Files
sigal/sigal/gallery.py
2014-03-08 23:36:12 +01:00

512 lines
17 KiB
Python

# -*- coding:utf-8 -*-
# Copyright (c) 2009-2013 - Simon Conseil
# Copyright (c) 2013 - Christophe-Marie Duquesne
# 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.
from __future__ import absolute_import, print_function
import codecs
import logging
import markdown
import multiprocessing
import os
import sys
import zipfile
from collections import defaultdict
from os.path import isfile, join
from PIL import Image as PILImage
from . import image, video
from .compat import UnicodeMixin, alpha_sort
from .image import process_image, get_exif_tags
from .log import colored, BLUE
from .settings import get_thumb, get_orig
from .utils import copy, check_or_create_dir
from .video import process_video
from .writer import Writer
class Media(UnicodeMixin):
"""Base Class for media files.
Attributes:
- ``type``: ``"image"`` or ``"video"``.
- ``filename``: Filename of the resized image.
- ``thumbnail``: Location of the corresponding thumbnail image.
- ``big``: If not None, location of the unmodified image.
- ``exif``: If not None contains a dict with the most common tags. For more
information, see :ref:`simple-exif-data`.
- ``raw_exif``: If not ``None``, it contains the raw EXIF tags.
"""
type = ''
extensions = ()
def __init__(self, filename, path, settings):
self.filename = filename
self.settings = settings
self.file_path = join(path, filename)
self.src_path = join(settings['source'], path, filename)
self.dst_path = join(settings['destination'], path, filename)
self.thumb_name = get_thumb(self.settings, self.filename)
self.thumb_path = join(settings['destination'], path, self.thumb_name)
self.logger = logging.getLogger(__name__)
self.raw_exif = None
self.exif = None
def __repr__(self):
return "<%s>(%r)" % (self.__class__.__name__, self.file_path)
def __unicode__(self):
return self.file_path
@property
def big(self):
"""Path to the original image, if ``keep_orig`` is set (relative to the
album directory).
"""
if self.settings['keep_orig']:
return get_orig(self.settings, self.filename)
else:
return None
@property
def thumbnail(self):
"""Path to the thumbnail image (relative to the album directory)."""
if not os.path.isfile(self.thumb_path):
# if thumbnail is missing (if settings['make_thumbs'] is False)
if self.type == 'image':
generator = image.generate_thumbnail
elif self.type == 'video':
generator = video.generate_thumbnail
self.logger.debug('Generating thumbnail for %r', self)
generator(self.src_path, self.thumb_path,
self.settings['thumb_size'],
fit=self.settings['thumb_fit'])
return self.thumb_name
class Image(Media):
"""Gather all informations on an image file."""
type = 'image'
extensions = ('.jpg', '.jpeg', '.JPG', '.JPEG', '.png')
def __init__(self, filename, path, settings):
super(Image, self).__init__(filename, path, settings)
self.raw_exif, self.exif = get_exif_tags(self.src_path)
class Video(Media):
"""Gather all informations on a video file."""
type = 'video'
extensions = ('.MOV', '.mov', '.avi', '.mp4', '.webm', '.ogv')
def __init__(self, filename, path, settings):
super(Video, self).__init__(filename, path, settings)
base = os.path.splitext(filename)[0]
self.file_path = join(path, base + '.webm')
self.dst_path = join(settings['destination'], path, base + '.webm')
class Album(UnicodeMixin):
"""Gather all informations on an album.
Attributes:
:var description_file: Name of the Markdown file which gives information
on an album
:ivar index_url: URL to the index page.
:ivar output_file: Name of the output HTML file
:ivar meta: Meta data from the Markdown file.
:ivar description: description from the Markdown file.
For details how to annotate your albums with meta data, see
:doc:`album_information`.
