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