Pen Settings

HTML

CSS

CSS Base

Vendor Prefixing

Add External Stylesheets/Pens

Any URL's added here will be added as <link>s in order, and before the CSS in the editor. If you link to another Pen, it will include the CSS from that Pen. If the preprocessor matches, it will attempt to combine them before processing.

+ add another resource

JavaScript

Babel is required to process package imports. If you need a different preprocessor remove all packages first.

Add External Scripts/Pens

Any URL's added here will be added as <script>s in order, and run before the JavaScript in the editor. You can use the URL of any other Pen and it will include the JavaScript from that Pen.

+ add another resource

Behavior

Save Automatically?

If active, Pens will autosave every 30 seconds after being saved once.

Auto-Updating Preview

If enabled, the preview panel updates automatically as you code. If disabled, use the "Run" button to update.

Format on Save

If enabled, your code will be formatted when you actively save your Pen. Note: your code becomes un-folded during formatting.

Editor Settings

Code Indentation

Want to change your Syntax Highlighting theme, Fonts and more?

Visit your global Editor Settings.

HTML

              
                <!DOCTYPE html>
<html>
  <head>
    <meta charset="UTF-8" />

    <title>title</title>
  </head>
  <body>
    Select file
    <input type="file" id="fileinput" />

    <br />
    <br />
    Flat output
    <pre
      style=" max-height: 500px; overflow: auto; border: 1px solid black; min-height: 100px "
    ><code id="outputflat"></code></pre>

    <br />
    <br />
    <br />
    <br />
    Tree output
    <pre
      style=" max-height: 500px; overflow: auto; border: 1px solid black; min-height: 100px "
    ><code id="outputastree"></code></pre>

    <script>
      function handleFileSelect(evt) {
        var files = evt.target.files; // FileList object

        // files is a FileList of File objects. List some properties.
        // var output = [];
        for (var i = 0, f; (f = files[i]); i++) {
          if (!f.type.match("text/csv")) {
            continue;
          }

          var reader = new FileReader();

          // Closure to capture the file information.
          reader.onload = (function(theFile) {
            return function(e) {
              // Render thumbnail.
              // var span = document.createElement('span');
              // span.innerHTML = ['<img class="thumb" src="', e.target.result,
              //                   '" title="', escape(theFile.name), '"/>'].join('');
              // document.getElementById('list').insertBefore(span, null);
              // console.log("Got file text");
              // console.log(e.target.result);

              convertData(e.target.result);
            };
          })(f);

          // Read in the image file as a data URL.
          reader.readAsText(f);

          //   output.push(
          //     "<li><strong>",
          //     escape(f.name),
          //     "</strong> (",
          //     f.type || "n/a",
          //     ") - ",
          //     f.size,
          //     " bytes, last modified: ",
          //     f.lastModifiedDate
          //       ? f.lastModifiedDate.toLocaleDateString()
          //       : "n/a",
          //     "</li>"
          //   );
        }
        // document.getElementById("list").innerHTML =
        //   "<ul>" + output.join("") + "</ul>";
      }

      document
        .getElementById("fileinput")
        .addEventListener("change", handleFileSelect, false);

      function convertData(text) {
        function CSVToArray(text) {
          var re_valid = /^\s*(?:'[^'\\]*(?:\\[\S\s][^'\\]*)*'|"[^"\\]*(?:\\[\S\s][^"\\]*)*"|[^,'"\s\\]*(?:\s+[^,'"\s\\]+)*)\s*(?:,\s*(?:'[^'\\]*(?:\\[\S\s][^'\\]*)*'|"[^"\\]*(?:\\[\S\s][^"\\]*)*"|[^,'"\s\\]*(?:\s+[^,'"\s\\]+)*)\s*)*$/;
          var re_value = /(?!\s*$)\s*(?:'([^'\\]*(?:\\[\S\s][^'\\]*)*)'|"([^"\\]*(?:\\[\S\s][^"\\]*)*)"|([^,'"\s\\]*(?:\s+[^,'"\s\\]+)*))\s*(?:,|$)/g;
          // Return NULL if input string is not well formed CSV string.
          if (!re_valid.test(text)) return null;
          var a = []; // Initialize array to receive values.
          text.replace(
            re_value, // "Walk" the string using replace with callback.
            function(m0, m1, m2, m3) {
              // Remove backslash from \' in single quoted values.
              if (m1 !== undefined) a.push(m1.replace(/\\'/g, "'"));
              // Remove backslash from \" in double quoted values.
              else if (m2 !== undefined) a.push(m2.replace(/\\"/g, '"'));
              else if (m3 !== undefined) a.push(m3);
              return ""; // Return empty string.
            }
          );
          // Handle special case of empty last value.
          if (/,\s*$/.test(text)) a.push("");
          return a;
        }

        // const csvData = text.split(/\r?\n/).map(row => row.split("\,"));
        const csvData = text.split(/\r?\n/).map(row => CSVToArray(row));

        const root = {
          children: {},
          parent: null
        };
        let maxDepth = 0;

        // console.log(csvData);
        for (let r = 1; r < csvData.length; r += 1) {
          const row = csvData[r];
          let nextNode = root;
          let currentPath = [];
          for (let c = 0; c < row.length; c += 1) {
            const col = row[c];
            if (col.length === 0) {
              continue;
            }
            currentPath.push(col);
            if (!nextNode.children[col]) {
              nextNode.children[col] = {
                title: col,
                children: {},
                path: [...currentPath],
                depth: currentPath.length - 1,
                parent: nextNode,
                position: Object.keys(nextNode.children).length + 1
              };
              if (currentPath.length - 1 > maxDepth) {
                maxDepth = currentPath.length - 1;
              }
            }
            nextNode = nextNode.children[col];
          }
        }

        // console.log(allItems);
        // console.log(root);
        const rootAsJson = JSON.stringify(
          root,
          (key, obj) => {
            // console.log(key, obj);
            if (key === "parent") {
              if (!obj || !obj.path) {
                return null;
              }
              return obj.path.join(" > ");
            }
            return obj;
          },
          3
        );
        // console.log(rootAsJson);

        // const out = Object.values(allItems)
        document.getElementById("outputastree").innerHTML = rootAsJson;

        function pad(n) {
          let s = String(n);
          while (s.length < 4) {
            s = "0" + s;
          }
          return s;
        }

        const flatList = [];
        function traverseNode(node) {
          node.id = 0;
          let parent = node;
          let nodeDepth = node.depth;
          while (parent) {
            if (typeof parent.position === "number") {
              let p = parent.position;
              for (let i = nodeDepth; i > parent.depth; i -= 1) {
                p = p * 1000;
              }
              node.id += p;
            }
            parent = parent.parent;
          }
          flatList.push({
            id: node.id,
            label: node.title,
            title: node.title,
            value: node.path.join(" > "),
            position: node.position,
            parent: node.parent.id
          });
          Object.values(node.children).map(traverseNode);
        }

        Object.values(root.children).map(traverseNode);

        document.getElementById("outputflat").innerHTML = JSON.stringify(
          flatList,
          null,
          3
        );
      }
    </script>
  </body>
</html>

              
            
!

CSS

              
                
              
            
!

JS

              
                
              
            
!
999px

Console