~m-buck/+junk/gtk-desktop-info

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#!/usr/bin/env python
# -*- coding: utf-8 -*-
###############################################################################
# plugin_rhythmbox.py is a plugin for gnome-desktop-info to display song info
# and cover art, when playing music in rhythmbox
#
#  Author: Kaivalagi
# Created: 23/11/2008
from optparse import OptionParser
from plugin_common import getHTMLText, getTypedValue, getFormattedDuration, isNumeric, getLyrics
import codecs
import fileinput
import logging
import os
import re
import shutil
import traceback
import urllib
import urllib2

try:
    import dbus
    DBUS_AVAIL = True
except ImportError:
    # Dummy D-Bus library
    class _Connection:
        get_object = lambda *a: object()
    class _Interface:
        __init__ = lambda *a: None
        ListNames = lambda *a: []
    class Dummy: pass
    dbus = Dummy()
    dbus.Interface = _Interface
    dbus.service = Dummy()
    dbus.service.method = lambda *a: lambda f: f
    dbus.service.Object = object
    dbus.SessionBus = _Connection
    DBUS_AVAIL = False

app_name = "gtk-desktop-info"
app_path = os.path.dirname(os.path.abspath(__file__))
module_name = __file__.replace(os.path.dirname (__file__) + "/", "").replace(".pyc","").replace(".py", "")

class MusicData:
    def __init__(self,status,coverart,title,album,length,artist,tracknumber,genre,year,filename,current_position_percent,current_position,rating,volume):
        self.status = status
        self.coverart = coverart
        self.title = title
        self.album = album
        self.length = length
        self.artist = artist
        self.tracknumber = tracknumber
        self.genre = genre
        self.year = year
        self.filename = filename
        self.current_position_percent = current_position_percent
        self.current_position = current_position
        self.rating = rating
        self.volume = volume

class BansheeConfig:
    HEADERTEMPLATE = None
    TEMPLATE = None
    STATUSTEXT = "Playing,Paused,Stopped"
    NOUNKNOWNOUTPUT = False

class Output:

    options = None
    output = u""
    error = u""
    musicData = None

    def __init__(self, options):
        self.bus = None
        self.options = options
        self.logger = logging.getLogger(app_name+"."+module_name)
        self.loadConfigData()

    def loadConfigData(self):
        try:

            self.config = BansheeConfig()

            if self.options.config != None:
                # load the config based on options passed in from the main app
                configfilepath = self.options.config
            else:
                # load plugin config from home directory of the user
                configfilepath = os.path.join(os.path.expanduser('~'), ".config/"+app_name+"/"+module_name+".config")

            if os.path.exists(configfilepath):

                self.logger.info("Loading config settings from \"%s\""%configfilepath)

                for line in fileinput.input(os.path.expanduser(configfilepath)):
                    line = line.strip()
                    if len(line) > 0 and line[0:1] != "#": # ignore commented lines or empty ones

                        splitpos = line.find("=")
                        name = line[:splitpos-1].strip().upper() # config setting name on the left of =
                        value = line[splitpos+1:].split("#")[0].strip()
                        
                        if len(value) > 0:
                            if name == "HEADERTEMPLATE":
                                self.config.HEADERTEMPLATE = getTypedValue(value, "string")
                            elif name == "TEMPLATE":
                                self.config.TEMPLATE = getTypedValue(value, "string")
                            elif name == "STATUSTEXT":
                                self.config.STATUSTEXT = getTypedValue(value, "string")
                            elif name == "NOUNKNOWNOUTPUT":
                                self.config.NOUNKNOWNOUTPUT = getTypedValue(value, "boolean")
                            else:
                                self.logger.error("Unknown option in config file: " + name)
            else:
                self.logger.info("Config data file %s not found, using defaults and setting up config file for next time" % configfilepath)

                userconfigpath = os.path.join(os.path.expanduser('~'), ".config/"+app_name+"/")
                configsource = os.path.join(app_path, "config/"+module_name+".config")

                if os.path.exists(userconfigpath) == False:
                    os.makedirs(userconfigpath)

                shutil.copy(configsource, configfilepath)

        except Exception, e:
            self.logger.error(e.__str__()+"\n"+traceback.format_exc())

    def getTypedValue(self, value, expectedtype):

        try:
            if len(value.strip(" ")) == 0:
                return None

            elif value.lower() == "true":
                if expectedtype == "boolean":
                    return True
                else:
                    self.logger.error("Expected type was '%s', but the value '%s' was given"%(expectedtype, value))

            elif value.lower() == "false":
                if expectedtype == "boolean":
                    return False
                else:
                    self.logger.error("Expected type was '%s', but the value '%s' was given"%(expectedtype, value))

