self-hosted/calibre-web
1
0
Fork 0
mirror of https://github.com/janeczku/calibre-web.git synced 2024-11-30 09:07:17 +02:00
Code Issues Releases Activity
97a0dccdec
calibre-web/cps/helper.py
Ozzieisaacs 5c6be5d6d0 Fix for python 3 and existing unrar entry in db 
deleted unnecessary lines in config html template
2019-07-21 12:58:48 +02:00

781 lines
32 KiB
Python
Raw Blame History

# -*- coding: utf-8 -*-
# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
# Copyright (C) 2012-2019 cervinko, idalin, SiphonSquirrel, ouzklcn, akushsky,
# OzzieIsaacs, bodybybuddha, jkrehm, matthazinski, janeczku
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
from __future__ import division, print_function, unicode_literals
import sys
import os
import io
import json
import mimetypes
import random
import re
import shutil
import time
import unicodedata
from datetime import datetime, timedelta
from tempfile import gettempdir
import requests
from babel import Locale as LC
from babel.core import UnknownLocaleError
from babel.dates import format_datetime
from babel.units import format_unit
from flask import send_from_directory, make_response, redirect, abort
from flask_babel import gettext as _
from flask_login import current_user
from sqlalchemy.sql.expression import true, false, and_, or_, text, func
from werkzeug.datastructures import Headers
try:
from urllib.parse import quote
except ImportError:
from urllib import quote
try:
import unidecode
use_unidecode = True
except ImportError:
use_unidecode = False
try:
from PIL import Image
use_PIL = True
except ImportError:
use_PIL = False
from . import logger, config, get_locale, db, ub, isoLanguages, worker
from . import gdriveutils as gd
from .constants import STATIC_DIR as _STATIC_DIR
from .pagination import Pagination
from .subproc_wrapper import process_wait
from .worker import STAT_WAITING, STAT_FAIL, STAT_STARTED, STAT_FINISH_SUCCESS
from .worker import TASK_EMAIL, TASK_CONVERT, TASK_UPLOAD, TASK_CONVERT_ANY
log = logger.create()
# Convert existing book entry to new format
def convert_book_format(book_id, calibrepath, old_book_format, new_book_format, user_id, kindle_mail=None):
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
data = db.session.query(db.Data).filter(db.Data.book == book.id).filter(db.Data.format == old_book_format).first()
if not data:
error_message = _(u"%(format)s format not found for book id: %(book)d", format=old_book_format, book=book_id)
log.error("convert_book_format: %s", error_message)
return error_message
if config.config_use_google_drive:
df = gd.getFileFromEbooksFolder(book.path, data.name + "." + old_book_format.lower())
if df:
datafile = os.path.join(calibrepath, book.path, data.name + u"." + old_book_format.lower())
if not os.path.exists(os.path.join(calibrepath, book.path)):
os.makedirs(os.path.join(calibrepath, book.path))
df.GetContentFile(datafile)
else:
error_message = _(u"%(format)s not found on Google Drive: %(fn)s",
format=old_book_format, fn=data.name + "." + old_book_format.lower())
return error_message
file_path = os.path.join(calibrepath, book.path, data.name)
if os.path.exists(file_path + "." + old_book_format.lower()):
# read settings and append converter task to queue
if kindle_mail:
settings = config.get_mail_settings()
settings['subject'] = _('Send to Kindle') # pretranslate Subject for e-mail
settings['body'] = _(u'This e-mail has been sent via Calibre-Web.')
# text = _(u"%(format)s: %(book)s", format=new_book_format, book=book.title)
else:
settings = dict()
text = (u"%s -> %s: %s" % (old_book_format, new_book_format, book.title))
settings['old_book_format'] = old_book_format
settings['new_book_format'] = new_book_format
worker.add_convert(file_path, book.id, user_id, text, settings, kindle_mail)
return None
else:
error_message = _(u"%(format)s not found: %(fn)s",
format=old_book_format, fn=data.name + "." + old_book_format.lower())
return error_message
def send_test_mail(kindle_mail, user_name):
worker.add_email(_(u'Calibre-Web test e-mail'), None, None,
config.get_mail_settings(), kindle_mail, user_name,
_(u"Test e-mail"), _(u'This e-mail has been sent via Calibre-Web.'))
