Zig

XML NewChildBefore

Demonstrates the Chilkat.NewChildBefore method. 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();

    xml.setTag("order");
    xml.newChild2("order_billing_info|price_list", "Listino Italia");
    xml.newChild2("order_billing_info|price_list_id", "1");
    xml.newChild2("order_billing_info|first_name", "Francesco");

    std.debug.print("{s}\n", .{try xml.getXml(alloc)});

    // We now have the following XML:

    // <?xml version="1.0" encoding="utf-8"?>
    // <order>
    //     <order_billing_info>
    //         <price_list>Listino Italia</price_list>
    //         <price_list_id>1</price_list_id>
    //         <first_name>Francesco</first_name>
    //     </order_billing_info>
    // </order>

    // If there is no "customer_id" element under "order_billing_info", then add it.
    if (xml.hasChildWithTag("order_billing_info|customer_id")) {
        std.debug.print("customer_id already exists, nothing to do...\n", .{});
        return;
    }

    // Add the customer_id element just before the "price_list" element.

    // Get the "order_billing_info" element
    const order_billing_info = try xml.findChild("order_billing_info");
    defer order_billing_info.deinit();

    // Call NewChildBefore to add an XML element <customer_id> before <price_list>
    // First get the index of the element price_list
    const index = order_billing_info.tagIndex("price_list");
    std.debug.print("index = {d}\n", .{index});

    // Add the "customer_id" element just before specified index.
    const x_cust_id = try order_billing_info.newChildBefore(index, "customer_id", "1234");
    defer x_cust_id.deinit();

    std.debug.print("{s}\n", .{try xml.getXml(alloc)});

    // We now have:

    // <?xml version="1.0" encoding="utf-8"?>
    // <order>
    //     <order_billing_info>
    //         <customer_id>1234</customer_id>
    //         <price_list>Listino Italia</price_list>
    //         <price_list_id>1</price_list_id>
    //         <first_name>Francesco</first_name>
    //     </order_billing_info>
    // </order>
}