Programming Forums > Script Programming > Python

tantric · Apr 26th, 2005, 2:40 AM

me: first time i saw python was a week ago. i'm trying to be ultraspecific in getting help....

objective: working with openRPG, which is written in python. you can insert xml docs in a certain format in openRPG. i have a character generator that makes chars in a different xml format. i want to take the "blank" openRPG-format xml sheet and insert the values from the chargen-format xlm sheet and i want to do it in python (the other option being perl, which i know a bit about)

status: reading in and storing the data using minidom tree-driven no problem, modifying the other sheet, total FUBAR. i know i should use event-driven, but i don't grok it yet....

example of blank xml sheet ....

(Toggle Plain Text)

          <row version="1.0">
            <cell>Name</cell>
            <cell/>
            <cell>Total Points</cell>
            <cell/>
          </row>

my code:

(Toggle Plain Text)

        if node.nodeValue and node.nodeValue == "Name":           
                print "found name node"
                print "name goes here", node.parentNode.nextSibling.firstChild
                namexmlstring = "<cell>" + "insert Name here" + "</cell>"
                newnamenode = parseString(namexmlstring)
                blanknamenode = node.parentNode.nextSibling.firstChild
                #things that don't work follow
                #tried many methods on many locations
                #blanknamenode = node.parentNode.nextSibling = newnamenode
                #node.parentNode.nextSibling = newnamenode
                #node.parentNode.appendChild(newnamenode) - doesn't work
                #node.parentNode._append_child(newnamenode) - doesn't work
                #node.parentNode.nextSibling.appendChild(newnamenode) - doesn't work
                #node.nextSibling.appendChild(newnamenode) - doesn't work is NoneType
                #node.parentNode.nextSibling._append_child(newnamenode) - doesn't work
                #blanknamenode.parentNode.replaceChild(blanknamenode, newnamenode) - no
                #blanknamenode.parentNode.appendChild(newnamenode) - no
                #node.appendChild(newnamenode)
                #node.parentNode.removeNode()

issue #1)what's up with the exception when an if test is undefined? why "if node.nodeValue and node.nodeValue == "Name": "? it has to be this way....

issue #2)why .appendChild AND ._append_Child? why don't the Node methods from minidom work on all nodes?

issue #3)how do i insert the idiot new node? when it does work (eg blanknamenode.replaceWholeText("yournamehere")), i keep getting:

(Toggle Plain Text)

<cell>Name</cell>yournamehere<cell/>

issue #4)somehow if i correct the blank sheet to

(Toggle Plain Text)

<cell>Name</cell>
<cell></cell>

issue #4 con't) it gets turned back the other way when i parsedxmlfile.toxml() it......

PS - yes, i'm a hack, it's tribute to python that i got as far as i did....

Moldz · Apr 26th, 2005, 1:45 PM

It's easier to just showing you some working code. If you still have questions, repost it.

(Toggle Plain Text)

import xml.dom.minidom

# the xml contents
sheet = """\
<row version="1.0">
    <cell>Name</cell>
    <cell/>
    <cell>Total Points</cell>
    <cell/>
</row>"""

# get the document (or root) node
doc = xml.dom.minidom.parseString(sheet)

# get the first <row> element, then
# all its <cell> children.
row = doc.getElementsByTagName("row")[0]
cells  = row.getElementsByTagName("cell")

# find the index of the <cell> element
# that contains the "Name" text element.
for i in range(0, len(cells)):
    if (cells[i].firstChild != None and
        cells[i].firstChild.nodeType == doc.TEXT_NODE and
        cells[i].firstChild.data == "Name"):
        break

# create the new text node for the name
newtext = doc.createTextNode("MyName")

# add the new text in the next spot
# (you should really check to make sure
# the next child is really an empty <cell>
# node.)
cells[i+1].appendChild(newtext)

# print the new xml sheet
print row.toxml()
        
# clean up to free resources
doc.unlink()

tantric · Apr 26th, 2005, 5:30 PM

WOW

that is SO much better. domo arigato

technically, this is event-driven using minidom? you don't have to respond, i'm more than set.

Moldz · Apr 26th, 2005, 7:44 PM

Nope, pure DOM using a "mini" or light implementation.

