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27 lines
518 B
JavaScript
27 lines
518 B
JavaScript
"use strict";
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// Note that we take code points as JS numbers, not JS strings.
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function isASCIIDigit(c) {
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return c >= 0x30 && c <= 0x39;
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}
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function isASCIIAlpha(c) {
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return (c >= 0x41 && c <= 0x5A) || (c >= 0x61 && c <= 0x7A);
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}
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function isASCIIAlphanumeric(c) {
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return isASCIIAlpha(c) || isASCIIDigit(c);
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}
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function isASCIIHex(c) {
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return isASCIIDigit(c) || (c >= 0x41 && c <= 0x46) || (c >= 0x61 && c <= 0x66);
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}
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module.exports = {
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isASCIIDigit,
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isASCIIAlpha,
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isASCIIAlphanumeric,
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isASCIIHex
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};
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