Objective-C

Save a Related Item to Disk

Demonstrates the Chilkat Email.SaveRelatedItem method, which saves the related item at a given zero-based index to a directory. If the directory or any of its components do not exist, Chilkat creates them. This example adds a related style sheet and saves it.

Background: Related items are the inline resources (images, style sheets) an HTML email carries in its multipart/related enclosure. SaveRelatedItem writes one of them out as a file — a building block for tasks like extracting a specific embedded image, or manually unpacking a message when you want finer control than the all-in-one UnpackHtml / AspUnpack methods provide.

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Objective-C

#import <CkoEmail.h>

BOOL success = NO;

//  Demonstrates the SaveRelatedItem method, which saves the related item at a given
//  zero-based index to a directory.  If the directory (or any of its components) does not
//  exist, Chilkat creates it.

CkoEmail *email = [[CkoEmail alloc] init];
email.Subject = @"Save a related item";

//  Set an HTML body that references a related style sheet by name.
[email SetHtmlBody: @"<html><head><link rel=\"stylesheet\" href=\"styles.css\"/></head><body>Styled.</body></html>"];
[email AddRelatedString2: @"styles.css" str: @"body { color: navy; }" charset: @"utf-8"];

//  Save the related item at index 0 into the specified directory.
success = [email SaveRelatedItem: [NSNumber numberWithInt: 0] directory: @"qa_output/related"];
if (success == NO) {
    NSLog(@"%@",email.LastErrorText);
    return true;
}

NSLog(@"%@",@"Saved related item 0.");

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