            elif isNumeric(value) == True:
                if expectedtype == "integer":
                    return int(value)
                else:
                    self.logger.error("Expected type was '%s', but the value '%s' was given"%(expectedtype, value))

            else:
                return value

        except (TypeError, ValueError):
            self.logger.error("Cannot convert '%s' to expected type of '%s'"%(value,expectedtype))
            return value

    def testDBus(self, bus, interface):
        obj = bus.get_object('org.freedesktop.DBus', '/org/freedesktop/DBus')
        dbus_iface = dbus.Interface(obj, 'org.freedesktop.DBus')
        avail = dbus_iface.ListNames()
        return interface in avail

    def getOutputData(self, datatype, statustext, nounknownoutput):
        output = u""

        if DBUS_AVAIL == True:

            if nounknownoutput == True:
                unknown_time = ""
                unknown_number = ""
                unknown_string = ""
                unknown_coverart = "file://"+urllib.quote(os.path.join(app_path,"images/spacer.png"))
                unknown_rating = "file://"+urllib.quote(os.path.join(app_path,"images/spacer.png"))
            else:
                unknown_time = "0:00"
                unknown_number = "0"
                unknown_string = "Unknown"
                unknown_coverart = "file://"+urllib.quote(os.path.join(app_path,"images/"+module_name+".png"))
                unknown_rating = "file://"+urllib.quote(os.path.join(app_path,"images/ratingicons/0.png"))

            try:

                bus = dbus.SessionBus()

                if self.musicData == None:

                    if self.testDBus(bus, 'org.bansheeproject.Banshee'):

                        self.logger.info("Calling dbus interface for music data")

                        try:
                            self.logger.info("Setting up dbus interface")

                            # setup dbus hooks
                            remote_player = bus.get_object('org.bansheeproject.Banshee', '/org/bansheeproject/Banshee/PlayerEngine')
                            iface_player = dbus.Interface(remote_player, 'org.bansheeproject.Banshee.PlayerEngine')

                            self.logger.info("Calling dbus interface for music data")

                            # prepare song properties for data retrieval

                            volume = str(iface_player.GetVolume())

                            status = self.getStatusText(iface_player.GetCurrentState(), statustext)

                            # grab the data into variables
                            location = iface_player.GetCurrentUri()

                            # handle a file or stream differently for filename
                            if location.find("file://") != -1:
                                filename = location[location.rfind("/")+1:]
                            elif len(location) > 0:
                                filename = location
                            else:
                                filename = ""

                            # try to get all the normal stuff...the props return an empty string if nothing is available

                            props = iface_player.GetCurrentTrack()

                            if "name" in props:
                                title = props["name"]
                            else:
                                title = None
                                
                            if "album" in props:
                                album = props["album"]
                            else:
                                album = None
                                
                            if "artist" in props:
                                artist = props["artist"]
                            else:
                                artist = None
                                
                            if "year" in props:
                                year = str(props["year"])
                            else:
                                year = None
                            
                            if "track-number" in props:
                                tracknumber = str(props["track-number"])
                            else:
                                tracknumber = None
    
                            if year == "0": year = None
                            if tracknumber == "0": tracknumber = None

                            # TODO: get album art working for internet based (if feasible)...
                            # get coverart url or file link
                            if "artwork-id" in props:
                                coverart = os.path.join(os.path.expanduser("~/.cache/album-art/"),str(props["artwork-id"]) +".jpg")
                                if coverart.find("http://") != -1:
                                    coverart = coverart.encode("utf-8")
                                else:
                                    coverart = "file://"+urllib.quote(coverart.encode("utf-8"))
                            else:
                                # default coverart image for this plugin if none found
                                coverart = unknown_coverart

                            # common details
                            if "genre" in props:
                                genre = props["genre"]
                            else:
                                genre = None
                            
                            length_seconds = int(iface_player.GetLength() / 1000)
                            current_seconds = int(iface_player.GetPosition() / 1000)
                            current_position = str(int(current_seconds/60%60)).rjust(1,"0")+":"+str(int(current_seconds%60)).rjust(2,"0")

                            if length_seconds > 0:
                                length = getFormattedDuration(length_seconds)
                                current_position_percent = str(int((float(current_seconds) / float(length_seconds))*100))
                            else:
                                length = None
                                current_position_percent = None

                            rating = "0" # not supported

                            volume = str(iface_player.GetVolume())

                            self.musicData = MusicData(status,coverart,title,album,length,artist,tracknumber,genre,year,filename,current_position_percent,current_position,rating,volume)

