Node.js

Demonstrate Binary Data Encoding Methods

Demonstrates binary data encoding methods.

Note: This example requires Chilkat v9.5.0.64 or later.

Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var binData = new chilkat.BinData();

    //  Append 10 bytes: 00, 01, 02, 03, 04, 05, 06, 07, 08, 09
    binData.AppendEncoded("00010203040506070809","hex");

    //  Show that binData contains 10 bytes.
    console.log("num bytes = " + binData.NumBytes);

    //  Get as base64
    console.log("base64: " + binData.GetEncoded("base64"));

    //  Get a chunk of the binary data.
    //  The 1st byte is at index 0.
    //  The output should be "02030405"
    var offset = 2;
    var numBytes = 4;
    console.log("chunk: " + binData.GetEncodedChunk(offset,numBytes,"hex"));

    //  Copy the bytes to a StringBuilder using the base64url encoding
    var sb = new chilkat.StringBuilder();
    binData.GetEncodedSb("base64url",sb);
    console.log("base64url: " + sb.GetAsString());

    //  Remove a chunk from the binary data
    offset = 2;
    numBytes = 4;
    binData.RemoveChunk(offset,numBytes);
    //  The bytes remaining are 00,01,06,07,08,and 09
    console.log("after removing chunk: " + binData.GetEncoded("hex"));

}

chilkatExample();