rochars / byte-data

let toBytes = require('./src/to-bytes');

let fromBytes = require('./src/from-bytes');

let bitPacker = require('./src/bit-packer');

/**

 * Find and return the start offset of some string.

 * @param {!Array<number>|Uint8Array} bytes Array of bytes.

 * @param {string} chunk Some string to look for.

 * @return {number} The start offset of the first occurrence found.

 */

function findString(bytes, chunk) {

    let found = "";

    for (let i = 0; i < bytes.length; i++) {

        found = fromBytes.fromBytes(bytes.slice(i, i + chunk.length),

            8, {"char": true});

        if (found == chunk) {

            return i;

        }

    }

    return -1;

}

module.exports.packBooleans = bitPacker.packBooleans;

module.exports.unpackBooleans = bitPacker.unpackBooleans;

module.exports.packCrumbs = bitPacker.packCrumbs;

module.exports.unpackCrumbs = bitPacker.unpackCrumbs;

module.exports.packNibbles = bitPacker.packNibbles;

module.exports.unpackNibbles = bitPacker.unpackNibbles;

module.exports.findString = findString;

module.exports.toBytes = toBytes.toBytes;

module.exports.fromBytes = fromBytes.fromBytes;