Mercurial > libervia-backend
view sat/tools/common/regex.py @ 2609:75d2ac872965
jp (base): do not crash when item is specified (e.g. in URL) but not needed in command, but display a message on stderr.
author | Goffi <goffi@goffi.org> |
---|---|
date | Wed, 06 Jun 2018 19:24:15 +0200 |
parents | 26edcf3a30eb |
children | 56f94936df1e |
line wrap: on
line source
#!/usr/bin/env python2 # -*- coding: utf-8 -*- # Salut à Toi: an XMPP client # Copyright (C) 2009-2018 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero 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 Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. """ regex tools common to backend and frontends """ import re path_escape = {'%': '%25', '/': '%2F', '\\': '%5c'} path_escape_rev = {re.escape(v):k for k, v in path_escape.iteritems()} path_escape = {re.escape(k):v for k, v in path_escape.iteritems()} # thanks to Martijn Pieters (https://stackoverflow.com/a/14693789) RE_ANSI_REMOVE = re.compile(r'\x1b[^m]*m') def reJoin(exps): """Join (OR) various regexes""" return re.compile('|'.join(exps)) def reSubDict(pattern, repl_dict, string): """Replace key, value found in dict according to pattern @param pattern(basestr): pattern using keys found in repl_dict @repl_dict(dict): keys found in this dict will be replaced by corresponding values @param string(basestr): string to use for the replacement """ return pattern.sub(lambda m: repl_dict[re.escape(m.group(0))], string) path_escape_re = reJoin(path_escape.keys()) path_escape_rev_re = reJoin(path_escape_rev.keys()) def pathEscape(string): """Escape string so it can be use in a file path @param string(basestr): string to escape @return (str, unicode): escaped string, usable in a file path """ return reSubDict(path_escape_re, path_escape, string) def pathUnescape(string): """Unescape string from value found in file path @param string(basestr): string found in file path @return (str, unicode): unescaped string """ return reSubDict(path_escape_rev_re, path_escape_rev, string) def ansiRemove(string): """Remove ANSI escape codes from string @param string(basestr): string to filter @return (str, unicode): string without ANSI escape codes """ return RE_ANSI_REMOVE.sub('', string)