magcms/prosopopee/prosopopee.py
2016-02-09 21:12:34 +01:00

198 lines
8.0 KiB
Python

#!/usr/bin/env python
import os
import sys
import json
import yaml
import shutil
from jinja2 import Environment, FileSystemLoader
templates = Environment(loader=FileSystemLoader([os.path.realpath(os.path.join(os.getcwd(), "templates")), os.path.join(os.path.split(os.path.realpath(__file__))[0], "templates")]))
index_template = templates.get_template("index.html")
gallery_index_template = templates.get_template("gallery-index.html")
page_template = templates.get_template("page.html")
DEFAULT_GM_QUALITY = 75
CACHE_VERSION = 1
class Cache(object):
cache_file_path = os.path.join(os.getcwd(), ".prosopopee_cache")
def __init__(self, json):
# fix: I need to keep a reference to json because for whatever reason
# modules are set to None during python shutdown thus totally breaking
# the __del__ call to save the cache
# This wonderfully stupid behavior has been fixed in 3.4 (which nobody uses)
self.json = json
if os.path.exists(os.path.join(os.getcwd(), ".prosopopee_cache")):
self.cache = json.load(open(self.cache_file_path, "r"))
else:
self.cache = {"version": CACHE_VERSION}
if "version" not in self.cache or self.cache["version"] != CACHE_VERSION:
print "info: cache format as changed, prune cache"
self.cache = {"version": CACHE_VERSION}
def thumbnail_needs_to_be_generated(self, source, target, image):
if not os.path.exists(target):
return True
if target not in self.cache:
return True
cached_thumbnail = self.cache[target]
if cached_thumbnail["size"] != os.path.getsize(source) or cached_thumbnail["options"] != image.options:
return True
return False
def cache_thumbnail(self, source, target, image):
self.cache[target] = {"size": os.path.getsize(source), "options": image.options}
def __del__(self):
self.json.dump(self.cache, open(self.cache_file_path, "w"))
CACHE = Cache(json=json)
class Image(object):
base_dir = ""
target_dir = ""
def __init__(self, options):
# assuming string
if not isinstance(options, dict):
name = options
options = {"name": options}
self.name = name
self.quality = options.get("quality", DEFAULT_GM_QUALITY)
self.options = options.copy() # used for caching, if it's modified -> regenerate
del self.options["name"]
def copy(self):
source, target = os.path.join(self.base_dir, self.name), os.path.join(self.target_dir, self.name)
# XXX doing this DOESN'T improve perf at all (or something like 0.1%)
# if os.path.exists(target) and os.path.getsize(source) == os.path.getsize(target):
# print "Skiped %s since the file hasn't been modified based on file size" % source
# return ""
shutil.copyfile(source, target)
print source, "->", target
return ""
def generate_thumbnail(self, gm_geometry):
thumbnail_name = self.name.split(".")
thumbnail_name[-2] += "-small"
thumbnail_name = ".".join(thumbnail_name)
source, target = os.path.join(self.base_dir, self.name), os.path.join(self.target_dir, thumbnail_name)
if CACHE.thumbnail_needs_to_be_generated(source, target, self):
command = "gm convert %s -resize %s -quality %s %s" % (source, gm_geometry, self.quality, target)
print command
os.system(command)
CACHE.cache_thumbnail(source, target, self)
else:
print "skiped %s since it's already generated (based on source unchanged size and images options set in your gallery's settings.yaml)" % target
return thumbnail_name
def __repr__(self):
return self.name
def error(test, error_message):
if test:
return
sys.stderr.write(error_message)
sys.stderr.write("\n")
sys.stderr.write("Abort.\n")
sys.exit(1)
def main():
if os.system("which gm > /dev/null") != 0:
sys.stderr.write("ERROR: I can't locate the 'gm' binary, I won't be able to resize images, please install the 'graphicsmagick' package.\n")
sys.exit(1)
error(os.path.exists(os.path.join(os.getcwd(), "settings.yaml")), "I can't find a settings.yaml in the current working directory")
settings = yaml.safe_load(open("settings.yaml", "r"))
error(isinstance(settings, dict), "Your settings.yaml should be a dict")
error(settings.get("title"), "You should specify a title in your main settings.yaml")
front_page_galleries_cover = []
dirs = filter(lambda x: x not in (".", "..") and os.path.isdir(x) and os.path.exists(os.path.join(os.getcwd(), x, "settings.yaml")), os.listdir(os.getcwd()))
error(dirs, "I can't find at least one directory with a settings.yaml in the current working directory (NOT the settings.yml in your current directory, but a one INSIDE A DIRECTORY in your current working directory), you don't have any gallery?")
if not os.path.exists("build"):
os.makedirs("build")
# XXX recursively merge directories
if os.path.exists(os.path.join(os.getcwd(), "build", "static")):
shutil.rmtree(os.path.join(os.getcwd(), "build", "static"))
shutil.copytree(os.path.join(os.path.split(os.path.realpath(__file__))[0], "static"), os.path.join(os.getcwd(), "build", "static"))
for gallery in dirs:
gallery_settings = yaml.safe_load(open(os.path.join(os.getcwd(), gallery, "settings.yaml"), "r"))
error(isinstance(gallery_settings, dict), "Your %s should be a dict" % (os.path.join(gallery, "settings.yaml")))
error(gallery_settings.get("title"), "You should specify a title in %s" % (os.path.join(gallery, "settings.yaml")))
error(gallery_settings.get("cover"), "You should specify a path to a cover picture in %s" % (os.path.join(gallery, "settings.yaml")))
cover_image_path = os.path.join(gallery, gallery_settings["cover"])
error(os.path.exists(cover_image_path), "File for %s cover image doesn't exists at %s" % (gallery, cover_image_path))
gallery_title = gallery_settings["title"]
gallery_sub_title = gallery_settings.get("sub_title", "")
gallery_date = gallery_settings["date"] if "date" in gallery_settings else ""
if gallery_settings.get("public", True):
front_page_galleries_cover.append({
"title": gallery_title,
"link": gallery,
"sub_title": gallery_sub_title,
"date": gallery_date,
"cover": cover_image_path,
})
if not os.path.exists(os.path.join("build", gallery)):
os.makedirs(os.path.join("build", gallery))
# this should probably be a factory
Image.base_dir = os.path.join(os.getcwd(), gallery)
Image.target_dir = os.path.join(os.getcwd(), "build", gallery)
open(os.path.join("build", gallery, "index.html"), "w").write(gallery_index_template.render(settings=settings, gallery=gallery_settings, Image=Image).encode("Utf-8"))
front_page_galleries_cover = reversed(sorted(front_page_galleries_cover, key=lambda x: x["date"]))
if settings.get('menu'):
for item in settings["menu"]:
for link in item:
item_file = link
error(os.path.exists(os.path.join(os.getcwd(), item_file+".yaml")), "I can't find a "+item_file+".yaml in the current working directory")
open(os.path.join("build", item_file+".html"), "w").write(page_template.render(settings=settings, pages=yaml.safe_load(open(item_file+".yaml", "r")), galleries=front_page_galleries_cover, helpers=TemplateFunctions(os.getcwd(), os.path.join(os.getcwd(), "build"), has_gm=has_gm)).encode("Utf-8"))
Image.base_dir = os.getcwd()
Image.target_dir = os.path.join(os.getcwd(), "build")
open(os.path.join("build", "index.html"), "w").write(index_template.render(settings=settings, galleries=front_page_galleries_cover, Image=Image).encode("Utf-8"))
if __name__ == '__main__':
main()