forked from sheetjs/sheetjs
79 lines
2.3 KiB
JavaScript
79 lines
2.3 KiB
JavaScript
/* xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com */
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var SheetJSFT = [
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"xlsx", "xlsb", "xlsm", "xls", "xml", "csv", "txt", "ods", "fods", "uos", "sylk", "dif", "dbf", "prn", "qpw", "123", "wb*", "wq*", "html", "htm"
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].map(function(x) { return "." + x; }).join(",");
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var SJSTemplate = [
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'<div>',
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'<input type="file" multiple="false" id="sheetjs-input" accept="' + SheetJSFT + '" @change="onchange" />',
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'<br/>',
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'<button type="button" id="export-table" style="visibility:hidden" @click="onexport">Export to XLSX</button>',
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'<br/>',
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'<div id="out-table"></div>',
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'</div>'
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].join("");
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function s2ab(s) {
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if(typeof ArrayBuffer !== 'undefined') {
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var buf = new ArrayBuffer(s.length);
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var view = new Uint8Array(buf);
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for (var i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
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return buf;
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} else {
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var buf = new Array(s.length);
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for (var i=0; i!=s.length; ++i) buf[i] = s.charCodeAt(i) & 0xFF;
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return buf;
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}
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}
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Vue.component('html-preview', {
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template: SJSTemplate,
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methods: {
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onchange: function(evt) {
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var file;
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var files = evt.target.files;
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if (!files || files.length == 0) return;
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file = files[0];
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var reader = new FileReader();
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reader.onload = function (e) {
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// pre-process data
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var binary = "";
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var bytes = new Uint8Array(e.target.result);
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var length = bytes.byteLength;
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for (var i = 0; i < length; i++) {
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binary += String.fromCharCode(bytes[i]);
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}
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/* read workbook */
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var wb = XLSX.read(binary, {type: 'binary'});
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/* grab first sheet */
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var wsname = wb.SheetNames[0];
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var ws = wb.Sheets[wsname];
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/* generate HTML */
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var HTML = XLSX.utils.sheet_to_html(ws);
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/* update table */
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document.getElementById('out-table').innerHTML = HTML;
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/* show export button */
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document.getElementById('export-table').style.visibility = "visible";
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};
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reader.readAsArrayBuffer(file);
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},
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onexport: function(evt) {
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/* generate workbook object from table */
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var wb = XLSX.utils.table_to_book(document.getElementById('out-table'));
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/* get binary string as output */
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var wbout = XLSX.write(wb, { bookType: 'xlsx', type: 'binary' });
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/* force a download */
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saveAs(new Blob([s2ab(wbout)], { type: 'application/octet-stream' }), "sheetjs.xlsx");
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}
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}
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});
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