xml.dom.minidom python

Posted in Python |

Apr 20

String lezen van een bestand of een variabele

from xml.dom.minidom import parse, parseString

dom1 = parse(’c:\\temp\\mydata.xml’) # parse an XML file by name

datasource = open(’c:\\temp\\mydata.xml’)
dom2 = parse(datasource) # parse an open file

dom3 = parseString(’Some data some more data‘)

Het is mogelijk om dom (document) object aanmaken met getDOMImplementation

from xml.dom.minidom import getDOMImplementation

impl = getDOMImplementation()

newdoc = impl.createDocument(None, “some_tag”, None)
top_element = newdoc.documentElement
text = newdoc.createTextNode(’Some textual content.’)
top_element.appendChild(text)

Als een document object aangemaakt is kunnen alle functies gebruikt worden die in DOM gespecificeerd zijn.

Voorbeeld:

import xml.dom.minidom

document = """\
<slideshow>
<title>Demo slideshow</title>
<slide><title>Slide title</title>
<point>This is a demo</point>
<point>Of a program for processing slides</point>
</slide>

<slide><title>Another demo slide</title>
<point>It is important</point>
<point>To have more than</point>
<point>one slide</point>
</slide>
</slideshow>
"""

dom = xml.dom.minidom.parseString(document)

def getText(nodelist):
    rc = ""
    for node in nodelist:
       if node.nodeType == node.TEXT_NODE:
            rc = rc + node.data
    return rc

def handleSlideshow(slideshow):
    print "<html>"
    handleSlideshowTitle(slideshow.getElementsByTagName("title")[0])
    slides = slideshow.getElementsByTagName("slide")
    handleToc(slides)
    handleSlides(slides)
    print "</html>"

def handleSlides(slides):
    for slide in slides:
       handleSlide(slide)

def handleSlide(slide):
    handleSlideTitle(slide.getElementsByTagName("title")[0])
    handlePoints(slide.getElementsByTagName("point"))

def handleSlideshowTitle(title):
    print "<title>%s</title>" % getText(title.childNodes)

def handleSlideTitle(title):
    print "<h2>%s</h2>" % getText(title.childNodes)

def handlePoints(points):
    print "<ul>"
    for point in points:
       handlePoint(point)
    print "</ul>"

def handlePoint(point):
    print "<li>%s</li>" % getText(point.childNodes)

def handleToc(slides):
    for slide in slides:
       title = slide.getElementsByTagName("title")[0]
       print "<p>%s</p>" % getText(title.childNodes)

handleSlideshow(dom)

http://docs.python.org/lib/module-xml.dom.minidom.html