root / kamaki / cli / argument.py @ c17b8bc0
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1 | b9331a9f | Stavros Sachtouris | # Copyright 2012 GRNET S.A. All rights reserved.
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2 | b9331a9f | Stavros Sachtouris | #
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3 | b9331a9f | Stavros Sachtouris | # Redistribution and use in source and binary forms, with or
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4 | b9331a9f | Stavros Sachtouris | # without modification, are permitted provided that the following
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5 | b9331a9f | Stavros Sachtouris | # conditions are met:
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6 | b9331a9f | Stavros Sachtouris | #
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7 | b9331a9f | Stavros Sachtouris | # 1. Redistributions of source code must retain the above
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8 | b9331a9f | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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9 | b9331a9f | Stavros Sachtouris | # disclaimer.
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10 | b9331a9f | Stavros Sachtouris | #
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11 | b9331a9f | Stavros Sachtouris | # 2. Redistributions in binary form must reproduce the above
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12 | b9331a9f | Stavros Sachtouris | # copyright notice, this list of conditions and the following
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13 | b9331a9f | Stavros Sachtouris | # disclaimer in the documentation and/or other materials
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14 | b9331a9f | Stavros Sachtouris | # provided with the distribution.
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15 | b9331a9f | Stavros Sachtouris | #
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16 | b9331a9f | Stavros Sachtouris | # THIS SOFTWARE IS PROVIDED BY GRNET S.A. ``AS IS'' AND ANY EXPRESS
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17 | b9331a9f | Stavros Sachtouris | # OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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18 | b9331a9f | Stavros Sachtouris | # WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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19 | b9331a9f | Stavros Sachtouris | # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL GRNET S.A OR
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20 | b9331a9f | Stavros Sachtouris | # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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21 | b9331a9f | Stavros Sachtouris | # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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22 | b9331a9f | Stavros Sachtouris | # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
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23 | b9331a9f | Stavros Sachtouris | # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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24 | b9331a9f | Stavros Sachtouris | # AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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25 | b9331a9f | Stavros Sachtouris | # LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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26 | b9331a9f | Stavros Sachtouris | # ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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27 | b9331a9f | Stavros Sachtouris | # POSSIBILITY OF SUCH DAMAGE.
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28 | b9331a9f | Stavros Sachtouris | #
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29 | b9331a9f | Stavros Sachtouris | # The views and conclusions contained in the software and
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30 | b9331a9f | Stavros Sachtouris | # documentation are those of the authors and should not be
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31 | b9331a9f | Stavros Sachtouris | # interpreted as representing official policies, either expressed
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32 | b9331a9f | Stavros Sachtouris | # or implied, of GRNET S.A.
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33 | 9bdc89da | Stavros Sachtouris | |
34 | c270fe96 | Stavros Sachtouris | from kamaki.cli.config import Config |
35 | b696ed2c | Stavros Sachtouris | from kamaki.cli.errors import CLISyntaxError, raiseCLIError |
36 | e0f40c94 | Stavros Sachtouris | from kamaki.cli.utils import split_input |
37 | e0f40c94 | Stavros Sachtouris | |
38 | af6de846 | Stavros Sachtouris | from argparse import ArgumentParser, ArgumentError |
39 | dfee2caf | Stavros Sachtouris | |
40 | fd1f1d96 | Stavros Sachtouris | try:
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41 | 1d329d27 | Stavros Sachtouris | from progress.bar import FillingCirclesBar as KamakiProgressBar |
42 | 1d329d27 | Stavros Sachtouris | # IncrementalBar
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43 | fd1f1d96 | Stavros Sachtouris | except ImportError: |
44 | fd1f1d96 | Stavros Sachtouris | # progress not installed - pls, pip install progress
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45 | fd1f1d96 | Stavros Sachtouris | pass
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46 | fd1f1d96 | Stavros Sachtouris | |
47 | fd5db045 | Stavros Sachtouris | |
48 | dfee2caf | Stavros Sachtouris | class Argument(object): |
49 | edb7fc1a | Stavros Sachtouris | """An argument that can be parsed from command line or otherwise.
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50 | edb7fc1a | Stavros Sachtouris | This is the general Argument class. It is suggested to extent this
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51 | edb7fc1a | Stavros Sachtouris | class into more specific argument types.
