mirror of https://github.com/TriliumNext/Notes
Update Katex from 0.16.0 to 0.16.9
Luis González
parent
e9ece21d20
commit
b17848609b
@ -1 +1 @@
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!function(e,t){"object"==typeof exports&&"object"==typeof module?module.exports=t(require("katex")):"function"==typeof define&&define.amd?define(["katex"],t):"object"==typeof exports?exports.renderMathInElement=t(require("katex")):e.renderMathInElement=t(e.katex)}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={771:function(t){t.exports=e}},r={};function n(e){var i=r[e];if(void 0!==i)return i.exports;var a=r[e]={exports:{}};return t[e](a,a.exports,n),a.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var i={};return function(){n.d(i,{default:function(){return s}});var e=n(771),t=n.n(e),r=function(e,t,r){for(var n=r,i=0,a=e.length;n<t.length;){var o=t[n];if(i<=0&&t.slice(n,n+a)===e)return n;"\\"===o?n++:"{"===o?i++:"}"===o&&i--,n++}return-1},a=/^\\begin{/,o=function(e,t){for(var n,i=[],o=new RegExp("("+t.map((function(e){return e.left.replace(/[-/\\^$*+?.()|[\]{}]/g,"\\$&")})).join("|")+")");-1!==(n=e.search(o));){n>0&&(i.push({type:"text",data:e.slice(0,n)}),e=e.slice(n));var l=t.findIndex((function(t){return e.startsWith(t.left)}));if(-1===(n=r(t[l].right,e,t[l].left.length)))break;var d=e.slice(0,n+t[l].right.length),s=a.test(d)?d:e.slice(t[l].left.length,n);i.push({type:"math",data:s,rawData:d,display:t[l].display}),e=e.slice(n+t[l].right.length)}return""!==e&&i.push({type:"text",data:e}),i},l=function(e,r){var n=o(e,r.delimiters);if(1===n.length&&"text"===n[0].type)return null;for(var i=document.createDocumentFragment(),a=0;a<n.length;a++)if("text"===n[a].type)i.appendChild(document.createTextNode(n[a].data));else{var l=document.createElement("span"),d=n[a].data;r.displayMode=n[a].display;try{r.preProcess&&(d=r.preProcess(d)),t().render(d,l,r)}catch(e){if(!(e instanceof t().ParseError))throw e;r.errorCallback("KaTeX auto-render: Failed to parse `"+n[a].data+"` with ",e),i.appendChild(document.createTextNode(n[a].rawData));continue}i.appendChild(l)}return i},d=function e(t,r){for(var n=0;n<t.childNodes.length;n++){var i=t.childNodes[n];if(3===i.nodeType){for(var a=i.textContent,o=i.nextSibling,d=0;o&&o.nodeType===Node.TEXT_NODE;)a+=o.textContent,o=o.nextSibling,d++;var s=l(a,r);if(s){for(var f=0;f<d;f++)i.nextSibling.remove();n+=s.childNodes.length-1,t.replaceChild(s,i)}else n+=d}else 1===i.nodeType&&function(){var t=" "+i.className+" ";-1===r.ignoredTags.indexOf(i.nodeName.toLowerCase())&&r.ignoredClasses.every((function(e){return-1===t.indexOf(" "+e+" ")}))&&e(i,r)}()}},s=function(e,t){if(!e)throw new Error("No element provided to render");var r={};for(var n in t)t.hasOwnProperty(n)&&(r[n]=t[n]);r.delimiters=r.delimiters||[{left:"$$",right:"$$",display:!0},{left:"\\(",right:"\\)",display:!1},{left:"\\begin{equation}",right:"\\end{equation}",display:!0},{left:"\\begin{align}",right:"\\end{align}",display:!0},{left:"\\begin{alignat}",right:"\\end{alignat}",display:!0},{left:"\\begin{gather}",right:"\\end{gather}",display:!0},{left:"\\begin{CD}",right:"\\end{CD}",display:!0},{left:"\\[",right:"\\]",display:!0}],r.ignoredTags=r.ignoredTags||["script","noscript","style","textarea","pre","code","option"],r.ignoredClasses=r.ignoredClasses||[],r.errorCallback=r.errorCallback||console.error,r.macros=r.macros||{},d(e,r)}}(),i=i.default}()}));
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@ -0,0 +1,130 @@
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(function webpackUniversalModuleDefinition(root, factory) {
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var __webpack_exports__ = {};
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;// CONCATENATED MODULE: ./contrib/copy-tex/katex2tex.js
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// Set these to how you want inline and display math to be delimited.
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var defaultCopyDelimiters = {
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inline: ['$', '$'],
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// alternative: ['\(', '\)']
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display: ['$$', '$$'] // alternative: ['\[', '\]']
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}; // Replace .katex elements with their TeX source (<annotation> element).
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// Modifies fragment in-place. Useful for writing your own 'copy' handler,
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// as in copy-tex.js.
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function katexReplaceWithTex(fragment, copyDelimiters) {
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for (var i = 0; i < katexHtml.length; i++) {
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var element = katexHtml[i];
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if (element.remove) {
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element.remove();
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element.parentNode.removeChild(element);
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} // Replace .katex-mathml elements with their annotation (TeX source)
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// descendant, with inline delimiters.
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var katexMathml = fragment.querySelectorAll('.katex-mathml');
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for (var _i = 0; _i < katexMathml.length; _i++) {
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var _element = katexMathml[_i];
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var texSource = _element.querySelector('annotation');
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if (texSource) {
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_element.replaceWith(texSource);
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} else if (_element.parentNode) {
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_element.parentNode.replaceChild(texSource, _element);
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}
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texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1];
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}
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} // Switch display math to display delimiters.
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var displays = fragment.querySelectorAll('.katex-display annotation');
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for (var _i2 = 0; _i2 < displays.length; _i2++) {
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var _element2 = displays[_i2];
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_element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1];
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}
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return fragment;
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}
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/* harmony default export */ var katex2tex = (katexReplaceWithTex);
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;// CONCATENATED MODULE: ./contrib/copy-tex/copy-tex.js
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// Return <div class="katex"> element containing node, or null if not found.
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function closestKatex(node) {
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// If node is a Text Node, for example, go up to containing Element,
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// where we can apply the `closest` method.
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var element = node instanceof Element ? node : node.parentElement;
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return element && element.closest('.katex');
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} // Global copy handler to modify behavior on/within .katex elements.
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document.addEventListener('copy', function (event) {
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var selection = window.getSelection();
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if (selection.isCollapsed || !event.clipboardData) {
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return; // default action OK if selection is empty or unchangeable
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}
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var clipboardData = event.clipboardData;
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var range = selection.getRangeAt(0); // When start point is within a formula, expand to entire formula.
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var startKatex = closestKatex(range.startContainer);
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if (startKatex) {
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range.setStartBefore(startKatex);
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} // Similarly, when end point is within a formula, expand to entire formula.
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var endKatex = closestKatex(range.endContainer);
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if (endKatex) {
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range.setEndAfter(endKatex);
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}
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var fragment = range.cloneContents();
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if (!fragment.querySelector('.katex-mathml')) {
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return; // default action OK if no .katex-mathml elements
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}
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var htmlContents = Array.prototype.map.call(fragment.childNodes, function (el) {
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return el instanceof Text ? el.textContent : el.outerHTML;
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}).join(''); // Preserve usual HTML copy/paste behavior.
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clipboardData.setData('text/html', htmlContents); // Rewrite plain-text version.
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clipboardData.setData('text/plain', katex2tex(fragment).textContent); // Prevent normal copy handling.
