Lua

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>

Lua

local chilkat = require("chilkat")

local xml = chilkat.Xml.new()

-- The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
local success = xml:load_xml_file("qa_data/xml/fruit.xml")
if not success then
    print(xml.last_error_text)
    return
end

-- Find the direct child node having the tag "meat", and
-- return a new instance of the XML object referencing the
-- child node, if found.
local child = xml:find_child("meat")
if not xml.last_method_success then
    print("No direct child having the tag \"meat\" was found.")
else
    print("Content = " .. child.content)
end

-- 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.
success = xml:find_child2("meat")
if success then
    -- Success!  The xml object now references the found child.
    print("Content = " .. xml.content)
    -- Restore the reference back to the parent.
    success = xml:get_parent2()
else
    print("No direct child having the tag \"meat\" was found.")
end