browser/buffer-concat.js

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(function () {
  "use strict";

  function concat(bufs) {
    var buffer, length = 0, index = 0;

    if (!Array.isArray(bufs)) {
      bufs = Array.prototype.slice.call(arguments);
    }
    for (var i=0, l=bufs.length; i<l; i++) {
      buffer = bufs[i];
      if (!Buffer.isBuffer(buffer)) {
        buffer = bufs[i] = new Buffer(buffer);
      }
      length += buffer.length;
    }
    buffer = new Buffer(length);

    bufs.forEach(function (buf, i) {
      buf = bufs[i];
      buf.copy(buffer, index, 0, buf.length);
      index += buf.length;
      delete bufs[i];
    });

    return buffer;
  }
  Buffer.concat = concat;

}());