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event.preventDefault();
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});
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__webpack_exports__ = __webpack_exports__["default"];
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/******/ return __webpack_exports__;
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});
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@ -0,0 +1 @@
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!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t();else if("function"==typeof define&&define.amd)define([],t);else{var n=t();for(var r in n)("object"==typeof exports?exports:e)[r]=n[r]}}("undefined"!=typeof self?self:this,(function(){return function(){"use strict";var e={},t={inline:["$","$"],display:["$$","$$"]};var n=function(e,n){void 0===n&&(n=t);for(var r=e.querySelectorAll(".katex-mathml + .katex-html"),a=0;a<r.length;a++){var o=r[a];o.remove?o.remove():o.parentNode&&o.parentNode.removeChild(o)}for(var i=e.querySelectorAll(".katex-mathml"),l=0;l<i.length;l++){var f=i[l],c=f.querySelector("annotation");c&&(f.replaceWith?f.replaceWith(c):f.parentNode&&f.parentNode.replaceChild(c,f),c.innerHTML=n.inline[0]+c.innerHTML+n.inline[1])}for(var d=e.querySelectorAll(".katex-display annotation"),s=0;s<d.length;s++){var p=d[s];p.innerHTML=n.display[0]+p.innerHTML.substr(n.inline[0].length,p.innerHTML.length-n.inline[0].length-n.inline[1].length)+n.display[1]}return e};function r(e){var t=e instanceof Element?e:e.parentElement;return t&&t.closest(".katex")}return document.addEventListener("copy",(function(e){var t=window.getSelection();if(!t.isCollapsed&&e.clipboardData){var a=e.clipboardData,o=t.getRangeAt(0),i=r(o.startContainer);i&&o.setStartBefore(i);var l=r(o.endContainer);l&&o.setEndAfter(l);var f=o.cloneContents();if(f.querySelector(".katex-mathml")){var c=Array.prototype.map.call(f.childNodes,(function(e){return e instanceof Text?e.textContent:e.outerHTML})).join("");a.setData("text/html",c),a.setData("text/plain",n(f).textContent),e.preventDefault()}}})),e=e.default}()}));
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@ -0,0 +1,105 @@
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// Set these to how you want inline and display math to be delimited.
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var defaultCopyDelimiters = {
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inline: ['$', '$'],
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// alternative: ['\(', '\)']
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display: ['$$', '$$'] // alternative: ['\[', '\]']
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}; // Replace .katex elements with their TeX source (<annotation> element).
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// Modifies fragment in-place. Useful for writing your own 'copy' handler,
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// as in copy-tex.js.
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function katexReplaceWithTex(fragment, copyDelimiters) {
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if (copyDelimiters === void 0) {
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copyDelimiters = defaultCopyDelimiters;
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}
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// Remove .katex-html blocks that are preceded by .katex-mathml blocks
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// (which will get replaced below).
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var katexHtml = fragment.querySelectorAll('.katex-mathml + .katex-html');
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for (var i = 0; i < katexHtml.length; i++) {
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var element = katexHtml[i];
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if (element.remove) {
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element.remove();
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} else if (element.parentNode) {
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element.parentNode.removeChild(element);
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}
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} // Replace .katex-mathml elements with their annotation (TeX source)
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// descendant, with inline delimiters.
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var katexMathml = fragment.querySelectorAll('.katex-mathml');
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for (var _i = 0; _i < katexMathml.length; _i++) {
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var _element = katexMathml[_i];
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var texSource = _element.querySelector('annotation');
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if (texSource) {
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if (_element.replaceWith) {
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_element.replaceWith(texSource);
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} else if (_element.parentNode) {
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_element.parentNode.replaceChild(texSource, _element);
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}
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texSource.innerHTML = copyDelimiters.inline[0] + texSource.innerHTML + copyDelimiters.inline[1];
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}
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} // Switch display math to display delimiters.
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var displays = fragment.querySelectorAll('.katex-display annotation');
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for (var _i2 = 0; _i2 < displays.length; _i2++) {
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var _element2 = displays[_i2];
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_element2.innerHTML = copyDelimiters.display[0] + _element2.innerHTML.substr(copyDelimiters.inline[0].length, _element2.innerHTML.length - copyDelimiters.inline[0].length - copyDelimiters.inline[1].length) + copyDelimiters.display[1];
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}
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return fragment;
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}
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function closestKatex(node) {
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// If node is a Text Node, for example, go up to containing Element,
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// where we can apply the `closest` method.
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var element = node instanceof Element ? node : node.parentElement;
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return element && element.closest('.katex');
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} // Global copy handler to modify behavior on/within .katex elements.
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document.addEventListener('copy', function (event) {
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var selection = window.getSelection();
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if (selection.isCollapsed || !event.clipboardData) {
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return; // default action OK if selection is empty or unchangeable
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}
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var clipboardData = event.clipboardData;
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var range = selection.getRangeAt(0); // When start point is within a formula, expand to entire formula.
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var startKatex = closestKatex(range.startContainer);
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if (startKatex) {
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range.setStartBefore(startKatex);
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} // Similarly, when end point is within a formula, expand to entire formula.
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var endKatex = closestKatex(range.endContainer);
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if (endKatex) {
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range.setEndAfter(endKatex);
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}
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var fragment = range.cloneContents();
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if (!fragment.querySelector('.katex-mathml')) {
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return; // default action OK if no .katex-mathml elements
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}
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var htmlContents = Array.prototype.map.call(fragment.childNodes, el => el instanceof Text ? el.textContent : el.outerHTML).join(''); // Preserve usual HTML copy/paste behavior.
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clipboardData.setData('text/html', htmlContents); // Rewrite plain-text version.
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clipboardData.setData('text/plain', katexReplaceWithTex(fragment).textContent); // Prevent normal copy handling.
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event.preventDefault();
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});
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(function webpackUniversalModuleDefinition(root, factory) {
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if(typeof exports === 'object' && typeof module === 'object')
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module.exports = factory(require("katex"));
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else if(typeof define === 'function' && define.amd)
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define(["katex"], factory);
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else {
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var a = typeof exports === 'object' ? factory(require("katex")) : factory(root["katex"]);
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for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];
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}
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||||
})((typeof self !== 'undefined' ? self : this), function(__WEBPACK_EXTERNAL_MODULE__771__) {
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return /******/ (function() { // webpackBootstrap
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/******/ var __webpack_modules__ = ({
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/***/ 771:
|
||||
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/************************************************************************/
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||||
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||||
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/************************************************************************/
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||||
/******/ /* webpack/runtime/compat get default export */
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/******/
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||||
/******/ /* webpack/runtime/define property getters */
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||||
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/******/ // define getter functions for harmony exports
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/******/
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/******/ /* webpack/runtime/hasOwnProperty shorthand */
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||||
/******/ !function() {
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var __webpack_exports__ = {};
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// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk.
