README

Lib for generate a dependency tree.

The Principle is to have a tree who contains lines. For each lines, there is a tree who contains lines too.

The first lines is for the package which loaded at the same times. But, for the same line, its package may have dependencies between them. So each lines contain a tree where packages are sorted for have their dependencies of the same line loaded before them.

Install with composer

Download composer

$ curl -s https://getcomposer.org/installer | php

Add call-curl repository to you composer.json

{
    "require": {
        "bulton-fr/dependency-tree": "@stable"
    }
}

Execute the command

$ php composer.phar install

Use in your code

Basic usage

$tree = new \bultonFr\DependencyTree\DependencyTree;
$tree->addDependency('package1')
     ->addDependency('package2');

$generatedTree = $tree->generateTree();

The generatedTree contains :

array(1) {
  [0]=> array(1) {
    [0]=> array(2) {
      [0]=> string(8) "package1"
      [1]=> string(8) "package2"
    }
  }

### Advanced usage

$tree = new \bultonFr\DependencyTree\DependencyTree;
$tree->addDependency('package1')
     ->addDependency('package2', 1)
     ->addDependency('package3', 1, ['package2'])
     ->addDependency('package4', 0, ['package2'])
     ->addDependency('package5', 1, ['package4'])
     ->addDependency('package6', 1, ['package3', 'package5'])
     ->addDependency('package7', 3)
     ->addDependency('package8', 3);

$generatedTree = $tree->generateTree();

The generatedTree contains :

array(3) {
  [0]=> array(1) {
    [0]=> array(1) {
      [0]=> string(8) "package1"
    }
  }
  [1]=> array(4) {
    [0]=> array(1) {
      [0]=> string(8) "package2"
    }
    [1]=> array(1) {
      [0]=> string(8) "package4"
    }
    [2]=> array(2) {
      [0]=> string(8) "package3"
      [1]=> string(8) "package5"
    }
    [3]=> array(1) {
      [0]=> string(8) "package6"
    }
  }
  [3]=> array(1) {
    [0]=> array(2) {
      [0]=> string(8) "package7"
      [1]=> string(8) "package8"
    }
  }
}

In a graphic representation :

At left we see the first tree with the list of package at their time loader. At right, we see the tree for the second line, with packages sorted to be loaded in the correct order.

Note : The package "package4" is declared to be loaded in the first line. But its dependencies are declared to be loaded in the second line. So the "package4" has be moved to be loaded in the same line as its dependencies