kaylee/Blather.py

#!/usr/bin/env python2

# -- this code is licensed GPLv3
# Copyright 2013 Jezra

import sys
import signal
from gi.repository import GObject
import os.path
import subprocess
from optparse import OptionParser
try:
    import yaml
except:
    print "YAML is not supported. ~/.config/blather/options.yaml will not function"

# Where are the files?
conf_dir = os.path.expanduser("~/.config/blather")
lang_dir = os.path.join(conf_dir, "language")
command_file = os.path.join(conf_dir, "commands.conf")
strings_file = os.path.join(conf_dir, "sentences.corpus")
history_file = os.path.join(conf_dir, "blather.history")
opt_file = os.path.join(conf_dir, "options.yaml")
lang_file = os.path.join(lang_dir,'lm')
dic_file = os.path.join(lang_dir,'dic')
# Make the lang_dir if it doesn't exist
if not os.path.exists(lang_dir):
    os.makedirs(lang_dir)

class Blather:

    def __init__(self, opts):
        # Import the recognizer so Gst doesn't clobber our -h
        from Recognizer import Recognizer
        self.ui = None
        self.options = {}
        ui_continuous_listen = False
        self.continuous_listen = False

        self.commands = {}

        # Read the commands
        self.read_commands()

        # Load the options file
        self.load_options()

        # Merge the opts
        for k,v in opts.__dict__.items():
            if (not k in self.options) or opts.override:
                self.options[k] = v

        if self.options['interface'] != None:
            if self.options['interface'] == "q":
                from QtUI import UI
            elif 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(args, 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 = []

        # Create the recognizer
        try:
            self.recognizer = Recognizer(lang_file, dic_file, self.options['microphone'])
        except Exception, e:
            #no recognizer? bummer
            print 'error making recognizer'
            sys.exit()

        self.recognizer.connect('finished', self.recognizer_finished)

        print "Using Options: ", self.options

    def read_commands(self):
        # Read the commands file
        file_lines = open(command_file)
        strings = open(strings_file, "w")
        for line in file_lines:
            print line
            # 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)
                print key, value
                self.commands[key.strip().lower()] = value.strip()
                strings.write( key.strip()+"\n")
        # Close the strings file
        strings.close()

    def load_options(self):
        # Is there an opt file?
        try:
            opt_fh = open(opt_file)
            text = opt_fh.read()
            self.options = yaml.load(text)
        except:
            pass


    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(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 self.commands.has_key( t ):
            # 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 %s" % 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__":
    parser = OptionParser()
    parser.add_option("-i", "--interface",  type="string", dest="interface",
            action='store',
            help="Interface to use (if any). 'q' for Qt, 'g' for GTK, 'gt' for GTK system tray icon")

    parser.add_option("-c", "--continuous",
            action="store_true", dest="continuous", default=False,
            help="starts interface with 'continuous' listen enabled")

    parser.add_option("-p", "--pass-words",
            action="store_true", dest="pass_words", default=False,
            help="passes the recognized words as arguments to the shell command")

    parser.add_option("-o", "--override",
            action="store_true", dest="override", default=False,
            help="override config file with command line options")

    parser.add_option("-H", "--history", type="int",
            action="store", dest="history",
            help="number of commands to store in history file")

    parser.add_option("-m", "--microphone", type="int",
            action="store", dest="microphone", default=None,
            help="Audio input card to use (if other than system default)")

    parser.add_option("--valid-sentence-command",  type="string", dest="valid_sentence_command",
            action='store',
            help="command to run when a valid sentence is detected")

    parser.add_option( "--invalid-sentence-command",  type="string", dest="invalid_sentence_command",
            action='store',
            help="command to run when an invalid sentence is detected")

    (options, args) = parser.parse_args()
    # Make our blather object
    blather = Blather(options)
    # 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()