forked from sheetjs/sheetjs
105 lines
3.2 KiB
Vue
105 lines
3.2 KiB
Vue
<!-- xlsx.js (C) 2013-present SheetJS -- http://sheetjs.com -->
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<template>
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<div @drop="_drop" @dragenter="_suppress" @dragover="_suppress">
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<div class="row"><div class="col-xs-12">
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<form class="form-inline">
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<div class="form-group">
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<label for="file">Spreadsheet</label>
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<input type="file" class="form-control" id="file" :accept="SheetJSFT" @change="_change" />
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</div>
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</form>
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</div></div>
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<div class="row"><div class="col-xs-12">
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<button :disabled="data.length ? false : true" class="btn btn-success" @click="_export">Export</button>
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</div></div>
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<div class="row"><div class="col-xs-12">
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<div class="table-responsive">
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<table class="table table-striped">
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<thead><tr>
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<th v-for="c in cols" :key="c.key">{{c.name}}</th>
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</tr></thead>
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<tbody>
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<tr v-for="(r, key) in data" :key="key">
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<td v-for="c in cols" :key="c.key"> {{ r[c.key] }}</td>
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</tr>
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</tbody>
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</table>
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</div>
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</div></div>
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</div>
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</template>
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<script>
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const _XLSX = require('xlsx');
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const X = typeof XLSX !== 'undefined' ? XLSX : _XLSX;
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const make_cols = refstr => Array(X.utils.decode_range(refstr).e.c + 1).fill(0).map((x,i) => ({name:X.utils.encode_col(i), key:i}));
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/* see Browser download file example in docs */
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function s2ab(s) {
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const buf = new ArrayBuffer(s.length);
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const view = new Uint8Array(buf);
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for (let i=0; i!=s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
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return buf;
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}
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const _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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export default {
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data() {
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return {
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data: ["SheetJS".split(""), "1234567".split("")],
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cols: [
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{name:"A", key:0},
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{name:"B", key:1},
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{name:"C", key:2},
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{name:"D", key:3},
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{name:"E", key:4},
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{name:"F", key:5},
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{name:"G", key:6},
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],
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SheetJSFT: _SheetJSFT
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}; },
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methods: {
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_suppress(evt) { evt.stopPropagation(); evt.preventDefault(); },
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_drop(evt) {
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evt.stopPropagation(); evt.preventDefault();
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const files = evt.dataTransfer.files;
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if(files && files[0]) this._file(files[0]);
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},
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_change(evt) {
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const files = evt.target.files;
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if(files && files[0]) this._file(files[0]);
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},
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_export(evt) {
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/* convert state to workbook */
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const ws = X.utils.aoa_to_sheet(this.data);
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const wb = X.utils.book_new();
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X.utils.book_append_sheet(wb, ws, "SheetJS");
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/* generate X file */
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const wbout = X.write(wb, {type:"binary", bookType:"xlsx"});
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/* send to client */
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saveAs(new Blob([s2ab(wbout)],{type:"application/octet-stream"}), "sheetjs.xlsx");
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},
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_file(file) {
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/* Boilerplate to set up FileReader */
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const reader = new FileReader();
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reader.onload = (e) => {
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/* Parse data */
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const bstr = e.target.result;
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const wb = X.read(bstr, {type:'binary'});
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/* Get first worksheet */
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const wsname = wb.SheetNames[0];
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const ws = wb.Sheets[wsname];
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/* Convert array of arrays */
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const data = X.utils.sheet_to_json(ws, {header:1});
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/* Update state */
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this.data = data;
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this.cols = make_cols(ws['!ref']);
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};
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reader.readAsBinaryString(file);
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}
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}
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};
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</script>
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