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#!/usr/bin/env python
import ctypes, fcntl, os, sys
import select
import uinputmapper
import uinputmapper.linux_uinput
from uinputmapper.cinput import *
from uinputmapper.mapper import KeyMapper, parse_conf, pretty_conf_print
try:
import cPickle as pickle
except ImportError:
import pickle
import argparse
_usage = 'input-read /dev/input/event<0> ... /dev/input/event<N>'
parser = argparse.ArgumentParser(description='Read input devices.',
usage = _usage)
parser.add_argument('--version', action='version', version='0.01')
parser.add_argument('-D', '--dump', action='store_false',
default=True, help='Dump will marshall all the events to stdout')
parser.add_argument('-v', '--verbose', action='store_true',
default=False, help='Enable verbose mode (do not combine with -D)')
parser.add_argument('-k', '--keymap', dest='keymap',
help='Python keymap configuration to source')
parser.add_argument('-C', '--compat', action='store_true',
help='Enable compatibility mode; for Python < 2.7')
parser.add_argument('-ng', '--no-grab', action='store_true',
default=False, help='Will not grab input devices, so other programs like X might still read from them')
parser.add_argument('-d', '--direct', action='store_true',
default=False, help='Will directly create input devices to send events to, instead of piping to input-create')
parser.add_argument('-c', '--config', metavar='config', nargs='*',
help='Path to config files you would normally send into input-create, implies --direct')
parser.add_argument('input_file', metavar='input_file', nargs='+',
help='/dev/input/event<0> ... /dev/input/event<N>')
args = parser.parse_args()
args.has_config = args.config != None and len(args.config) > 0
#print 'args:',args
#exit(0)
# Open input devices
fs = map(InputDevice, args.input_file)
# Create configuration
config = {}
for idx, f in enumerate(fs):
c = parse_conf(f, idx)
config.update(c)
if args.has_config:
# Allow configurations to change our current configuration
args.direct = True
for path in args.config:
config_merge = imp.load_source('', path).config_merge
config_merge(config)
if args.verbose:
pretty_conf_print(config)
poll_obj, poll_mask = (select.poll, select.POLLIN) if args.compat else \
(select.epoll, select.EPOLLIN)
# Add all devices to epoll
pp = poll_obj()
for f in fs:
pp.register(f.get_fd(), poll_mask)
# Human readable info
if args.dump:
for f in fs:
print 'Version:', f.get_version()
print f.get_name()
d = f.get_exposed_events()
for k, v in d.iteritems():
print k + ':', ', '.join(v)
else:
# Dump initial information over pickle to stdout
p = pickle.Pickler(sys.stdout)
p.dump(len(fs))
p.dump(config)
sys.stdout.flush()
# parse keymap
if args.keymap:
from uinputmapper.keymapper import parse_keymap
runtime_keymaps, active_keymap_index, revert_keymap_index, active_keymap, revert_default_code, switch_layout_codes, switch_layout_mode, num_codes_to_index, caps_lock_no_effect = parse_keymap(args, rev_event_keys, event_keys)
shift_down = -1
caps_locked = False # todo: get/set this a sane way?
