includes/libs/composer/ComposerJson.php

   1 <?php
   2
   3 namespace Wikimedia\Composer;
   4
   5 /**
   6  * Reads a composer.json file and provides accessors to get
   7  * its hash and the required dependencies
   8  *
   9  * @since 1.25
  10  */
  11 class ComposerJson {
  12         /**
  13          * @var array[]
  14          */
  15         private $contents;
  16
  17         /**
  18          * @param string $location
  19          */
  20         public function __construct( $location ) {
  21                 $this->contents = json_decode( file_get_contents( $location ), true );
  22         }
  23
  24         /**
  25          * Dependencies as specified by composer.json
  26          *
  27          * @return string[]
  28          */
  29         public function getRequiredDependencies() {
  30                 $deps = [];
  31                 if ( isset( $this->contents['require'] ) ) {
  32                         foreach ( $this->contents['require'] as $package => $version ) {
  33                                 // Examples of package dependencies that don't have a / in the name:
  34                                 // php, ext-xml, composer-plugin-api
  35                                 if ( strpos( $package, '/' ) !== false ) {
  36                                         $deps[$package] = self::normalizeVersion( $version );
  37                                 }
  38                         }
  39                 }
  40
  41                 return $deps;
  42         }
  43
  44         /**
  45          * Strip a leading "v" from the version name
  46          *
  47          * @param string $version
  48          * @return string
  49          */
  50         public static function normalizeVersion( $version ) {
  51                 // Composer auto-strips the "v" in front of the tag name
  52                 return ltrim( $version, 'v' );
  53         }
  54
  55 }