return
# Send registration email or password reset email, depending on parameter resend (False means welcome email)
def send_registration_mail(e_mail, user_name, default_password, resend=False):
text = "Hello %s!\r\n" % user_name
if not resend:
text += "Your new account at Calibre-Web has been created. Thanks for joining us!\r\n"
text += "Please log in to your account using the following informations:\r\n"
text += "User name: %s\n" % user_name
text += "Password: %s\r\n" % default_password
text += "Don't forget to change your password after first login.\r\n"
text += "Sincerely\r\n\r\n"
text += "Your Calibre-Web team"
worker.add_email(_(u'Get Started with Calibre-Web'), None, None,
config.get_mail_settings(), e_mail, None,
_(u"Registration e-mail for user: %(name)s", name=user_name), text)
return
def check_send_to_kindle(entry):
"""
returns all available book formats for sending to Kindle
"""
if len(entry.data):
bookformats=list()
if config.config_ebookconverter == 0:
# no converter - only for mobi and pdf formats
for ele in iter(entry.data):
if 'MOBI' in ele.format:
bookformats.append({'format':'Mobi','convert':0,'text':_('Send %(format)s to Kindle',format='Mobi')})
if 'PDF' in ele.format:
bookformats.append({'format':'Pdf','convert':0,'text':_('Send %(format)s to Kindle',format='Pdf')})
if 'AZW' in ele.format:
bookformats.append({'format':'Azw','convert':0,'text':_('Send %(format)s to Kindle',format='Azw')})
'''if 'AZW3' in ele.format:
bookformats.append({'format':'Azw3','convert':0,'text':_('Send %(format)s to Kindle',format='Azw3')})'''
else:
formats = list()
for ele in iter(entry.data):
formats.append(ele.format)
if 'MOBI' in formats:
bookformats.append({'format': 'Mobi','convert':0,'text':_('Send %(format)s to Kindle',format='Mobi')})
if 'AZW' in formats:
bookformats.append({'format': 'Azw','convert':0,'text':_('Send %(format)s to Kindle',format='Azw')})
if 'PDF' in formats:
bookformats.append({'format': 'Pdf','convert':0,'text':_('Send %(format)s to Kindle',format='Pdf')})
if config.config_ebookconverter >= 1:
if 'EPUB' in formats and not 'MOBI' in formats:
bookformats.append({'format': 'Mobi','convert':1,
'text':_('Convert %(orig)s to %(format)s and send to Kindle',orig='Epub',format='Mobi')})
'''if config.config_ebookconverter == 2:
if 'EPUB' in formats and not 'AZW3' in formats:
bookformats.append({'format': 'Azw3','convert':1,
'text':_('Convert %(orig)s to %(format)s and send to Kindle',orig='Epub',format='Azw3')})'''
return bookformats
else:
log.error(u'Cannot find book entry %d', entry.id)
return None
# Check if a reader is existing for any of the book formats, if not, return empty list, otherwise return
# list with supported formats
def check_read_formats(entry):
EXTENSIONS_READER = {'TXT', 'PDF', 'EPUB', 'CBZ', 'CBT', 'CBR'}
bookformats = list()
if len(entry.data):
for ele in iter(entry.data):
if ele.format in EXTENSIONS_READER:
bookformats.append(ele.format.lower())
return bookformats
# Files are processed in the following order/priority:
# 1: If Mobi file is existing, it's directly send to kindle email,
# 2: If Epub file is existing, it's converted and send to kindle email,
# 3: If Pdf file is existing, it's directly send to kindle email
def send_mail(book_id, book_format, convert, kindle_mail, calibrepath, user_id):
"""Send email with attachments"""
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
if convert:
# returns None if success, otherwise errormessage
return convert_book_format(book_id, calibrepath, u'epub', book_format.lower(), user_id, kindle_mail)
for entry in iter(book.data):
if entry.format.upper() == book_format.upper():
converted_file_name = entry.name + '.' + book_format.lower()
worker.add_email(_(u"Send to Kindle"), book.path, converted_file_name,
config.get_mail_settings(), kindle_mail, user_id,
_(u"E-mail: %(book)s", book=book.title), _(u'This e-mail has been sent via Calibre-Web.'))
return
return _(u"The requested file could not be read. Maybe wrong permissions?")
def get_valid_filename(value, replace_whitespace=True):
"""
Returns the given string converted to a string that can be used for a clean
filename. Limits num characters to 128 max.
