479 lines
18 KiB
Python
479 lines
18 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright(C) 2010 Christophe Benz
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, version 3 of the License.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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from __future__ import with_statement
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import atexit
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import cmd
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from cStringIO import StringIO
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from functools import partial
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import getpass
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from inspect import getargspec
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import logging
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from optparse import OptionGroup, OptionParser
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import os
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import re
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import subprocess
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import sys
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from weboob.capabilities.base import FieldNotFound
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from weboob.core import CallErrors
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from weboob.core.backendscfg import BackendsConfig
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from weboob.tools.misc import iter_fields
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from .base import BackendNotFound, BaseApplication
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from .formatters.load import formatters, load_formatter
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from .results import ResultsCondition, ResultsConditionException
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__all__ = ['ReplApplication']
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class ReplApplication(cmd.Cmd, BaseApplication):
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"""
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Base application class for CLI applications.
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"""
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SYNOPSIS = 'Usage: %prog [-dqv] [-b backends] [-cnfs] [command [arguments..]]\n'
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SYNOPSIS += ' %prog [--help] [--version]'
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def __init__(self):
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cmd.Cmd.__init__(self)
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self.prompt = '%s> ' % self.APPNAME
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self.intro = '\n'.join(('Welcome to %s v%s' % (self.APPNAME, self.VERSION),
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'',
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'%s' % self.COPYRIGHT,
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'This program is free software; you can redistribute it and/or modify',
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'it under the terms of the GNU General Public License as published by',
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'the Free Software Foundation, version 3 of the License.',
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'',
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'Type "help" to display available commands.',
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'',
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))
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self.weboob_commands = set(['backends', 'count', 'quit', 'select'])
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self.hidden_commands = set(['EOF'])
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option_parser = OptionParser(self.SYNOPSIS, version=self._get_optparse_version())
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app_options = OptionGroup(option_parser, '%s Options' % self.APPNAME.capitalize())
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self.add_application_options(app_options)
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option_parser.add_option_group(app_options)
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try:
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BaseApplication.__init__(self, option_parser=option_parser)
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except BackendsConfig.WrongPermissions, e:
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logging.error(u'Error: %s' % e)
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sys.exit(1)
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self._parser.format_description = lambda x: self._parser.description
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if self._parser.description is None:
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self._parser.description = ''
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help_str = self.do_help(return_only=True)
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self._parser.description += help_str
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results_options = OptionGroup(self._parser, 'Results Options')
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results_options.add_option('-c', '--condition', help='filter result items to display given a boolean condition')
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results_options.add_option('-n', '--count', default='10', type='int',
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help='get a maximum number of results (all backends merged)')
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results_options.add_option('-s', '--select', help='select result item keys to display (comma separated)')
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self._parser.add_option_group(results_options)
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formatting_options = OptionGroup(self._parser, 'Formatting Options')
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formatting_options.add_option('-f', '--formatter', choices=formatters,
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help='select output formatter (%s)' % u','.join(formatters))
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formatting_options.add_option('--no-header', dest='no_header', action='store_true', help='do not display header')
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formatting_options.add_option('--no-keys', dest='no_keys', action='store_true', help='do not display item keys')
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self._parser.add_option_group(formatting_options)
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try:
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import readline
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except ImportError:
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pass
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finally:
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history_filepath = os.path.join(self.weboob.WORKDIR, '%s_history' % self.APPNAME)
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try:
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readline.read_history_file(history_filepath)
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except IOError:
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pass
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def savehist():
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readline.write_history_file(history_filepath)
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atexit.register(savehist)
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def set_requested_backends(self, requested_backends):
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self.load_default_backends()
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if requested_backends:
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self.enabled_backends = set(backend for backend in self.weboob.iter_backends()
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if backend.name in requested_backends)
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else:
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self.enabled_backends = list(self.weboob.iter_backends())
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def load_default_backends(self):
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"""
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By default loads all backends.
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Applications can overload this method to restrict backends loaded.
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"""
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self.load_backends()
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@classmethod
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def run(klass, args=None):
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try:
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super(ReplApplication, klass).run(args)
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except BackendNotFound, e:
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logging.error(e)
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def main(self, argv):
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cmd_args = argv[1:]
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if cmd_args:
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if cmd_args[0] == 'help':
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self._parser.print_help()
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self._parser.exit()
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cmd_line = ' '.join(cmd_args)
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cmds = cmd_line.split(';')
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for cmd in cmds:
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self.onecmd(cmd)
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else:
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self.cmdloop()
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def do(self, function, *args, **kwargs):
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"""
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Call Weboob.do(), passing count and selected fields given by user.
