mirror of
https://github.com/crmeb/CRMEB.git
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79 lines
2.8 KiB
JavaScript
79 lines
2.8 KiB
JavaScript
// +----------------------------------------------------------------------
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// | CRMEB [ CRMEB赋能开发者，助力企业发展 ]
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// +----------------------------------------------------------------------
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// | Copyright (c) 2016~2021 https://www.crmeb.com All rights reserved.
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// +----------------------------------------------------------------------
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// | Licensed CRMEB并不是自由软件，未经许可不能去掉CRMEB相关版权
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// +----------------------------------------------------------------------
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// | Author: CRMEB Team <admin@crmeb.com>
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// +----------------------------------------------------------------------
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import { saveAs } from 'file-saver'
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import XLSX from 'xlsx'
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function datenum (v, date1904) {
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if (date1904) v += 1462
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let 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 data2ws (data) {
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const ws = {}
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const range = { s: { c: 10000000, r: 10000000 }, e: { c: 0, r: 0 } }
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for (let R = 0; R !== data.length; ++R) {
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for (let 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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const cell = { v: data[R][C] }
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if (cell.v == null) continue
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const cellRef = XLSX.utils.encode_cell({ c: C, r: R })
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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[cellRef] = 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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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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/*
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* th => 表头
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* data => 数据
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* fileName => 文件名
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* fileType => 文件类型
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* sheetName => sheet页名
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*/
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export default function toExcel ({ th, data, fileName, fileType, sheetName }) {
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data.unshift(th)
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let wb = new Workbook()
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let ws = data2ws(data)
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sheetName = sheetName || 'sheet1'
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wb.SheetNames.push(sheetName)
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wb.Sheets[sheetName] = ws
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fileType = fileType || 'xlsx'
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let wbout = XLSX.write(wb, { bookType: fileType, bookSST: false, type: 'binary' })
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fileName = fileName || '列表'
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saveAs(new Blob([s2ab(wbout)], { type: 'application/octet-stream' }), `${fileName}.${fileType}`)
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}
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