add hg and python

sys/lib/python/xmllib.py

@@ -0,0 +1,929 @@
+"""A parser for XML, using the derived class as static DTD."""
+
+# Author: Sjoerd Mullender.
+
+import re
+import string
+
+import warnings
+warnings.warn("The xmllib module is obsolete.  Use xml.sax instead.", DeprecationWarning)
+del warnings
+
+version = '0.3'
+
+class Error(RuntimeError):
+    pass
+
+# Regular expressions used for parsing
+
+_S = '[ \t\r\n]+'                       # white space
+_opS = '[ \t\r\n]*'                     # optional white space
+_Name = '[a-zA-Z_:][-a-zA-Z0-9._:]*'    # valid XML name
+_QStr = "(?:'[^']*'|\"[^\"]*\")"        # quoted XML string
+illegal = re.compile('[^\t\r\n -\176\240-\377]') # illegal chars in content
+interesting = re.compile('[]&<]')
+
+amp = re.compile('&')
+ref = re.compile('&(' + _Name + '|#[0-9]+|#x[0-9a-fA-F]+)[^-a-zA-Z0-9._:]')
+entityref = re.compile('&(?P<name>' + _Name + ')[^-a-zA-Z0-9._:]')
+charref = re.compile('&#(?P<char>[0-9]+[^0-9]|x[0-9a-fA-F]+[^0-9a-fA-F])')
+space = re.compile(_S + '$')
+newline = re.compile('\n')
+
+attrfind = re.compile(
+    _S + '(?P<name>' + _Name + ')'
+    '(' + _opS + '=' + _opS +
+    '(?P<value>'+_QStr+'|[-a-zA-Z0-9.:+*%?!\(\)_#=~]+))?')
+starttagopen = re.compile('<' + _Name)
+starttagend = re.compile(_opS + '(?P<slash>/?)>')
+starttagmatch = re.compile('<(?P<tagname>'+_Name+')'
+                      '(?P<attrs>(?:'+attrfind.pattern+')*)'+
+                      starttagend.pattern)
+endtagopen = re.compile('</')
+endbracket = re.compile(_opS + '>')
+endbracketfind = re.compile('(?:[^>\'"]|'+_QStr+')*>')
+tagfind = re.compile(_Name)
+cdataopen = re.compile(r'<!\[CDATA\[')
+cdataclose = re.compile(r'\]\]>')
+# this matches one of the following:
+# SYSTEM SystemLiteral
+# PUBLIC PubidLiteral SystemLiteral
+_SystemLiteral = '(?P<%s>'+_QStr+')'
+_PublicLiteral = '(?P<%s>"[-\'\(\)+,./:=?;!*#@$_%% \n\ra-zA-Z0-9]*"|' \
+                        "'[-\(\)+,./:=?;!*#@$_%% \n\ra-zA-Z0-9]*')"
+_ExternalId = '(?:SYSTEM|' \
+                 'PUBLIC'+_S+_PublicLiteral%'pubid'+ \
+              ')'+_S+_SystemLiteral%'syslit'
+doctype = re.compile('<!DOCTYPE'+_S+'(?P<name>'+_Name+')'
+                     '(?:'+_S+_ExternalId+')?'+_opS)
+xmldecl = re.compile('<\?xml'+_S+
+                     'version'+_opS+'='+_opS+'(?P<version>'+_QStr+')'+
+                     '(?:'+_S+'encoding'+_opS+'='+_opS+
+                        "(?P<encoding>'[A-Za-z][-A-Za-z0-9._]*'|"
+                        '"[A-Za-z][-A-Za-z0-9._]*"))?'
+                     '(?:'+_S+'standalone'+_opS+'='+_opS+
+                        '(?P<standalone>\'(?:yes|no)\'|"(?:yes|no)"))?'+
+                     _opS+'\?>')
+procopen = re.compile(r'<\?(?P<proc>' + _Name + ')' + _opS)
+procclose = re.compile(_opS + r'\?>')
+commentopen = re.compile('<!--')
+commentclose = re.compile('-->')
+doubledash = re.compile('--')
+attrtrans = string.maketrans(' \r\n\t', '    ')
+
+# definitions for XML namespaces
+_NCName = '[a-zA-Z_][-a-zA-Z0-9._]*'    # XML Name, minus the ":"
+ncname = re.compile(_NCName + '$')
+qname = re.compile('(?:(?P<prefix>' + _NCName + '):)?' # optional prefix
+                   '(?P<local>' + _NCName + ')$')
+
+xmlns = re.compile('xmlns(?::(?P<ncname>'+_NCName+'))?$')
+
+# XML parser base class -- find tags and call handler functions.
