feat: added 03_dom

02_advanced/uebungen/u27_zlip/index.js

@@ -0,0 +1,63 @@
+import fs from 'node:fs';
+import zlib from 'node:zlib';
+import color from 'chalk';
+
+const data = fs.readFileSync('data/products.csv', 'utf-8');
+
+const toCamelCase = (str) => {
+  return str
+    .trim()
+    .toLowerCase()
+    .replace(/[^a-zA-Z0-9]+(.)/g, (match, chr) => chr.toUpperCase());
+};
+
+const convertCsvToJson = (products, ar) => {
+  const resultAr = products.map((str) => {
+    const fields = str.split(/\s*,\s*/);
+
+    const labels = ar.map((label, idx) => {
+      return [label, isNaN(fields[idx]) ? fields[idx] : Number(fields[idx])];
+    });
+
+    const obj = Object.fromEntries(labels);
+
+    // console.log(labels); // Entries Array
+    //console.log(obj);
+
+    return obj;
+
+    // return {
+    //   [ar[0]]: fields[0],
+    //   [ar[1]]: fields[1],
+    //   [ar[2]]: fields[2],
+    //   [ar[3]]: Number(fields[3]),
+    //   [ar[4]]: Number(fields[4]),
+    // };
+  });
+  // console.log(resultAr);
+
+  const jsonStr = JSON.stringify(resultAr, '', 2);
+
+  fs.writeFile('products.json.gz', zlib.gzipSync(jsonStr), 'utf-8', (err) => {
+    if (err) {
+      console.log(err);
+    } else {
+      console.log(color.green('file created!'));
+    }
+  });
+};
+
+const productAr = data
+  .split('\n')
+  .map((row) => row.replace('\n', ''))
+  .filter((row) => row !== '');
+
+const headerAr = productAr
+  .shift()
+  .split(/\s*,\s*/)
+  .map(toCamelCase);
+
+// console.log('=======');
+// console.log(productAr);
+
+convertCsvToJson(productAr, headerAr);