update socials section
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128
node_modules/pidtree/bin/pidtree.js
generated
vendored
Executable file
128
node_modules/pidtree/bin/pidtree.js
generated
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Executable file
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#!/usr/bin/env node
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'use strict';
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var os = require('os');
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var pidtree = require('..');
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// The method startsWith is not defined on string objects in node 0.10
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// eslint-disable-next-line no-extend-native
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String.prototype.startsWith = function(suffix) {
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return this.substring(0, suffix.length) === suffix;
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};
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function help() {
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var help =
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' Usage\n' +
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' $ pidtree <ppid>\n' +
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'\n' +
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'Options\n' +
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' --list To print the pids as a list.\n' +
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'\n' +
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'Examples\n' +
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' $ pidtree\n' +
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' $ pidtree --list\n' +
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' $ pidtree 1\n' +
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' $ pidtree 1 --list\n';
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console.log(help);
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}
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function list(ppid) {
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pidtree(ppid === undefined ? -1 : ppid, function(err, list) {
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if (err) {
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console.error(err.message);
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return;
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}
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console.log(list.join(os.EOL));
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});
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}
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function tree(ppid) {
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pidtree(ppid, {advanced: true}, function(err, list) {
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if (err) {
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console.error(err.message);
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return;
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}
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var parents = {}; // Hash Map of parents
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var tree = {}; // Adiacency Hash Map
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while (list.length > 0) {
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var element = list.pop();
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if (tree[element.ppid]) {
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tree[element.ppid].push(element.pid);
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} else {
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tree[element.ppid] = [element.pid];
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}
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if (ppid === -1) {
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parents[element.pid] = element.ppid;
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}
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}
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var roots = [ppid];
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if (ppid === -1) {
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// Get all the roots
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roots = Object.keys(tree).filter(function(node) {
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return parents[node] === undefined;
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});
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}
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roots.forEach(function(root) {
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print(tree, root);
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});
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});
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function print(tree, start) {
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function printBranch(node, branch) {
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var isGraphHead = branch.length === 0;
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var children = tree[node] || [];
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var branchHead = '';
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if (!isGraphHead) {
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branchHead = children.length > 0 ? '┬ ' : '─ ';
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}
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console.log(branch + branchHead + node);
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var baseBranch = branch;
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if (!isGraphHead) {
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var isChildOfLastBranch = branch.slice(-2) === '└─';
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baseBranch = branch.slice(0, -2) + (isChildOfLastBranch ? ' ' : '| ');
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}
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var nextBranch = baseBranch + '├─';
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var lastBranch = baseBranch + '└─';
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children.forEach(function(child, index) {
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printBranch(
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child,
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children.length - 1 === index ? lastBranch : nextBranch
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);
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});
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}
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printBranch(start, '');
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}
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}
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function run() {
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var flag;
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var ppid;
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for (var i = 2; i < process.argv.length; i++) {
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if (process.argv[i].startsWith('--')) {
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flag = process.argv[i];
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} else {
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ppid = process.argv[i];
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}
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}
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if (ppid === undefined) {
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ppid = -1;
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}
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if (flag === '--list') list(ppid);
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else if (flag === undefined) tree(ppid);
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else help();
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}
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run();
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