                        except Exception, e:
                            self.logger.info("Issue calling the dbus service:"+e.__str__()+"\n"+traceback.format_exc())

                if self.musicData != None:

                    self.logger.info("Preparing output for datatype:"+datatype)

                    if datatype == "ST": #status
                        if self.musicData.status == None or len(self.musicData.status) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.status)

                    elif datatype == "CA": #coverart
                        if self.musicData.coverart == None or len(self.musicData.coverart) == 0:
                            output = None
                        else:
                            output = self.musicData.coverart

                    elif datatype == "TI": #title
                        if self.musicData.title == None or len(self.musicData.title) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.title)

                    elif datatype == "AL": #album
                        if self.musicData.album == None or len(self.musicData.album) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.album)

                    elif datatype == "AR": #artist
                        if self.musicData.artist == None or len(self.musicData.artist) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.artist)

                    elif datatype == "TN": #tracknumber
                        if self.musicData.tracknumber == None or len(self.musicData.tracknumber) == 0:
                            output = None
                        else:
                            output = self.musicData.tracknumber

                    elif datatype == "GE": #genre
                        if self.musicData.title == genre or len(self.musicData.genre) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.genre)

                    elif datatype == "YR": #year
                        if self.musicData.year == None or len(self.musicData.year) == 0:
                            output = None
                        else:
                            output = self.musicData.year

                    elif datatype == "FN": #filename
                        if self.musicData.filename == None or len(self.musicData.filename) == 0:
                            output = None
                        else:
                            output = getHTMLText(self.musicData.filename)

                    elif datatype == "LE": # length
                        if self.musicData.length == None or len(self.musicData.length) == 0:
                            output = None
                        else:
                            output = self.musicData.length

                    elif datatype == "PP": #current position in percent
                        if self.musicData.current_position_percent == None or len(self.musicData.current_position_percent) == 0:
                            output = None
                        else:
                            output = self.musicData.current_position_percent

                    elif datatype == "PT": #current position in time
                        if self.musicData.current_position == None or len(self.musicData.current_position) == 0:
                            output = None
                        else:
                            output = self.musicData.current_position

                    elif datatype == "VO": #volume
                        if self.musicData.volume == None or len(self.musicData.volume) == 0:
                            output = None
                        else:
                            output = self.musicData.volume

                    elif datatype == "RT": #rating
                        if self.musicData.rating == None or isNumeric(self.musicData.rating) == False:
                            output = None
                        else:
                            rating = int(self.musicData.rating)
                            if rating >= 0:
                                output = "file://"+urllib.quote(os.path.join(app_path,"images/ratingicons/"+str(rating)+".png"))
                            else:
                                output = None
                    elif datatype == "TL": #track lyrics
                        output = getLyrics(self.musicData.artist, self.musicData.title)
                    else:
                        self.logger.error("Unknown datatype provided: " + datatype)
                        return u""

            except Exception, e:
                self.logger.error(e.__str__()+"\n"+traceback.format_exc())

            if output == None or self.musicData == None:
                if datatype in ["LE","PT"]:
                    output = unknown_time
                elif datatype in ["PP","VO","YR","TN"]:
                    output = unknown_number
                elif datatype == "CA":
                    output = unknown_coverart
                elif datatype == "RT":
                    output = unknown_rating
                else:
                    output = unknown_string

            return output
            
    def getStatusText(self, status, statustext):

        if status != None:
            statustextparts = statustext.split(",")

            if status == "playing":
                return statustextparts[0]
            elif status == "paused":
                return statustextparts[1]
            elif status == "stopped":
                return statustextparts[2]

        else:
            return status

    def getTemplateItemOutput(self, template_text):

        # keys to template data
        DATATYPE_KEY = "datatype"
        STATUSTEXT_KEY = "statustext"
        NOUNKNOWNOUTPUT_KEY = "nounknownoutput"

        datatype = None
        statustext = self.config.STATUSTEXT #default to command line option
        nounknownoutput = self.config.NOUNKNOWNOUTPUT #default to command line option

        for option in template_text.split('--'):
            if len(option) == 0 or option.isspace():
                continue

            # not using split here...it can't assign both key and value in one call, this should be faster
            x = option.find('=')
            if (x != -1):
                key = option[:x].strip()
                value = option[x + 1:].strip()
                if value == "":
                    value = None
            else:
                key = option.strip()
                value = None

            try:
                if key == DATATYPE_KEY:
                    datatype = getTypedValue(value, "string")
                elif key == STATUSTEXT_KEY:
                    statustext = getTypedValue(value, "string")
                elif key == NOUNKNOWNOUTPUT_KEY:
                    nounknownoutput = True
                else:
                    self.logger.info("Unknown template option: " + option)

            except (TypeError, ValueError):
                self.logger.info("Cannot convert option argument to number: " + option)
                return u""

        if datatype != None:
            return self.getOutputData(datatype, statustext, nounknownoutput)
        else:
            self.logger.info("Template item does not have datatype defined")
            return u""


    def getOutputFromTemplate(self, template):
        output = u""
        end = False
        a = 0

