594 lines
23 KiB
Python
594 lines
23 KiB
Python
# -*- coding: utf-8 -*-
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from __future__ import unicode_literals
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import datetime
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import itertools
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import json
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import logging
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import multiprocessing
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import os
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import pprint
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import re
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import sys
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from pelican.generators import ArticlesGenerator
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from pelican.generators import PagesGenerator
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from pelican.settings import DEFAULT_CONFIG
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from pelican import signals
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from pelican.utils import pelican_open
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logger = logging.getLogger(__name__)
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try:
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from PIL import Image
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from PIL import ImageDraw
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from PIL import ImageEnhance
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from PIL import ImageFont
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except ImportError:
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logger.error('PIL/Pillow not found')
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try:
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import piexif
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except ImportError:
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ispiexif = False
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logger.warning('piexif not found! Cannot use exif manipulation features')
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else:
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ispiexif = True
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logger.debug('piexif found.')
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def initialized(pelican):
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p = os.path.expanduser('~/Pictures')
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DEFAULT_CONFIG.setdefault('PHOTO_LIBRARY', p)
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DEFAULT_CONFIG.setdefault('PHOTO_GALLERY', (1024, 768, 80))
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DEFAULT_CONFIG.setdefault('PHOTO_ARTICLE', (760, 506, 80))
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DEFAULT_CONFIG.setdefault('PHOTO_THUMB', (192, 144, 60))
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DEFAULT_CONFIG.setdefault('PHOTO_GALLERY_TITLE', '')
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DEFAULT_CONFIG.setdefault('PHOTO_ALPHA_BACKGROUND_COLOR', (255, 255, 255))
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK', False)
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK_THUMB', False)
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK_TEXT', DEFAULT_CONFIG['SITENAME'])
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK_TEXT_COLOR', (255, 255, 255))
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK_IMG', '')
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DEFAULT_CONFIG.setdefault('PHOTO_WATERMARK_IMG_SIZE', False)
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DEFAULT_CONFIG.setdefault('PHOTO_RESIZE_JOBS', 1)
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DEFAULT_CONFIG.setdefault('PHOTO_EXIF_KEEP', False)
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DEFAULT_CONFIG.setdefault('PHOTO_EXIF_REMOVE_GPS', False)
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DEFAULT_CONFIG.setdefault('PHOTO_EXIF_AUTOROTATE', True)
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DEFAULT_CONFIG.setdefault('PHOTO_EXIF_COPYRIGHT', False)
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DEFAULT_CONFIG.setdefault('PHOTO_EXIF_COPYRIGHT_AUTHOR', DEFAULT_CONFIG['SITENAME'])
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DEFAULT_CONFIG.setdefault('PHOTO_LIGHTBOX_GALLERY_ATTR', 'data-lightbox')
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DEFAULT_CONFIG.setdefault('PHOTO_LIGHTBOX_CAPTION_ATTR', 'data-title')
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DEFAULT_CONFIG['queue_resize'] = {}
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DEFAULT_CONFIG['created_galleries'] = {}
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DEFAULT_CONFIG['plugin_dir'] = os.path.dirname(os.path.realpath(__file__))
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if pelican:
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pelican.settings.setdefault('PHOTO_LIBRARY', p)
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pelican.settings.setdefault('PHOTO_GALLERY', (1024, 768, 80))
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pelican.settings.setdefault('PHOTO_ARTICLE', (760, 506, 80))
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pelican.settings.setdefault('PHOTO_THUMB', (192, 144, 60))
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pelican.settings.setdefault('PHOTO_GALLERY_TITLE', '')
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pelican.settings.setdefault('PHOTO_ALPHA_BACKGROUND_COLOR', (255, 255, 255))
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pelican.settings.setdefault('PHOTO_WATERMARK', False)
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pelican.settings.setdefault('PHOTO_WATERMARK_THUMB', False)
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pelican.settings.setdefault('PHOTO_WATERMARK_TEXT', pelican.settings['SITENAME'])
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pelican.settings.setdefault('PHOTO_WATERMARK_TEXT_COLOR', (255, 255, 255))
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pelican.settings.setdefault('PHOTO_WATERMARK_IMG', '')
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pelican.settings.setdefault('PHOTO_WATERMARK_IMG_SIZE', False)
