else:
            return str(bin)
    except:
        pass


# Search through ./channels/ and get module basenames.
# (Reordering channel tabs is now done by uikit.apply_state.)
#
def module_list():

    # Should list plugins within zips as well as local paths
    ls = pkgutil.iter_modules([conf.share+"/channels", "channels"])
    return [name for loader,name,ispkg in ls]









# Plugin meta data extraction
#
# Extremely crude version for Python and streamtuner2 plugin usage.
# But can fetch from different sources:
#  · fn= to read from literal files, out of a .pyzip package
#  · src= to extract from pre-read script code
#  · module= utilizes pkgutil to read 
#  · frame= automatically extract comment header from caller
#
def plugin_meta(fn=None, src=None, module=None, frame=1):

    # try via pkgutil first
    if module:
       fn = module
       src = pkgutil.get_data("channels", fn+".py")

    # get source directly from caller
    elif not src and not fn:
        module = inspect.getmodule(sys._getframe(frame))
        fn = inspect.getsourcefile(module)
        src = inspect.getcomments(module)

    # within zip archive or dir?
    elif fn:
        zip = rx.zipfn.match(fn)
        if zip and zipfile.is_zipfile(zip.group(1)):
            src = zipfile.ZipFile(zip.group(1), "r").read(zip.group(2))
        else:
            src = open(fn).read(4096)

    return plugin_meta_extract(src, fn)


# Actual comment extraction logic
def plugin_meta_extract(src="", fn="", literal=False):

    # defaults
    meta = {
        "id": os.path.basename(fn or "").split(".")[0],
        "fn": fn,
        "title": fn, "description": "no description", "config": [],
        "type": "module", "api": "python", "doc": ""
    }

    # extract coherent comment block, split doc section
    if not literal:
        src = rx.comment.search(src)
        if not src:
            __print__(dbg.ERR, "Couldn't read source meta information", fn)
            return meta
        src = src.group(0)
        src = rx.hash.sub("", src).strip()
    
    # split comment block
    if src.find("\n\n") > 0:
        src, meta["doc"] = src.split("\n\n", 1)


    # key:value fields into dict
    for field in rx.keyval.findall(src):
        meta[field[0]] = field[1].strip()
    meta["config"] = plugin_meta_config(meta.get("config") or "")

    return meta

# Unpack config: structures
def plugin_meta_config(str):
    config = []
    for entry in rx.config.findall(str):
        opt = { "type": None, "name": None, "description": "", "value": None }
        for field in rx.options.findall(entry):
            opt[field[0]] = (field[1] or field[2] or field[3] or "").strip()
        config.append(opt)