        # a and b are indexes in the template string
        # moving from left to right the string is processed
        # b is index of the opening bracket and a of the closing bracket
        # everything between b and a is a template that needs to be parsed
        while not end:
            b = template.find('[', a)

            if b == -1:
                b = len(template)
                end = True

            # if there is something between a and b, append it straight to output
            if b > a:
                output += template[a : b]
                # check for the escape char (if we are not at the end)
                if template[b - 1] == '\\' and not end:
                    # if its there, replace it by the bracket
                    output = output[:-1] + '['
                    # skip the bracket in the input string and continue from the beginning
                    a = b + 1
                    continue

            if end:
                break

            a = template.find(']', b)

            if a == -1:
                self.logger.info("Missing terminal bracket (]) for a template item")
                return u""

            # if there is some template text...
            if a > b + 1:
                output += self.getTemplateItemOutput(template[b + 1 : a])

            a = a + 1

        return output

    def getOutput(self):

        if self.options.noheader == True:
            headertemplatefilepath = app_path+"/templates/nullheader.template"
            self.logger.info("Using custom header template file '%s'"%headertemplatefilepath)
        elif self.options.headertemplate != None and os.path.exists(os.path.expanduser(self.options.headertemplate)) == True:
            headertemplatefilepath = self.options.headertemplate
            self.logger.info("Using custom header template file '%s'"%headertemplatefilepath)
        elif self.config.HEADERTEMPLATE != None and os.path.exists(os.path.expanduser(self.config.HEADERTEMPLATE)) == True:
            headertemplatefilepath = self.config.HEADERTEMPLATE
            self.logger.info("Using custom header template file '%s'"%headertemplatefilepath)
        else:
            headertemplatefilepath = app_path+"/templates/bansheeheader.template"
            self.logger.info("Using default header template")

        # load the file
        try:
            inputfile = codecs.open(os.path.expanduser(headertemplatefilepath), encoding='utf-8')
        except Exception, e:
            self.logger.error("Error loading header template file: " + e.__str__()+"\n"+traceback.format_exc())
        else:
            headertemplate = inputfile.read()
        finally:
            inputfile.close()

        if self.options.template != None:
            templatefilepath = self.options.template
            self.logger.info("Using custom template file '%s'"%templatefilepath)
        elif self.config.TEMPLATE != None and os.path.exists(os.path.expanduser(self.config.TEMPLATE)) == True:
            templatefilepath = self.config.TEMPLATE
            self.logger.info("Using custom template file '%s'"%templatefilepath)
        else:
            templatefilepath = app_path+"/templates/banshee.template"
            self.logger.info("Using default template")

        #load the file
        try:
            inputfile = codecs.open(os.path.expanduser(templatefilepath), encoding='utf-8')
        except Exception, e:
            self.logger.error("Error loading template file: " + e.__str__()+"\n"+traceback.format_exc())
        else:
            template = inputfile.read()
        finally:
            inputfile.close()

        output = headertemplate
        output = output + self.getOutputFromTemplate(template)

        return output.encode("utf-8")

def getHTML(options):
    output = Output(options)
    html = output.getOutput()
    del output
    return html

# to enable testing in isolation
if __name__ == "__main__":

    parser = OptionParser()
    parser.add_option("--noheader", dest="noheader", default=False, action="store_true", help=u"Turn off header output. This will override any header template setting to be nothing")
    parser.add_option("--headertemplate", dest="headertemplate", type="string", metavar="FILE", help=u"Override the header template for the plugin, default or config based template ignored.")
    parser.add_option("--template", dest="template", type="string", metavar="FILE", help=u"Override the template for the plugin, default or config based template ignored.")
    parser.add_option("--verbose", dest="verbose", default=False, action="store_true", help=u"Outputs verbose info to the terminal")
    parser.add_option("--version", dest="version", default=False, action="store_true", help=u"Displays the version of the script.")
    parser.add_option("--logfile", dest="logfile", type="string", metavar="FILE", help=u"If a filepath is set, the script logs to the filepath.")

    (options, args) = parser.parse_args()

    output = Output(options)
    html = output.getOutput()
    del output
    print html