|
||||
!function() {
|
||||
/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(771);
|
||||
/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(katex__WEBPACK_IMPORTED_MODULE_0__);
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var scripts = document.body.getElementsByTagName("script");
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scripts = Array.prototype.slice.call(scripts);
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scripts.forEach(function (script) {
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if (!script.type || !script.type.match(/math\/tex/i)) {
|
||||
return -1;
|
||||
}
|
||||
|
||||
var display = script.type.match(/mode\s*=\s*display(;|\s|\n|$)/) != null;
|
||||
var katexElement = document.createElement(display ? "div" : "span");
|
||||
katexElement.setAttribute("class", display ? "equation" : "inline-equation");
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||||
|
||||
try {
|
||||
katex__WEBPACK_IMPORTED_MODULE_0___default().render(script.text, katexElement, {
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||||
displayMode: display
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||||
});
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} catch (err) {
|
||||
//console.error(err); linter doesn't like this
|
||||
katexElement.textContent = script.text;
|
||||
}
|
||||
|
||||
script.parentNode.replaceChild(katexElement, script);
|
||||
});
|
||||
}();
|
||||
__webpack_exports__ = __webpack_exports__["default"];
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||||
/******/ return __webpack_exports__;
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/******/ })()
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;
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});
|
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@ -0,0 +1 @@
|
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!function(e,t){if("object"==typeof exports&&"object"==typeof module)module.exports=t(require("katex"));else if("function"==typeof define&&define.amd)define(["katex"],t);else{var r="object"==typeof exports?t(require("katex")):t(e.katex);for(var n in r)("object"==typeof exports?exports:e)[n]=r[n]}}("undefined"!=typeof self?self:this,(function(e){return function(){"use strict";var t={771:function(t){t.exports=e}},r={};function n(e){var o=r[e];if(void 0!==o)return o.exports;var i=r[e]={exports:{}};return t[e](i,i.exports,n),i.exports}n.n=function(e){var t=e&&e.__esModule?function(){return e.default}:function(){return e};return n.d(t,{a:t}),t},n.d=function(e,t){for(var r in t)n.o(t,r)&&!n.o(e,r)&&Object.defineProperty(e,r,{enumerable:!0,get:t[r]})},n.o=function(e,t){return Object.prototype.hasOwnProperty.call(e,t)};var o,i,a,u={};return o=n(771),i=n.n(o),a=document.body.getElementsByTagName("script"),(a=Array.prototype.slice.call(a)).forEach((function(e){if(!e.type||!e.type.match(/math\/tex/i))return-1;var t=null!=e.type.match(/mode\s*=\s*display(;|\s|\n|$)/),r=document.createElement(t?"div":"span");r.setAttribute("class",t?"equation":"inline-equation");try{i().render(e.text,r,{displayMode:t})}catch(t){r.textContent=e.text}e.parentNode.replaceChild(r,e)})),u=u.default}()}));
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@ -0,0 +1,24 @@
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import katex from '../katex.mjs';
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||||
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||||
var scripts = document.body.getElementsByTagName("script");
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||||
scripts = Array.prototype.slice.call(scripts);
|
||||
scripts.forEach(function (script) {
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||||
if (!script.type || !script.type.match(/math\/tex/i)) {
|
||||
return -1;
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||||
}
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||||
|
||||
var display = script.type.match(/mode\s*=\s*display(;|\s|\n|$)/) != null;
|
||||
var katexElement = document.createElement(display ? "div" : "span");
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katexElement.setAttribute("class", display ? "equation" : "inline-equation");
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||||
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||||
try {
|
||||
katex.render(script.text, katexElement, {
|
||||
displayMode: display
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||||
});
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||||
} catch (err) {
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||||
//console.error(err); linter doesn't like this
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||||
katexElement.textContent = script.text;
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||||
}
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||||
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||||
script.parentNode.replaceChild(katexElement, script);
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});
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File diff suppressed because one or more lines are too long
@ -0,0 +1,881 @@
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(function webpackUniversalModuleDefinition(root, factory) {
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if(typeof exports === 'object' && typeof module === 'object')
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||||
module.exports = factory(require("katex"));
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else if(typeof define === 'function' && define.amd)
|
||||
define(["katex"], factory);
|
||||
else {
|
||||
var a = typeof exports === 'object' ? factory(require("katex")) : factory(root["katex"]);
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||||
for(var i in a) (typeof exports === 'object' ? exports : root)[i] = a[i];
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||||
}
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||||
})((typeof self !== 'undefined' ? self : this), function(__WEBPACK_EXTERNAL_MODULE__771__) {
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return /******/ (function() { // webpackBootstrap
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||||
/******/ "use strict";
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/******/ var __webpack_modules__ = ({
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/***/ 771:
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||||
/***/ (function(module) {
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||||
module.exports = __WEBPACK_EXTERNAL_MODULE__771__;
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||||
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||||
/***/ })
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||||
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/******/ });
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||||
/************************************************************************/
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||||
/******/ // The module cache
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||||
/******/ var __webpack_module_cache__ = {};
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||||
/******/
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||||
/******/ // The require function
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||||
/******/ function __webpack_require__(moduleId) {
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||||
/******/ // Check if module is in cache
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||||
/******/ var cachedModule = __webpack_module_cache__[moduleId];
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||||
/******/ if (cachedModule !== undefined) {
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||||
/******/ return cachedModule.exports;
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||||
/******/ }
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||||
/******/ // Create a new module (and put it into the cache)
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||||
/******/ var module = __webpack_module_cache__[moduleId] = {
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||||
/******/ // no module.id needed
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||||
/******/ // no module.loaded needed
|
||||
/******/ exports: {}
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||||
/******/ };
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||||
/******/
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||||
/******/ // Execute the module function
|
||||
/******/ __webpack_modules__[moduleId](module, module.exports, __webpack_require__);
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||||
/******/
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||||
/******/ // Return the exports of the module
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||||
/******/ return module.exports;
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||||
/******/ }
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||||
/******/
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||||
/************************************************************************/
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||||
/******/ /* webpack/runtime/compat get default export */
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||||
/******/ !function() {
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/******/ // getDefaultExport function for compatibility with non-harmony modules
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||||
/******/ __webpack_require__.n = function(module) {
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||||
/******/ var getter = module && module.__esModule ?
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/******/ function() { return module['default']; } :
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/******/ function() { return module; };
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/******/ __webpack_require__.d(getter, { a: getter });
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/******/ return getter;
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/******/ };
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/******/ }();
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/******/
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||||
/******/ /* webpack/runtime/define property getters */
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||||
/******/ !function() {
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/******/ // define getter functions for harmony exports
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||||
/******/ __webpack_require__.d = function(exports, definition) {
|
||||
/******/ for(var key in definition) {
|
||||
/******/ if(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {
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||||
/******/ Object.defineProperty(exports, key, { enumerable: true, get: definition[key] });
|
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/******/ }
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||||
/******/ }
|
||||
/******/ };
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||||
/******/ }();
|
||||
/******/
|
||||
/******/ /* webpack/runtime/hasOwnProperty shorthand */
|
||||
/******/ !function() {
|
||||
/******/ __webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }
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||||
/******/ }();
|
||||
/******/
|
||||
/************************************************************************/
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||||
var __webpack_exports__ = {};
|
||||
// This entry need to be wrapped in an IIFE because it need to be isolated against other modules in the chunk.
|
||||
!function() {
|
||||
/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0__ = __webpack_require__(771);
|
||||
/* harmony import */ var katex__WEBPACK_IMPORTED_MODULE_0___default = /*#__PURE__*/__webpack_require__.n(katex__WEBPACK_IMPORTED_MODULE_0__);
|
||||
/**
|
||||
* renderA11yString returns a readable string.
|
||||
*
|
||||
* In some cases the string will have the proper semantic math
|
||||
* meaning,:
|
||||
* renderA11yString("\\frac{1}{2}"")
|
||||
* -> "start fraction, 1, divided by, 2, end fraction"
|
||||
*
|
||||
* However, other cases do not:
|
||||
* renderA11yString("f(x) = x^2")
|
||||
* -> "f, left parenthesis, x, right parenthesis, equals, x, squared"
|
||||
*
|
||||
* The commas in the string aim to increase ease of understanding
|
||||
* when read by a screenreader.
|
||||
*/
|
||||
// NOTE: since we're importing types here these files won't actually be
|
||||
// included in the build.
