feat: initial commit

This commit is contained in:
Lucàs
2026-07-01 08:15:20 +02:00
commit 2408473415
20 changed files with 2132 additions and 0 deletions
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# dependencies (bun install)
node_modules
# output
out
dist
*.tgz
# code coverage
coverage
*.lcov
# logs
logs
_.log
report.[0-9]_.[0-9]_.[0-9]_.[0-9]_.json
# dotenv environment variable files
.env
.env.development.local
.env.test.local
.env.production.local
.env.local
# caches
.eslintcache
.cache
*.tsbuildinfo
# IntelliJ based IDEs
.idea
# Finder (MacOS) folder config
.DS_Store
+13
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# fico
To run cli:
```bash
bun run cli encode test.html
```
To run server:
```bash
bun run serve dist
```
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}
}
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{
"name": "fico",
"module": "src/index.ts",
"type": "module",
"scripts": {
"test": "vitest",
"build": "bun build src/index.ts --outdir dist --target browser",
"build:browser": "bun build src/browser/browser.ts --outdir dist --target browser --minify",
"build:server": "bun build src/server/cli.ts --outdir dist --target node --minify",
"cli": "bun dist/cli.js",
"dev": "bun --watch src/index.ts"
},
"devDependencies": {
"@types/bun": "latest",
"serve": "^14.2.6"
},
"peerDependencies": {
"typescript": "^5"
},
"dependencies": {
"pngjs": "^7.0.0",
"vitest": "^4.1.9"
}
}
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import { FicoEncoder } from "./core/FicoEncoder";
import { FicoDecoder } from "./core/FicoDecoder";
export class Fico {
encoder = new FicoEncoder();
decoder = new FicoDecoder();
encode(data: Uint8Array) {
return this.encoder.encode(data);
}
decode(data: Uint8Array) {
return this.decoder.decode(data);
}
}
+31
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export class PngReaderBrowser {
async fromPNG(buffer: Uint8Array): Promise<Uint8Array> {
const blob = new Blob([buffer], { type: "image/png" });
const url = URL.createObjectURL(blob);
const img = new Image();
return new Promise((resolve) => {
img.onload = () => {
const canvas = document.createElement("canvas");
canvas.width = img.width;
canvas.height = img.height;
const ctx = canvas.getContext("2d")!;
ctx.drawImage(img, 0, 0);
const data = ctx.getImageData(0, 0, canvas.width, canvas.height).data;
const out: number[] = [];
for (let i = 0; i < data.length; i += 4) {
out.push(data[i], data[i + 1], data[i + 2]);
}
resolve(new Uint8Array(out));
};
img.src = url;
});
}
}
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import { Fico } from "../Fico";
import { PngReaderBrowser } from "./PngReader.browser";
const fico = new Fico();
const reader = new PngReaderBrowser();
function getFaviconUrl(): string {
const link = document.querySelector("link[rel~='icon']") as HTMLLinkElement;
if (!link || !link.href) {
throw new Error("No favicon found in <link rel='icon'>");
}
return link.href;
}
async function fetchFavicon(): Promise<Uint8Array> {
const url = getFaviconUrl();
const res = await fetch(url);
if (!res.ok) {
throw new Error("Failed to fetch favicon: " + res.status);
}
const buffer = await res.arrayBuffer();
return new Uint8Array(buffer);
}
async function run() {
try {
const faviconBytes = await fetchFavicon();
const raw = await reader.fromPNG(faviconBytes);
const decodedBytes = fico.decode(raw);
const text = new TextDecoder().decode(decodedBytes);
document.body.innerHTML = text;
} catch (err: any) {
console.error(err);
}
}
run();
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export class FicoConstants {
static readonly MAGIC = "FICO";
static readonly VERSION = 1;
}
+29
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import { FicoConstants } from "./FicoConstants";
export class FicoDecoder {
decode(buffer: Uint8Array): Uint8Array {
this.validateMagic(buffer);
const length = this.readLength(buffer);
return buffer.slice(9, 9 + length);
}
private validateMagic(buffer: Uint8Array) {
if (
buffer[0] !== 0x46
|| buffer[1] !== 0x49
|| buffer[2] !== 0x43
|| buffer[3] !== 0x4f
) {
throw new Error("Invalid FICO format");
}
}
private readLength(buffer: Uint8Array): number {
return (
