forked from varia/varia.website
many many many Varia's websites, work in progress: https://many.vvvvvvaria.org
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
124 lines
4.8 KiB
124 lines
4.8 KiB
7 years ago
|
"""
|
||
|
|
Better Figures & Images
|
||
|
|
------------------------
|
||
|
|
|
||
|
|
This plugin:
|
||
|
|
|
||
|
|
- Adds a style="width: ???px; height: auto;" to each image in the content
|
||
|
|
- Also adds the width of the contained image to any parent div.figures.
|
||
|
|
- If RESPONSIVE_IMAGES == True, also adds style="max-width: 100%;"
|
||
|
|
- Corrects alt text: if alt == image filename, set alt = ''
|
||
|
|
|
||
|
|
TODO: Need to add a test.py for this plugin.
|
||
|
|
|
||
|
|
"""
|
||
|
|
|
||
|
|
from __future__ import unicode_literals
|
||
|
|
from os import path, access, R_OK
|
||
|
|
import os
|
||
|
|
|
||
|
|
from pelican import signals
|
||
|
|
|
||
|
|
from bs4 import BeautifulSoup
|
||
|
|
from PIL import Image
|
||
|
|
import pysvg.parser
|
||
|
|
|
||
|
|
import logging
|
||
|
|
logger = logging.getLogger(__name__)
|
||
|
|
|
||
|
|
def content_object_init(instance):
|
||
|
|
|
||
|
|
if instance._content is not None:
|
||
|
|
content = instance._content
|
||
|
|
soup = BeautifulSoup(content, 'html.parser')
|
||
|
|
|
||
|
|
for img in soup(['img', 'object']):
|
||
|
|
logger.debug('Better Fig. PATH: %s', instance.settings['PATH'])
|
||
|
|
if img.name == 'img':
|
||
|
|
logger.debug('Better Fig. img.src: %s', img['src'])
|
||
|
|
img_path, img_filename = path.split(img['src'])
|
||
|
|
else:
|
||
|
|
logger.debug('Better Fig. img.data: %s', img['data'])
|
||
|
|
img_path, img_filename = path.split(img['data'])
|
||
|
|
logger.debug('Better Fig. img_path: %s', img_path)
|
||
|
|
logger.debug('Better Fig. img_fname: %s', img_filename)
|
||
|
|
|
||
|
|
# Pelican 3.5+ supports {attach} macro for auto copy, in this use case the content does not exist in output
|
||
|
|
# due to the fact it has not been copied, hence we take it from the source (same as current document)
|
||
|
|
if img_filename.startswith('{attach}'):
|
||
|
|
img_path = os.path.dirname(instance.source_path)
|
||
|
|
img_filename = img_filename[8:]
|
||
|
|
src = os.path.join(img_path, img_filename)
|
||
|
|
else:
|
||
|
|
# Strip off {filename}, |filename| or /static
|
||
|
|
if img_path.startswith(('{filename}', '|filename|')):
|
||
|
|
img_path = img_path[10:]
|
||
|
|
elif img_path.startswith('/static'):
|
||
|
|
img_path = img_path[7:]
|
||
|
|
elif img_path.startswith('data:image'):
|
||
|
|
# Image is encoded in-line (not a file).
|
||
|
|
continue
|
||
|
|
else:
|
||
|
|
logger.warning('Better Fig. Error: img_path should start with either {filename}, |filename| or /static')
|
||
|
|
|
||
|
|
# search src path list
|
||
|
|
# 1. Build the source image filename from PATH
|
||
|
|
# 2. Build the source image filename from STATIC_PATHS
|
||
|
|
|
||
|
|
# if img_path start with '/', remove it.
|
||
|
|
img_path = os.path.sep.join([el for el in img_path.split("/") if len(el) > 0])
|
||
|
|
|
||
|
|
# style: {filename}/static/foo/bar.png
|
||
|
|
src = os.path.join(instance.settings['PATH'], img_path, img_filename)
|
||
|
|
src_candidates = [src]
|
||
|
|
|
||
|
|
# style: {filename}../static/foo/bar.png
|
||
|
|
src_candidates += [os.path.join(instance.settings['PATH'], static_path, img_path, img_filename) for static_path in instance.settings['STATIC_PATHS']]
|
||
|
|
|
||
|
|
src_candidates = [f for f in src_candidates if path.isfile(f) and access(f, R_OK)]
|
||
|
|
|
||
|
|
if not src_candidates:
|
||
|
|
logger.error('Better Fig. Error: image not found: %s', src)
|
||
|
|
logger.debug('Better Fig. Skip src: %s', img_path + '/' + img_filename)
|
||
|
|
continue
|
||
|
|
|
||
|
|
src = src_candidates[0]
|
||
|
|
logger.debug('Better Fig. src: %s', src)
|
||
|
|
|
||
|
|
# Open the source image and query dimensions; build style string
|
||
|
|
try:
|
||
|
|
if img.name == 'img':
|
||
|
|
im = Image.open(src)
|
||
|
|
extra_style = 'width: {}px; height: auto;'.format(im.size[0])
|
||
|
|
else:
|
||
|
|
svg = pysvg.parser.parse(src)
|
||
|
|
extra_style = 'width: {}px; height: auto;'.format(svg.get_width())
|
||
|
|
except IOError as e:
|
||
|
|
logger.debug('Better Fig. Failed to open: %s', src)
|
||
|
|
extra_style = 'width: 100%; height: auto;'
|
||
|
|
|
||
|
|
if 'RESPONSIVE_IMAGES' in instance.settings and instance.settings['RESPONSIVE_IMAGES']:
|
||
|
|
extra_style += ' max-width: 100%;'
|
||
|
|
|
||
|
|
if img.get('style'):
|
||
|
|
img['style'] += extra_style
|
||
|
|
else:
|
||
|
|
img['style'] = extra_style
|
||
|
|
|
||
|
|
if img.name == 'img':
|
||
|
|
if img['alt'] == img['src']:
|
||
|
|
img['alt'] = ''
|
||
|
|
|
||
|
|
fig = img.find_parent('div', 'figure')
|
||
|
|
if fig:
|
||
|
|
if fig.get('style'):
|
||
|
|
fig['style'] += extra_style
|
||
|
|
else:
|
||
|
|
fig['style'] = extra_style
|
||
|
|
|
||
|
|
instance._content = soup.decode()
|
||
|
|
|
||
|
|
|
||
|
|
def register():
|
||
|
|
signals.content_object_init.connect(content_object_init)
|