+# Usage: p = XMLParser(); p.feed(data); ...; p.close().
+# The dtd is defined by deriving a class which defines methods with
+# special names to handle tags: start_foo and end_foo to handle <foo>
+# and </foo>, respectively.  The data between tags is passed to the
+# parser by calling self.handle_data() with some data as argument (the
+# data may be split up in arbitrary chunks).
+
+class XMLParser:
+    attributes = {}                     # default, to be overridden
+    elements = {}                       # default, to be overridden
+
+    # parsing options, settable using keyword args in __init__
+    __accept_unquoted_attributes = 0
+    __accept_missing_endtag_name = 0
+    __map_case = 0
+    __accept_utf8 = 0
+    __translate_attribute_references = 1
+
+    # Interface -- initialize and reset this instance
+    def __init__(self, **kw):
+        self.__fixed = 0
+        if 'accept_unquoted_attributes' in kw:
+            self.__accept_unquoted_attributes = kw['accept_unquoted_attributes']
+        if 'accept_missing_endtag_name' in kw:
+            self.__accept_missing_endtag_name = kw['accept_missing_endtag_name']
+        if 'map_case' in kw:
+            self.__map_case = kw['map_case']
+        if 'accept_utf8' in kw:
+            self.__accept_utf8 = kw['accept_utf8']
+        if 'translate_attribute_references' in kw:
+            self.__translate_attribute_references = kw['translate_attribute_references']
+        self.reset()
+
+    def __fixelements(self):
+        self.__fixed = 1
+        self.elements = {}
+        self.__fixdict(self.__dict__)
+        self.__fixclass(self.__class__)
+
+    def __fixclass(self, kl):
+        self.__fixdict(kl.__dict__)
+        for k in kl.__bases__:
+            self.__fixclass(k)
+
+    def __fixdict(self, dict):
+        for key in dict.keys():
+            if key[:6] == 'start_':
+                tag = key[6:]
+                start, end = self.elements.get(tag, (None, None))
+                if start is None:
+                    self.elements[tag] = getattr(self, key), end
+            elif key[:4] == 'end_':
+                tag = key[4:]
+                start, end = self.elements.get(tag, (None, None))
+                if end is None:
+                    self.elements[tag] = start, getattr(self, key)
+
+    # Interface -- reset this instance.  Loses all unprocessed data
+    def reset(self):
+        self.rawdata = ''
+        self.stack = []
+        self.nomoretags = 0
+        self.literal = 0
+        self.lineno = 1
+        self.__at_start = 1
+        self.__seen_doctype = None
+        self.__seen_starttag = 0
+        self.__use_namespaces = 0
+        self.__namespaces = {'xml':None}   # xml is implicitly declared
+        # backward compatibility hack: if elements not overridden,
+        # fill it in ourselves
+        if self.elements is XMLParser.elements:
+            self.__fixelements()
+
+    # For derived classes only -- enter literal mode (CDATA) till EOF
+    def setnomoretags(self):
+        self.nomoretags = self.literal = 1
+
+    # For derived classes only -- enter literal mode (CDATA)
+    def setliteral(self, *args):
+        self.literal = 1
+
+    # Interface -- feed some data to the parser.  Call this as
+    # often as you want, with as little or as much text as you
+    # want (may include '\n').  (This just saves the text, all the
+    # processing is done by goahead().)