rshift = event_keys[1]['KEY_RIGHTSHIFT']
lshift = event_keys[1]['KEY_LEFTSHIFT']
capslck = event_keys[1]['KEY_CAPSLOCK']
if args.direct:
# setup a new input device
m = KeyMapper(config)
# Get number of output devices (determined from config)
from uinputmapper.mapper import get_exported_device_count
nofd = get_exported_device_count(config)
# Create and expose uinput devices
ofs = []
for fd in xrange(nofd):
d = UInputDevice()
m.expose(d, fd)
d.setup('keymapper input device')
ofs.append(d)
# grab all inputs so nothing else reads them :)
if not args.no_grab:
for idx, f in enumerate(fs):
f.grab()
# try to free as much memory as we can before entering loop
from gc import collect as gc_collect
gc_collect()
while True:
events = pp.poll()
for e in events:
fd, ev_mask = e
if not ev_mask & poll_mask:
continue
# Lets undo that epoll speedup ;-) FIXME XXX
for idx, _ in enumerate(fs):
if _.get_fd() == fd:
f = _
i = idx
ev = f.next_event()
pre_event = None
post_event = None
if args.keymap:
#if ev.type == 4: # MSC_SCAN, works for some keyboards (serio) but not others (usb), not needed if we grab the input
# ev.value = active_keymap[ev.value]
if ev.type == 1: # EV_KEY
new_code, invert_shift = active_keymap[ev.code].get_code(ev.code, caps_locked != (shift_down != -1))
# we want some events to happen when a key is first pressed or lifted
if ev.value == 1: # pressed
if ev.code == lshift or ev.code == rshift: # shift
shift_down = ev.code
elif ev.code == capslck: # caps locked
caps_locked = not caps_locked
if caps_locked and caps_lock_no_effect[new_code]:
invert_shift = not invert_shift
if invert_shift: # swap shift behavior
# if (invert_shift and not(caps_locked and caps_lock_no_effect[new_code])) or (not(invert_shift) and (caps_locked and caps_lock_no_effect[new_code])): # not as clean as above?
pre_event = input_event(ev.time, 1, shift_down, 0)
if shift_down == -1:
pre_event.code = lshift
pre_event.value = 1
if ev.code == revert_default_code:
active_keymap = runtime_keymaps[revert_keymap_index]
elif ev.code in switch_layout_codes:
switch_layout_codes[ev.code] = True
# so loop through switch_layout_codes and see if all are True
switch_layout_mode = True
for x,y in switch_layout_codes.iteritems():
switch_layout_mode &= y
elif switch_layout_mode and ev.code in num_codes_to_index:
active_keymap_index = num_codes_to_index[ev.code]
active_keymap = runtime_keymaps[active_keymap_index]
# and continue so as to not send this key
continue
elif ev.value == 0: # lifted
if ev.code == lshift or ev.code == rshift: # shift
shift_down = -1
if caps_locked and caps_lock_no_effect[new_code]:
invert_shift = not invert_shift
if invert_shift: # swap shift behavior
post_event = input_event(ev.time, 1, shift_down, 1)
if shift_down == -1:
post_event.code = lshift
post_event.value = 0
if ev.code == revert_default_code:
active_keymap = runtime_keymaps[active_keymap_index]
elif ev.code in switch_layout_codes:
switch_layout_codes[ev.code] = False
switch_layout_mode = False
# now actually map the key
ev.code = new_code
if args.direct:
# try to fire our own events?
if args.has_config:
idx, ev = m.map_event(ev, i)
d = ofs[idx]
else:
d = ofs[i]
if pre_event is not None:
d.fire_event(pre_event)
d.fire_event(ev)
if post_event is not None:
d.fire_event(post_event)
elif args.dump:
for ev in [pre_event, ev, post_event]:
if ev is not None:
try:
print i, ev.time.tv_sec, ev.time.tv_usec
s = '%s(%d) %s(%d) %d' % (rev_events[ev.type], ev.type, rev_event_keys[ev.type][ev.code], ev.code, ev.value)
print 'Event type:', s
except KeyError:
pass
else:
if not args.compat:
if pre_event is not None:
p.dump((i, pre_event))
p.dump((i, ev))
if post_event is not None:
p.dump((i, post_event))
else:
if pre_event is not None:
p.dump((i, (pre_event.time.tv_sec, pre_event.time.tv_usec, pre_event.type, pre_event.code, pre_event.value)))
p.dump((i, (ev.time.tv_sec, ev.time.tv_usec, ev.type, ev.code, ev.value)))
if post_event is not None:
p.dump((i, (post_event.time.tv_sec, post_event.time.tv_usec, post_event.type, post_event.code, post_event.value)))
sys.stdout.flush()