Merge pull request #163 from sahilbansal17/js-directory-workflow

Fixes: #160

.github/workflows/UpdateDirectory.js

@@ -0,0 +1,108 @@
+// requiring path and fs modules
+const path = require('path');
+const fs = require('fs');
+
+let URL_BASE = "https://github.com/TheAlgorithms/Javascript/blob/master";
+let g_output = [];
+
+let filepaths = [];
+function good_filepaths(top_dir = ".") {
+  fs.readdir(top_dir, function(err, list) {
+    if (err) {
+      console.log(err);
+      return;
+    }
+    list.forEach(function(file) {
+      let path = top_dir + "/" + file;
+      if (!file.startsWith(".")) {
+        fs.stat(path, function(err, stat) {
+          if (stat && stat.isDirectory()) {
+            good_filepaths(path);
+          } else {
+            if (file.toLowerCase().endsWith(".js")) {
+              filepaths.push(path.slice(2));
+            }
+          }
+        });
+      }
+    });
+  })
+}
+
+function md_prefix(i) {
+  if (i) {
+    let res = '  '.repeat(i);
+    return res + "*";
+  } else {
+    return "\n##"
+  }
+}
+
+function print_path(old_path, new_path) {
+  let old_parts = old_path.split(path.sep);
+  let new_parts = new_path.split(path.sep);
+  for (let i = 0; i < new_parts.length; ++i) {
+    let new_part = new_parts[i];
+    if (i + 1 > old_parts.len || old_parts[i] != new_part) {
+      if (new_part) {
+        g_output.push(`${md_prefix(i)} ${new_part.replace('_', ' ')}`);
+      }
+    }
+  }
+  return new_path;
+}
+
+function build_directory_md(top_dir = ".") {
+  old_path = "";
+  filepaths.sort(function(a, b) {
+    if (a.toLowerCase() < b.toLowerCase()) return -1;
+    if (a.toLowerCase() > b.toLowerCase()) return 1;
+    return 0;
+  });
+  for (let filepath of filepaths) {
+    file = filepath.split(path.sep);
+    if (file.length == 1) {
+      filepath = "";
+      filename = file[0];
+    } else {
+      let total = file.length;
+      filename = file[total - 1];
+      filepath = file.splice(0, total - 1).join(path.sep);
+    }
+    if (filepath != old_path) {
+      old_path = print_path(old_path, filepath);
+    }
+    let indent = 0;
+    for (let i = 0; i < filepath.length; ++i) {
+      if (filepath[i] == path.sep) {
+        ++indent;
+      }
+    }
+    if (filepath) {
+      ++indent;
+    }
+    let urls = [URL_BASE, filepath, filename];
+    let url = urls.join("/").replace(" ", "%20");
+    // remove extension from filename
+    filename = filename.split(".")[0];
+    g_output.push(`${md_prefix(indent)} [${filename}](${url})`);
+  }
+  g_output = g_output.join('\n');
+  return g_output;
+}
+
+good_filepaths();
+setTimeout(() => {
+  // once the filepaths have been computed
+  build_directory_md();
+  // console.log(filepaths);
+}, 1000);
+setTimeout(() => {
+  // once the g_output has been constructed, write to the file
+  fs.writeFile('DIRECTORY.md', g_output + '\n', (err) => {
+    if (err) {
+      console.log(err);
+    }
+  })
+  // console.log(g_output);
+}, 1000);