Internet radio browser GUI for music/video streams from various directory services.

⌈⌋ branch:  streamtuner2


Check-in [7726e18571]

Overview
Comment:Less indentation, starting to overhaul action.save() at least. (Whole `action` module is overdue.)
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | trunk
Files: files | file ages | folders
SHA1: 7726e185716a60596f4040b0d84b2cfa1cd1c3e0
User & Date: mario on 2015-04-07 05:54:57
Other Links: manifest | tags
Context
2015-04-07
05:55
Temporary export mechanism (saves whole category into .pls file). check-in: 8b7b270591 user: mario tags: trunk
05:54
Less indentation, starting to overhaul action.save() at least. (Whole `action` module is overdue.) check-in: 7726e18571 user: mario tags: trunk
05:53
Fix a few CLI bugs (doesn't work yet with dynamic module list), stub_parent() implementations for non-GUI mode should be merged. check-in: a7c3f7336a user: mario tags: trunk
Changes

Makefile became a regular file with contents [d3f05bad3b].

Modified action.py from [93903d7a98] to [b136303bf1].

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# encoding: UTF-8
# api: streamtuner2
# type: functions
# title: play/record actions
# description: Starts audio applications, guesses MIME types for URLs
# version: 0.7
#
# Multimedia interface for starting audio players, recording app,
# or web browser (listed as "url/http" association in players).
#
# Each channel plugin has a .listtype which describes the linked
# audio playlist format. It's audio/x-scpls mostly, seldomly m3u,
# but sometimes url/direct if the entry[url] directly leads to the






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# encoding: UTF-8
# api: streamtuner2
# type: functions
# title: play/record actions
# description: Starts audio applications, guesses MIME types for URLs
# version: 0.8
#
# Multimedia interface for starting audio players, recording app,
# or web browser (listed as "url/http" association in players).
#
# Each channel plugin has a .listtype which describes the linked
# audio playlist format. It's audio/x-scpls mostly, seldomly m3u,
# but sometimes url/direct if the entry[url] directly leads to the
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import re
import os
import ahttp as http
from config import conf, __print__, dbg
import platform



main = None


#-- media actions                           ---------------------------------------------
#
# implements "play" and "record" methods,
# but also "browser" for web URLs
#        
class action:

        # streamlink formats




        lt = {"asx":"video/x-ms-asf", "pls":"audio/x-scpls", "m3u":"audio/x-mpegurl", "xspf":"application/xspf+xml", "href":"url/http", "ram":"audio/x-pn-realaudio", "smil":"application/smil"}





        # media formats

        mf = {"mp3":"audio/mpeg", "ogg":"audio/ogg", "aac":"audio/aac"}



        
        
        # web
        @staticmethod
        def browser(url):
            bin = conf.play.get("url/http", "sensible-browser")
            __print__( dbg.CONF, bin )
            action.run(bin + " " + action.quote(url))


            
        # os shell cmd escaping
        @staticmethod
        def quote(s):
            if conf.windows:
                return str(s)   # should actually be "\\\"%s\\\"" % s
            else:
                return "%r" % str(s)


        # calls player for stream url and format
        @staticmethod
        def play(url, audioformat="audio/mpeg", listformat="text/x-href"):
            if (url):
                url = action.url(url, listformat)
            if audioformat == "audio/mp3":
                audioformat = "audio/mpeg"
            cmd = action.mime_match(audioformat, conf.play)
            try:
                __print__( dbg.PROC, "play", url, cmd )
                action.run( action.interpol(cmd, url) )
            except:
                pass

        
        # exec wrapper
        @staticmethod
        def run(cmd):
            if conf.windows:
                os.system("start \"%s\"")
            else:
                os.system(cmd + " &")


        # streamripper
        @staticmethod
        def record(url, audioformat="audio/mpeg", listformat="text/x-href", append="", row={}):
            __print__( dbg.PROC, "record", url )
            cmd = action.mime_match(audioformat, conf.record)
            try: action.run( action.interpol(cmd, url, row) + append )
            except: pass


        # Convert MIME type into list of ["audio/xyz", "audio/*", "*/*"] for comparison against record/play association
        @staticmethod
        def mime_match(fmt, cmd_list):
            for match in [ fmt, fmt[:fmt.find("/")] + "/*", "*/*" ]:
                if cmd_list.get(match, None):
                    return cmd_list[match]