"""
description_file = "index.md"
output_file = 'index.html'
def __init__(self, path, settings, dirnames, filenames, gallery):
self.path = path
self.name = path.split(os.path.sep)[-1]
self.gallery = gallery
self.settings = settings
self.orig_path = None
self._thumbnail = None
if path == '.':
self.src_path = settings['source']
self.dst_path = settings['destination']
else:
self.src_path = join(settings['source'], path)
self.dst_path = join(settings['destination'], path)
self.logger = logging.getLogger(__name__)
self._get_metadata()
# Create thumbnails directory and optionally the one for original img
check_or_create_dir(self.dst_path)
check_or_create_dir(join(self.dst_path, settings['thumb_dir']))
if settings['keep_orig']:
self.orig_path = join(self.dst_path, settings['orig_dir'])
check_or_create_dir(self.orig_path)
# optionally add index.html to the URLs
self.url_ext = self.output_file if settings['index_in_url'] else ''
self.url = self.name + '/' + self.url_ext
self.index_url = os.path.relpath(settings['destination'],
self.dst_path) + '/' + self.url_ext
# sort images and sub-albums by name
filenames.sort(**alpha_sort)
dirnames.sort(**alpha_sort)
self.subdirs = dirnames
#: List of all medias in the album (:class:`~sigal.gallery.Image` and
#: :class:`~sigal.gallery.Video`).
self.medias = []
self.medias_count = defaultdict(int)
for f in filenames:
ext = os.path.splitext(f)[1]
if ext in Image.extensions:
media = Image(f, self.path, settings)
elif ext in Video.extensions:
media = Video(f, self.path, settings)
else:
continue
self.medias_count[media.type] += 1
self.medias.append(media)
def __repr__(self):
return "<%s>(%r)" % (self.__class__.__name__, self.path)
def __unicode__(self):
return (u"{} : ".format(self.path) +
', '.join("{} {}s".format(count, _type)
for _type, count in self.medias_count.items()))
def __len__(self):
return len(self.medias)
def __iter__(self):
return iter(self.medias)
def _get_metadata(self):
"""Get album metadata from `description_file` (`index.md`):
-> title, thumbnail image, description
"""
descfile = join(self.src_path, self.description_file)
if isfile(descfile):
with codecs.open(descfile, "r", "utf-8") as f:
text = f.read()
md = markdown.Markdown(extensions=['meta'])
html = md.convert(text)
self.title = md.Meta.get('title', [''])[0]
self.description = html
self.meta = md.Meta.copy()
else:
# default: get title from directory name
self.title = os.path.basename(self.path).replace('_', ' ')\
.replace('-', ' ').capitalize()
self.description = ''
self.meta = {}
@property
def images(self):
"""List of images (:class:`~sigal.gallery.Image`)."""
for media in self.medias:
if media.type == 'image':
yield media
@property
def videos(self):
"""List of videos (:class:`~sigal.gallery.Video`)."""
for media in self.medias:
if media.type == 'video':
yield media
@property
def albums(self):
"""List of :class:`~sigal.gallery.Album` objects for each
sub-directory.
"""
root_path = self.path if self.path != '.' else ''
return [self.gallery.albums[join(root_path, path)]
for path in self.subdirs]
@property
def thumbnail(self):
"""Path to the thumbnail of the album."""
if self._thumbnail:
# stop if it is already set
return self._thumbnail
# Test the thumbnail from the Markdown file.
thumbnail = self.meta.get('thumbnail', [''])[0]
if thumbnail and isfile(join(self.src_path, thumbnail)):
self._thumbnail = join(self.name, get_thumb(self.settings,
thumbnail))
self.logger.debug("Thumbnail for %r : %s", self, self._thumbnail)
return self._thumbnail
else:
# find and return the first landscape image
for f in self.medias:
ext = os.path.splitext(f.filename)[1]
if ext in Image.extensions:
im = PILImage.open(f.src_path)
if im.size[0] > im.size[1]:
self._thumbnail = join(self.name, f.thumbnail)
self.logger.debug(
"Use 1st landscape image as thumbnail for %r : %s",
self, self._thumbnail)
return self._thumbnail
# else simply return the 1st media file
if not self._thumbnail and self.medias:
self._thumbnail = join(self.name, self.medias[0].thumbnail)
self.logger.debug("Use the 1st image as thumbnail for %r : %s",
self, self._thumbnail)
return self._thumbnail
# use the thumbnail of their sub-directories
if not self._thumbnail:
for path, album in self.gallery.get_albums(self.path):
if album.thumbnail:
self._thumbnail = join(self.name, album.thumbnail)
self.logger.debug(
"Using thumbnail from sub-directory for %r : %s",
self, self._thumbnail)
return self._thumbnail
self.logger.error('Thumbnail not found for %r', self)
return None
@property
def breadcrumb(self):
"""List of ``(url, title)`` tuples defining the current breadcrumb
path.
