Zig

Add a Related Item from BinData by Content-Location

Demonstrates the Chilkat Email.AddRelatedBd2 method, which adds a related item using the binary data in a BinData object, addressed by Content-Location. The second argument specifies the filename, path, or URL used by the corresponding HTML reference. This example embeds an image referenced as logo.png.

Background: This is the binary counterpart of AddRelatedString2 and the Content-Location sibling of AddRelatedBd. Instead of a generated cid: reference, the HTML keeps an ordinary src="logo.png" and the related part is matched to it by name — convenient when turning an existing web page into an email so its original relative URLs keep working.

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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 AddRelatedBd2 method, which adds a related item using the binary data in
    // a BinData object, addressed by Content-Location.  The second argument specifies the filename/path/URL
    // used by the corresponding HTML reference.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("Related image from BinData (Content-Location)");

    // The HTML references the image by the same name used as the Content-Location.
    email.setHtmlBody("<html><body><img src=\"logo.png\"/></body></html>");

    // Load the image data from a file into a BinData object.
    const bd_image = try chilkat.BinData.init();
    defer bd_image.deinit();
    bd_image.loadFile("qa_data/images/logo.png") catch {
        std.debug.print("{s}\n", .{try bd_image.getLastErrorText(alloc)});
        return;
    };

    // Add the image as a related item addressed by Content-Location "logo.png".
    email.addRelatedBd2(bd_image, "logo.png") catch {
        std.debug.print("{s}\n", .{try email.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("NumRelatedItems = {d}\n", .{email.getNumRelatedItems()});

    // Note: The path "qa_data/images/logo.png" is a relative local filesystem path,
    // relative to the current working directory of the running application.
}