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<?php
/**
* This file is part of PHP Mess Detector.
*
* Copyright (c) Manuel Pichler <[email protected]>.
* All rights reserved.
*
* Licensed under BSD License
* For full copyright and license information, please see the LICENSE file.
* Redistributions of files must retain the above copyright notice.
*
* @author Manuel Pichler <[email protected]>
* @copyright Manuel Pichler. All rights reserved.
* @license https://opensource.org/licenses/bsd-license.php BSD License
* @link http://phpmd.org/
*/
namespace PHPMD;
use PHPMD\Exception\RuleClassFileNotFoundException;
use PHPMD\Exception\RuleClassNotFoundException;
use PHPMD\Exception\RuleSetNotFoundException;
use RuntimeException;
/**
* This factory class is used to create the {@link \PHPMD\RuleSet} instance
* that PHPMD will use to analyze the source code.
*/
class RuleSetFactory
{
/**
* Is the strict mode active?
*
* @var boolean
* @since 1.2.0
*/
private $strict = false;
/**
* The data directory set within the class constructor.
*
* @var string
*/
private $location;
/**
* The minimum priority for rules to load.
*
* @var integer
*/
private $minimumPriority = Rule::LOWEST_PRIORITY;
/**
* The maximum priority for rules to load.
*
* @var integer
*/
private $maximumPriority = Rule::HIGHEST_PRIORITY;
/**
* Constructs a new default rule-set factory instance.
*/
public function __construct()
{
$this->location = __DIR__ . '/../../resources';
}
/**
* Activates the strict mode for all rule sets.
*
* @return void
* @since 1.2.0
*/
public function setStrict()
{
$this->strict = true;
}
/**
* Sets the minimum priority that a rule must have.
*
* @param integer $minimumPriority The minimum priority value.
* @return void
*/
public function setMinimumPriority($minimumPriority)
{
$this->minimumPriority = $minimumPriority;
}
/**
* Sets the maximum priority that a rule must have.
*
* @param integer $maximumPriority The maximum priority value.
* @return void
*/
public function setMaximumPriority($maximumPriority)
{
$this->maximumPriority = $maximumPriority;
}
/**
* Creates an array of rule-set instances for the given argument.
*
* @param string $ruleSetFileNames Comma-separated string of rule-set filenames or identifier.
* @return \PHPMD\RuleSet[]
*/
public function createRuleSets($ruleSetFileNames)
{
$ruleSets = array();
$ruleSetFileName = strtok($ruleSetFileNames, ',');
while ($ruleSetFileName !== false) {
$ruleSets[] = $this->createSingleRuleSet($ruleSetFileName);
$ruleSetFileName = strtok(',');
}
return $ruleSets;
}
/**
* Creates a single rule-set instance for the given filename or identifier.
*
* @param string $ruleSetOrFileName The rule-set filename or identifier.
* @return \PHPMD\RuleSet
*/
public function createSingleRuleSet($ruleSetOrFileName)
{
$fileName = $this->createRuleSetFileName($ruleSetOrFileName);
return $this->parseRuleSetNode($fileName);
}
/**
* Lists available rule-set identifiers.
*
* @return string[]
*/
public function listAvailableRuleSets()
{
return array_merge(
self::listRuleSetsInDirectory($this->location . '/rulesets/'),
self::listRuleSetsInDirectory(getcwd() . '/rulesets/')
);
}
/**
* This method creates the filename for a rule-set identifier or it returns
* the input when it is already a filename.
*
* @param string $ruleSetOrFileName The rule-set filename or identifier.
* @return string Path to rule set file name
* @throws RuleSetNotFoundException Thrown if no readable file found
*/
private function createRuleSetFileName($ruleSetOrFileName)
{
foreach ($this->filePaths($ruleSetOrFileName) as $filePath) {
if ($this->isReadableFile($filePath)) {
return $filePath;
}
}
throw new RuleSetNotFoundException($ruleSetOrFileName);
}
/**
* Lists available rule-set identifiers in given directory.
*
* @param string $directory The directory to scan for rule-sets.
