(PureBasic) XML SearchForTag Method

Demonstrates the SearchForTag and SearchForTag2 methods.

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>

Chilkat PureBasic Module Download Chilkat PureBasic Module

IncludeFile "CkXml.pb"

Procedure ChilkatExample()

    xml.i = CkXml::ckCreate()
    If xml.i = 0
        Debug "Failed to create object."
        ProcedureReturn
    EndIf

    xSearchRoot.i
    xBeginAfter.i
    xFound.i

    ; The sample input XML is available at http://www.chilkatsoft.com/data/fruitSearch.xml
    success.i = CkXml::ckLoadXmlFile(xml,"qa_data/xml/fruitSearch.xml")
    If success <> 1
        Debug CkXml::ckLastErrorText(xml)
        CkXml::ckDispose(xml)
        ProcedureReturn
    EndIf

    ; Search the sub-tree rooted at "searchRoot"
    xSearchRoot = CkXml::ckFindChild(xml,"searchRoot")

    ; Search for all nodes having the tag "fruit"
    xBeginAfter = CkXml::ckGetSelf(xSearchRoot)
    xFound = CkXml::ckSearchForTag(xSearchRoot,xSearchRoot,"fruit")
    While (CkXml::ckLastMethodSuccess(xSearchRoot) = 1)

        Debug CkXml::ckContent(xFound)

        CkXml::ckDispose(xBeginAfter)

        xBeginAfter = xFound
        xFound = CkXml::ckSearchForTag(xSearchRoot,xBeginAfter,"fruit")
    Wend

    CkXml::ckDispose(xBeginAfter)

    Debug "--------------------------"

    ; ---------------------------------------------------------------------------------
    ; Now do the same, but instead use SearchForTag2
    ; which updates the internal reference of the caller instead
    ; of returning the found node.
    xSearch.i

    xBeginAfter = CkXml::ckGetSelf(xSearchRoot)
    xSearch = CkXml::ckGetSelf(xSearchRoot)

    success = CkXml::ckSearchForTag2(xSearch,xBeginAfter,"fruit")
    While success = 1

        Debug CkXml::ckContent(xSearch)

        ; Copy the internal references so that the next search
        ; begins after the found node.
        CkXml::ckCopyRef(xBeginAfter,xSearch)
        CkXml::ckCopyRef(xSearch,xSearchRoot)

        success = CkXml::ckSearchForTag2(xSearch,xBeginAfter,"fruit")
    Wend

    CkXml::ckDispose(xSearch)

    CkXml::ckDispose(xBeginAfter)

    CkXml::ckDispose(xSearchRoot)



    CkXml::ckDispose(xml)


    ProcedureReturn
EndProcedure