+    def feed(self, data):
+        self.rawdata = self.rawdata + data
+        self.goahead(0)
+
+    # Interface -- handle the remaining data
+    def close(self):
+        self.goahead(1)
+        if self.__fixed:
+            self.__fixed = 0
+            # remove self.elements so that we don't leak
+            del self.elements
+
+    # Interface -- translate references
+    def translate_references(self, data, all = 1):
+        if not self.__translate_attribute_references:
+            return data
+        i = 0
+        while 1:
+            res = amp.search(data, i)
+            if res is None:
+                return data
+            s = res.start(0)
+            res = ref.match(data, s)
+            if res is None:
+                self.syntax_error("bogus `&'")
+                i = s+1
+                continue
+            i = res.end(0)
+            str = res.group(1)
+            rescan = 0
+            if str[0] == '#':
+                if str[1] == 'x':
+                    str = chr(int(str[2:], 16))
+                else:
+                    str = chr(int(str[1:]))
+                if data[i - 1] != ';':
+                    self.syntax_error("`;' missing after char reference")
+                    i = i-1
+            elif all:
+                if str in self.entitydefs:
+                    str = self.entitydefs[str]
+                    rescan = 1
+                elif data[i - 1] != ';':
+                    self.syntax_error("bogus `&'")
+                    i = s + 1 # just past the &
+                    continue
+                else:
+                    self.syntax_error("reference to unknown entity `&%s;'" % str)
+                    str = '&' + str + ';'
+            elif data[i - 1] != ';':
+                self.syntax_error("bogus `&'")
+                i = s + 1 # just past the &
+                continue
+
+            # when we get here, str contains the translated text and i points
+            # to the end of the string that is to be replaced
+            data = data[:s] + str + data[i:]
+            if rescan:
+                i = s
+            else:
+                i = s + len(str)
+
+    # Interface - return a dictionary of all namespaces currently valid
+    def getnamespace(self):
+        nsdict = {}
+        for t, d, nst in self.stack:
+            nsdict.update(d)
+        return nsdict
+
+    # Internal -- handle data as far as reasonable.  May leave state
+    # and data to be processed by a subsequent call.  If 'end' is
+    # true, force handling all data as if followed by EOF marker.
+    def goahead(self, end):
+        rawdata = self.rawdata
+        i = 0
+        n = len(rawdata)
+        while i < n:
+            if i > 0:
+                self.__at_start = 0
+            if self.nomoretags:
+                data = rawdata[i:n]
+                self.handle_data(data)
+                self.lineno = self.lineno + data.count('\n')
+                i = n
+                break
+            res = interesting.search(rawdata, i)
+            if res:
+                j = res.start(0)
+            else:
+                j = n
+            if i < j:
+                data = rawdata[i:j]
+                if self.__at_start and space.match(data) is None:
+                    self.syntax_error('illegal data at start of file')
+                self.__at_start = 0
+                if not self.stack and space.match(data) is None:
+                    self.syntax_error('data not in content')
+                if not self.__accept_utf8 and illegal.search(data):
+                    self.syntax_error('illegal character in content')
+                self.handle_data(data)
+                self.lineno = self.lineno + data.count('\n')
+            i = j
+            if i == n: break
+            if rawdata[i] == '<':
+                if starttagopen.match(rawdata, i):
+                    if self.literal:
+                        data = rawdata[i]
+                        self.handle_data(data)
+                        self.lineno = self.lineno + data.count('\n')
+                        i = i+1
+                        continue
+                    k = self.parse_starttag(i)
+                    if k < 0: break
+                    self.__seen_starttag = 1
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i = k
+                    continue
+                if endtagopen.match(rawdata, i):
+                    k = self.parse_endtag(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i =  k
+                    continue
+                if commentopen.match(rawdata, i):
+                    if self.literal:
+                        data = rawdata[i]
+                        self.handle_data(data)
+                        self.lineno = self.lineno + data.count('\n')
+                        i = i+1
