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lemon橪
360
node_modules/_vue-json-excel@0.3.0@vue-json-excel/JsonExcel.vue
generated
vendored
Executable file
360
node_modules/_vue-json-excel@0.3.0@vue-json-excel/JsonExcel.vue
generated
vendored
Executable file
@@ -0,0 +1,360 @@
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<template>
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<div :id="idName" @click="generate">
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<slot> Download {{ name }} </slot>
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</div>
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</template>
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<script>
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import download from "downloadjs";
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export default {
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props: {
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// mime type [xls, csv]
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type: {
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type: String,
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default: "xls",
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},
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// Json to download
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data: {
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type: Array,
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required: false,
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default: null,
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},
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// fields inside the Json Object that you want to export
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// if no given, all the properties in the Json are exported
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fields: {
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type: Object,
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default: () => null,
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},
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// this prop is used to fix the problem with other components that use the
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// variable fields, like vee-validate. exportFields works exactly like fields
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exportFields: {
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type: Object,
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default: () => null,
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},
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// Use as fallback when the row has no field values
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defaultValue: {
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type: String,
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required: false,
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default: "",
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},
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// Title(s) for the data, could be a string or an array of strings (multiple titles)
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header: {
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default: null,
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},
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// Footer(s) for the data, could be a string or an array of strings (multiple footers)
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footer: {
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default: null,
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},
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// filename to export
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name: {
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type: String,
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default: "data.xls",
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},
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fetch: {
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type: Function,
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},
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meta: {
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type: Array,
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default: () => [],
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},
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worksheet: {
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type: String,
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default: "Sheet1",
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},
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//event before generate was called
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beforeGenerate: {
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type: Function,
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},
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//event before download pops up
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beforeFinish: {
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type: Function,
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},
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// Determine if CSV Data should be escaped
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escapeCsv: {
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type: Boolean,
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default: true,
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},
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// long number stringify
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stringifyLongNum: {
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type: Boolean,
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default: false,
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},
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},
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computed: {
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// unique identifier
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idName() {
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var now = new Date().getTime();
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return "export_" + now;
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},
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downloadFields() {
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if (this.fields) return this.fields;
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if (this.exportFields) return this.exportFields;
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},
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},
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methods: {
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async generate() {
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if (typeof this.beforeGenerate === "function") {
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await this.beforeGenerate();
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}
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let data = this.data;
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if (typeof this.fetch === "function" || !data) data = await this.fetch();
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if (!data || !data.length) {
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return;
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}
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let json = this.getProcessedJson(data, this.downloadFields);
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if (this.type === "html") {
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// this is mainly for testing
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return this.export(
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this.jsonToXLS(json),
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this.name.replace(".xls", ".html"),
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"text/html"
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);
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} else if (this.type === "csv") {
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return this.export(
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this.jsonToCSV(json),
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this.name.replace(".xls", ".csv"),
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"application/csv"
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);
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}
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return this.export(
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this.jsonToXLS(json),
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this.name,
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"application/vnd.ms-excel"
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);
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},
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/*
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Use downloadjs to generate the download link
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*/
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export: async function (data, filename, mime) {
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let blob = this.base64ToBlob(data, mime);
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if (typeof this.beforeFinish === "function") await this.beforeFinish();
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download(blob, filename, mime);
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},
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/*
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jsonToXLS
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---------------
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Transform json data into an xml document with MS Excel format, sadly
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it shows a prompt when it opens, that is a default behavior for
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Microsoft office and cannot be avoided. It's recommended to use CSV format instead.
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*/
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jsonToXLS(data) {
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let xlsTemp =
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'<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><meta name=ProgId content=Excel.Sheet> <meta name=Generator content="Microsoft Excel 11"><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>${worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--><style>br {mso-data-placement: same-cell;}</style></head><body><table>${table}</table></body></html>';
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let xlsData = "<thead>";
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const colspan = Object.keys(data[0]).length;
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let _self = this;
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//Header
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const header = this.header || this.$attrs.title;
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if (header) {
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xlsData += this.parseExtraData(
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header,
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'<tr><th colspan="' + colspan + '">${data}</th></tr>'
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);
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}
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//Fields
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xlsData += "<tr>";
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for (let key in data[0]) {
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xlsData += "<th>" + key + "</th>";
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}
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xlsData += "</tr>";
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xlsData += "</thead>";
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//Data
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xlsData += "<tbody>";
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data.map(function (item, index) {
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xlsData += "<tr>";
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for (let key in item) {
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xlsData +=
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"<td>" +
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_self.preprocessLongNum(
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_self.valueReformattedForMultilines(item[key])
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) +
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"</td>";
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}
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xlsData += "</tr>";
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});
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xlsData += "</tbody>";
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//Footer
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if (this.footer != null) {
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xlsData += "<tfoot>";
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xlsData += this.parseExtraData(
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this.footer,
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'<tr><td colspan="' + colspan + '">${data}</td></tr>'
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);
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xlsData += "</tfoot>";
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}
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return xlsTemp
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.replace("${table}", xlsData)
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.replace("${worksheet}", this.worksheet);
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},
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/*
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jsonToCSV
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---------------
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Transform json data into an CSV file.
