csv-transpose/cli/main.js

Transpose (rotate) data from rows to columns or vice verse in csv

"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
const fs = require("fs");
const path = require("path");
const core_1 = require("../lib/core");
function main(selfFile, ext) {
    let separator = ',';
    if (ext === 'tsv') {
        separator = '\t';
    }
    let inFilename;
    let outFilename;
    for (let i = 0, len = process.argv.length; i < len; i++) {
        let arg = process.argv[i];
        if (arg === '-o' || arg === '--output') {
            i++;
            outFilename = process.argv[i];
        }
        else if (arg === '-i' || arg === '--input') {
            i++;
            inFilename = process.argv[i];
        }
        else if (arg === '-h' || arg === '--help') {
            let file = path.basename(selfFile);
            console.log(`Example with file: ${file} -i in.${ext} -o out.${ext}`);
            console.log(`Example with pipe: cat in.${ext} | ${file} > out.${ext}`);
            return;
        }
    }
    let input;
    if (inFilename) {
        input = fs.readFileSync(inFilename).toString();
    }
    else {
        input = fs.readFileSync(0).toString();
    }
    if (!input) {
        console.error('Error: input is empty!');
        process.exit(1);
    }
    let output = (0, core_1.transpose)(input, separator);
    if (outFilename) {
        fs.writeFileSync(outFilename, output);
        console.error('saved to', outFilename);
    }
    else {
        process.stdout.write(output);
    }
}
module.exports = main;