Zig

Find Direct Child with Specific Tag

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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>

Zig

const std = @import("std");
const chilkat = @import("chilkat");

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    const xml = try chilkat.Xml.init();
    defer xml.deinit();

    // The sample input XML is available at http://www.chilkatsoft.com/data/fruit.xml
    xml.loadXmlFile("qa_data/xml/fruit.xml") catch {
        std.debug.print("{s}\n", .{try xml.getLastErrorText(alloc)});
        return;
    };

    // Find the direct child node having the tag "meat", and
    // return a new instance of the XML object referencing the
    // child node, if found.
    const child = try xml.findChild("meat");
    defer child.deinit();
    if (!xml.getLastMethodSuccess()) {
        std.debug.print("No direct child having the tag \"meat\" was found.\n", .{});
    } else {
        std.debug.print("Content = {s}\n", .{try child.getContent(alloc)});
    }

    // 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.
    if (xml.findChild2("meat")) {
        // Success!  The xml object now references the found child.
        std.debug.print("Content = {s}\n", .{try xml.getContent(alloc)});
        // Restore the reference back to the parent.
        try xml.getParent2();
    } else |_| {
        std.debug.print("No direct child having the tag \"meat\" was found.\n", .{});
    }
}