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# stdnum.wsgi - simple WSGI application to check numbers
#
# Copyright (C) 2017-2020 Arthur de Jong.
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library 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
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
# 02110-1301 USA
"""Simple WSGI application to check numbers."""
import cgi
import inspect
import json
import os
import re
import sys
sys.stdout = sys.stderr
sys.path.insert(0, os.path.join(os.path.dirname(__file__), 'python-stdnum'))
from stdnum.util import (
get_module_description, get_module_name, get_number_modules, to_unicode)
_template = None
def get_conversions(module, number):
"""Return the possible conversions for the number."""
for name, func in inspect.getmembers(module, inspect.isfunction):
if name.startswith('to_'):
args, varargs, varkw, defaults = inspect.getargspec(func)
if defaults:
args = args[:-len(defaults)]
if args == ['number'] and not name.endswith('binary'):
try:
conversion = func(number)
if conversion != number:
yield (name[3:], to_unicode(conversion))
except Exception:
pass
def info(module, number):
"""Return information about the number."""
compactfn = getattr(module, 'compact', lambda x: x)
formatfn = getattr(module, 'format', compactfn)
return dict(
number=formatfn(number),
compact=compactfn(number),
valid=module.is_valid(number),
module=module.__name__.split('.', 1)[1],
name=to_unicode(get_module_name(module)),
description=to_unicode(get_module_description(module)),
conversions=dict(get_conversions(module, number)))
def format(data):
"""Return an HTML snippet describing the number."""
description = cgi.escape(data['description']).replace('\n\n', '<br/>\n')
description = re.sub(
r'^[*] (.*)$', r'<ul><li>\1</li></ul>',
description, flags=re.MULTILINE)
description = re.sub(
r'\b((https?|ftp)://[^\s<]*[-\w+&@#/%=~_|])',
r'<a href="\1">\1</a>',
description, flags=re.IGNORECASE + re.UNICODE)
for name, conversion in data.get('conversions', {}).items():
description += '\n<br/><b><i>%s</i></b>: %s' % (
cgi.escape(name), cgi.escape(conversion))
return '<li>%s: <b>%s</b><p>%s</p></li>' % (
cgi.escape(data['number']),
cgi.escape(data['name']),
description)
def application(environ, start_response):
"""WSGI application."""
# read template if needed
global _template
if not _template:
basedir = os.path.join(
environ['DOCUMENT_ROOT'],
os.path.dirname(environ['SCRIPT_NAME']).strip('/'))
_template = to_unicode(open(os.path.join(basedir, 'template.html'), 'rt').read())
is_ajax = environ.get(
'HTTP_X_REQUESTED_WITH', '').lower() == 'xmlhttprequest'
parameters = cgi.parse_qs(environ.get('QUERY_STRING', ''))
results = []
number = ''
if 'number' in parameters:
number = to_unicode(parameters['number'][0])
results = [
info(module, number)
for module in get_number_modules()
if module.is_valid(number)]
if is_ajax:
start_response('200 OK', [
('Content-Type', 'application/json'),
('Vary', 'X-Requested-With')])
return [json.dumps(results, indent=2, sort_keys=True).encode('utf-8')]
start_response('200 OK', [
('Content-Type', 'text/html; charset=utf-8'),
('Vary', 'X-Requested-With')])
return [(_template % dict(
value=cgi.escape(number, True),
results=u'\n'.join(format(data) for data in results))).encode('utf-8')]
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