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refactor: FormatFactory (#2832)

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Dag 2022-06-22 18:27:20 +02:00 • committed by GitHub
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5 changed files with 40 additions and 124 deletions
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1
actions/DisplayAction.php
View file

@ -240,7 +240,6 @@ class DisplayAction extends ActionAbstract {
// Data transformation
try {
$formatFac = new FormatFactory();
$formatFac->setWorkingDir(PATH_LIB_FORMATS);
$format = $formatFac->create($format);
$format->setItems($items);
$format->setExtraInfos($infos);

1
formats/HtmlFormat.php
View file

@ -11,7 +11,6 @@ class HtmlFormat extends FormatAbstract {
// Dynamically build buttons for all formats (except HTML)
$formatFac = new FormatFactory();
$formatFac->setWorkingDir(PATH_LIB_FORMATS);
$buttons = '';
$links = '';

1
lib/BridgeList.php
View file

@ -66,7 +66,6 @@ EOD;
$bridgeList = $bridgeFac->getBridgeNames();
$formatFac = new FormatFactory();
$formatFac->setWorkingDir(PATH_LIB_FORMATS);
$formats = $formatFac->getFormatNames();
$totalBridges = count($bridgeList);

160
lib/FormatFactory.php
View file

@ -11,140 +11,60 @@
* @link https://github.com/rss-bridge/rss-bridge
*/
/**
* Factory class responsible for creating format objects from a given working
* directory.
*
* This class is capable of:
* - Locating format classes in the specified working directory (see {@see Format::$workingDir})
* - Creating new format instances based on the format's name (see {@see Format::create()})
*
* The following example illustrates the intended use for this class.
*
* ```PHP
* require_once __DIR__ . '/rssbridge.php';
*
* // Step 1: Set the working directory
* Format::setWorkingDir(__DIR__ . '/../formats/');
*
* // Step 2: Create a new instance of a format object (based on the name)
* $format = Format::create('Atom');
* ```
*/
class FormatFactory extends FactoryAbstract {
class FormatFactory
{
private $folder;
private $formatNames;
public function __construct(string $folder = PATH_LIB_FORMATS)
{
$this->folder = $folder;
// create format names
foreach(scandir($this->folder) as $file) {
if(preg_match('/^([^.]+)Format\.php$/U', $file, $m)) {
$this->formatNames[] = $m[1];
}
}
}
/**
* Creates a new format object from the working directory.
*
* @throws \InvalidArgumentException if the requested format name is invalid.
* @throws \Exception if the requested format file doesn't exist in the
* working directory.
* @param string $name Name of the format object.
* @return object|bool The format object or false if the class is not instantiable.
* @throws \InvalidArgumentException
* @param string $name The name of the format e.g. "Atom", "Mrss" or "Json"
*/
public function create($name){
if(!$this->isFormatName($name)) {
public function create(string $name): FormatInterface
{
if (! preg_match('/^[a-zA-Z0-9-]*$/', $name)) {
throw new \InvalidArgumentException('Format name invalid!');
}
$name = $this->sanitizeFormatName($name);
if (is_null($name)) {
if ($name === null) {
throw new \InvalidArgumentException('Unknown format given!');
}
$name .= 'Format';
$pathFormat = $this->getWorkingDir() . $name . '.php';
if(!file_exists($pathFormat)) {
throw new \Exception('Format file ' . $filePath . ' does not exist!');
}
if((new \ReflectionClass($name))->isInstantiable()) {
return new $name();
}
return false;
$className = '\\' . $name . 'Format';
return new $className;
}
/**
* Returns true if the provided name is a valid format name.
*
* A valid format name starts with a capital letter ([A-Z]), followed by
* zero or more alphanumeric characters or hyphen ([A-Za-z0-9-]).
*
* @param string $name The format name.
* @return bool true if the name is a valid format name, false otherwise.
*/
public function isFormatName($name){
return is_string($name) && preg_match('/^[a-zA-Z0-9-]*$/', $name) === 1;
public function getFormatNames(): array
{
return $this->formatNames;
}
/**
* Returns the list of format names from the working directory.
*
* The list is cached internally to allow for successive calls.
*
* @return array List of format names
*/
public function getFormatNames(){
static $formatNames = array(); // Initialized on first call
if(empty($formatNames)) {
$files = scandir($this->getWorkingDir());
if($files !== false) {
foreach($files as $file) {
if(preg_match('/^([^.]+)Format\.php$/U', $file, $out)) {
$formatNames[] = $out[1];
}
}
}
}
return $formatNames;
}
/**
* Returns the sanitized format name.
*
* The format name can be specified in various ways:
* * The PHP file name (i.e. `AtomFormat.php`)
* * The PHP file name without file extension (i.e. `AtomFormat`)
* * The format name (i.e. `Atom`)
*
* A format file matching the given format name must exist in the working
* directory!
*
* @param string $name The format name
* @return string|null The sanitized format name if the provided name is
* valid, null otherwise.
*/
protected function sanitizeFormatName($name) {
protected function sanitizeFormatName(string $name) {
$name = ucfirst(strtolower($name));
if(is_string($name)) {
// Trim trailing '.php' if exists
if(preg_match('/(.+)(?:\.php)/', $name, $matches)) {
$name = $matches[1];
}
// Trim trailing 'Format' if exists
if(preg_match('/(.+)(?:Format)/i', $name, $matches)) {
$name = $matches[1];
}
// The name is valid if a corresponding format file is found on disk
if(in_array($name, $this->getFormatNames())) {
$index = array_search($name, $this->getFormatNames());
return $this->getFormatNames()[$index];
}
Debug::log('Invalid format name: "' . $name . '"!');
// Trim trailing '.php' if exists
if (preg_match('/(.+)(?:\.php)/', $name, $matches)) {
$name = $matches[1];
}
return null; // Bad parameter
// Trim trailing 'Format' if exists
if (preg_match('/(.+)(?:Format)/i', $name, $matches)) {
$name = $matches[1];
}
if (in_array($name, $this->formatNames)) {
return $name;
}
return null;
}
}

1
tests/Formats/BaseFormatTest.php
View file

@ -53,7 +53,6 @@ abstract class BaseFormatTest extends TestCase {
protected function formatData(string $formatName, \stdClass $sample): string {
$formatFac = new FormatFactory();
$formatFac->setWorkingDir(PATH_LIB_FORMATS);
$format = $formatFac->create($formatName);
$format->setItems($sample->items);
$format->setExtraInfos($sample->meta);