"""
if self.path == '.':
return []
path = self.path
breadcrumb = [((self.url_ext or '.'), self.title)]
while True:
path = os.path.normpath(os.path.join(path, '..'))
if path == '.':
break
url = os.path.relpath(path, self.path) + '/' + self.url_ext
breadcrumb.append((url, self.gallery.albums[path].title))
breadcrumb.reverse()
return breadcrumb
@property
def zip(self):
"""Make a ZIP archive with all media files and return its path.
If the ``zip_gallery`` setting is set,it contains the location of a zip
archive with all original images of the corresponding directory.
"""
zip_gallery = self.settings['zip_gallery']
if zip_gallery:
archive_path = join(self.dst_path, zip_gallery)
archive = zipfile.ZipFile(archive_path, 'w')
for p in self:
archive.write(p.dst_path, os.path.split(p.dst_path)[1])
archive.close()
self.logger.debug('Created ZIP archive %s', archive_path)
return zip_gallery
else:
return None
class Gallery(object):
def __init__(self, settings, theme=None, ncpu=None):
self.settings = settings
self.theme = theme
self.logger = logging.getLogger(__name__)
self.stats = {'image': 0, 'image_skipped': 0,
'video': 0, 'video_skipped': 0}
self.init_pool(ncpu)
check_or_create_dir(settings['destination'])
# Build the list of directories with images
albums = self.albums = {}
src_path = self.settings['source']
for path, dirs, files in os.walk(src_path, followlinks=True,
topdown=False):
relpath = os.path.relpath(path, src_path)
for d in dirs[:]:
path = join(relpath, d) if relpath != '.' else d
if path not in albums.keys():
dirs.remove(d)
album = Album(relpath, self.settings, dirs, files, self)
if not album.medias and not album.albums:
self.logger.info('Skip empty album: %r', album)
else:
albums[relpath] = album
self.logger.debug('Albums:\n%r', albums.values())
def init_pool(self, ncpu):
try:
cpu_count = multiprocessing.cpu_count()
except NotImplementedError:
cpu_count = 1
if ncpu is None:
ncpu = cpu_count
else:
try:
ncpu = int(ncpu)
except ValueError:
self.logger.error('ncpu should be an integer value')
ncpu = cpu_count
self.logger.info("Using %s cores", ncpu)
if ncpu > 1:
self.pool = multiprocessing.Pool(processes=ncpu)
else:
self.pool = None
def get_albums(self, path):
"""Return the list of all sub-directories of path."""
for name in self.albums[path].subdirs:
subdir = os.path.normpath(join(path, name))
yield subdir, self.albums[subdir]
for subname, album in self.get_albums(subdir):
yield subname, self.albums[subdir]
def build(self, force=False):
"Create the image gallery"
# loop on directories in reversed order, to process subdirectories
# before their parent
if self.pool:
media_list = []
processor = media_list.append
else:
processor = process_file
try:
for album in self.albums.values():
if len(album) > 0:
for files in self.process_dir(album, force=force):
processor(files)
except KeyboardInterrupt:
sys.exit('Interrupted')
if self.pool:
try:
# map_async is needed to handle KeyboardInterrupt correctly
self.pool.map_async(worker, media_list).get(9999)
self.pool.close()
self.pool.join()
except KeyboardInterrupt:
self.pool.terminate()
sys.exit('Interrupted')
print('')
if self.settings['write_html']:
self.writer = Writer(self.settings, theme=self.theme,
index_title=self.albums['.'].title)
for album in self.albums.values():
self.writer.write(album)
def process_dir(self, album, force=False):
"""Process a list of images in a directory."""
if sys.stdout.isatty():
print(colored('->', BLUE), str(album))
else:
self.logger.warn(album)
for f in album:
if isfile(f.dst_path) and not force:
self.logger.info("%s exists - skipping", f.filename)
self.stats[f.type + '_skipped'] += 1
else:
if self.settings['keep_orig']:
copy(f.src_path, join(album.orig_path, f.filename),
symlink=self.settings['orig_link'])
self.stats[f.type] += 1
yield f.type, f.src_path, album.dst_path, self.settings
def process_file(args):
ftype, src_path, dst_path, settings = args
logger = logging.getLogger(__name__)
logger.info('Processing %s', src_path)
if logger.getEffectiveLevel() > 20:
print('.', end='')
sys.stdout.flush()
if ftype == 'image':
return process_image(src_path, dst_path, settings)
elif ftype == 'video':
return process_video(src_path, dst_path, settings)
def worker(args):
try:
process_file(args)
except KeyboardInterrupt:
return 'KeyboardException'