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->hash = md5_file( $location );
  16                 $this->contents = json_decode( file_get_contents( $location ), true );
  17         }
  18
  19         public function getHash() {
  20                 return $this->hash;
  21         }
  22
  23         /**
  24          * Dependencies as specified by composer.json
  25          *
  26          * @return array
  27          */
  28         public function getRequiredDependencies() {
  29                 $deps = array();
  30                 if ( isset( $this->contents['require'] ) ) {
  31                         foreach ( $this->contents['require'] as $package => $version ) {
  32                                 if ( $package !== "php" && strpos( $package, 'ext-' ) !== 0 ) {
  33                                         $deps[$package] = self::normalizeVersion( $version );
  34                                 }
  35                         }
  36                 }
  37
  38                 return $deps;
  39         }
  40
  41         /**
  42          * Strip a leading "v" from the version name
  43          *
  44          * @param string $version
  45          * @return string
  46          */
  47         public static function normalizeVersion( $version ) {
  48                 if ( strpos( $version, 'v' ) === 0 ) {
  49                         // Composer auto-strips the "v" in front of the tag name
  50                         $version = ltrim( $version, 'v' );
  51                 }
  52
  53                 return $version;
  54         }
  55
  56 }