kaylee/blather.py

#!/usr/bin/env python3

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

from __future__ import print_function
import sys
import signal
import hashlib
import os.path
import subprocess
from gi.repository import GObject, GLib
import json

from recognizer import Recognizer
from config import Config
from languageupdater import LanguageUpdater


class Blather:

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

        self.commands = {}

        # Load configuration
        self.config = Config()
        self.options = vars(self.config.options)

        # Read the commands
        self.read_commands()

        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 read_commands(self):
        # Read the commands file
        file_lines = open(self.config.command_file)
        strings = open(self.config.strings_file, "w")
        for line in file_lines:
            # Trim the white spaces
            line = line.strip()
            # If the line has length and the first char isn't a hash
            if len(line) and line[0] != "#":
                # This is a parsible line
                (key, value) = line.split(":", 1)
                self.commands[key.strip().lower()] = value.strip()
                strings.write(key.strip() + "\n")
        # Close the strings file
        strings.close()

    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 blather history file
            hfile = open(self.config.history_file, "w")
            for line in self.history:
                hfile.write(line + "\n")
            # Close the file
            hfile.close()

    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()
        # Is there a matching command?
        if t in self.commands:
            # Run the valid_sentence_command if there is a valid sentence command
            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)
            else:
                self.run_command(cmd)
            self.log_history(text)
        else:
            # Run the invalid_sentence_command if there is an invalid sentence command
            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:
            blather.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/blather/", "/usr/local/share/blather", 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 blather object
    blather = Blather()
    # 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 blather
    blather.run()
    # Start the main loop
    try:
        main_loop.run()
    except:
        print("time to quit")
        main_loop.quit()
        sys.exit()