Objective-C

Imap.GetMailSize vs Email.Size

Shows how to get the total size of an email, as well as the sizes of the attachments. This can be done when either full-emails or headers-only are downloaded. Objective-C

#import <CkoImap.h>
#import <CkoMessageSet.h>
#import <CkoEmailBundle.h>
#import <CkoEmail.h>

BOOL success = NO;

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

CkoImap *imap = [[CkoImap alloc] init];

//  Connect to an IMAP server.
//  Use TLS
imap.Ssl = YES;
imap.Port = [NSNumber numberWithInt:993];
success = [imap Connect: @"imap.example.com"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

//  Login
success = [imap Login: @"****" password: @"****"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

//  Select an IMAP mailbox
success = [imap SelectMailbox: @"Inbox"];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

//  Get the message IDs of all the emails in the mailbox
//  We can choose to fetch UIDs or sequence numbers.
BOOL fetchUids = YES;
CkoMessageSet *messageSet = [[CkoMessageSet alloc] init];
success = [imap QueryMbx: @"ALL" bUid: fetchUids msgSet: messageSet];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

//  When downloading headers, each email object contains
//  (obviously) the headers, but the body will be missing.
//  Attachments will not be included.  However, it is
//  possible to get information about the attachments
//  as well as the complete size of the email.
CkoEmailBundle *bundle = [[CkoEmailBundle alloc] init];
BOOL headersOnly = YES;
success = [imap FetchMsgSet: headersOnly msgSet: messageSet bundle: bundle];
if (success == NO) {
    NSLog(@"%@",imap.LastErrorText);
    return;
}

//  Loop over the email objects and display information about each:
CkoEmail *email = [[CkoEmail alloc] init];
int i = 0;
int j = 0;
int numEmails = [bundle.MessageCount intValue];
while (i < numEmails) {
    [bundle EmailAt: [NSNumber numberWithInt: i] email: email];

    //  Display the From and Subject
    NSLog(@"%@",email.From);
    NSLog(@"%@",email.Subject);

    //  Display the recipients:
    j = 0;
    while (j < [email.NumTo intValue]) {
        NSLog(@"%@%@%@%@",@"TO: ",[email GetToName: [NSNumber numberWithInt: j]],@", ",[email GetToAddr: [NSNumber numberWithInt: j]]);
        j = j + 1;
    }

    j = 0;
    while (j < [email.NumCC intValue]) {
        NSLog(@"%@%@%@%@",@"CC: ",[email GetCcName: [NSNumber numberWithInt: j]],@", ",[email GetCcAddr: [NSNumber numberWithInt: j]]);
        j = j + 1;
    }

    //  Show the total size of the email, including body and attachments:
    NSLog(@"%d",[email.Size intValue]);

    //  When a full email is downloaded, we would use the
    //  email.NumAttachments property in conjunction with the
    //  email.GetMailAttach* methods.
    //  However, when an email object contains only the header,
    //  we need to access the attachment info differently:
    int numAttach = [[imap GetMailNumAttach: email] intValue];
    j = 0;
    while (j < numAttach) {
        NSLog(@"%@",[imap GetMailAttachFilename: email attachIndex: [NSNumber numberWithInt: j]]);
        int attachSize = [[imap GetMailAttachSize: email attachIndex: [NSNumber numberWithInt: j]] intValue];
        NSLog(@"%@%d%@",@"    size = ",attachSize,@" bytes");
        j = j + 1;
    }

    NSLog(@"%@",@"--");

    i = i + 1;
}

//  Disconnect from the IMAP server.
success = [imap Disconnect];