includes/libs/composer/ComposerJson.php

   1 <?php
   2
   3 /**
   4  * Reads a composer.json file and provides accessors to get
   5  * its hash and the required dependencies
   6  *
   7  * @since 1.25
   8  */
   9 class ComposerJson {
  10
  11         /**
  12          * @param string $location
  13          */
  14         public function __construct( $location ) {
  15                 $this->contents = json_decode( file_get_contents( $location ), true );
  16         }
  17
  18         /**
  19          * Dependencies as specified by composer.json
  20          *
  21          * @return array
  22          */
  23         public function getRequiredDependencies() {
  24                 $deps = [];
  25                 if ( isset( $this->contents['require'] ) ) {
  26                         foreach ( $this->contents['require'] as $package => $version ) {
  27                                 if ( $package !== "php" && strpos( $package, 'ext-' ) !== 0 ) {
  28                                         $deps[$package] = self::normalizeVersion( $version );
  29                                 }
  30                         }
  31                 }
  32
  33                 return $deps;
  34         }
  35
  36         /**
  37          * Strip a leading "v" from the version name
  38          *
  39          * @param string $version
  40          * @return string
  41          */
  42         public static function normalizeVersion( $version ) {
  43                 if ( strpos( $version, 'v' ) === 0 ) {
  44                         // Composer auto-strips the "v" in front of the tag name
  45                         $version = ltrim( $version, 'v' );
  46                 }
  47
  48                 return $version;
  49         }
  50
  51 }