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pelican.settings.setdefault('PHOTO_RESIZE_JOBS', 1)
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pelican.settings.setdefault('PHOTO_EXIF_KEEP', False)
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pelican.settings.setdefault('PHOTO_EXIF_REMOVE_GPS', False)
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pelican.settings.setdefault('PHOTO_EXIF_AUTOROTATE', True)
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pelican.settings.setdefault('PHOTO_EXIF_COPYRIGHT', False)
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pelican.settings.setdefault('PHOTO_EXIF_COPYRIGHT_AUTHOR', pelican.settings['AUTHOR'])
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pelican.settings.setdefault('PHOTO_LIGHTBOX_GALLERY_ATTR', 'data-lightbox')
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pelican.settings.setdefault('PHOTO_LIGHTBOX_CAPTION_ATTR', 'data-title')
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def read_notes(filename, msg=None):
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notes = {}
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try:
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with pelican_open(filename) as text:
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for line in text.splitlines():
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if line.startswith('#'):
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continue
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m = line.split(':', 1)
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if len(m) > 1:
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pic = m[0].strip()
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note = m[1].strip()
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if pic and note:
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notes[pic] = note
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else:
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notes[line] = ''
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except Exception as e:
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if msg:
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logger.warning('{} at file {}'.format(msg, filename))
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logger.debug('read_notes issue: {} at file {}. Debug message:{}'.format(msg, filename, e))
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return notes
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def enqueue_resize(orig, resized, spec=(640, 480, 80)):
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if resized not in DEFAULT_CONFIG['queue_resize']:
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DEFAULT_CONFIG['queue_resize'][resized] = (orig, spec)
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elif DEFAULT_CONFIG['queue_resize'][resized] != (orig, spec):
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logger.error('photos: resize conflict for {}, {}-{} is not {}-{}'.format(resized, DEFAULT_CONFIG['queue_resize'][resized][0], DEFAULT_CONFIG['queue_resize'][resized][1], orig, spec))
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def isalpha(img):
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return True if img.mode in ('RGBA', 'LA') or (img.mode == 'P' and 'transparency' in img.info) else False
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def remove_alpha(img, bg_color):
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background = Image.new("RGB", img.size, bg_color)
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background.paste(img, mask=img.split()[3]) # 3 is the alpha channel
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return background
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def ReduceOpacity(im, opacity):
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"""Reduces Opacity.
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Returns an image with reduced opacity.
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Taken from http://aspn.activestate.com/ASPN/Cookbook/Python/Recipe/362879
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"""
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assert opacity >= 0 and opacity <= 1
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if isalpha(im):
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im = im.copy()
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else:
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im = im.convert('RGBA')
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alpha = im.split()[3]
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alpha = ImageEnhance.Brightness(alpha).enhance(opacity)
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im.putalpha(alpha)
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return im
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def watermark_photo(image, settings):
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margin = [10, 10]
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opacity = 0.6
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watermark_layer = Image.new("RGBA", image.size, (0, 0, 0, 0))
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draw_watermark = ImageDraw.Draw(watermark_layer)
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text_reducer = 32
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image_reducer = 8
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text_size = [0, 0]
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mark_size = [0, 0]
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text_position = [0, 0]
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if settings['PHOTO_WATERMARK_TEXT']:
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font_name = 'SourceCodePro-Bold.otf'
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default_font = os.path.join(DEFAULT_CONFIG['plugin_dir'], font_name)
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font = ImageFont.FreeTypeFont(default_font, watermark_layer.size[0] // text_reducer)
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text_size = draw_watermark.textsize(settings['PHOTO_WATERMARK_TEXT'], font)
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text_position = [image.size[i] - text_size[i] - margin[i] for i in [0, 1]]
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draw_watermark.text(text_position, settings['PHOTO_WATERMARK_TEXT'], settings['PHOTO_WATERMARK_TEXT_COLOR'], font=font)
