/**
* Load a spark spec file and tries to validate it
* @param string $filepath
* @throws SpecValidationException
* @return Spark_spec
*/
public static function loadFromDirectory($filepath)
{
$spec = array();
$filepath = rtrim($filepath, '/') . '/';
$filename = 'spark.info';
$specfile = $filepath . $filename;
/* Check that the spark file exists */
if (!file_exists($specfile)) {
throw new SpecValidationException("The '{$filename}' does not exist in the spark's root: See http://getsparks.org/spec-format");
}
/* Load it, it should have a $spec setup inside it */
$spec = Yaml::parse_file($specfile);
if (!is_array($spec)) {
throw new SpecValidationException("The '{$filename}' does not contain valid spec information: See http://getsparks.org/spec-format");
}
/* Create a spec instance */
$spark = new self();
$spark->_specFile = $specfile;
$spark->_sparkPath = $filepath;
/* Check for each individual component and load it */
if (!array_key_exists('name', $spec)) {
throw new SpecValidationException("The spec does not contain a spec name: {$filename}");
}
$spark->name = $spec['name'];
if (!array_key_exists('version', $spec)) {
throw new SpecValidationException("The spec does not contain a spec version: {$filename}");
}
$spark->version = $spec['version'];
if (!array_key_exists('compatibility', $spec)) {
throw new SpecValidationException("The spec does not contain a compatibility (tested up until): {$filename}");
}
$spark->compatibility = $spec['compatibility'];
if (!array_key_exists('dependencies', $spec)) {
$spark->dependencies = array();
} else {
$spark->dependencies = $spec['dependencies'];
}
if (!array_key_exists('tags', $spec)) {
$spark->tags = array();
} else {
$spark->tags = $spec['tags'];
}
$spark->validate();
return $spark;
}