        # save as .m3u
        @staticmethod
        def save(row, fn, listformat="audio/x-scpls"):




            # modify stream url
            row["url"] = action.url(row["url"], listformat)
            stream_urls = action.extract_urls(row["url"], listformat)
            # output format

            if (re.search("\.m3u", fn)):
                txt = "#M3U\n"
                for url in stream_urls:
                    txt += http.fix_url(url) + "\n"
            # output format

            elif (re.search("\.pls", fn)):
                txt = "[playlist]\n" + "numberofentries=1\n"
                for i,u in enumerate(stream_urls):
                    i = str(i + 1)
                    txt += "File"+i + "=" + u + "\n"
                    txt += "Title"+i + "=" + row["title"] + "\n"
                    txt += "Length"+i + "=-1\n"
                txt += "Version=2\n"
            # output format

            elif (re.search("\.xspf", fn)):
                txt = '<?xml version="1.0" encoding="UTF-8"?>' + "\n"
                txt += '<?http header="Content-Type: application/xspf+xml" ?>' + "\n"
                txt += '<playlist version="1" xmlns="http://xspf.org/ns/0/">' + "\n"
                for attr,tag in [("title","title"), ("homepage","info"), ("playing","annotation"), ("description","annotation")]:
                    if row.get(attr):
                        txt += "  <"+tag+">" + xmlentities(row[attr]) + "</"+tag+">\n"
                txt += "  <trackList>\n"
                for u in stream_urls:
                    txt += '	<track><location>' + xmlentities(u) + '</location></track>' + "\n"
                txt += "  </trackList>\n</playlist>\n"


            # output format

            elif (re.search("\.json", fn)):


                row["stream_urls"] = stream_urls
                txt = str(row)   # pseudo-json (python format)
            # output format

            elif (re.search("\.asx", fn)):
                txt = "<ASX version=\"3.0\">\n"			\
                    + " <Title>" + xmlentities(row["title"]) + "</Title>\n"	\
                    + " <Entry>\n"				\
                    + "  <Title>" + xmlentities(row["title"]) + "</Title>\n"	\
                    + "  <MoreInfo href=\"" + row["homepage"] + "\"/>\n"	\
                    + "  <Ref href=\"" + stream_urls[0] + "\"/>\n"		\
                    + " </Entry>\n</ASX>\n"
            # output format

            elif (re.search("\.smil", fn)):
                txt = "<smil>\n<head>\n  <meta name=\"title\" content=\"" + xmlentities(row["title"]) + "\"/>\n</head>\n"	\
                    + "<body>\n  <seq>\n    <audio src=\"" + stream_urls[0] + "\"/>\n  </seq>\n</body>\n</smil>\n"

            # unknown
            else:

                txt = ""
            # write
            if txt:
                f = open(fn, "wb")
                f.write(txt)
                f.close()
            pass


        # replaces instances of %u, %l, %pls with urls / %g, %f, %s, %m, %m3u or local filenames
        @staticmethod
        def interpol(cmd, url, row={}):
            # inject other meta fields
            if row:
                for field in row:
                    cmd = cmd.replace("%"+field, "%r" % row.get(field))
            # add default if cmd has no %url placeholder
            if cmd.find("%") < 0:
                cmd = cmd + " %m3u"
            # standard placeholders
            if (re.search("%(url|pls|[ulr])", cmd)):
                cmd = re.sub("%(url|pls|[ulr])", action.quote(url), cmd)
            if (re.search("%(m3u|[fgm])", cmd)):
                cmd = re.sub("%(m3u|[fgm])", action.quote(action.m3u(url)), cmd)
            if (re.search("%(srv|[ds])", cmd)):
                cmd = re.sub("%(srv|[ds])", action.quote(action.srv(url)), cmd)
            return cmd


        # eventually transforms internal URN/IRI to URL
        @staticmethod
        def url(url, listformat):
            if (listformat == "audio/x-scpls"):
                url = url
            elif (listformat == "text/x-urn-streamtuner2-script"):
                url = main.special.stream_url(url)
            else:
                url = url
            return url

            
        # download a .pls resource and extract urls
        @staticmethod
        def pls(url):
            text = http.get(url)
            __print__( dbg.DATA, "pls_text=", text )
            return re.findall("\s*File\d*\s*=\s*(\w+://[^\s]+)", text, re.I)
            # currently misses out on the titles            
            
        # get a single direct ICY stream url (extract either from PLS or M3U)
        @staticmethod
        def srv(url):
            return action.extract_urls(url)[0]


