98 lines
2.6 KiB
HTML
98 lines
2.6 KiB
HTML
<!DOCTYPE HTML>
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<html>
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<head>
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<meta charset="utf-8" />
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</head>
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<body>
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<div id="stdout"></div>
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</body>
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<script src="../lib/require.js"></script>
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<script>
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require.config({
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baseUrl: "../lib",
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paths: {
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"src": "../src"
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}
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});
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function Archive(text) {
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this.files = [];
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this.offset = 0;
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this.offset = this.parseTarChunk(text, this.offset)
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}
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Archive.prototype = {
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parseTarNumber: function parseTarNumber(text) {
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// if (text.charCodeAt(0) & 0x80 == 1) {
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// GNU tar 8-byte binary big-endian number
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// } else {
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return parseInt(text, 8);
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// }
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},
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parseTarHeader: function parseTarHeader(text, offset) {
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var i = offset || 0;
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var h = {};
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h.filename = text.substring(i, i+=100).split("\0", 1)[0];
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h.mode = text.substring(i, i+=8).split("\0", 1)[0];
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h.uid = text.substring(i, i+=8).split("\0", 1)[0];
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h.gid = text.substring(i, i+=8).split("\0", 1)[0];
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h.length = this.parseTarNumber(text.substring(i, i+=12));
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h.lastModified = text.substring(i, i+=12).split("\0", 1)[0];
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h.checkSum = text.substring(i, i+=8).split("\0", 1)[0];
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h.fileType = text.substring(i, i+=1).split("\0", 1)[0];
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h.linkName = text.substring(i, i+=100).split("\0", 1)[0];
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return h;
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},
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parseTarChunk: function parseTarChunk(text, offset) {
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while (text.length >= offset + 512) {
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var header = this.files.length == 0 ? null : this.files[this.files.length-1];
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if (header && header.data == null) {
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if (offset + header.length <= text.length) {
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header.data = text.substring(offset, offset+header.length);
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offset += 512 * Math.ceil(header.length / 512);
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} else { // not loaded yet
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break;
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}
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} else {
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var header = this.parseTarHeader(text, offset);
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if (header.length > 0 || header.filename != '') {
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this.files.push(header);
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offset += 512;
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header.offset = offset;
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} else { // empty header, stop processing
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offset = text.length;
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}
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}
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}
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return offset;
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}
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};
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require(["src/fs"], function(IDBFS) {
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var xhr = new XMLHttpRequest();
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xhr.open('GET', './archive.tar', true);
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// xhr.responseType = 'arraybuffer';
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xhr.overrideMimeType("text/plain; charset=x-user-defined");
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xhr.setRequestHeader("Content-Type", "text/plain");
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xhr.onload = function(e) {
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// var uInt8Array = new Uint8Array(this.response);
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var archive = new Archive(this.response);
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archive.files.forEach(function(file) {
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console.log(file.filename);
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});
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};
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xhr.send(null);
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function unpack(archive) {
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}
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});
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</script>
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</html>
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