calibre-web/cps/helper.py

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
from cps import db, ub
from cps import config
import smtplib
import sys
import os
import traceback
import re
import unicodedata
from StringIO import StringIO
from email import encoders
from email.MIMEBase import MIMEBase
from email.MIMEMultipart import MIMEMultipart
from email.MIMEText import MIMEText
from email.generator import Generator
import subprocess
def update_download(book_id, user_id):
check = ub.session.query(ub.Downloads).filter(ub.Downloads.user_id == user_id).filter(ub.Downloads.book_id == book_id).first()
if not check:
new_download = ub.Downloads(user_id=user_id, book_id=book_id)
ub.session.add(new_download)
ub.session.commit()
def make_mobi(book_id):
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kindlegen = os.path.join(config.MAIN_DIR, "vendor", "kindlegen")
if not os.path.exists(kindlegen):
return False
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
file_path = os.path.join(config.DB_ROOT, book.path, book.data[0].name)
# print os.path.getsize(file_path + ".epub")
if os.path.exists(file_path + ".epub") and not os.path.exists(file_path + ".mobi"):
# print u"conversion started for %s" % book.title
check = subprocess.call([kindlegen, file_path + ".epub"], stdout=subprocess.PIPE)
if not check or check < 2:
book.data.append(db.Data(
name=book.data[0].name,
format="MOBI",
book=book.id,
uncompressed_size=os.path.getsize(file_path + ".mobi")
))
db.session.commit()
return file_path + ".mobi"
else:
return False
else:
return file_path + ".mobi"
def send_mail(book_id, kindle_mail):
'''Send email with attachments'''
is_mobi = False
is_epub = False
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settings = ub.get_mail_settings()
# create MIME message
msg = MIMEMultipart()
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msg['From'] = settings["mail_from"]
msg['To'] = kindle_mail
msg['Subject'] = 'Sent to Kindle'
text = 'This email has been automatically sent by library.'
msg.attach(MIMEText(text))
# attach files
#msg.attach(self.get_attachment(file_path))
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
for format in book.data:
if format.format == "MOBI":
is_mobi == True
if format.format == "EPUB":
is_epub = True
if is_mobi:
file_path = os.path.join(config.DB_ROOT, book.path, format.name + ".mobi")
if is_epub and not is_mobi:
file_path = make_mobi(book.id)
if file_path:
msg.attach(get_attachment(file_path))
else:
return False
#sys.exit()
# convert MIME message to string
fp = StringIO()
gen = Generator(fp, mangle_from_=False)
gen.flatten(msg)
msg = fp.getvalue()
# send email
try:
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mail_server = smtplib.SMTP(host=settings["mail_server"],
port=settings["mail_port"])
mail_server.login(settings["mail_login"], settings["mail_password"])
mail_server.sendmail(settings["mail_login"], kindle_mail, msg)
mail_server.close()
except smtplib.SMTPException:
traceback.print_exc()
return False
#sys.exit(7)
return True
def get_attachment(file_path):
'''Get file as MIMEBase message'''
try:
file_ = open(file_path, 'rb')
attachment = MIMEBase('application', 'octet-stream')
attachment.set_payload(file_.read())
file_.close()
encoders.encode_base64(attachment)
attachment.add_header('Content-Disposition', 'attachment',
filename=os.path.basename(file_path))
return attachment
except IOError:
traceback.print_exc()
message = ('The requested file could not be read. Maybe wrong '
'permissions?')
return None
def get_valid_filename(value):
"""
Returns the given string converted to a string that can be used for a clean
filename. Limits num characters to 128 max.
"""
value = value[:128]
re_slugify = re.compile('[^\w\s-]', re.UNICODE)
value = unicodedata.normalize('NFKD', value)
re_slugify = re.compile('[^\w\s-]', re.UNICODE)
value = unicode(re_slugify.sub('', value).strip())
value = re.sub('[\s]+', '_', value, flags=re.U)
return value
def get_normalized_author(value):
"""
Normalizes sorted author name
"""
value = unicodedata.normalize('NFKD', value)
value = re.sub('[^\w,\s]', '', value, flags=re.U)
value = " ".join(value.split(", ")[::-1])
return value