from xml.xslt.Processor import Processor
from xml.xslt.StylesheetReader import StylesheetReader
class StylesheetFromDict(StylesheetReader):
"A stylesheet reader that loads XSLT stylesheets from a python dictionary"
def __init__(self, styles, *args):
"Remember the dict we want to load the stylesheets from"
apply(StylesheetReader.__init__, (self,) + args)
self.styles = styles
self.__myargs = args
def __getinitargs__(self):
"Return init args for clone()"
return (self.styles,) + self.__myargs
def fromUri(self, uri, baseUri='', ownerDoc=None, stripElements=None):
"Load stylesheet from a dict"
parts = uri.split(':', 1)
if parts[0] == 'internal' and self.styles.has_key(parts[1]):
# load the stylesheet from the internal repository (our dict)
return StylesheetReader.fromString(self, self.styles[parts[1]],
baseUri, ownerDoc, stripElements)
else:
# revert to normal behaviour
return StylesheetReader.fromUri(self, uri,
baseUri, ownerDoc, stripElements)
if __name__ == "__main__":
# the sample stylesheet repository
internal_stylesheets = {
'second-author.xsl': """
<person xmlns:xsl="http://www.w3.org/1999/XSL/Transform" xsl:version="1.0">
<xsl:value-of select="books/book/author[2]"/>
</person>
"""
}
# the sample document, referring to an "internal" stylesheet
xmldoc = """
<?xml-stylesheet href="internal:second-author.xsl" type="text/xml"?>
<books>
<book title="Python Essential Reference">
<author>David M. Beazley</author>
<author>Guido van Rossum</author>
</book>
</books>
"""
# create XSLT processor and run it
processor = Processor()
processor.setStylesheetReader(StylesheetFromDict(internal_stylesheets))
print processor.runString(xmldoc)