+                        continue
+                    k = self.parse_comment(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i = k
+                    continue
+                if cdataopen.match(rawdata, i):
+                    k = self.parse_cdata(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i = k
+                    continue
+                res = xmldecl.match(rawdata, i)
+                if res:
+                    if not self.__at_start:
+                        self.syntax_error("<?xml?> declaration not at start of document")
+                    version, encoding, standalone = res.group('version',
+                                                              'encoding',
+                                                              'standalone')
+                    if version[1:-1] != '1.0':
+                        raise Error('only XML version 1.0 supported')
+                    if encoding: encoding = encoding[1:-1]
+                    if standalone: standalone = standalone[1:-1]
+                    self.handle_xml(encoding, standalone)
+                    i = res.end(0)
+                    continue
+                res = procopen.match(rawdata, i)
+                if res:
+                    k = self.parse_proc(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i = k
+                    continue
+                res = doctype.match(rawdata, i)
+                if res:
+                    if self.literal:
+                        data = rawdata[i]
+                        self.handle_data(data)
+                        self.lineno = self.lineno + data.count('\n')
+                        i = i+1
+                        continue
+                    if self.__seen_doctype:
+                        self.syntax_error('multiple DOCTYPE elements')
+                    if self.__seen_starttag:
+                        self.syntax_error('DOCTYPE not at beginning of document')
+                    k = self.parse_doctype(res)
+                    if k < 0: break
+                    self.__seen_doctype = res.group('name')
+                    if self.__map_case:
+                        self.__seen_doctype = self.__seen_doctype.lower()
+                    self.lineno = self.lineno + rawdata[i:k].count('\n')
+                    i = k
+                    continue
+            elif rawdata[i] == '&':
+                if self.literal:
+                    data = rawdata[i]
+                    self.handle_data(data)
+                    i = i+1
+                    continue
+                res = charref.match(rawdata, i)
+                if res is not None:
+                    i = res.end(0)
+                    if rawdata[i-1] != ';':
+                        self.syntax_error("`;' missing in charref")
+                        i = i-1
+                    if not self.stack:
+                        self.syntax_error('data not in content')
+                    self.handle_charref(res.group('char')[:-1])
+                    self.lineno = self.lineno + res.group(0).count('\n')
+                    continue
+                res = entityref.match(rawdata, i)
+                if res is not None:
+                    i = res.end(0)
+                    if rawdata[i-1] != ';':
+                        self.syntax_error("`;' missing in entityref")
+                        i = i-1
+                    name = res.group('name')
+                    if self.__map_case:
+                        name = name.lower()
+                    if name in self.entitydefs:
+                        self.rawdata = rawdata = rawdata[:res.start(0)] + self.entitydefs[name] + rawdata[i:]
+                        n = len(rawdata)
+                        i = res.start(0)
+                    else:
+                        self.unknown_entityref(name)
+                    self.lineno = self.lineno + res.group(0).count('\n')
+                    continue
+            elif rawdata[i] == ']':
+                if self.literal:
+                    data = rawdata[i]
+                    self.handle_data(data)
+                    i = i+1
+                    continue
+                if n-i < 3:
+                    break
+                if cdataclose.match(rawdata, i):
+                    self.syntax_error("bogus `]]>'")
+                self.handle_data(rawdata[i])
+                i = i+1
+                continue
+            else:
+                raise Error('neither < nor & ??')
+            # We get here only if incomplete matches but
+            # nothing else
+            break
+        # end while
+        if i > 0:
+            self.__at_start = 0
+        if end and i < n:
+            data = rawdata[i]
+            self.syntax_error("bogus `%s'" % data)
+            if not self.__accept_utf8 and illegal.search(data):
