Objective-C

Repair MIME Formatting Problems in an Email

Demonstrates the Chilkat Email.ApplyFixups method, which repairs selected MIME-formatting problems commonly found in email produced by other software. The argument is a comma-separated list of fixup keywords. The currently defined keyword is FixRelated, which relocates HTML-related items (such as embedded images) into the appropriate MIME structure so they are not incorrectly presented as ordinary attachments. This example loads an email and applies that fixup.

Background: Not every mail program builds strictly correct MIME. A common defect is placing an inline image as a loose attachment instead of nesting it in a multipart/related enclosure, which makes it show up as a downloadable file rather than displaying in the HTML. ApplyFixups corrects such structural issues so the message renders as intended.

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Objective-C

#import <CkoEmail.h>

BOOL success = NO;

//  Demonstrates the ApplyFixups method, which repairs selected MIME-formatting problems
//  commonly found in email produced by other software.  The argument is a comma-separated
//  list of fixup keywords.

CkoEmail *email = [[CkoEmail alloc] init];

success = [email LoadEml: @"qa_data/eml/message.eml"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

//  Apply the "FixRelated" fixup, which relocates HTML-related items (such as embedded
//  images) into the proper MIME structure so they are not shown as ordinary attachments.
success = [email ApplyFixups: @"FixRelated"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

NSLog(@"%@",@"Applied MIME fixups.");

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