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import imageminZopfli from 'imagemin-zopfli';
import {optimize} from 'svgo';
import {fabric} from 'fabric';
import fs from 'fs';
import {resolve, dirname} from 'path';
import {fileURLToPath} from 'url';
const {readFile, writeFile} = fs.promises;
const __dirname = dirname(fileURLToPath(import.meta.url));
const logoFile = resolve(__dirname, '../assets/logo.svg');
function exit(err) {
if (err) console.error(err);
process.exit(err ? 1 : 0);
}
function loadSvg(svg) {
return new Promise((resolve) => {
fabric.loadSVGFromString(svg, (objects, options) => {
resolve({objects, options});
});
});
}
async function generate(svg, outputFile, {size, bg}) {
if (outputFile.endsWith('.svg')) {
const {data} = optimize(svg, {
plugins: [
'preset-default',
'removeDimensions',
{
name: 'addAttributesToSVGElement',
params: {attributes: [{width: size}, {height: size}]}
},
],
});
await writeFile(outputFile, data);
return;
}
const {objects, options} = await loadSvg(svg);
const canvas = new fabric.Canvas();
canvas.setDimensions({width: size, height: size});
const ctx = canvas.getContext('2d');
ctx.scale(options.width ? (size / options.width) : 1, options.height ? (size / options.height) : 1);
if (bg) {
canvas.add(new fabric.Rect({
left: 0,
top: 0,
height: size * (1 / (size / options.height)),
width: size * (1 / (size / options.width)),
fill: 'white',
}));
}
canvas.add(fabric.util.groupSVGElements(objects, options));
canvas.renderAll();
let png = Buffer.from([]);
for await (const chunk of canvas.createPNGStream()) {
png = Buffer.concat([png, chunk]);
}
png = await imageminZopfli({more: true})(png);
await writeFile(outputFile, png);
}
async function main() {
const gitea = process.argv.slice(2).includes('gitea');
const svg = await readFile(logoFile, 'utf8');
await Promise.all([
generate(svg, resolve(__dirname, '../public/img/logo.svg'), {size: 32}),
generate(svg, resolve(__dirname, '../public/img/logo.png'), {size: 512}),
generate(svg, resolve(__dirname, '../public/img/favicon.png'), {size: 180}),
generate(svg, resolve(__dirname, '../public/img/avatar_default.png'), {size: 200}),
generate(svg, resolve(__dirname, '../public/img/apple-touch-icon.png'), {size: 180, bg: true}),
gitea && generate(svg, resolve(__dirname, '../public/img/gitea.svg'), {size: 32}),
]);
}
main().then(exit).catch(exit);
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