186 lines
5.4 KiB
Python
186 lines
5.4 KiB
Python
"""
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Usage
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-----
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This plugin defines two new global commands: :term:`/alias` and :term:`/unalias`.
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.. glossary::
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/alias
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**Usage:** ``/alias <name> <command> [args]``
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This command will create a new command, named ``<name>`` (and callable
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with ``/name``), that runs ``/command``, with ``[args]`` as fixed
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args for the command.
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When you run the alias, you can also pass parameters to it, that will be
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given to the original command.
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Example: ::
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/alias toto say koin
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Will bind ``/say koin`` to ``/toto``, so this alias will work in any
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Chat tab. If someone calls it with ::
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/toto koin
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Poezio will then execute ``/say koin koin``.
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Also, you can rebind arguments arbitrarily, with the ``{}`` placeholder.
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For example, ::
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/alias toto say {} le {}
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/toto loulou coucou
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Will execute ``/say loulou le coucou``, because the ``{}`` are
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replaced with the command args, in the order they are given.
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Extra args are still added at the end of the command if provided
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(args used for the formatting are only used for the formatting).
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/unalias
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**Usage:** ``/unalias <name>``
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This command removes a defined alias.
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Config
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------
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The aliases are stored inside the configuration file for the plugin.
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You can either use the above commands or write it manually, and it
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will be read when the plugin is loaded.
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Example of the syntax:
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.. code-block:: ini
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[alias]
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toto = say {} le {}
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j = join {}@conference.jabber.org/nick
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jp = say je proteste
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"""
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from plugin import BasePlugin
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from common import shell_split
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class Plugin(BasePlugin):
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def init(self):
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self.api.add_command('alias', self.command_alias,
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usage='<alias> <command> [args]',
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short='Create an alias command',
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help='Create an alias for <command> with [args].')
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self.api.add_command('unalias', self.command_unalias,
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usage='<alias>',
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help='Remove a previously created alias',
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short='Remove an alias',
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completion=self.completion_unalias)
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self.commands = {}
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self.load_conf()
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def load_conf(self):
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"""
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load stored aliases on startup
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"""
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for alias in self.config.options():
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full = self.config.get(alias, '')
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if full:
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self.command_alias(alias + ' ' + full)
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def command_alias(self, line):
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"""
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/alias <alias> <command> [args]
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"""
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arg = split_args(line)
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if not arg:
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self.api.information('Alias: Not enough parameters', 'Error')
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return
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alias, command, args = arg
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if alias in self.commands:
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update = True
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elif alias in self.core.commands:
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self.api.information('Alias: command already exists', 'Error')
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return
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else:
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update = False
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self.config.set(alias, command + ' ' + args)
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self.commands[alias] = command_wrapper(generic_command, lambda: self.get_command(command), args)
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self.api.del_command(alias)
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self.api.add_command(alias, self.commands[alias], 'This command is an alias for /%s %s' %(alias, command))
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if update:
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self.api.information('Alias /%s updated' % alias, 'Info')
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else:
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self.api.information('Alias /%s successfuly created' % alias, 'Info')
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def command_unalias(self, alias):
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"""
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/unalias <existing alias>
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"""
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if alias in self.commands:
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del self.commands[alias]
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self.api.del_command(alias)
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self.config.set(alias, '')
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self.config.write()
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self.api.information('Alias /%s successfuly deleted' % alias, 'Info')
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def completion_unalias(self, the_input):
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"Completion for /unalias"
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aliases = [alias for alias in self.commands]
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aliases.sort()
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return the_input.auto_completion(aliases, '', quotify=False)
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def get_command(self, name):
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"""Returns the function associated with a command"""
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def dummy(args):
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"""Dummy function called if the command doesn’t exist"""
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pass
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if name in self.core.commands:
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return self.core.commands[name][0]
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elif name in self.api.current_tab().commands:
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return self.api.current_tab().commands[name][0]
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return dummy
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def split_args(line):
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"""
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Extract the relevant vars from the command line
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"""
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arg = line.split()
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if len(arg) < 2:
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return None
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alias_pos = line.find(' ')
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alias = line[:alias_pos]
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end = line[alias_pos+1:]
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args_pos = end.find(' ')
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command = end[:args_pos]
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args = end[args_pos+1:]
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return (alias, command, args)
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def generic_command(command, extra_args, args):
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"""
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Function that will execute the command and set the relevant
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parameters (format string, etc).
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"""
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args = shell_split(args)
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new_extra_args = extra_args.format(*args)
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count = extra_args.count('{}')
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args = args[count:]
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new_extra_args += ' '.join(args)
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return command()(new_extra_args)
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def command_wrapper(func, command, extra_args):
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"set the predefined arguments"
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def wrapper(*args, **kwargs):
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return func(command, extra_args, *args, **kwargs)
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return wrapper
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