-"""The `playlist` module provides :class:`PlaylistPlugin` several
-associated :class:`hooke.command.Command`\s for handling
+# Copyright (C) 2010 W. Trevor King <wking@drexel.edu>
+#
+# This file is part of Hooke.
+#
+# Hooke is free software: you can redistribute it and/or modify it
+# under the terms of the GNU Lesser General Public License as
+# published by the Free Software Foundation, either version 3 of the
+# License, or (at your option) any later version.
+#
+# Hooke is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+# or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General
+# Public License for more details.
+#
+# You should have received a copy of the GNU Lesser General Public
+# License along with Hooke. If not, see
+# <http://www.gnu.org/licenses/>.
+
+"""The ``playlist`` module provides :class:`PlaylistPlugin` and
+several associated :class:`hooke.command.Command`\s for handling
:mod:`hooke.playlist` classes.
"""
import glob
+import os.path
from ..command import Command, Argument, Failure
from ..playlist import FilePlaylist
class PlaylistPlugin (Builtin):
def __init__(self):
super(PlaylistPlugin, self).__init__(name='playlist')
-
- def commands(self):
- return [NextCommand(), PreviousCommand(), JumpCommand(),
- IndexCommand(), CurveListCommand(),
- SaveCommand(), LoadCommand(),
- AddCommand(), AddGlobCommand(),
- RemoveCommand(), FilterCommand(), NoteFilterCommand()]
+ self._commands = [
+ NextCommand(self), PreviousCommand(self), JumpCommand(self),
+ GetCommand(self), IndexCommand(self), CurveListCommand(self),
+ SaveCommand(self), LoadCommand(self),
+ AddCommand(self), AddGlobCommand(self),
+ RemoveCommand(self), FilterCommand(self), NoteFilterCommand(self)]
# Define common or complicated arguments
PlaylistArgument = Argument(
name='playlist', type='playlist', callback=current_playlist_callback,
help="""
-:class:`hooke.plugin.playlist.Playlist` to act on. Defaults to the
-current playlist.
+:class:`hooke.playlist.Playlist` to act on. Defaults to the current
+playlist.
""".strip())
def playlist_name_callback(hooke, command, argument, value):
- return hooke.playlists.free_name()
+ if value != None:
+ return value
+ i = 0
+ names = [p.name for p in hooke.playlists]
+ while True:
+ name = 'playlist-%d' % i
+ if name not in names:
+ return name
+ i += 1
PlaylistNameArgument = Argument(
name='name', type='string', optional=True, callback=playlist_name_callback,
class NextCommand (Command):
"""Move playlist to the next curve.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(NextCommand, self).__init__(
name='next curve',
arguments=[PlaylistArgument],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].next()
class PreviousCommand (Command):
"""Move playlist to the previous curve.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(PreviousCommand, self).__init__(
name='previous curve',
arguments=[PlaylistArgument],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].previous()
class JumpCommand (Command):
"""Move playlist to a given curve.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(JumpCommand, self).__init__(
name='jump to curve',
arguments=[
Index of target curve.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].jump(params['index'])
The first curve has index 0.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(IndexCommand, self).__init__(
name='curve index',
arguments=[
PlaylistArgument,
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
- outqueue.put(params['playlist']._index)
+ outqueue.put(params['playlist'].index())
+
+class GetCommand (Command):
+ """Return a :class:`hooke.playlist.Playlist`.
+ """
+ def __init__(self, plugin):
+ super(GetCommand, self).__init__(
+ name='get playlist',
+ arguments=[PlaylistArgument],
+ help=self.__doc__, plugin=plugin)
+
+ def _run(self, hooke, inqueue, outqueue, params):
+ outqueue.put(params['playlist'])
class CurveListCommand (Command):
"""Get the curves in a playlist.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(CurveListCommand, self).__init__(
name='playlist curves',
- arguments=[
- PlaylistArgument,
- ],
- help=self.__doc__)
+ arguments=[PlaylistArgument],
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
- outqueue.put([c for c in params['playlist']])
+ outqueue.put(list(params['playlist']))
class SaveCommand (Command):
"""Save a playlist.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(SaveCommand, self).__init__(
name='save playlist',
arguments=[
Argument(name='output', type='file',
help="""
File name for the output playlist. Defaults to overwriting the input
-playlist.
