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[Jython-checkins] SF.net SVN: jython: [3488] branches/Release_2_2maint/jython/Lib/xmllib.py
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From: <cg...@us...> - 2007-09-21 08:15:53
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Revision: 3488
http://jython.svn.sourceforge.net/jython/?rev=3488&view=rev
Author: cgroves
Date: 2007-09-21 01:15:36 -0700 (Fri, 21 Sep 2007)
Log Message:
-----------
Copied from http://svn.python.org/projects/python/branches/release22-maint/Lib@58224 to patch on top of
Added Paths:
-----------
branches/Release_2_2maint/jython/Lib/xmllib.py
Added: branches/Release_2_2maint/jython/Lib/xmllib.py
===================================================================
--- branches/Release_2_2maint/jython/Lib/xmllib.py (rev 0)
+++ branches/Release_2_2maint/jython/Lib/xmllib.py 2007-09-21 08:15:36 UTC (rev 3488)
@@ -0,0 +1,929 @@
+"""A parser for XML, using the derived class as static DTD."""
+
+# Author: Sjoerd Mullender.
+
+import re
+import string
+
+
+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 kw.has_key('accept_unquoted_attributes'):
+ self.__accept_unquoted_attributes = kw['accept_unquoted_attributes']
+ if kw.has_key('accept_missing_endtag_name'):
+ self.__accept_missing_endtag_name = kw['accept_missing_endtag_name']
+ if kw.has_key('map_case'):
+ self.__map_case = kw['map_case']
+ if kw.has_key('accept_utf8'):
+ self.__accept_utf8 = kw['accept_utf8']
+ if kw.has_key('translate_attribute_references'):
+ 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 self.entitydefs.has_key(str):
+ 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 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.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 self.__xml_namespace_attributes.has_key(attrname):
+ self.syntax_error("unknown attribute `%s' in xml:namespace tag" % attrname)
+ if not attrdict.has_key('ns') or not attrdict.has_key('prefix'):
+ 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 self.__namespaces.has_key(prefix):
+ 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 attrdict.has_key(attrname):
+ 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 d.has_key(prefix):
+ 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 None:
+ aprefix = ''
+ ans = None
+ for t, d, nst in self.stack:
+ if d.has_key(aprefix):
+ ans = d[aprefix]
+ if ans is None and aprefix != '':
+ ans = self.__namespaces.get(aprefix)
+ if ans is not None:
+ key = ans + ' ' + key
+ elif aprefix != '':
+ key = aprefix + ':' + key
+ elif ns is not None:
+ key = ns + ' ' + 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 attributes.has_key(key):
+ 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 attrdict.has_key(key):
+ 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': '<', # must use charref
+ 'gt': '>',
+ 'amp': '&', # must use charref
+ 'quot': '"',
+ 'apos': ''',
+ }
+
+ # 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 = ""
+ apply(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, `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, 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()
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