78 lines
2.1 KiB
JavaScript
Executable file
78 lines
2.1 KiB
JavaScript
Executable file
#! /usr/bin/env node
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/*************************************************************************
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*
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* tex2png
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*
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* Uses MathJax and batik to convert a TeX or LaTeX string to
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* a PNG image.
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*
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* ----------------------------------------------------------------------
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*
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* Copyright (c) 2014 The MathJax Consortium
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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var mjAPI = require("../lib/mj-single.js");
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var argv = require("yargs")
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.demand(1).strict()
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.usage("Usage: tex2png [options] 'math' > file.png",{
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inline: {
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boolean: true,
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describe: "process as in-line TeX"
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},
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linebreaks: {
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boolean: true,
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describe: "perform automatic line-breaking"
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},
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dpi: {
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default: 0,
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describe: "dpi for image (0 = calculate automatically)"
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},
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font: {
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default: "TeX",
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describe: "web font to use"
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},
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ex: {
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default: 6,
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describe: "ex-size in pixels"
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},
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width: {
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default: 100,
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describe: "width of container in ex"
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},
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extensions: {
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default: "",
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describe: "extra MathJax extensions e.g. 'Safe,TeX/noUndefined'"
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}
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})
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.argv;
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if (argv.font === "STIX") argv.font = "STIX-Web";
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mjAPI.config({MathJax: {SVG: {font: argv.font}}, extensions: argv.extensions});
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mjAPI.start();
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if (argv.dpi === 0) {argv.dpi = argv.ex * 16} // pixels properly sized
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mjAPI.typeset({
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math: argv._[0],
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format: (argv.inline ? "inline-TeX" : "TeX"),
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png:true, dpi:argv.dpi,
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ex: argv.ex, width: argv.width,
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linebreaks: argv.linebreaks
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}, function (data) {
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if (!data.errors) {process.stdout.write(new Buffer(data.png.slice(22),'base64'))}
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});
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