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52 | edb7fc1a | Stavros Sachtouris | """
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53 | dfee2caf | Stavros Sachtouris | |
54 | dfee2caf | Stavros Sachtouris | def __init__(self, arity, help=None, parsed_name=None, default=None): |
55 | 606fe15f | Stavros Sachtouris | self.arity = int(arity) |
56 | 606fe15f | Stavros Sachtouris | |
57 | dfee2caf | Stavros Sachtouris | if help is not None: |
58 | dfee2caf | Stavros Sachtouris | self.help = help
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59 | dfee2caf | Stavros Sachtouris | if parsed_name is not None: |
60 | dfee2caf | Stavros Sachtouris | self.parsed_name = parsed_name
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61 | dfee2caf | Stavros Sachtouris | if default is not None: |
62 | dfee2caf | Stavros Sachtouris | self.default = default
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63 | dfee2caf | Stavros Sachtouris | |
64 | fd5db045 | Stavros Sachtouris | @property
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65 | dfee2caf | Stavros Sachtouris | def parsed_name(self): |
66 | edb7fc1a | Stavros Sachtouris | """the string which will be recognised by the parser as an instance
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67 | edb7fc1a | Stavros Sachtouris | of this argument
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68 | edb7fc1a | Stavros Sachtouris | """
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69 | dfee2caf | Stavros Sachtouris | return getattr(self, '_parsed_name', None) |
70 | fd5db045 | Stavros Sachtouris | |
71 | dfee2caf | Stavros Sachtouris | @parsed_name.setter
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72 | dfee2caf | Stavros Sachtouris | def parsed_name(self, newname): |
73 | dfee2caf | Stavros Sachtouris | self._parsed_name = getattr(self, '_parsed_name', []) |
74 | dfee2caf | Stavros Sachtouris | if isinstance(newname, list) or isinstance(newname, tuple): |
75 | dfee2caf | Stavros Sachtouris | self._parsed_name += list(newname) |
76 | dfee2caf | Stavros Sachtouris | else:
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77 | dfee2caf | Stavros Sachtouris | self._parsed_name.append(unicode(newname)) |
78 | dfee2caf | Stavros Sachtouris | |
79 | fd5db045 | Stavros Sachtouris | @property
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80 | dfee2caf | Stavros Sachtouris | def help(self): |
81 | edb7fc1a | Stavros Sachtouris | """a user friendly help message"""
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82 | dfee2caf | Stavros Sachtouris | return getattr(self, '_help', None) |
83 | fd5db045 | Stavros Sachtouris | |
84 | dfee2caf | Stavros Sachtouris | @help.setter
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85 | dfee2caf | Stavros Sachtouris | def help(self, newhelp): |
86 | dfee2caf | Stavros Sachtouris | self._help = unicode(newhelp) |
87 | dfee2caf | Stavros Sachtouris | |
88 | fd5db045 | Stavros Sachtouris | @property
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89 | dfee2caf | Stavros Sachtouris | def arity(self): |
90 | edb7fc1a | Stavros Sachtouris | """negative for repeating, 0 for flag, 1 or more for values"""
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91 | dfee2caf | Stavros Sachtouris | return getattr(self, '_arity', None) |
92 | fd5db045 | Stavros Sachtouris | |
93 | dfee2caf | Stavros Sachtouris | @arity.setter
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94 | dfee2caf | Stavros Sachtouris | def arity(self, newarity): |
95 | dfee2caf | Stavros Sachtouris | newarity = int(newarity)
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96 | dfee2caf | Stavros Sachtouris | self._arity = newarity
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97 | dfee2caf | Stavros Sachtouris | |
98 | fd5db045 | Stavros Sachtouris | @property
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99 | dfee2caf | Stavros Sachtouris | def default(self): |
100 | edb7fc1a | Stavros Sachtouris | """the value of this argument when not set"""
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101 | dfee2caf | Stavros Sachtouris | if not hasattr(self, '_default'): |
102 | dfee2caf | Stavros Sachtouris | self._default = False if self.arity == 0 else None |
103 | dfee2caf | Stavros Sachtouris | return self._default |
104 | fd5db045 | Stavros Sachtouris | |
105 | dfee2caf | Stavros Sachtouris | @default.setter
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106 | dfee2caf | Stavros Sachtouris | def default(self, newdefault): |
107 | dfee2caf | Stavros Sachtouris | self._default = newdefault
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108 | dfee2caf | Stavros Sachtouris | |
109 | fd5db045 | Stavros Sachtouris | @property
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110 | dfee2caf | Stavros Sachtouris | def value(self): |
111 | edb7fc1a | Stavros Sachtouris | """the value of the argument"""
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112 | dfee2caf | Stavros Sachtouris | return getattr(self, '_value', self.default) |
113 | fd5db045 | Stavros Sachtouris | |
114 | dfee2caf | Stavros Sachtouris | @value.setter
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115 | dfee2caf | Stavros Sachtouris | def value(self, newvalue): |
116 | dfee2caf | Stavros Sachtouris | self._value = newvalue
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117 | dfee2caf | Stavros Sachtouris | |
118 | dfee2caf | Stavros Sachtouris | def update_parser(self, parser, name): |
119 | edb7fc1a | Stavros Sachtouris | """Update argument parser with self info"""
