Added 1.5 xmllib to Shared.DC.xml

lib/python/Shared/DC/xml/xmllib.py

+# A parser for XML, using the derived class as static DTD.
+# Author: Sjoerd Mullender.
+
+import re
+import string
+
+
+version = '0.1'
+
+# Regular expressions used for parsing
+
+_S = '[ \t\r\n]+'
+_opS = '[ \t\r\n]*'
+_Name = '[a-zA-Z_:][-a-zA-Z0-9._:]*'
+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')
+
+starttagopen = re.compile('<' + _Name)
+endtagopen = re.compile('</')
+starttagend = re.compile(_opS + '(?P<slash>/?)>')
+endbracket = re.compile(_opS + '>')
+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>\'[^\']*\'|"[^"]*")'
+_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>\'[^\']*\'|"[^"]*")'+
+                     '(?:'+_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('--')
+attrfind = re.compile(
+    _S + '(?P<name>' + _Name + ')'
+    '(' + _opS + '=' + _opS +
+    '(?P<value>\'[^\']*\'|"[^"]*"|[-a-zA-Z0-9.:+*%?!()_#=~]+))')
+attrtrans = string.maketrans(' \r\n\t', '    ')
+
+
+# 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 arbutrary chunks).  Entity references are
+# passed by calling self.handle_entityref() with the entity reference
+# as argument.
+
+class XMLParser:
+
+    # Interface -- initialize and reset this instance
+    def __init__(self, verbose=0):
+        self.verbose = verbose
+        self.reset()
+
+    # 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
+
+    # 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)
+
+    # Interface -- translate references
+    def translate_references(self, data, all = 1):
+        i = 0
+        while 1:
+            res = amp.search(data, i)
+            if res is None:
+                return data
+            res = ref.match(data, res.start(0))
+            if res is None:
+                self.syntax_error("bogus `&'")
+                i =i+1
+                continue
+            i = res.end(0)
+            if data[i - 1] != ';':
+                self.syntax_error("`;' missing after entity/char reference")
+                i = i-1
+            str = res.group(1)
+            pre = data[:res.start(0)]
+            post = data[i:]
+            if str[0] == '#':
+                if str[1] == 'x':
+                    str = chr(string.atoi(str[2:], 16))
+                else:
+                    str = chr(string.atoi(str[1:]))
+                data = pre + str + post
+                i = res.start(0)+len(str)
+            elif all:
+                if self.entitydefs.has_key(str):
+                    data = pre + self.entitydefs[str] + post
+                    i = res.start(0)    # rescan substituted text
+                else:
+                    self.syntax_error('reference to unknown entity')
+                    # can't do it, so keep the entity ref in
+                    data = pre + '&' + str + ';' + post
+                    i = res.start(0) + len(str) + 2
+            else:
+                # just translating character references
+                pass                    # i is already postioned correctly
+
+    # 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 + string.count(data, '\n')
+                i = n
+                break
+            res = interesting.search(rawdata, i)
+            if res:
+                    j = res.start(0)
+            else:
+                    j = n
+            if i < j:
+                if self.__at_start:
+                    self.syntax_error('illegal data at start of file')
+                self.__at_start = 0
+                data = rawdata[i:j]
+                if not self.stack and not space.match(data):
+                    self.syntax_error('data not in content')
+                if illegal.search(data):
+                    self.syntax_error('illegal character in content')
+                self.handle_data(data)
+                self.lineno = self.lineno + string.count(data, '\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 + string.count(data, '\n')
+                        i = i+1
+                        continue
+                    k = self.parse_starttag(i)
+                    if k < 0: break
+                    self.__seen_starttag = 1
+                    self.lineno = self.lineno + string.count(rawdata[i:k], '\n')
+                    i = k
+                    continue
+                if endtagopen.match(rawdata, i):
+                    k = self.parse_endtag(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + string.count(rawdata[i:k], '\n')
+                    i =  k
+                    self.literal = 0
+                    continue
+                if commentopen.match(rawdata, i):
+                    if self.literal:
+                        data = rawdata[i]
+                        self.handle_data(data)
+                        self.lineno = self.lineno + string.count(data, '\n')
+                        i = i+1
+                        continue
+                    k = self.parse_comment(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + string.count(rawdata[i:k], '\n')
+                    i = k
+                    continue
+                if cdataopen.match(rawdata, i):
+                    k = self.parse_cdata(i)
+                    if k < 0: break
