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21 lines
519 B
21 lines
519 B
6 years ago
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'use strict';
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var htmlCommentRegex = require('html-comment-regex');
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function isBinary(buf) {
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var isBuf = Buffer.isBuffer(buf);
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for (var i = 0; i < 24; i++) {
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var 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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module.exports = function (buf) {
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return !isBinary(buf) && /^\s*(?:<\?xml[^>]*>\s*)?(?:<!doctype svg[^>]*\s*(?:<![^>]*>)*[^>]*>\s*)?<svg[^>]*>[^]*<\/svg>\s*$/i.test(buf.toString().replace(htmlCommentRegex, ''));
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};
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