105 lines
2.0 KiB
PHP
105 lines
2.0 KiB
PHP
<?php
|
|
|
|
/**
|
|
* Enables text extraction of file content via the Tika Rest Server
|
|
*
|
|
* {@link http://tika.apache.org/1.7/gettingstarted.html}
|
|
*/
|
|
class TikaServerTextExtractor extends FileTextExtractor {
|
|
|
|
/**
|
|
* Tika server is pretty efficient so use it immediately if available
|
|
*
|
|
* @var integer
|
|
* @config
|
|
*/
|
|
private static $priority = 80;
|
|
|
|
/**
|
|
* Server endpoint
|
|
*
|
|
* @var string
|
|
* @config
|
|
*/
|
|
private static $server_endpoint;
|
|
|
|
/**
|
|
* @var TikaRestClient
|
|
*/
|
|
protected $client = null;
|
|
|
|
/**
|
|
* @return TikaRestClient
|
|
*/
|
|
public function getClient() {
|
|
return $this->client ?:
|
|
($this->client =
|
|
Injector::inst()->createWithArgs(
|
|
'TikaRestClient',
|
|
array($this->getServerEndpoint())
|
|
)
|
|
);
|
|
}
|
|
|
|
public function getServerEndpoint() {
|
|
if(defined('SS_TIKA_ENDPOINT')) {
|
|
return SS_TIKA_ENDPOINT;
|
|
}
|
|
|
|
if(getenv('SS_TIKA_ENDPOINT')) return getenv('SS_TIKA_ENDPOINT');
|
|
|
|
// Default to configured endpoint
|
|
return $this->config()->server_endpoint;
|
|
}
|
|
|
|
/**
|
|
* Get the version of tika installed, or 0 if not installed
|
|
*
|
|
* @return float version of tika
|
|
*/
|
|
public function getVersion() {
|
|
return $this
|
|
->getClient()
|
|
->getVersion();
|
|
}
|
|
|
|
public function isAvailable() {
|
|
return $this->getServerEndpoint() &&
|
|
$this->getClient()->isAvailable() &&
|
|
$this->getVersion() >= 1.7;
|
|
}
|
|
|
|
public function supportsExtension($extension) {
|
|
// Determine support via mime type only
|
|
return false;
|
|
}
|
|
|
|
|
|
/**
|
|
* Cache of supported mime types
|
|
*
|
|
* @var array
|
|
*/
|
|
protected $supportedMimes = array();
|
|
|
|
public function supportsMime($mime) {
|
|
$supported = $this->supportedMimes ?:
|
|
($this->supportedMimes = $this->getClient()->getSupportedMimes());
|
|
|
|
// Check if supported (most common / quickest lookup)
|
|
if(isset($supported[$mime])) return true;
|
|
|
|
// Check aliases
|
|
foreach($supported as $info) {
|
|
if(isset($info['alias']) && in_array($mime, $info['alias'])) return true;
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
public function getContent($path) {
|
|
return $this->getClient()->tika($path);
|
|
}
|
|
|
|
}
|