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Merge pull request #3046 from getnikola/make-chart-independent
Make chart independent
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[Core] | ||
name = chart | ||
module = chart | ||
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[Nikola] | ||
PluginCategory = Shortcode | ||
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[Documentation] | ||
author = Roberto Alsina | ||
version = 0.1 | ||
website = https://getnikola.com/ | ||
description = Chart directive based in PyGal | ||
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# -*- coding: utf-8 -*- | ||
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# Copyright © 2012-2018 Roberto Alsina and others. | ||
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# Permission is hereby granted, free of charge, to any | ||
# person obtaining a copy of this software and associated | ||
# documentation files (the "Software"), to deal in the | ||
# Software without restriction, including without limitation | ||
# the rights to use, copy, modify, merge, publish, | ||
# distribute, sublicense, and/or sell copies of the | ||
# Software, and to permit persons to whom the Software is | ||
# furnished to do so, subject to the following conditions: | ||
# | ||
# The above copyright notice and this permission notice | ||
# shall be included in all copies or substantial portions of | ||
# the Software. | ||
# | ||
# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY | ||
# KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE | ||
# WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR | ||
# PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS | ||
# OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR | ||
# OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | ||
# OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE | ||
# SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. | ||
"""Chart shortcode.""" | ||
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from ast import literal_eval | ||
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try: | ||
import pygal | ||
except ImportError: | ||
pygal = None # NOQA | ||
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from nikola.plugin_categories import ShortcodePlugin | ||
from nikola.utils import req_missing | ||
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_site = None | ||
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class ChartShortcode(ShortcodePlugin): | ||
"""Plugin for chart shortcode.""" | ||
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name = "chart" | ||
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def handler(self, chart_type, **_options): | ||
"""Generate chart using Pygal.""" | ||
if pygal is None: | ||
msg = req_missing( | ||
['pygal'], 'use the Chart directive', optional=True) | ||
return '<div class="text-error">{0}</div>'.format(msg) | ||
options = {} | ||
data = _options.pop('data') | ||
_options.pop('post', None) | ||
_options.pop('site') | ||
if 'style' in _options: | ||
style_name = _options.pop('style') | ||
else: | ||
style_name = 'BlueStyle' | ||
if '(' in style_name: # Parametric style | ||
style = eval('pygal.style.' + style_name) | ||
else: | ||
style = getattr(pygal.style, style_name) | ||
for k, v in _options.items(): | ||
try: | ||
options[k] = literal_eval(v) | ||
except Exception: | ||
options[k] = v | ||
chart = pygal | ||
for o in chart_type.split('.'): | ||
chart = getattr(chart, o) | ||
chart = chart(style=style) | ||
if _site and _site.invariant: | ||
chart.no_prefix = True | ||
chart.config(**options) | ||
for line in data.splitlines(): | ||
line = line.strip() | ||
if line: | ||
label, series = literal_eval('({0})'.format(line)) | ||
chart.add(label, series) | ||
return chart.render().decode('utf8') |