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"""
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if kwargs.pop('backends', None) is None:
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kwargs['backends'] = self.enabled_backends
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fields = self.selected_fields
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if fields == ['direct']:
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fields = None
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elif fields == ['full']:
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fields = [k for k, v in iter_fields(obj)]
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try:
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for values in self.weboob.do(self._complete, self.options.count, fields, function, *args, **kwargs):
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yield values
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except CallErrors, e:
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if len(e.errors) == 1 and isinstance(e.errors[0][1], FieldNotFound):
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logging.error(e.errors[0][1])
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else:
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raise
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# options related methods
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def _handle_options(self):
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if self.options.formatter:
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formatter_name = self.options.formatter
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else:
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formatter_name = 'multiline'
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self.formatter = load_formatter(formatter_name)
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if self.options.no_header:
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self.formatter.display_header = False
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if self.options.no_keys:
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self.formatter.display_keys = False
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if self.options.select:
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self.selected_fields = self.options.select.split(',')
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else:
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self.selected_fields = ['direct']
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if self.options.condition:
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self.condition = ResultsCondition(self.options.condition)
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else:
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self.condition = None
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if self.options.count == 0:
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self._parser.error('Count must be at least 1, or negative for infinite')
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elif self.options.count < 0:
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# infinite search
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self.options.count = None
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# default REPL commands
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def do_quit(self, arg):
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"""
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Quit the application.
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"""
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return True
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def do_EOF(self, arg):
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"""
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Quit the command line interpreter when ^D is pressed.
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"""
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# print empty line for the next shell prompt to appear on the first column of the terminal
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print
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return self.do_quit(arg)
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def get_command_help(self, command, short=False):
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try:
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doc = getattr(self, 'do_' + command).__doc__
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except AttributeError:
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return None
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if doc:
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doc = '\n'.join(line.strip() for line in doc.strip().split('\n'))
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if short:
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doc = doc.split('\n')[0]
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if not doc.startswith(command):
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doc = command
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return doc
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def do_help(self, arg=None, return_only=False):
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if return_only:
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stringio = StringIO()
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old_stdout = self.stdout
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self.stdout = stringio
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if arg:
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cmd_names = set(name[3:] for name in self.get_names() if name.startswith('do_'))
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if arg in cmd_names:
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command_help = self.get_command_help(arg)
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if command_help is None:
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logging.warning(u'Command "%s" is undocumented' % arg)
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else:
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self.stdout.write('%s\n' % command_help)
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else:
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logging.error(u'Unknown command: "%s"' % arg)
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else:
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names = set(name for name in self.get_names() if name.startswith('do_'))
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application_cmds_doc = []
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weboob_cmds_doc = []
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cmds_undoc = []
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for name in sorted(names):
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cmd = name[3:]
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if cmd in self.hidden_commands.union(['help']):
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continue
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elif getattr(self, name).__doc__:
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short_help = ' %s' % self.get_command_help(cmd, short=True)
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if cmd in self.weboob_commands:
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weboob_cmds_doc.append(short_help)
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else:
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application_cmds_doc.append(short_help)
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else:
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cmds_undoc.append(cmd)
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application_cmds_header = '%s commands' % self.APPNAME.capitalize()
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self.stdout.write('%s\n%s\n' % (application_cmds_header, '-' * len(application_cmds_header)))
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self.stdout.write('\n'.join(application_cmds_doc) + '\n\n')
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weboob_cmds_header = 'Generic Weboob commands'
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self.stdout.write('%s\n%s\n' % (weboob_cmds_header, '-' * len(weboob_cmds_header)))
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self.stdout.write('\n'.join(weboob_cmds_doc) + '\n\n')
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self.print_topics(self.undoc_header, cmds_undoc, 15,80)
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self.stdout.write('Type "help <command>" for more info about a command.\n')
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if return_only:
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self.stdout = old_stdout
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return stringio.getvalue()
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def emptyline(self):
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"""
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By default, an emptyline repeats the previous command.
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Overriding this function disables this behaviour.
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"""
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pass
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def default(self, line):
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logging.error(u'Unknown command: "%s"' % line)
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def completenames(self, text, *ignored):
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return ['%s ' % name for name in cmd.Cmd.completenames(self, text, *ignored) if name not in self.hidden_commands]
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def completion_helper(self, text, choices):
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if text:
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return [x for x in choices if x.startswith(text)]
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else:
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return choices
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def do_backends(self, line):
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"""
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backends [ACTION] [BACKEND_NAME]...
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Select used backends.
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ACTION is one of the following (default: list):
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* enable enable given backends
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* disable disable given backends
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* only enable given backends and disable the others
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* list display enabled and available backends
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"""
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if not line:
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args = ['list']
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else:
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args = line.split()
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action = args[0]
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given_backend_names = args[1:]
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if action in ('enable', 'disable', 'only'):
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if not given_backend_names:
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logging.error(u'Please give at least a backend name.')
