Objective-C

Serialize MIME to BinData

Demonstrates the Chilkat Mime.GetMimeBd method, which serializes the complete MIME entity and appends its bytes to a BinData. The only argument is the BinData; existing bytes are preserved.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the byte-exact serializer — the right choice when the MIME carries binary content such as an image or an 8-bit-encoded part, where routing the output through a text string could corrupt it. The result is a faithful byte stream you can write to a file, transmit, or hash. It pairs with LoadMimeBd for lossless round-tripping of binary MIME.

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Objective-C

#import <CkoMime.h>
#import <CkoBinData.h>

BOOL success = NO;

//  Demonstrates the Mime.GetMimeBd method, which serializes the complete MIME entity and appends
//  its bytes to a BinData.  The only argument is the BinData.  Use this when arbitrary binary body
//  bytes must not pass through a text string.

CkoMime *mime = [[CkoMime alloc] init];

success = [mime SetBodyFromFile: @"qa_data/photo.jpg"];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

//  Append the serialized MIME bytes to a BinData.  Existing bytes are preserved.
CkoBinData *bd = [[CkoBinData alloc] init];
success = [mime GetMimeBd: bd];
if (success == NO) {
    NSLog(@"%@",mime.LastErrorText);
    return;
}

NSLog(@"%@%d%@",@"Serialized ",[bd.NumBytes intValue],@" bytes.");