Iterate Email Headers

Demonstrates how to iterate over the email header fields.

Download: Chilkat Cocoa Objective-C Libraries

NSMutableString *strOutput = [NSMutableString stringWithCapacity:1000];

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

//  First, load an email from a file.
//  Note: an email object may be loaded from a file, or
//  downloaded directly from a POP3 or IMAP server...
BOOL success;
success = [email LoadEml: @"testReceivedHdrs.eml"];
if (success != YES) {
    [strOutput appendString: email.LastErrorText];
    [strOutput appendString: @"\n"];
    self.mainTextField.stringValue = strOutput;
    return;
}

//  How many header fields?
int n;
n = [email.NumHeaderFields intValue];
if (n > 0) {

    //  Display the name and value of each header:
    int i;
    NSString *name;
    NSString *value;
    for (i = 0; i <= n - 1; i++) {
        name = [email GetHeaderFieldName: [NSNumber numberWithInt: i]];
        value = [email GetHeaderFieldValue: [NSNumber numberWithInt: i]];
        [strOutput appendString:[NSString stringWithFormat: @"%d\n",i]];
        [strOutput appendString: name];
        [strOutput appendString: @"\n"];
        [strOutput appendString: value];
        [strOutput appendString: @"\n"];

    }

}


self.mainTextField.stringValue = strOutput;