TanTan
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29 lines
613 B
Plaintext
29 lines
613 B
Plaintext
'use strict';
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var Buffer = require('buffer').Buffer;
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function hasFrom() {
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// Node versions 5.x below 5.10 seem to have a `from` method
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// However, it doesn't clone Buffers
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// Luckily, it reports as `false` to hasOwnProperty
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return (Buffer.hasOwnProperty('from') && typeof Buffer.from === 'function');
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}
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function cloneBuffer(buf) {
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if (!Buffer.isBuffer(buf)) {
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throw new Error('Can only clone Buffer.');
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}
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if (hasFrom()) {
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return Buffer.from(buf);
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}
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var copy = new Buffer(buf.length);
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buf.copy(copy);
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return copy;
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}
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cloneBuffer.hasFrom = hasFrom;
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module.exports = cloneBuffer;
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