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<?php
namespace SMW\DataValues\ValueParsers;
use SMW\Localizer;
/**
* @private
*
* @license GNU GPL v2+
* @since 2.5
*
* @author mwjames
*/
class PropertyValueParser implements ValueParser {
/**
* @var array
*/
private $errors = [];
/**
* @var array
*/
private $invalidCharacterList = [];
/**
* @var boolean
*/
private $isCapitalLinks = true;
/**
* @var boolean
*/
private $reqCapitalizedFirstChar = false;
/**
* @var boolean
*/
private $isQueryContext = false;
/**
* @since 2.5
*
* {@inheritDoc}
*/
public function getErrors() {
return $this->errors;
}
/**
* @since 2.5
*
* @param array $invalidCharacterList
*/
public function setInvalidCharacterList( array $invalidCharacterList ) {
$this->invalidCharacterList = $invalidCharacterList;
}
/**
* Corresponds to the $wgCapitalLinks setting
*
* @since 3.0
*
* @param boolean $isCapitalLinks
*/
public function isCapitalLinks( $isCapitalLinks ) {
$this->isCapitalLinks = (bool)$isCapitalLinks;
}
/**
* Whether upper case for the first character is required or not in case of
* $wgCapitalLinks = false.
*
* @since 2.5
*
* @param boolean $reqCapitalizedFirstChar
*/
public function reqCapitalizedFirstChar( $reqCapitalizedFirstChar ) {
$this->reqCapitalizedFirstChar = (bool)$reqCapitalizedFirstChar;
}
/**
* Whether or not the parsing is executed within a query context which may
* allow exceptions on the validation of invalid characters.
*
* @since 2.5
*
* @param boolean $isQueryContext
*/
public function isQueryContext( $isQueryContext ) {
$this->isQueryContext = (bool)$isQueryContext;
}
/**
* @since 2.5
*
* @param string $userValue
*
* @return array
*/
public function parse( $userValue ) {
$this->errors = [];
// #1727 <Foo> or <Foo-<Bar> are not permitted but
// Foo-<Bar will be converted to Foo-
$userValue = strip_tags(
htmlspecialchars_decode( $userValue )
);
if ( !$this->hasValidCharacters( $userValue ) ) {
return [ null, null, null ];
}
return $this->getNormalizedValueFrom( $userValue );
}
private function hasValidCharacters( $value ) {
if ( trim( $value ) === '' ) {
$this->errors[] = [ 'smw_emptystring' ];
return false;
}
$invalidCharacter = '';
foreach ( $this->invalidCharacterList as $character ) {
if ( strpos( $value, $character ) !== false ) {
$invalidCharacter = $character;
break;
}
}
// #1567, Only allowed in connection with a query context (e.g sort=#)
if ( $invalidCharacter === '' && strpos( $value, '#' ) !== false && !$this->isQueryContext ) {
$invalidCharacter = '#';
}
if ( $invalidCharacter !== '' ) {
// Replace selected control chars otherwise the error display becomes
// unreadable
$invalidCharacter = str_replace(
[ "\r", "\n", ],
[ "CR", "LF" ],
$invalidCharacter
);
$this->errors[] = [ 'smw-datavalue-property-invalid-character', $value, $invalidCharacter ];
return false;
}
// #676, only on a query context allow Foo.Bar
if ( $invalidCharacter === '' && !$this->isQueryContext && strpos( $value, '.' ) !== false ) {
$this->errors[] = [ 'smw-datavalue-property-invalid-chain', $value ];
return false;
}
return true;
}
private function getNormalizedValueFrom( $value ) {
$inverse = false;
$capitalizedName = '';
// slightly normalise label
$propertyName = $this->doNormalize(
ltrim( rtrim( $value, ' ]' ), ' [' ),
$this->isCapitalLinks
);
if ( $this->reqCapitalizedFirstChar ) {
$capitalizedName = $this->doNormalize( $propertyName, true );
}
// property refers to an inverse
if ( ( $propertyName !== '' ) && ( $propertyName { 0 } == '-' ) ) {
$propertyName = $this->doNormalize( (string)substr( $value, 1 ), $this->isCapitalLinks );
/// NOTE The cast is necessary at least in PHP 5.3.3 to get string '' instead of boolean false.
/// NOTE It is necessary to normalize again here, since normalization may uppercase the first letter.
$inverse = true;
}
return [ $propertyName, $capitalizedName, $inverse ];
}
private function doNormalize( $text, $isCapitalLinks ) {
$text = trim( $text );
if ( $isCapitalLinks ) {
$text = Localizer::getInstance()->getContentLanguage()->ucfirst( $text );
}
return str_replace( '_', ' ', $text );
}
}
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