summaryrefslogtreecommitdiff
path: root/src/config.py
blob: 8bc0d8631f4e9fe0e8b6da7332f25f33a2bdc3ea (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
# Copyright 2010-2011 Florent Le Coz <louiz@louiz.org>
#
# This file is part of Poezio.
#
# Poezio is free software: you can redistribute it and/or modify
# it under the terms of the zlib license. See the COPYING file.

"""
Defines the global config instance, used to get or set (and save) values
from/to the config file
"""

DEFSECTION = "Poezio"

from configparser import RawConfigParser, NoOptionError, NoSectionError
from os import environ, makedirs, path
from shutil import copy2
from optparse import OptionParser

class Config(RawConfigParser):
    """
    load/save the config to a file
    """
    def __init__(self, file_name):
        self.file_name = file_name
        RawConfigParser.__init__(self, None)
        RawConfigParser.read(self, file_name)
        # Check config integrity and fix it if it’s wrong
        for section in ('bindings', 'var'):
            if not self.has_section(section):
                self.add_section(section)

    def get(self, option, default, section=DEFSECTION):
        """
        get a value from the config but return
        a default value if it is not found
        The type of default defines the type
        returned
        """
        try:
            if type(default) == int:
                res = self.getint(option, section)
            elif type(default) == float:
                res = self.getfloat(option, section)
            elif type(default) == bool:
                res = self.getboolean(option, section)
            else:
                res = self.getstr(option, section)
        except( NoOptionError, NoSectionError):
            return default
        return res

    def __get(self, option, section=DEFSECTION):
        """
        facility for RawConfigParser.get
        """
        return RawConfigParser.get(self, section, option)

    def getstr(self, option, section=DEFSECTION):
        """
        get a value and returns it as a string
        """
        return self.__get(option, section)

    def getint(self, option, section=DEFSECTION):
        """
        get a value and returns it as an int
        """
        try:
            return int(self.__get(option, section))
        except ValueError:
            return -1

    def getfloat(self, option, section=DEFSECTION):
        """
        get a value and returns it as a float
        """
        return float(self.__get(option, section))

    def getboolean(self, option, section=DEFSECTION):
        """
        get a value and returns it as a boolean
        """
        return RawConfigParser.getboolean(self, section, option)

    def write_in_file(self, section, option, value):
        """
        Our own way to save write the value in the file
        Just find the right section, and then find the
        right option, and edit it.

        TODO: make it write also new values in the file, not just what did already
        exist
        """
        df = open(self.file_name, 'r')
        lines_before = [line.strip() for line in df.readlines()]
        df.close()
        result_lines = []
        we_are_in_the_right_section = False
        for line in lines_before:
            if line.startswith('['): # check the section
                if line == '[%s]' % section:
                    we_are_in_the_right_section = True
                else:
                    we_are_in_the_right_section = False
            if (line.startswith('%s ' % (option,)) or
                line.startswith('%s=' % (option,))) and we_are_in_the_right_section:
                line = '%s = %s' % (option, value)
            result_lines.append(line)
        df = open(self.file_name, 'w')
        for line in result_lines:
            df.write('%s\n' % line)
        df.close()

    def set_and_save(self, option, value, section=DEFSECTION):
        """
        set the value in the configuration then save it
        to the file
        """
        try:
            RawConfigParser.set(self, section, option, value)
        except NoSectionError:
            # TODO, add this section if it didn't exist
            return
        self.write_in_file(section, option, value)

    def set(self, option, value, section=DEFSECTION):
        """
        Set the value of an option temporarily
        """
        try:
            RawConfigParser.set(self, section, option, value)
        except NoSectionError:
            pass


firstrun = False

# creates the configuration directory if it doesn't exist
# and copy the default config in it
CONFIG_HOME = environ.get("XDG_CONFIG_HOME")
if not CONFIG_HOME:
    CONFIG_HOME = path.join(environ.get('HOME'), '.config')
CONFIG_PATH = path.join(CONFIG_HOME, 'poezio')
try:
    makedirs(CONFIG_PATH)
except OSError:
    pass

if not path.isfile(path.join(CONFIG_PATH, 'poezio.cfg')):
    copy2(path.join(path.dirname(__file__), '../data/default_config.cfg'), path.join(CONFIG_PATH, 'poezio.cfg'))
    firstrun = True

parser = OptionParser()
parser.add_option("-f", "--file", dest="filename", default=path.join(CONFIG_PATH, 'poezio.cfg'),
                  help="The config file you want to use", metavar="CONFIG_FILE")
parser.add_option("-d", "--debug", dest="debug",
                  help="The file where debug will be written", metavar="DEBUG_FILE")
(options, args) = parser.parse_args()
config = Config(options.filename)
if firstrun:
    config.set('firstrun', True)