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‎docs/index.html‎

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<!DOCTYPE html>
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<html lang="en">
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<head>
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<meta charset="UTF-8" />
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<meta name="viewport" content="width=device-width, initial-scale=1.0"/>
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<title>Halo Content Converter</title>
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<style>
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body {
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font-family: system-ui, sans-serif;
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padding: 2em;
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background-color: #121212;
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color: #e0e0e0;
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}
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h1, h2 {
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color: #ffffff;
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}
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.drop-zone {
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border: 2px dashed #555;
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padding: 2em;
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text-align: center;
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color: #ccc;
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margin-bottom: 1em;
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background-color: #1e1e1e;
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}
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.output {
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white-space: pre-wrap;
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background: #1e1e1e;
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padding: 1em;
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margin-top: 1em;
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max-height: 300px;
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overflow-y: auto;
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border: 1px solid #333;
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border-radius: 6px;
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}
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button {
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margin-top: 1em;
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padding: 0.6em 1.2em;
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font-size: 1em;
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border: none;
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border-radius: 4px;
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background-color: #2d89ef;
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color: white;
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cursor: pointer;
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}
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button:disabled {
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background-color: #444;
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cursor: not-allowed;
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}
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input[type="file"] {
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color: #ccc;
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}
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.faq {
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margin-top: 3em;
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background-color: #1e1e1e;
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padding: 1.5em;
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border-radius: 6px;
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border: 1px solid #333;
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}
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.faq h2 {
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margin-top: 0;
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}
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.faq-item {
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margin-bottom: 1.5em;
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}
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.faq-item h3 {
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margin-bottom: 0.2em;
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color: #89dceb;
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}
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.faq-item p {
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margin: 0;
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color: #ccc;
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}
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</style>
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</head>
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<body>
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<h1>Halo Content Converter</h1>
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<div class="drop-zone" id="drop-zone">
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Drag & drop files here or <input type="file" multiple id="file-input" />
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</div>
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<button id="convert-btn" disabled>Convert Files</button>
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<div class="output" id="output"></div>
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<!-- FAQ Section -->
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<div class="faq" id="faq">
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<h2>FAQ</h2>
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<div class="faq-item">
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<h3>Where can I find my Halo Xbox 360 container files?</h3>
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<p>After copying all the files you want to convert to a USB:</p>
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<p> - Halo 3: "Content/E0000.../4D5307E6/00000001"</p>
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<p> - Halo 3 ODST: "Content/E0000.../4D530877/00000001"</p>
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<p> - Halo Reach: "Content/E0000.../4D53085B/00000001"</p>
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<p> - Halo 4: "Content/E0000.../4D530919/00000001"</p>
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<p>The files within those folders are the 'container' files!</p>
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</div>
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<div class="faq-item">
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<h3>How do I get these into MCC?</h3>
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<p>Drop the .bin files into the 'game_variants' folder & .mvar files into the 'map_variants' folder for their respective games.</p>
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</div>
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<div class="faq-item">
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<h3>Is my file data stored or sent anywhere?</h3>
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<p>All file processing happens locally in the browser. No server interaction.</p>
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</div>
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</div>
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<script>
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const fileInput = document.getElementById("file-input");
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const dropZone = document.getElementById("drop-zone");
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const output = document.getElementById("output");
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const convertBtn = document.getElementById("convert-btn");
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let selectedFiles = [];
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const getString = (bytes, offset, length) => {
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return new TextDecoder("ascii").decode(bytes.slice(offset, offset + length)).replace(/\0/g, '').trim();
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};
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const findIndexOfString = (bytes, str, start = 0) => {
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const target = new TextEncoder().encode(str);
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for (let i = start; i < bytes.length - target.length; i++) {
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let match = true;
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for (let j = 0; j < target.length; j++) {
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if (bytes[i + j] !== target[j]) {
