99 lines
3.2 KiB
Python
99 lines
3.2 KiB
Python
# -*- coding: utf-8 -*-
|
|
# vi:si:et:sw=4:sts=4:ts=4
|
|
|
|
|
|
import os
|
|
import xml.etree.ElementTree as ET
|
|
import zipfile
|
|
from io import StringIO
|
|
import re
|
|
|
|
from PIL import Image
|
|
import stdnum.isbn
|
|
|
|
from utils import normalize_isbn, find_isbns
|
|
|
|
import logging
|
|
logger = logging.getLogger('oml.media.epub')
|
|
|
|
def cover(path):
|
|
logger.debug('cover %s', path)
|
|
z = zipfile.ZipFile(path)
|
|
data = None
|
|
for f in z.filelist:
|
|
if 'cover' in f.filename.lower() and f.filename.split('.')[-1] in ('jpg', 'jpeg', 'png'):
|
|
logger.debug('using %s', f.filename)
|
|
data = z.read(f.filename)
|
|
break
|
|
if not data:
|
|
opf = [f.filename for f in z.filelist if f.filename.endswith('opf')]
|
|
if opf:
|
|
info = ET.fromstring(z.read(opf[0]))
|
|
manifest = info.findall('{http://www.idpf.org/2007/opf}manifest')[0]
|
|
for e in manifest.getchildren():
|
|
if 'image' in e.attrib['media-type']:
|
|
filename = e.attrib['href']
|
|
filename = os.path.normpath(os.path.join(os.path.dirname(opf[0]), filename))
|
|
data = z.read(filename)
|
|
break
|
|
elif 'html' in e.attrib['media-type']:
|
|
filename = e.attrib['href']
|
|
filename = os.path.normpath(os.path.join(os.path.dirname(opf[0]), filename))
|
|
html = z.read(filename)
|
|
img = re.compile('<img.*?src="(.*?)"').findall(html)
|
|
if img:
|
|
img = os.path.normpath(os.path.join(os.path.dirname(filename), img[0]))
|
|
logger.debug('using %s', img)
|
|
data = z.read(img)
|
|
break
|
|
if not data:
|
|
img = Image.new('RGB', (80, 128))
|
|
o = StringIO()
|
|
img.save(o, format='jpeg')
|
|
data = o.getvalue()
|
|
o.close()
|
|
return data
|
|
|
|
def info(epub):
|
|
data = {}
|
|
z = zipfile.ZipFile(epub)
|
|
opf = [f.filename for f in z.filelist if f.filename.endswith('opf')]
|
|
if opf:
|
|
info = ET.fromstring(z.read(opf[0]))
|
|
metadata = info.findall('{http://www.idpf.org/2007/opf}metadata')[0]
|
|
for e in metadata.getchildren():
|
|
if e.text:
|
|
key = e.tag.split('}')[-1]
|
|
key = {
|
|
'creator': 'author',
|
|
}.get(key, key)
|
|
value = e.text
|
|
if key == 'identifier':
|
|
value = normalize_isbn(value)
|
|
if stdnum.isbn.is_valid(value):
|
|
data['isbn'] = [value]
|
|
else:
|
|
data[key] = e.text
|
|
text = extract_text(epub)
|
|
data['textsize'] = len(text)
|
|
if not 'isbn' in data:
|
|
isbn = extract_isbn(text)
|
|
if isbn:
|
|
data['isbn'] = [isbn]
|
|
if 'date' in data and 'T' in data['date']:
|
|
data['date'] = data['date'].split('T')[0]
|
|
return data
|
|
|
|
def extract_text(path):
|
|
data = b''
|
|
z = zipfile.ZipFile(path)
|
|
for f in z.filelist:
|
|
if f.filename.endswith('html'):
|
|
data += z.read(f.filename)
|
|
return data
|
|
|
|
def extract_isbn(data):
|
|
isbns = find_isbns(data)
|
|
if isbns:
|
|
return isbns[0]
|
|
|