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if settings['PHOTO_WATERMARK_IMG']:
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mark_image = Image.open(settings['PHOTO_WATERMARK_IMG'])
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mark_image_size = [watermark_layer.size[0] // image_reducer for size in mark_size]
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mark_image_size = settings['PHOTO_WATERMARK_IMG_SIZE'] if settings['PHOTO_WATERMARK_IMG_SIZE'] else mark_image_size
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mark_image.thumbnail(mark_image_size, Image.ANTIALIAS)
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mark_position = [watermark_layer.size[i] - mark_image.size[i] - margin[i] for i in [0, 1]]
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mark_position = tuple([mark_position[0] - (text_size[0] // 2) + (mark_image_size[0] // 2), mark_position[1] - text_size[1]])
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if not isalpha(mark_image):
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mark_image = mark_image.convert('RGBA')
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watermark_layer.paste(mark_image, mark_position, mark_image)
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watermark_layer = ReduceOpacity(watermark_layer, opacity)
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image.paste(watermark_layer, (0, 0), watermark_layer)
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return image
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def rotate_image(img, exif_dict):
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if "exif" in img.info and piexif.ImageIFD.Orientation in exif_dict["0th"]:
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orientation = exif_dict["0th"].pop(piexif.ImageIFD.Orientation)
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if orientation == 2:
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img = img.transpose(Image.FLIP_LEFT_RIGHT)
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elif orientation == 3:
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img = img.rotate(180)
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elif orientation == 4:
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img = img.rotate(180).transpose(Image.FLIP_LEFT_RIGHT)
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elif orientation == 5:
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img = img.rotate(-90).transpose(Image.FLIP_LEFT_RIGHT)
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elif orientation == 6:
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img = img.rotate(-90, expand=True)
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elif orientation == 7:
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img = img.rotate(90).transpose(Image.FLIP_LEFT_RIGHT)
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elif orientation == 8:
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img = img.rotate(90)
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return (img, exif_dict)
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def build_license(license, author):
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year = datetime.datetime.now().year
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license_file = os.path.join(DEFAULT_CONFIG['plugin_dir'], 'licenses.json')
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with open(license_file) as data_file:
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licenses = json.load(data_file)
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if any(license in k for k in licenses):
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return licenses[license]['Text'].format(Author=author, Year=year, URL=licenses[license]['URL'])
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else:
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return 'Copyright {Year} {Author}, All Rights Reserved'.format(Author=author, Year=year)
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def manipulate_exif(img, settings):
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try:
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exif = piexif.load(img.info['exif'])
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except Exception:
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logger.debug('EXIF information not found')
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exif = {}
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if settings['PHOTO_EXIF_AUTOROTATE']:
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img, exif = rotate_image(img, exif)
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if settings['PHOTO_EXIF_REMOVE_GPS']:
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exif.pop('GPS')
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if settings['PHOTO_EXIF_COPYRIGHT']:
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# We want to be minimally destructive to any preset exif author or copyright information.
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# If there is copyright or author information prefer that over everything else.
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if not exif['0th'].get(piexif.ImageIFD.Artist):
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exif['0th'][piexif.ImageIFD.Artist] = settings['PHOTO_EXIF_COPYRIGHT_AUTHOR']
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author = settings['PHOTO_EXIF_COPYRIGHT_AUTHOR']
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if not exif['0th'].get(piexif.ImageIFD.Copyright):
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license = build_license(settings['PHOTO_EXIF_COPYRIGHT'], author)
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exif['0th'][piexif.ImageIFD.Copyright] = license
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return (img, piexif.dump(exif))
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def resize_worker(orig, resized, spec, settings):
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logger.info('photos: make photo {} -> {}'.format(orig, resized))
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im = Image.open(orig)
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if ispiexif and settings['PHOTO_EXIF_KEEP'] and im.format == 'JPEG': # Only works with JPEG exif for sure.
