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Conform to the Python style guide.
This commit is contained in:
Fred Drake
parent
ddb486745b
commit
1f54902e05
2 changed files with 361 additions and 356 deletions
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@ -1,159 +1,157 @@
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import minidom
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import types
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import string
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import sys
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import xml.sax
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#todo: SAX2/namespace handling
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START_ELEMENT="START_ELEMENT"
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END_ELEMENT="END_ELEMENT"
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COMMENT="COMMENT"
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START_DOCUMENT="START_DOCUMENT"
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END_DOCUMENT="END_DOCUMENT"
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PROCESSING_INSTRUCTION="PROCESSING_INSTRUCTION"
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IGNORABLE_WHITESPACE="IGNORABLE_WHITESPACE"
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CHARACTERS="CHARACTERS"
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START_ELEMENT = "START_ELEMENT"
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END_ELEMENT = "END_ELEMENT"
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COMMENT = "COMMENT"
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START_DOCUMENT = "START_DOCUMENT"
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END_DOCUMENT = "END_DOCUMENT"
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PROCESSING_INSTRUCTION = "PROCESSING_INSTRUCTION"
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IGNORABLE_WHITESPACE = "IGNORABLE_WHITESPACE"
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CHARACTERS = "CHARACTERS"
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class PullDOM:
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def __init__( self ):
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self.firstEvent=[None,None]
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self.lastEvent=self.firstEvent
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def __init__(self):
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self.firstEvent = [None, None]
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self.lastEvent = self.firstEvent
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def setDocumentLocator( self, locator ): pass
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def setDocumentLocator(self, locator): pass
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def startElement( self, name, tagName , attrs ):
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if not hasattr( self, "curNode" ):
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def startElement(self, name, tagName, attrs):
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if not hasattr(self, "curNode"):
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# FIXME: hack!
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self.startDocument( )
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self.startDocument()
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node = self.document.createElement( tagName ) #FIXME namespaces!
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node = self.document.createElement(tagName) #FIXME namespaces!
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for attr in attrs.keys():
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node.setAttribute( attr, attrs[attr] )
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parent=self.curNode
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node.setAttribute(attr, attrs[attr])
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parent = self.curNode
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node.parentNode = parent
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if parent.childNodes:
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node.previousSibling=parent.childNodes[-1]
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node.previousSibling.nextSibling=node
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node.previousSibling = parent.childNodes[-1]
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node.previousSibling.nextSibling = node
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self.curNode = node
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# FIXME: do I have to screen namespace attributes
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self.lastEvent[1]=[(START_ELEMENT, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (START_ELEMENT, node) )
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self.lastEvent[1] = [(START_ELEMENT, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((START_ELEMENT, node))
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def endElement( self, name, tagName ):
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def endElement(self, name, tagName):
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node = self.curNode
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self.lastEvent[1]=[(END_ELEMENT, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (END_ELEMENT, node ))
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self.lastEvent[1] = [(END_ELEMENT, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((END_ELEMENT, node))
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self.curNode = node.parentNode
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def comment( self, s):
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node = self.document.createComment ( s )
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parent=self.curNode
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node.parentNode=parent
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def comment(self, s):
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node = self.document.createComment(s)
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parent = self.curNode
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node.parentNode = parent
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if parent.childNodes:
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node.previousSibling=parent.childNodes[-1]
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node.previousSibling.nextSibling=node
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self.lastEvent[1]=[(COMMENT, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (COMMENT, node ))
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node.previousSibling = parent.childNodes[-1]
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node.previousSibling.nextSibling = node
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self.lastEvent[1] = [(COMMENT, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((COMMENT, node))
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def processingInstruction( self, target, data ):
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node = self.document.createProcessingInstruction( target, data )
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#self.appendChild( node )
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def processingInstruction(self, target, data):
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node = self.document.createProcessingInstruction(target, data)
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#self.appendChild(node)
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parent=self.curNode
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node.parentNode=parent
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parent = self.curNode
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node.parentNode = parent
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if parent.childNodes:
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node.previousSibling=parent.childNodes[-1]
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node.previousSibling.nextSibling=node
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self.lastEvent[1]=[(PROCESSING_INSTRUCTION, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (PROCESSING_INSTRUCTION, node) )
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node.previousSibling = parent.childNodes[-1]
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node.previousSibling.nextSibling = node
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self.lastEvent[1] = [(PROCESSING_INSTRUCTION, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((PROCESSING_INSTRUCTION, node))
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def ignorableWhitespace( self, chars ):
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node = self.document.createTextNode( chars[start:start+length] )
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parent=self.curNode
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node.parentNode=parent
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def ignorableWhitespace(self, chars):
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node = self.document.createTextNode(chars[start:start + length])
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parent = self.curNode
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node.parentNode = parent
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if parent.childNodes:
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node.previousSibling=parent.childNodes[-1]
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node.previousSibling.nextSibling=node
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self.lastEvent[1]=[(IGNORABLE_WHITESPACE, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (IGNORABLE_WHITESPACE, node))
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node.previousSibling = parent.childNodes[-1]
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node.previousSibling.nextSibling = node
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self.lastEvent[1] = [(IGNORABLE_WHITESPACE, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((IGNORABLE_WHITESPACE, node))
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def characters( self, chars ):
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node = self.document.createTextNode( chars )
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node.parentNode=self.curNode
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self.lastEvent[1]=[(CHARACTERS, node), None ]
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self.lastEvent=self.lastEvent[1]
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def characters(self, chars):
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node = self.document.createTextNode(chars)
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node.parentNode = self.curNode
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self.lastEvent[1] = [(CHARACTERS, node), None]
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self.lastEvent = self.lastEvent[1]