+                    self.lineno = self.lineno + string.count(rawdata[i:i], '\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 RuntimeError, '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 + string.count(rawdata[i:k], '\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 + string.count(data, '\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')
+                    self.lineno = self.lineno + string.count(rawdata[i:k], '\n')
+                    i = k
+                    continue
+            elif rawdata[i] == '&':
+                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 + string.count(res.group(0), '\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.entitydefs.has_key(name):
+                        self.rawdata = rawdata = rawdata[:res.start(0)] + self.entitydefs[name] + rawdata[i:]
+                        n = len(rawdata)
+                        i = res.start(0)
+                    else:
+                        self.syntax_error('reference to unknown entity')
+                        self.unknown_entityref(name)
+                    self.lineno = self.lineno + string.count(res.group(0), '\n')
+                    continue
+            elif rawdata[i] == ']':
+                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 RuntimeError, '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 illegal.search(data):
+                self.syntax_error('illegal character in content')
+            self.handle_data(data)
+            self.lineno = self.lineno + string.count(data, '\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])
+
+    # Internal -- parse comment, return length or -1 if not terminated
+    def parse_comment(self, i):
+        rawdata = self.rawdata
+        if rawdata[i:i+4] <> '<!--':
+            raise RuntimeError, 'unexpected call to handle_comment'
+        res = commentclose.search(rawdata, i+4)
+        if not res:
+            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 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')
+        pubid, syslit = res.group('pubid', 'syslit')
+        if pubid is not None:
+            pubid = pubid[1:-1]         # remove quotes
+            pubid = string.join(string.split(pubid)) # 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 not res:
+                        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 = endbracket.search(rawdata, k)
+        if not res:
+            return -1
+        if res.start(0) != k:
+            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 RuntimeError, 'unexpected call to parse_cdata'
+        res = cdataclose.search(rawdata, i+9)
+        if not res:
+            return -1
+        if 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_attributes = {'version': '1.0', 'standalone': 'no', 'encoding': None}
+    # Internal -- handle a processing instruction tag
+    def parse_proc(self, i):
+        rawdata = self.rawdata
+        end = procclose.search(rawdata, i)
+        if not end:
+            return -1
+        j = end.start(0)
+        if illegal.search(rawdata, i+2, j):
+            self.syntax_error('illegal character in processing instruction')
+        res = tagfind.match(rawdata, i+2)
+        if not res:
+            raise RuntimeError, 'unexpected call to parse_proc'
+        k = res.end(0)
+        name = res.group(0)
+        if string.find(string.lower(name), 'xml') >= 0:
+            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, k, j, attributes = None):
+        rawdata = self.rawdata
+        # Now parse the data between k and j into a tag and attrs
+        attrdict = {}
+        try:
+            # convert attributes list to dictionary
+            d = {}
+            for a in attributes:
+                d[a] = None
+            attributes = d
+        except TypeError:
+            pass
+        while k < j:
+            res = attrfind.match(rawdata, k)
+            if not res: break
+            attrname, attrvalue = res.group('name', 'value')
+            if attrvalue is None:
+                self.syntax_error('no attribute value specified')
+                attrvalue = attrname
+            elif attrvalue[:1] == "'" == attrvalue[-1:] or \
+                 attrvalue[:1] == '"' == attrvalue[-1:]:
+                attrvalue = attrvalue[1:-1]
+            else:
+                self.syntax_error('attribute value not quoted')
+            if attributes is not None and not attributes.has_key(attrname):
+                self.syntax_error('unknown attribute %s of element %s' %
+                                  (attrname, tag))
+            if attrdict.has_key(attrname):
+                self.syntax_error('attribute specified twice')
+            attrvalue = string.translate(attrvalue, attrtrans)
+            attrdict[attrname] = self.translate_references(attrvalue)
+            k = res.end(0)
+        if attributes is not None:
+            # fill in with default attributes
+            for key, val in attributes.items():
+                if val is not None and not attrdict.has_key(key):
+                    attrdict[key] = val
+        return attrdict, k
+
+    # 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 = endbracket.search(rawdata, i+1)
