mirror of
https://github.com/gorhill/uMatrix.git
synced 2024-05-04 04:13:55 +12:00
9b292304d3
Notably: - Import logger improvements from uBO - Import CNAME uncloaking from uBO - Import more improvements from uBO - Make use of modern JS features This should un-stall further development of uMatrix.
269 lines
9.1 KiB
JavaScript
269 lines
9.1 KiB
JavaScript
/*******************************************************************************
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µMatrix - a Chromium browser extension to black/white list requests.
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Copyright (C) 2014 Raymond Hill
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see {http://www.gnu.org/licenses/}.
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Home: https://github.com/gorhill/uMatrix
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*/
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'use strict';
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/******************************************************************************/
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// This file should always be included at the end of the `body` tag, so as
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// to ensure all i18n targets are already loaded.
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{
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// >>>>> start of local scope
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/******************************************************************************/
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// https://github.com/gorhill/uBlock/issues/2084
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// Anything else than <a>, <b>, <code>, <em>, <i>, <input>, and <span> will
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// be rendered as plain text.
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// For <input>, only the type attribute is allowed.
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// For <a>, only href attribute must be present, and it MUST starts with
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// `https://`, and includes no single- or double-quotes.
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// No HTML entities are allowed, there is code to handle existing HTML
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// entities already present in translation files until they are all gone.
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const reSafeTags = /^([\s\S]*?)<(b|code|em|i|span)>(.+?)<\/\2>([\s\S]*)$/;
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const reSafeLink = /^([\s\S]*?)<(a href=['"]https:\/\/[^'" <>]+['"])>(.+?)<\/a>([\s\S]*)$/;
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const reLink = /^a href=(['"])(https:\/\/[^'"]+)\1$/;
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const safeTextToTagNode = function(text) {
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if ( text.lastIndexOf('a ', 0) === 0 ) {
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const matches = reLink.exec(text);
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if ( matches === null ) { return null; }
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const node = document.createElement('a');
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node.setAttribute('href', matches[2]);
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return node;
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}
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// Firefox extension validator warns if using a variable as argument for
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// document.createElement().
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switch ( text ) {
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case 'b':
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return document.createElement('b');
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case 'blockquote':
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return document.createElement('blockquote');
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case 'code':
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return document.createElement('code');
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case 'em':
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return document.createElement('em');
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case 'i':
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return document.createElement('i');
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case 'kbd':
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return document.createElement('kbd');
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case 'span':
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return document.createElement('span');
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case 'sup':
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return document.createElement('sup');
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default:
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break;
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}
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};
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const safeTextToTextNode = (( ) => {
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const entities = new Map([
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// TODO: Remove quote entities once no longer present in translation
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// files. Other entities must stay.
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[ '“', '“' ],
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[ '”', '”' ],
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[ '‘', '‘' ],
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[ '’', '’' ],
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[ '<', '<' ],
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[ '>', '>' ],
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]);
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const decodeEntities = match => {
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return entities.get(match) || match;
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};
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return function(text) {
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if ( text.indexOf('&') !== -1 ) {
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text = text.replace(/&[a-z]+;/g, decodeEntities);
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}
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return document.createTextNode(text);
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};
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})();
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const safeTextToDOM = function(text, parent) {
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if ( text === '' ) { return; }
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// Fast path (most common).
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if ( text.indexOf('<') === -1 ) {
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parent.appendChild(safeTextToTextNode(text));
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return;
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}
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// Slow path.
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// `<p>` no longer allowed. Code below can be removed once all <p>'s are
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// gone from translation files.
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text = text.replace(/^<p>|<\/p>/g, '')
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.replace(/<p>/g, '\n\n');
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// Parse allowed HTML tags.
