/usr/share/pyshared/libopensesame/sequence.py is in opensesame 0.27.4-2.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 | #-*- coding:utf-8 -*-
"""
This file is part of OpenSesame.
OpenSesame is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OpenSesame 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 General Public License for more details.
You should have received a copy of the GNU General Public License
along with OpenSesame. If not, see <http://www.gnu.org/licenses/>.
"""
from libopensesame import item, exceptions
import openexp.keyboard
class sequence(item.item):
"""The sequence item"""
description = u'Runs a number of items in sequence'
def __init__(self, name, experiment, string=None):
"""
Constructor.
Arguments:
name -- The name of the item.
experiment -- The experiment.
Keyword arguments:
string -- The item definition string. (default=None)
"""
self.items = []
self.flush_keyboard = u'yes'
item.item.__init__(self, name, experiment, string)
def run(self):
"""Runs the sequence."""
# Optionally flush the responses to catch escape presses
if self._keyboard != None:
self._keyboard.flush()
for item, cond in self._items:
if eval(cond):
self.experiment.items[item].run()
def parse_run(self, i):
"""
Parses a run line from the definition script.
Arguments:
i -- A list of words, corresponding to a single script line.
Returns:
An (item_name, conditional) tuple.
"""
name = i[1]
cond = u'always'
if len(i) > 2:
cond = i[2]
return i[1], cond
def from_string(self, string):
"""
Parses a definition string.
Arguments:
string -- A definition string.
"""
for i in string.split(u'\n'):
self.parse_variable(i)
i = self.split(i.strip())
if len(i) > 0:
if i[0] == u'run' and len(i) > 1:
self.items.append(self.parse_run(i))
def prepare(self):
"""Prepares the sequence."""
item.item.prepare(self)
if self.get(u'flush_keyboard') == u'yes':
# Create a keyboard to flush responses at the start of the run phase
self._keyboard = openexp.keyboard.keyboard(self.experiment)
else:
self._keyboard = None
self._items = []
for _item, cond in self.items:
if _item not in self.experiment.items:
raise exceptions.runtime_error( \
u"Could not find item '%s', which is called by sequence item '%s'" \
% (_item, self.name))
self.experiment.items[_item].prepare()
self._items.append( (_item, self.compile_cond(cond)) )
def to_string(self):
"""
Encodes the sequence as a definition string.
Returns:
A definition string.
"""
s = item.item.to_string(self, self.item_type)
for _item, cond in self.items:
s += u'\trun %s "%s"\n' % (_item, cond)
return s
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