        # retrieve real stream urls from .pls or .m3u links
        @staticmethod
        def extract_urls(pls, listformat="__not_used_yet__"):
            # extract stream address from .pls URL
            if (re.search("\.pls", pls)):       #audio/x-scpls
                return action.pls(pls)
            elif (re.search("\.asx", pls)):	#video/x-ms-asf
                return re.findall("<Ref\s+href=\"(http://.+?)\"", http.get(pls))
            elif (re.search("\.m3u|\.ram|\.smil", pls)):	#audio/x-mpegurl
                return re.findall("(http://[^\s]+)", http.get(pls), re.I)
            else:  # just assume it was a direct mpeg/ogg streamserver link
                return [ (pls if pls.startswith("/") else http.fix_url(pls)) ]
            pass


        # generate filename for temporary .m3u, if possible with unique id
        @staticmethod
        def tmp_fn(pls):
            # use shoutcast unique stream id if available
            stream_id = re.search("http://.+?/.*?(\d+)", pls, re.M)
            stream_id = stream_id and stream_id.group(1) or "XXXXXX"
            try:
                channelname = main.current_channel
            except:
                channelname = "unknown"
            return (str(conf.tmp) + os.sep + "streamtuner2."+channelname+"."+stream_id+".m3u", len(stream_id) > 3 and stream_id != "XXXXXX")
        
        # check if there are any urls in a given file
        @staticmethod
        def has_urls(tmp_fn):
            if os.path.exists(tmp_fn):
                return open(tmp_fn, "r").read().find("http://") > 0
            
        
        # create a local .m3u file from it
        @staticmethod
        def m3u(pls):
        
            # temp filename
            (tmp_fn, unique) = action.tmp_fn(pls)
            # does it already exist?
            if tmp_fn and unique and conf.reuse_m3u and action.has_urls(tmp_fn):
                return tmp_fn

            # download PLS
            __print__( dbg.DATA, "pls=",pls )
            url_list = action.extract_urls(pls)
            __print__( dbg.DATA, "urls=", url_list )

            # output URL list to temporary .m3u file
            if (len(url_list)):
                #tmp_fn = 
                f = open(tmp_fn, "w")
                f.write("#M3U\n")
                f.write("\n".join(url_list) + "\n")
                f.close()
                # return path/name of temporary file
                return tmp_fn
            else:
                __print__( dbg.ERR, "error, there were no URLs in ", pls )
                raise "Empty PLS"


        # open help browser                
        @staticmethod
        def help(*args):
        
            action.run("yelp /usr/share/doc/streamtuner2/help/")
            #or action.browser("/usr/share/doc/streamtuner2/")

#class action









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import re
import os
import ahttp as http
from config import conf, __print__, dbg
import platform


# coupling to main window
main = None


#-- media actions
#
# implements "play" and "record" methods,
# but also "browser" for web URLs
#        
class action:

    # streamlink map
    lt = dict(
       asx = "video/x-ms-asf",
       pls = "audio/x-scpls",
       m3u = "audio/x-mpegurl",
       xspf = "application/xspf+xml",
       href = "url/http",
       src = "url/direct",
       ram = "audio/x-pn-realaudio",
       smil = "application/smil",
    )
    # media map
    mf = dict(
       mp3 = "audio/mpeg",
       ogg = "audio/ogg",
       aac = "audio/aac",
    )
    
    
    # web
    @staticmethod
    def browser(url):
        bin = conf.play.get("url/http", "sensible-browser")
        __print__( dbg.CONF, bin )
        action.run(bin + " " + action.quote(url))


        
    # os shell cmd escaping
    @staticmethod
    def quote(s):
        if conf.windows:
            return str(s)   # should actually be "\\\"%s\\\"" % s
        else:
            return "%r" % str(s)


    # calls player for stream url and format
    @staticmethod
    def play(url, audioformat="audio/mpeg", listformat="text/x-href"):
        if (url):
            url = action.url(url, listformat)
        if audioformat == "audio/mp3":
            audioformat = "audio/mpeg"
        cmd = action.mime_match(audioformat, conf.play)
        try:
            __print__( dbg.PROC, "play", url, cmd )
            action.run( action.interpol(cmd, url) )
        except:
            pass

    
    # exec wrapper
    @staticmethod
    def run(cmd):
        if conf.windows:
            os.system("start \"%s\"")
        else:
            os.system(cmd + " &")