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120 | 0a0b9fb6 | Stavros Sachtouris | action = 'append' if self.arity < 0\ |
121 | 0a0b9fb6 | Stavros Sachtouris | else 'store_true' if self.arity == 0\ |
122 | 0a0b9fb6 | Stavros Sachtouris | else 'store' |
123 | dfee2caf | Stavros Sachtouris | parser.add_argument(*self.parsed_name, dest=name, action=action,
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124 | dfee2caf | Stavros Sachtouris | default=self.default, help=self.help) |
125 | dfee2caf | Stavros Sachtouris | |
126 | dfee2caf | Stavros Sachtouris | def main(self): |
127 | edb7fc1a | Stavros Sachtouris | """Overide this method to give functionality to your args"""
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128 | dfee2caf | Stavros Sachtouris | raise NotImplementedError |
129 | dfee2caf | Stavros Sachtouris | |
130 | fd5db045 | Stavros Sachtouris | |
131 | 9bdc89da | Stavros Sachtouris | class ConfigArgument(Argument): |
132 | 439926dd | Stavros Sachtouris | """Manage a kamaki configuration (file)"""
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133 | edb7fc1a | Stavros Sachtouris | |
134 | e9a92550 | Stavros Sachtouris | _config_file = None
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135 | e9a92550 | Stavros Sachtouris | |
136 | fd5db045 | Stavros Sachtouris | @property
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137 | c41a86b2 | Stavros Sachtouris | def value(self): |
138 | 439926dd | Stavros Sachtouris | """A Config object"""
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139 | d486baec | Stavros Sachtouris | super(self.__class__, self).value |
140 | c41a86b2 | Stavros Sachtouris | return super(self.__class__, self).value |
141 | fd5db045 | Stavros Sachtouris | |
142 | c41a86b2 | Stavros Sachtouris | @value.setter
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143 | c41a86b2 | Stavros Sachtouris | def value(self, config_file): |
144 | e9a92550 | Stavros Sachtouris | if config_file:
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145 | e9a92550 | Stavros Sachtouris | self._value = Config(config_file)
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146 | e9a92550 | Stavros Sachtouris | self._config_file = config_file
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147 | e9a92550 | Stavros Sachtouris | elif self._config_file: |
148 | e9a92550 | Stavros Sachtouris | self._value = Config(self._config_file) |
149 | e9a92550 | Stavros Sachtouris | else:
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150 | e9a92550 | Stavros Sachtouris | self._value = Config()
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151 | 9bdc89da | Stavros Sachtouris | |
152 | c41a86b2 | Stavros Sachtouris | def get(self, group, term): |
153 | 439926dd | Stavros Sachtouris | """Get a configuration setting from the Config object"""
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154 | c41a86b2 | Stavros Sachtouris | return self.value.get(group, term) |
155 | c41a86b2 | Stavros Sachtouris | |
156 | c41a86b2 | Stavros Sachtouris | def get_groups(self): |
157 | c41a86b2 | Stavros Sachtouris | return self.value.apis() |
158 | 017d37ce | Stavros Sachtouris | |
159 | 017d37ce | Stavros Sachtouris | _config_arg = ConfigArgument(1, 'Path to configuration file', '--config') |
160 | 017d37ce | Stavros Sachtouris | |
161 | fd5db045 | Stavros Sachtouris | |
162 | 9bdc89da | Stavros Sachtouris | class CmdLineConfigArgument(Argument): |
163 | edb7fc1a | Stavros Sachtouris | """Set a run-time setting option (not persistent)"""
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164 | edb7fc1a | Stavros Sachtouris | |
165 | c41a86b2 | Stavros Sachtouris | def __init__(self, config_arg, help='', parsed_name=None, default=None): |
166 | c41a86b2 | Stavros Sachtouris | super(self.__class__, self).__init__(1, help, parsed_name, default) |
167 | c41a86b2 | Stavros Sachtouris | self._config_arg = config_arg
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168 | c41a86b2 | Stavros Sachtouris | |
169 | fd5db045 | Stavros Sachtouris | @property
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170 | c41a86b2 | Stavros Sachtouris | def value(self): |
171 | 439926dd | Stavros Sachtouris | """A key=val option"""
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172 | c41a86b2 | Stavros Sachtouris | return super(self.__class__, self).value |
173 | fd5db045 | Stavros Sachtouris | |
174 | c41a86b2 | Stavros Sachtouris | @value.setter
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175 | c41a86b2 | Stavros Sachtouris | def value(self, options): |
176 | c41a86b2 | Stavros Sachtouris | if options == self.default: |
177 | c41a86b2 | Stavros Sachtouris | return
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178 | fd5db045 | Stavros Sachtouris | if not isinstance(options, list): |
179 | fd5db045 | Stavros Sachtouris | options = [unicode(options)]
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180 | c41a86b2 | Stavros Sachtouris | for option in options: |
181 | c41a86b2 | Stavros Sachtouris | keypath, sep, val = option.partition('=')
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182 | c41a86b2 | Stavros Sachtouris | if not sep: |
183 | b696ed2c | Stavros Sachtouris | raiseCLIError(CLISyntaxError('Argument Syntax Error '),
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184 | b696ed2c | Stavros Sachtouris | details=['%s is missing a "="',
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185 | b696ed2c | Stavros Sachtouris | ' (usage: -o section.key=val)' % option]
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186 | b696ed2c | Stavros Sachtouris | ) |
187 | c41a86b2 | Stavros Sachtouris | section, sep, key = keypath.partition('.')
