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Add fontExtensions configuration option. (mathjax/MathJax#3410) #1337

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Add fontExtensions configuration option. (mathjax/MathJax#3410) #1337

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38 changes: 29 additions & 9 deletions components/mjs/output/util.js
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Original file line number Diff line number Diff line change
Expand Up @@ -2,9 +2,29 @@ import {combineDefaults, combineWithMathJax} from '#js/components/global.js';
import {Package} from '#js/components/package.js';
import {hasWindow} from '#js/util/context.js';

export const FONTPATH = hasWindow ?
'https://cdn.jsdelivr.net/npm/@mathjax/%%FONT%%-font':
'@mathjax/%%FONT%%-font';
export const FONTPATH = hasWindow
? 'https://cdn.jsdelivr.net/npm/@mathjax/%%FONT%%-font'
: '@mathjax/%%FONT%%-font';

export function configFont(font, jax, config, extension = '') {
const path = (config.fontPath || (FONTPATH + extension));
const name = (font.match(/^[a-z]+:/) ? (font.match(/[^/:\\]*$/) || [jax])[0] : font);
combineDefaults(MathJax.config.loader, 'paths', {
[name+extension]: (name === font ? path.replace(/%%FONT%%/g, font) : font)
});
return `[${name}${extension}]`;
}

export function configExtensions(jax, config) {
const extensions = [];
for (const name of (config.fontExtensions || [])) {
const font = configFont(name, jax, config, '-extension');
const module = `${font}/${jax}`
extensions.push(module);
}
return extensions;
}

export const OutputUtil = {
config(jax, jaxClass, defaultFont, fontClass) {

Expand All @@ -20,15 +40,15 @@ export const OutputUtil = {
}

if (font.charAt(0) !== '[') {
const path = (config.fontPath || FONTPATH);
const name = (font.match(/^[a-z]+:/) ? (font.match(/[^/:\\]*$/) || [jax])[0] : font);
combineDefaults(MathJax.config.loader, 'paths', {
[name]: (name === font ? path.replace(/%%FONT%%/g, font) : font)
});
font = `[${name}]`;
font = configFont(font, jax, config);
}
const name = font.substring(1, font.length - 1);

const extensions = configExtensions(jax, config);
if (extensions.length) {
MathJax.loader.addPackageData(`${font}/${jax}`, {extraLoads: extensions});
}

if (name !== defaultFont || !fontClass) {

MathJax.loader.addPackageData(`output/${jax}`, {extraLoads: [`${font}/${jax}`]});
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1 change: 1 addition & 0 deletions ts/output/common.ts
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Expand Up @@ -144,6 +144,7 @@ export abstract class CommonOutputJax<
LinebreakVisitor: null, // The LinebreakVisitor to use
},
font: '', // the font component to load
fontExtensions: [], // the font extensions to load
htmlHDW: 'auto', // 'use', 'force', or 'ignore' data-mjx-hdw attributes
wrapperFactory: null, // The wrapper factory to use
fontData: null, // The FontData object to use
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