功能调整
tianea
2 years ago
parent
9a12778229
commit
8fb6782f86
@ -0,0 +1,220 @@
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/* eslint-disable */
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import { saveAs } from 'file-saver'
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import * as XLSX from 'xlsx'
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function generateArray(table) {
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var out = [];
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var rows = table.querySelectorAll('tr');
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var ranges = [];
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for (var R = 0; R < rows.length; ++R) {
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var outRow = [];
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var row = rows[R];
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var columns = row.querySelectorAll('td');
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for (var C = 0; C < columns.length; ++C) {
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var cell = columns[C];
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var colspan = cell.getAttribute('colspan');
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var rowspan = cell.getAttribute('rowspan');
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var cellValue = cell.innerText;
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if (cellValue !== "" && cellValue == +cellValue) cellValue = +cellValue;
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//Skip ranges
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ranges.forEach(function (range) {
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if (R >= range.s.r && R <= range.e.r && outRow.length >= range.s.c && outRow.length <= range.e.c) {
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for (var i = 0; i <= range.e.c - range.s.c; ++i) outRow.push(null);
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}
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});
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//Handle Row Span
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if (rowspan || colspan) {
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rowspan = rowspan || 1;
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colspan = colspan || 1;
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ranges.push({
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s: {
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r: R,
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c: outRow.length
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},
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e: {
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r: R + rowspan - 1,
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c: outRow.length + colspan - 1
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}
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});
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};
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//Handle Value
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outRow.push(cellValue !== "" ? cellValue : null);
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//Handle Colspan
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if (colspan)
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for (var k = 0; k < colspan - 1; ++k) outRow.push(null);
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}
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out.push(outRow);
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}
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return [out, ranges];
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};
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function datenum(v, date1904) {
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if (date1904) v += 1462;
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var epoch = Date.parse(v);
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return (epoch - new Date(Date.UTC(1899, 11, 30))) / (24 * 60 * 60 * 1000);
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}
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function sheet_from_array_of_arrays(data, opts) {
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var ws = {};
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var range = {
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s: {
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c: 10000000,
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r: 10000000
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},
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e: {
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c: 0,
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r: 0
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}
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};
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for (var R = 0; R != data.length; ++R) {
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for (var C = 0; C != data[R].length; ++C) {
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if (range.s.r > R) range.s.r = R;
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if (range.s.c > C) range.s.c = C;
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if (range.e.r < R) range.e.r = R;
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if (range.e.c < C) range.e.c = C;
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var cell = {
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v: data[R][C]
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};
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if (cell.v == null) continue;
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var cell_ref = XLSX.utils.encode_cell({
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c: C,
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r: R
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});
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if (typeof cell.v === 'number') cell.t = 'n';
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else if (typeof cell.v === 'boolean') cell.t = 'b';
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else if (cell.v instanceof Date) {
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cell.t = 'n';
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cell.z = XLSX.SSF._table[14];
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cell.v = datenum(cell.v);
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} else cell.t = 's';
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ws[cell_ref] = cell;
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}
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}
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if (range.s.c < 10000000) ws['!ref'] = XLSX.utils.encode_range(range);
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return ws;
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}
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function Workbook() {
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if (!(this instanceof Workbook)) return new Workbook();
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this.SheetNames = [];
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this.Sheets = {};
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}
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function s2ab(s) {
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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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}
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export function export_table_to_excel(id) {
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var theTable = document.getElementById(id);
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var oo = generateArray(theTable);
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var ranges = oo[1];
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/* original data */
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var data = oo[0];
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var ws_name = "SheetJS";
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var wb = new Workbook(),
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ws = sheet_from_array_of_arrays(data);
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/* add ranges to worksheet */
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// ws['!cols'] = ['apple', 'banan'];
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ws['!merges'] = ranges;
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/* add worksheet to workbook */
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wb.SheetNames.push(ws_name);
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wb.Sheets[ws_name] = ws;
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var wbout = XLSX.write(wb, {
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bookType: 'xlsx',
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bookSST: false,
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type: 'binary'
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});
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saveAs(new Blob([s2ab(wbout)], {
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type: "application/octet-stream"
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}), "test.xlsx")
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}
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export function export_json_to_excel({
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multiHeader = [],
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header,
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data,
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filename,
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merges = [],
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autoWidth = true,
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bookType = 'xlsx'
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} = {}) {
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/* original data */
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filename = filename || 'excel-list'
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data = [...data]
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data.unshift(header);
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for (let i = multiHeader.length - 1; i > -1; i--) {
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data.unshift(multiHeader[i])
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}
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var ws_name = "SheetJS";
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var wb = new Workbook(),
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ws = sheet_from_array_of_arrays(data);
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if (merges.length > 0) {
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if (!ws['!merges']) ws['!merges'] = [];
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merges.forEach(item => {
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ws['!merges'].push(XLSX.utils.decode_range(item))
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})
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}
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if (autoWidth) {
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/*设置worksheet每列的最大宽度*/
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const colWidth = data.map(row => row.map(val => {
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/*先判断是否为null/undefined*/
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if (val == null) {
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return {
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'wch': 10
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};
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}
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/*再判断是否为中文*/
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else if (val.toString().charCodeAt(0) > 255) {
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return {
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'wch': val.toString().length * 2
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};
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} else {
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return {
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'wch': val.toString().length
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};
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}
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}))
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/*以第一行为初始值*/
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let result = colWidth[0];
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for (let i = 1; i < colWidth.length; i++) {
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for (let j = 0; j < colWidth[i].length; j++) {
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if (result[j]['wch'] < colWidth[i][j]['wch']) {
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result[j]['wch'] = colWidth[i][j]['wch'];
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}
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}
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}
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ws['!cols'] = result;
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}
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/* add worksheet to workbook */
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wb.SheetNames.push(ws_name);
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wb.Sheets[ws_name] = ws;
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var wbout = XLSX.write(wb, {
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bookType: bookType,
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bookSST: false,
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type: 'binary'
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});
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saveAs(new Blob([s2ab(wbout)], {
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type: "application/octet-stream"
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}), `${filename}.${bookType}`);
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}
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