Zig

Remove a Single Attachment from an Email

Demonstrates the Chilkat Email.DropSingleAttachment method, which removes the attachment at the specified zero-based index. Valid indexes run from 0 through NumAttachments - 1. This example adds two attachments, removes the first, and prints the count before and after.

Background: Attachments are addressed by a zero-based index, so the first is 0, the second 1, and so on. DropSingleAttachment removes just one — use it to prune a specific file (say, an oversized or unwanted attachment) while keeping the rest. Note that after a removal the remaining attachments shift down, so if you are deleting several by index, iterate from the highest index downward to avoid skipping any.

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Zig

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

pub fn main() !void {
    // Demonstrates the DropSingleAttachment method, which removes the attachment at the
    // specified zero-based index.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Drop a single attachment");

    email.addStringAttachment("a.txt", "first attachment") catch {};
    email.addStringAttachment("b.txt", "second attachment") catch {};
    std.debug.print("NumAttachments before = {d}\n", .{email.getNumAttachments()});

    // Remove the attachment at index 0 (the first attachment).
    email.dropSingleAttachment(0) catch {};

    std.debug.print("NumAttachments after = {d}\n", .{email.getNumAttachments()});
}