import re
import copy
import inspect


# Only export plugin classes
__all__ = [
    "GenericChannel", "ChannelPlugin", "use_rx"
    "GenericChannel", "ChannelPlugin", "use_rx",
    "entity_decode", "strip_tags", "to_int", "nl"
]



# generic channel module                            ---------------------------------------
class GenericChannel(object):

        uikit.columns(self.gtk_list, self.datamap, [])
        
        # add to main menu
        uikit.add_menu([parent.channelmenuitems], self.meta["title"], lambda w: parent.channel_switch_by_name(self.module) or 1)


    # Statusbar stub (defers to parent/main window, if in GUI mode)
    def status(self, *v):
        if self.parent: self.parent.status(*v)
    def status(self, *args, **kw):
        if self.parent: self.parent.status(*args, **kw)
        else: log.INFO("status():", *v)


        
    #--------------------- streams/model data accesss ---------------------------

    # traverse category TreeModel to set current, expand parent nodes

    #--------------------------- utility functions -----------------------

    

    # remove html <tags> from string        
    def strip_tags(self, s):
        return re.sub("<.+?>", "", s)
        
    # convert audio format nick/shortnames to mime types, e.g. "OGG" to "audio/ogg"
    def mime_fmt(self, s):
        # clean string
        s = s.lower().strip()
        # rename
        map = {

            s = map[s]
        # add prefix:
        if s.find("/") < 1:
            s = "audio/" + s
        #
        return s
    
    # remove SGML/XML entities
    def entity_decode(self, str):
        return re.sub('&(#?(x?))(\w+);', self._entity, str)
    def _entity(self, sym):
        num, hex, name = sym.groups()
        if hex:
            return unichr(int(name, base=16))
        elif num:
            return unichr(int(name))
        else:
            return unichr(htmlentitydefs.name2codepoint[name])
    
    # convert special characters to &xx; escapes
    def xmlentities(self, s):
        return xml.sax.saxutils.escape(s)
    
    # Extracts integer from string
    def to_int(self, s):
        i = re.findall("\d+", s) or [0]
        return int(i[0])

        # try to initialize superclass now, before adding to channel tabs
        GenericChannel.gui(self, parent)

        # add notebook tab
        tab = parent.notebook_channels.insert_page_menu(vbox, ev_label, plain_label, -1)
        parent.notebook_channels.set_tab_reorderable(vbox, True)



# WORKAROUND for direct channel module imports,
# eases instantiations without GUI a little,
# reducing module dependencies (conf. / ahttp. / channels. / parent.) would be better
def stub_parent(object):
    def __setattr__(self, name, value):
        pass

            except Exception as e:
                log.ERR("{} extraction failed:".format(method), e)
                continue
        return []
    return try_both



#---------------- utility functions -------------------
# Used by raw page extraction in channel modules


# Strip html <tags> from string
def strip_tags(s):
    return re.sub("<.+?>", "", s)

# remove SGML/XML entities
def entity_decode(str):
    return re.sub('&(#?(x?))(\w+);', _entity, str)
def _entity(sym):
    num, hex, name = sym.groups()
    if hex:
        return unichr(int(name, base=16))
    elif num:
        return unichr(int(name))
    else:
        return unichr(htmlentitydefs.name2codepoint[name])

# Extracts integer from string
def to_int(s):
    i = re.findall("\d+", s) or [0]
    return int(i[0])

# Strip newlines
rx_spc = re.compile("\s+")
def nl(str):
    return rx_spc.sub(" ", str).strip()


def unhtml(str):
    return nl(entity_decode(strip_tags(str)))