+        if not end:
+            return -1
+        j = end.start(0)
+        res = tagfind.match(rawdata, i+1)
+        if not res:
+            raise RuntimeError, 'unexpected call to parse_starttag'
+        k = res.end(0)
+        tag = res.group(0)
+        if not self.__seen_starttag and self.__seen_doctype:
+            if tag != 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')
+        if hasattr(self, tag + '_attributes'):
+            attributes = getattr(self, tag + '_attributes')
+        else:
+            attributes = None
+        attrdict, k = self.parse_attributes(tag, k, j, attributes)
+        res = starttagend.match(rawdata, k)
+        if not res:
+            self.syntax_error('garbage in start tag')
+        self.finish_starttag(tag, attrdict)
+        if res and res.group('slash') == '/':
+            self.finish_endtag(tag)
+        return end.end(0)
+
+    # Internal -- parse endtag
+    def parse_endtag(self, i):
+        rawdata = self.rawdata
+        end = endbracket.search(rawdata, i+1)
+        if not end:
+            return -1
+        res = tagfind.match(rawdata, i+2)
+        if not res:
+            self.syntax_error('no name specified in end tag')
+            tag = ''
+            k = i+2
+        else:
+            tag = res.group(0)
+            k = res.end(0)
+        if k != end.start(0):
+            self.syntax_error('garbage in end tag')
+        self.finish_endtag(tag)
+        return end.end(0)
+
+    # Internal -- finish processing of start tag
+    # Return -1 for unknown tag, 1 for balanced tag
+    def finish_starttag(self, tag, attrs):
+        self.stack.append(tag)
+        methodname = 'start_' + tag
+        if hasattr(self, methodname):
+            method = getattr(self, methodname)
+            self.handle_starttag(tag, method, attrs)
+            return 1
+        else:
+            self.unknown_starttag(tag, attrs)
+            return -1
+
+    # Internal -- finish processing of end tag
+    def finish_endtag(self, tag):
+        methodname = 'end_' + tag
+        if not tag:
+            self.syntax_error('name-less end tag')
+            found = len(self.stack) - 1
+            if found < 0:
+                self.unknown_endtag(tag)
+                return
+        else:
+            if tag not in self.stack:
+                self.syntax_error('unopened end tag')
+                if hasattr(self, methodname):
+                    method = getattr(self, methodname)
+                    self.handle_endtag(tag, method)
+                else:
+                    self.unknown_endtag(tag)
+                return
+            found = len(self.stack)
+            for i in range(found):
+                if self.stack[i] == tag:
+                    found = i
+        while len(self.stack) > found:
+            if found < len(self.stack) - 1:
+                self.syntax_error('missing close tag for %s' % self.stack[-1])
+            tag = self.stack[-1]
+            if hasattr(self, methodname):
+                method = getattr(self, methodname)
+                self.handle_endtag(tag, method)
+            else:
+                self.unknown_endtag(tag)
+            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 = string.atoi(name[1:], 16)
+            else:
+                n = string.atoi(name)
+        except string.atoi_error:
+            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 entity reference, no need to override
+    def handle_entityref(self, name):
+        table = self.entitydefs
+        if table.has_key(name):
+            self.handle_data(table[name])
+        else:
+            self.unknown_entityref(name)
+            return
+
+    # 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 RuntimeError, '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, ref): pass
+
+
+class TestXMLParser(XMLParser):
+
+    def __init__(self, verbose=0):
+        self.testdata = ""
+        XMLParser.__init__(self, verbose)
+
+    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, `data`
+
+    def handle_entity(self, name, strval, pubid, syslit, ndata):
+        self.flush()
+        print 'ENTITY:',`data`
+
+    def handle_data(self, data):
+        self.testdata = self.testdata + data
+        if len(`self.testdata`) >= 70:
+            self.flush()
+
+    def flush(self):
+        data = self.testdata
+        if data:
+            self.testdata = ""
+            print 'data:', `data`
+
+    def handle_cdata(self, data):
+        self.flush()
+        print 'cdata:', `data`
+
+    def handle_proc(self, name, data):
+        self.flush()
+        print 'processing:',name,`data`
+
+    def handle_comment(self, data):
+        self.flush()
+        r = `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
+
+    if not args:
+        args = sys.argv[1:]
+
+    if args and args[0] == '-s':
+        args = args[1:]
+        klass = XMLParser
+    else:
+        klass = TestXMLParser
+
+    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()
+    try:
+        for c in data:
+            x.feed(c)
+        x.close()
+    except RuntimeError, msg:
+        print msg
+        sys.exit(1)
+
+
+if __name__ == '__main__':
+    test()