project files added

2021-06-15 16:00:08 +02:00
parent e156e2f053
commit db46afa351
13928 changed files with 1569902 additions and 0 deletions
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+#!/usr/bin/env node
+
+'use strict';
+
+var os = require('os');
+var pidtree = require('..');
+
+function help() {
+  var help = `  Usage
+    $ pidtree <ppid>
+
+  Options
+    --list                     To print the pids as a list.
+
+  Examples
+    $ pidtree
+    $ pidtree --list
+    $ pidtree 1
+    $ pidtree 1 --list
+`;
+  console.log(help);
+}
+
+function list(ppid) {
+  pidtree(ppid === undefined ? -1 : ppid, function(err, list) {
+    if (err) {
+      console.error(err.message);
+      return;
+    }
+    console.log(list.join(os.EOL));
+  });
+}
+
+function tree(ppid) {
+  pidtree(ppid, {advanced: true}, function(err, list) {
+    if (err) {
+      console.error(err.message);
+      return;
+    }
+
+    var parents = {}; // Hash Map of parents
+    var tree = {}; // Adiacency Hash Map
+    while (list.length > 0) {
+      var e = list.pop();
+      if (tree[e.ppid]) {
+        tree[e.ppid].push(e.pid);
+      } else {
+        tree[e.ppid] = [e.pid];
+      }
+      if (ppid === -1) {
+        parents[e.pid] = e.ppid;
+      }
+    }
+    var roots = [ppid];
+    if (ppid === -1) {
+      // Get all the roots
+      roots = Object.keys(tree).filter(node => parents[node] === undefined);
+    }
+
+    roots.forEach(root => print(tree, root));
+  });
+
+  function print(tree, start) {
+    function printBranch(node, branch) {
+      const isGraphHead = branch.length === 0;
+      const children = tree[node] || [];
+
+      let branchHead = '';
+      if (!isGraphHead) {
+        branchHead = children.length > 0 ? '┬ ' : '─ ';
+      }
+
+      console.log(`${branch}${branchHead}${node}`);
+
+      var baseBranch = branch;
+      if (!isGraphHead) {
+        const isChildOfLastBranch = branch.slice(-2) === '└─';
+        baseBranch = branch.slice(0, -2) + (isChildOfLastBranch ? '  ' : '| ');
+      }
+
+      const nextBranch = baseBranch + '├─';
+      const lastBranch = baseBranch + '└─';
+      children.forEach((child, index) => {
+        printBranch(
+          child,
+          children.length - 1 === index ? lastBranch : nextBranch
+        );
+      });
+    }
+
+    printBranch(start, '');
+  }
+}
+
+function run() {
+  var flag;
+  var ppid;
+  for (var i = 2; i < process.argv.length; i++) {
+    if (process.argv[i].startsWith('--')) {
+      flag = process.argv[i];
+    } else {
+      ppid = process.argv[i];
+    }
+  }
+  if (ppid === undefined) {
+    ppid = -1;
+  }
+
+  if (flag === '--list') list(ppid);
+  else if (flag === undefined) tree(ppid);
+  else help();
+}
+
+run();