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annotate src/tools/common/regex.py @ 2532:772447ec070f

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jp: pubsub options refactoring: There is now only "use_pubsub", and specification are set using "pubsub_flags" argument when instantiating CommandBase. Options are more Python Zen compliant by using explicit arguments for item, draft, url instead of trying to guess with magic keyword and type detection. Pubsub node and item are now always using respecively "-n" and "-i" even when required, this way shell history can be used to change command more easily, and it's globally less confusing for user. if --pubsub-url is used, elements can be overwritten with individual option (e.g. change item id with --item). New "use_draft" argument in CommandBase, to re-use current draft or open a file path as draft. Item can now be specified when using a draft. If it already exists, its content will be added to current draft (with a separator), to avoid loosing data. common.BaseEdit.getItemPath could be simplified thanks to those changes. Pubsub URI handling has been moved to base.py.
author Goffi <goffi@goffi.org>
date Wed, 21 Mar 2018 19:13:22 +0100
parents 0046283a285d
children
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2daf7b4c6756 use of /usr/bin/env instead of /usr/bin/python in shebang
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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) 2009-2018 Jérôme Poisson (goffi@goffi.org)
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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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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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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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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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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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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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58 def pathUnescape(string):
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59 """Unescape string from value found in file path
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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)