* @return string[]
*/
private static function listRuleSetsInDirectory($directory)
{
$ruleSets = array();
if (is_dir($directory)) {
foreach (scandir($directory) as $file) {
$matches = array();
if (is_file($directory . $file) && preg_match('/^(.*)\.xml$/', $file, $matches)) {
$ruleSets[] = $matches[1];
}
}
}
return $ruleSets;
}
/**
* This method parses the rule-set definition in the given file.
*
* @param string $fileName
* @return \PHPMD\RuleSet
* @throws RuntimeException When loading the XML file fails.
*/
private function parseRuleSetNode($fileName)
{
// Hide error messages
$libxml = libxml_use_internal_errors(true);
$xml = simplexml_load_string(file_get_contents($fileName));
if ($xml === false) {
// Reset error handling to previous setting
libxml_use_internal_errors($libxml);
throw new RuntimeException(trim(libxml_get_last_error()->message));
}
$ruleSet = new RuleSet();
$ruleSet->setFileName($fileName);
$ruleSet->setName((string)$xml['name']);
if ($this->strict) {
$ruleSet->setStrict();
}
foreach ($xml->children() as $node) {
if ($node->getName() === 'php-includepath') {
$includePath = (string)$node;
if (is_dir(dirname($fileName) . DIRECTORY_SEPARATOR . $includePath)) {
$includePath = dirname($fileName) . DIRECTORY_SEPARATOR . $includePath;
$includePath = realpath($includePath);
}
$includePath = get_include_path() . PATH_SEPARATOR . $includePath;
set_include_path($includePath);
}
}
foreach ($xml->children() as $node) {
if ($node->getName() === 'description') {
$ruleSet->setDescription((string)$node);
} elseif ($node->getName() === 'rule') {
$this->parseRuleNode($ruleSet, $node);
}
}
return $ruleSet;
}
/**
* This method parses a single rule xml node. Bases on the structure of the
* xml node this method delegates the parsing process to another method in
* this class.
*
* @param \PHPMD\RuleSet $ruleSet
* @param \SimpleXMLElement $node
* @return void
*/
private function parseRuleNode(RuleSet $ruleSet, \SimpleXMLElement $node)
{
$ref = (string)$node['ref'];
if ($ref === '') {
$this->parseSingleRuleNode($ruleSet, $node);
return;
}
if (substr($ref, -3, 3) === 'xml') {
$this->parseRuleSetReferenceNode($ruleSet, $node);
return;
}
$this->parseRuleReferenceNode($ruleSet, $node);
}
/**
* This method parses a complete rule set that was includes a reference in
* the currently parsed ruleset.
*
* @param \PHPMD\RuleSet $ruleSet
* @param \SimpleXMLElement $ruleSetNode
* @return void
*/
private function parseRuleSetReferenceNode(RuleSet $ruleSet, \SimpleXMLElement $ruleSetNode)
{
$rules = $this->parseRuleSetReference($ruleSetNode);
foreach ($rules as $rule) {
if ($this->isIncluded($rule, $ruleSetNode)) {
$ruleSet->addRule($rule);
}
}
}
/**
* Parses a rule-set xml file referenced by the given rule-set xml element.
*
* @param \SimpleXMLElement $ruleSetNode
* @return \PHPMD\RuleSet
* @since 0.2.3
*/
private function parseRuleSetReference(\SimpleXMLElement $ruleSetNode)
{
$ruleSetFactory = new RuleSetFactory();
$ruleSetFactory->setMinimumPriority($this->minimumPriority);
$ruleSetFactory->setMaximumPriority($this->maximumPriority);
return $ruleSetFactory->createSingleRuleSet((string)$ruleSetNode['ref']);
}
/**
* Checks if the given rule is included/not excluded by the given rule-set
* reference node.
*
* @param \PHPMD\Rule $rule
* @param \SimpleXMLElement $ruleSetNode
* @return boolean
* @since 0.2.3
*/
private function isIncluded(Rule $rule, \SimpleXMLElement $ruleSetNode)
{
foreach ($ruleSetNode->exclude as $exclude) {
if ($rule->getName() === (string)$exclude['name']) {
return false;
}
}
return true;
}
/**
* This method will create a single rule instance and add it to the given
* {@link \PHPMD\RuleSet} object.
