%PDF-
%PDF-
Mini Shell
Mini Shell
__license__ = 'GPL v3'
__copyright__ = '2008, Kovid Goyal <kovid at kovidgoyal.net>'
''''''
import sys, array, os, re, codecs, logging
from itertools import chain
from calibre import setup_cli_handlers
from calibre.utils.config import OptionParser
from calibre.utils.filenames import ascii_filename
from calibre.ebooks.lrf.meta import LRFMetaFile
from calibre.ebooks.lrf.objects import get_object, PageTree, StyleObject, \
Font, Text, TOCObject, BookAttr, ruby_tags
from polyglot.builtins import itervalues
class LRFDocument(LRFMetaFile):
class temp:
pass
def __init__(self, stream):
LRFMetaFile.__init__(self, stream)
self.scramble_key = self.xor_key
self.page_trees = []
self.font_map = {}
self.image_map = {}
self.toc = ''
self.keep_parsing = True
def parse(self):
self._parse_objects()
self.metadata = LRFDocument.temp()
for a in ('title', 'title_reading', 'author', 'author_reading', 'book_id',
'classification', 'free_text', 'publisher', 'label', 'category'):
setattr(self.metadata, a, getattr(self, a))
self.doc_info = LRFDocument.temp()
for a in ('thumbnail', 'language', 'creator', 'producer', 'page'):
setattr(self.doc_info, a, getattr(self, a))
self.doc_info.thumbnail_extension = self.thumbail_extension()
self.device_info = LRFDocument.temp()
for a in ('dpi', 'width', 'height'):
setattr(self.device_info, a, getattr(self, a))
def _parse_objects(self):
self.objects = {}
self._file.seek(self.object_index_offset)
obj_array = array.array("I", self._file.read(4*4*self.number_of_objects))
if ord(array.array("i",[1]).tobytes()[0:1])==0: # big-endian
obj_array.byteswap()
for i in range(self.number_of_objects):
if not self.keep_parsing:
break
objid, objoff, objsize = obj_array[i*4:i*4+3]
self._parse_object(objid, objoff, objsize)
for obj in self.objects.values():
if not self.keep_parsing:
break
if hasattr(obj, 'initialize'):
obj.initialize()
def _parse_object(self, objid, objoff, objsize):
obj = get_object(self, self._file, objid, objoff, objsize, self.scramble_key)
self.objects[objid] = obj
if isinstance(obj, PageTree):
self.page_trees.append(obj)
elif isinstance(obj, TOCObject):
self.toc = obj
elif isinstance(obj, BookAttr):
self.ruby_tags = {}
for h in ruby_tags.values():
attr = h[0]
if hasattr(obj, attr):
self.ruby_tags[attr] = getattr(obj, attr)
def __iter__(self):
yield from self.page_trees
def write_files(self):
for obj in chain(itervalues(self.image_map), itervalues(self.font_map)):
with open(obj.file, 'wb') as f:
f.write(obj.stream)
def to_xml(self, write_files=True):
bookinfo = '<BookInformation>\n<Info version="1.1">\n<BookInfo>\n'
bookinfo += '<Title reading="%s">%s</Title>\n'%(self.metadata.title_reading, self.metadata.title)
bookinfo += '<Author reading="%s">%s</Author>\n'%(self.metadata.author_reading, self.metadata.author)
bookinfo += '<BookID>%s</BookID>\n'%(self.metadata.book_id,)
bookinfo += '<Publisher reading="">%s</Publisher>\n'%(self.metadata.publisher,)
bookinfo += '<Label reading="">%s</Label>\n'%(self.metadata.label,)
bookinfo += '<Category reading="">%s</Category>\n'%(self.metadata.category,)
bookinfo += '<Classification reading="">%s</Classification>\n'%(self.metadata.classification,)
bookinfo += '<FreeText reading="">%s</FreeText>\n</BookInfo>\n<DocInfo>\n'%(self.metadata.free_text,)
th = self.doc_info.thumbnail
if th:
prefix = ascii_filename(self.metadata.title)
bookinfo += '<CThumbnail file="%s" />\n'%(prefix+'_thumbnail.'+self.doc_info.thumbnail_extension,)
if write_files:
with open(prefix+'_thumbnail.'+self.doc_info.thumbnail_extension, 'wb') as f:
f.write(th)
bookinfo += '<Language reading="">%s</Language>\n'%(self.doc_info.language,)
bookinfo += '<Creator reading="">%s</Creator>\n'%(self.doc_info.creator,)
bookinfo += '<Producer reading="">%s</Producer>\n'%(self.doc_info.producer,)
bookinfo += '<SumPage>%s</SumPage>\n</DocInfo>\n</Info>\n%s</BookInformation>\n'%(self.doc_info.page,self.toc)
pages = ''
done_main = False
pt_id = -1
for page_tree in self:
if not done_main:
done_main = True
pages += '<Main>\n'
close = '</Main>\n'
pt_id = page_tree.id
else:
pages += '<PageTree objid="%d">\n'%(page_tree.id,)
close = '</PageTree>\n'
for page in page_tree:
pages += str(page)
pages += close
traversed_objects = [int(i) for i in re.findall(r'objid="(\w+)"', pages)] + [pt_id]
objects = '\n<Objects>\n'
styles = '\n<Style>\n'
for obj in self.objects:
obj = self.objects[obj]
if obj.id in traversed_objects:
continue
if isinstance(obj, (Font, Text, TOCObject)):
continue
if isinstance(obj, StyleObject):
styles += str(obj)
else:
objects += str(obj)
styles += '</Style>\n'
objects += '</Objects>\n'
if write_files:
self.write_files()
return '<BBeBXylog version="1.0">\n' + bookinfo + pages + styles + objects + '</BBeBXylog>'
def option_parser():
parser = OptionParser(usage=_('%prog book.lrf\nConvert an LRF file into an LRS (XML UTF-8 encoded) file'))
parser.add_option('--output', '-o', default=None, help=_('Output LRS file'), dest='out')
parser.add_option('--dont-output-resources', default=True, action='store_false',
help=_('Do not save embedded image and font files to disk'),
dest='output_resources')
parser.add_option('--verbose', default=False, action='store_true', dest='verbose', help=_('Be more verbose'))
return parser
def main(args=sys.argv, logger=None):
parser = option_parser()
opts, args = parser.parse_args(args)
if logger is None:
level = logging.DEBUG if opts.verbose else logging.INFO
logger = logging.getLogger('lrf2lrs')
setup_cli_handlers(logger, level)
if len(args) != 2:
parser.print_help()
return 1
if opts.out is None:
opts.out = os.path.join(os.path.dirname(args[1]), os.path.splitext(os.path.basename(args[1]))[0]+".lrs")
logger.info(_('Parsing LRF...'))
d = LRFDocument(open(args[1], 'rb'))
d.parse()
logger.info(_('Creating XML...'))
with codecs.open(os.path.abspath(os.path.expanduser(opts.out)), 'wb', 'utf-8') as f:
f.write('<?xml version="1.0" encoding="UTF-8"?>\n')
f.write(d.to_xml(write_files=opts.output_resources))
logger.info(_('LRS written to ')+opts.out)
return 0
if __name__ == '__main__':
sys.exit(main())
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