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Zig

Move XML Subtree to Another XML Document

Demonstrates using the InsertChildTreeBefore method to move a fragment of XML from one document to another.

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

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

    // Source XML is this:

    // <?xml version='1.0' encoding='UTF-8'?>
    // <soapenv:Envelope xmlns:"soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    //               <soapenv:Header/>
    //               <soapenv:Body>
    //                             <GetCustomerResponse xmlns="http://www.midoco.de/crm" xmlns:tns="http://www.midoco.de/ws">
    //                                           <CrmCustomer addresseeLine1="Max Mustermann" addresseeLine2="" changingUser="123456" >
    //                                                          <CrmAddress addressId="2225355" addressTypeId="1" checkStatus="O" city="Wien" countryCode="AT" customerId="000071"/>
    //                                                          <CrmPerson birthDay="30" birthMonth="8" birthYear="1977" birthday="1977-08-30T00:00:00.000+02:00" birthdayNotProvided="false"/>
    //                                           </CrmCustomer>
    //                           </GetCustomerResponse>
    //               </soapenv:Body>
    // </soapenv:Envelope>

    // Build the source XML.
    const src_xml = try chilkat.Xml.init();
    defer src_xml.deinit();
    src_xml.setTag("soapenv:Envelope");
    src_xml.addAttribute("xmlns:soapenv", "http://schemas.xmlsoap.org/soap/envelope/") catch {};
    src_xml.updateChildContent("soapenv:Header", "");
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse", true, "xmlns", "http://www.midoco.de/crm") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse", true, "xmlns:tns", "http://www.midoco.de/ws") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer", true, "addresseeLine1", "Max Mustermann") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer", true, "addresseeLine2", "") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer", true, "changingUser", "123456") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "addressId", "2225355") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "addressTypeId", "1") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "checkStatus", "O") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "city", "Wien") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "countryCode", "AT") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmAddress", true, "customerId", "000071") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmPerson", true, "birthDay", "30") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmPerson", true, "birthMonth", "8") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmPerson", true, "birthYear", "1977") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmPerson", true, "birthday", "1977-08-30T00:00:00.000+02:00") catch {};
    src_xml.updateAttrAt("soapenv:Body|GetCustomerResponse|CrmCustomer|CrmPerson", true, "birthdayNotProvided", "false") catch {};

    // Destination XML is this:

    // <?xml version="1.0" encoding="utf-8"?>
    // <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    //     <SOAP-ENV:Header>
    //         <m:Credentials xmlns:m="http://www.midoco.de/system">
    //             <m:Login>User</m:Login>
    //             <m:Password>Pass</m:Password>
    //             <m:OrgUnit>ABC</m:OrgUnit>
    //             <m:Locale>de_DE</m:Locale>
    //         </m:MidocoCredentials>
    //     </SOAP-ENV:Header>
    //     <SOAP-ENV:Body>
    //         <SaveCustomerRequest>
    //         </SaveCustomerRequest>
    //     </SOAP-ENV:Body>
    // </SOAP-ENV:Envelope>

    const dest_xml = try chilkat.Xml.init();
    defer dest_xml.deinit();
    dest_xml.setTag("SOAP-ENV:Envelope");
    dest_xml.addAttribute("xmlns:SOAP-ENV", "http://schemas.xmlsoap.org/soap/envelope/") catch {};
    dest_xml.addAttribute("xmlns:SOAP-ENC", "http://schemas.xmlsoap.org/soap/encoding/") catch {};
    dest_xml.addAttribute("xmlns:xsi", "http://www.w3.org/2001/XMLSchema-instance") catch {};
    dest_xml.addAttribute("xmlns:xsd", "http://www.w3.org/2001/XMLSchema") catch {};
    dest_xml.updateAttrAt("SOAP-ENV:Header|m:Credentials", true, "xmlns:m", "http://www.midoco.de/system") catch {};
    dest_xml.updateChildContent("SOAP-ENV:Header|m:Credentials|m:Login", "User");
    dest_xml.updateChildContent("SOAP-ENV:Header|m:Credentials|m:Password", "Pass");
    dest_xml.updateChildContent("SOAP-ENV:Header|m:Credentials|m:OrgUnit", "ABC");
    dest_xml.updateChildContent("SOAP-ENV:Header|m:Credentials|m:Locale", "de_DE");
    dest_xml.updateChildContent("SOAP-ENV:Body|SaveCustomerRequest", "");

    // We want to move the "CrmCustomer" subtree in the source XML to inside the "SaveCustomerRequest" element in the destination.

    // Navigate to CrmCustomer
    const crm_cust = src_xml.findChild("soapenv:Body|GetCustomerResponse|CrmCustomer") catch {
        std.debug.print("Failed to find CrmCustomer element.\n", .{});
        return;
    };
    defer crm_cust.deinit();

    // Navigate to SaveCustomerRequest
    const crm_save_cust = dest_xml.findChild("SOAP-ENV:Body|SaveCustomerRequest") catch {
        std.debug.print("Failed to find SaveCustomerRequest element.\n", .{});
        return;
    };
    defer crm_save_cust.deinit();

    // Move CrmCustomer tree to SaveCustomerRequest.
    crm_save_cust.insertChildTreeBefore(0, crm_cust);

    // Look at the resulting destXml.  You can see the CrmCustomer subtree moved to underneath SaveCustomerRequest.
    std.debug.print("{s}\n", .{try dest_xml.getXml(alloc)});

    // <?xml version="1.0" encoding="utf-8"?>
    // <SOAP-ENV:Envelope xmlns:SOAP-ENV="http://schemas.xmlsoap.org/soap/envelope/" xmlns:SOAP-ENC="http://schemas.xmlsoap.org/soap/encoding/" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema">
    //     <SOAP-ENV:Header>
    //         <m:Credentials xmlns:m="http://www.midoco.de/system">
    //             <m:Login>User</m:Login>
    //             <m:Password>Pass</m:Password>
    //             <m:OrgUnit>ABC</m:OrgUnit>
    //             <m:Locale>de_DE</m:Locale>
    //         </m:Credentials>
    //     </SOAP-ENV:Header>
    //     <SOAP-ENV:Body>
    //         <SaveCustomerRequest>
    //             <CrmCustomer addresseeLine1="Max Mustermann" addresseeLine2="" changingUser="123456">
    //                 <CrmAddress addressId="2225355" addressTypeId="1" checkStatus="O" city="Wien" countryCode="AT" customerId="000071"/>
    //                 <CrmPerson birthDay="30" birthMonth="8" birthYear="1977" birthday="1977-08-30T00:00:00.000+02:00" birthdayNotProvided="false"/>
    //             </CrmCustomer>
    //         </SaveCustomerRequest>
    //     </SOAP-ENV:Body>
    // </SOAP-ENV:Envelope>

    // Look at the resulting srcXml.  The CrmCustomer subtree was removed.
    std.debug.print("{s}\n", .{try src_xml.getXml(alloc)});

    // <?xml version="1.0" encoding="utf-8"?>
    // <soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/">
    //     <soapenv:Header/>
    //     <soapenv:Body>
    //         <GetCustomerResponse xmlns="http://www.midoco.de/crm" xmlns:tns="http://www.midoco.de/ws"/>
    //     </soapenv:Body>
    // </soapenv:Envelope>
}