mirror of
https://github.com/Pomax/BezierInfo-2.git
synced 2025-08-29 11:10:38 +02:00
XeLaTeX interpration of LaTeX for localization
This commit is contained in:
Pomax
@@ -1,72 +0,0 @@
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/**
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*
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* This script acts as support to the latex-loader for webpack.
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* The latex-loader finds and preprocesses LaTeX elements,
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* and then this script is run via execSync, to get the SVG
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* conversion happening synchronously, since Webpack doesn't
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* do async loaders (unfortunately).
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*
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*/
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var className="LaTeX SVG";
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var fs = require("fs");
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var API = require("mathjax-node/lib/mj-single");
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var cleanUp = require("./cleanup");
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// Set up the MathJax processor
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API.config({
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MathJax: {
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SVG: {
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font: "Latin-Modern" // STIX-Web is too fat for this article
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},
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TeX: {
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extensions: [
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"AMSmath.js",
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"AMSsymbols.js",
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"autoload-all.js",
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"color.js"
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]
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}
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}
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});
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API.start();
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// Get the LaTeX we need, either straight up or base64 encoded:
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var latex = process.argv.indexOf("--latex");
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if (latex === -1) {
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var base64 = process.argv.indexOf("--base64");
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if (base64 === -1) {
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console.error("missing [--latex] or [--base64] runtime option");
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process.exit(1);
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}
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base64 = process.argv[base64+1];
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latex = new Buffer(base64, "base64").toString();
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} else {
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// get the --latex value
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var args = Array.from(process.argv);
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latex = args.slice(latex+1).join(" ");
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if(!latex) {
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console.error("missing [--latex] runtime option string");
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process.exit(1);
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}
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}
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// Get the filename we'll need to write:
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var hash = process.argv.indexOf("--hash");
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hash = (latex === -1) ? Date.now() : process.argv[hash+1];
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var filename = "images/latex/" + hash + ".svg";
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var destination = __dirname + "/../" + filename;
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// Set up the MathJax options for this conversion run
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var options = { math: cleanUp(latex), format: "TeX", svg: true };
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// Convert the passed LaTeX to SVG form
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API.typeset(options, function saveToFile(data) {
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if (data.errors) {
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console.error(data.errors);
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process.exit(1);
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}
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var filedata = ["<!--", options.math, "-->", data.svg].join("\n");
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fs.writeFileSync(destination, filedata);
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process.exit(0);
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});
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@@ -1,5 +0,0 @@
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var LaTeX = "\\[ {\\color{blue}E} = mc^2 \\]";
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var execSync = require("child_process").execSync;
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var cmd = "node mathjax.js --latex " + LaTeX;
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var result = execSync(cmd);
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var string = result.toString();
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134
tools/tex-to-svg.js
Normal file
134
tools/tex-to-svg.js
Normal file
@@ -0,0 +1,134 @@
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/**
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*
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* This script acts as support to the latex-loader for webpack.
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* The latex-loader finds and preprocesses LaTeX elements,
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* and then this script is run via execSync, to get the SVG
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* conversion happening synchronously, since Webpack doesn't
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* do async loaders (unfortunately).
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*
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*/
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var fs = require("fs-extra");
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var path = require("path");
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var cleanUp = require("./cleanup");
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var execSync = require("child_process").execSync;
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// Get the LaTeX we need, either straight up or base64 encoded:
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var latex = process.argv.indexOf("--latex");
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if (latex === -1) {
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var base64 = process.argv.indexOf("--base64");
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if (base64 === -1) {
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console.error("missing [--latex] or [--base64] runtime option");
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process.exit(1);
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}
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base64 = process.argv[base64+1];
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latex = new Buffer(base64, "base64").toString();
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} else {
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// get the --latex value
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var args = Array.from(process.argv);
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latex = args.slice(latex+1).join(" ");
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if(!latex) {
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console.error("missing [--latex] runtime option string");
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process.exit(1);
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}
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}
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// Get the filename we'll need to write:
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var hash = process.argv.indexOf("--hash");
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hash = (latex === -1) ? Date.now() : process.argv[hash+1];
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var dir = path.resolve(__dirname + "/../images/latex");
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fs.ensureDirSync(dir);
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var filename = path.join(dir, hash + ".svg");
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// also set up a tex source copy
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dir = path.join(dir, "source");
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fs.ensureDirSync(dir);
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var TeXfilename = path.join(dir, hash + ".tex");
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var latexSourceCode = cleanUp(latex);
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var aligned = latexSourceCode.indexOf("\\begin{aligned}") !== -1;
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//if (aligned) {
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latexSourceCode = [
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'\\[',
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latexSourceCode,
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'\\]'
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].join('\n');
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//}
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// Convert the passed LaTeX to SVG form
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// write the .tex source
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var filedata = [
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'\\documentclass[12pt]{article}',
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'\\usepackage[paperwidth=12in, paperheight=12in]{geometry}', // pdfcrop will remove the unused bits later
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'\\pagestyle{empty}',
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'\\usepackage{color}',
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'\\usepackage{amsmath}',
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'\\usepackage{unicode-math}'
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]
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if (process.env.locale === 'zh-CN') {
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filedata = filedata.concat([
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'\\usepackage{xeCJK}',
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'\\xeCJKsetup{CJKmath=true}',
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'\\setCJKmainfont{SimSun}'
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]);
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}
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if (process.env.locale === 'ja-JP') {
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filedata = filedata.concat([
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'\\usepackage{xeCJK}',
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'\\xeCJKsetup{CJKmath=true}',
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'\\setCJKmainfont{MS Mincho}'
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]);
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}
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filedata = filedata.concat([
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'\\setmainfont[Ligatures=TeX]{TeX Gyre Pagella}',
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'\\setmathfont{TeX Gyre Pagella Math}',
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// '\\setmainfont{XITS}',
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// '\\setmathfont{XITS Math}',
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// '\\setmainfont[Ligatures=TeX]{Cambria}',
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// '\\setmathfont{Cambria Math}',
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// '\\setmainfont[Ligatures=TeX]{LucidaBrightOT}',
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// '\\setmathfont{LucidaBrightMathOT}',
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'\\begin{document}',
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latexSourceCode,
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'\\end{document}'
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]);
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filedata = filedata.join('\n');
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fs.writeFileSync(TeXfilename, filedata);
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var PDFfilename = TeXfilename.replace(".tex",".pdf");
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var PDFfilenameCropped = TeXfilename.replace(".tex","-crop.pdf");
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var SVGfilename = TeXfilename.replace(".tex",".svg");
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// make the SVGfilename one dir higher
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SVGfilename = path.resolve(path.join(path.dirname(TeXfilename), '..', hash + ".svg"));
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// run xelatex on this file
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try {
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var cmd = `npm run xelatex -- -output-directory "${path.dirname(TeXfilename)}" "${TeXfilename}"`;
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console.log(cmd);
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console.log(" - running xelatex on " + hash + ".tex");
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execSync(cmd); //, { stdio: 'inherit' });
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var cmd = `npm run pdfcrop -- "${ PDFfilename }"`;
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console.log(" - cropping PDF to document content");
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execSync(cmd); //, { stdio: 'inherit' });
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var cmd = `pdf2svg "${ PDFfilenameCropped }" "${ SVGfilename }"`;
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console.log(" - converting cropped PDF to SVG");
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execSync(cmd); //, { stdio: 'inherit' });
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var cmd = `npm run svgo -- "${ SVGfilename }"`;
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console.log(" - cleaning up SVG");
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execSync(cmd); //, { stdio: 'inherit' });
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}
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catch (e) { console.error(e); process.exit(1); }
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