(Perl) AddAttribute - Insert New Attribute in an XML Node

Demonstrates adding an name=value attribute to an XML element.

This example uses the XML sample file here: sample1.xml. The sample1.xml file contains this content:

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use chilkat();

$xml = chilkat::CkXml->new();

$success = $xml->LoadXmlFile("qa_data/xml/sample1.xml");
if ($success != 1) {
    print $xml->lastErrorText() . "\r\n";
    exit;
}

# Navigate to the "books" element:
$bFound = $xml->FindChild2("books");
if ($bFound == 0) {
    print "No books child found!" . "\r\n";
    exit;
}

$numChildren = $xml->get_NumChildren();

$i = 0;
while ($i < $numChildren) {

    # Navigate to the Nth book 
    $xml->GetChild2($i);

    # Display the book title:
    print $xml->getAttrValue("title") . "\r\n";

    # Add a new integer attribute:
    # Should never fail..
    $xml->AddAttributeInt("bookId",$i);

    # Add a new unread="yes" attribute:
    $xml->AddAttribute("unread","yes");

    # Navigate back up to the parent:
    $xml->GetParent2();

    $i = $i + 1;
}

# Navigate back to the document root:
$xml->GetRoot2();

# Save the updated document:
$success = $xml->SaveXml("modified.xml");
if ($success != 1) {
    print $xml->lastErrorText() . "\r\n";
    exit;
}

print $xml->getXml() . "\r\n";