SheetJS
2d0c71ac88
- exported object includes static find method - CLI option displays file manifest - ignore mid-table free sectors - ignore lazily-deleted files (orphan nodes)
145 lines
4.2 KiB
HTML
145 lines
4.2 KiB
HTML
<!DOCTYPE html>
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<!-- cfb.js (C) 2013-present SheetJS http://sheetjs.com -->
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<!-- vim: set ts=2: -->
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<html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
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<title>JS-CFB Live Demo</title>
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<style>
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#drop{
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border:2px dashed #bbb;
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-moz-border-radius:5px;
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-webkit-border-radius:5px;
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border-radius:5px;
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padding:25px;
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text-align:center;
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font:20pt bold,"Vollkorn";color:#bbb
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}
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#b64data{
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width:100%;
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}
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a { text-decoration: none }
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</style>
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</head>
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<body>
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<pre>
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<b><a href="http://sheetjs.com">SheetJS CFB Preview Live Demo</a></b>
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<a href="https://github.com/SheetJS/js-cfb">Source Code Repo</a>
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<a href="https://github.com/SheetJS/js-cfb/issues">Issues? Something look weird? Click here and report an issue</a>
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<div id="drop">Drop an XLS file here to see the CFB structure.</div>
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<b>Advanced Demo Options:</b>
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Use readAsBinaryString: (when available) <input type="checkbox" name="userabs" checked>
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</pre>
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<pre id="out"></pre>
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<br />
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<script src="https://unpkg.com/printj@1.1.0/dist/printj.min.js"></script>
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<script src="cfb.js"></script>
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<script>
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/*jshint browser:true */
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/* eslint-env browser */
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/* eslint no-use-before-define:0 */
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/*global CFB, out */
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var rABS = typeof FileReader !== "undefined" && typeof FileReader.prototype !== "undefined" && typeof FileReader.prototype.readAsBinaryString !== "undefined";
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if(!rABS) {
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document.getElementsByName("userabs")[0].disabled = true;
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document.getElementsByName("userabs")[0].checked = false;
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}
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function fixdata(data) {
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var o = "", l = 0, w = 10240;
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for(; l<data.byteLength/w; ++l) o+=String.fromCharCode.apply(null,new Uint8Array(data.slice(l*w,l*w+w)));
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o+=String.fromCharCode.apply(null, new Uint8Array(data.slice(l*w)));
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return o;
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}
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function get_manifest(cfb) {
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var out = [];
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var sprintf = PRINTJ.sprintf;
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var format_date = function(date/*:Date*/)/*:string*/ {
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return sprintf("%02u-%02u-%02u %02u:%02u", date.getUTCMonth()+1, date.getUTCDate(), date.getUTCFullYear()%100, date.getUTCHours(), date.getUTCMinutes());
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};
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var basetime = new Date(1980,0,1);
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var cnt = 0;
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var rootsize = 0, filesize = 0;
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out.push(" Length Date Time Name");
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out.push(" -------- ---- ---- ----");
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cfb.FileIndex.forEach(function(file, i) {
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switch(file.type) {
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case 5:
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basetime = file.ct || file.mt || basetime;
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rootsize = file.size;
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break;
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case 2:
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out.push(sprintf("%9lu %s %s", file.size, format_date(basetime), cfb.FullPaths[i]));
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filesize += file.size;
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++cnt;
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}
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});
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out.push(" -------- -------");
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out.push(sprintf("%9lu %lu file%s", rootsize || filesize, cnt, (cnt !== 1 ? "s" : "")));
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return out.join("\n");
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}
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function process_data(cfb) {
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var output = get_manifest(cfb);
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if(out.innerText === undefined) out.textContent = output
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else out.innerText = output;
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}
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var drop = document.getElementById('drop');
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function handleDrop(e) {
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e.stopPropagation();
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e.preventDefault();
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rABS = document.getElementsByName("userabs")[0].checked;
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var files = e.dataTransfer.files;
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var f = files[0];
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{
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var reader = new FileReader();
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//var name = f.name;
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reader.onload = function(e) {
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var data = e.target.result;
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var cfb;
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if(rABS) {
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cfb = CFB.read(data, {type: 'binary'});
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} else {
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var arr = fixdata(data);
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cfb = CFB.read(btoa(arr), {type: 'base64'});
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}
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process_data(cfb);
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};
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if(rABS) reader.readAsBinaryString(f);
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else reader.readAsArrayBuffer(f);
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}
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}
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function handleDragover(e) {
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e.stopPropagation();
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e.preventDefault();
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e.dataTransfer.dropEffect = 'copy';
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}
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if(drop.addEventListener) {
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drop.addEventListener('dragenter', handleDragover, false);
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drop.addEventListener('dragover', handleDragover, false);
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drop.addEventListener('drop', handleDrop, false);
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}
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</script>
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<script type="text/javascript">
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var _gaq = _gaq || [];
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_gaq.push(['_setAccount', 'UA-36810333-1']);
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_gaq.push(['_trackPageview']);
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(function() {
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var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true;
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ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js';
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var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s);
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})();
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</script>
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</body>
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</html>
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