|
||||
// $FlowIgnore: we import the types directly anyways
|
||||
|
||||
var stringMap = {
|
||||
"(": "left parenthesis",
|
||||
")": "right parenthesis",
|
||||
"[": "open bracket",
|
||||
"]": "close bracket",
|
||||
"\\{": "left brace",
|
||||
"\\}": "right brace",
|
||||
"\\lvert": "open vertical bar",
|
||||
"\\rvert": "close vertical bar",
|
||||
"|": "vertical bar",
|
||||
"\\uparrow": "up arrow",
|
||||
"\\Uparrow": "up arrow",
|
||||
"\\downarrow": "down arrow",
|
||||
"\\Downarrow": "down arrow",
|
||||
"\\updownarrow": "up down arrow",
|
||||
"\\leftarrow": "left arrow",
|
||||
"\\Leftarrow": "left arrow",
|
||||
"\\rightarrow": "right arrow",
|
||||
"\\Rightarrow": "right arrow",
|
||||
"\\langle": "open angle",
|
||||
"\\rangle": "close angle",
|
||||
"\\lfloor": "open floor",
|
||||
"\\rfloor": "close floor",
|
||||
"\\int": "integral",
|
||||
"\\intop": "integral",
|
||||
"\\lim": "limit",
|
||||
"\\ln": "natural log",
|
||||
"\\log": "log",
|
||||
"\\sin": "sine",
|
||||
"\\cos": "cosine",
|
||||
"\\tan": "tangent",
|
||||
"\\cot": "cotangent",
|
||||
"\\sum": "sum",
|
||||
"/": "slash",
|
||||
",": "comma",
|
||||
".": "point",
|
||||
"-": "negative",
|
||||
"+": "plus",
|
||||
"~": "tilde",
|
||||
":": "colon",
|
||||
"?": "question mark",
|
||||
"'": "apostrophe",
|
||||
"\\%": "percent",
|
||||
" ": "space",
|
||||
"\\ ": "space",
|
||||
"\\$": "dollar sign",
|
||||
"\\angle": "angle",
|
||||
"\\degree": "degree",
|
||||
"\\circ": "circle",
|
||||
"\\vec": "vector",
|
||||
"\\triangle": "triangle",
|
||||
"\\pi": "pi",
|
||||
"\\prime": "prime",
|
||||
"\\infty": "infinity",
|
||||
"\\alpha": "alpha",
|
||||
"\\beta": "beta",
|
||||
"\\gamma": "gamma",
|
||||
"\\omega": "omega",
|
||||
"\\theta": "theta",
|
||||
"\\sigma": "sigma",
|
||||
"\\lambda": "lambda",
|
||||
"\\tau": "tau",
|
||||
"\\Delta": "delta",
|
||||
"\\delta": "delta",
|
||||
"\\mu": "mu",
|
||||
"\\rho": "rho",
|
||||
"\\nabla": "del",
|
||||
"\\ell": "ell",
|
||||
"\\ldots": "dots",
|
||||
// TODO: add entries for all accents
|
||||
"\\hat": "hat",
|
||||
"\\acute": "acute"
|
||||
};
|
||||
var powerMap = {
|
||||
"prime": "prime",
|
||||
"degree": "degrees",
|
||||
"circle": "degrees",
|
||||
"2": "squared",
|
||||
"3": "cubed"
|
||||
};
|
||||
var openMap = {
|
||||
"|": "open vertical bar",
|
||||
".": ""
|
||||
};
|
||||
var closeMap = {
|
||||
"|": "close vertical bar",
|
||||
".": ""
|
||||
};
|
||||
var binMap = {
|
||||
"+": "plus",
|
||||
"-": "minus",
|
||||
"\\pm": "plus minus",
|
||||
"\\cdot": "dot",
|
||||
"*": "times",
|
||||
"/": "divided by",
|
||||
"\\times": "times",
|
||||
"\\div": "divided by",
|
||||
"\\circ": "circle",
|
||||
"\\bullet": "bullet"
|
||||
};
|
||||
var relMap = {
|
||||
"=": "equals",
|
||||
"\\approx": "approximately equals",
|
||||
"≠": "does not equal",
|
||||
"\\geq": "is greater than or equal to",
|
||||
"\\ge": "is greater than or equal to",
|
||||
"\\leq": "is less than or equal to",
|
||||
"\\le": "is less than or equal to",
|
||||
">": "is greater than",
|
||||
"<": "is less than",
|
||||
"\\leftarrow": "left arrow",
|
||||
"\\Leftarrow": "left arrow",
|
||||
"\\rightarrow": "right arrow",
|
||||
"\\Rightarrow": "right arrow",
|
||||
":": "colon"
|
||||
};
|
||||
var accentUnderMap = {
|
||||
"\\underleftarrow": "left arrow",
|
||||
"\\underrightarrow": "right arrow",
|
||||
"\\underleftrightarrow": "left-right arrow",
|
||||
"\\undergroup": "group",
|
||||
"\\underlinesegment": "line segment",
|
||||
"\\utilde": "tilde"
|
||||
};
|
||||
|
||||
var buildString = function buildString(str, type, a11yStrings) {
|
||||
if (!str) {
|
||||
return;
|
||||
}
|
||||
|
||||
var ret;
|
||||
|
||||
if (type === "open") {
|
||||
ret = str in openMap ? openMap[str] : stringMap[str] || str;
|
||||
} else if (type === "close") {
|
||||
ret = str in closeMap ? closeMap[str] : stringMap[str] || str;
|
||||
} else if (type === "bin") {
|
||||
ret = binMap[str] || str;
|
||||
} else if (type === "rel") {
|
||||
ret = relMap[str] || str;
|
||||
} else {
|
||||
ret = stringMap[str] || str;
|
||||
} // If the text to add is a number and there is already a string
|
||||
// in the list and the last string is a number then we should
|
||||
// combine them into a single number
|
||||
|
||||
|
||||
if (/^\d+$/.test(ret) && a11yStrings.length > 0 && // TODO(kevinb): check that the last item in a11yStrings is a string
|
||||
// I think we might be able to drop the nested arrays, which would make
|
||||
// this easier to type
|
||||
// $FlowFixMe
|
||||
/^\d+$/.test(a11yStrings[a11yStrings.length - 1])) {
|
||||
a11yStrings[a11yStrings.length - 1] += ret;
|
||||
} else if (ret) {
|
||||
a11yStrings.push(ret);
|
||||
}
|
||||
};
|
||||
|
||||
var buildRegion = function buildRegion(a11yStrings, callback) {
|
||||
var regionStrings = [];
|
||||
a11yStrings.push(regionStrings);
|
||||
callback(regionStrings);
|
||||
};
|
||||
|
||||
var handleObject = function handleObject(tree, a11yStrings, atomType) {
|
||||
// Everything else is assumed to be an object...
|
||||
switch (tree.type) {
|
||||
case "accent":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
a11yStrings.push("with");
|
||||
buildString(tree.label, "normal", a11yStrings);
|
||||
a11yStrings.push("on top");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "accentUnder":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
a11yStrings.push("with");
|
||||
buildString(accentUnderMap[tree.label], "normal", a11yStrings);
|
||||
a11yStrings.push("underneath");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "accent-token":
|
||||
{
|
||||
// Used internally by accent symbols.
|
||||
break;
|
||||
}
|
||||
|
||||
case "atom":
|
||||
{
|
||||
var text = tree.text;
|
||||
|
||||
switch (tree.family) {
|
||||
case "bin":
|
||||
{
|
||||
buildString(text, "bin", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "close":
|
||||
{
|
||||
buildString(text, "close", a11yStrings);
|
||||
break;
|
||||
}
|
||||
// TODO(kevinb): figure out what should be done for inner
|
||||
|
||||
case "inner":
|
||||
{
|
||||
buildString(tree.text, "inner", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "open":
|
||||
{
|
||||
buildString(text, "open", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "punct":
|
||||
{
|
||||
buildString(text, "punct", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "rel":
|
||||
{
|
||||
buildString(text, "rel", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
{
|
||||
tree.family;
|
||||
throw new Error("\"" + tree.family + "\" is not a valid atom type");
|
||||
}
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "color":
|
||||
{
|
||||
var color = tree.color.replace(/katex-/, "");
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start color " + color);
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end color " + color);
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "color-token":
|
||||
{
|
||||
// Used by \color, \colorbox, and \fcolorbox but not directly rendered.
|
||||
// It's a leaf node and has no children so just break.
