metadata.get('series_index', None),
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article.metadata['date'],
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article
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)
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series[article.metadata['series']].append(article_entry)
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# This uses items() which on Python2 is not a generator
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# but we are dealing with a small amount of data so
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# there shouldn't be performance issues =)
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for series_name, series_articles in series.items():
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# This is not DRY but very simple to understand
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forced_order_articles = [
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art_tup for art_tup in series_articles if art_tup[0] is not None]
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date_order_articles = [
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art_tup for art_tup in series_articles if art_tup[0] is None]
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forced_order_articles.sort(key=itemgetter(0))
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date_order_articles.sort(key=itemgetter(1))
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all_articles = forced_order_articles + date_order_articles
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ordered_articles = [art_tup[2] for art_tup in all_articles]
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enumerated_articles = enumerate(ordered_articles)
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for index, article in enumerated_articles:
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article.series = dict()
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article.series['name'] = series_name
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article.series['index'] = index + 1
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article.series['all'] = ordered_articles
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article.series['all_previous'] = ordered_articles[0: index]
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article.series['all_next'] = ordered_articles[index + 1:]
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if index > 0:
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article.series['previous'] = ordered_articles[index - 1]
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else:
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article.series['previous'] = None
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try:
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article.series['next'] = ordered_articles[index + 1]
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except IndexError:
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article.series['next'] = None
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def register():
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signals.article_generator_finalized.connect(aggregate_series)
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