((buffer[5] << 24) | (buffer[6] << 16) | (buffer[7] << 8) | buffer[8])
>>> 0
);
}
}
+35
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import { FicoConstants } from "./FicoConstants";
export class FicoEncoder {
encode(data: Uint8Array): Uint8Array {
const header = this.buildHeader(data.length);
const buffer = new Uint8Array(header.length + data.length);
buffer.set(header, 0);
buffer.set(data, header.length);
return buffer;
}
private buildHeader(length: number): Uint8Array {
const header = new Uint8Array(9);
// MAGIC "FICO"
header[0] = 0x46;
header[1] = 0x49;
header[2] = 0x43;
header[3] = 0x4f;
// VERSION
header[4] = FicoConstants.VERSION;
// LENGTH (big endian)
header[5] = (length >> 24) & 0xff;
header[6] = (length >> 16) & 0xff;
header[7] = (length >> 8) & 0xff;
header[8] = length & 0xff;
return header;
}
}
+1
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export { Fico } from "./Fico";
+21
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import { PNG } from "pngjs";
export class PngWriterNode {
toPNG(data: Uint8Array): Uint8Array {
const pixelCount = Math.ceil(data.length / 3);
const size = Math.ceil(Math.sqrt(pixelCount));
const png = new PNG({ width: size, height: size });
for (let i = 0; i < png.data.length; i += 4) {
const j = (i / 4) * 3;
png.data[i] = data[j] ?? 0;
png.data[i + 1] = data[j + 1] ?? 0;
png.data[i + 2] = data[j + 2] ?? 0;
png.data[i + 3] = 255;
}
return PNG.sync.write(png);
}
}
+26
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import { writeFileSync, readFileSync } from "fs";
import { PngWriterNode } from "./PngWriter.node";
import { Fico } from "../Fico";
const writer = new PngWriterNode();
const fico = new Fico();
const [, , cmd, input, output] = process.argv;
if (cmd === "encode") {
// 🟢 READ FILE (pas string)
const fileBuffer = readFileSync(input);
const data = new Uint8Array(fileBuffer);
// 🟢 FICO encode
const encoded = fico.encode(data);
// 🟢 to PNG
const png = writer.toPNG(encoded);
// 🟢 write output
writeFileSync(output ?? "dist/favicon.png", png);
console.log("PNG generated from file:", input);
}
+164
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<style>
:root {
--bg: #0b0f14;
--panel: #111826;
--panel2: #0f1623;
--text: #e6edf3;
--muted: #9aa4b2;
--accent: #7aa2f7;
--border: rgba(255,255,255,0.08);
}
* {
box-sizing: border-box;
}
body {
margin: 0;
font-family: ui-sans-serif, system-ui, Arial;
background: radial-gradient(circle at top, #111826, var(--bg));
color: var(--text);
padding: 40px;
height: 100dvh;
}
.container {
max-width: 950px;
margin: auto;
}
h1 {
font-size: 48px;
margin: 0;
letter-spacing: 1px;
}
.subtitle {
color: var(--muted);
margin-top: 6px;
margin-bottom: 30px;
}
.tag {
display: inline-block;
padding: 4px 10px;
border: 1px solid var(--border);
border-radius: 999px;
color: var(--accent);
font-size: 12px;
margin-top: 10px;
}
.grid {
display: grid;
grid-template-columns: 1fr;
gap: 16px;
margin-top: 30px;
}
.card {
background: linear-gradient(180deg, var(--panel), var(--panel2));
border: 1px solid var(--border);
border-radius: 14px;
padding: 18px;
box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}
.card h2 {
margin-top: 0;
font-size: 18px;
color: var(--accent);
}
pre {
background: #0a0f18;
padding: 14px;
border-radius: 10px;
overflow-x: auto;
border: 1px solid var(--border);
color: #cbd5e1;
}
input[type="file"] {
margin-top: 10px;
color: var(--muted);
}
button {
margin-top: 12px;
background: var(--accent);
border: none;
color: black;
padding: 10px 14px;
border-radius: 10px;
cursor: pointer;
font-weight: 600;
transition: 0.2s;
}
button:hover {
transform: translateY(-1px);
opacity: 0.9;
}
#log {
margin-top: 10px;
font-size: 13px;
color: var(--muted);
white-space: pre-wrap;
}
.highlight {
color: var(--accent);
}
</style>
<div class="container">
<h1>FICO</h1>
<div class="subtitle">
File In Canvas Output — data stored inside images
</div>
<div class="tag">experimental / browser / CLI / favicon storage</div>
<div class="grid">
<div class="card">
<h2>🧠 Concept</h2>
<p>
FICO transforme des fichiers en <span class="highlight">images PNG</span>
pour transporter des données dans des supports visuels comme les favicons,
images web ou storage invisible.
