tools/tablegenerator.html at main · MaSp005/tools · GitHub

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<!DOCTYPE html>
<html>

<head>
  <meta charset="utf-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <title>Table Generator</title>
  <meta name="description" content="A little tools to generate tables out of JSON or CSV files!">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="stylesheet" href="/css/global.css">
  <style>
    table {
      border-collapse: collapse;
      width: 100%;
    }

    td {
      border: 1px solid #ddd;
      padding: 8px;
    }

    thead {
      background-color: #ddd;
      color: black;
      font-weight: bold;
    }

    prog {
      display: none
    }
  </style>
  <meta content="Table Generator" property="og:title" />
  <meta content="A little tools to generate tables out of JSON or CSV files!" property="og:description" />
  <meta content="https://masp005.dev/tools/tablegenerator.png" property="og:image" />
  <meta content="#923cb1" data-react-helmet="true" name="theme-color" />
</head>

<body>
  <main style="text-align: center;">
    <p>Enter an Array of JSON objects or a CSV file and hit "Generate" to turn it into a table</p>
    <select id="type">
      <option value="json">JSON</option>
      <option value="csv">CSV</option>
    </select><br>
    <textarea id="json"></textarea><br>
    <p>or select a JSON / CSV file here</p>
    <input type="file" id="upload"><br>
    <prog></prog><br><br>
    <button onclick="gen()">Generate</button><br><br>
    <p id="error"></p>
    <table></table>
  </main>
  <script>
    document.querySelector("#upload").addEventListener('change', function () {
      // files that user has chosen
      var all_files = this.files;
      if (all_files.length == 0) {
        alert('Error : No file selected');
        return;
      }
      var file = all_files[0];
      var allowed_types = ['application/json', 'text/csv'];
      if (!allowed_types.includes(file.type)) {
        return document.getElementById("error").innerHTML = 'Error: Incorrect file type';
      }
      // var max_size_allowed = 2 * 1024 * 1024
      // if (file.size > max_size_allowed) {
      //   return document.getElementById("error").innerHTML = 'Error: Exceeded size 2MB';
      // }

      var reader = new FileReader();
      reader.addEventListener('load', function (e) {
        document.getElementById("json").value = e.target.result;
        document.getElementById("type").value = file.type.split("/")[1];
        gen();
      });
      reader.addEventListener('progress', function (e) {
        if (e.lengthComputable == true) {
          document.querySelector("prog").innerHTML = Math.floor((e.loaded / e.total) * 100) + "%";
          document.querySelector("prog").style.display = 'block';
        }
      });
      reader.addEventListener('error', function () {
        return document.getElementById("error").innerHTML = 'Error : Failed to read file';
      });
      reader.readAsText(file);
    });

    function gen() {
      var raw = document.getElementById("json").value;
      let data = [];
      let type = document.getElementById("type").value;

      if (type == "json") {
        try { data = JSON.parse(raw); }
        catch (e) { return document.getElementById("error").innerHTML = "Invalid JSON: " + e; }
        console.log(data, data.constructor.name);
        if (data.constructor.name !== "Array") return document.getElementById("error").innerHTML = "JSON must be Array of Objects";
        document.getElementById("error").innerHTML = "";

        var table = document.getElementsByTagName("table")[0];
        table.innerHTML = "";

        let headings = new Set();
        data.forEach(i => Object.keys(i).forEach(j => headings.add(j)))
        headings = Array.from(headings);

        var thead = document.createElement("thead");
        headings.forEach(i => {
          var row = document.createElement("td");
          row.innerHTML = i;
          thead.appendChild(row);
        })
        table.appendChild(thead);

        var tbody = document.createElement("tbody");
        data.forEach(i => {
          var row = document.createElement("tr");
          headings.forEach(j => {
            var cell = document.createElement("td");
            cell.innerHTML = i[j] || "";
            row.appendChild(cell);
          })
          tbody.appendChild(row);
        })
        table.appendChild(tbody);
      } else if (type == "csv") {
        document.getElementById("error").innerHTML = "";

        var table = document.getElementsByTagName("table")[0];
        table.innerHTML = "";
        var lines = raw.split("\n").filter(i => !i.startsWith("#") && i);
        let headings = lines[0].split(",");
        lines.shift();
        var thead = document.createElement("thead");
        headings.forEach(i => {
          var row = document.createElement("td");
          row.innerHTML = i;
          thead.appendChild(row);
        })
        table.appendChild(thead);

        var tbody = document.createElement("tbody");
        lines.forEach(i => {
          var row = document.createElement("tr");
          let col = i.split(",");
          col.forEach((j, k) => {
            if (j.startsWith('"')) {
              col[k] += "," + col[k + 1];
              col[k] = col[k].replace(/"/g, "");
            }
            if (j.endsWith('"')) col.splice(k, 1);
          })
          col.forEach(j => {
            var cell = document.createElement("td");
            cell.innerHTML = j;
            row.appendChild(cell);
          })
          tbody.appendChild(row);
        })
        table.appendChild(tbody);
      }
    }
  </script>
</body>

</html>