jidaikobo-shibata/a11yc

<?php
/**
 * A11yc\Yaml
 *
 * @package    part of A11yc
 * @author     Jidaikobo Inc.
 * @license    The MIT License (MIT)
 * @copyright  Jidaikobo Inc.
 * @link       http://www.jidaikobo.com
 */
namespace A11yc;

class Yaml
{
    protected static $data = array();
    protected static $non_interferences = array();

    /**
     * parse YAML message
     *
     * @return Array
     */
    public static function fetch()
    {
        if ( ! empty(static::$data)) return static::$data;

        // load Spyc - YAML lib.
        if ( ! class_exists('Spyc'))
        {
            include A11YC_LIB_PATH.'/spyc/Spyc.php';
        }

        if ( ! class_exists('Spyc')) Util::error('Spyc is not found');

        $standards   = file_get_contents(A11YC_RESOURCE_PATH.'/standards.yml');
        $levels      = file_get_contents(A11YC_RESOURCE_PATH.'/levels.yml');
        $principles  = file_get_contents(A11YC_RESOURCE_PATH.'/principles.yml');
        $guidelines  = file_get_contents(A11YC_RESOURCE_PATH.'/guidelines.yml');
        $criterions  = file_get_contents(A11YC_RESOURCE_PATH.'/criterions.yml');
        $errors      = file_get_contents(A11YC_RESOURCE_PATH.'/errors.yml');
        $techs       = file_get_contents(A11YC_RESOURCE_PATH.'/techs.yml');
        $techs_codes = file_get_contents(A11YC_RESOURCE_PATH.'/techs_codes.yml');
        $tests       = file_get_contents(A11YC_RESOURCE_PATH.'/tests.yml');
        $processes   = file_get_contents(A11YC_RESOURCE_PATH.'/processes.yml');
        static::$data = \Spyc::YAMLLoadString(
            $standards.
            $levels.
            $principles.
            $guidelines.
            $criterions.
            $errors.
            $techs.
            $techs_codes.
            $tests.
            $processes
        );
        return static::$data;
    }

    /**
     * get each
     *
     * @param String $name
     * @return Array
     */
    public static function each($name)
    {
        $ret = self::fetch();
        return Arr::get($ret, $name, array());
    }

    /**
     * Non-interferences
     *
     * @return Array
     */
    public static function nonInterferences()
    {
        if ( ! empty(static::$non_interferences)) return static::$non_interferences;

        $yml = self::fetch();
        foreach ($yml['criterions'] as $criterion => $v)
        {
            if ( ! isset($v['non-interference'])) continue;
            static::$non_interferences[] = $criterion;
        }
        return static::$non_interferences;
    }
}