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<?php
namespace Wikimedia\Composer;
/**
* Reads a composer.json file and provides accessors to get
* its hash and the required dependencies
*
* @since 1.25
*/
class ComposerJson {
/**
* @var array[]
*/
private $contents;
/**
* @param string $location
*/
public function __construct( $location ) {
$this->contents = json_decode( file_get_contents( $location ), true );
}
/**
* Dependencies as specified by composer.json
*
* @return string[]
*/
public function getRequiredDependencies() {
$deps = [];
if ( isset( $this->contents['require'] ) ) {
foreach ( $this->contents['require'] as $package => $version ) {
// Examples of package dependencies that don't have a / in the name:
// php, ext-xml, composer-plugin-api
if ( strpos( $package, '/' ) !== false ) {
$deps[$package] = self::normalizeVersion( $version );
}
}
}
return $deps;
}
/**
* Strip a leading "v" from the version name
*
* @param string $version
* @return string
*/
public static function normalizeVersion( $version ) {
// Composer auto-strips the "v" in front of the tag name
return ltrim( $version, 'v' );
}
}
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