*
* @param \PHPMD\RuleSet $ruleSet
* @param \SimpleXMLElement $ruleNode
* @return void
* @throws RuleClassFileNotFoundException
* @throws RuleClassNotFoundException
*/
private function parseSingleRuleNode(RuleSet $ruleSet, \SimpleXMLElement $ruleNode)
{
$fileName = '';
$ruleSetFolderPath = dirname($ruleSet->getFileName());
if (isset($ruleNode['file'])) {
if (is_readable((string)$ruleNode['file'])) {
$fileName = (string)$ruleNode['file'];
} elseif (is_readable($ruleSetFolderPath . DIRECTORY_SEPARATOR . (string)$ruleNode['file'])) {
$fileName = $ruleSetFolderPath . DIRECTORY_SEPARATOR . (string)$ruleNode['file'];
}
}
$className = (string)$ruleNode['class'];
if (!is_readable($fileName)) {
$fileName = strtr($className, '\\', '/') . '.php';
}
if (!is_readable($fileName)) {
$fileName = str_replace(array('\\', '_'), '/', $className) . '.php';
}
if (class_exists($className) === false) {
$handle = @fopen($fileName, 'r', true);
if ($handle === false) {
throw new RuleClassFileNotFoundException($className);
}
fclose($handle);
include_once $fileName;
if (class_exists($className) === false) {
throw new RuleClassNotFoundException($className);
}
}
/* @var $rule \PHPMD\Rule */
$rule = new $className();
$rule->setName((string)$ruleNode['name']);
$rule->setMessage((string)$ruleNode['message']);
$rule->setExternalInfoUrl((string)$ruleNode['externalInfoUrl']);
$rule->setRuleSetName($ruleSet->getName());
if (isset($ruleNode['since']) && trim($ruleNode['since']) !== '') {
$rule->setSince((string)$ruleNode['since']);
}
foreach ($ruleNode->children() as $node) {
if ($node->getName() === 'description') {
$rule->setDescription((string)$node);
} elseif ($node->getName() === 'example') {
$rule->addExample((string)$node);
} elseif ($node->getName() === 'priority') {
$rule->setPriority((integer)$node);
} elseif ($node->getName() === 'properties') {
$this->parsePropertiesNode($rule, $node);
}
}
if ($rule->getPriority() <= $this->minimumPriority && $rule->getPriority() >= $this->maximumPriority) {
$ruleSet->addRule($rule);
}
}
/**
* This method parses a single rule that was included from a different
* rule-set.
*
* @param \PHPMD\RuleSet $ruleSet
* @param \SimpleXMLElement $ruleNode
* @return void
*/
private function parseRuleReferenceNode(RuleSet $ruleSet, \SimpleXMLElement $ruleNode)
{
$ref = (string)$ruleNode['ref'];
$fileName = substr($ref, 0, strpos($ref, '.xml/') + 4);
$fileName = $this->createRuleSetFileName($fileName);
$ruleName = substr($ref, strpos($ref, '.xml/') + 5);
$ruleSetFactory = new RuleSetFactory();
$ruleSetRef = $ruleSetFactory->createSingleRuleSet($fileName);
$rule = $ruleSetRef->getRuleByName($ruleName);
if (isset($ruleNode['name']) && trim($ruleNode['name']) !== '') {
$rule->setName((string)$ruleNode['name']);
}
if (isset($ruleNode['message']) && trim($ruleNode['message']) !== '') {
$rule->setMessage((string)$ruleNode['message']);
}
if (isset($ruleNode['externalInfoUrl']) && trim($ruleNode['externalInfoUrl']) !== '') {
$rule->setExternalInfoUrl((string)$ruleNode['externalInfoUrl']);
}
foreach ($ruleNode->children() as $node) {
if ($node->getName() === 'description') {
$rule->setDescription((string)$node);
} elseif ($node->getName() === 'example') {
$rule->addExample((string)$node);
} elseif ($node->getName() === 'priority') {
$rule->setPriority((integer)$node);
} elseif ($node->getName() === 'properties') {
$this->parsePropertiesNode($rule, $node);
}
}
if ($rule->getPriority() <= $this->minimumPriority && $rule->getPriority() >= $this->maximumPriority) {
$ruleSet->addRule($rule);
}
}
/**
* This method parses a xml properties structure and adds all found properties
* to the given <b>$rule</b> object.