+                self.syntax_error('illegal character in content')
+            self.handle_data(data)
+            self.lineno = self.lineno + data.count('\n')
+            self.rawdata = rawdata[i+1:]
+            return self.goahead(end)
+        self.rawdata = rawdata[i:]
+        if end:
+            if not self.__seen_starttag:
+                self.syntax_error('no elements in file')
+            if self.stack:
+                self.syntax_error('missing end tags')
+                while self.stack:
+                    self.finish_endtag(self.stack[-1][0])
+
+    # Internal -- parse comment, return length or -1 if not terminated
+    def parse_comment(self, i):
+        rawdata = self.rawdata
+        if rawdata[i:i+4] != '<!--':
+            raise Error('unexpected call to handle_comment')
+        res = commentclose.search(rawdata, i+4)
+        if res is None:
+            return -1
+        if doubledash.search(rawdata, i+4, res.start(0)):
+            self.syntax_error("`--' inside comment")
+        if rawdata[res.start(0)-1] == '-':
+            self.syntax_error('comment cannot end in three dashes')
+        if not self.__accept_utf8 and \
+           illegal.search(rawdata, i+4, res.start(0)):
+            self.syntax_error('illegal character in comment')
+        self.handle_comment(rawdata[i+4: res.start(0)])
+        return res.end(0)
+
+    # Internal -- handle DOCTYPE tag, return length or -1 if not terminated
+    def parse_doctype(self, res):
+        rawdata = self.rawdata
+        n = len(rawdata)
+        name = res.group('name')
+        if self.__map_case:
+            name = name.lower()
+        pubid, syslit = res.group('pubid', 'syslit')
+        if pubid is not None:
+            pubid = pubid[1:-1]         # remove quotes
+            pubid = ' '.join(pubid.split()) # normalize
+        if syslit is not None: syslit = syslit[1:-1] # remove quotes
+        j = k = res.end(0)
+        if k >= n:
+            return -1
+        if rawdata[k] == '[':
+            level = 0
+            k = k+1
+            dq = sq = 0
+            while k < n:
+                c = rawdata[k]
+                if not sq and c == '"':
+                    dq = not dq
+                elif not dq and c == "'":
+                    sq = not sq
+                elif sq or dq:
+                    pass
+                elif level <= 0 and c == ']':
+                    res = endbracket.match(rawdata, k+1)
+                    if res is None:
+                        return -1
+                    self.handle_doctype(name, pubid, syslit, rawdata[j+1:k])
+                    return res.end(0)
+                elif c == '<':
+                    level = level + 1
+                elif c == '>':
+                    level = level - 1
+                    if level < 0:
+                        self.syntax_error("bogus `>' in DOCTYPE")
+                k = k+1
+        res = endbracketfind.match(rawdata, k)
+        if res is None:
+            return -1
+        if endbracket.match(rawdata, k) is None:
+            self.syntax_error('garbage in DOCTYPE')
+        self.handle_doctype(name, pubid, syslit, None)
+        return res.end(0)
+
+    # Internal -- handle CDATA tag, return length or -1 if not terminated
+    def parse_cdata(self, i):
+        rawdata = self.rawdata
+        if rawdata[i:i+9] != '<![CDATA[':
+            raise Error('unexpected call to parse_cdata')
+        res = cdataclose.search(rawdata, i+9)
+        if res is None:
+            return -1
+        if not self.__accept_utf8 and \
+           illegal.search(rawdata, i+9, res.start(0)):
+            self.syntax_error('illegal character in CDATA')
+        if not self.stack:
+            self.syntax_error('CDATA not in content')
+        self.handle_cdata(rawdata[i+9:res.start(0)])
+        return res.end(0)
+
+    __xml_namespace_attributes = {'ns':None, 'src':None, 'prefix':None}
+    # Internal -- handle a processing instruction tag
+    def parse_proc(self, i):
+        rawdata = self.rawdata
+        end = procclose.search(rawdata, i)
+        if end is None:
+            return -1
+        j = end.start(0)
+        if not self.__accept_utf8 and illegal.search(rawdata, i+2, j):
+            self.syntax_error('illegal character in processing instruction')
+        res = tagfind.match(rawdata, i+2)
+        if res is None:
+            raise Error('unexpected call to parse_proc')
+        k = res.end(0)
+        name = res.group(0)
+        if self.__map_case:
+            name = name.lower()
+        if name == 'xml:namespace':
+            self.syntax_error('old-fashioned namespace declaration')
+            self.__use_namespaces = -1
+            # namespace declaration
+            # this must come after the <?xml?> declaration (if any)
+            # and before the <!DOCTYPE> (if any).
