Zig

Set the Charset of an Attachment

Demonstrates the Chilkat Email.SetAttachmentCharset method, which sets the charset parameter of the Content-Type header field for the attachment at a given zero-based index. This example adds a text attachment and sets its charset to utf-8.

Background: For a text attachment, the charset parameter tells the receiving client which character encoding the bytes use, so accented or non-Latin text renders correctly. Setting it explicitly (typically utf-8) removes ambiguity when the attachment contains non-ASCII content — without it, a client may guess wrong and display garbled characters.

Chilkat Zig Downloads

Download Chilkat for Zig

Zig

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

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

    // Demonstrates the SetAttachmentCharset method, which sets the charset parameter of the
    // Content-Type header field for the attachment at the given zero-based index.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Set attachment charset");

    email.addStringAttachment("notes.txt", "Some notes.") catch {};

    // Set the charset of the first attachment (index 0) to utf-8.
    email.setAttachmentCharset(0, "utf-8") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    // The attachment's Content-Type now includes charset="utf-8".
    std.debug.print("{s}\n", .{try email.getMime(alloc)});
}