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118 lines
4.0 KiB
Python
118 lines
4.0 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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# This file is part of the Calibre-Web (https://github.com/janeczku/calibre-web)
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# Copyright (C) 2018-2019 OzzieIsaacs, cervinko, jkrehm, bodybybuddha, ok11,
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# andy29485, idalin, Kyosfonica, wuqi, Kennyl, lemmsh,
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# falgh1, grunjol, csitko, ytils, xybydy, trasba, vrabe,
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# ruben-herold, marblepebble, JackED42, SiphonSquirrel,
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# apetresc, nanu-c, mutschler
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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# custom jinja filters
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from __future__ import division, print_function, unicode_literals
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import datetime
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import mimetypes
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import re
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from babel.dates import format_date
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from flask import Blueprint, request, url_for
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from flask_babel import get_locale
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from flask_login import current_user
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from . import logger
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jinjia = Blueprint('jinjia', __name__)
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log = logger.create()
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# pagination links in jinja
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@jinjia.app_template_filter('url_for_other_page')
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def url_for_other_page(page):
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args = request.view_args.copy()
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args['page'] = page
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return url_for(request.endpoint, **args)
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# shortentitles to at longest nchar, shorten longer words if necessary
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@jinjia.app_template_filter('shortentitle')
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def shortentitle_filter(s, nchar=20):
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text = s.split()
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res = "" # result
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suml = 0 # overall length
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for line in text:
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if suml >= 60:
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res += '...'
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break
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# if word longer than 20 chars truncate line and append '...', otherwise add whole word to result
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# string, and summarize total length to stop at chars given by nchar
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if len(line) > nchar:
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res += line[:(nchar-3)] + '[..] '
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suml += nchar+3
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else:
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res += line + ' '
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suml += len(line) + 1
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return res.strip()
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@jinjia.app_template_filter('mimetype')
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def mimetype_filter(val):
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return mimetypes.types_map.get('.' + val, 'application/octet-stream')
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@jinjia.app_template_filter('formatdate')
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def formatdate_filter(val):
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try:
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conformed_timestamp = re.sub(r"[:]|([-](?!((\d{2}[:]\d{2})|(\d{4}))$))", '', val)
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formatdate = datetime.datetime.strptime(conformed_timestamp[:15], "%Y%m%d %H%M%S")
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return format_date(formatdate, format='medium', locale=get_locale())
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except AttributeError as e:
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log.error('Babel error: %s, Current user locale: %s, Current User: %s', e, current_user.locale, current_user.nickname)
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return formatdate
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@jinjia.app_template_filter('formatdateinput')
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def format_date_input(val):
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conformed_timestamp = re.sub(r"[:]|([-](?!((\d{2}[:]\d{2})|(\d{4}))$))", '', val)
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date_obj = datetime.datetime.strptime(conformed_timestamp[:15], "%Y%m%d %H%M%S")
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input_date = date_obj.isoformat().split('T', 1)[0] # Hack to support dates <1900
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return '' if input_date == "0101-01-01" else input_date
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@jinjia.app_template_filter('strftime')
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def timestamptodate(date, fmt=None):
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date = datetime.datetime.fromtimestamp(
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int(date)/1000
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)
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native = date.replace(tzinfo=None)
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if fmt:
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time_format = fmt
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else:
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time_format = '%d %m %Y - %H:%S'
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return native.strftime(time_format)
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@jinjia.app_template_filter('yesno')
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def yesno(value, yes, no):
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return yes if value else no
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'''@jinjia.app_template_filter('canread')
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def canread(ext):
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if isinstance(ext, db.Data):
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ext = ext.format
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return ext.lower() in EXTENSIONS_READER'''
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