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def startDocument( self ):
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def startDocument(self):
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node = self.curNode = self.document = minidom.Document()
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node.parentNode=None
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self.lastEvent[1]=[(START_DOCUMENT, node), None ]
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self.lastEvent=self.lastEvent[1]
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#self.events.append( (START_DOCUMENT, node) )
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def endDocument( self ):
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assert( not self.curNode.parentNode )
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for node in self.curNode.childNodes:
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if node.nodeType==node.ELEMENT_NODE:
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self.document.documentElement = node
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#if not self.document.documentElement:
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# raise Error, "No document element"
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node.parentNode = None
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self.lastEvent[1] = [(START_DOCUMENT, node), None]
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self.lastEvent = self.lastEvent[1]
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#self.events.append((START_DOCUMENT, node))
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self.lastEvent[1]=[(END_DOCUMENT, node), None ]
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#self.events.append( (END_DOCUMENT, self.curNode) )
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def endDocument(self):
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assert not self.curNode.parentNode
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for node in self.curNode.childNodes:
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if node.nodeType == node.ELEMENT_NODE:
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self.document.documentElement = node
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#if not self.document.documentElement:
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# raise Error, "No document element"
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self.lastEvent[1] = [(END_DOCUMENT, node), None]
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#self.events.append((END_DOCUMENT, self.curNode))
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class ErrorHandler:
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def warning( self, exception ):
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def warning(self, exception):
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print exception
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def error( self, exception ):
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def error(self, exception):
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raise exception
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def fatalError( self, exception ):
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def fatalError(self, exception):
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raise exception
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class DOMEventStream:
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def __init__( self, stream, parser, bufsize ):
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self.stream=stream
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self.parser=parser
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self.bufsize=bufsize
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def __init__(self, stream, parser, bufsize):
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self.stream = stream
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self.parser = parser
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self.bufsize = bufsize
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self.reset()
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def reset( self ):
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def reset(self):
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self.pulldom = PullDOM()
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self.parser.setContentHandler( self.pulldom )
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self.parser.setContentHandler(self.pulldom)
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def __getitem__( self, pos ):
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rc=self.getEvent()
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if rc: return rc
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def __getitem__(self, pos):
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rc = self.getEvent()
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if rc:
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return rc
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raise IndexError
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def expandNode( self, node ):
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event=self.getEvent()
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def expandNode(self, node):
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event = self.getEvent()
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while event:
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token,cur_node=event
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if cur_node is node: return
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if token !=END_ELEMENT:
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cur_node.parentNode.appendChild( cur_node )
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event=self.getEvent()
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token, cur_node = event
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if cur_node is node:
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return
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if token != END_ELEMENT:
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cur_node.parentNode.appendChild(cur_node)
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event = self.getEvent()
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def getEvent( self ):
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def getEvent(self):
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if not self.pulldom.firstEvent[1]:
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self.pulldom.lastEvent=self.pulldom.firstEvent
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self.pulldom.lastEvent = self.pulldom.firstEvent
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while not self.pulldom.firstEvent[1]:
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buf=self.stream.read( self.bufsize )
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buf=self.stream.read(self.bufsize)
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if not buf:
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#FIXME: why doesn't Expat close work?
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#self.parser.close()
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return None
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self.parser.feed( buf )
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rc=self.pulldom.firstEvent[1][0]
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self.pulldom.firstEvent[1]=self.pulldom.firstEvent[1][1]
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self.parser.feed(buf)
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rc = self.pulldom.firstEvent[1][0]
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self.pulldom.firstEvent[1] = self.pulldom.firstEvent[1][1]
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return rc
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# FIXME: sax2
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@ -168,27 +166,25 @@ class DOMEventStream:
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def _getParser():
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return xml.sax.make_parser()
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default_bufsize=(2**14)-20
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default_bufsize = (2 ** 14) - 20
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# FIXME: move into sax package for common usage
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def parse( stream_or_string, parser=None, bufsize=default_bufsize ):
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if type( stream_or_string ) == type( "" ):
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stream=open( stream_or_string )
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def parse(stream_or_string, parser=None, bufsize=default_bufsize):
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if type(stream_or_string) is type(""):
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stream = open(stream_or_string)
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else:
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stream=stream_or_string
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stream = stream_or_string
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if not parser:
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parser=_getParser()
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return DOMEventStream( stream, parser, bufsize )
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parser = _getParser()
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return DOMEventStream(stream, parser, bufsize)
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def parseString( string, parser=None ):
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def parseString(string, parser=None):
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try:
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import cStringIO
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stringio=cStringIO.StringIO
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from cStringIO import StringIO
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except ImportError:
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import StringIO
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stringio=StringIO.StringIO
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from StringIO import StringIO
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bufsize=len( string )
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buf=stringio( string )
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parser=_getParser()
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return DOMEventStream( buf, parser, bufsize )
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bufsize = len(string)
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buf = StringIO(string)
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parser = _getParser()
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return DOMEventStream(buf, parser, bufsize)
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