kaylee/kaylee.py

#!/usr/bin/env python3

# This is part of Kaylee
# -- this code is licensed GPLv3
# Copyright 2015-2016 Clayton G. Hobbs
# Portions Copyright 2013 Jezra

import sys
import signal
import os.path
import subprocess
from gi.repository import GObject, GLib

from recognizer import Recognizer
from config import Config
from languageupdater import LanguageUpdater
from numberparser import NumberParser
from hasher import Hasher


class Kaylee:

    def __init__(self):
        self.ui = None
        self.options = {}
        ui_continuous_listen = False
        self.continuous_listen = False

        # Load configuration
        self.config = Config()
        self.options = vars(self.config.options)
        self.commands = self.options['commands']

        # Create number parser for later use
        self.number_parser = NumberParser()

        # Create a hasher
        self.hasher = Hasher(self.config)

        # Create the strings file
        self.update_strings_file_if_changed()

        if self.options['interface']:
            if self.options['interface'] == "g":
                from gtkui import UI
            elif self.options['interface'] == "gt":
                from gtktrayui import UI
            else:
                print("no GUI defined")
                sys.exit()

            self.ui = UI(self.options, self.options['continuous'])
            self.ui.connect("command", self.process_command)
            # Can we load the icon resource?
            icon = self.load_resource("icon.png")
            if icon:
                self.ui.set_icon_active_asset(icon)
            # Can we load the icon_inactive resource?
            icon_inactive = self.load_resource("icon_inactive.png")
            if icon_inactive:
                self.ui.set_icon_inactive_asset(icon_inactive)

        if self.options['history']:
            self.history = []

        # Update the language if necessary
        self.language_updater = LanguageUpdater(self.config)
        self.language_updater.update_language_if_changed()

        # Create the recognizer
        self.recognizer = Recognizer(self.config)
        self.recognizer.connect('finished', self.recognizer_finished)

    def update_voice_commands_if_changed(self):
        """Use hashes to test if the voice commands have changed"""
        stored_hash = self.hasher['voice_commands']

        # Calculate the hash the voice commands have right now
        hasher = self.hasher.get_hash_object()
        for voice_cmd in self.commands.keys():
            hasher.update(voice_cmd.encode('utf-8'))
            # Add a separator to avoid odd behavior
            hasher.update('\n'.encode('utf-8'))
        new_hash = hasher.hexdigest()

        if new_hash != stored_hash:
            self.create_strings_file()
            self.hasher['voice_commands'] = new_hash
            self.hasher.store()

    def create_strings_file(self):
        # Open the strings file
        with open(self.config.strings_file, 'w') as strings:
            # Add command words to the corpus
            for voice_cmd in sorted(self.commands.keys()):
                strings.write(voice_cmd.strip().replace('%d', '') + "\n")
            # Add number words to the corpus
            for word in self.number_parser.number_words:
                strings.write(word + "\n")

    def log_history(self, text):
        if self.options['history']:
            self.history.append(text)
            if len(self.history) > self.options['history']:
                # Pop off the first item
                self.history.pop(0)

            # Open and truncate the history file
            with open(self.config.history_file, 'w') as hfile:
                for line in self.history:
                    hfile.write(line + '\n')

    def run_command(self, cmd):
        """Print the command, then run it"""
        print(cmd)
        subprocess.call(cmd, shell=True)

    def recognizer_finished(self, recognizer, text):
        t = text.lower()
        numt, nums = self.number_parser.parse_all_numbers(t)
        # Is there a matching command?
        if t in self.commands:
            # Run the valid_sentence_command if it's set
            if self.options['valid_sentence_command']:
                subprocess.call(self.options['valid_sentence_command'],
                                shell=True)
            cmd = self.commands[t]
            # Should we be passing words?
            if self.options['pass_words']:
                cmd += " " + t
            self.run_command(cmd)
            self.log_history(text)
        elif numt in self.commands:
            # Run the valid_sentence_command if it's set
            if self.options['valid_sentence_command']:
                subprocess.call(self.options['valid_sentence_command'],
                                shell=True)
            cmd = self.commands[numt]
            cmd = cmd.format(*nums)
            # Should we be passing words?
            if self.options['pass_words']:
                cmd += " " + t
            self.run_command(cmd)
            self.log_history(text)
        else:
            # Run the invalid_sentence_command if it's set
            if self.options['invalid_sentence_command']:
                subprocess.call(self.options['invalid_sentence_command'],
                                shell=True)
            print("no matching command {0}".format(t))
        # If there is a UI and we are not continuous listen
        if self.ui:
            if not self.continuous_listen:
                # Stop listening
                self.recognizer.pause()
            # Let the UI know that there is a finish
            self.ui.finished(t)

    def run(self):
        if self.ui:
            self.ui.run()
        else:
            self.recognizer.listen()

    def quit(self):
        sys.exit()

    def process_command(self, UI, command):
        print(command)
        if command == "listen":
            self.recognizer.listen()
        elif command == "stop":
            self.recognizer.pause()
        elif command == "continuous_listen":
            self.continuous_listen = True
            self.recognizer.listen()
        elif command == "continuous_stop":
            self.continuous_listen = False
            self.recognizer.pause()
        elif command == "quit":
            self.quit()

    def load_resource(self, string):
        local_data = os.path.join(os.path.dirname(__file__), 'data')
        paths = ["/usr/share/kaylee/", "/usr/local/share/kaylee", local_data]
        for path in paths:
            resource = os.path.join(path, string)
            if os.path.exists(resource):
                return resource
        # If we get this far, no resource was found
        return False


if __name__ == "__main__":
    # Make our kaylee object
    kaylee = Kaylee()
    # Init gobject threads
    GObject.threads_init()
    # We want a main loop
    main_loop = GObject.MainLoop()
    # Handle sigint
    signal.signal(signal.SIGINT, signal.SIG_DFL)
    # Run the kaylee
    kaylee.run()
    # Start the main loop
    try:
        main_loop.run()
    except:
        print("time to quit")
        main_loop.quit()
        sys.exit()