"url/direct":           "srv",
    "url/youtube":          "href",
    "url/http":             "href",
    "audio/x-pn-realaudio": "ram",
    "application/smil":     "smil",
    "application/vnd.ms-wpl":"smil",
    "x-urn/st2-script":     "script", # unused
    "application/x-shockwave-flash": "href",  # fallback
}

# Audio type MIME map
mediafmt_t = {
    "audio/mpeg":   "mp3",
    "audio/ogg":    "ogg",
    "audio/aac" :   "aac",
    "audio/aacp" :  "aac",
    "audio/midi":   "midi",
    "audio/mod":    "mod",
    "audio/it+zip": "mod",
    "audio/s3+zip": "mod",
    "audio/xm+zip": "mod",
}

# Player command placeholders for playlist formats
placeholder_map = dict(
    pls = "(%url | %pls | %u | %l | %r) \\b",
    m3u = "(%m3u | %f | %g | %m) \\b",
    srv = "(%srv | %d | %s) \\b",
)

# Playlist format content probing (assert type)
playlist_content_map = [
   ("pls",  r""" (?i)\[playlist\].*numberofentries """),
   ("xspf", r""" <\?xml .* <playlist .* http://xspf\.org/ns/0/ """),
   ("m3u",  r""" ^ \s* #(EXT)?M3U """),
   ("asx" , r""" <ASX\b """),
   ("smil", r""" <smil[^>]*> .* <seq> """),
   ("html", r""" <(audio|video)\b[^>]+\bsrc\s*=\s*["']?https?:// """),
   ("wpl",  r""" <\?wpl \s+ version="1\.0" \s* \?> """),
   ("b4s",  r""" <WinampXML> """),   # http://gonze.com/playlists/playlist-format-survey.html
   ("jspf", r""" ^ \s* \{ \s* "playlist": \s* \{ """),
   ("json", r""" "url": \s* "\w+:// """),
   ("href", r""" .* """),

]



# Exec wrapper
#
def run(cmd):
    debug(dbg.PROC, "Exec:", cmd)
    try:    os.system("start \"%s\"" % cmd if conf.windows else cmd + " &")
    except: debug(dbg.ERR, "Command not found:", cmd)


# Start web browser
#
def browser(url):

    else:
        return " ".join(["%r" % str(s) for s in ins])


# Convert e.g. "text/x-scpls" MIME types to just "pls" monikers
#
def listfmt(t = "pls"):
    return listfmt_t.get(t, t) # e.g. "pls" or still "text/x-unknown"






# Convert MIME type into list of ["audio/xyz", "audio/*", "*/*"]
# for comparison against configured record/play association.
def mime_app(fmt, cmd_list):
    major = fmt[:fmt.find("/")]
    for match in [ fmt, major + "/*", "*/*" ]:

    # standard placeholders
    for dest, rx in placeholder_map.items():
        if re.search(rx, cmd, re.X):
            # from .pls to .m3u
            urls = convert_playlist(url, listfmt(source), listfmt(dest))
            # insert quoted URL/filepath
            return re.sub(rx, quote(urls), cmd, 2, re.X)

    return "false"


# Substitute .pls URL with local .m3u,
# or direct srv address, or leave as-is.
#
def convert_playlist(url, source, dest):
    urls = []

    debug(dbg.PROC, "convert_playlist(", url, source, dest, ")")

    # Leave alone if format matches, or if "srv" URL class, or if it's a local path already

    if source == dest or source in ("srv", "href") or not re.search("\w+://", url):
        return [url]
    
    # Retrieve from URL
    (mime, cnt) = http_probe_get(url)
    
    # Leave streaming server as is
    if mime == "srv":
        cnt = ""
        return [url]

    # Test URL path "extension" for ".pls" / ".m3u" etc.
    ext = re.findall("\.(\w)$", url)
    ext = ext[0] if ext else ""

    # Probe MIME type and content per regex
    probe = None
    print cnt
    for probe,rx in playlist_content_map:
        if re.search(rx, cnt, re.X|re.S):
            probe = listfmt(probe)
            break # with `probe` set

    # Check ambiguity (except pseudo extension)
    if len(set([source, mime, probe])) > 1:
        debug(dbg.ERR, "Possible playlist format mismatch:", (source, mime, probe, ext))

    # Extract URLs from content
    for fmt,extractor in [ ("pls",extract_playlist.pls), ("asx",extract_playlist.asx), ("raw",extract_playlist.raw) ]:
        if not urls and fmt in (source, mime, probe, ext):
            urls = extractor(cnt)
            debug(fmt, extractor, urls)
            
    # Return original, or asis for srv targets
    if not urls:
        return [url]
    elif dest in ("srv", "href", "any"):
        return urls
    debug( urls )

    # Otherwise convert to local file
    fn = tmp_fn(cnt)
    save(urls[0], fn, dest)
    return [fn]



# Tries to fetch a resource, aborts on ICY responses.
#
def http_probe_get(url):

    # possible streaming request
    r = session.get(url, stream=True)
    if not len(r.headers):
        return ("srv", r)

    # extract payload
    mime = r.headers.get("content-type", "any")
    if listfmt_t.get(mime):
        mime = listfmt_t.get(mime)
    elif mimefmt_t.get(mime):
        mime = mimefmt_t.get(mime)
        return (mime, url)
    content = "\n".join(r.iter_lines())
    return (mime, content)



# Extract URLs from playlist formats:
#
class extract_playlist(object):

    @staticmethod
    def pls(text):
        return re.findall("\s*File\d*\s*=\s*(\w+://[^\s]+)", text, re.I)

    @staticmethod
    def asx(text):
        return re.findall("<Ref\s+href=\"(http://.+?)\"", text)

    @staticmethod
    def raw(text):
        debug(dbg.WARN, "Raw playlist extraction")
        return re.findall("([\w+]+://[^\s\"\'\>\#]+)", content)


# Save row(s) in one of the export formats,
# depending on file extension:
#
#  · m3u
#  · pls

    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")