Add experimental href-from-text scriptlet · gorhill/uBlock@e123256 (original) (raw)

`@@ -1842,6 +1842,81 @@

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/// href-from-text.js

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(function() {

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let selector = '{{1}}';

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if ( selector === '{{1}}' ) { selector = ''; }

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if ( selector === '' ) { return; }

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const sanitizeCopycats = (href, text) => {

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let elems = [];

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try {

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`` +

elems = document.querySelectorAll(a[href="${href}");

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}

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catch(ex) {

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}

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for ( const elem of elems ) {

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elem.setAttribute('href', text);

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}

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};

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const sanitize = ( ) => {

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let elems = [];

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try {

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elems = document.querySelectorAll(selector);

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}

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catch(ex) {

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return false;

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}

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for ( const elem of elems ) {

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if ( elem.localName !== 'a' ) { continue; }

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if ( elem.hasAttribute('href') === false ) { continue; }

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const href = elem.getAttribute('href');

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const text = elem.textContent

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.replace(/^[^\x21-\x7e]+/, '') // remove leading invalid characters

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.replace(/[^\x21-\x7e]+$/, '') // remove trailing invalid characters

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;

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if ( /^https://./.test(text) === false ) { continue; }

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if ( /[^\x21-\x7e]/.test(text) ) { continue; }

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if ( href === text ) { continue; }

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elem.setAttribute('href', text);

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sanitizeCopycats(href, text);

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}

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return true;

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};

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let observer, timer;

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const onDomChanged = mutations => {

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if ( timer !== undefined ) { return; }

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let shouldSanitize = false;

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for ( const mutation of mutations ) {

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if ( mutation.addedNodes.length === 0 ) { continue; }

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for ( const node of mutation.addedNodes ) {

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if ( node.nodeType !== 1 ) { continue; }

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shouldSanitize = true;

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break;

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}

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if ( shouldSanitize ) { break; }

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}

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if ( shouldSanitize === false ) { return; }

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timer = self.requestAnimationFrame(( ) => {

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timer = undefined;

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sanitize();

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});

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};

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const start = ( ) => {

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if ( sanitize() === false ) { return; }

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observer = new MutationObserver(onDomChanged);

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observer.observe(document.body, {

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subtree: true,

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childList: true,

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});

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};

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if ( document.readyState === 'loading' ) {

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document.addEventListener('DOMContentLoaded', start, { once: true });

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} else {

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start();

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}

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})();

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+

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+

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`// These lines below are skipped by the resource parser.

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`// <<<< end of private namespace

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`})();