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Mini Shell
Mini Shell
__license__ = 'GPL v3'
__copyright__ = '2009, John Schember <john@nachtimwald.com>'
__docformat__ = 'restructuredtext en'
import glob
import os
import shutil
from calibre.customize.conversion import InputFormatPlugin
from calibre.ptempfile import TemporaryDirectory
class PMLInput(InputFormatPlugin):
name = 'PML Input'
author = 'John Schember'
description = _('Convert PML to OEB')
# pmlz is a zip file containing pml files and png images.
file_types = {'pml', 'pmlz'}
commit_name = 'pml_input'
def process_pml(self, pml_path, html_path, close_all=False):
from calibre.ebooks.pml.pmlconverter import PML_HTMLizer
pclose = False
hclose = False
if not hasattr(pml_path, 'read'):
pml_stream = lopen(pml_path, 'rb')
pclose = True
else:
pml_stream = pml_path
pml_stream.seek(0)
if not hasattr(html_path, 'write'):
html_stream = lopen(html_path, 'wb')
hclose = True
else:
html_stream = html_path
ienc = getattr(pml_stream, 'encoding', None)
if ienc is None:
ienc = 'cp1252'
if self.options.input_encoding:
ienc = self.options.input_encoding
self.log.debug('Converting PML to HTML...')
hizer = PML_HTMLizer()
html = hizer.parse_pml(pml_stream.read().decode(ienc), html_path)
html = '<html><head><title></title></head><body>%s</body></html>'%html
html_stream.write(html.encode('utf-8', 'replace'))
if pclose:
pml_stream.close()
if hclose:
html_stream.close()
return hizer.get_toc()
def get_images(self, stream, tdir, top_level=False):
images = []
imgs = []
if top_level:
imgs = glob.glob(os.path.join(tdir, '*.png'))
# Images not in top level try bookname_img directory because
# that's where Dropbook likes to see them.
if not imgs:
if hasattr(stream, 'name'):
imgs = glob.glob(os.path.join(tdir, os.path.splitext(os.path.basename(stream.name))[0] + '_img', '*.png'))
# No images in Dropbook location try generic images directory
if not imgs:
imgs = glob.glob(os.path.join(os.path.join(tdir, 'images'), '*.png'))
if imgs:
os.makedirs(os.path.join(os.getcwd(), 'images'))
for img in imgs:
pimg_name = os.path.basename(img)
pimg_path = os.path.join(os.getcwd(), 'images', pimg_name)
images.append('images/' + pimg_name)
shutil.copy(img, pimg_path)
return images
def convert(self, stream, options, file_ext, log,
accelerators):
from calibre.ebooks.metadata.toc import TOC
from calibre.ebooks.metadata.opf2 import OPFCreator
from calibre.utils.zipfile import ZipFile
self.options = options
self.log = log
pages, images = [], []
toc = TOC()
if file_ext == 'pmlz':
log.debug('De-compressing content to temporary directory...')
with TemporaryDirectory('_unpmlz') as tdir:
zf = ZipFile(stream)
zf.extractall(tdir)
pmls = glob.glob(os.path.join(tdir, '*.pml'))
for pml in pmls:
html_name = os.path.splitext(os.path.basename(pml))[0]+'.html'
html_path = os.path.join(os.getcwd(), html_name)
pages.append(html_name)
log.debug('Processing PML item %s...' % pml)
ttoc = self.process_pml(pml, html_path)
toc += ttoc
images = self.get_images(stream, tdir, True)
else:
toc = self.process_pml(stream, 'index.html')
pages.append('index.html')
if hasattr(stream, 'name'):
images = self.get_images(stream, os.path.abspath(os.path.dirname(stream.name)))
# We want pages to be ordered alphabetically.
pages.sort()
manifest_items = []
for item in pages+images:
manifest_items.append((item, None))
from calibre.ebooks.metadata.meta import get_metadata
log.debug('Reading metadata from input file...')
mi = get_metadata(stream, 'pml')
if 'images/cover.png' in images:
mi.cover = 'images/cover.png'
opf = OPFCreator(os.getcwd(), mi)
log.debug('Generating manifest...')
opf.create_manifest(manifest_items)
opf.create_spine(pages)
opf.set_toc(toc)
with lopen('metadata.opf', 'wb') as opffile:
with lopen('toc.ncx', 'wb') as tocfile:
opf.render(opffile, tocfile, 'toc.ncx')
return os.path.join(os.getcwd(), 'metadata.opf')
def postprocess_book(self, oeb, opts, log):
from calibre.ebooks.oeb.base import XHTML, barename
for item in oeb.spine:
if hasattr(item.data, 'xpath'):
for heading in item.data.iterdescendants(*map(XHTML, 'h1 h2 h3 h4 h5 h6'.split())):
if not len(heading):
continue
span = heading[0]
if not heading.text and not span.text and not len(span) and barename(span.tag) == 'span':
if not heading.get('id') and span.get('id'):
heading.set('id', span.get('id'))
heading.text = span.tail
heading.remove(span)
if len(heading) == 1 and heading[0].get('style') == 'text-align: center; margin: auto;':
div = heading[0]
if barename(div.tag) == 'div' and not len(div) and not div.get('id') and not heading.get('style'):
heading.text = (heading.text or '') + (div.text or '') + (div.tail or '')
heading.remove(div)
heading.set('style', 'text-align: center')
Zerion Mini Shell 1.0