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annotate src/tools/common/regex.py @ 2309:c7a72b75232b

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jp (shell): shell command (REPL mode), first draft: This command launch jp in REPL mode, allowing do normal jp commands with some facilities. Command can be selected with "cmd" (e.g. "cmd blog"). An argument can be fixed with "use" (e.g. "use output fancy"). Command is launched with "do", or directly with its name if it doesn't conflict with a shell command. Arguments completion is still TODO (only shell commands are completed so far).
author Goffi <goffi@goffi.org>
date Thu, 06 Jul 2017 20:28:25 +0200
parents ad2a8e8b52da
children 8b37a62336c3
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1934
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1 #!/usr/bin/env python2
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2 # -*- coding: utf-8 -*-
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3
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4 # Salut à Toi: an XMPP client
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5 # Copyright (C) 2009-2016 Jérôme Poisson (goffi@goffi.org)
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6
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7 # This program is free software: you can redistribute it and/or modify
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8 # it under the terms of the GNU Affero General Public License as published by
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9 # the Free Software Foundation, either version 3 of the License, or
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10 # (at your option) any later version.
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11
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12 # This program is distributed in the hope that it will be useful,
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13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 # GNU Affero General Public License for more details.
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16
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17 # You should have received a copy of the GNU Affero General Public License
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18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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19
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20 """ regex tools common to backend and frontends """
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21
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22 import re
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23 path_escape = {'%': '%25', '/': '%2F', '\\': '%5c'}
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24 path_escape_rev = {re.escape(v):k for k, v in path_escape.iteritems()}
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25 path_escape = {re.escape(k):v for k, v in path_escape.iteritems()}
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26 # thanks to Martijn Pieters (https://stackoverflow.com/a/14693789)
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27 RE_ANSI_REMOVE = re.compile(r'\x1b[^m]*m')
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29
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30 def reJoin(exps):
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31 """Join (OR) various regexes"""
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32 return re.compile('|'.join(exps))
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35 def reSubDict(pattern, repl_dict, string):
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36 """Replace key, value found in dict according to pattern
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37
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38 @param pattern(basestr): pattern using keys found in repl_dict
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39 @repl_dict(dict): keys found in this dict will be replaced by
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40 corresponding values
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41 @param string(basestr): string to use for the replacement
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42 """
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43 return pattern.sub(lambda m: repl_dict[re.escape(m.group(0))], string)
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44
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45 path_escape_re = reJoin(path_escape.keys())
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46 path_escape_rev_re = reJoin(path_escape_rev.keys())
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49 def pathEscape(string):
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50 """Escape string so it can be use in a file path
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51
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52 @param string(basestr): string to escape
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53 @return (str, unicode): escaped string, usable in a file path
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54 """
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55 return reSubDict(path_escape_re, path_escape, string)
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57
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58 def pathUnescape(string):
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59 """Unescape string from value found in file path
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60
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61 @param string(basestr): string found in file path
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62 @return (str, unicode): unescaped string
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63 """
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64 return reSubDict(path_escape_rev_re, path_escape_rev, string)
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66 def ansiRemove(string):
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67 """Remove ANSI escape codes from string
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69 @param string(basestr): string to filter
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70 @return (str, unicode): string without ANSI escape codes
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71 """
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72 return RE_ANSI_REMOVE.sub('', string)