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mirror of https://github.com/node-red/node-red.git synced 2023-10-10 13:36:53 +02:00
node-red/scripts/build-custom-theme.js
Nick O'Leary b77cd56a01
Migrate from node-sass to sass
node-sass is deprecated and doesn't work on Node 16.
sass is actively maintained and considered the canonical sass
implementation.
2021-05-11 18:13:21 +01:00

132 lines
3.7 KiB
JavaScript

#!/usr/bin/env node
// This script can be used to build custom colour-scheme css files.
//
// 1. Create a copy of packages/node_modules/@node-red/editor-client/src/sass/colors.scss
// and change the values to the desired colours.
//
// 2. Run this script, providing the path to the custom file using the --in option
//
// 3. Save the output of the script to a file - either redirect its output,
// or use the --out option.
//
// 4. Edit your settings file to set the theme:
// editorTheme: {
// page: {
// css: "/path/to/file/generated/by/this/script"
// }
// }
//
// 5. Restart Node-RED
//
const os = require("os");
const nopt = require("nopt");
const path = require("path");
const fs = require("fs-extra");
const sass = require("sass");
const knownOpts = {
"help": Boolean,
"long": Boolean,
"in": [path],
"out": [path]
};
const shortHands = {
"?":["--help"]
};
nopt.invalidHandler = function(k,v,t) {}
const parsedArgs = nopt(knownOpts,shortHands,process.argv,2)
if (parsedArgs.help) {
console.log("Usage: build-custom-theme [-?] [--in FILE] [--out FILE]");
console.log("");
console.log("Options:");
console.log(" --in FILE Custom colors sass file");
console.log(" --out FILE Where you write the result");
console.log(" --long Do not compress the output");
console.log(" -?, --help Show this help");
console.log("");
process.exit();
}
const ruleRegex = /(\$.*?) *: *(\S[\S\s]*?);/g;
var match;
const customColors = {};
if (parsedArgs.in && fs.existsSync(parsedArgs.in)) {
let customColorsFile = fs.readFileSync(parsedArgs.in,"utf-8");
while((match = ruleRegex.exec(customColorsFile)) !== null) {
customColors[match[1]] = match[2];
}
}
// Load base colours
let colorsFile = fs.readFileSync(path.join(__dirname,"../packages/node_modules/@node-red/editor-client/src/sass/colors.scss"),"utf-8")
let updatedColors = [];
while((match = ruleRegex.exec(colorsFile)) !== null) {
updatedColors.push(match[1]+": "+(customColors[match[1]]||match[2])+";")
}
(async function() {
const tmpDir = os.tmpdir();
const workingDir = await fs.mkdtemp(`${tmpDir}${path.sep}`);
await fs.copy(path.join(__dirname,"../packages/node_modules/@node-red/editor-client/src/sass/"),workingDir)
await fs.writeFile(path.join(workingDir,"colors.scss"),updatedColors.join("\n"))
const result = sass.renderSync({
outputStyle: "expanded",
file: path.join(workingDir,"style.scss"),
});
const css = result.css.toString()
const lines = css.split("\n");
const colorCSS = []
const nonColorCSS = [];
let inKeyFrameBlock = false;
lines.forEach(l => {
if (inKeyFrameBlock) {
nonColorCSS.push(l);
if (/^}/.test(l)) {
inKeyFrameBlock = false;
}
} else if (/^@keyframes/.test(l)) {
nonColorCSS.push(l);
inKeyFrameBlock = true;
} else if (!/^ /.test(l)) {
colorCSS.push(l);
nonColorCSS.push(l);
} else if (/color|border|background|fill|stroke|outline|box-shadow/.test(l)) {
colorCSS.push(l);
} else {
nonColorCSS.push(l);
}
});
const nrPkg = require("../package.json");
const now = new Date().toISOString();
const header = `/*
* Theme generated with Node-RED ${nrPkg.version} on ${now}
*/`;
var output = sass.renderSync({outputStyle: parsedArgs.long?"expanded":"compressed",data:colorCSS.join("\n")});
if (parsedArgs.out) {
await fs.writeFile(parsedArgs.out,header+"\n"+output.css);
} else {
console.log(header);
console.log(output.css.toString());
}
await fs.remove(workingDir);
})()