72 lines
2.7 KiB
JavaScript
72 lines
2.7 KiB
JavaScript
// 기술 역량 원본 이미지를 웹 전송용 WebP로 변환합니다.
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// 실행: node scripts/generate-capability-webp.mjs [--force]
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import fs from "node:fs";
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import path from "node:path";
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import vm from "node:vm";
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import { execFileSync } from "node:child_process";
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import { fileURLToPath } from "node:url";
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const root = path.resolve(path.dirname(fileURLToPath(import.meta.url)), "..");
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const force = process.argv.includes("--force");
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const context = { window: {} };
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vm.runInNewContext(fs.readFileSync(path.join(root, "js", "capabilities-data.js"), "utf8"), context);
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const sources = new Map();
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for (const item of context.window.CAPABILITY_PROJECTS) {
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if (item.image) sources.set(item.image, "background");
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if (item.objectImage) sources.set(item.objectImage, "object");
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if (item.objectImageSecondary) sources.set(item.objectImageSecondary, "object");
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}
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function dimensions(source) {
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const output = execFileSync("sips", ["-g", "pixelWidth", "-g", "pixelHeight", source], {
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encoding: "utf8",
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});
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return {
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width: Number(output.match(/pixelWidth: (\d+)/)?.[1]),
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height: Number(output.match(/pixelHeight: (\d+)/)?.[1]),
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};
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}
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function optimizedPath(source) {
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return source
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.replace("assets/images/", "assets/images-webp/")
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.replace(/\.(?:png|jpe?g)$/i, ".webp");
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}
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let sourceBytes = 0;
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let outputBytes = 0;
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let generated = 0;
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for (const [relativeSource, type] of sources) {
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const source = path.join(root, relativeSource);
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const target = path.join(root, optimizedPath(relativeSource));
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const sourceStat = fs.statSync(source);
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sourceBytes += sourceStat.size;
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fs.mkdirSync(path.dirname(target), { recursive: true });
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if (!force && fs.existsSync(target) && fs.statSync(target).mtimeMs >= sourceStat.mtimeMs) {
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outputBytes += fs.statSync(target).size;
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continue;
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}
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const { width, height } = dimensions(source);
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const maxWidth = type === "background" ? 2560 : 2400;
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const maxHeight = type === "background" ? 1800 : 2400;
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const scale = Math.min(1, maxWidth / width, maxHeight / height);
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const args = ["-quiet", "-mt", "-m", "6", "-q", type === "background" ? "80" : "86"];
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if (type === "background") args.push("-sharp_yuv");
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else args.push("-alpha_q", "100", "-exact");
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if (scale < 1) args.push("-resize", String(Math.round(width * scale)), String(Math.round(height * scale)));
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args.push(source, "-o", target);
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execFileSync("cwebp", args, { stdio: "inherit" });
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outputBytes += fs.statSync(target).size;
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generated += 1;
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}
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const savedPercent = Math.round((1 - outputBytes / sourceBytes) * 100);
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console.log(
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`${generated ? `Generated ${generated}` : "Checked"} WebP assets: ` +
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`${(sourceBytes / 1048576).toFixed(1)}MB -> ${(outputBytes / 1048576).toFixed(1)}MB (${savedPercent}% reduction)`,
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);
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