"""
if value[-1:] == u'.':
value = value[:-1]+u'_'
value = value.replace("/", "_").replace(":", "_").strip('\0')
if use_unidecode:
value = (unidecode.unidecode(value)).strip()
else:
value = value.replace(u'§', u'SS')
value = value.replace(u'ß', u'ss')
value = unicodedata.normalize('NFKD', value)
re_slugify = re.compile(r'[\W\s-]', re.UNICODE)
if isinstance(value, str): # Python3 str, Python2 unicode
value = re_slugify.sub('', value).strip()
else:
value = unicode(re_slugify.sub('', value).strip())
if replace_whitespace:
# *+:\"/<>? are replaced by _
value = re.sub(r'[\*\+:\\\"/<>\?]+', u'_', value, flags=re.U)
# pipe has to be replaced with comma
value = re.sub(r'[\|]+', u',', value, flags=re.U)
value = value[:128]
if not value:
raise ValueError("Filename cannot be empty")
if sys.version_info.major == 3:
return value
else:
return value.decode('utf-8')
def get_sorted_author(value):
try:
if ',' not in value:
regexes = [r"^(JR|SR)\.?$", r"^I{1,3}\.?$", r"^IV\.?$"]
combined = "(" + ")|(".join(regexes) + ")"
value = value.split(" ")
if re.match(combined, value[-1].upper()):
value2 = value[-2] + ", " + " ".join(value[:-2]) + " " + value[-1]
elif len(value) == 1:
value2 = value[0]
else:
value2 = value[-1] + ", " + " ".join(value[:-1])
else:
value2 = value
except Exception as ex:
log.error("Sorting author %s failed: %s", value, ex)
value2 = value
return value2
# Deletes a book fro the local filestorage, returns True if deleting is successfull, otherwise false
def delete_book_file(book, calibrepath, book_format=None):
# check that path is 2 elements deep, check that target path has no subfolders
if book.path.count('/') == 1:
path = os.path.join(calibrepath, book.path)
if book_format:
for file in os.listdir(path):
if file.upper().endswith("."+book_format):
os.remove(os.path.join(path, file))
else:
if os.path.isdir(path):
if len(next(os.walk(path))[1]):
log.error("Deleting book %s failed, path has subfolders: %s", book.id, book.path)
return False
shutil.rmtree(path, ignore_errors=True)
return True
else:
log.error("Deleting book %s failed, book path not valid: %s", book.id, book.path)
return False
def update_dir_structure_file(book_id, calibrepath, first_author):
localbook = db.session.query(db.Books).filter(db.Books.id == book_id).first()
path = os.path.join(calibrepath, localbook.path)
authordir = localbook.path.split('/')[0]
if first_author:
new_authordir = get_valid_filename(first_author)
else:
new_authordir = get_valid_filename(localbook.authors[0].name)
titledir = localbook.path.split('/')[1]
new_titledir = get_valid_filename(localbook.title) + " (" + str(book_id) + ")"
if titledir != new_titledir:
try:
new_title_path = os.path.join(os.path.dirname(path), new_titledir)
if not os.path.exists(new_title_path):
os.renames(path, new_title_path)
else:
log.info("Copying title: %s into existing: %s", path, new_title_path)
for dir_name, __, file_list in os.walk(path):
for file in file_list:
os.renames(os.path.join(dir_name, file),
os.path.join(new_title_path + dir_name[len(path):], file))
path = new_title_path
localbook.path = localbook.path.split('/')[0] + '/' + new_titledir
except OSError as ex:
log.error("Rename title from: %s to %s: %s", path, new_title_path, ex)
log.debug(ex, exc_info=True)
return _("Rename title from: '%(src)s' to '%(dest)s' failed with error: %(error)s",
src=path, dest=new_title_path, error=str(ex))
if authordir != new_authordir:
try:
new_author_path = os.path.join(calibrepath, new_authordir, os.path.basename(path))