+playlist. If the playlist does not have an input file (e.g. it was
+created from scratch with 'new playlist'), this option is required.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].save(params['output'])
class LoadCommand (Command):
"""Load a playlist.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(LoadCommand, self).__init__(
name='load playlist',
arguments=[
Drivers for loading curves.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
p = FilePlaylist(drivers=params['drivers'], path=params['input'])
class AddCommand (Command):
"""Add a curve to a playlist.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(AddCommand, self).__init__(
name='add curve to playlist',
arguments=[
Additional information for the input :class:`hooke.curve.Curve`.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].append_curve_by_path(params['input'],
command you can use globs (`data/curves/*.dat`) to add curves
for all matching files at once.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(AddGlobCommand, self).__init__(
name='glob curves to playlist',
arguments=[
PlaylistArgument,
- Argument(name='input', type='glob', optional=False,
+ Argument(name='input', type='string', optional=False,
help="""
File name glob for the input :class:`hooke.curve.Curve`.
""".strip()),
Additional information for the input :class:`hooke.curve.Curve`.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
for path in sorted(glob.glob(params['input'])):
class RemoveCommand (Command):
"""Remove a curve from a playlist.
"""
- def __init__(self):
+ def __init__(self, plugin):
super(RemoveCommand, self).__init__(
name='remove curve from playlist',
arguments=[
Index of target curve.
""".strip()),
],
- help=self.__doc__)
+ help=self.__doc__, plugin=plugin)
def _run(self, hooke, inqueue, outqueue, params):
params['playlist'].pop(params['index'])
- params['playlist'].jump(params._index)
+ params['playlist'].jump(params.index())
class FilterCommand (Command):
"""Create a subset playlist via a selection function.
Removing lots of curves one at a time can be tedious. With this
command you can use a function `filter` to select the curves you
wish to keep.
+
+ Notes
+ -----
+ There are issues with pickling functions bound to class
+ attributes, because the pickle module doesn't know where those
+ functions were originally defined (where it should point the
+ loader). Because of this, subclasses with hard-coded filter
+ functions are encouraged to define their filter function as a
+ method of their subclass. See, for example,
+ :meth:`NoteFilterCommand.filter`.
"""
- def __init__(self):
+ def __init__(self, plugin, name='filter playlist'):
super(FilterCommand, self).__init__(
- name='filter playlist',
+ name=name,
arguments=[
PlaylistArgument,
PlaylistNameArgument,
+ ],
+ help=self.__doc__, plugin=plugin)
+ if not hasattr(self, 'filter'):
+ self.arguments.append(
Argument(name='filter', type='function', optional=False,
help="""
-Function returning `True` for "good" curves. `filter(curve) -> True/False`.
-""".strip()),
- ],
- help=self.__doc__)
+Function returning `True` for "good" curves.
+`filter(curve, hooke, inqueue, outqueue, params) -> True/False`.
+""".strip()))
def _run(self, hooke, inqueue, outqueue, params):
- p = params['playlist'].filter(params['filter'])
- hooke.playlists.add(p)
+ if not hasattr(self, 'filter'):
+ filter_fn = params['filter']
+ else:
+ filter_fn = self.filter
+ p = params['playlist'].filter(filter_fn,
+ hooke=hooke, inqueue=inqueue, outqueue=outqueue, params=params)
+ p.name = params['name']
+ if hasattr(p, 'path') and p.path != None:
+ p.set_path(os.path.join(os.path.dirname(p.path), p.name))
+ hooke.playlists.append(p)
outqueue.put(p)
class NoteFilterCommand (FilterCommand):
"""Create a subset playlist of curves with `.info['note'] != None`.
"""
- def __init__(self):
- super(NoteFilterCommand, self).__init__()
- self.name = 'note filter playlist'
- self.arguments = [a for a in self.arguments if a.name != 'filter']
+ def __init__(self, plugin):
+ super(NoteFilterCommand, self).__init__(
+ plugin, name='note filter playlist')
- def _run(self, hooke, inqueue, outqueue, params):
- params['filter'] = lambda curve : \
- 'note' in curve.info and curve.info['note'] != None
- return super(NoteFilterCommand, self)._run(
- hooke, inqueue, outqueue, params)
+ def filter(self, curve, hooke, inqueue, outqueue, params):
+ return 'note' in curve.info and curve.info['note'] != None
projects / hooke.git / blobdiff