"""A parser for XML, using the derived class as static DTD.""" # Author: Sjoerd Mullender. import reimport string import warningswarnings.warn("The xmllib module is obsolete.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 stringillegal = re.compile('[^\t\r\n -\176\240-\377]') # illegal chars in contentinteresting = 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')Lines 1–500 of 929. 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"""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')