os.renames(path, new_author_path)
localbook.path = new_authordir + '/' + localbook.path.split('/')[1]
except OSError as ex:
log.error("Rename author from: %s to %s: %s", path, new_author_path, ex)
log.debug(ex, exc_info=True)
return _("Rename author from: '%(src)s' to '%(dest)s' failed with error: %(error)s",
src=path, dest=new_author_path, error=str(ex))
# Rename all files from old names to new names
if authordir != new_authordir or titledir != new_titledir:
try:
new_name = get_valid_filename(localbook.title) + ' - ' + get_valid_filename(new_authordir)
path_name = os.path.join(calibrepath, new_authordir, os.path.basename(path))
for file_format in localbook.data:
os.renames(os.path.join(path_name, file_format.name + '.' + file_format.format.lower()),
os.path.join(path_name, new_name + '.' + file_format.format.lower()))
file_format.name = new_name
except OSError as ex:
log.error("Rename file in path %s to %s: %s", path, new_name, ex)
log.debug(ex, exc_info=True)
return _("Rename file in path '%(src)s' to '%(dest)s' failed with error: %(error)s",
src=path, dest=new_name, error=str(ex))
return False
def update_dir_structure_gdrive(book_id, first_author):
error = False
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
path = book.path
authordir = book.path.split('/')[0]
if first_author:
new_authordir = get_valid_filename(first_author)
else:
new_authordir = get_valid_filename(book.authors[0].name)
titledir = book.path.split('/')[1]
new_titledir = get_valid_filename(book.title) + u" (" + str(book_id) + u")"
if titledir != new_titledir:
gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path), titledir)
if gFile:
gFile['title'] = new_titledir
gFile.Upload()
book.path = book.path.split('/')[0] + u'/' + new_titledir
path = book.path
gd.updateDatabaseOnEdit(gFile['id'], book.path) # only child folder affected
else:
error = _(u'File %(file)s not found on Google Drive', file=book.path) # file not found
if authordir != new_authordir:
gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path), new_titledir)
if gFile:
gd.moveGdriveFolderRemote(gFile, new_authordir)
book.path = new_authordir + u'/' + book.path.split('/')[1]
path = book.path
gd.updateDatabaseOnEdit(gFile['id'], book.path)
else:
error = _(u'File %(file)s not found on Google Drive', file=authordir) # file not found
# Rename all files from old names to new names
if authordir != new_authordir or titledir != new_titledir:
new_name = get_valid_filename(book.title) + u' - ' + get_valid_filename(new_authordir)
for file_format in book.data:
gFile = gd.getFileFromEbooksFolder(path, file_format.name + u'.' + file_format.format.lower())
if not gFile:
error = _(u'File %(file)s not found on Google Drive', file=file_format.name) # file not found
break
gd.moveGdriveFileRemote(gFile, new_name + u'.' + file_format.format.lower())
file_format.name = new_name
return error
def delete_book_gdrive(book, book_format):
error= False
if book_format:
name = ''
for entry in book.data:
if entry.format.upper() == book_format:
name = entry.name + '.' + book_format
gFile = gd.getFileFromEbooksFolder(book.path, name)
else:
gFile = gd.getFileFromEbooksFolder(os.path.dirname(book.path),book.path.split('/')[1])
if gFile:
gd.deleteDatabaseEntry(gFile['id'])
gFile.Trash()
else:
error =_(u'Book path %(path)s not found on Google Drive', path=book.path) # file not found
return error
def generate_random_password():
s = "abcdefghijklmnopqrstuvwxyz01234567890ABCDEFGHIJKLMNOPQRSTUVWXYZ!@#$%&*()?"
