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<?php
if ( !class_exists('Puc_v4p6_InstalledPackage', false) ):
/**
* This class represents a currently installed plugin or theme.
*
* Not to be confused with the "package" field in WP update API responses that contains
* the download URL of a the new version.
*/
abstract class Puc_v4p6_InstalledPackage {
/**
* @var Puc_v4p6_UpdateChecker
*/
protected $updateChecker;
public function __construct($updateChecker) {
$this->updateChecker = $updateChecker;
}
/**
* Get the currently installed version of the plugin or theme.
*
* @return string|null Version number.
*/
abstract public function getInstalledVersion();
/**
* Get the full path of the plugin or theme directory (without a trailing slash).
*
* @return string
*/
abstract public function getAbsoluteDirectoryPath();
/**
* Check whether a regular file exists in the package's directory.
*
* @param string $relativeFileName File name relative to the package directory.
* @return bool
*/
public function fileExists($relativeFileName) {
return is_file(
$this->getAbsoluteDirectoryPath()
. DIRECTORY_SEPARATOR
. ltrim($relativeFileName, '/\\')
);
}
/* -------------------------------------------------------------------
* File header parsing
* -------------------------------------------------------------------
*/
/**
* Parse plugin or theme metadata from the header comment.
*
* This is basically a simplified version of the get_file_data() function from /wp-includes/functions.php.
* It's intended as a utility for subclasses that detect updates by parsing files in a VCS.
*
* @param string|null $content File contents.
* @return string[]
*/
public function getFileHeader($content) {
$content = (string)$content;
//WordPress only looks at the first 8 KiB of the file, so we do the same.
$content = substr($content, 0, 8192);
//Normalize line endings.
$content = str_replace("\r", "\n", $content);
$headers = $this->getHeaderNames();
$results = array();
foreach ($headers as $field => $name) {
$success = preg_match('/^[ \t\/*#@]*' . preg_quote($name, '/') . ':(.*)$/mi', $content, $matches);
if ( ($success === 1) && $matches[1] ) {
$value = $matches[1];
if ( function_exists('_cleanup_header_comment') ) {
$value = _cleanup_header_comment($value);
}
$results[$field] = $value;
} else {
$results[$field] = '';
}
}
return $results;
}
/**
* @return array Format: ['HeaderKey' => 'Header Name']
*/
abstract protected function getHeaderNames();
/**
* Get the value of a specific plugin or theme header.
*
* @param string $headerName
* @return string Either the value of the header, or an empty string if the header doesn't exist.
*/
abstract public function getHeaderValue($headerName);
}
endif;