(Perl) XML Sort by Content

Demonstrates the SortByContent method.

The input XML, available at http://www.chilkatsoft.com/data/fruitSort2.xml, is this:

<root>
    <fruits>
        <apples>
            <apple>fuji</apple>
            <apple>gala</apple>
            <apple>granny smith</apple>
            <apple>honeycrisp</apple>
            <apple>mcintosh</apple>
        </apples>
        <fruit>banana</fruit>
        <fruit>blackberry</fruit>
        <fruit>blueberry</fruit>
        <fruit>orange</fruit>
        <fruit>pear</fruit>
    </fruits>
</root>

Chilkat Perl Downloads Perl Module for Windows, MacOS, Linux, Alpine Linux, Solaris

use chilkat();

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

# The sample input XML is available at http://www.chilkatsoft.com/data/fruitSort2.xml
$success = $xml->LoadXmlFile("fruitSort2.xml");
if ($success != 1) {
    print $xml->lastErrorText() . "\r\n";
    exit;
}

# Sort the direct children under the "fruits" node by tag:
# xSortRoot is a Xml
$xSortRoot = $xml->FindChild("fruits");

# Sort in ascending order.
$bAscending = 1;
$xSortRoot->SortByContent($bAscending);

# Show the result:
print $xml->getXml() . "\r\n";

# Note:  The "apples" node contains child nodes, but its 
# text content is 0-length (empty).  Therefore, when sorting in
# ascending order, it will be positioned before the direct
# children containing non-empty content.

# <root>
#     <fruits>
#         <apples>
#             <apple>granny smith</apple>
#             <apple>gala</apple>
#             <apple>fuji</apple>
#             <apple>mcintosh</apple>
#             <apple>honeycrisp</apple>
#         </apples>
#         <fruit>banana</fruit>
#         <fruit>blackberry</fruit>
#         <fruit>blueberry</fruit>
#         <fruit>orange</fruit>
#         <fruit>pear</fruit>
#     </fruits>
# </root>

# Sort the direct children under the "apples" node:
$success = $xSortRoot->FindChild2("apples");

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

# <root>
#     <fruits>
#         <apples>
#             <apple>fuji</apple>
#             <apple>gala</apple>
#             <apple>granny smith</apple>
#             <apple>honeycrisp</apple>
#             <apple>mcintosh</apple>
#         </apples>
#         <fruit>banana</fruit>
#         <fruit>blackberry</fruit>
#         <fruit>blueberry</fruit>
#         <fruit>orange</fruit>
#         <fruit>pear</fruit>
#     </fruits>
# </root>