    # streamripper
    @staticmethod
    def record(url, audioformat="audio/mpeg", listformat="text/x-href", append="", row={}):
        __print__( dbg.PROC, "record", url )
        cmd = action.mime_match(audioformat, conf.record)
        try: action.run( action.interpol(cmd, url, row) + append )
        except: pass


    # Convert MIME type into list of ["audio/xyz", "audio/*", "*/*"] for comparison against record/play association
    @staticmethod
    def mime_match(fmt, cmd_list):
        for match in [ fmt, fmt[:fmt.find("/")] + "/*", "*/*" ]:
            if cmd_list.get(match, None):
                return cmd_list[match]


    # save as .m3u
    @staticmethod
    def save(row, fn, listformat="audio/x-scpls"):

        # output format
        format = re.findall("\.(m3u|pls|xspf|jspf|json|asx|smil)", fn)

        # modify stream url
        row["url"] = action.url(row["url"], listformat)
        stream_urls = action.extract_urls(row["url"], listformat)

        # M3U
        if "m3u" in format:
            txt = "#M3U\n"
            for url in stream_urls:
                txt += http.fix_url(url) + "\n"

        # PLS
        elif "pls" in format:
            txt = "[playlist]\n" + "numberofentries=1\n"
            for i,u in enumerate(stream_urls):
                i = str(i + 1)
                txt += "File"+i + "=" + u + "\n"
                txt += "Title"+i + "=" + row["title"] + "\n"
                txt += "Length"+i + "=-1\n"
            txt += "Version=2\n"

        # XSPF
        elif "xspf" in format:
            txt = '<?xml version="1.0" encoding="UTF-8"?>' + "\n"
            txt += '<?http header="Content-Type: application/xspf+xml" ?>' + "\n"
            txt += '<playlist version="1" xmlns="http://xspf.org/ns/0/">' + "\n"
            for attr,tag in [("title","title"), ("homepage","info"), ("playing","annotation"), ("description","annotation")]:
                if row.get(attr):
                    txt += "  <"+tag+">" + xmlentities(row[attr]) + "</"+tag+">\n"
            txt += "  <trackList>\n"
            for u in stream_urls:
                txt += '	<track><location>' + xmlentities(u) + '</location></track>' + "\n"
            txt += "  </trackList>\n</playlist>\n"

        # JSPF
        elif "jspf" in format:
            pass

        # JSON
        elif "json" in format:
            row["stream_urls"] = stream_urls
            txt = str(row)   # pseudo-json (python format)
        
        # ASX
        elif "asx" in format:
            txt = "<ASX version=\"3.0\">\n"			\
                + " <Title>" + xmlentities(row["title"]) + "</Title>\n"	\
                + " <Entry>\n"				\
                + "  <Title>" + xmlentities(row["title"]) + "</Title>\n"	\
                + "  <MoreInfo href=\"" + row["homepage"] + "\"/>\n"	\
                + "  <Ref href=\"" + stream_urls[0] + "\"/>\n"		\
                + " </Entry>\n</ASX>\n"

        # SMIL
        elif "smil" in format:
                txt = "<smil>\n<head>\n  <meta name=\"title\" content=\"" + xmlentities(row["title"]) + "\"/>\n</head>\n"	\
                    + "<body>\n  <seq>\n    <audio src=\"" + stream_urls[0] + "\"/>\n  </seq>\n</body>\n</smil>\n"

        # unknown
        else:
            return

        # write
        if txt:
            f = open(fn, "wb")
            f.write(txt)
            f.close()
        pass


    # replaces instances of %u, %l, %pls with urls / %g, %f, %s, %m, %m3u or local filenames
    @staticmethod
    def interpol(cmd, url, row={}):
        # inject other meta fields
        if row:
            for field in row:
                cmd = cmd.replace("%"+field, "%r" % row.get(field))
        # add default if cmd has no %url placeholder
        if cmd.find("%") < 0:
            cmd = cmd + " %m3u"
        # standard placeholders
        if (re.search("%(url|pls|[ulr])", cmd)):
            cmd = re.sub("%(url|pls|[ulr])", action.quote(url), cmd)
        if (re.search("%(m3u|[fgm])", cmd)):
            cmd = re.sub("%(m3u|[fgm])", action.quote(action.m3u(url)), cmd)
        if (re.search("%(srv|[ds])", cmd)):
            cmd = re.sub("%(srv|[ds])", action.quote(action.srv(url)), cmd)
        return cmd