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match = false;
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break;
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}
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}
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if (match) return i;
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}
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return -1;
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};
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const findIndexOfBytes = (bytes, pattern, start = 0) => {
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for (let i = start; i <= bytes.length - pattern.length; i++) {
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let match = true;
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for (let j = 0; j < pattern.length; j++) {
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if (bytes[i + j] !== pattern[j]) {
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match = false;
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break;
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}
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}
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if (match) return i;
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}
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return -1;
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};
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const sanitizeFilename = (name) => {
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return name.replace(/[\\/:*?"<>|]/g, "_");
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};
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const triggerDownload = (blob, filename) => {
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const a = document.createElement("a");
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const url = URL.createObjectURL(blob);
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a.href = url;
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a.download = filename;
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document.body.appendChild(a);
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a.click();
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document.body.removeChild(a);
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URL.revokeObjectURL(url);
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};
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const processFile = async (file) => {
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try {
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const buffer = await file.arrayBuffer();
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const bytes = new Uint8Array(buffer);
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const fileContent = new TextDecoder("ascii").decode(bytes);
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const blfIndex = fileContent.indexOf("_blf");
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if (blfIndex === -1) return;
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const content = getString(bytes, 0xD0C0, 0x7F);
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const sanitizedContent = sanitizeFilename(content);
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const creatorName = getString(bytes, 0xD088, 0x0F);
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const creatorXUID = Array.from(bytes.slice(0xD080, 0xD088)).map(b => b.toString(16).padStart(2, '0')).join('');
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const modifierName = getString(bytes, 0xD0AC, 0x0F);
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const modifierXUID = Array.from(bytes.slice(0xD0A4, 0xD0AC)).map(b => b.toString(16).padStart(2, '0')).join('');
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const description = getString(bytes, 0xD1C0, 0xFF);
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const headerType = getString(bytes, 0xD2F0, 0x04);
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const typeMap = {
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"mpvr": { type: "Gametypes", ext: ".bin" },
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"mvar": { type: "Map variants", ext: ".mvar" },
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"athr": { type: "Theater films", ext: ".film" },
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"scnc": { type: "Screenshots", ext: ".jpg" }
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};
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if (!(headerType in typeMap)) return;
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output.innerText += `\nFile: ${file.name}
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Creator: ${creatorName} (XUID: ${creatorXUID})
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Modifier: ${modifierName} (XUID: ${modifierXUID})
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Content: ${content}
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Description: ${description}
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Header Type: ${headerType}\n`;
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if (headerType === "scnc") {
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const jpgStartMarker = [0xFF, 0xD8, 0xFF, 0xE0];
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const jpgEndMarker = [0xFF, 0xD9];
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const jpgStart = findIndexOfBytes(bytes, jpgStartMarker, blfIndex);
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const jpgEnd = findIndexOfBytes(bytes, jpgEndMarker, jpgStart);
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if (jpgStart === -1 || jpgEnd === -1) return;
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const jpgBytes = bytes.slice(jpgStart, jpgEnd + 2);
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const blob = new Blob([jpgBytes], { type: "image/jpeg" });
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triggerDownload(blob, sanitizedContent + ".jpg");
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return;
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}
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const stopIndex = findIndexOfString(bytes, "_eof", blfIndex);
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if (stopIndex === -1) return;
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const extracted = bytes.slice(blfIndex, stopIndex + 4 + 0x0D);
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const { ext } = typeMap[headerType];
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const blob = new Blob([extracted], { type: "application/octet-stream" });
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triggerDownload(blob, sanitizedContent + ext);
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} catch (e) {
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output.innerText += `Error processing file ${file.name}: ${e.message}\n`;
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}
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};
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const handleFiles = (files) => {
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selectedFiles = Array.from(files);
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output.innerText = `${selectedFiles.length} file(s) ready to convert.\nClick "Convert Files" to proceed.`;
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convertBtn.disabled = false;
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};
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fileInput.addEventListener("change", () => handleFiles(fileInput.files));
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dropZone.addEventListener("dragover", e => e.preventDefault());
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dropZone.addEventListener("drop", e => {
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e.preventDefault();
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handleFiles(e.dataTransfer.files);
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});
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convertBtn.addEventListener("click", async () => {
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output.innerText += "\nProcessing files...\n";
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for (const file of selectedFiles) {
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await processFile(file);
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await new Promise(resolve => setTimeout(resolve, 150));
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}
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output.innerText += "\nAll files processed.";
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convertBtn.disabled = true;
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});
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</script>
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</body>
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</html>

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