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188 | 0a0b9fb6 | Stavros Sachtouris | if not sep: |
189 | 0a0b9fb6 | Stavros Sachtouris | key = section |
190 | 0a0b9fb6 | Stavros Sachtouris | section = 'global'
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191 | 0a0b9fb6 | Stavros Sachtouris | self._config_arg.value.override(
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192 | 0a0b9fb6 | Stavros Sachtouris | section.strip(), |
193 | fd5db045 | Stavros Sachtouris | key.strip(), |
194 | fd5db045 | Stavros Sachtouris | val.strip()) |
195 | fd5db045 | Stavros Sachtouris | |
196 | c41a86b2 | Stavros Sachtouris | |
197 | c41a86b2 | Stavros Sachtouris | class FlagArgument(Argument): |
198 | edb7fc1a | Stavros Sachtouris | """
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199 | 439926dd | Stavros Sachtouris | :value: true if set, false otherwise
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200 | edb7fc1a | Stavros Sachtouris | """
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201 | edb7fc1a | Stavros Sachtouris | |
202 | 40a9c357 | Stavros Sachtouris | def __init__(self, help='', parsed_name=None, default=False): |
203 | c41a86b2 | Stavros Sachtouris | super(FlagArgument, self).__init__(0, help, parsed_name, default) |
204 | c41a86b2 | Stavros Sachtouris | |
205 | fd5db045 | Stavros Sachtouris | |
206 | c41a86b2 | Stavros Sachtouris | class ValueArgument(Argument): |
207 | edb7fc1a | Stavros Sachtouris | """
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208 | edb7fc1a | Stavros Sachtouris | :value type: string
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209 | edb7fc1a | Stavros Sachtouris | :value returns: given value or default
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210 | edb7fc1a | Stavros Sachtouris | """
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211 | edb7fc1a | Stavros Sachtouris | |
212 | c41a86b2 | Stavros Sachtouris | def __init__(self, help='', parsed_name=None, default=None): |
213 | c41a86b2 | Stavros Sachtouris | super(ValueArgument, self).__init__(1, help, parsed_name, default) |
214 | c41a86b2 | Stavros Sachtouris | |
215 | fd5db045 | Stavros Sachtouris | |
216 | e3d4d442 | Stavros Sachtouris | class IntArgument(ValueArgument): |
217 | edb7fc1a | Stavros Sachtouris | |
218 | fd5db045 | Stavros Sachtouris | @property
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219 | e3d4d442 | Stavros Sachtouris | def value(self): |
220 | 439926dd | Stavros Sachtouris | """integer (type checking)"""
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221 | e3d4d442 | Stavros Sachtouris | return getattr(self, '_value', self.default) |
222 | fd5db045 | Stavros Sachtouris | |
223 | e3d4d442 | Stavros Sachtouris | @value.setter
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224 | e3d4d442 | Stavros Sachtouris | def value(self, newvalue): |
225 | e3d4d442 | Stavros Sachtouris | if newvalue == self.default: |
226 | e3d4d442 | Stavros Sachtouris | self._value = self.default |
227 | e3d4d442 | Stavros Sachtouris | return
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228 | e3d4d442 | Stavros Sachtouris | try:
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229 | e3d4d442 | Stavros Sachtouris | self._value = int(newvalue) |
230 | e3d4d442 | Stavros Sachtouris | except ValueError: |
231 | b696ed2c | Stavros Sachtouris | raiseCLIError(CLISyntaxError('IntArgument Error'),
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232 | fd5db045 | Stavros Sachtouris | details='Value %s not an int' % newvalue)
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233 | fd5db045 | Stavros Sachtouris | |
234 | e3d4d442 | Stavros Sachtouris | |
235 | c41a86b2 | Stavros Sachtouris | class VersionArgument(FlagArgument): |
236 | edb7fc1a | Stavros Sachtouris | """A flag argument with that prints current version"""
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237 | edb7fc1a | Stavros Sachtouris | |
