Objective-C

Count the MIME Parts of a Given Content-Type

Demonstrates the Chilkat Email.GetNumPartsOfType method, which returns the number of non-multipart MIME parts matching a Content-Type pattern. The first argument is the content-type pattern (an exact type or a wildcard), the second is an inlineOnly flag, and the third is an excludeAttachments flag. This example counts the text/* parts.

Background: This is the companion of GetNthTextPartOfType: it tells you how many parts match a pattern so you can loop over them by index. Wildcards like text/* or image/* make it easy to ask questions such as "how many images does this message contain?" while the boolean flags let you include or exclude attachment parts from the count.

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Objective-C

#import <CkoEmail.h>

//  Demonstrates the GetNumPartsOfType method, which returns the number of non-multipart
//  MIME parts matching a Content-Type pattern.  The first argument is the Content-Type
//  pattern (exact or wildcard), the second is inlineOnly, and the third is excludeAttachments.

CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"GetNumPartsOfType example";

[email SetTextBody: @"This is the plain-text version." contentType: @"text/plain"];
[email AddHtmlAlternativeBody: @"<html><body>This is the HTML version.</body></html>"];

//  Count the non-multipart parts whose content type matches text/*.
int n = [[email GetNumPartsOfType: @"text/*" inlineOnly: NO excludeAttachments: NO] intValue];
NSLog(@"%@%d",@"Number of text/* parts = ",n);