|
||||
break;
|
||||
}
|
||||
|
||||
case "delimsizing":
|
||||
{
|
||||
if (tree.delim && tree.delim !== ".") {
|
||||
buildString(tree.delim, "normal", a11yStrings);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "genfrac":
|
||||
{
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
// genfrac can have unbalanced delimiters
|
||||
var leftDelim = tree.leftDelim,
|
||||
rightDelim = tree.rightDelim; // NOTE: Not sure if this is a safe assumption
|
||||
// hasBarLine true -> fraction, false -> binomial
|
||||
|
||||
if (tree.hasBarLine) {
|
||||
regionStrings.push("start fraction");
|
||||
leftDelim && buildString(leftDelim, "open", regionStrings);
|
||||
buildA11yStrings(tree.numer, regionStrings, atomType);
|
||||
regionStrings.push("divided by");
|
||||
buildA11yStrings(tree.denom, regionStrings, atomType);
|
||||
rightDelim && buildString(rightDelim, "close", regionStrings);
|
||||
regionStrings.push("end fraction");
|
||||
} else {
|
||||
regionStrings.push("start binomial");
|
||||
leftDelim && buildString(leftDelim, "open", regionStrings);
|
||||
buildA11yStrings(tree.numer, regionStrings, atomType);
|
||||
regionStrings.push("over");
|
||||
buildA11yStrings(tree.denom, regionStrings, atomType);
|
||||
rightDelim && buildString(rightDelim, "close", regionStrings);
|
||||
regionStrings.push("end binomial");
|
||||
}
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "hbox":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "kern":
|
||||
{
|
||||
// No op: we don't attempt to present kerning information
|
||||
// to the screen reader.
|
||||
break;
|
||||
}
|
||||
|
||||
case "leftright":
|
||||
{
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
buildString(tree.left, "open", regionStrings);
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
buildString(tree.right, "close", regionStrings);
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "leftright-right":
|
||||
{
|
||||
// TODO: double check that this is a no-op
|
||||
break;
|
||||
}
|
||||
|
||||
case "lap":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "mathord":
|
||||
{
|
||||
buildString(tree.text, "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "op":
|
||||
{
|
||||
var body = tree.body,
|
||||
name = tree.name;
|
||||
|
||||
if (body) {
|
||||
buildA11yStrings(body, a11yStrings, atomType);
|
||||
} else if (name) {
|
||||
buildString(name, "normal", a11yStrings);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "op-token":
|
||||
{
|
||||
// Used internally by operator symbols.
|
||||
buildString(tree.text, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "ordgroup":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "overline":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
a11yStrings.push("start overline");
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
a11yStrings.push("end overline");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "pmb":
|
||||
{
|
||||
a11yStrings.push("bold");
|
||||
break;
|
||||
}
|
||||
|
||||
case "phantom":
|
||||
{
|
||||
a11yStrings.push("empty space");
|
||||
break;
|
||||
}
|
||||
|
||||
case "raisebox":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "rule":
|
||||
{
|
||||
a11yStrings.push("rectangle");
|
||||
break;
|
||||
}
|
||||
|
||||
case "sizing":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "spacing":
|
||||
{
|
||||
a11yStrings.push("space");
|
||||
break;
|
||||
}
|
||||
|
||||
case "styling":
|
||||
{
|
||||
// We ignore the styling and just pass through the contents
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "sqrt":
|
||||
{
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
var body = tree.body,
|
||||
index = tree.index;
|
||||
|
||||
if (index) {
|
||||
var indexString = flatten(buildA11yStrings(index, [], atomType)).join(",");
|
||||
|
||||
if (indexString === "3") {
|
||||
regionStrings.push("cube root of");
|
||||
buildA11yStrings(body, regionStrings, atomType);
|
||||
regionStrings.push("end cube root");
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("root");
|
||||
regionStrings.push("start index");
|
||||
buildA11yStrings(index, regionStrings, atomType);
|
||||
regionStrings.push("end index");
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("square root of");
|
||||
buildA11yStrings(body, regionStrings, atomType);
|
||||
regionStrings.push("end square root");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "supsub":
|
||||
{
|
||||
var base = tree.base,
|
||||
sub = tree.sub,
|
||||
sup = tree.sup;
|
||||
var isLog = false;
|
||||
|
||||
if (base) {
|
||||
buildA11yStrings(base, a11yStrings, atomType);
|
||||
isLog = base.type === "op" && base.name === "\\log";
|
||||
}
|
||||
|
||||
if (sub) {
|
||||
var regionName = isLog ? "base" : "subscript";
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start " + regionName);
|
||||
buildA11yStrings(sub, regionStrings, atomType);
|
||||
regionStrings.push("end " + regionName);
|
||||
});
|
||||
}
|
||||
|
||||
if (sup) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
var supString = flatten(buildA11yStrings(sup, [], atomType)).join(",");
|
||||
|
||||
if (supString in powerMap) {
|
||||
regionStrings.push(powerMap[supString]);
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("start superscript");
|
||||
buildA11yStrings(sup, regionStrings, atomType);
|
||||
regionStrings.push("end superscript");
|
||||
});
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "text":
|
||||
{
|
||||
// TODO: handle other fonts
|
||||
if (tree.font === "\\textbf") {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start bold text");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end bold text");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start text");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end text");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "textord":
|
||||
{
|
||||
buildString(tree.text, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "smash":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "enclose":
|
||||
{
|
||||
// TODO: create a map for these.
|
||||
// TODO: differentiate between a body with a single atom, e.g.
|
||||
// "cancel a" instead of "start cancel, a, end cancel"
|
||||
if (/cancel/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start cancel");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end cancel");
|
||||
});
|
||||
break;
|
||||
} else if (/box/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start box");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end box");
|
||||
});
|
||||
break;
|
||||
} else if (/sout/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start strikeout");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end strikeout");
|
||||
});
|
||||
break;
|
||||
} else if (/phase/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start phase angle");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end phase angle");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
throw new Error("KaTeX-a11y: enclose node with " + tree.label + " not supported yet");
|
||||
}
|
||||
|
||||
case "vcenter":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "vphantom":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: vphantom not implemented yet");
|
||||
}
|
||||
|
||||
case "hphantom":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: hphantom not implemented yet");
|
||||
}
|
||||
|
||||
case "operatorname":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "array":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: array not implemented yet");
|
||||
}
|
||||
|
||||
case "raw":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: raw not implemented yet");
|
||||
}
|
||||
|
||||
case "size":
|
||||
{
|
||||
// Although there are nodes of type "size" in the parse tree, they have
|
||||
// no semantic meaning and should be ignored.
|
||||
break;
|
||||
}
|
||||
|
||||
case "url":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: url not implemented yet");
|
||||
}
|
||||
|
||||
case "tag":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: tag not implemented yet");
|
||||
}
|
||||
|
||||
case "verb":
|
||||
{
|
||||
buildString("start verbatim", "normal", a11yStrings);
|
||||
buildString(tree.body, "normal", a11yStrings);
|
||||
buildString("end verbatim", "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "environment":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: environment not implemented yet");
|
||||
}
|
||||
|
||||
case "horizBrace":
|
||||
{
|
||||
buildString("start " + tree.label.slice(1), "normal", a11yStrings);
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
buildString("end " + tree.label.slice(1), "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "infix":
|
||||
{
|
||||
// All infix nodes are replace with other nodes.
|
||||
break;
|
||||
}
|
||||
|
||||
case "includegraphics":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: includegraphics not implemented yet");
|
||||
}
|
||||
|
||||
case "font":
|
||||
{
|
||||
// TODO: callout the start/end of specific fonts
|
||||
// TODO: map \BBb{N} to "the naturals" or something like that
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "href":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: href not implemented yet");
|
||||
}
|
||||
|
||||
case "cr":
|
||||
{
|
||||
// This is used by environments.
|
||||
throw new Error("KaTeX-a11y: cr not implemented yet");
|
||||
}
|
||||
|
||||
case "underline":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
a11yStrings.push("start underline");
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
a11yStrings.push("end underline");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "xArrow":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: xArrow not implemented yet");
|
||||
}
|
||||
|
||||
case "cdlabel":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: cdlabel not implemented yet");
|
||||
}
|
||||
|
||||
case "cdlabelparent":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: cdlabelparent not implemented yet");
|
||||
}
|
||||
|
||||
case "mclass":
|
||||
{
|
||||
// \neq and \ne are macros so we let "htmlmathml" render the mathmal
|
||||
// side of things and extract the text from that.
