Zig

Set a MIME Body from Transfer-Encoded Text

Demonstrates the Chilkat Mime.SetBodyFromEncoded method, which sets the body from already transfer-encoded text. The first argument is the encoding (base64 or quoted-printable) and the second is the encoded text.

Background: Sometimes you already hold content in its encoded form — a Base64 string from a database or another API — and re-decoding just to have Chilkat re-encode it is wasteful. This method stores the encoded text as-is and records the matching transfer encoding, so the body is correct without a needless round trip. Only the standard reversible encodings, Base64 and quoted-printable, are accepted.

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

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

    // Demonstrates the Mime.SetBodyFromEncoded method, which sets the body from already transfer-
    // encoded text.  The 1st argument is the encoding ("base64" or "quoted-printable") and the 2nd is
    // the encoded text.

    const mime = try chilkat.Mime.init();
    defer mime.deinit();

    mime.setContentType("text/plain");

    // The body is provided already Base64-encoded; Chilkat stores it without re-encoding.
    const base64_body = "SGVsbG8sIHRoaXMgaXMgdGhlIGJvZHku";
    mime.setBodyFromEncoded("base64", base64_body) catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    // The decoded body is the original text.
    const decoded = mime.getBodyDecoded(alloc) catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("{s}\n", .{decoded});
}