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*/
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jsonToCSV(data) {
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let _self = this;
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var csvData = [];
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//Header
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const header = this.header || this.$attrs.title;
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if (header) {
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csvData.push(this.parseExtraData(header, "${data}\r\n"));
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}
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//Fields
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for (let key in data[0]) {
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csvData.push(key);
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csvData.push(",");
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}
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csvData.pop();
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csvData.push("\r\n");
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//Data
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data.map(function (item) {
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for (let key in item) {
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let escapedCSV = item[key] + "";
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// Escaped CSV data to string to avoid problems with numbers or other types of values
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// this is controlled by the prop escapeCsv
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if (_self.escapeCsv) {
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escapedCSV = '="' + escapedCSV + '"'; // cast Numbers to string
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if (escapedCSV.match(/[,"\n]/)) {
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escapedCSV = '"' + escapedCSV.replace(/\"/g, '""') + '"';
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}
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}
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csvData.push(escapedCSV);
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csvData.push(",");
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}
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csvData.pop();
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csvData.push("\r\n");
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});
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//Footer
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if (this.footer != null) {
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csvData.push(this.parseExtraData(this.footer, "${data}\r\n"));
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}
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return csvData.join("");
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},
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/*
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getProcessedJson
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---------------
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Get only the data to export, if no fields are set return all the data
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*/
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getProcessedJson(data, header) {
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let keys = this.getKeys(data, header);
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let newData = [];
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let _self = this;
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data.map(function (item, index) {
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let newItem = {};
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for (let label in keys) {
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let property = keys[label];
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newItem[label] = _self.getValue(property, item);
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}
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newData.push(newItem);
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});
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return newData;
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},
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getKeys(data, header) {
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if (header) {
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return header;
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}
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let keys = {};
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for (let key in data[0]) {
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keys[key] = key;
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}
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return keys;
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},
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/*
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parseExtraData
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---------------
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Parse title and footer attribute to the csv format
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*/
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parseExtraData(extraData, format) {
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let parseData = "";
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if (Array.isArray(extraData)) {
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for (var i = 0; i < extraData.length; i++) {
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if (extraData[i])
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parseData += format.replace("${data}", extraData[i]);
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}
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} else {
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parseData += format.replace("${data}", extraData);
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}
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return parseData;
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},
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getValue(key, item) {
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const field = typeof key !== "object" ? key : key.field;
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let indexes = typeof field !== "string" ? [] : field.split(".");
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let value = this.defaultValue;
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if (!field) value = item;
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else if (indexes.length > 1)
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value = this.getValueFromNestedItem(item, indexes);
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else value = this.parseValue(item[field]);
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if (key.hasOwnProperty("callback"))
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value = this.getValueFromCallback(value, key.callback);
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return value;
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},
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/*
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convert values with newline \n characters into <br/>
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*/
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valueReformattedForMultilines(value) {
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if (typeof value == "string") return value.replace(/\n/gi, "<br/>");
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else return value;
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},
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preprocessLongNum(value) {
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if (this.stringifyLongNum) {
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if (String(value).startsWith("0x")) {
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return value;
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}
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if (!isNaN(value) && value != "") {
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if (value > 99999999999 || value < 0.0000000000001) {
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return '="' + value + '"';
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}
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}
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}
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return value;
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},
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getValueFromNestedItem(item, indexes) {
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let nestedItem = item;
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for (let index of indexes) {
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if (nestedItem) nestedItem = nestedItem[index];
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}
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return this.parseValue(nestedItem);
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},
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getValueFromCallback(item, callback) {
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if (typeof callback !== "function") return this.defaultValue;
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const value = callback(item);
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return this.parseValue(value);
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},
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parseValue(value) {
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return value || value === 0 || typeof value === "boolean"
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? value
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: this.defaultValue;
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},
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base64ToBlob(data, mime) {
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let base64 = window.btoa(window.unescape(encodeURIComponent(data)));
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let bstr = atob(base64);
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let n = bstr.length;
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let u8arr = new Uint8ClampedArray(n);
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while (n--) {
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u8arr[n] = bstr.charCodeAt(n);
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}
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return new Blob([u8arr], { type: mime });
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},
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}, // end methods
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};
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</script>
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