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Zig Requires Chilkat v11.0.0+

Swap JSON Objects

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Demonstrates how to swap two JSON objects within a JSON document.

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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();

    const json = try chilkat.JsonObject.init();
    defer json.deinit();
    json.setEmitCompact(false);

    // Load the following JSON:

    // {
    //   "petter": {
    //     "DOB": "26/02/1986",
    //     "gender": "male",
    //     "country": "US"
    //   },
    //   "Sara": {
    //     "DOB": "13/05/1982",
    //     "gender": "female",
    //     "country": "FR"
    //   },
    //   "Jon": {
    //     "DOB": "19/03/1984",
    //     "gender": "male",
    //     "country": "UK"
    //   }
    // }

    json.loadFile("qa_data/json/people.json") catch {
        std.debug.print("{s}\n", .{try json.getLastErrorText(alloc)});
        return;
    };

    // Swap the positions of Jon and Sara.
    var index1: i32 = json.indexOf("Jon");
    var index2: i32 = json.indexOf("Sara");
    json.swap(index1, index2) catch {};

    // We have this now:
    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // {
    //   "petter": {
    //     "DOB": "26/02/1986",
    //     "gender": "male",
    //     "country": "US"
    //   },
    //   "Jon": {
    //     "DOB": "19/03/1984",
    //     "gender": "male",
    //     "country": "UK"
    //   },
    //   "Sara": {
    //     "DOB": "13/05/1982",
    //     "gender": "female",
    //     "country": "FR"
    //   }
    // }

    // To swap an inner member:

    const json_sara = try chilkat.JsonObject.init();
    defer json_sara.deinit();
    json.objectOf2("Sara", json_sara) catch {};

    index1 = json_sara.indexOf("DOB");
    index2 = json_sara.indexOf("country");
    json_sara.swap(index1, index2) catch {};

    // We now have this:
    std.debug.print("{s}\n", .{try json.emit(alloc)});

    // {
    //   "petter": {
    //     "DOB": "26/02/1986",
    //     "gender": "male",
    //     "country": "US"
    //   },
    //   "Jon": {
    //     "DOB": "19/03/1984",
    //     "gender": "male",
    //     "country": "UK"
    //   },
    //   "Sara": {
    //     "country": "FR",
    //     "gender": "female",
    //     "DOB": "13/05/1982"
    //   }
    // }
}