+            if self.__seen_doctype or self.__seen_starttag:
+                self.syntax_error('xml:namespace declaration too late in document')
+            attrdict, namespace, k = self.parse_attributes(name, k, j)
+            if namespace:
+                self.syntax_error('namespace declaration inside namespace declaration')
+            for attrname in attrdict.keys():
+                if not attrname in self.__xml_namespace_attributes:
+                    self.syntax_error("unknown attribute `%s' in xml:namespace tag" % attrname)
+            if not 'ns' in attrdict or not 'prefix' in attrdict:
+                self.syntax_error('xml:namespace without required attributes')
+            prefix = attrdict.get('prefix')
+            if ncname.match(prefix) is None:
+                self.syntax_error('xml:namespace illegal prefix value')
+                return end.end(0)
+            if prefix in self.__namespaces:
+                self.syntax_error('xml:namespace prefix not unique')
+            self.__namespaces[prefix] = attrdict['ns']
+        else:
+            if name.lower() == 'xml':
+                self.syntax_error('illegal processing instruction target name')
+            self.handle_proc(name, rawdata[k:j])
+        return end.end(0)
+
+    # Internal -- parse attributes between i and j
+    def parse_attributes(self, tag, i, j):
+        rawdata = self.rawdata
+        attrdict = {}
+        namespace = {}
+        while i < j:
+            res = attrfind.match(rawdata, i)
+            if res is None:
+                break
+            attrname, attrvalue = res.group('name', 'value')
+            if self.__map_case:
+                attrname = attrname.lower()
+            i = res.end(0)
+            if attrvalue is None:
+                self.syntax_error("no value specified for attribute `%s'" % attrname)
+                attrvalue = attrname
+            elif attrvalue[:1] == "'" == attrvalue[-1:] or \
+                 attrvalue[:1] == '"' == attrvalue[-1:]:
+                attrvalue = attrvalue[1:-1]
+            elif not self.__accept_unquoted_attributes:
+                self.syntax_error("attribute `%s' value not quoted" % attrname)
+            res = xmlns.match(attrname)
+            if res is not None:
+                # namespace declaration
+                ncname = res.group('ncname')
+                namespace[ncname or ''] = attrvalue or None
+                if not self.__use_namespaces:
+                    self.__use_namespaces = len(self.stack)+1
+                continue
+            if '<' in attrvalue:
+                self.syntax_error("`<' illegal in attribute value")
+            if attrname in attrdict:
+                self.syntax_error("attribute `%s' specified twice" % attrname)
+            attrvalue = attrvalue.translate(attrtrans)
+            attrdict[attrname] = self.translate_references(attrvalue)
+        return attrdict, namespace, i
+
+    # Internal -- handle starttag, return length or -1 if not terminated
+    def parse_starttag(self, i):
+        rawdata = self.rawdata
+        # i points to start of tag
+        end = endbracketfind.match(rawdata, i+1)
+        if end is None:
+            return -1
+        tag = starttagmatch.match(rawdata, i)
+        if tag is None or tag.end(0) != end.end(0):
+            self.syntax_error('garbage in starttag')
+            return end.end(0)
+        nstag = tagname = tag.group('tagname')
+        if self.__map_case:
+            nstag = tagname = nstag.lower()
+        if not self.__seen_starttag and self.__seen_doctype and \
+           tagname != self.__seen_doctype:
+            self.syntax_error('starttag does not match DOCTYPE')
+        if self.__seen_starttag and not self.stack:
+            self.syntax_error('multiple elements on top level')
+        k, j = tag.span('attrs')
+        attrdict, nsdict, k = self.parse_attributes(tagname, k, j)
+        self.stack.append((tagname, nsdict, nstag))
+        if self.__use_namespaces:
+            res = qname.match(tagname)
+        else:
+            res = None
+        if res is not None:
+            prefix, nstag = res.group('prefix', 'local')
+            if prefix is None:
+                prefix = ''
+            ns = None
+            for t, d, nst in self.stack:
+                if prefix in d:
+                    ns = d[prefix]
+            if ns is None and prefix != '':
+                ns = self.__namespaces.get(prefix)
+            if ns is not None:
+                nstag = ns + ' ' + nstag
+            elif prefix != '':
+                nstag = prefix + ':' + nstag # undo split
+            self.stack[-1] = tagname, nsdict, nstag
+        # translate namespace of attributes
