41 lines
732 B
Plaintext
41 lines
732 B
Plaintext
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function byteLength (string) {
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return string.length * 2
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}
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function toString (buffer) {
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const len = buffer.byteLength
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let result = ''
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for (let i = 0; i < len - 1; i += 2) {
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result += String.fromCharCode(buffer[i] + (buffer[i + 1] * 256))
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}
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return result
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}
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function write (buffer, string, offset = 0, length = byteLength(string)) {
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const len = Math.min(length, buffer.byteLength - offset)
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let units = len
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for (let i = 0; i < string.length; ++i) {
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if ((units -= 2) < 0) break
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const c = string.charCodeAt(i)
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const hi = c >> 8
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const lo = c % 256
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buffer[offset + i * 2] = lo
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buffer[offset + i * 2 + 1] = hi
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}
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return len
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}
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module.exports = {
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byteLength,
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toString,
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write
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}
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