passlen = 8
return "".join(random.sample(s,passlen ))
################################## External interface
def update_dir_stucture(book_id, calibrepath, first_author = None):
if config.config_use_google_drive:
return update_dir_structure_gdrive(book_id, first_author)
else:
return update_dir_structure_file(book_id, calibrepath, first_author)
def delete_book(book, calibrepath, book_format):
if config.config_use_google_drive:
return delete_book_gdrive(book, book_format)
else:
return delete_book_file(book, calibrepath, book_format)
def get_book_cover(book_id):
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
if book.has_cover:
if config.config_use_google_drive:
try:
if not gd.is_gdrive_ready():
return send_from_directory(_STATIC_DIR, "generic_cover.jpg")
path=gd.get_cover_via_gdrive(book.path)
if path:
return redirect(path)
else:
log.error('%s/cover.jpg not found on Google Drive', book.path)
return send_from_directory(_STATIC_DIR, "generic_cover.jpg")
except Exception as e:
log.exception(e)
# traceback.print_exc()
return send_from_directory(_STATIC_DIR,"generic_cover.jpg")
else:
cover_file_path = os.path.join(config.config_calibre_dir, book.path)
if os.path.isfile(os.path.join(cover_file_path, "cover.jpg")):
return send_from_directory(cover_file_path, "cover.jpg")
else:
return send_from_directory(_STATIC_DIR,"generic_cover.jpg")
else:
return send_from_directory(_STATIC_DIR,"generic_cover.jpg")
# saves book cover from url
def save_cover_from_url(url, book_path):
img = requests.get(url)
return save_cover(img, book_path)
def save_cover_from_filestorage(filepath, saved_filename, img):
if hasattr(img, '_content'):
f = open(os.path.join(filepath, saved_filename), "wb")
f.write(img._content)
f.close()
else:
# check if file path exists, otherwise create it, copy file to calibre path and delete temp file
if not os.path.exists(filepath):
try:
os.makedirs(filepath)
except OSError:
log.error(u"Failed to create path for cover")
return False
try:
img.save(os.path.join(filepath, saved_filename))
except IOError:
log.error(u"Cover-file is not a valid image file")
return False
except OSError:
log.error(u"Failed to store cover-file")
return False
return True
# saves book cover to gdrive or locally
def save_cover(img, book_path):
content_type = img.headers.get('content-type')
if use_PIL:
if content_type not in ('image/jpeg', 'image/png', 'image/webp'):
log.error("Only jpg/jpeg/png/webp files are supported as coverfile")
return False
# convert to jpg because calibre only supports jpg
if content_type in ('image/png', 'image/webp'):
if hasattr(img,'stream'):
imgc = Image.open(img.stream)
else:
imgc = Image.open(io.BytesIO(img.content))
im = imgc.convert('RGB')
tmp_bytesio = io.BytesIO()
im.save(tmp_bytesio, format='JPEG')
img._content = tmp_bytesio.getvalue()
else:
if content_type not in ('image/jpeg'):
log.error("Only jpg/jpeg files are supported as coverfile")
return False
if ub.config.config_use_google_drive:
tmpDir = gettempdir()
if save_cover_from_filestorage(tmpDir, "uploaded_cover.jpg", img) is True:
gd.uploadFileToEbooksFolder(os.path.join(book_path, 'cover.jpg'),
os.path.join(tmpDir, "uploaded_cover.jpg"))
log.info("Cover is saved on Google Drive")
return True
else:
return False
else:
return save_cover_from_filestorage(os.path.join(config.config_calibre_dir, book_path), "cover.jpg", img)
def do_download_file(book, book_format, data, headers):
if config.config_use_google_drive:
startTime = time.time()
df = gd.getFileFromEbooksFolder(book.path, data.name + "." + book_format)
log.debug('%s', time.time() - startTime)
if df:
return gd.do_gdrive_download(df, headers)
else:
abort(404)
else:
filename = os.path.join(config.config_calibre_dir, book.path)
if not os.path.isfile(os.path.join(filename, data.name + "." + book_format)):
# ToDo: improve error handling
log.error('File not found: %s', os.path.join(filename, data.name + "." + book_format))
response = make_response(send_from_directory(filename, data.name + "." + book_format))
response.headers = headers
return response
##################################
def check_unrar(unrarLocation):
if not unrarLocation:
return
if not os.path.exists(unrarLocation):
return 'Unrar binary file not found'
try:
if sys.version_info < (3, 0):
unrarLocation = unrarLocation.encode(sys.getfilesystemencoding())
unrarLocation = [unrarLocation]
for lines in process_wait(unrarLocation):
value = re.search('UNRAR (.*) freeware', lines)
if value:
version = value.group(1)
log.debug("unrar version %s", version)
except OSError as err:
log.exception(err)
return 'Error excecuting UnRar'
def json_serial(obj):
"""JSON serializer for objects not serializable by default json code"""
if isinstance(obj, (datetime)):
return obj.isoformat()
if isinstance(obj, (timedelta)):
return {
'__type__': 'timedelta',
'days': obj.days,
'seconds': obj.seconds,
'microseconds': obj.microseconds,
}
# return obj.isoformat()
raise TypeError ("Type %s not serializable" % type(obj))
# helper function for displaying the runtime of tasks
def format_runtime(runtime):
retVal = ""
if runtime.days:
retVal = format_unit(runtime.days, 'duration-day', length="long", locale=get_locale()) + ', '
mins, seconds = divmod(runtime.seconds, 60)
hours, minutes = divmod(mins, 60)
