Zig

Get an Email's MIME into a StringBuilder

Demonstrates the Chilkat Email.GetMimeSb method, which returns the email as MIME text (header, body or bodies, related items, and all attachments) by appending it to a StringBuilder object. This example builds a message and appends its MIME to a StringBuilder.

Background: This is a StringBuilder-based alternative to GetMime, which returns a plain string. Writing into a StringBuilder is more efficient when the MIME is large or when you intend to further manipulate it — searching, replacing, or accumulating additional text — without creating many intermediate string copies.

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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();

    // Demonstrates the GetMimeSb method, which returns the email as MIME text (headers, bodies,
    // related items, and attachments), appending it to a StringBuilder object.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("GetMimeSb example");
    email.setFrom("alice@example.com");
    email.addTo("Bob", "bob@example.com") catch {};
    email.setBody("Hello!");

    // Append the complete MIME to a StringBuilder.
    const sb_mime = try chilkat.StringBuilder.init();
    defer sb_mime.deinit();
    email.getMimeSb(sb_mime) catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

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