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import string
from xml.xslt import NullWriter, PlainTextWriter
from xml.xslt import HtmlWriter, XmlWriter
class OutputHandler(NullWriter.NullWriter):
def __init__(self, outputParams, stream, notifyFunc):
self._outputParams = outputParams
self._stream = stream
self._notify = notifyFunc
self._stack = []
def _finalize(self, writerClass):
writer = writerClass(self._outputParams, self._stream)
self._notify(writer)
writer.startDocument()
newline = 0
for (cmd, args, kw) in self._stack:
if newline:
writer.text('\n')
else:
newline = 1
apply(getattr(writer, cmd), args, kw)
self._outputParams = None
self._stream = None
self._notify = None
self._stack = []
def getResult(self):
return ''
def startDocument(self):
if self._outputParams.method == 'html':
self._finalize(HtmlWriter.HtmlWriter)
elif self._outputParams.method == 'xml':
self._finalize(XmlWriter.XmlWriter)
elif self._outputParams.method == 'text':
self._finalize(PlainTextWriter.PlainTextWriter)
def text(self, *args, **kw):
self._stack.append(('text', args, kw))
if string.strip(args[0]):
self._finalize(XmlWriter.XmlWriter)
def processingInstruction(self, *args, **kw):
self._stack.append(('processingInstruction', args, kw))
def comment(self, *args, **kw):
self._stack.append(('comment', args, kw))
def startElement(self, *args, **kw):
self._stack.append(('startElement', args, kw))
tagName = args[0]
if string.upper(tagName) == 'HTML':
self._finalize(HtmlWriter.HtmlWriter)
else:
self._finalize(XmlWriter.XmlWriter)
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