annotate frontends/src/jp/cmd_input.py @ 2281:4af1805cc6df

jp (pubsub/delete): delete command implementation (to delete an item)
author Goffi <goffi@goffi.org>
date Wed, 28 Jun 2017 20:28:58 +0200
parents 489efbda377c
children d8e48c850ad2
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rev   line source
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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 # jp: a SàT command line tool
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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
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21 import base
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22 from sat.core.i18n import _
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23 from sat_frontends.jp.constants import Const as C
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24 from sat.tools.common.ansi import ANSI as A
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25 import subprocess
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26 import argparse
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27 import os
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28 import sys
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29
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30 __commands__ = ["Input"]
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31 OPT_STDIN = 'stdin'
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32 OPT_SHORT = 'short'
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33 OPT_LONG = 'long'
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34 OPT_POS = 'positional'
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35 OPT_IGNORE = 'ignore'
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36 OPT_TYPES = (OPT_STDIN, OPT_SHORT, OPT_LONG, OPT_POS, OPT_IGNORE)
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37
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38
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39 class InputCommon(base.CommandBase):
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40
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41 def __init__(self, host, name, help):
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42 base.CommandBase.__init__(self, host, name, use_verbose=True, use_profile=False, help=help)
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43 self.idx = 0
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44 self.reset()
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45
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46 def reset(self):
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47 self.args_idx = 0
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48 self._stdin = []
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49 self._opts = []
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50 self._pos = []
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51
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52 def add_parser_options(self):
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53 self.parser.add_argument("--encoding", default='utf-8', help=_(u"encoding of the input data"))
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54 self.parser.add_argument("-i", "--stdin", action='append_const', const=(OPT_STDIN, None), dest='arguments', help=_(u"standard input"))
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55 self.parser.add_argument("-s", "--short", type=self.opt(OPT_SHORT), action='append', dest='arguments', help=_(u"short option"))
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56 self.parser.add_argument("-l", "--long", type=self.opt(OPT_LONG), action='append', dest='arguments', help=_(u"long option"))
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57 self.parser.add_argument("-p", "--positional", type=self.opt(OPT_POS), action='append', dest='arguments', help=_(u"positional argument"))
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58 self.parser.add_argument("-x", "--ignore", action='append_const', const=(OPT_IGNORE, None), dest='arguments', help=_(u"ignore value"))
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59 self.parser.add_argument("-D", "--debug", action='store_true', help=_(u"don't actually run commands but echo what would be launched"))
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60 self.parser.add_argument("command", nargs=argparse.REMAINDER)
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61
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62 def opt(self, type_):
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63 return lambda s: (type_, s)
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64
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65 def addValue(self, value):
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66 """add a parsed value according to arguments sequence"""
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67 arguments = self.args.arguments
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68 try:
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69 arg_type, arg_name = arguments[self.args_idx]
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70 except IndexError:
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71 self.disp(_(u"arguments in input data and in arguments sequence don't match"), error=True)
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72 self.host.quit(C.EXIT_DATA_ERROR)
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73 self.args_idx += 1
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74 while self.args_idx < len(arguments):
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75 next_arg = arguments[self.args_idx]
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76 if next_arg[0] not in OPT_TYPES:
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77 # we have a filter
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78 filter_type, filter_arg = arguments[self.args_idx]
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79 value = self.filter(filter_type, filter_arg, value)
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80 else:
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81 break
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82 self.args_idx += 1
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83
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84 if not isinstance(value, list):
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85 value = [value]
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86
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87 for v in value:
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88 if arg_type == OPT_STDIN:
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89 self._stdin.append(v.encode('utf-8'))
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90 elif arg_type == OPT_SHORT:
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91 self._opts.append('-{}'.format(arg_name))
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92 self._opts.append(v.encode('utf-8'))
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93 elif arg_type == OPT_LONG:
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94 self._opts.append('--{}'.format(arg_name))
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95 self._opts.append(v.encode('utf-8'))
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96 elif arg_type == OPT_POS:
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97 self._pos.append(v.encode('utf-8'))
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98 elif arg_type == OPT_IGNORE:
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99 pass
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100 else:
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101 self.parser.error(_(u"Invalid argument, an option type is expected, got {type_}:{name}").format(
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102 type_=arg_type, name=arg_name))
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103
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104 def runCommand(self):
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105 """run requested command with parsed arguments"""
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106 if self.args_idx != len(self.args.arguments):
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107 self.disp(_(u"arguments in input data and in arguments sequence don't match"), error=True)
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108 self.host.quit(C.EXIT_DATA_ERROR)
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109 stdin = ''.join(self._stdin)
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110 if self.args.debug:
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111 self.disp(_(u'command {idx}').format(idx=self.idx))
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112 if stdin:
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113 self.disp(u'--- STDIN ---')
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114 self.disp(stdin.decode('utf-8'))
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115 self.disp(u'-------------')
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116 self.disp(u'{indent}{prog} {static} {options} {positionals}'.format(
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117 indent = 4*u' ',
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118 prog=sys.argv[0],
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119 static = ' '.join(self.args.command).encode('utf-8'),
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120 options = u' '.join([o.encode('utf-8') for o in self._opts]),
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121 positionals = u' '.join([p.encode('utf-8') for p in self._pos])
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122 ))
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123 self.disp(u'')
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124 else:
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125 self.disp(_(u'command {idx}').format(idx=self.idx), no_lf=True)
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126 with open(os.devnull, 'wb') as DEVNULL:
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127 p = subprocess.Popen([sys.argv[0]] + self.args.command + self._opts + self._pos,
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128 stdin=subprocess.PIPE, stdout=DEVNULL, stderr=DEVNULL)
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129 p.communicate(stdin)
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130 ret = p.wait()
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131 if ret == 0:
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132 self.disp(A.color(C.A_SUCCESS, _(u'OK')))
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133 else:
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134 self.disp(A.color(C.A_FAILURE, _(u'FAILED')))
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135
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136 self.reset()
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137 self.idx += 1
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138
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139 def filter(self, filter_type, filter_arg, value):
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140 raise NotImplementedError
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141
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142
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143 class Csv(InputCommon):
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144
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145 def __init__(self, host):
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146 super(Csv, self).__init__(host, 'csv', _(u'comma-separated values'))
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147
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148 def add_parser_options(self):
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149 InputCommon.add_parser_options(self)
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150 self.parser.add_argument("-r", "--row", type=int, default=0, help=_(u"starting row (previous ones will be ignored)"))
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151 self.parser.add_argument("-S", "--split", action='append_const', const=('split', None), dest='arguments', help=_(u"split value in several options"))
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152
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153 def filter(self, arg_type, filter_type, filter_arg, value):
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154 if filter_type == 'split':
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155 return value.split()
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156
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157 super(Csv, self).filter(filter_type, filter_arg, value)
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158
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159 def start(self):
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160 import csv
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161 reader = csv.reader(sys.stdin)
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162 for idx, row in enumerate(reader):
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163 if idx < self.args.row:
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164 continue
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165 for value in row:
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166 self.addValue(value.decode(self.args.encoding))
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167 self.runCommand()
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168
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169
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170 class Input(base.CommandBase):
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171 subcommands = (Csv,)
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172
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173 def __init__(self, host):
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174 super(Input, self).__init__(host, 'input', use_profile=False, help=_(u'launch command with external input'))