source: gs2-extensions/afrepo/trunk/src/src/AFRepo.GSDLEXT.class.php.in@ 27290

<?php

/**
 * Bart Nagel <[email protected]>
 *
 * AFRepo top-level class to slot in with the Greenstone extension framework
 *
 * The audio is expected to be in subdirectories of the 'import-mp3' directory, and 
 * for example purposes can be named in such a way that the example 
 * PathClassifier classifier can get meanining from it.
 */

class AFRepo extends AFRepoBase {
    private $allfiles;

    public function getName() {
        return "Salami 4Store audio repository";
    }

    public function getURIPrefix() {
        return "@afrepo-http-prefix@/afrepo/";
    }

    /* Done this way, can talk to the 4store server directly
           rather than relying on proxying through the PHP-based 'afrepo' server */
    public function getTrippleStoreURIPrefix() {
        return "@afrepo-http-prefix@/4store/";
    }

    public function getSparqlEndpoint() {
        return $this->getTrippleStoreURIPrefix() . "sparql/";
    }

    public function getDataEndpoint() {
        return $this->getTrippleStoreURIPrefix() . "data/";
    }

    public function getAllFiles() {
        if (!is_null($this->allfiles))
            return $this->allfiles;

        $this->allfiles = array();
        $path = realpath("import-mp3");
        $dir = dir($path);
        while (($file = $dir->read()) !== false) {
            if ($file[0] != "." && is_dir($path . "/" . $file)) {
                $subdir = dir($path . "/" . $file);
                while (($subfile = $subdir->read()) !== false) {
                    if ($subfile[0] != "." && is_file($path . "/" . $file . "/" . $subfile))
                        $this->allfiles[$path . "/" . $file . "/" . $subfile] = true;
                }
                $subdir->close();
            }
        }
        $dir->close();

        return $this->allfiles;
    }

    public function getSongFiles($id) {
        $filepath = $this->idToLinkPath($id);
        $origfilepath = realpath($filepath);

        if ($origfilepath === false)
            return array();

        // is it a clip?
        if (preg_match('%\.clip\..{1,4}$%', $origfilepath)) {
            // does full version exist?
            $fullpath = preg_replace('%\.clip%', "", $origfilepath);
            if (file_exists($fullpath))
                return array($fullpath, $origfilepath);
            return array($origfilepath);
        }

        // it's a full song. does clip exist?
        $clippath = preg_replace('%(\..{1,4})$%', '.clip\1', $origfilepath);
        if (file_exists($clippath))
            return array($origfilepath, $clippath);
        return array($origfilepath);
    }

    public function haveMetadataPermission() {
        return true;
    }

    public function haveAudioPermission() {
        return ipInRange($_SERVER["REMOTE_ADDR"], "127.0.0.0/8");
    }

    public function getMBID($id) {
        $classifiers = array(
            new TagClassifier(),
            new EchonestClassifier(),
            new PathClassifier(),
        );
        foreach ($classifiers as $classifier)
            if ($classifier->available() && $classifier->hasMBID($id))
                return $classifier->getMBID($id);
        return null;
    }
}

?>