kiwix/kiwix-js-pwa
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Fix catastrophic backtracking

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Former-commit-id: b6d4ec6664991164989bc4a809cf13c945adb006 [formerly add1f091841cf936e5e5a02ee7e8d99e9d0b6c57 [formerly 2f34f011c2b41a5501dcb6cfc8e3710ba1d21d80]]
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Former-commit-id: b3202981b0ee58f9dc6b35252849e0d4fdb87c54
This commit is contained in:
Jaifroid 2020-12-06 21:47:13 +00:00
parent 36165215d9
commit ae05938785
1 changed files with 17 additions and 15 deletions
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32
www/js/app.js
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@ -3078,23 +3078,25 @@ define(['jquery', 'zimArchiveLoader', 'uiUtil', 'util', 'cache', 'images', 'cook
/[^\\](\$\$?)((?:\\\$|(?!\1)[\s\S])+)\1/.test(htmlArticle) : false;
//Replace all TeX SVGs with MathJax scripts
if (params.useMathJax) {
htmlArticle = htmlArticle.replace(/<img\s+(?=[^>]+?math-fallback-image)[^>]*?alt\s*=\s*(['"])((?:[^"']|(?!\1)[\s\S])+)[^>]+>/ig,
function (p0, p1, math) {
// Remove any rogue ampersands in MathJax due to double escaping (by Wikipedia)
math = math.replace(/&amp;/g, '&');
// Change any mbox commands to fbox (because KaTeX doesn't support mbox)
math = math.replace(/mbox{/g, 'fbox{');
return '<script type="math/tex">' + math + '</script>';
});
// Deal with any newer MathML blocks
htmlArticle = htmlArticle.replace(/(<math\b[^>]+alttext=(["']))((?:[^"']|[\s\S](?!\2))+?)(\2(?:[^<]|<(?!\/math))+(?:[^<]|<(?!img))+)<img\b[^>]+?class=["'][^"']*?mwe-math-fallback-image[^>]+>/ig,
function (_p0, p1, _p2, math, p4) {
// Remove any rogue ampersands in MathJax due to double escaping (by Wikipedia)
math = math.replace(/&amp;/g, '&');
// Change any mbox commands to fbox (because KaTeX doesn't support mbox)
math = math.replace(/mbox{/g, 'fbox{');
return p1 + math + p4 + '<script type="math/tex">' + math + '</script>';
});
function (_p0, p1, _p2, math, p4) {
// Remove any rogue ampersands in MathJax due to double escaping (by Wikipedia)
math = math.replace(/&amp;/g, '&');
// Change any mbox commands to fbox (because KaTeX doesn't support mbox)
math = math.replace(/mbox{/g, 'fbox{');
return p1 + math + p4 + '<script type="math/tex">' + math + '</script>';
});
// Older math blocks
htmlArticle = htmlArticle.replace(/<img\s+(?=[^>]+?math-fallback-image)[^>]*?alt\s*=\s*(['"])((?:[^"']|(?!\1)[\s\S])+)[^>]+>/ig,
function (p0, p1, math) {
// Remove any rogue ampersands in MathJax due to double escaping (by Wikipedia)
math = math.replace(/&amp;/g, '&');
// Change any mbox commands to fbox (because KaTeX doesn't support mbox)
math = math.replace(/mbox{/g, 'fbox{');
return '<script type="math/tex">' + math + '</script>';
});
}
params.containsMathTex = params.useMathJax ? /<script\s+type\s*=\s*['"]\s*math\/tex\s*['"]/i.test(htmlArticle) : false;