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Apr 26th, 2005, 2:40 AM	#1
tantric Newbie Join Date: Apr 2005 Posts: 2 Rep Power: 0	XML - changing textnodes with minidom me: first time i saw python was a week ago. i'm trying to be ultraspecific in getting help.... objective: working with openRPG, which is written in python. you can insert xml docs in a certain format in openRPG. i have a character generator that makes chars in a different xml format. i want to take the "blank" openRPG-format xml sheet and insert the values from the chargen-format xlm sheet and i want to do it in python (the other option being perl, which i know a bit about) status: reading in and storing the data using minidom tree-driven no problem, modifying the other sheet, total FUBAR. i know i should use event-driven, but i don't grok it yet.... example of blank xml sheet .... (Toggle Plain Text) <row version="1.0"> <cell>Name</cell> <cell/> <cell>Total Points</cell> <cell/> </row> <row version="1.0"> <cell>Name</cell> <cell/> <cell>Total Points</cell> <cell/> </row> my code: (Toggle Plain Text) if node.nodeValue and node.nodeValue == "Name": print "found name node" print "name goes here", node.parentNode.nextSibling.firstChild namexmlstring = "<cell>" + "insert Name here" + "</cell>" newnamenode = parseString(namexmlstring) blanknamenode = node.parentNode.nextSibling.firstChild #things that don't work follow #tried many methods on many locations #blanknamenode = node.parentNode.nextSibling = newnamenode #node.parentNode.nextSibling = newnamenode #node.parentNode.appendChild(newnamenode) - doesn't work #node.parentNode._append_child(newnamenode) - doesn't work #node.parentNode.nextSibling.appendChild(newnamenode) - doesn't work #node.nextSibling.appendChild(newnamenode) - doesn't work is NoneType #node.parentNode.nextSibling._append_child(newnamenode) - doesn't work #blanknamenode.parentNode.replaceChild(blanknamenode, newnamenode) - no #blanknamenode.parentNode.appendChild(newnamenode) - no #node.appendChild(newnamenode) #node.parentNode.removeNode() if node.nodeValue and node.nodeValue == "Name": print "found name node" print "name goes here", node.parentNode.nextSibling.firstChild namexmlstring = "<cell>" + "insert Name here" + "</cell>" newnamenode = parseString(namexmlstring) blanknamenode = node.parentNode.nextSibling.firstChild #things that don't work follow #tried many methods on many locations #blanknamenode = node.parentNode.nextSibling = newnamenode #node.parentNode.nextSibling = newnamenode #node.parentNode.appendChild(newnamenode) - doesn't work #node.parentNode._append_child(newnamenode) - doesn't work #node.parentNode.nextSibling.appendChild(newnamenode) - doesn't work #node.nextSibling.appendChild(newnamenode) - doesn't work is NoneType #node.parentNode.nextSibling._append_child(newnamenode) - doesn't work #blanknamenode.parentNode.replaceChild(blanknamenode, newnamenode) - no #blanknamenode.parentNode.appendChild(newnamenode) - no #node.appendChild(newnamenode) #node.parentNode.removeNode() issue #1)what's up with the exception when an if test is undefined? why "if node.nodeValue and node.nodeValue == "Name": "? it has to be this way.... issue #2)why .appendChild AND ._append_Child? why don't the Node methods from minidom work on all nodes? issue #3)how do i insert the idiot new node? when it does work (eg blanknamenode.replaceWholeText("yournamehere")), i keep getting: (Toggle Plain Text) <cell>Name</cell>yournamehere<cell/> <cell>Name</cell>yournamehere<cell/> issue #4)somehow if i correct the blank sheet to (Toggle Plain Text) <cell>Name</cell> <cell></cell> <cell>Name</cell> <cell></cell> issue #4 con't) it gets turned back the other way when i parsedxmlfile.toxml() it...... PS - yes, i'm a hack, it's tribute to python that i got as far as i did....

Apr 26th, 2005, 1:45 PM	#2
Moldz Programmer Join Date: Feb 2005 Posts: 54 Rep Power: 4	It's easier to just showing you some working code. If you still have questions, repost it. (Toggle Plain Text) import xml.dom.minidom # the xml contents sheet = """\ <row version="1.0"> <cell>Name</cell> <cell/> <cell>Total Points</cell> <cell/> </row>""" # get the document (or root) node doc = xml.dom.minidom.parseString(sheet) # get the first <row> element, then # all its <cell> children. row = doc.getElementsByTagName("row")[0] cells = row.getElementsByTagName("cell") # find the index of the <cell> element # that contains the "Name" text element. for i in range(0, len(cells)): if (cells[i].firstChild != None and cells[i].firstChild.nodeType == doc.TEXT_NODE and cells[i].firstChild.data == "Name"): break # create the new text node for the name newtext = doc.createTextNode("MyName") # add the new text in the next spot # (you should really check to make sure # the next child is really an empty <cell> # node.) cells[i+1].appendChild(newtext) # print the new xml sheet print row.toxml() # clean up to free resources doc.unlink() import xml.dom.minidom # the xml contents sheet = """\ <row version="1.0"> <cell>Name</cell> <cell/> <cell>Total Points</cell> <cell/> </row>""" # get the document (or root) node doc = xml.dom.minidom.parseString(sheet) # get the first <row> element, then # all its <cell> children. row = doc.getElementsByTagName("row")[0] cells = row.getElementsByTagName("cell") # find the index of the <cell> element # that contains the "Name" text element. for i in range(0, len(cells)): if (cells[i].firstChild != None and cells[i].firstChild.nodeType == doc.TEXT_NODE and cells[i].firstChild.data == "Name"): break # create the new text node for the name newtext = doc.createTextNode("MyName") # add the new text in the next spot # (you should really check to make sure # the next child is really an empty <cell> # node.) cells[i+1].appendChild(newtext) # print the new xml sheet print row.toxml() # clean up to free resources doc.unlink()

Apr 26th, 2005, 5:30 PM	#3
tantric Newbie Join Date: Apr 2005 Posts: 2 Rep Power: 0	WOW that is SO much better. domo arigato technically, this is event-driven using minidom? you don't have to respond, i'm more than set.

Apr 26th, 2005, 7:44 PM	#4
Moldz Programmer Join Date: Feb 2005 Posts: 54 Rep Power: 4	Nope, pure DOM using a "mini" or light implementation.

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Programming Forums > Script Programming > Python

XML - changing textnodes with minidom