keyboard.py

#!/usr/bin/python2 -tt

import subprocess

# input keyevent 26 !! 26 turns off the screen!
# input keyevent 66 --> ENTER

# adb subprocess
adb = None

def main():
	# Listen for user input including ENTER
	print 'Input your text'
	global adb
	# Needs the stdout PIPE otherwise gets automatically redirected in my stdout
	adb = subprocess.Popen(["adb", "shell"], shell=False, stdin=subprocess.PIPE, stdout=subprocess.PIPE)
	try:
		while(True):
			process_input()

	except KeyboardInterrupt: #Ctrl-C
		print "\nCtrl^C received --> dying now"
		adb.stdin.write("exit\n")
		adb.terminate()

def process_input():
	user_input = raw_input('')
	# If input is empty or only is ENTER
	if not user_input or user_input == "\n":
		return
	# Split sentence into words
	words = user_input.split(' ');

	# loop on all words
	for word in words:
		# Call adb shell input
		send_word(word)
		send_space()

	send_eol_combo()

def send_eol_combo():
	send_key(22) # Right to reach the Send button
	send_enter() # ENTER to push the Send button
	send_key(21) # Left to give the focus back to the text input
	return

def send_space():
	send_key(62)

def send_enter():
	send_key(66)

# Key should be an int
def send_key(key):
	adb.stdin.write("input keyevent %d\n" % key)

def send_word(text):
	# Escape characters that adb doesn't like 
	escape_chars = {
			"'": "\\'",
			'"': '\\"',
			"(": "\\(",
			")": "\\)"
	}
	for key, value in escape_chars.iteritems():
		text = text.replace(key, value)
	# Send the escaped text to adb
	adb.stdin.write("input text %s\n" % text)

if __name__ == '__main__':
	main()