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Add function for excel2json for exported with file and data json object

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This commit is contained in:
Sambo Chea
2021-03-29 19:47:35 +07:00
parent d5c75e8644
commit af96b1c305
3 changed files with 107 additions and 66 deletions
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72
examples/excel2json/index.js
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@@ -1,68 +1,8 @@
const XLSX = require("xlsx");
const fs = require("fs");
// import excel2json module
const excel2json = require("./excel2json");
const NAME = process.env.APP_NAME || "excel2json";
console.log("App Name =>", NAME);
// called function export excel2json
const exported = excel2json();
// load from env
const INPUT_FILE = process.env.INPUT_FILE || "./data/people.xlsx";
const OUTPUT_PATH = process.env.OUTPUT_PATH || "./data/outputs";
const MAPPER_FILE = process.env.MAPPER_FILE || "./data/mapper.json";
const SHEET_NAME = process.env.SHEET_NAME || "Sheet1";
const ENCODING = process.env.ENCODING || "utf-8";
// get mapper in string
var mapperString = undefined;
try {
mapperString = fs.readFileSync(MAPPER_FILE, { encoding: ENCODING }, (err) => {
if (err) {
console.error(err);
}
console.log("Load file suceed =>", MAPPER_FILE);
});
} catch (err) {
console.error("read file error", err)
}
// convert mapper from string to json object
const mapperJson = mapperString ? JSON.parse(mapperString) : {};
const configs = mapperJson.configs || {};
const columsData = mapperJson.data || undefined;
// read workbook from excel file
const wb = XLSX.readFile(configs.inputFile || INPUT_FILE);
const xlData = XLSX.utils.sheet_to_json(wb.Sheets[configs.sheetName || SHEET_NAME]);
// mapping the data from read excel file
const data = xlData.map((row) => {
if (columsData == undefined || !columsData) {
return row;
}
var _r = {};
columsData.map((col) => {
_r[col.label] = row[col.dataIndex];
});
return _r;
});
console.log("Data read from excel and mapped\n", data);
// parse a new path
const outputPath = configs.outputPath || OUTPUT_PATH
// check directory and create it if not exist
if (!fs.existsSync(outputPath)) {
fs.mkdirSync(outputPath, { recursive: true });
}
// write to file
fs.writeFileSync(
`${outputPath}/${configs.outputName || 'exported'}_${new Date().getTime()}.json`,
JSON.stringify(data),
(err) => {
if (err) throw err;
console.log("Write succeed!");
}
);
// output data from exported
console.log("Output =>\n", exported);