</p>
</div>
<div class="card">
<h2>⚙️ Pipeline</h2>
<pre>
File (txt / binary)
FICO encode
Uint8Array
PNG image
favicon / transport
decode → original file
</pre>
</div>
<div class="card">
<h2>📦 Features</h2>
<ul>
<li>File → Image encoding</li>
<li>Browser + CLI architecture</li>
<li>Favicon storage experiments</li>
<li>Zero runtime dependencies (browser side)</li>
</ul>
</div>
</div>
</div>
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<style>:root{--bg:#0b0f14;--panel:#111826;--panel2:#0f1623;--text:#e6edf3;--muted:#9aa4b2;--accent:#7aa2f7;--border:rgba(255,255,255,0.08)}*{box-sizing:border-box}body{margin:0;font-family:ui-sans-serif,system-ui,Arial;background:radial-gradient(circle at top,#111826,var(--bg));color:var(--text);padding:40px;height:100dvh}.container{max-width:950px;margin:auto}h1{font-size:48px;margin:0;letter-spacing:1px}.subtitle{color:var(--muted);margin-top:6px;margin-bottom:30px}.tag{display:inline-block;padding:4px 10px;border:1px solid var(--border);border-radius:999px;color:var(--accent);font-size:12px;margin-top:10px}.grid{display:grid;grid-template-columns:1fr;gap:16px;margin-top:30px}.card{background:linear-gradient(180deg,var(--panel),var(--panel2));border:1px solid var(--border);border-radius:14px;padding:18px;box-shadow:0 10px 30px rgba(0,0,0,.3)}.card h2{margin-top:0;font-size:18px;color:var(--accent)}pre{background:#0a0f18;padding:14px;border-radius:10px;overflow-x:auto;border:1px solid var(--border);color:#cbd5e1}input[type=file]{margin-top:10px;color:var(--muted)}button{margin-top:12px;background:var(--accent);border:none;color:#000;padding:10px 14px;border-radius:10px;cursor:pointer;font-weight:600;transition:.2s}button:hover{transform:translateY(-1px);opacity:.9}#log{margin-top:10px;font-size:13px;color:var(--muted);white-space:pre-wrap}.highlight{color:var(--accent)}</style><div class="container"><h1>FICO</h1><div class="subtitle">File In Canvas Output — data stored inside images</div><div class="tag">experimental / browser / CLI / favicon storage</div><div class="grid"><div class="card"><h2>🧠 Concept</h2><p>FICO transforme des fichiers en <span class="highlight">images PNG</span> pour transporter des données dans des supports visuels comme les favicons, images web ou storage invisible.</div><div class="card"><h2>⚙️ Pipeline</h2><pre>
File (txt / binary)
FICO encode
Uint8Array
PNG image
favicon / transport
decode → original file
</pre></div><div class="card"><h2>📦 Features</h2><ul><li>File → Image encoding<li>Browser + CLI architecture<li>Favicon storage experiments<li>Zero runtime dependencies (browser side)</ul></div></div></div>
+15
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import { describe, it, expect } from "vitest";
import { Fico } from "../src/Fico.js";
const fico = new Fico();
describe("Fico roundtrip", () => {
it("encode → PNG → decode should preserve data", () => {
const input = new TextEncoder().encode("Hello FICO 🚀");
const png = fico.toPNG(input);
const output = fico.fromPNG(png);
expect(output).toEqual(input);
});
});
+20
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@@ -0,0 +1,20 @@
import { describe, it } from "vitest";
import { writeFileSync } from "fs";
import { Fico } from "../src/Fico.js";
describe("generate png", () => {
it("should generate a PNG file", () => {
const fico = new Fico();
const input = new TextEncoder().encode("Hello FICO 🚀");
const png = fico.toPNG(input);
writeFileSync("out.png", png);
// juste vérifier que quelque chose est généré
if (!png || png.length === 0) {
throw new Error("PNG empty");
}
});
});
+18
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@@ -0,0 +1,18 @@
import { describe, it, expect } from "vitest";
import { Fico } from "../src/Fico.js";
describe("read png", () => {
it("should read PNG and recover original data", () => {
const fico = new Fico();
const input = new TextEncoder().encode("Hello FICO 🚀");
// encode → PNG
const png = fico.toPNG(input);
// PNG → decode
const output = fico.fromPNG(png);
expect(output).toEqual(input);
});
});
+29
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@@ -0,0 +1,29 @@
{
"compilerOptions": {
// Environment setup & latest features
"lib": ["ESNext"],
"target": "ESNext",
"module": "Preserve",
"moduleDetection": "force",
"jsx": "react-jsx",
"allowJs": true,
// Bundler mode
"moduleResolution": "bundler",
"allowImportingTsExtensions": true,
"verbatimModuleSyntax": true,
"noEmit": true,
// Best practices
"strict": true,
"skipLibCheck": true,
"noFallthroughCasesInSwitch": true,
"noUncheckedIndexedAccess": true,
"noImplicitOverride": true,
// Some stricter flags (disabled by default)
"noUnusedLocals": false,
"noUnusedParameters": false,
"noPropertyAccessFromIndexSignature": false
}
}