mirror of https://github.com/python/cpython
Demos of the new XML support from Lars Marius Garshol <larsga@garshol.priv.no>.
This commit is contained in:
Fred Drake
parent
f155170f09
commit
ac5f7483e8
|
|
@ -0,0 +1,36 @@
|
|||
import sys
|
||||
|
||||
from xml.sax import make_parser, handler
|
||||
|
||||
class FancyCounter(handler.ContentHandler):
|
||||
|
||||
def __init__(self):
|
||||
self._elems = 0
|
||||
self._attrs = 0
|
||||
self._elem_types = {}
|
||||
self._attr_types = {}
|
||||
|
||||
def startElement(self, name, attrs):
|
||||
self._elems = self._elems + 1
|
||||
self._attrs = self._attrs + len(attrs)
|
||||
self._elem_types[name] = self._elem_types.get(name, 0) + 1
|
||||
|
||||
for name in attrs.keys():
|
||||
self._attr_types[name] = self._attr_types.get(name, 0) + 1
|
||||
|
||||
def endDocument(self):
|
||||
print "There were", self._elems, "elements."
|
||||
print "There were", self._attrs, "attributes."
|
||||
|
||||
print "---ELEMENT TYPES"
|
||||
for pair in self._elem_types.items():
|
||||
print "%20s %d" % pair
|
||||
|
||||
print "---ATTRIBUTE TYPES"
|
||||
for pair in self._attr_types.items():
|
||||
print "%20s %d" % pair
|
||||
|
||||
|
||||
parser = make_parser()
|
||||
parser.setContentHandler(FancyCounter())
|
||||
parser.parse(sys.argv[1])
|
||||
|
|
@ -0,0 +1,45 @@
|
|||
"""
|
||||
A simple demo that reads in an XML document and spits out an equivalent,
|
||||
but not necessarily identical, document.
|
||||
"""
|
||||
|
||||
import sys, string
|
||||
|
||||
from xml.sax import saxutils, handler, make_parser
|
||||
|
||||
# --- The ContentHandler
|
||||
|
||||
class ContentGenerator(handler.ContentHandler):
|
||||
|
||||
def __init__(self, out = sys.stdout):
|
||||
handler.ContentHandler.__init__(self)
|
||||
self._out = out
|
||||
|
||||
# ContentHandler methods
|
||||
|
||||
def startDocument(self):
|
||||
self._out.write('<?xml version="1.0" encoding="iso-8859-1"?>\n')
|
||||
|
||||
def startElement(self, name, attrs):
|
||||
self._out.write('<' + name)
|
||||
for (name, value) in attrs.items():
|
||||
self._out.write(' %s="%s"' % (name, saxutils.escape(value)))
|
||||
self._out.write('>')
|
||||
|
||||
def endElement(self, name):
|
||||
self._out.write('</%s>' % name)
|
||||
|
||||
def characters(self, content):
|
||||
self._out.write(saxutils.escape(content))
|
||||
|
||||
def ignorableWhitespace(self, content):
|
||||
self._out.write(content)
|
||||
|
||||
def processingInstruction(self, target, data):
|
||||
self._out.write('<?%s %s?>' % (target, data))
|
||||
|
||||
# --- The main program
|
||||
|
||||
parser = make_parser()
|
||||
parser.setContentHandler(ContentGenerator())
|
||||
parser.parse(sys.argv[1])
|
||||
|
|
@ -0,0 +1,91 @@
|
|||
import sys
|
||||
|
||||
from xml.sax import make_parser, handler
|
||||
|
||||
# --- Templates
|
||||
|
||||
top = \
|
||||
"""
|
||||
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
|
||||
<HTML>
|
||||
<HEAD>
|
||||
<TITLE>%s</TITLE>
|
||||
</HEAD>
|
||||
|
||||
<BODY>
|
||||
<H1>%s</H1>
|
||||
"""
|
||||
|
||||
bottom = \
|
||||
"""
|
||||
</ul>
|
||||
|
||||
<HR>
|
||||
<ADDRESS>
|
||||
Converted to HTML by sax_rss2html.py.
|
||||
</ADDRESS>
|
||||
|
||||
</BODY>
|
||||
</HTML>
|
||||
"""
|
||||
|
||||
# --- The ContentHandler
|
||||
|
||||
class RSSHandler(handler.ContentHandler):
|
||||
|
||||
def __init__(self, out = sys.stdout):
|
||||
handler.ContentHandler.__init__(self)
|
||||
self._out = out
|
||||
|
||||
self._text = ""
|
||||
self._parent = None
|
||||
self._list_started = 0
|
||||
self._title = None
|
||||
self._link = None
|
||||
self._descr = ""
|
||||
|
||||
# ContentHandler methods
|
||||
|
||||
def startElement(self, name, attrs):
|
||||
if name == "channel" or name == "image" or name == "item":
|
||||
self._parent = name
|
||||
|
||||
self._text = ""
|
||||
|
||||
def endElement(self, name):
|
||||
if self._parent == "channel":
|
||||
if name == "title":
|
||||
self._out.write(top % (self._text, self._text))
|
||||
elif name == "description":
|
||||
self._out.write("<p>%s</p>\n" % self._text)
|
||||
|
||||
elif self._parent == "item":
|
||||
if name == "title":
|
||||
self._title = self._text
|
||||
elif name == "link":
|
||||
self._link = self._text
|
||||
elif name == "description":
|
||||
self._descr = self._text
|
||||
elif name == "item":
|
||||
if not self._list_started:
|
||||
self._out.write("<ul>\n")
|
||||
self._list_started = 1
|
||||
|
||||
self._out.write(' <li><a href="%s">%s</a> %s\n' %
|
||||
(self._link, self._title, self._descr))
|
||||
|
||||
self._title = None
|
||||
self._link = None
|
||||
self._descr = ""
|
||||
|
||||
if name == "rss":
|
||||
self._out.write(bottom)
|
||||
|
||||
def characters(self, content):
|
||||
self._text = self._text + content
|
||||
|
||||
# --- Main program
|
||||
|
||||
parser = make_parser()
|
||||
parser.setContentHandler(RSSHandler())
|
||||
parser.parse(sys.argv[1])
|
||||
Loading…
Reference in New Issue