+        attrnamemap = {} # map from new name to old name (used for error reporting)
+        for key in attrdict.keys():
+            attrnamemap[key] = key
+        if self.__use_namespaces:
+            nattrdict = {}
+            for key, val in attrdict.items():
+                okey = key
+                res = qname.match(key)
+                if res is not None:
+                    aprefix, key = res.group('prefix', 'local')
+                    if self.__map_case:
+                        key = key.lower()
+                    if aprefix is not None:
+                        ans = None
+                        for t, d, nst in self.stack:
+                            if aprefix in d:
+                                ans = d[aprefix]
+                        if ans is None:
+                            ans = self.__namespaces.get(aprefix)
+                        if ans is not None:
+                            key = ans + ' ' + key
+                        else:
+                            key = aprefix + ':' + key
+                nattrdict[key] = val
+                attrnamemap[key] = okey
+            attrdict = nattrdict
+        attributes = self.attributes.get(nstag)
+        if attributes is not None:
+            for key in attrdict.keys():
+                if not key in attributes:
+                    self.syntax_error("unknown attribute `%s' in tag `%s'" % (attrnamemap[key], tagname))
+            for key, val in attributes.items():
+                if val is not None and not key in attrdict:
+                    attrdict[key] = val
+        method = self.elements.get(nstag, (None, None))[0]
+        self.finish_starttag(nstag, attrdict, method)
+        if tag.group('slash') == '/':
+            self.finish_endtag(tagname)
+        return tag.end(0)
+
+    # Internal -- parse endtag
+    def parse_endtag(self, i):
+        rawdata = self.rawdata
+        end = endbracketfind.match(rawdata, i+1)
+        if end is None:
+            return -1
+        res = tagfind.match(rawdata, i+2)
+        if res is None:
+            if self.literal:
+                self.handle_data(rawdata[i])
+                return i+1
+            if not self.__accept_missing_endtag_name:
+                self.syntax_error('no name specified in end tag')
+            tag = self.stack[-1][0]
+            k = i+2
+        else:
+            tag = res.group(0)
+            if self.__map_case:
+                tag = tag.lower()
+            if self.literal:
+                if not self.stack or tag != self.stack[-1][0]:
+                    self.handle_data(rawdata[i])
+                    return i+1
+            k = res.end(0)
+        if endbracket.match(rawdata, k) is None:
+            self.syntax_error('garbage in end tag')
+        self.finish_endtag(tag)
+        return end.end(0)
+
+    # Internal -- finish processing of start tag
+    def finish_starttag(self, tagname, attrdict, method):
+        if method is not None:
+            self.handle_starttag(tagname, method, attrdict)
+        else:
+            self.unknown_starttag(tagname, attrdict)
+
+    # Internal -- finish processing of end tag
+    def finish_endtag(self, tag):
+        self.literal = 0
+        if not tag:
+            self.syntax_error('name-less end tag')
+            found = len(self.stack) - 1
+            if found < 0:
+                self.unknown_endtag(tag)
+                return
+        else:
+            found = -1
+            for i in range(len(self.stack)):
+                if tag == self.stack[i][0]:
+                    found = i
+            if found == -1:
+                self.syntax_error('unopened end tag')
+                return
+        while len(self.stack) > found:
+            if found < len(self.stack) - 1:
+                self.syntax_error('missing close tag for %s' % self.stack[-1][2])
+            nstag = self.stack[-1][2]
+            method = self.elements.get(nstag, (None, None))[1]
+            if method is not None:
+                self.handle_endtag(nstag, method)
+            else:
+                self.unknown_endtag(nstag)
+            if self.__use_namespaces == len(self.stack):
+                self.__use_namespaces = 0
+            del self.stack[-1]
+
+    # Overridable -- handle xml processing instruction
+    def handle_xml(self, encoding, standalone):
+        pass
+
+    # Overridable -- handle DOCTYPE
+    def handle_doctype(self, tag, pubid, syslit, data):
+        pass
+
+    # Overridable -- handle start tag
+    def handle_starttag(self, tag, method, attrs):
+        method(attrs)
+
+    # Overridable -- handle end tag
+    def handle_endtag(self, tag, method):
+        method()
+
+    # Example -- handle character reference, no need to override
