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          * @var array[]
  12          */
  13         private $contents;
  14
  15         /**
  16          * @param string $location
  17          */
  18         public function __construct( $location ) {
  19                 $this->contents = json_decode( file_get_contents( $location ), true );
  20         }
  21
  22         /**
  23          * Dependencies as specified by composer.json
  24          *
  25          * @return string[]
  26          */
  27         public function getRequiredDependencies() {
  28                 $deps = [];
  29                 if ( isset( $this->contents['require'] ) ) {
  30                         foreach ( $this->contents['require'] as $package => $version ) {
  31                                 if ( $package !== "php" && strpos( $package, 'ext-' ) !== 0 ) {
  32                                         $deps[$package] = self::normalizeVersion( $version );
  33                                 }
  34                         }
  35                 }
  36
  37                 return $deps;
  38         }
  39
  40         /**
  41          * Strip a leading "v" from the version name
  42          *
  43          * @param string $version
  44          * @return string
  45          */
  46         public static function normalizeVersion( $version ) {
  47                 if ( strpos( $version, 'v' ) === 0 ) {
  48                         // Composer auto-strips the "v" in front of the tag name
  49                         $version = ltrim( $version, 'v' );
  50                 }
  51
  52                 return $version;
  53         }
  54
  55 }