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Diffstat (limited to 'doc/tools/sgmlconv/esistools.py')
| -rw-r--r-- | doc/tools/sgmlconv/esistools.py | 309 |
1 files changed, 0 insertions, 309 deletions
diff --git a/doc/tools/sgmlconv/esistools.py b/doc/tools/sgmlconv/esistools.py deleted file mode 100644 index 893af76..0000000 --- a/doc/tools/sgmlconv/esistools.py +++ /dev/null @@ -1,309 +0,0 @@ -"""Miscellaneous utility functions useful for dealing with ESIS streams.""" - -import re -import string - -import xml.dom.pulldom - -import xml.sax -import xml.sax.handler -import xml.sax.xmlreader - - -_data_match = re.compile(r"[^\\][^\\]*").match - -def decode(s): - r = '' - while s: - m = _data_match(s) - if m: - r = r + m.group() - s = s[m.end():] - elif s[1] == "\\": - r = r + "\\" - s = s[2:] - elif s[1] == "n": - r = r + "\n" - s = s[2:] - elif s[1] == "%": - s = s[2:] - n, s = s.split(";", 1) - r = r + unichr(int(n)) - else: - raise ValueError, "can't handle " + `s` - return r - - -_charmap = {} -for c in map(chr, range(256)): - _charmap[c] = c -_charmap["\n"] = r"\n" -_charmap["\\"] = r"\\" -del c - -_null_join = ''.join -def encode(s): - return _null_join(map(_charmap.get, s)) - - -class ESISReader(xml.sax.xmlreader.XMLReader): - """SAX Reader which reads from an ESIS stream. - - No verification of the document structure is performed by the - reader; a general verifier could be used as the target - ContentHandler instance. - - """ - _decl_handler = None - _lexical_handler = None - - _public_id = None - _system_id = None - - _buffer = "" - _is_empty = 0 - _lineno = 0 - _started = 0 - - def __init__(self, contentHandler=None, errorHandler=None): - xml.sax.xmlreader.XMLReader.__init__(self) - self._attrs = {} - self._attributes = Attributes(self._attrs) - self._locator = Locator() - self._empties = {} - if contentHandler: - self.setContentHandler(contentHandler) - if errorHandler: - self.setErrorHandler(errorHandler) - - def get_empties(self): - return self._empties.keys() - - # - # XMLReader interface - # - - def parse(self, source): - raise RuntimeError - self._locator._public_id = source.getPublicId() - self._locator._system_id = source.getSystemId() - fp = source.getByteStream() - handler = self.getContentHandler() - if handler: - handler.startDocument() - lineno = 0 - while 1: - token, data = self._get_token(fp) - if token is None: - break - lineno = lineno + 1 - self._locator._lineno = lineno - self._handle_token(token, data) - handler = self.getContentHandler() - if handler: - handler.startDocument() - - def feed(self, data): - if not self._started: - handler = self.getContentHandler() - if handler: - handler.startDocument() - self._started = 1 - data = self._buffer + data - self._buffer = None - lines = data.split("\n") - if lines: - for line in lines[:-1]: - self._lineno = self._lineno + 1 - self._locator._lineno = self._lineno - if not line: - e = xml.sax.SAXParseException( - "ESIS input line contains no token type mark", - None, self._locator) - self.getErrorHandler().error(e) - else: - self._handle_token(line[0], line[1:]) - self._buffer = lines[-1] - else: - self._buffer = "" - - def close(self): - handler = self.getContentHandler() - if handler: - handler.endDocument() - self._buffer = "" - - def _get_token(self, fp): - try: - line = fp.readline() - except IOError, e: - e = SAXException("I/O error reading input stream", e) - self.getErrorHandler().fatalError(e) - return - if not line: - return None, None - if line[-1] == "\n": - line = line[:-1] - if not line: - e = xml.sax.SAXParseException( - "ESIS input line contains no token type mark", - None, self._locator) - self.getErrorHandler().error(e) - return - return line[0], line[1:] - - def _handle_token(self, token, data): - handler = self.getContentHandler() - if token == '-': - if data and handler: - handler.characters(decode(data)) - elif token == ')': - if handler: - handler.endElement(decode(data)) - elif token == '(': - if self._is_empty: - self._empties[data] = 1 - if handler: - handler.startElement(data, self._attributes) - self._attrs.clear() - self._is_empty = 0 - elif token == 'A': - name, value = data.split(' ', 1) - if value != "IMPLIED": - type, value = value.split(' ', 1) - self._attrs[name] = (decode(value), type) - elif token == '&': - # entity reference in SAX? - pass - elif token == '?': - if handler: - if ' ' in data: - target, data = string.split(data, None, 1) - else: - target, data = data, "" - handler.processingInstruction(target, decode(data)) - elif token == 'N': - handler = self.getDTDHandler() - if handler: - handler.notationDecl(data, self._public_id, self._system_id) - self._public_id = None - self._system_id = None - elif token == 'p': - self._public_id = decode(data) - elif token == 's': - self._system_id = decode(data) - elif token == 'e': - self._is_empty = 1 - elif token == 'C': - pass - else: - e = SAXParseException("unknown ESIS token in event stream", - None, self._locator) - self.getErrorHandler().error(e) - - def setContentHandler(self, handler): - old = self.getContentHandler() - if old: - old.setDocumentLocator(None) - if handler: - handler.setDocumentLocator(self._locator) - xml.sax.xmlreader.XMLReader.setContentHandler(self, handler) - - def getProperty(self, property): - if property == xml.sax.handler.property_lexical_handler: - return self._lexical_handler - - elif property == xml.sax.handler.property_declaration_handler: - return self._decl_handler - - else: - raise xml.sax.SAXNotRecognizedException("unknown property %s" - % `property`) - - def setProperty(self, property, value): - if property == xml.sax.handler.property_lexical_handler: - if self._lexical_handler: - self._lexical_handler.setDocumentLocator(None) - if value: - value.setDocumentLocator(self._locator) - self._lexical_handler = value - - elif property == xml.sax.handler.property_declaration_handler: - if self._decl_handler: - self._decl_handler.setDocumentLocator(None) - if value: - value.setDocumentLocator(self._locator) - self._decl_handler = value - - else: - raise xml.sax.SAXNotRecognizedException() - - def getFeature(self, feature): - if feature == xml.sax.handler.feature_namespaces: - return 1 - else: - return xml.sax.xmlreader.XMLReader.getFeature(self, feature) - - def setFeature(self, feature, enabled): - if feature == xml.sax.handler.feature_namespaces: - pass - else: - xml.sax.xmlreader.XMLReader.setFeature(self, feature, enabled) - - -class Attributes(xml.sax.xmlreader.AttributesImpl): - # self._attrs has the form {name: (value, type)} - - def getType(self, name): - return self._attrs[name][1] - - def getValue(self, name): - return self._attrs[name][0] - - def getValueByQName(self, name): - return self._attrs[name][0] - - def __getitem__(self, name): - return self._attrs[name][0] - - def get(self, name, default=None): - if self._attrs.has_key(name): - return self._attrs[name][0] - return default - - def items(self): - L = [] - for name, (value, type) in self._attrs.items(): - L.append((name, value)) - return L - - def values(self): - L = [] - for value, type in self._attrs.values(): - L.append(value) - return L - - -class Locator(xml.sax.xmlreader.Locator): - _lineno = -1 - _public_id = None - _system_id = None - - def getLineNumber(self): - return self._lineno - - def getPublicId(self): - return self._public_id - - def getSystemId(self): - return self._system_id - - -def parse(stream_or_string, parser=None): - if type(stream_or_string) in [type(""), type(u"")]: - stream = open(stream_or_string) - else: - stream = stream_or_string - if not parser: - parser = ESISReader() - return xml.dom.pulldom.DOMEventStream(stream, parser, (2 ** 14) - 20) |