Zig

Get the Content-Type of a Related Item

Demonstrates the Chilkat Email.GetRelatedContentType method, which returns the Content-Type of the Nth related content item in an email. The index is zero-based. This example adds a related style sheet and reads its content type.

Background: Each related item declares a Content-Type — image/png for an inline image, text/css for a style sheet, and so on — that tells the rendering client how to use it. Reading the content type lets a program enumerate a message's embedded resources and act on them by kind, for example collecting every inline image while ignoring the style sheets.

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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 GetRelatedContentType method, which returns the Content-Type of the Nth
    // related content item in an email.  The index is zero-based.

    const email = try chilkat.Email.init();
    defer email.deinit();
    email.setSubject("GetRelatedContentType example");

    // The HTML references the style sheet by name (Content-Location).
    email.setHtmlBody("<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>");

    // Add the related style sheet (index 0).
    email.addRelatedString2("styles.css", "body { color: navy; }", "utf-8");

    // Read the Content-Type of the first related item (index 0).
    const ct = try email.getRelatedContentType(alloc, 0);
    std.debug.print("Related item 0 Content-Type: {s}\n", .{ct});
}