|
||||
var _atomType = tree.mclass.slice(1); // $FlowFixMe: drop the leading "m" from the values in mclass
|
||||
|
||||
|
||||
buildA11yStrings(tree.body, a11yStrings, _atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "mathchoice":
|
||||
{
|
||||
// TODO: track which style we're using, e.g. display, text, etc.
|
||||
// default to text style if even that may not be the correct style
|
||||
buildA11yStrings(tree.text, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "htmlmathml":
|
||||
{
|
||||
buildA11yStrings(tree.mathml, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "middle":
|
||||
{
|
||||
buildString(tree.delim, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "internal":
|
||||
{
|
||||
// internal nodes are never included in the parse tree
|
||||
break;
|
||||
}
|
||||
|
||||
case "html":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
tree.type;
|
||||
throw new Error("KaTeX a11y un-recognized type: " + tree.type);
|
||||
}
|
||||
};
|
||||
|
||||
var buildA11yStrings = function buildA11yStrings(tree, a11yStrings, atomType) {
|
||||
if (a11yStrings === void 0) {
|
||||
a11yStrings = [];
|
||||
}
|
||||
|
||||
if (tree instanceof Array) {
|
||||
for (var i = 0; i < tree.length; i++) {
|
||||
buildA11yStrings(tree[i], a11yStrings, atomType);
|
||||
}
|
||||
} else {
|
||||
handleObject(tree, a11yStrings, atomType);
|
||||
}
|
||||
|
||||
return a11yStrings;
|
||||
};
|
||||
|
||||
var flatten = function flatten(array) {
|
||||
var result = [];
|
||||
array.forEach(function (item) {
|
||||
if (item instanceof Array) {
|
||||
result = result.concat(flatten(item));
|
||||
} else {
|
||||
result.push(item);
|
||||
}
|
||||
});
|
||||
return result;
|
||||
};
|
||||
|
||||
var renderA11yString = function renderA11yString(text, settings) {
|
||||
var tree = katex__WEBPACK_IMPORTED_MODULE_0___default().__parse(text, settings);
|
||||
|
||||
var a11yStrings = buildA11yStrings(tree, [], "normal");
|
||||
return flatten(a11yStrings).join(", ");
|
||||
};
|
||||
|
||||
/* harmony default export */ __webpack_exports__["default"] = (renderA11yString);
|
||||
}();
|
||||
__webpack_exports__ = __webpack_exports__["default"];
|
||||
/******/ return __webpack_exports__;
|
||||
/******/ })()
|
||||
;
|
||||
});
|
||||
File diff suppressed because one or more lines are too long
@ -0,0 +1,800 @@
|
||||
import katex from '../katex.mjs';
|
||||
|
||||
/**
|
||||
* renderA11yString returns a readable string.
|
||||
*
|
||||
* In some cases the string will have the proper semantic math
|
||||
* meaning,:
|
||||
* renderA11yString("\\frac{1}{2}"")
|
||||
* -> "start fraction, 1, divided by, 2, end fraction"
|
||||
*
|
||||
* However, other cases do not:
|
||||
* renderA11yString("f(x) = x^2")
|
||||
* -> "f, left parenthesis, x, right parenthesis, equals, x, squared"
|
||||
*
|
||||
* The commas in the string aim to increase ease of understanding
|
||||
* when read by a screenreader.
|
||||
*/
|
||||
var stringMap = {
|
||||
"(": "left parenthesis",
|
||||
")": "right parenthesis",
|
||||
"[": "open bracket",
|
||||
"]": "close bracket",
|
||||
"\\{": "left brace",
|
||||
"\\}": "right brace",
|
||||
"\\lvert": "open vertical bar",
|
||||
"\\rvert": "close vertical bar",
|
||||
"|": "vertical bar",
|
||||
"\\uparrow": "up arrow",
|
||||
"\\Uparrow": "up arrow",
|
||||
"\\downarrow": "down arrow",
|
||||
"\\Downarrow": "down arrow",
|
||||
"\\updownarrow": "up down arrow",
|
||||
"\\leftarrow": "left arrow",
|
||||
"\\Leftarrow": "left arrow",
|
||||
"\\rightarrow": "right arrow",
|
||||
"\\Rightarrow": "right arrow",
|
||||
"\\langle": "open angle",
|
||||
"\\rangle": "close angle",
|
||||
"\\lfloor": "open floor",
|
||||
"\\rfloor": "close floor",
|
||||
"\\int": "integral",
|
||||
"\\intop": "integral",
|
||||
"\\lim": "limit",
|
||||
"\\ln": "natural log",
|
||||
"\\log": "log",
|
||||
"\\sin": "sine",
|
||||
"\\cos": "cosine",
|
||||
"\\tan": "tangent",
|
||||
"\\cot": "cotangent",
|
||||
"\\sum": "sum",
|
||||
"/": "slash",
|
||||
",": "comma",
|
||||
".": "point",
|
||||
"-": "negative",
|
||||
"+": "plus",
|
||||
"~": "tilde",
|
||||
":": "colon",
|
||||
"?": "question mark",
|
||||
"'": "apostrophe",
|
||||
"\\%": "percent",
|
||||
" ": "space",
|
||||
"\\ ": "space",
|
||||
"\\$": "dollar sign",
|
||||
"\\angle": "angle",
|
||||
"\\degree": "degree",
|
||||
"\\circ": "circle",
|
||||
"\\vec": "vector",
|
||||
"\\triangle": "triangle",
|
||||
"\\pi": "pi",
|
||||
"\\prime": "prime",
|
||||
"\\infty": "infinity",
|
||||
"\\alpha": "alpha",
|
||||
"\\beta": "beta",
|
||||
"\\gamma": "gamma",
|
||||
"\\omega": "omega",
|
||||
"\\theta": "theta",
|
||||
"\\sigma": "sigma",
|
||||
"\\lambda": "lambda",
|
||||
"\\tau": "tau",
|
||||
"\\Delta": "delta",
|
||||
"\\delta": "delta",
|
||||
"\\mu": "mu",
|
||||
"\\rho": "rho",
|
||||
"\\nabla": "del",
|
||||
"\\ell": "ell",
|
||||
"\\ldots": "dots",
|
||||
// TODO: add entries for all accents
|
||||
"\\hat": "hat",
|
||||
"\\acute": "acute"
|
||||
};
|
||||
var powerMap = {
|
||||
"prime": "prime",
|
||||
"degree": "degrees",
|
||||
"circle": "degrees",
|
||||
"2": "squared",
|
||||
"3": "cubed"
|
||||
};
|
||||
var openMap = {
|
||||
"|": "open vertical bar",
|
||||
".": ""
|
||||
};
|
||||
var closeMap = {
|
||||
"|": "close vertical bar",
|
||||
".": ""
|
||||
};
|
||||
var binMap = {
|
||||
"+": "plus",
|
||||
"-": "minus",
|
||||
"\\pm": "plus minus",
|
||||
"\\cdot": "dot",
|
||||
"*": "times",
|
||||
"/": "divided by",
|
||||
"\\times": "times",
|
||||
"\\div": "divided by",
|
||||
"\\circ": "circle",
|
||||
"\\bullet": "bullet"
|
||||
};
|
||||
var relMap = {
|
||||
"=": "equals",
|
||||
"\\approx": "approximately equals",
|
||||
"≠": "does not equal",
|
||||
"\\geq": "is greater than or equal to",
|
||||
"\\ge": "is greater than or equal to",
|
||||
"\\leq": "is less than or equal to",
|
||||
"\\le": "is less than or equal to",
|
||||
">": "is greater than",
|
||||
"<": "is less than",
|
||||
"\\leftarrow": "left arrow",
|
||||
"\\Leftarrow": "left arrow",
|
||||
"\\rightarrow": "right arrow",
|
||||
"\\Rightarrow": "right arrow",
|
||||
":": "colon"
|
||||
};
|
||||
var accentUnderMap = {
|
||||
"\\underleftarrow": "left arrow",
|
||||
"\\underrightarrow": "right arrow",
|
||||
"\\underleftrightarrow": "left-right arrow",
|
||||
"\\undergroup": "group",
|
||||
"\\underlinesegment": "line segment",
|
||||
"\\utilde": "tilde"
|
||||
};
|
||||
|
||||
var buildString = (str, type, a11yStrings) => {
|
||||
if (!str) {
|
||||
return;
|
||||
}
|
||||
|
||||
var ret;
|
||||
|
||||
if (type === "open") {
|
||||
ret = str in openMap ? openMap[str] : stringMap[str] || str;
|
||||
} else if (type === "close") {
|
||||
ret = str in closeMap ? closeMap[str] : stringMap[str] || str;
|
||||
} else if (type === "bin") {
|
||||
ret = binMap[str] || str;
|
||||
} else if (type === "rel") {
|
||||
ret = relMap[str] || str;
|
||||
} else {
|
||||
ret = stringMap[str] || str;
|
||||
} // If the text to add is a number and there is already a string
|
||||
// in the list and the last string is a number then we should
|
||||
// combine them into a single number
|
||||
|
||||
|
||||
if (/^\d+$/.test(ret) && a11yStrings.length > 0 && // TODO(kevinb): check that the last item in a11yStrings is a string
|
||||
// I think we might be able to drop the nested arrays, which would make
|
||||
// this easier to type
|
||||
// $FlowFixMe
|
||||
/^\d+$/.test(a11yStrings[a11yStrings.length - 1])) {
|
||||
a11yStrings[a11yStrings.length - 1] += ret;
|
||||
} else if (ret) {
|
||||
a11yStrings.push(ret);
|
||||
}
|
||||
};
|
||||
|
||||
var buildRegion = (a11yStrings, callback) => {
|
||||
var regionStrings = [];
|
||||
a11yStrings.push(regionStrings);
|
||||
callback(regionStrings);
|
||||
};
|
||||
|
||||
var handleObject = (tree, a11yStrings, atomType) => {
|
||||
// Everything else is assumed to be an object...
