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node-red/scripts/build-custom-theme.js

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2019-05-22 15:27:28 +02:00
#!/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 nopt = require("nopt");
const path = require("path");
const fs = require("fs")
const sass = require("node-sass");
const knownOpts = {
"help": 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(" -?, --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])+";")
}
const result = sass.renderSync({
outputStyle: "expanded",
file: path.join(__dirname,"../packages/node_modules/@node-red/editor-client/src/sass/style.scss"),
importer: function(url, prev, done){
if (url === 'colors') {
return {
contents: updatedColors.join("\n")
}
}
return {file:"/Users/nol/code/node-red/node-red/packages/node_modules/@node-red/editor-client/src/sass/"+url+".scss"}
}
});
const css = result.css.toString()
const lines = css.split("\n");
const colorCSS = []
const nonColorCSS = [];
lines.forEach(l => {
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);
}
});
var output = sass.renderSync({outputStyle: "compressed",data:colorCSS.join("\n")});
if (parsedArgs.out) {
fs.writeFileSync(parsedArgs.out,output.css);
} else {
console.log(output.css.toString());
}