Objective-C

Compress Text from StringBuilder to Gzip (BinData Output)

See more Gzip Examples

This example demonstrates how to use the CompressSb method to compress text stored in a StringBuilder into Gzip format.

The text is first converted to its byte representation using the specified character set (in this case, UTF-8). These bytes are then compressed, and the resulting Gzip data is written to a BinData object in memory.

This approach is useful when working with dynamically generated text that you want to compress without first writing it to a file. The example also shows how the compressed data can optionally be saved to a .gz file.

Objective-C

#import <CkoGzip.h>
#import <CkoStringBuilder.h>
#import <CkoBinData.h>

BOOL success = NO;

// This example demonstrates how to compress text contained in a StringBuilder
// into Gzip format, storing the compressed result in a BinData object.

CkoGzip *gzip = [[CkoGzip alloc] init];
CkoStringBuilder *sb = [[CkoStringBuilder alloc] init];
CkoBinData *bd = [[CkoBinData alloc] init];

// Add some text to the StringBuilder:
[sb Append: @"The quick brown fox jumps over the lazy dog."];

// Compress the text using UTF-8 encoding:
success = [gzip CompressSb: sb charset: @"utf-8" bd: bd];
if (success == NO) {
    NSLog(@"%@",gzip.LastErrorText);
    return;
}

// The BinData now contains the Gzip-compressed bytes.
NSLog(@"%@",@"Compression successful.");
NSLog(@"%@%d",@"Compressed size (bytes): ",[bd.NumBytes intValue]);

// (Optional) Save to a .gz file:
success = [bd WriteFile: @"text.gz"];
if (success == NO) {
    NSLog(@"%@",bd.LastErrorText);
    return;
}

NSLog(@"%@",@"Gzip file written to text.gz");