238 | fd5db045 | Stavros Sachtouris | @property
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239 | c41a86b2 | Stavros Sachtouris | def value(self): |
240 | 439926dd | Stavros Sachtouris | """bool"""
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241 | c41a86b2 | Stavros Sachtouris | return super(self.__class__, self).value |
242 | fd5db045 | Stavros Sachtouris | |
243 | c41a86b2 | Stavros Sachtouris | @value.setter
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244 | c41a86b2 | Stavros Sachtouris | def value(self, newvalue): |
245 | c41a86b2 | Stavros Sachtouris | self._value = newvalue
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246 | c41a86b2 | Stavros Sachtouris | self.main()
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247 | c41a86b2 | Stavros Sachtouris | |
248 | c41a86b2 | Stavros Sachtouris | def main(self): |
249 | 439926dd | Stavros Sachtouris | """Print current version"""
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250 | c41a86b2 | Stavros Sachtouris | if self.value: |
251 | c41a86b2 | Stavros Sachtouris | import kamaki |
252 | fd5db045 | Stavros Sachtouris | print('kamaki %s' % kamaki.__version__)
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253 | fd5db045 | Stavros Sachtouris | |
254 | 9bdc89da | Stavros Sachtouris | |
255 | 0a0b9fb6 | Stavros Sachtouris | class KeyValueArgument(Argument): |
256 | edb7fc1a | Stavros Sachtouris | """A Value Argument that can be repeated
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257 | edb7fc1a | Stavros Sachtouris |
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258 | 439926dd | Stavros Sachtouris | :syntax: --<arg> key1=value1 --<arg> key2=value2 ...
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259 | edb7fc1a | Stavros Sachtouris | """
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260 | edb7fc1a | Stavros Sachtouris | |
261 | 0a0b9fb6 | Stavros Sachtouris | def __init__(self, help='', parsed_name=None, default=[]): |
262 | 0a0b9fb6 | Stavros Sachtouris | super(KeyValueArgument, self).__init__(-1, help, parsed_name, default) |
263 | f3e94e06 | Stavros Sachtouris | |
264 | fd5db045 | Stavros Sachtouris | @property
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265 | f3e94e06 | Stavros Sachtouris | def value(self): |
266 | 439926dd | Stavros Sachtouris | """
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267 | 439926dd | Stavros Sachtouris | :input: key=value
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268 | 439926dd | Stavros Sachtouris | :output: {'key1':'value1', 'key2':'value2', ...}
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269 | 439926dd | Stavros Sachtouris | """
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270 | f3e94e06 | Stavros Sachtouris | return super(KeyValueArgument, self).value |
271 | fd5db045 | Stavros Sachtouris | |
272 | fd5db045 | Stavros Sachtouris | @value.setter
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273 | f3e94e06 | Stavros Sachtouris | def value(self, keyvalue_pairs): |
274 | 0a0b9fb6 | Stavros Sachtouris | self._value = {}
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275 | f3e94e06 | Stavros Sachtouris | for pair in keyvalue_pairs: |
276 | fd5db045 | Stavros Sachtouris | key, sep, val = pair.partition('=')
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277 | f3e94e06 | Stavros Sachtouris | if not sep: |
278 | b696ed2c | Stavros Sachtouris | raiseCLIError(CLISyntaxError('Argument syntax error '),
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279 | 0a0b9fb6 | Stavros Sachtouris | details='%s is missing a "=" (usage: key1=val1 )\n' % pair)
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280 | 23803b28 | Stavros Sachtouris | self._value[key.strip()] = val.strip()
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281 | f3e94e06 | Stavros Sachtouris | |
282 | fd1f1d96 | Stavros Sachtouris | |
283 | fd1f1d96 | Stavros Sachtouris | class ProgressBarArgument(FlagArgument): |
