Zig Requires Chilkat v11.0.0+

Search IMAP Mailbox for Email Matching Criteria

Searching an IMAP mailbox for messages that match search criteria. Zig

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

pub fn main(init: std.process.Init) !void {
    const alloc = init.arena.allocator();

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

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

    // Connect to an IMAP server.
    // Use TLS
    imap.setSsl(true);
    imap.setPort(993);
    imap.connect("imap.example.com") catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    // Login
    imap.login("myLogin", "myPassword") catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

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

    // We can choose to fetch UIDs or sequence numbers.
    const fetch_uids = true;

    // Here are examples of different search criteria:

    // Return all messages.

    // Search for already-answered emails.

    // Search for messages on a specific date.
    // The date string is DD-Month-YYYY where Month is
    // Jan, Feb, Mar, Apr, May, Jun, Jul, Aug, Sep, Oct, Nov, or Dec.

    // Search for messages between two dates.  SENTBEFORE
    // finds emails sent before a date, and SENTSINCE finds
    // email sent on or after a date.  The "AND" operation
    // is implied by joining criteria, separated by spaces.

    // Another example of AND: find all unanswered emails
    // sent after 04-Mar-2007 with "Problem" in the subject:
    _ = "UNANSWERED SENTSINCE 04-Mar-2007 Subject \"Problem\"";

    // Find messages with a specific string in the body:
    _ = "BODY \"problem solved\"";

    // Using OR.  The syntax is OR <criteria1> <criteria2>.
    // The "OR" comes first, followed by each criteria.
    // For example, to match all emails with "Help" or "Question" in the subject.
    // You'll notice that literal strings may be quoted or unquoted.
    // If a literal contains SPACE characters, quote it:
    const or_search = "OR SUBJECT Help SUBJECT Question";

    // ----------------------------------------------
    // Strings are case-insensitive when searching....
    // ----------------------------------------------

    // Find all emails sent from yahoo.com addresses:
    // Find all emails sent from anyone with "John" in their name:

    // Find emails with the RECENT flag set:

    // Find emails that don't have the recent flag set:
    // This is synonymous with "OLD":

    // Find all emails marked for deletion:

    // Find all emails having a specified header field with a value
    // containing a substring:

    // Find any emails having a specific header field.  If the
    // 2nd argument to the "HEADER" criteria is an empty string,
    // any email having the header field is returned regardless
    // of the header field's content.
    // Find any emails with a DomainKey-Signature field:
    _ = "HEADER DomainKey-Signature \"\"";

    // Find NEW emails: these are emails that have the RECENT flag
    // set, but not the SEEN flag:

    // Find emails larger than a certain number of bytes:

    // Find emails marked as seen or not already seen:

    // Find emails having a given substring in the TO header field:
    // A more long-winded way to do the same thing:

    // Find emails smaller than a size in bytes:

    // Find emails that have a substring anywhere in the header
    // or body:
    _ = "TEXT \"Zip Component\"";

    // Pass any of the above strings here to test a search:
    const message_set = try chilkat.MessageSet.init();
    defer message_set.deinit();
    imap.queryMbx(or_search, fetch_uids, message_set) catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    // Fetch the email headers into a bundle object:
    const bundle = try chilkat.EmailBundle.init();
    defer bundle.deinit();
    const headers_only = true;
    imap.fetchMsgSet(headers_only, message_set, bundle) catch {
        std.debug.print("{s}\n", .{try imap.getLastErrorText(alloc)});
        return;
    };

    // Display the Subject and From of each email.
    const email = try chilkat.Email.init();
    defer email.deinit();
    var i: i32 = 0;
    while (i < bundle.getMessageCount()) {
        bundle.emailAt(i, email) catch {};

        std.debug.print("{s}\n", .{try email.getHeaderField(alloc, "Date")});
        std.debug.print("{s}\n", .{try email.getSubject(alloc)});
        std.debug.print("{s}\n", .{try email.getFrom(alloc)});
        std.debug.print("--\n", .{});

        i = i + 1;
    }

    // Disconnect from the IMAP server.
    try imap.disconnect();
}