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<?php
/*
* This file is part of the Symfony package.
*
* (c) Fabien Potencier <fabien@symfony.com>
*
* For the full copyright and license information, please view the LICENSE
* file that was distributed with this source code.
*/
namespace Symfony\Component\Config\Definition;
use Symfony\Component\Config\Definition\Exception\InvalidConfigurationException;
use Symfony\Component\Config\Definition\Exception\InvalidTypeException;
use Symfony\Component\Config\Definition\Exception\UnsetKeyException;
/**
* Represents an Array node in the config tree.
*
* @author Johannes M. Schmitt <schmittjoh@gmail.com>
*/
class ArrayNode extends BaseNode implements PrototypeNodeInterface
{
protected $xmlRemappings = array();
protected $children = array();
protected $allowFalse = false;
protected $allowNewKeys = true;
protected $addIfNotSet = false;
protected $performDeepMerging = true;
protected $ignoreExtraKeys = false;
protected $normalizeKeys = true;
public function setNormalizeKeys($normalizeKeys)
{
$this->normalizeKeys = (Boolean) $normalizeKeys;
}
/**
* Normalizes keys between the different configuration formats.
*
* Namely, you mostly have foo_bar in YAML while you have foo-bar in XML.
* After running this method, all keys are normalized to foo_bar.
*
* If you have a mixed key like foo-bar_moo, it will not be altered.
* The key will also not be altered if the target key already exists.
*
* @param mixed $value
*
* @return array The value with normalized keys
*/
protected function preNormalize($value)
{
if (!$this->normalizeKeys || !is_array($value)) {
return $value;
}
foreach ($value as $k => $v) {
if (false !== strpos($k, '-') && false === strpos($k, '_') && !array_key_exists($normalizedKey = str_replace('-', '_', $k), $value)) {
$value[$normalizedKey] = $v;
unset($value[$k]);
}
}
return $value;
}
/**
* Retrieves the children of this node.
*
* @return array The children
*/
public function getChildren()
{
return $this->children;
}
/**
* Sets the xml remappings that should be performed.
*
* @param array $remappings an array of the form array(array(string, string))
*/
public function setXmlRemappings(array $remappings)
{
$this->xmlRemappings = $remappings;
}
/**
* Gets the xml remappings that should be performed.
*
* @return array $remappings an array of the form array(array(string, string))
*/
public function getXmlRemappings()
{
return $this->xmlRemappings;
}
/**
* Sets whether to add default values for this array if it has not been
* defined in any of the configuration files.
*
* @param Boolean $boolean
*/
public function setAddIfNotSet($boolean)
{
$this->addIfNotSet = (Boolean) $boolean;
}
/**
* Sets whether false is allowed as value indicating that the array should be unset.
*
* @param Boolean $allow
*/
public function setAllowFalse($allow)
{
$this->allowFalse = (Boolean) $allow;
}
/**
* Sets whether new keys can be defined in subsequent configurations.
*
* @param Boolean $allow
*/
public function setAllowNewKeys($allow)
{
$this->allowNewKeys = (Boolean) $allow;
}
/**
* Sets if deep merging should occur.
*
* @param Boolean $boolean
*/
public function setPerformDeepMerging($boolean)
{
$this->performDeepMerging = (Boolean) $boolean;
}
/**
* Whether extra keys should just be ignore without an exception.
*
* @param Boolean $boolean To allow extra keys
*/
public function setIgnoreExtraKeys($boolean)
{
$this->ignoreExtraKeys = (Boolean) $boolean;
}
/**
* Sets the node Name.
*
* @param string $name The node's name
*/
public function setName($name)
{
$this->name = $name;
}
/**
* Checks if the node has a default value.
*
* @return Boolean
*/
public function hasDefaultValue()
{
return $this->addIfNotSet;
}
/**
* Retrieves the default value.
*
* @return array The default value
*
* @throws \RuntimeException if the node has no default value
*/
public function getDefaultValue()
{
if (!$this->hasDefaultValue()) {
throw new \RuntimeException(sprintf('The node at path "%s" has no default value.', $this->getPath()));
}
$defaults = array();
foreach ($this->children as $name => $child) {
if ($child->hasDefaultValue()) {
$defaults[$name] = $child->getDefaultValue();
}
}
return $defaults;
}
/**
* Adds a child node.