*
* <code>
* ...
* <properties>
* <property name="foo" value="42" />
* <property name="bar" value="23" />
* ...
* </properties>
* ...
* </code>
*
* @param \PHPMD\Rule $rule
* @param \SimpleXMLElement $propertiesNode
* @return void
*/
private function parsePropertiesNode(Rule $rule, \SimpleXMLElement $propertiesNode)
{
foreach ($propertiesNode->children() as $node) {
if ($node->getName() === 'property') {
$this->addProperty($rule, $node);
}
}
}
/**
* Adds an additional property to the given <b>$rule</b> instance.
*
* @param \PHPMD\Rule $rule
* @param \SimpleXMLElement $node
* @return void
*/
private function addProperty(Rule $rule, \SimpleXMLElement $node)
{
$name = trim($node['name']);
$value = trim($this->getPropertyValue($node));
if ($name !== '' && $value !== '') {
$rule->addProperty($name, $value);
}
}
/**
* Returns the value of a property node. This value can be expressed in
* two different notations. First version is an attribute named <b>value</b>
* and the second valid notation is a child element named <b>value</b> that
* contains the value as character data.
*
* @param \SimpleXMLElement $propertyNode
* @return string
* @since 0.2.5
*/
private function getPropertyValue(\SimpleXMLElement $propertyNode)
{
if (isset($propertyNode->value)) {
return (string)$propertyNode->value;
}
return (string)$propertyNode['value'];
}
/**
* Returns an array of path exclude patterns in format described at
*
* http://pmd.sourceforge.net/pmd-5.0.4/howtomakearuleset.html#Excluding_files_from_a_ruleset
*
* @param string $fileName The filename of a rule-set definition.
* @return array|null
* @throws RuntimeException Thrown if file is not proper xml
*/
public function getIgnorePattern($fileName)
{
$excludes = array();
foreach (array_map('trim', explode(',', $fileName)) as $ruleSetFileName) {
$ruleSetFileName = $this->createRuleSetFileName($ruleSetFileName);
// Hide error messages
$libxml = libxml_use_internal_errors(true);
$xml = simplexml_load_string(file_get_contents($ruleSetFileName));
if ($xml === false) {
// Reset error handling to previous setting
libxml_use_internal_errors($libxml);
throw new RuntimeException(trim(libxml_get_last_error()->message));
}
foreach ($xml->children() as $node) {
if ($node->getName() === 'exclude-pattern') {
$excludes[] = '' . $node;
}
}
return $excludes;
}
return null;
}
/**
* Checks if given file path exists, is file (or symlink to file)
* and is readable by current user
*
* @param string $filePath File path to check against
* @return bool True if file exists and is readable, false otherwise
*/
private function isReadableFile($filePath)
{
return is_readable($filePath) && is_file($filePath);
}
/**
* Returns list of possible file paths to search against code rules
*
* @param string $fileName Rule set file name
* @return array Array of possible file locations
*/
private function filePaths($fileName)
{
$filePathParts = array(
array($fileName),
array($this->location, $fileName),
array($this->location, 'rulesets', $fileName . '.xml'),
array(getcwd(), 'rulesets', $fileName . '.xml'),
);
foreach (explode(PATH_SEPARATOR, get_include_path()) as $includePath) {
$filePathParts[] = array($includePath, $fileName);
$filePathParts[] = array($includePath, $fileName . '.xml');
}
return array_map('implode', array_fill(0, count($filePathParts), DIRECTORY_SEPARATOR), $filePathParts);
}
}