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parallel-library/cps/converter.py

149 lines
5.8 KiB
Python

#!/usr/bin/env python
# -*- coding: utf-8 -*-
import os
import sys
import subprocess
import ub
import db
import re
import web
from flask_babel import gettext as _
RET_FAIL = 0
RET_SUCCESS = 1
def versionKindle():
versions = _(u'not installed')
if os.path.exists(ub.config.config_converterpath):
try:
p = subprocess.Popen(ub.config.config_converterpath, stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.wait()
for lines in p.stdout.readlines():
if isinstance(lines, bytes):
lines = lines.decode('utf-8')
if re.search('Amazon kindlegen\(', lines):
versions = lines
except Exception:
versions = _(u'Excecution permissions missing')
return {'kindlegen' : versions}
def versionCalibre():
versions = _(u'not installed')
if os.path.exists(ub.config.config_converterpath):
try:
p = subprocess.Popen([ub.config.config_converterpath, '--version'], stdout=subprocess.PIPE, stderr=subprocess.PIPE)
p.wait()
for lines in p.stdout.readlines():
if isinstance(lines, bytes):
lines = lines.decode('utf-8')
if re.search('.*\(calibre', lines):
versions = lines
except Exception:
versions = _(u'Excecution permissions missing')
return {'Calibre converter' : versions}
def convert_kindlegen(file_path, book):
error_message = None
if not os.path.exists(ub.config.config_converterpath):
error_message = _(u"kindlegen binary %(kindlepath)s not found", kindlepath=ub.config.config_converterpath)
web.app.logger.error("convert_kindlegen: " + error_message)
return error_message, RET_FAIL
try:
p = subprocess.Popen((ub.config.config_converterpath + " \"" + file_path + u".epub\"").encode(sys.getfilesystemencoding()),
stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
except Exception as e:
error_message = _(u"kindlegen failed, no execution permissions")
web.app.logger.error("convert_kindlegen: " + error_message)
return error_message, RET_FAIL
# Poll process for new output until finished
while True:
nextline = p.stdout.readline()
if nextline == '' and p.poll() is not None:
break
if nextline != "\r\n":
# Format of error message (kindlegen translates its output texts):
# Error(prcgen):E23006: Language not recognized in metadata.The dc:Language field is mandatory.Aborting.
conv_error = re.search(".*\(.*\):(E\d+):\s(.*)", nextline)
# If error occoures, log in every case
if conv_error:
error_message = _(u"Kindlegen failed with Error %(error)s. Message: %(message)s",
error=conv_error.group(1), message=conv_error.group(2).decode('utf-8'))
web.app.logger.info("convert_kindlegen: " + error_message)
web.app.logger.info(nextline.strip('\r\n'))
else:
web.app.logger.debug(nextline.strip('\r\n'))
check = p.returncode
if not check or check < 2:
book.data.append(db.Data(
name=book.data[0].name,
book_format="MOBI",
book=book.id,
uncompressed_size=os.path.getsize(file_path + ".mobi")
))
db.session.commit()
return file_path + ".mobi", RET_SUCCESS
else:
web.app.logger.info("convert_kindlegen: kindlegen failed with error while converting book")
if not error_message:
error_message = 'kindlegen failed, no excecution permissions'
return error_message, RET_FAIL
def convert_calibre(file_path, book):
error_message = None
if not os.path.exists(ub.config.config_converterpath):
error_message = _(u"Ebook-convert binary %(converterpath)s not found", converterpath=ub.config.config_converterpath)
web.app.logger.error("convert_calibre: " + error_message)
return error_message, RET_FAIL
try:
command = ("\""+ub.config.config_converterpath + "\" " + ub.config.config_calibre +
" \"" + file_path + u".epub\" \"" + file_path + u".mobi\"").encode(sys.getfilesystemencoding())
p = subprocess.Popen(command,stdout=subprocess.PIPE, stderr=subprocess.PIPE, shell=True)
except Exception as e:
error_message = _(u"Ebook-convert failed, no execution permissions")
web.app.logger.error("convert_calibre: " + error_message)
return error_message, RET_FAIL
# Poll process for new output until finished
while True:
nextline = p.stdout.readline()
if nextline == '' and p.poll() is not None:
break
web.app.logger.debug(nextline.strip('\r\n').decode(sys.getfilesystemencoding()))
check = p.returncode
if check == 0 :
book.data.append(db.Data(
name=book.data[0].name,
book_format="MOBI",
book=book.id,
uncompressed_size=os.path.getsize(file_path + ".mobi")
))
db.session.commit()
return file_path + ".mobi", RET_SUCCESS
else:
web.app.logger.info("convert_calibre: Ebook-convert failed with error while converting book")
if not error_message:
error_message = 'Ebook-convert failed, no excecution permissions'
return error_message, RET_FAIL
def versioncheck():
if ub.config.config_ebookconverter == 1:
return versionKindle()
elif ub.config.config_ebookconverter == 2:
return versionCalibre()
else:
return {'ebook_converter':''}
def convert_mobi(file_path, book):
if ub.config.config_ebookconverter == 2:
return convert_calibre(file_path, book)
else:
return convert_kindlegen(file_path, book)