Chilkat2-Python

XML SearchForAttribute Method

See more XML Examples

Demonstrates the SearchForAttribute method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSearch.xml, is this:

<root>
    <searchRoot>
        <fruit color="red">apple</fruit>
        <fruit color="green">pear</fruit>
        <veg color="orange">carrot</veg>
        <meat animal="cow">beef</meat>
        <xyz>
            <fruit color="blue">blueberry</fruit>
            <veg color="green">broccoli</veg>
        </xyz>
        <fruit color="purple">grape</fruit>
        <cheese color="yellow">cheddar</cheese>
    </searchRoot>
    <fruit color="red">strawberry</fruit>
    <fruit color="orange">peach</fruit>
</root>

Chilkat2-Python

import sys
import chilkat2

success = False

xml = chilkat2.Xml()

success = xml.LoadXmlFile("qa_data/xml/fruitSearch.xml")
if (success != True):
    print(xml.LastErrorText)
    sys.exit()

# Search the sub-tree rooted at "searchRoot"
# xSearchRoot is a CkXml
xSearchRoot = xml.FindChild("searchRoot")
if (xml.LastMethodSuccess == False):
    print("searchRoot not found, searching from root.")
    # xSearchRoot is a CkXml
    xSearchRoot = xml.GetRoot()

# Search for all "fruit" nodes having a color attribute
# where the name of the color ends in "e"
# xBeginAfter is a CkXml
xBeginAfter = xSearchRoot.GetSelf()
# xFound is a CkXml
xFound = xSearchRoot.SearchForAttribute(xBeginAfter,"fruit","color","*e")
while (xSearchRoot.LastMethodSuccess == True) :

    print(xFound.Content + ": " + xFound.GetAttrValue("color"))

    # xBeginAfter is a CkXml
    xBeginAfter = xFound
    # xFound is a CkXml
    xFound = xSearchRoot.SearchForAttribute(xBeginAfter,"fruit","color","*e")

# The correct output is:
# grape: purple
# blueberry: blue

print("--------------------------")

# ---------------------------------------------------------------------------------
# Now do the same, but instead use SearchForAttribute2
# which updates the internal reference of the caller instead
# of returning the found node.

# xBeginAfter is a CkXml
xBeginAfter = xSearchRoot.GetSelf()
# xSearch is a CkXml
xSearch = xSearchRoot.GetSelf()

success = xSearch.SearchForAttribute2(xBeginAfter,"fruit","color","*e")
while success == True :

    print(xSearch.Content + ": " + xSearch.GetAttrValue("color"))

    # Copy the internal references so that the next search
    # begins after the found node.
    xBeginAfter.CopyRef(xSearch)
    xSearch.CopyRef(xSearchRoot)

    success = xSearch.SearchForAttribute2(xBeginAfter,"fruit","color","*e")