mirror of https://github.com/python/cpython.git
Demos of the new XML support from Lars Marius Garshol <larsga@garshol.priv.no>.
This commit is contained in:
Fred Drake
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import sys
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from xml.sax import make_parser, handler
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class FancyCounter(handler.ContentHandler):
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def __init__(self):
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self._elems = 0
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self._attrs = 0
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self._elem_types = {}
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self._attr_types = {}
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def startElement(self, name, attrs):
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self._elems = self._elems + 1
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self._attrs = self._attrs + len(attrs)
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self._elem_types[name] = self._elem_types.get(name, 0) + 1
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for name in attrs.keys():
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self._attr_types[name] = self._attr_types.get(name, 0) + 1
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def endDocument(self):
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print "There were", self._elems, "elements."
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print "There were", self._attrs, "attributes."
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print "---ELEMENT TYPES"
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for pair in self._elem_types.items():
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print "%20s %d" % pair
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print "---ATTRIBUTE TYPES"
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for pair in self._attr_types.items():
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print "%20s %d" % pair
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parser = make_parser()
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parser.setContentHandler(FancyCounter())
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parser.parse(sys.argv[1])
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"""
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A simple demo that reads in an XML document and spits out an equivalent,
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but not necessarily identical, document.
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"""
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import sys, string
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from xml.sax import saxutils, handler, make_parser
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# --- The ContentHandler
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class ContentGenerator(handler.ContentHandler):
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def __init__(self, out = sys.stdout):
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handler.ContentHandler.__init__(self)
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self._out = out
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# ContentHandler methods
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def startDocument(self):
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self._out.write('<?xml version="1.0" encoding="iso-8859-1"?>\n')
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def startElement(self, name, attrs):
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self._out.write('<' + name)
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for (name, value) in attrs.items():
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self._out.write(' %s="%s"' % (name, saxutils.escape(value)))
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self._out.write('>')
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def endElement(self, name):
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self._out.write('</%s>' % name)
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def characters(self, content):
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self._out.write(saxutils.escape(content))
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def ignorableWhitespace(self, content):
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self._out.write(content)
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def processingInstruction(self, target, data):
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self._out.write('<?%s %s?>' % (target, data))
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# --- The main program
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parser = make_parser()
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parser.setContentHandler(ContentGenerator())
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parser.parse(sys.argv[1])
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import sys
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from xml.sax import make_parser, handler
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# --- Templates
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top = \
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"""
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
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<HTML>
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<HEAD>
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<TITLE>%s</TITLE>
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</HEAD>
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<BODY>
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<H1>%s</H1>
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"""
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bottom = \
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"""
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</ul>
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<HR>
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<ADDRESS>
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Converted to HTML by sax_rss2html.py.
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</ADDRESS>
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</BODY>
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</HTML>
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"""
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# --- The ContentHandler
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class RSSHandler(handler.ContentHandler):
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def __init__(self, out = sys.stdout):
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handler.ContentHandler.__init__(self)
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self._out = out
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self._text = ""
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self._parent = None
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self._list_started = 0
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self._title = None
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self._link = None
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self._descr = ""
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# ContentHandler methods
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def startElement(self, name, attrs):
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if name == "channel" or name == "image" or name == "item":
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self._parent = name
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self._text = ""
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def endElement(self, name):
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if self._parent == "channel":
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if name == "title":
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self._out.write(top % (self._text, self._text))
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elif name == "description":
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self._out.write("<p>%s</p>\n" % self._text)
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elif self._parent == "item":
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if name == "title":
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self._title = self._text
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elif name == "link":
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self._link = self._text
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elif name == "description":
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self._descr = self._text
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elif name == "item":
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if not self._list_started:
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self._out.write("<ul>\n")
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self._list_started = 1
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self._out.write(' <li><a href="%s">%s</a> %s\n' %
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(self._link, self._title, self._descr))
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self._title = None
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self._link = None
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self._descr = ""
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if name == "rss":
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self._out.write(bottom)
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def characters(self, content):
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self._text = self._text + content
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# --- Main program
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parser = make_parser()
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parser.setContentHandler(RSSHandler())
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parser.parse(sys.argv[1])
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