284 | 439926dd | Stavros Sachtouris | """Manage a progress bar"""
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285 | fd1f1d96 | Stavros Sachtouris | |
286 | fd1f1d96 | Stavros Sachtouris | def __init__(self, help='', parsed_name='', default=True): |
287 | fd1f1d96 | Stavros Sachtouris | self.suffix = '%(percent)d%%' |
288 | fd1f1d96 | Stavros Sachtouris | super(ProgressBarArgument, self).__init__(help, parsed_name, default) |
289 | fd1f1d96 | Stavros Sachtouris | try:
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290 | 1d329d27 | Stavros Sachtouris | KamakiProgressBar |
291 | fd1f1d96 | Stavros Sachtouris | except NameError: |
292 | 439926dd | Stavros Sachtouris | print('Warning: no progress bar functionality')
|
293 | fd1f1d96 | Stavros Sachtouris | |
294 | 852a22e7 | Stavros Sachtouris | def clone(self): |
295 | 439926dd | Stavros Sachtouris | """Get a modifiable copy of this bar"""
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296 | 852a22e7 | Stavros Sachtouris | newarg = ProgressBarArgument( |
297 | 852a22e7 | Stavros Sachtouris | self.help,
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298 | 852a22e7 | Stavros Sachtouris | self.parsed_name,
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299 | 852a22e7 | Stavros Sachtouris | self.default)
|
300 | 852a22e7 | Stavros Sachtouris | newarg._value = self._value
|
301 | 852a22e7 | Stavros Sachtouris | return newarg
|
302 | 852a22e7 | Stavros Sachtouris | |
303 | fd1f1d96 | Stavros Sachtouris | def get_generator(self, message, message_len=25): |
304 | 439926dd | Stavros Sachtouris | """Get a generator to handle progress of the bar (gen.next())"""
|
305 | fd1f1d96 | Stavros Sachtouris | if self.value: |
306 | fd1f1d96 | Stavros Sachtouris | return None |
307 | fd1f1d96 | Stavros Sachtouris | try:
|
308 | 1d329d27 | Stavros Sachtouris | self.bar = KamakiProgressBar()
|
309 | fd1f1d96 | Stavros Sachtouris | except NameError: |
310 | 329753ae | Stavros Sachtouris | self.value = None |
311 | 329753ae | Stavros Sachtouris | return self.value |
312 | 329753ae | Stavros Sachtouris | self.bar.message = message.ljust(message_len)
|
313 | 852a22e7 | Stavros Sachtouris | self.bar.suffix = '%(percent)d%% - %(eta)ds' |
314 | a10f5561 | Stavros Sachtouris | self.bar.start()
|
315 | fd1f1d96 | Stavros Sachtouris | |
316 | 852a22e7 | Stavros Sachtouris | def progress_gen(n): |
317 | 852a22e7 | Stavros Sachtouris | for i in self.bar.iter(range(int(n))): |
318 | 852a22e7 | Stavros Sachtouris | yield
|
319 | 852a22e7 | Stavros Sachtouris | yield
|
320 | 852a22e7 | Stavros Sachtouris | return progress_gen
|
321 | fd1f1d96 | Stavros Sachtouris | |
322 | 852a22e7 | Stavros Sachtouris | def finish(self): |
323 | 439926dd | Stavros Sachtouris | """Stop progress bar, return terminal cursor to user"""
|
324 | 852a22e7 | Stavros Sachtouris | if self.value: |
325 | 852a22e7 | Stavros Sachtouris | return
|
326 | 852a22e7 | Stavros Sachtouris | mybar = getattr(self, 'bar', None) |
327 | 852a22e7 | Stavros Sachtouris | if mybar:
|
328 | 852a22e7 | Stavros Sachtouris | mybar.finish() |
329 | fd1f1d96 | Stavros Sachtouris | |
330 | fd1f1d96 | Stavros Sachtouris | |
331 | fd5db045 | Stavros Sachtouris | _arguments = dict(config=_config_arg,
|
332 | fd5db045 | Stavros Sachtouris | help=Argument(0, 'Show help message', ('-h', '--help')), |
333 | fd5db045 | Stavros Sachtouris | debug=FlagArgument('Include debug output', ('-d', '--debug')), |
334 | fd5db045 | Stavros Sachtouris | include=FlagArgument('Include protocol headers in the output',
|
335 | fd5db045 | Stavros Sachtouris | ('-i', '--include')), |
336 | fd5db045 | Stavros Sachtouris | silent=FlagArgument('Do not output anything', ('-s', '--silent')), |
337 | fd5db045 | Stavros Sachtouris | verbose=FlagArgument('More info at response', ('-v', '--verbose')), |
338 | fd5db045 | Stavros Sachtouris | version=VersionArgument('Print current version', ('-V', '--version')), |
