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var PassThrough = require('stream').PassThrough;
var objectAssign = require('object-assign');
module.exports = function (opts) {
opts = objectAssign({}, opts);
var array = opts.array;
var encoding = opts.encoding;
var buffer = encoding === 'buffer';
var objectMode = false;
if (array) {
objectMode = !(encoding || buffer);
} else {
encoding = encoding || 'utf8';
}
if (buffer) {
encoding = null;
}
var len = 0;
var ret = [];
var stream = new PassThrough({objectMode: objectMode});
if (encoding) {
stream.setEncoding(encoding);
}
stream.on('data', function (chunk) {
ret.push(chunk);
if (objectMode) {
len = ret.length;
} else {
len += chunk.length;
}
});
stream.getBufferedValue = function () {
if (array) {
return ret;
}
return buffer ? Buffer.concat(ret, len) : ret.join('');
};
stream.getBufferedLength = function () {
return len;
};
return stream;
};
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