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let matches = reSafeTags.exec(text);
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if ( matches === null ) {
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matches = reSafeLink.exec(text);
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if ( matches === null ) {
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parent.appendChild(safeTextToTextNode(text));
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return;
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}
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}
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const fragment = document.createDocumentFragment();
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safeTextToDOM(matches[1], fragment);
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let node = safeTextToTagNode(matches[2]);
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safeTextToDOM(matches[3], node);
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fragment.appendChild(node);
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safeTextToDOM(matches[4], fragment);
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parent.appendChild(fragment);
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};
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/******************************************************************************/
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vAPI.i18n.safeTemplateToDOM = function(id, dict, parent) {
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if ( parent === undefined ) {
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parent = document.createDocumentFragment();
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}
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let textin = vAPI.i18n(id);
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if ( textin === '' ) {
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return parent;
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}
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if ( textin.indexOf('{{') === -1 ) {
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safeTextToDOM(textin, parent);
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return parent;
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}
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const re = /\{\{\w+\}\}/g;
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let textout = '';
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for (;;) {
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let match = re.exec(textin);
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if ( match === null ) {
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textout += textin;
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break;
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}
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textout += textin.slice(0, match.index);
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let prop = match[0].slice(2, -2);
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if ( dict.hasOwnProperty(prop) ) {
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textout += dict[prop].replace(/</g, '<')
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.replace(/>/g, '>');
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} else {
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textout += prop;
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}
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textin = textin.slice(re.lastIndex);
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}
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safeTextToDOM(textout, parent);
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return parent;
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};
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/******************************************************************************/
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// Helper to deal with the i18n'ing of HTML files.
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vAPI.i18n.render = function(context) {
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const docu = document;
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const root = context || docu;
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for ( const elem of root.querySelectorAll('[data-i18n]') ) {
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let text = vAPI.i18n(elem.getAttribute('data-i18n'));
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if ( !text ) { continue; }
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if ( text.indexOf('{{') === -1 ) {
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safeTextToDOM(text, elem);
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continue;
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}
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// Handle selector-based placeholders: these placeholders tell where
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// existing child DOM element are to be positioned relative to the
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// localized text nodes.
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const parts = text.split(/(\{\{[^}]+\}\})/);
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const fragment = document.createDocumentFragment();
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let textBefore = '';
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for ( let part of parts ) {
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if ( part === '' ) { continue; }
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if ( part.startsWith('{{') && part.endsWith('}}') ) {
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// TODO: remove detection of ':' once it no longer appears
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// in translation files.
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const pos = part.indexOf(':');
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if ( pos !== -1 ) {
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part = part.slice(0, pos) + part.slice(-2);
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}
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const node = elem.querySelector(part.slice(2, -2));
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if ( node !== null ) {
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safeTextToDOM(textBefore, fragment);
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fragment.appendChild(node);
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textBefore = '';
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continue;
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}
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}
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textBefore += part;
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}
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if ( textBefore !== '' ) {
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safeTextToDOM(textBefore, fragment);
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}
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elem.appendChild(fragment);
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}
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for ( const elem of root.querySelectorAll('[data-i18n-title]') ) {
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const text = vAPI.i18n(elem.getAttribute('data-i18n-title'));
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if ( !text ) { continue; }
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elem.setAttribute('title', text);
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}
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for ( const elem of root.querySelectorAll('[placeholder]') ) {
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elem.setAttribute(
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'placeholder',
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vAPI.i18n(elem.getAttribute('placeholder'))
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);
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}
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for ( const elem of root.querySelectorAll('[data-i18n-tip]') ) {
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const text = vAPI.i18n(elem.getAttribute('data-i18n-tip'))
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.replace(/<br>/g, '\n')
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.replace(/\n{3,}/g, '\n\n');
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elem.setAttribute('data-tip', text);
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if ( elem.getAttribute('aria-label') === 'data-tip' ) {
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elem.setAttribute('aria-label', text);
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}
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}
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};
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vAPI.i18n.render();
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/******************************************************************************/
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vAPI.i18n.renderElapsedTimeToString = function(tstamp) {
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let value = (Date.now() - tstamp) / 60000;
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if ( value < 2 ) {
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return vAPI.i18n('elapsedOneMinuteAgo');
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}
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if ( value < 60 ) {
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return vAPI.i18n('elapsedManyMinutesAgo').replace('{{value}}', Math.floor(value).toLocaleString());
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}
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value /= 60;
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if ( value < 2 ) {
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return vAPI.i18n('elapsedOneHourAgo');
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}
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if ( value < 24 ) {
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return vAPI.i18n('elapsedManyHoursAgo').replace('{{value}}', Math.floor(value).toLocaleString());
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}
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value /= 24;
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if ( value < 2 ) {
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return vAPI.i18n('elapsedOneDayAgo');
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}
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return vAPI.i18n('elapsedManyDaysAgo').replace('{{value}}', Math.floor(value).toLocaleString());
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};
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/******************************************************************************/
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// <<<<< end of local scope
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}
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/******************************************************************************/
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