# ToDo: locale.number_symbols._data['timeSeparator'] -> localize time separator ?
if hours:
retVal += '{:d}:{:02d}:{:02d}s'.format(hours, minutes, seconds)
elif minutes:
retVal += '{:2d}:{:02d}s'.format(minutes, seconds)
else:
retVal += '{:2d}s'.format(seconds)
return retVal
# helper function to apply localize status information in tasklist entries
def render_task_status(tasklist):
renderedtasklist=list()
for task in tasklist:
if task['user'] == current_user.nickname or current_user.role_admin():
if task['formStarttime']:
task['starttime'] = format_datetime(task['formStarttime'], format='short', locale=get_locale())
# task2['formStarttime'] = ""
else:
if 'starttime' not in task:
task['starttime'] = ""
if 'formRuntime' not in task:
task['runtime'] = ""
else:
task['runtime'] = format_runtime(task['formRuntime'])
# localize the task status
if isinstance( task['stat'], int ):
if task['stat'] == STAT_WAITING:
task['status'] = _(u'Waiting')
elif task['stat'] == STAT_FAIL:
task['status'] = _(u'Failed')
elif task['stat'] == STAT_STARTED:
task['status'] = _(u'Started')
elif task['stat'] == STAT_FINISH_SUCCESS:
task['status'] = _(u'Finished')
else:
task['status'] = _(u'Unknown Status')
# localize the task type
if isinstance( task['taskType'], int ):
if task['taskType'] == TASK_EMAIL:
task['taskMessage'] = _(u'E-mail: ') + task['taskMess']
elif task['taskType'] == TASK_CONVERT:
task['taskMessage'] = _(u'Convert: ') + task['taskMess']
elif task['taskType'] == TASK_UPLOAD:
task['taskMessage'] = _(u'Upload: ') + task['taskMess']
elif task['taskType'] == TASK_CONVERT_ANY:
task['taskMessage'] = _(u'Convert: ') + task['taskMess']
else:
task['taskMessage'] = _(u'Unknown Task: ') + task['taskMess']
renderedtasklist.append(task)
return renderedtasklist
# Language and content filters for displaying in the UI
def common_filters():
if current_user.filter_language() != "all":
lang_filter = db.Books.languages.any(db.Languages.lang_code == current_user.filter_language())
else:
lang_filter = true()
content_rating_filter = false() if current_user.mature_content else \
db.Books.tags.any(db.Tags.name.in_(config.mature_content_tags()))
return and_(lang_filter, ~content_rating_filter)
# Creates for all stored languages a translated speaking name in the array for the UI
def speaking_language(languages=None):
if not languages:
languages = db.session.query(db.Languages).all()
for lang in languages:
try:
cur_l = LC.parse(lang.lang_code)
lang.name = cur_l.get_language_name(get_locale())
except UnknownLocaleError:
lang.name = _(isoLanguages.get(part3=lang.lang_code).name)
return languages
# checks if domain is in database (including wildcards)
# example SELECT * FROM @TABLE WHERE 'abcdefg' LIKE Name;
# from https://code.luasoftware.com/tutorials/flask/execute-raw-sql-in-flask-sqlalchemy/
def check_valid_domain(domain_text):
domain_text = domain_text.split('@', 1)[-1].lower()
sql = "SELECT * FROM registration WHERE :domain LIKE domain;"
result = ub.session.query(ub.Registration).from_statement(text(sql)).params(domain=domain_text).all()
return len(result)
# Orders all Authors in the list according to authors sort
def order_authors(entry):
sort_authors = entry.author_sort.split('&')
authors_ordered = list()
error = False
for auth in sort_authors:
# ToDo: How to handle not found authorname
result = db.session.query(db.Authors).filter(db.Authors.sort == auth.lstrip().strip()).first()
