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annotate sat/tools/config.py @ 3031:98d1f34ce5b9

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tools (config), memory: renamed SafeConfigParser following Python 3 port
author Goffi <goffi@goffi.org>
date Fri, 16 Aug 2019 17:06:43 +0200
parents ab2696e34d29
children 8b36e5c3f28f
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1 #!/usr/bin/env python3
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2 # -*- coding: utf-8 -*-
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3
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4 # SAT: a jabber client
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5 # Copyright (C) 2009-2019 Jérôme Poisson (goffi@goffi.org)
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6 # Copyright (C) 2013-2016 Adrien Cossa (souliane@mailoo.org)
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7
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8 # This program is free software: you can redistribute it and/or modify
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9 # it under the terms of the GNU Affero General Public License as published by
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10 # the Free Software Foundation, either version 3 of the License, or
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11 # (at your option) any later version.
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12
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13 # This program is distributed in the hope that it will be useful,
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14 # but WITHOUT ANY WARRANTY; without even the implied warranty of
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15 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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16 # GNU Affero General Public License for more details.
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17
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18 # You should have received a copy of the GNU Affero General Public License
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19 # along with this program. If not, see <http://www.gnu.org/licenses/>.
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20
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21 """ Configuration related useful methods """
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22
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23 import os
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24 import csv
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25 import json
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26 from configparser import ConfigParser, DEFAULTSECT, NoOptionError, NoSectionError
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27 from xdg import BaseDirectory
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28 from sat.core.log import getLogger
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29 from sat.core.constants import Const as C
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30 from sat.core.i18n import _
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31 from sat.core import exceptions
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32
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33 log = getLogger(__name__)
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34
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35
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36 def fixConfigOption(section, option, value, silent=True):
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37 """Force a configuration option value, writing it in the first found user
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38 config file, eventually creating a new user config file if none is found.
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39
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40 @param section (str): the config section
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41 @param option (str): the config option
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42 @param value (str): the new value
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43 @param silent (boolean): toggle logging output (must be True when called from sat.sh)
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44 """
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45 config = ConfigParser()
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46 target_file = None
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47 for file_ in C.CONFIG_FILES[::-1]:
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48 # we will eventually update the existing file with the highest priority,
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49 # if it's a user personal file...
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50 if not silent:
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51 log.debug(_("Testing file %s") % file_)
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52 if os.path.isfile(file_):
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53 if file_.startswith(os.path.expanduser("~")):
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54 config.read([file_])
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55 target_file = file_
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56 break
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57 if not target_file:
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58 # ... otherwise we create a new config file for that user
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59 target_file = BaseDirectory.save_config_path("sat") + "/sat.conf"
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60 if section and section.upper() != DEFAULTSECT and not config.has_section(section):
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61 config.add_section(section)
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62 config.set(section, option, value)
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63 with open(target_file, "wb") as configfile:
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64 config.write(configfile) # for the next time that user launches sat
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65 if not silent:
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66 if option in ("passphrase",): # list here the options storing a password
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67 value = "******"
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68 log.warning(_("Config auto-update: {option} set to {value} in the file "
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69 "{config_file}.").format(option=option, value=value,
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70 config_file=target_file))
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71
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72
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73 def parseMainConf():
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74 """look for main .ini configuration file, and parse it"""
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75 config = ConfigParser(defaults=C.DEFAULT_CONFIG)
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76 try:
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77 config.read(C.CONFIG_FILES)
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78 except Exception as e:
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79 log.error(_("Can't read main config: {msg}").format(msg=e), exc_info=True)
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80 return config
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81
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82
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83 def getConfig(config, section, name, default=None):
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84 """Get a configuration option
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85
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86 @param config (ConfigParser): the configuration instance
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87 @param section (str): section of the config file (None or '' for DEFAULT)
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88 @param name (str): name of the option
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89 @param default: value to use if not found, or Exception to raise an exception
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90 @return (unicode, list, dict): parsed value
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91 @raise: NoOptionError if option is not present and default is Exception
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92 NoSectionError if section doesn't exists and default is Exception
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93 exceptions.ParsingError error while parsing value
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94 """
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95 if not section:
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96 section = DEFAULTSECT
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97
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98 try:
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99 value = config.get(section, name)
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100 except (NoOptionError, NoSectionError) as e:
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101 if default is Exception:
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102 raise e
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103 return default
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104
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105 if name.endswith("_path") or name.endswith("_dir"):
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106 value = os.path.expanduser(value)
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107 # thx to Brian (http://stackoverflow.com/questions/186857/splitting-a-semicolon-separated-string-to-a-dictionary-in-python/186873#186873)
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108 elif name.endswith("_list"):
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109 value = next(csv.reader(
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110 [value], delimiter=",", quotechar='"', skipinitialspace=True
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111 ))
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112 elif name.endswith("_dict"):
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113 try:
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114 value = json.loads(value)
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115 except ValueError as e:
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116 raise exceptions.ParsingError("Error while parsing data: {}".format(e))
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117 if not isinstance(value, dict):
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118 raise exceptions.ParsingError(
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119 "{name} value is not a dict: {value}".format(name=name, value=value)
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120 )
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121 elif name.endswith("_json"):
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122 try:
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123 value = json.loads(value)
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124 except ValueError as e:
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125 raise exceptions.ParsingError("Error while parsing data: {}".format(e))
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126 return value