|
||||
switch (tree.type) {
|
||||
case "accent":
|
||||
{
|
||||
buildRegion(a11yStrings, a11yStrings => {
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
a11yStrings.push("with");
|
||||
buildString(tree.label, "normal", a11yStrings);
|
||||
a11yStrings.push("on top");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "accentUnder":
|
||||
{
|
||||
buildRegion(a11yStrings, a11yStrings => {
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
a11yStrings.push("with");
|
||||
buildString(accentUnderMap[tree.label], "normal", a11yStrings);
|
||||
a11yStrings.push("underneath");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "accent-token":
|
||||
{
|
||||
// Used internally by accent symbols.
|
||||
break;
|
||||
}
|
||||
|
||||
case "atom":
|
||||
{
|
||||
var {
|
||||
text
|
||||
} = tree;
|
||||
|
||||
switch (tree.family) {
|
||||
case "bin":
|
||||
{
|
||||
buildString(text, "bin", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "close":
|
||||
{
|
||||
buildString(text, "close", a11yStrings);
|
||||
break;
|
||||
}
|
||||
// TODO(kevinb): figure out what should be done for inner
|
||||
|
||||
case "inner":
|
||||
{
|
||||
buildString(tree.text, "inner", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "open":
|
||||
{
|
||||
buildString(text, "open", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "punct":
|
||||
{
|
||||
buildString(text, "punct", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "rel":
|
||||
{
|
||||
buildString(text, "rel", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
{
|
||||
tree.family;
|
||||
throw new Error("\"" + tree.family + "\" is not a valid atom type");
|
||||
}
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "color":
|
||||
{
|
||||
var color = tree.color.replace(/katex-/, "");
|
||||
buildRegion(a11yStrings, regionStrings => {
|
||||
regionStrings.push("start color " + color);
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end color " + color);
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "color-token":
|
||||
{
|
||||
// Used by \color, \colorbox, and \fcolorbox but not directly rendered.
|
||||
// It's a leaf node and has no children so just break.
|
||||
break;
|
||||
}
|
||||
|
||||
case "delimsizing":
|
||||
{
|
||||
if (tree.delim && tree.delim !== ".") {
|
||||
buildString(tree.delim, "normal", a11yStrings);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "genfrac":
|
||||
{
|
||||
buildRegion(a11yStrings, regionStrings => {
|
||||
// genfrac can have unbalanced delimiters
|
||||
var {
|
||||
leftDelim,
|
||||
rightDelim
|
||||
} = tree; // NOTE: Not sure if this is a safe assumption
|
||||
// hasBarLine true -> fraction, false -> binomial
|
||||
|
||||
if (tree.hasBarLine) {
|
||||
regionStrings.push("start fraction");
|
||||
leftDelim && buildString(leftDelim, "open", regionStrings);
|
||||
buildA11yStrings(tree.numer, regionStrings, atomType);
|
||||
regionStrings.push("divided by");
|
||||
buildA11yStrings(tree.denom, regionStrings, atomType);
|
||||
rightDelim && buildString(rightDelim, "close", regionStrings);
|
||||
regionStrings.push("end fraction");
|
||||
} else {
|
||||
regionStrings.push("start binomial");
|
||||
leftDelim && buildString(leftDelim, "open", regionStrings);
|
||||
buildA11yStrings(tree.numer, regionStrings, atomType);
|
||||
regionStrings.push("over");
|
||||
buildA11yStrings(tree.denom, regionStrings, atomType);
|
||||
rightDelim && buildString(rightDelim, "close", regionStrings);
|
||||
regionStrings.push("end binomial");
|
||||
}
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "hbox":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "kern":
|
||||
{
|
||||
// No op: we don't attempt to present kerning information
|
||||
// to the screen reader.
|
||||
break;
|
||||
}
|
||||
|
||||
case "leftright":
|
||||
{
|
||||
buildRegion(a11yStrings, regionStrings => {
|
||||
buildString(tree.left, "open", regionStrings);
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
buildString(tree.right, "close", regionStrings);
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "leftright-right":
|
||||
{
|
||||
// TODO: double check that this is a no-op
|
||||
break;
|
||||
}
|
||||
|
||||
case "lap":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "mathord":
|
||||
{
|
||||
buildString(tree.text, "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "op":
|
||||
{
|
||||
var {
|
||||
body,
|
||||
name
|
||||
} = tree;
|
||||
|
||||
if (body) {
|
||||
buildA11yStrings(body, a11yStrings, atomType);
|
||||
} else if (name) {
|
||||
buildString(name, "normal", a11yStrings);
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "op-token":
|
||||
{
|
||||
// Used internally by operator symbols.