*
* @param NodeInterface $node The child node to add
*
* @throws \InvalidArgumentException when the child node has no name
* @throws \InvalidArgumentException when the child node's name is not unique
*/
public function addChild(NodeInterface $node)
{
$name = $node->getName();
if (!strlen($name)) {
throw new \InvalidArgumentException('Child nodes must be named.');
}
if (isset($this->children[$name])) {
throw new \InvalidArgumentException(sprintf('A child node named "%s" already exists.', $name));
}
$this->children[$name] = $node;
}
/**
* Finalizes the value of this node.
*
* @param mixed $value
*
* @return mixed The finalised value
*
* @throws UnsetKeyException
* @throws InvalidConfigurationException if the node doesn't have enough children
*/
protected function finalizeValue($value)
{
if (false === $value) {
$msg = sprintf('Unsetting key for path "%s", value: %s', $this->getPath(), json_encode($value));
throw new UnsetKeyException($msg);
}
foreach ($this->children as $name => $child) {
if (!array_key_exists($name, $value)) {
if ($child->isRequired()) {
$msg = sprintf('The child node "%s" at path "%s" must be configured.', $name, $this->getPath());
$ex = new InvalidConfigurationException($msg);
$ex->setPath($this->getPath());
throw $ex;
}
if ($child->hasDefaultValue()) {
$value[$name] = $child->getDefaultValue();
}
continue;
}
try {
$value[$name] = $child->finalize($value[$name]);
} catch (UnsetKeyException $unset) {
unset($value[$name]);
}
}
return $value;
}
/**
* Validates the type of the value.
*
* @param mixed $value
*
* @throws InvalidTypeException
*/
protected function validateType($value)
{
if (!is_array($value) && (!$this->allowFalse || false !== $value)) {
$ex = new InvalidTypeException(sprintf(
'Invalid type for path "%s". Expected array, but got %s',
$this->getPath(),
gettype($value)
));
$ex->setPath($this->getPath());
throw $ex;
}
}
/**
* Normalizes the value.
*
* @param mixed $value The value to normalize
*
* @return mixed The normalized value
*
* @throws InvalidConfigurationException
*/
protected function normalizeValue($value)
{
if (false === $value) {
return $value;
}
$value = $this->remapXml($value);
$normalized = array();
foreach ($value as $name => $val) {
if (isset($this->children[$name])) {
$normalized[$name] = $this->children[$name]->normalize($val);
unset($value[$name]);
}
}
// if extra fields are present, throw exception
if (count($value) && !$this->ignoreExtraKeys) {
$msg = sprintf('Unrecognized options "%s" under "%s"', implode(', ', array_keys($value)), $this->getPath());
$ex = new InvalidConfigurationException($msg);
$ex->setPath($this->getPath());
throw $ex;
}
return $normalized;
}
/**
* Remaps multiple singular values to a single plural value.
*
* @param array $value The source values
*
* @return array The remapped values
*/
protected function remapXml($value)
{
foreach ($this->xmlRemappings as $transformation) {
list($singular, $plural) = $transformation;
if (!isset($value[$singular])) {
continue;
}
$value[$plural] = Processor::normalizeConfig($value, $singular, $plural);
unset($value[$singular]);
}
return $value;
}
/**
* Merges values together.
*
* @param mixed $leftSide The left side to merge.
* @param mixed $rightSide The right side to merge.
*
* @return mixed The merged values
*
* @throws InvalidConfigurationException
* @throws \RuntimeException
*/
protected function mergeValues($leftSide, $rightSide)
{
if (false === $rightSide) {
// if this is still false after the last config has been merged the
// finalization pass will take care of removing this key entirely
return false;
}
if (false === $leftSide || !$this->performDeepMerging) {
return $rightSide;
}
foreach ($rightSide as $k => $v) {
// no conflict
if (!array_key_exists($k, $leftSide)) {
if (!$this->allowNewKeys) {
$ex = new InvalidConfigurationException(sprintf(
'You are not allowed to define new elements for path "%s". '
.'Please define all elements for this path in one config file. '
.'If you are trying to overwrite an element, make sure you redefine it '
.'with the same name.',
$this->getPath()
));
$ex->setPath($this->getPath());
throw $ex;
}
$leftSide[$k] = $v;
continue;
}
if (!isset($this->children[$k])) {
throw new \RuntimeException('merge() expects a normalized config array.');
}
$leftSide[$k] = $this->children[$k]->merge($leftSide[$k], $v);
}
return $leftSide;
}
}
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