Node.js

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.

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

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

    var gzip = new chilkat.Gzip();
    var sb = new chilkat.StringBuilder();
    var bd = new chilkat.BinData();

    // 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,"utf-8",bd);
    if (success == false) {
        console.log(gzip.LastErrorText);
        return;
    }

    // The BinData now contains the Gzip-compressed bytes.
    console.log("Compression successful.");
    console.log("Compressed size (bytes): " + bd.NumBytes);

    // (Optional) Save to a .gz file:
    success = bd.WriteFile("text.gz");
    if (success == false) {
        console.log(bd.LastErrorText);
        return;
    }

    console.log("Gzip file written to text.gz");

}

chilkatExample();