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try:
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im, exif_copy = manipulate_exif(im, settings)
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except:
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logger.info('photos: no EXIF or EXIF error in {}'.format(orig))
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exif_copy = b''
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else:
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exif_copy = b''
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icc_profile = im.info.get("icc_profile", None)
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im.thumbnail((spec[0], spec[1]), Image.ANTIALIAS)
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directory = os.path.split(resized)[0]
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if isalpha(im):
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im = remove_alpha(im, settings['PHOTO_ALPHA_BACKGROUND_COLOR'])
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if not os.path.exists(directory):
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try:
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os.makedirs(directory)
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except Exception:
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logger.exception('Could not create {}'.format(directory))
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else:
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logger.debug('Directory already exists at {}'.format(os.path.split(resized)[0]))
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if settings['PHOTO_WATERMARK']:
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isthumb = True if spec == settings['PHOTO_THUMB'] else False
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if not isthumb or (isthumb and settings['PHOTO_WATERMARK_THUMB']):
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im = watermark_photo(im, settings)
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im.save(resized, 'JPEG', quality=spec[2], icc_profile=icc_profile, exif=exif_copy)
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def resize_photos(generator, writer):
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if generator.settings['PHOTO_RESIZE_JOBS'] == -1:
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debug = True
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generator.settings['PHOTO_RESIZE_JOBS'] = 1
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else:
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debug = False
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pool = multiprocessing.Pool(generator.settings['PHOTO_RESIZE_JOBS'])
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logger.debug('Debug Status: {}'.format(debug))
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for resized, what in DEFAULT_CONFIG['queue_resize'].items():
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resized = os.path.join(generator.output_path, resized)
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orig, spec = what
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if (not os.path.isfile(resized) or os.path.getmtime(orig) > os.path.getmtime(resized)):
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if debug:
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resize_worker(orig, resized, spec, generator.settings)
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else:
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pool.apply_async(resize_worker, (orig, resized, spec, generator.settings))
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pool.close()
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pool.join()
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def detect_content(content):
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hrefs = None
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def replacer(m):
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what = m.group('what')
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value = m.group('value')
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tag = m.group('tag')
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output = m.group(0)
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if what in ('photo', 'lightbox'):
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if value.startswith('/'):
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value = value[1:]
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path = os.path.join(
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os.path.expanduser(settings['PHOTO_LIBRARY']),
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value
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)
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if os.path.isfile(path):
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photo_prefix = os.path.splitext(value)[0].lower()
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if what == 'photo':
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photo_article = photo_prefix + 'a.jpg'
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enqueue_resize(
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path,
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os.path.join('photos', photo_article),
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settings['PHOTO_ARTICLE']
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)
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output = ''.join((
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'<',
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m.group('tag'),
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m.group('attrs_before'),
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m.group('src'),
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'=',
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m.group('quote'),
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os.path.join(settings['SITEURL'], 'photos', photo_article),
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m.group('quote'),
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m.group('attrs_after'),
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))
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elif what == 'lightbox' and tag == 'img':