+    def handle_charref(self, name):
+        try:
+            if name[0] == 'x':
+                n = int(name[1:], 16)
+            else:
+                n = int(name)
+        except ValueError:
+            self.unknown_charref(name)
+            return
+        if not 0 <= n <= 255:
+            self.unknown_charref(name)
+            return
+        self.handle_data(chr(n))
+
+    # Definition of entities -- derived classes may override
+    entitydefs = {'lt': '&#60;',        # must use charref
+                  'gt': '&#62;',
+                  'amp': '&#38;',       # must use charref
+                  'quot': '&#34;',
+                  'apos': '&#39;',
+                  }
+
+    # Example -- handle data, should be overridden
+    def handle_data(self, data):
+        pass
+
+    # Example -- handle cdata, could be overridden
+    def handle_cdata(self, data):
+        pass
+
+    # Example -- handle comment, could be overridden
+    def handle_comment(self, data):
+        pass
+
+    # Example -- handle processing instructions, could be overridden
+    def handle_proc(self, name, data):
+        pass
+
+    # Example -- handle relatively harmless syntax errors, could be overridden
+    def syntax_error(self, message):
+        raise Error('Syntax error at line %d: %s' % (self.lineno, message))
+
+    # To be overridden -- handlers for unknown objects
+    def unknown_starttag(self, tag, attrs): pass
+    def unknown_endtag(self, tag): pass
+    def unknown_charref(self, ref): pass
+    def unknown_entityref(self, name):
+        self.syntax_error("reference to unknown entity `&%s;'" % name)
+
+
+class TestXMLParser(XMLParser):
+
+    def __init__(self, **kw):
+        self.testdata = ""
+        XMLParser.__init__(self, **kw)
+
+    def handle_xml(self, encoding, standalone):
+        self.flush()
+        print 'xml: encoding =',encoding,'standalone =',standalone
+
+    def handle_doctype(self, tag, pubid, syslit, data):
+        self.flush()
+        print 'DOCTYPE:',tag, repr(data)
+
+    def handle_data(self, data):
+        self.testdata = self.testdata + data
+        if len(repr(self.testdata)) >= 70:
+            self.flush()
+
+    def flush(self):
+        data = self.testdata
+        if data:
+            self.testdata = ""
+            print 'data:', repr(data)
+
+    def handle_cdata(self, data):
+        self.flush()
+        print 'cdata:', repr(data)
+
+    def handle_proc(self, name, data):
+        self.flush()
+        print 'processing:',name,repr(data)
+
+    def handle_comment(self, data):
+        self.flush()
+        r = repr(data)
+        if len(r) > 68:
+            r = r[:32] + '...' + r[-32:]
+        print 'comment:', r
+
+    def syntax_error(self, message):
+        print 'error at line %d:' % self.lineno, message
+
+    def unknown_starttag(self, tag, attrs):
+        self.flush()
+        if not attrs:
+            print 'start tag: <' + tag + '>'
+        else:
+            print 'start tag: <' + tag,
+            for name, value in attrs.items():
+                print name + '=' + '"' + value + '"',
+            print '>'
+
+    def unknown_endtag(self, tag):
+        self.flush()
+        print 'end tag: </' + tag + '>'
+
+    def unknown_entityref(self, ref):
+        self.flush()
+        print '*** unknown entity ref: &' + ref + ';'
+
+    def unknown_charref(self, ref):
+        self.flush()
+        print '*** unknown char ref: &#' + ref + ';'
+
+    def close(self):
+        XMLParser.close(self)
+        self.flush()
+
+def test(args = None):
+    import sys, getopt
+    from time import time
+
+    if not args:
+        args = sys.argv[1:]
+
+    opts, args = getopt.getopt(args, 'st')
+    klass = TestXMLParser
+    do_time = 0
+    for o, a in opts:
+        if o == '-s':
+            klass = XMLParser
+        elif o == '-t':
+            do_time = 1
+
+    if args:
+        file = args[0]
+    else:
+        file = 'test.xml'
+
+    if file == '-':
+        f = sys.stdin
+    else:
+        try:
+            f = open(file, 'r')
+        except IOError, msg:
+            print file, ":", msg
+            sys.exit(1)
+
+    data = f.read()
+    if f is not sys.stdin:
+        f.close()
+
+    x = klass()
+    t0 = time()
+    try:
+        if do_time:
+            x.feed(data)
+            x.close()
+        else:
+            for c in data:
+                x.feed(c)
+            x.close()
+    except Error, msg:
+        t1 = time()
+        print msg
+        if do_time:
+            print 'total time: %g' % (t1-t0)
+        sys.exit(1)
+    t1 = time()
+    if do_time:
+        print 'total time: %g' % (t1-t0)
+
+
+if __name__ == '__main__':
+    test()