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