|
||||
buildString(tree.text, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "ordgroup":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "overline":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
a11yStrings.push("start overline");
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
a11yStrings.push("end overline");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "pmb":
|
||||
{
|
||||
a11yStrings.push("bold");
|
||||
break;
|
||||
}
|
||||
|
||||
case "phantom":
|
||||
{
|
||||
a11yStrings.push("empty space");
|
||||
break;
|
||||
}
|
||||
|
||||
case "raisebox":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "rule":
|
||||
{
|
||||
a11yStrings.push("rectangle");
|
||||
break;
|
||||
}
|
||||
|
||||
case "sizing":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "spacing":
|
||||
{
|
||||
a11yStrings.push("space");
|
||||
break;
|
||||
}
|
||||
|
||||
case "styling":
|
||||
{
|
||||
// We ignore the styling and just pass through the contents
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "sqrt":
|
||||
{
|
||||
buildRegion(a11yStrings, regionStrings => {
|
||||
var {
|
||||
body,
|
||||
index
|
||||
} = tree;
|
||||
|
||||
if (index) {
|
||||
var indexString = flatten(buildA11yStrings(index, [], atomType)).join(",");
|
||||
|
||||
if (indexString === "3") {
|
||||
regionStrings.push("cube root of");
|
||||
buildA11yStrings(body, regionStrings, atomType);
|
||||
regionStrings.push("end cube root");
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("root");
|
||||
regionStrings.push("start index");
|
||||
buildA11yStrings(index, regionStrings, atomType);
|
||||
regionStrings.push("end index");
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("square root of");
|
||||
buildA11yStrings(body, regionStrings, atomType);
|
||||
regionStrings.push("end square root");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "supsub":
|
||||
{
|
||||
var {
|
||||
base,
|
||||
sub,
|
||||
sup
|
||||
} = tree;
|
||||
var isLog = false;
|
||||
|
||||
if (base) {
|
||||
buildA11yStrings(base, a11yStrings, atomType);
|
||||
isLog = base.type === "op" && base.name === "\\log";
|
||||
}
|
||||
|
||||
if (sub) {
|
||||
var regionName = isLog ? "base" : "subscript";
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start " + regionName);
|
||||
buildA11yStrings(sub, regionStrings, atomType);
|
||||
regionStrings.push("end " + regionName);
|
||||
});
|
||||
}
|
||||
|
||||
if (sup) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
var supString = flatten(buildA11yStrings(sup, [], atomType)).join(",");
|
||||
|
||||
if (supString in powerMap) {
|
||||
regionStrings.push(powerMap[supString]);
|
||||
return;
|
||||
}
|
||||
|
||||
regionStrings.push("start superscript");
|
||||
buildA11yStrings(sup, regionStrings, atomType);
|
||||
regionStrings.push("end superscript");
|
||||
});
|
||||
}
|
||||
|
||||
break;
|
||||
}
|
||||
|
||||
case "text":
|
||||
{
|
||||
// TODO: handle other fonts
|
||||
if (tree.font === "\\textbf") {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start bold text");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end bold text");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start text");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end text");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "textord":
|
||||
{
|
||||
buildString(tree.text, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "smash":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "enclose":
|
||||
{
|
||||
// TODO: create a map for these.
|
||||
// TODO: differentiate between a body with a single atom, e.g.
|
||||
// "cancel a" instead of "start cancel, a, end cancel"
|
||||
if (/cancel/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start cancel");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end cancel");
|
||||
});
|
||||
break;
|
||||
} else if (/box/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start box");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end box");
|
||||
});
|
||||
break;
|
||||
} else if (/sout/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start strikeout");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end strikeout");
|
||||
});
|
||||
break;
|
||||
} else if (/phase/.test(tree.label)) {
|
||||
buildRegion(a11yStrings, function (regionStrings) {
|
||||
regionStrings.push("start phase angle");
|
||||
buildA11yStrings(tree.body, regionStrings, atomType);
|
||||
regionStrings.push("end phase angle");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
throw new Error("KaTeX-a11y: enclose node with " + tree.label + " not supported yet");
|
||||
}
|
||||
|
||||
case "vcenter":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "vphantom":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: vphantom not implemented yet");
|
||||
}
|
||||
|
||||
case "hphantom":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: hphantom not implemented yet");
|
||||
}
|
||||
|
||||
case "operatorname":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "array":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: array not implemented yet");
|
||||
}
|
||||
|
||||
case "raw":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: raw not implemented yet");
|
||||
}
|
||||
|
||||
case "size":
|
||||
{
|
||||
// Although there are nodes of type "size" in the parse tree, they have
|
||||
// no semantic meaning and should be ignored.
|
||||
break;
|
||||
}
|
||||
|
||||
case "url":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: url not implemented yet");
|
||||
}
|
||||
|
||||
case "tag":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: tag not implemented yet");
|
||||
}
|
||||
|
||||
case "verb":
|
||||
{
|
||||
buildString("start verbatim", "normal", a11yStrings);
|
||||
buildString(tree.body, "normal", a11yStrings);
|
||||
buildString("end verbatim", "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "environment":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: environment not implemented yet");
|
||||
}
|
||||
|
||||
case "horizBrace":
|
||||
{
|
||||
buildString("start " + tree.label.slice(1), "normal", a11yStrings);
|
||||
buildA11yStrings(tree.base, a11yStrings, atomType);
|
||||
buildString("end " + tree.label.slice(1), "normal", a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "infix":
|
||||
{
|
||||
// All infix nodes are replace with other nodes.
|
||||
break;
|
||||
}
|
||||
|
||||
case "includegraphics":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: includegraphics not implemented yet");
|
||||
}
|
||||
|
||||
case "font":
|
||||
{
|
||||
// TODO: callout the start/end of specific fonts
|
||||
// TODO: map \BBb{N} to "the naturals" or something like that
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "href":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: href not implemented yet");
|
||||
}
|
||||
|
||||
case "cr":
|
||||
{
|
||||
// This is used by environments.
|
||||
throw new Error("KaTeX-a11y: cr not implemented yet");
|
||||
}
|
||||
|
||||
case "underline":
|
||||
{
|
||||
buildRegion(a11yStrings, function (a11yStrings) {
|
||||
a11yStrings.push("start underline");
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
a11yStrings.push("end underline");
|
||||
});
|
||||
break;
|
||||
}
|
||||
|
||||
case "xArrow":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: xArrow not implemented yet");
|
||||
}
|
||||
|
||||
case "cdlabel":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: cdlabel not implemented yet");
|
||||
}
|
||||
|
||||
case "cdlabelparent":
|
||||
{
|
||||
throw new Error("KaTeX-a11y: cdlabelparent not implemented yet");
|
||||
}
|
||||
|
||||
case "mclass":
|
||||
{
|
||||
// \neq and \ne are macros so we let "htmlmathml" render the mathmal
|
||||
// side of things and extract the text from that.
|
||||
var _atomType = tree.mclass.slice(1); // $FlowFixMe: drop the leading "m" from the values in mclass
|
||||
|
||||
|
||||
buildA11yStrings(tree.body, a11yStrings, _atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "mathchoice":
|
||||
{
|
||||
// TODO: track which style we're using, e.g. display, text, etc.
|
||||
// default to text style if even that may not be the correct style
|
||||
buildA11yStrings(tree.text, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "htmlmathml":
|
||||
{
|
||||
buildA11yStrings(tree.mathml, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
case "middle":
|
||||
{
|
||||
buildString(tree.delim, atomType, a11yStrings);
|
||||
break;
|
||||
}
|
||||
|
||||
case "internal":
|
||||
{
|
||||
// internal nodes are never included in the parse tree
|
||||
break;
|
||||
}
|
||||
|
||||
case "html":
|
||||
{
|
||||
buildA11yStrings(tree.body, a11yStrings, atomType);
|
||||
break;
|
||||
}
|
||||
|
||||
default:
|
||||
tree.type;
|
||||
throw new Error("KaTeX a11y un-recognized type: " + tree.type);
|
||||
}
|
||||
};
|
||||
|
||||
var buildA11yStrings = function buildA11yStrings(tree, a11yStrings, atomType) {
|
||||
if (a11yStrings === void 0) {
|
||||
a11yStrings = [];
|
||||
}
|
||||
|
||||
if (tree instanceof Array) {
|
||||
for (var i = 0; i < tree.length; i++) {
|
||||
buildA11yStrings(tree[i], a11yStrings, atomType);
|
||||
}
|
||||
} else {
|
||||
handleObject(tree, a11yStrings, atomType);
|
||||
}
|
||||
|
||||
return a11yStrings;
|
||||
};
|
||||
|
||||
var flatten = function flatten(array) {
|
||||
var result = [];
|
||||
array.forEach(function (item) {
|
||||
if (item instanceof Array) {
|
||||
result = result.concat(flatten(item));
|
||||
} else {
|
||||
result.push(item);
|
||||
}
|
||||
});
|
||||
return result;
|
||||
};
|
||||
|
||||
var renderA11yString = function renderA11yString(text, settings) {
|
||||
var tree = katex.__parse(text, settings);
|
||||
|
||||
var a11yStrings = buildA11yStrings(tree, [], "normal");
|
||||
return flatten(a11yStrings).join(", ");
|
||||
};
|
||||
|
||||
export { renderA11yString as default };
|
||||
Loading…
Reference in New Issue