339 | fd5db045 | Stavros Sachtouris | options=CmdLineConfigArgument(_config_arg, |
340 | fd5db045 | Stavros Sachtouris | 'Override a config value',
|
341 | fd5db045 | Stavros Sachtouris | ('-o', '--options')) |
342 | 9bdc89da | Stavros Sachtouris | ) |
343 | 439926dd | Stavros Sachtouris | """Initial command line interface arguments"""
|
344 | 439926dd | Stavros Sachtouris | |
345 | 439926dd | Stavros Sachtouris | |
346 | 439926dd | Stavros Sachtouris | """
|
347 | 439926dd | Stavros Sachtouris | Mechanism:
|
348 | 439926dd | Stavros Sachtouris | init_parser
|
349 | 439926dd | Stavros Sachtouris | parse_known_args
|
350 | 439926dd | Stavros Sachtouris | manage top-level user arguments input
|
351 | 439926dd | Stavros Sachtouris | find user-requested command
|
352 | 439926dd | Stavros Sachtouris | add command-specific arguments to dict
|
353 | 439926dd | Stavros Sachtouris | update_arguments
|
354 | 439926dd | Stavros Sachtouris | """
|
355 | 439926dd | Stavros Sachtouris | |
356 | 439926dd | Stavros Sachtouris | |
357 | 7c2247a0 | Stavros Sachtouris | class ArgumentParseManager(object): |
358 | e0da0f90 | Stavros Sachtouris | """Manage (initialize and update) an ArgumentParser object"""
|
359 | e0da0f90 | Stavros Sachtouris | |
360 | 5ad77121 | Stavros Sachtouris | parser = None
|
361 | 7c2247a0 | Stavros Sachtouris | _arguments = {} |
362 | b3dd8f4b | Stavros Sachtouris | _parser_modified = False
|
363 | b3dd8f4b | Stavros Sachtouris | _parsed = None
|
364 | b3dd8f4b | Stavros Sachtouris | _unparsed = None
|
365 | e0da0f90 | Stavros Sachtouris | |
366 | e0da0f90 | Stavros Sachtouris | def __init__(self, exe, arguments=None): |
367 | e0da0f90 | Stavros Sachtouris | """
|
368 | e0da0f90 | Stavros Sachtouris | :param exe: (str) the basic command (e.g. 'kamaki')
|
369 | e0da0f90 | Stavros Sachtouris |
|
370 | e0da0f90 | Stavros Sachtouris | :param arguments: (dict) if given, overrides the global _argument as
|
371 | e0da0f90 | Stavros Sachtouris | the parsers arguments specification
|
372 | e0da0f90 | Stavros Sachtouris | """
|
373 | 5ad77121 | Stavros Sachtouris | self.parser = ArgumentParser(add_help=False) |
374 | b3dd8f4b | Stavros Sachtouris | self.syntax = '%s <cmd_group> [<cmd_subbroup> ...] <cmd>' % exe |
375 | e0da0f90 | Stavros Sachtouris | if arguments:
|
376 | e0da0f90 | Stavros Sachtouris | self.arguments = arguments
|
377 | e0da0f90 | Stavros Sachtouris | else:
|
378 | e0da0f90 | Stavros Sachtouris | global _arguments
|
379 | e0da0f90 | Stavros Sachtouris | self.arguments = _arguments
|
380 | 7c2247a0 | Stavros Sachtouris | self.parse()
|
381 | e0da0f90 | Stavros Sachtouris | |
382 | e0da0f90 | Stavros Sachtouris | @property
|
383 | e0da0f90 | Stavros Sachtouris | def syntax(self): |
384 | b3dd8f4b | Stavros Sachtouris | """The command syntax (useful for help messages, descriptions, etc)"""
|
385 | e0da0f90 | Stavros Sachtouris | return self.parser.prog |
386 | e0da0f90 | Stavros Sachtouris | |
387 | e0da0f90 | Stavros Sachtouris | @syntax.setter
|
388 | e0da0f90 | Stavros Sachtouris | def syntax(self, new_syntax): |
389 | e0da0f90 | Stavros Sachtouris | self.parser.prog = new_syntax
|
390 | e0da0f90 | Stavros Sachtouris | |
391 | b3dd8f4b | Stavros Sachtouris | @property
|
392 | b3dd8f4b | Stavros Sachtouris | def arguments(self): |
393 | b3dd8f4b | Stavros Sachtouris | """(dict) arguments the parser should be aware of"""
|
394 | b3dd8f4b | Stavros Sachtouris | return self._arguments |
395 | b3dd8f4b | Stavros Sachtouris | |
396 | b3dd8f4b | Stavros Sachtouris | @arguments.setter
|
397 | b3dd8f4b | Stavros Sachtouris | def arguments(self, new_arguments): |
398 | b3dd8f4b | Stavros Sachtouris | if new_arguments:
|
399 | b3dd8f4b | Stavros Sachtouris | assert isinstance(new_arguments, dict) |
400 | b3dd8f4b | Stavros Sachtouris | self._arguments = new_arguments
|
401 | b3dd8f4b | Stavros Sachtouris | self.update_parser()