    # eventually transforms internal URN/IRI to URL
    @staticmethod
    def url(url, listformat):
        if (listformat == "audio/x-scpls"):
            url = url
        elif (listformat == "text/x-urn-streamtuner2-script"):
            url = main.special.stream_url(url)
        else:
            url = url
        return url

        
    # download a .pls resource and extract urls
    @staticmethod
    def pls(url):
        text = http.get(url)
        __print__( dbg.DATA, "pls_text=", text )
        return re.findall("\s*File\d*\s*=\s*(\w+://[^\s]+)", text, re.I)
        # currently misses out on the titles            
        
    # get a single direct ICY stream url (extract either from PLS or M3U)
    @staticmethod
    def srv(url):
        return action.extract_urls(url)[0]


    # retrieve real stream urls from .pls or .m3u links
    @staticmethod
    def extract_urls(pls, listformat="__not_used_yet__"):
        # extract stream address from .pls URL
        if (re.search("\.pls", pls)):       #audio/x-scpls
            return action.pls(pls)
        elif (re.search("\.asx", pls)):	#video/x-ms-asf
            return re.findall("<Ref\s+href=\"(http://.+?)\"", http.get(pls))
        elif (re.search("\.m3u|\.ram|\.smil", pls)):	#audio/x-mpegurl
            return re.findall("(http://[^\s]+)", http.get(pls), re.I)
        else:  # just assume it was a direct mpeg/ogg streamserver link
            return [ (pls if pls.startswith("/") else http.fix_url(pls)) ]
        pass


    # generate filename for temporary .m3u, if possible with unique id
    @staticmethod
    def tmp_fn(pls):
        # use shoutcast unique stream id if available
        stream_id = re.search("http://.+?/.*?(\d+)", pls, re.M)
        stream_id = stream_id and stream_id.group(1) or "XXXXXX"
        try:
            channelname = main.current_channel
        except:
            channelname = "unknown"
        return (str(conf.tmp) + os.sep + "streamtuner2."+channelname+"."+stream_id+".m3u", len(stream_id) > 3 and stream_id != "XXXXXX")
    
    # check if there are any urls in a given file
    @staticmethod
    def has_urls(tmp_fn):
        if os.path.exists(tmp_fn):
            return open(tmp_fn, "r").read().find("http://") > 0
        
    
    # create a local .m3u file from it
    @staticmethod
    def m3u(pls):
    
        # temp filename
        (tmp_fn, unique) = action.tmp_fn(pls)
        # does it already exist?
        if tmp_fn and unique and conf.reuse_m3u and action.has_urls(tmp_fn):
            return tmp_fn

        # download PLS
        __print__( dbg.DATA, "pls=",pls )
        url_list = action.extract_urls(pls)
        __print__( dbg.DATA, "urls=", url_list )

        # output URL list to temporary .m3u file
        if (len(url_list)):
            #tmp_fn = 
            f = open(tmp_fn, "w")
            f.write("#M3U\n")
            f.write("\n".join(url_list) + "\n")
            f.close()
            # return path/name of temporary file
            return tmp_fn
        else:
            __print__( dbg.ERR, "error, there were no URLs in ", pls )
            raise "Empty PLS"


    # open help browser                
    @staticmethod
    def help(*args):

        action.run("yelp /usr/share/doc/streamtuner2/help/")





Modified channels/bookmarks.py from [26db498411] to [dbf59ee271].

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        self.save()
        self.load(self.default)
        self.urls.append(row["url"])


    # simplified gtk TreeStore display logic (just one category for the moment, always rebuilt)
    def load(self, category, force=False):
        __print__(dbg.UI, category, self.streams.keys())
        self.streams[category] = self.update_streams(category)
        #self.liststore[category] = \
        uikit.columns(self.gtk_list, self.datamap, self.prepare(self.streams[category]))


    # add a categories[]/streams{} subcategory, update treeview
    def add_category(self, cat, plugin=None):







<







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        self.save()
        self.load(self.default)
        self.urls.append(row["url"])


    # simplified gtk TreeStore display logic (just one category for the moment, always rebuilt)
    def load(self, category, force=False):

        self.streams[category] = self.update_streams(category)
        #self.liststore[category] = \
        uikit.columns(self.gtk_list, self.datamap, self.prepare(self.streams[category]))


    # add a categories[]/streams{} subcategory, update treeview
    def add_category(self, cat, plugin=None):