121 lines
3.0 KiB
JavaScript
121 lines
3.0 KiB
JavaScript
const gulp = require("gulp");
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const path = require("path");
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const fs = require("fs");
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const hash = require("object-hash");
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const ICON_PACKAGE_PATH = path.resolve(
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__dirname,
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"../../node_modules/@mdi/svg/"
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);
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const META_PATH = path.resolve(ICON_PACKAGE_PATH, "meta.json");
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const PACKAGE_PATH = path.resolve(ICON_PACKAGE_PATH, "package.json");
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const ICON_PATH = path.resolve(ICON_PACKAGE_PATH, "svg");
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const OUTPUT_DIR = path.resolve(__dirname, "../../build/mdi");
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const REMOVED_ICONS_PATH = path.resolve(__dirname, "../removedIcons.json");
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const encoding = "utf8";
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const getMeta = () => {
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const file = fs.readFileSync(META_PATH, { encoding });
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const meta = JSON.parse(file);
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return meta.map((icon) => {
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const svg = fs.readFileSync(`${ICON_PATH}/${icon.name}.svg`, {
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encoding,
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});
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return { path: svg.match(/ d="([^"]+)"/)[1], name: icon.name };
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});
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};
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const addRemovedMeta = (meta) => {
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const file = fs.readFileSync(REMOVED_ICONS_PATH, { encoding });
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const removed = JSON.parse(file);
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const combinedMeta = [...meta, ...removed];
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return combinedMeta.sort((a, b) => a.name.localeCompare(b.name));
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};
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const splitBySize = (meta) => {
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const chunks = [];
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const CHUNK_SIZE = 50000;
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let curSize = 0;
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let startKey;
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let icons = [];
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Object.values(meta).forEach((icon) => {
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if (startKey === undefined) {
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startKey = icon.name;
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}
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curSize += icon.path.length;
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icons.push(icon);
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if (curSize > CHUNK_SIZE) {
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chunks.push({
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startKey,
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endKey: icon.name,
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icons,
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});
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curSize = 0;
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startKey = undefined;
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icons = [];
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}
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});
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chunks.push({
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startKey,
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icons,
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});
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return chunks;
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};
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const findDifferentiator = (curString, prevString) => {
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for (let i = 0; i < curString.length; i++) {
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if (curString[i] !== prevString[i]) {
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return curString.substring(0, i + 1);
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}
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}
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throw new Error("Cannot find differentiator", curString, prevString);
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};
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gulp.task("gen-icons-json", (done) => {
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const meta = addRemovedMeta(getMeta());
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const split = splitBySize(meta);
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if (!fs.existsSync(OUTPUT_DIR)) {
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fs.mkdirSync(OUTPUT_DIR, { recursive: true });
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}
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const parts = [];
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let lastEnd;
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split.forEach((chunk) => {
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let startKey;
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if (lastEnd === undefined) {
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chunk.startKey = undefined;
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startKey = undefined;
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} else {
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startKey = findDifferentiator(chunk.startKey, lastEnd);
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}
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lastEnd = chunk.endKey;
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const output = {};
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chunk.icons.forEach((icon) => {
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output[icon.name] = icon.path;
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});
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const filename = hash(output);
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parts.push({ start: startKey, file: filename });
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fs.writeFileSync(
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path.resolve(OUTPUT_DIR, `${filename}.json`),
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JSON.stringify(output)
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);
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});
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const file = fs.readFileSync(PACKAGE_PATH, { encoding });
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const package = JSON.parse(file);
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fs.writeFileSync(
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path.resolve(OUTPUT_DIR, "iconMetadata.json"),
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JSON.stringify({ version: package.version, parts })
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);
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done();
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});
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