|
402 | b3dd8f4b | Stavros Sachtouris | |
403 | 7c2247a0 | Stavros Sachtouris | @property
|
404 | b3dd8f4b | Stavros Sachtouris | def parsed(self): |
405 | 7c2247a0 | Stavros Sachtouris | """(Namespace) parser-matched terms"""
|
406 | b3dd8f4b | Stavros Sachtouris | if self._parser_modified: |
407 | b3dd8f4b | Stavros Sachtouris | self.parse()
|
408 | b3dd8f4b | Stavros Sachtouris | return self._parsed |
409 | b3dd8f4b | Stavros Sachtouris | |
410 | b3dd8f4b | Stavros Sachtouris | @property
|
411 | b3dd8f4b | Stavros Sachtouris | def unparsed(self): |
412 | b3dd8f4b | Stavros Sachtouris | """(list) parser-unmatched terms"""
|
413 | b3dd8f4b | Stavros Sachtouris | if self._parser_modified: |
414 | b3dd8f4b | Stavros Sachtouris | self.parse()
|
415 | b3dd8f4b | Stavros Sachtouris | return self._unparsed |
416 | b3dd8f4b | Stavros Sachtouris | |
417 | e0da0f90 | Stavros Sachtouris | def update_parser(self, arguments=None): |
418 | e0da0f90 | Stavros Sachtouris | """Load argument specifications to parser
|
419 | e0da0f90 | Stavros Sachtouris |
|
420 | e0da0f90 | Stavros Sachtouris | :param arguments: if not given, update self.arguments instead
|
421 | e0da0f90 | Stavros Sachtouris | """
|
422 | e0da0f90 | Stavros Sachtouris | if not arguments: |
423 | b3dd8f4b | Stavros Sachtouris | arguments = self._arguments
|
424 | e0da0f90 | Stavros Sachtouris | |
425 | e0da0f90 | Stavros Sachtouris | for name, arg in arguments.items(): |
426 | e0da0f90 | Stavros Sachtouris | try:
|
427 | e0da0f90 | Stavros Sachtouris | arg.update_parser(self.parser, name)
|
428 | b3dd8f4b | Stavros Sachtouris | self._parser_modified = True |
429 | e0da0f90 | Stavros Sachtouris | except ArgumentError:
|
430 | e0da0f90 | Stavros Sachtouris | pass
|
431 | e0da0f90 | Stavros Sachtouris | |
432 | 7c2247a0 | Stavros Sachtouris | def update_arguments(self, new_arguments): |
433 | 7c2247a0 | Stavros Sachtouris | """Add to / update existing arguments
|
434 | 7c2247a0 | Stavros Sachtouris |
|
435 | 7c2247a0 | Stavros Sachtouris | :param new_arguments: (dict)
|
436 | 7c2247a0 | Stavros Sachtouris | """
|
437 | 7c2247a0 | Stavros Sachtouris | if new_arguments:
|
438 | 7c2247a0 | Stavros Sachtouris | assert isinstance(new_arguments, dict) |
439 | 7c2247a0 | Stavros Sachtouris | self._arguments.update(new_arguments)
|
440 | 7c2247a0 | Stavros Sachtouris | self.update_parser()
|
441 | 7c2247a0 | Stavros Sachtouris | |
442 | 120126f1 | Stavros Sachtouris | def parse(self, new_args=None): |
443 | 7c2247a0 | Stavros Sachtouris | """Do parse user input"""
|
444 | 120126f1 | Stavros Sachtouris | if new_args:
|
445 | 120126f1 | Stavros Sachtouris | self._parsed, unparsed = self.parser.parse_known_args(new_args) |
446 | 120126f1 | Stavros Sachtouris | else:
|
447 | 120126f1 | Stavros Sachtouris | self._parsed, unparsed = self.parser.parse_known_args() |
448 | b3dd8f4b | Stavros Sachtouris | for name, arg in self.arguments.items(): |
449 | b3dd8f4b | Stavros Sachtouris | arg.value = getattr(self._parsed, name, arg.default) |
450 | b3dd8f4b | Stavros Sachtouris | self._unparsed = []
|
451 | b3dd8f4b | Stavros Sachtouris | for term in unparsed: |
452 | b3dd8f4b | Stavros Sachtouris | self._unparsed += split_input(' \'%s\' ' % term) |
453 | b3dd8f4b | Stavros Sachtouris | self._parser_modified = False |
454 | b3dd8f4b | Stavros Sachtouris | |
455 | e0da0f90 | Stavros Sachtouris | |
456 | af6de846 | Stavros Sachtouris | def update_arguments(parser, arguments): |
457 | 439926dd | Stavros Sachtouris | """Update arguments dict from user input
|
458 | 439926dd | Stavros Sachtouris |
|
459 | 439926dd | Stavros Sachtouris | """
|
460 | af6de846 | Stavros Sachtouris | for name, argument in arguments.items(): |
461 | af6de846 | Stavros Sachtouris | try:
|
462 | af6de846 | Stavros Sachtouris | argument.update_parser(parser, name) |
463 | af6de846 | Stavros Sachtouris | except ArgumentError:
|
464 | af6de846 | Stavros Sachtouris | pass |