Zig

Serialize MIME to BinData

Demonstrates the Chilkat Mime.GetMimeBd method, which serializes the complete MIME entity and appends its bytes to a BinData. The only argument is the BinData; existing bytes are preserved.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the byte-exact serializer — the right choice when the MIME carries binary content such as an image or an 8-bit-encoded part, where routing the output through a text string could corrupt it. The result is a faithful byte stream you can write to a file, transmit, or hash. It pairs with LoadMimeBd for lossless round-tripping of binary MIME.

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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.GetMimeBd method, which serializes the complete MIME entity and appends
    // its bytes to a BinData.  The only argument is the BinData.  Use this when arbitrary binary body
    // bytes must not pass through a text string.

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

    mime.setBodyFromFile("qa_data/photo.jpg") catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    // Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
    const bd = try chilkat.BinData.init();
    defer bd.deinit();
    mime.getMimeBd(bd) catch {
        std.debug.print("{s}\n", .{try mime.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("Serialized {d} bytes.\n", .{bd.getNumBytes()});
}