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Fetch an IMAP Message as MIME Text

Demonstrates the Chilkat Imap.FetchSingleAsMime method, which downloads one message and returns its MIME source as a string. If the second argument (bUid) is true, the first argument is a UID; otherwise it is a sequence number. This example fetches message 1's raw MIME.

Background: Sometimes you want the message exactly as it exists on the server — the raw MIME — rather than a parsed Email object. That is what you save to a .eml file, feed to another parser, or archive verbatim. This method returns the MIME as text; for messages that may contain binary data, the BinData variant FetchSingleBd preserves the exact bytes.

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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 Imap.FetchSingleAsMime method, which downloads one message and returns
    // its MIME source as a string.  If the 2nd argument (bUid) is true, the 1st argument is a
    // UID; otherwise it is a sequence number.

    const imap = try chilkat.Imap.init();
    defer imap.deinit();

    imap.setSsl(true);
    imap.setPort(993);

    imap.connect("imap.example.com") catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    imap.login("user@example.com", "myPassword") catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    imap.selectMailbox("Inbox") catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    // Download message sequence number 1 and return its raw MIME.  bUid = false.
    const mime = imap.fetchSingleAsMime(alloc, 1, false) catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    std.debug.print("{s}\n", .{mime});

    imap.disconnect() catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };
}