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Python script to generate configuration for a lightGallery photo gallery in Jekyll.
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#!/usr/bin/env python | |
# install imagesize: pip install imagesize pyyaml | |
__author__ = 'Olivier Pieters' | |
__author_email__ = 'me@olivierpieters.be' | |
__license__ = 'BSD-3-Clause' | |
import yaml, imagesize | |
from os import listdir, rename | |
from os.path import isfile, join | |
# configuration | |
output_file = "ghent-light-festival.yml" | |
input_file = output_file | |
image_path = "ghent-light-festival" | |
extensions= ['jpg', 'png'] | |
# set correct path | |
path = join("../../assets/photography/", image_path) | |
# extract image files | |
print('Collecting files...') | |
files = [f for f in listdir(path) if isfile(join(path, f))] | |
files = [f for f in files if f[f.rfind('.')+1:] in extensions ] | |
# rename image files | |
print('Renaming files...') | |
new_files = [] | |
for f in files: | |
if f[f.rfind('-')+1:f.rfind('.')] != 'thumbnail': | |
newf = f[:f.rfind('-')] + "-%sx%s" % imagesize.get(join(path, f)) + f[f.rfind('.'):] | |
rename(join(path, f),join(path, newf)) | |
else: | |
newf = f | |
new_files.append(newf) | |
files = new_files | |
# helper objects to store gallery data | |
new_gallery = {} | |
thumbs = {} | |
# group gallery data | |
print('Grouping files...') | |
for f in files: | |
filename = f[:f.rfind('-')] | |
if f[f.rfind('-')+1:f.rfind('.')] == "thumbnail": | |
thumbs[filename] = f | |
else: | |
if filename in new_gallery: | |
new_gallery[filename].append(f) | |
else: | |
new_gallery[filename] = [f] | |
# find largest image -> set as original | |
print('Searching for originals and missing thumbnails...') | |
originals = {} | |
for image_set in new_gallery: | |
max_width, max_height = imagesize.get(join(path, new_gallery[image_set][0])) | |
min_width, min_height = imagesize.get(join(path, new_gallery[image_set][0])) | |
original = new_gallery[image_set][0] | |
thumbnail = new_gallery[image_set][0] | |
for image in new_gallery[image_set]: | |
width, height = imagesize.get(join(path, image)) | |
if (width*height) > (max_width*max_height): | |
original = image | |
if (width*height) < (min_width*min_height): | |
thumbnail = image | |
# delete original from list to avoid double entries | |
del new_gallery[image_set][new_gallery[image_set].index(original)] | |
originals[image_set] = original | |
# add thumbnial if not yet in dict (not removed since might still be useful) | |
if image_set not in thumbs: | |
thumbs[image_set] = thumbnail | |
# try to load YAML data | |
print('Checking existing YAML data...') | |
if isfile(input_file): | |
input_gallery = yaml.load(open(input_file, 'r')) | |
else: | |
# create empty dummy file | |
input_gallery = {"pictures": []} | |
old_gallery = input_gallery['pictures'] | |
# merge two data sets into one | |
print('Merging YAML data...') | |
for pic in new_gallery: | |
found = False | |
# try to find matching filename | |
for i in old_gallery: | |
if pic == i["filename"]: | |
i["sizes"] = new_gallery[pic] | |
# include thumbnail if present | |
if pic in thumbs: | |
i["thumbnail"] = thumbs[pic] | |
found = True | |
if not found: | |
# create new entry | |
old_gallery.append({"filename": pic, "sizes": new_gallery[pic], "thumbnail": thumbs[pic], "original": originals[pic]}) | |
# check if path existing | |
if "picture_path" not in input_gallery: | |
input_gallery["picture_path"] = image_path | |
# write to output file | |
print('Writing YAML data to file...') | |
with open(output_file, 'w') as f: | |
f.write( yaml.dump(input_gallery, default_flow_style=False) ) |
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