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given_backends = set(backend for backend in self.weboob.iter_backends() if backend.name in given_backend_names)
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if action == 'enable':
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action_func = self.enabled_backends.add
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for backend in given_backends:
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try:
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action_func(backend)
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except KeyError, e:
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logging.error(e)
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elif action == 'disable':
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action_func = self.enabled_backends.remove
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for backend in given_backends:
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try:
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action_func(backend)
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except KeyError, e:
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logging.info('%s is not enabled' % e)
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elif action == 'only':
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self.enabled_backends = set()
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action_func = self.enabled_backends.add
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for backend in given_backends:
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try:
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action_func(backend)
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except KeyError, e:
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logging.error(e)
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elif action == 'list':
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print 'Available: %s' % ', '.join(sorted(backend.name for backend in self.weboob.iter_backends()))
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print 'Enabled: %s' % ', '.join(sorted(backend.name for backend in self.enabled_backends))
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else:
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logging.error(u'Unknown action: "%s"' % action)
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return False
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def complete_backends(self, text, line, begidx, endidx):
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choices = None
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commands = ['enable', 'disable', 'only', 'list']
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available_backends_names = set(backend.name for backend in self.weboob.iter_backends())
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enabled_backends_names = set(backend.name for backend in self.enabled_backends)
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args = line.split()
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if len(args) == 1 or len(args) == 2 and args[1] not in commands:
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choices = commands
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elif len(args) == 2 and args[1] in commands or \
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len(args) == 3 and args[1] in ('enable', 'only') and args[2] not in available_backends_names or \
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len(args) == 3 and args[1] == 'disable' and args[2] not in enabled_backends_names:
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if args[1] in ('enable', 'only'):
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choices = sorted(available_backends_names - enabled_backends_names)
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elif args[1] == 'disable':
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choices = sorted(enabled_backends_names)
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if choices is not None:
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return ['%s ' % choice for choice in choices if choice.startswith(text)] if text else choices
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def do_count(self, line):
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"""
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count [NUMBER]
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If an argument is given, set the maximum number of results fetched.
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Otherwise, display the current setting.
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Count must be at least 1, or negative for infinite.
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"""
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if line:
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try:
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self.options.count = int(line)
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except ValueError, e:
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print e
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if self.options.count == 0:
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print 'count must be at least 1, or negative for infinite'
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elif self.options.count < 0:
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self.options.count = None
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else:
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print self.options.count
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def do_select(self, line):
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"""
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select [FIELD_NAME]... | "direct" | "full"
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"""
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if line:
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self.selected_fields = line.split()
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else:
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print ' '.join(self.selected_fields)
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# user interaction related methods
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def ask(self, question, default=None, masked=False, regexp=None, choices=None):
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"""
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Ask a question to user.
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@param question text displayed (str)
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@param default optional default value (str)
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@param masked if True, do not show typed text (bool)
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@param regexp text must match this regexp (str)
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@return entered text by user (str)
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"""
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is_bool = False
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if choices:
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question = u'%s (%s)' % (question, '/'.join(
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[s for s in (choices.iterkeys() if isinstance(choices, dict) else choices)]))
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if default is not None:
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if isinstance(default, bool):
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question = u'%s (%s/%s)' % (question, 'Y' if default else 'y', 'n' if default else 'N')
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choices = ('y', 'n', 'Y', 'N')
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default = 'y' if default else 'n'
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is_bool = True
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else:
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question = u'%s [%s]' % (question, default)
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if masked:
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question = u'(input chars are hidden) %s' % question
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question += ': '
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correct = False
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while not correct:
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line = getpass.getpass(question) if masked else raw_input(question)
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if not line and default is not None:
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line = default
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correct = (not regexp or re.match(regexp, unicode(line))) and \
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(not choices or unicode(line) in
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[unicode(s) for s in (choices.iterkeys() if isinstance(choices, dict) else choices)])
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if is_bool:
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return line.lower() == 'y'
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else:
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return line
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# formatting related methods
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def set_default_formatter(self, name):
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if not self.options.formatter:
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try:
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self.formatter = load_formatter(name)
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except ImportError:
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default_name = 'multiline'
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logging.error('Could not load default formatter "%s" for this command. Falling back to "%s".' % (
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name, default_name))
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self.formatter = load_formatter(default_name)
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def set_formatter_header(self, string):
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self.formatter.set_header(string)
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def format(self, result):
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fields = self.selected_fields
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if fields == ['direct'] or fields == ['full']:
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fields = None
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try:
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self.formatter.format(obj=result, selected_fields=fields, condition=self.condition)
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except FieldNotFound, e:
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logging.error(e)
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except ResultsConditionException, e:
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logging.error(e)
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def parse_id(self, _id):
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try:
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_id, backend_name = _id.rsplit('@', 1)
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except ValueError:
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backend_name = None
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return _id, backend_name
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