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20 lines
567 B
20 lines
567 B
'use strict';
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const htmlCommentRegex = require('html-comment-regex');
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function isBinary(buf) {
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const isBuf = Buffer.isBuffer(buf);
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for (let i = 0; i < 24; i++) {
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const charCode = isBuf ? buf[i] : buf.charCodeAt(i);
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if (charCode === 65533 || charCode <= 8) {
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return true;
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}
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}
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return false;
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}
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const regex = /^\s*(?:<\?xml[^>]*>\s*)?(?:<!doctype svg[^>]*\s*(?:\[?(?:\s*<![^>]*>\s*)*\]?)*[^>]*>\s*)?<svg[^>]*>[^]*<\/svg>\s*$/i;
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module.exports = input => Boolean(input) && !isBinary(input) && regex.test(input.toString().replace(htmlCommentRegex, ''));
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