(cls, markup, is_html=False, search_entire_document=False)
return None
Given a document, tries to find its declared encoding.

        An XML encoding is declared at the beginning of the document.

        An HTML encoding is declared in a <meta> tag, hopefully near the
        beginning of the document.
Given a document, tries to find its declared encoding.
Given a document tries to find its declared encoding .
def find_declared_encoding(cls, markup, is_html=False, search_entire_document=False):
        """Given a document, tries to find its declared encoding.

        An XML encoding is declared at the beginning of the document.

        An HTML encoding is declared in a <meta> tag, hopefully near the
        beginning of the document.
        """
        if search_entire_document:
            xml_endpos = html_endpos = len(markup)
        else:
            xml_endpos = 1024
            html_endpos = max(2048, int(len(markup) * 0.05))
            
        declared_encoding = None
        declared_encoding_match = xml_encoding_re.search(markup, endpos=xml_endpos)
        if not declared_encoding_match and is_html:
            declared_encoding_match = html_meta_re.search(markup, endpos=html_endpos)
        if declared_encoding_match is not None:
            declared_encoding = declared_encoding_match.groups()[0].decode(
                'ascii')
        if declared_encoding:
            return declared_encoding.lower()
        return None
def find_declared_encoding ( cls , markup , is_html = False , search_entire_document = False ) : if search_entire_document : xml_endpos = html_endpos = len ( markup ) else : xml_endpos = 1024 html_endpos = max ( 2048 , int ( len ( markup ) * 0.05 ) ) declared_encoding = None declared_encoding_match = xml_encoding_re . search ( markup , endpos = xml_endpos ) if not declared_encoding_match and is_html : declared_encoding_match = html_meta_re . search ( markup , endpos = html_endpos ) if declared_encoding_match is not None : declared_encoding = declared_encoding_match . groups ( ) [ 0 ] . decode ( 'ascii' ) if declared_encoding : return declared_encoding . lower ( ) return None