if not result:
error = True
break
authors_ordered.append(result)
if not error:
entry.authors = authors_ordered
return entry
# Fill indexpage with all requested data from database
def fill_indexpage(page, database, db_filter, order, *join):
if current_user.show_detail_random():
randm = db.session.query(db.Books).filter(common_filters())\
.order_by(func.random()).limit(config.config_random_books)
else:
randm = false()
off = int(int(config.config_books_per_page) * (page - 1))
pagination = Pagination(page, config.config_books_per_page,
len(db.session.query(database).filter(db_filter).filter(common_filters()).all()))
entries = db.session.query(database).join(*join, isouter=True).filter(db_filter).filter(common_filters()).\
order_by(*order).offset(off).limit(config.config_books_per_page).all()
for book in entries:
book = order_authors(book)
return entries, randm, pagination
def get_typeahead(database, query, replace=('','')):
db.session.connection().connection.connection.create_function("lower", 1, lcase)
entries = db.session.query(database).filter(func.lower(database.name).ilike("%" + query + "%")).all()
json_dumps = json.dumps([dict(name=r.name.replace(*replace)) for r in entries])
return json_dumps
# read search results from calibre-database and return it (function is used for feed and simple search
def get_search_results(term):
db.session.connection().connection.connection.create_function("lower", 1, lcase)
q = list()
authorterms = re.split("[, ]+", term)
for authorterm in authorterms:
q.append(db.Books.authors.any(func.lower(db.Authors.name).ilike("%" + authorterm + "%")))
db.Books.authors.any(func.lower(db.Authors.name).ilike("%" + term + "%"))
return db.session.query(db.Books).filter(common_filters()).filter(
or_(db.Books.tags.any(func.lower(db.Tags.name).ilike("%" + term + "%")),
db.Books.series.any(func.lower(db.Series.name).ilike("%" + term + "%")),
db.Books.authors.any(and_(*q)),
db.Books.publishers.any(func.lower(db.Publishers.name).ilike("%" + term + "%")),
func.lower(db.Books.title).ilike("%" + term + "%")
)).all()
def get_cc_columns():
tmpcc = db.session.query(db.Custom_Columns).filter(db.Custom_Columns.datatype.notin_(db.cc_exceptions)).all()
if config.config_columns_to_ignore:
cc = []
for col in tmpcc:
r = re.compile(config.config_columns_to_ignore)
if r.match(col.label):
cc.append(col)
else:
cc = tmpcc
return cc
def get_download_link(book_id, book_format):
book_format = book_format.split(".")[0]
book = db.session.query(db.Books).filter(db.Books.id == book_id).first()
data = db.session.query(db.Data).filter(db.Data.book == book.id)\
.filter(db.Data.format == book_format.upper()).first()
if data:
# collect downloaded books only for registered user and not for anonymous user
if current_user.is_authenticated:
ub.update_download(book_id, int(current_user.id))
file_name = book.title
if len(book.authors) > 0:
file_name = book.authors[0].name + '_' + file_name
file_name = get_valid_filename(file_name)
headers = Headers()
headers["Content-Type"] = mimetypes.types_map.get('.' + book_format, "application/octet-stream")
headers["Content-Disposition"] = "attachment; filename*=UTF-8''%s.%s" % (quote(file_name.encode('utf-8')),
book_format)
return do_download_file(book, book_format, data, headers)
else:
abort(404)
############### Database Helper functions
def lcase(s):
return unidecode.unidecode(s.lower())
Reference in New Issue View Git Blame Copy Permalink