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photo_gallery = photo_prefix + '.jpg'
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enqueue_resize(
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path,
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os.path.join('photos', photo_gallery),
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settings['PHOTO_GALLERY']
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)
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photo_thumb = photo_prefix + 't.jpg'
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enqueue_resize(
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path,
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os.path.join('photos', photo_thumb),
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settings['PHOTO_THUMB']
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)
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lightbox_attr_list = ['']
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gallery_name = value.split('/')[0]
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lightbox_attr_list.append('{}="{}"'.format(
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settings['PHOTO_LIGHTBOX_GALLERY_ATTR'],
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gallery_name
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))
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captions = read_notes(
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os.path.join(os.path.dirname(path), 'captions.txt'),
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msg = 'photos: No captions for gallery'
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)
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caption = captions.get(os.path.basename(path)) if captions else None
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if caption:
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lightbox_attr_list.append('{}="{}"'.format(
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settings['PHOTO_LIGHTBOX_CAPTION_ATTR'],
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caption
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))
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lightbox_attrs = ' '.join(lightbox_attr_list)
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output = ''.join((
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'<a href=',
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m.group('quote'),
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os.path.join(settings['SITEURL'], 'photos', photo_gallery),
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m.group('quote'),
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lightbox_attrs,
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'><img',
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m.group('attrs_before'),
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'src=',
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m.group('quote'),
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os.path.join(settings['SITEURL'], 'photos', photo_thumb),
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m.group('quote'),
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m.group('attrs_after'),
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'</a>'
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))
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else:
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logger.error('photos: No photo %s', path)
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return output
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if hrefs is None:
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regex = r"""
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<\s*
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(?P<tag>[^\s\>]+) # detect the tag
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(?P<attrs_before>[^\>]*)
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(?P<src>href|src) # match tag with src and href attr
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\s*=
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(?P<quote>["\']) # require value to be quoted
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(?P<path>{0}(?P<value>.*?)) # the url value
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(?P=quote)
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(?P<attrs_after>[^\>]*>)
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""".format(
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content.settings['INTRASITE_LINK_REGEX']
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)
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hrefs = re.compile(regex, re.X)
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if content._content and ('{photo}' in content._content or '{lightbox}' in content._content):
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settings = content.settings
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content._content = hrefs.sub(replacer, content._content)
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def galleries_string_decompose(gallery_string):
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splitter_regex = re.compile(r'[\s,]*?({photo}|{filename})')
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title_regex = re.compile(r'{(.+)}')
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galleries = map(unicode.strip if sys.version_info.major == 2 else str.strip, filter(None, splitter_regex.split(gallery_string)))
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galleries = [gallery[1:] if gallery.startswith('/') else gallery for gallery in galleries]
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if len(galleries) % 2 == 0 and ' ' not in galleries:
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galleries = zip(zip(['type'] * len(galleries[0::2]), galleries[0::2]), zip(['location'] * len(galleries[0::2]), galleries[1::2]))
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galleries = [dict(gallery) for gallery in galleries]
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for gallery in galleries:
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title = re.search(title_regex, gallery['location'])
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if title:
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gallery['title'] = title.group(1)
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gallery['location'] = re.sub(title_regex, '', gallery['location']).strip()
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else:
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gallery['title'] = DEFAULT_CONFIG['PHOTO_GALLERY_TITLE']
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return galleries
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else:
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logger.error('Unexpected gallery location format! \n{}'.format(pprint.pformat(galleries)))
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def process_gallery(generator, content, location):
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content.photo_gallery = []
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galleries = galleries_string_decompose(location)
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for gallery in galleries:
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if gallery['location'] in DEFAULT_CONFIG['created_galleries']:
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content.photo_gallery.append((gallery['location'], DEFAULT_CONFIG['created_galleries'][gallery]))
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continue
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if gallery['type'] == '{photo}':
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dir_gallery = os.path.join(os.path.expanduser(generator.settings['PHOTO_LIBRARY']), gallery['location'])
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rel_gallery = gallery['location']
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elif gallery['type'] == '{filename}':
|
|
base_path = os.path.join(generator.path, content.relative_dir)
|
|
dir_gallery = os.path.join(base_path, gallery['location'])
|
|
rel_gallery = os.path.join(content.relative_dir, gallery['location'])
|
|
|
|
if os.path.isdir(dir_gallery):
|
|
logger.info('photos: Gallery detected: {}'.format(rel_gallery))
|
|
dir_photo = os.path.join('photos', rel_gallery.lower())
|
|
dir_thumb = os.path.join('photos', rel_gallery.lower())
|
|
exifs = read_notes(os.path.join(dir_gallery, 'exif.txt'),
|
|
msg='photos: No EXIF for gallery')
|
|
captions = read_notes(os.path.join(dir_gallery, 'captions.txt'), msg='photos: No captions for gallery')
|
|
blacklist = read_notes(os.path.join(dir_gallery, 'blacklist.txt'), msg='photos: No blacklist for gallery')
|
|
content_gallery = []
|
|
|
|
title = gallery['title']
|
|
for pic in sorted(os.listdir(dir_gallery)):
|
|
if pic.startswith('.'):
|
|
continue
|
|
if pic.endswith('.txt'):
|
|
continue
|
|
if pic in blacklist:
|
|
continue
|
|
photo = os.path.splitext(pic)[0].lower() + '.jpg'
|
|
thumb = os.path.splitext(pic)[0].lower() + 't.jpg'
|
|
content_gallery.append((
|
|
pic,
|
|
os.path.join(dir_photo, photo),
|
|
os.path.join(dir_thumb, thumb),
|
|
exifs.get(pic, ''),
|
|
captions.get(pic, '')))
|
|
|
|
enqueue_resize(
|
|
os.path.join(dir_gallery, pic),
|
|
os.path.join(dir_photo, photo),
|
|
generator.settings['PHOTO_GALLERY'])
|
|
enqueue_resize(
|
|
os.path.join(dir_gallery, pic),
|
|
os.path.join(dir_thumb, thumb),
|
|
generator.settings['PHOTO_THUMB'])
|
|
|
|
content.photo_gallery.append((title, content_gallery))
|
|
logger.debug('Gallery Data: '.format(pprint.pformat(content.photo_gallery)))
|
|
DEFAULT_CONFIG['created_galleries']['gallery'] = content_gallery
|
|
else:
|
|
logger.error('photos: Gallery does not exist: {} at {}'.format(gallery['location'], dir_gallery))
|
|
|
|
|
|
def detect_gallery(generator, content):
|
|
if 'gallery' in content.metadata:
|
|
gallery = content.metadata.get('gallery')
|
|
if gallery.startswith('{photo}') or gallery.startswith('{filename}'):
|
|
process_gallery(generator, content, gallery)
|
|
elif gallery:
|
|
logger.error('photos: Gallery tag not recognized: {}'.format(gallery))
|
|
|
|
|
|
def image_clipper(x):
|
|
return x[8:] if x[8] == '/' else x[7:]
|
|
|
|
|
|
def file_clipper(x):
|
|
return x[11:] if x[10] == '/' else x[10:]
|
|
|
|
|
|
def process_image(generator, content, image):
|
|
|
|
if image.startswith('{photo}'):
|
|
path = os.path.join(os.path.expanduser(generator.settings['PHOTO_LIBRARY']), image_clipper(image))
|
|
image = image_clipper(image)
|
|
elif image.startswith('{filename}'):
|
|
path = os.path.join(content.relative_dir, file_clipper(image))
|
|
image = file_clipper(image)
|
|
|
|
if os.path.isfile(path):
|
|
photo = os.path.splitext(image)[0].lower() + 'a.jpg'
|
|
thumb = os.path.splitext(image)[0].lower() + 't.jpg'
|
|
content.photo_image = (
|
|
os.path.basename(image).lower(),
|
|
os.path.join('photos', photo),
|
|
os.path.join('photos', thumb))
|
|
enqueue_resize(
|
|
path,
|
|
os.path.join('photos', photo),
|
|
generator.settings['PHOTO_ARTICLE'])
|
|
enqueue_resize(
|
|
path,
|
|
os.path.join('photos', thumb),
|
|
generator.settings['PHOTO_THUMB'])
|
|
else:
|
|
logger.error('photo: No photo for {} at {}'.format(content.source_path, path))
|
|
|
|
|
|
def detect_image(generator, content):
|
|
image = content.metadata.get('image', None)
|
|
if image:
|
|
if image.startswith('{photo}') or image.startswith('{filename}'):
|
|
process_image(generator, content, image)
|
|
else:
|
|
logger.error('photos: Image tag not recognized: {}'.format(image))
|
|
|
|
|
|
def detect_images_and_galleries(generators):
|
|
"""Runs generator on both pages and articles."""
|
|
for generator in generators:
|
|
if isinstance(generator, ArticlesGenerator):
|
|
for article in itertools.chain(generator.articles, generator.translations, generator.drafts):
|
|
detect_image(generator, article)
|
|
detect_gallery(generator, article)
|
|
elif isinstance(generator, PagesGenerator):
|
|
for page in itertools.chain(generator.pages, generator.translations, generator.hidden_pages):
|
|
detect_image(generator, page)
|
|
detect_gallery(generator, page)
|
|
|
|
|
|
def register():
|
|
"""Uses the new style of registration based on GitHub Pelican issue #314."""
|
|
signals.initialized.connect(initialized)
|
|
try:
|
|
signals.content_object_init.connect(detect_content)
|
|
signals.all_generators_finalized.connect(detect_images_and_galleries)
|
|
signals.article_writer_finalized.connect(resize_photos)
|
|
except Exception as e:
|
|
logger.exception('Plugin failed to execute: {}'.format(pprint.pformat(e)))
|