Tcl

Find Direct Child with Specific Tag

See more XML Examples

Demonstrates how to find a direct child having a specific tag.

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

<root>
    <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>
</root>

Tcl

load ./chilkat.dll

set success 0

set xml [new_CkXml]

# The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
set success [CkXml_LoadXmlFile $xml "qa_data/xml/fruit.xml"]
if {$success != 1} then {
    puts [CkXml_lastErrorText $xml]
    delete_CkXml $xml
    exit
}

# Find the direct child node having the tag "meat", and 
# return a new instance of the XML object referencing the
# child node, if found.
# child is a CkXml
set child [CkXml_FindChild $xml "meat"]
if {[CkXml_get_LastMethodSuccess $xml] == 0} then {
    puts "No direct child having the tag \"meat\" was found."
} else {
    puts "Content = [CkXml_content $child]"
    delete_CkXml $child

}

# The same can be accomplished without creating a new 
# XML object instance.  Instead, the FindChild2 method updates
# the caller's internal reference to the found child, if successful.
set success [CkXml_FindChild2 $xml "meat"]
if {$success == 1} then {
    # Success!  The xml object now references the found child.
    puts "Content = [CkXml_content $xml]"
    # Restore the reference back to the parent.
    set success [CkXml_GetParent2 $xml]
} else {
    puts "No direct child having the tag \"meat\" was found."
}


delete_CkXml $xml