Current File : //usr/lib/calibre/calibre/ebooks/conversion/plugins/pml_output.py
__license__ = 'GPL 3'
__copyright__ = '2009, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
import os, io
from calibre.customize.conversion import (OutputFormatPlugin,
OptionRecommendation)
from calibre.ptempfile import TemporaryDirectory
class PMLOutput(OutputFormatPlugin):
name = 'PML Output'
author = 'John Schember'
file_type = 'pmlz'
commit_name = 'pml_output'
options = {
OptionRecommendation(name='pml_output_encoding', recommended_value='cp1252',
level=OptionRecommendation.LOW,
help=_('Specify the character encoding of the output document. '
'The default is cp1252.')),
OptionRecommendation(name='inline_toc',
recommended_value=False, level=OptionRecommendation.LOW,
help=_('Add Table of Contents to beginning of the book.')),
OptionRecommendation(name='full_image_depth',
recommended_value=False, level=OptionRecommendation.LOW,
help=_('Do not reduce the size or bit depth of images. Images '
'have their size and depth reduced by default to accommodate '
'applications that can not convert images on their '
'own such as Dropbook.')),
}
def convert(self, oeb_book, output_path, input_plugin, opts, log):
from calibre.ebooks.pml.pmlml import PMLMLizer
from calibre.utils.zipfile import ZipFile
with TemporaryDirectory('_pmlz_output') as tdir:
pmlmlizer = PMLMLizer(log)
pml = str(pmlmlizer.extract_content(oeb_book, opts))
with lopen(os.path.join(tdir, 'index.pml'), 'wb') as out:
out.write(pml.encode(opts.pml_output_encoding, 'replace'))
img_path = os.path.join(tdir, 'index_img')
if not os.path.exists(img_path):
os.makedirs(img_path)
self.write_images(oeb_book.manifest, pmlmlizer.image_hrefs, img_path, opts)
log.debug('Compressing output...')
pmlz = ZipFile(output_path, 'w')
pmlz.add_dir(tdir)
def write_images(self, manifest, image_hrefs, out_dir, opts):
from PIL import Image
from calibre.ebooks.oeb.base import OEB_RASTER_IMAGES
for item in manifest:
if item.media_type in OEB_RASTER_IMAGES and item.href in image_hrefs.keys():
if opts.full_image_depth:
im = Image.open(io.BytesIO(item.data))
else:
im = Image.open(io.BytesIO(item.data)).convert('P')
im.thumbnail((300,300), Image.ANTIALIAS)
data = io.BytesIO()
im.save(data, 'PNG')
data = data.getvalue()
path = os.path.join(out_dir, image_hrefs[item.href])
with lopen(path, 'wb') as out:
out.write(data)
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