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<?php
/**
* Generic operation result.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
* http://www.gnu.org/copyleft/gpl.html
*
* @file
*/
namespace MediaWiki\Status;
use MediaWiki\Context\IContextSource;
use MediaWiki\Context\RequestContext;
use MediaWiki\Language\Language;
use MediaWiki\MediaWikiServices;
use MediaWiki\Message\Message;
use MediaWiki\StubObject\StubUserLang;
use MessageLocalizer;
use RuntimeException;
use StatusValue;
/**
* Generic operation result class
* Has warning/error list, boolean status and arbitrary value
*
* "Good" means the operation was completed with no warnings or errors.
*
* "OK" means the operation was partially or wholly completed.
*
* An operation which is not OK should have errors so that the user can be
* informed as to what went wrong. Calling the fatal() function sets an error
* message and simultaneously switches off the OK flag.
*
* The recommended pattern for Status objects is to return a Status object
* unconditionally, i.e. both on success and on failure -- so that the
* developer of the calling code is reminded that the function can fail, and
* so that a lack of error-handling will be explicit.
*
* @newable
*/
class Status extends StatusValue {
/** @var callable|false */
public $cleanCallback = false;
/** @var MessageLocalizer|null */
protected $messageLocalizer;
private ?StatusFormatter $formatter = null;
/**
* Succinct helper method to wrap a StatusValue
*
* This is useful when formatting StatusValue objects:
* @code
* $this->getOutput()->addHtml( Status::wrap( $sv )->getHTML() );
* @endcode
*
* @param StatusValue|Status $sv
* @return Status
*/
public static function wrap( $sv ) {
if ( $sv instanceof static ) {
return $sv;
}
$result = new static();
$result->ok =& $sv->ok;
$result->errors =& $sv->errors;
$result->value =& $sv->value;
$result->successCount =& $sv->successCount;
$result->failCount =& $sv->failCount;
$result->success =& $sv->success;
$result->statusData =& $sv->statusData;
return $result;
}
/**
* Backwards compatibility logic
*
* @param string $name
* @return mixed
* @throws RuntimeException
*/
public function __get( $name ) {
if ( $name === 'ok' ) {
return $this->isOK();
}
if ( $name === 'errors' ) {
return $this->getErrors();
}
throw new RuntimeException( "Cannot get '$name' property." );
}
/**
* Change operation result
* Backwards compatibility logic
*
* @param string $name
* @param mixed $value
* @throws RuntimeException
*/
public function __set( $name, $value ) {
if ( $name === 'ok' ) {
$this->setOK( $value );
} else {
throw new RuntimeException( "Cannot set '$name' property." );
}
}
/**
* Makes this Status object use the given localizer instead of the global one.
* If it is an IContextSource or a ResourceLoader Context, it will also be used to
* determine the interface language.
* @note This setting does not survive serialization. That's usually for the best
* (there's no guarantee we'll still have the same localization settings after
* unserialization); it is the caller's responsibility to set the localizer again
* if needed.
* @param MessageLocalizer $messageLocalizer
*
* @deprecated since 1.42, use FormatterFactory::getStatusFormatter instead.
*/
public function setMessageLocalizer( MessageLocalizer $messageLocalizer ) {
// TODO: hard deprecate after switching callers to StatusFormatter
$this->messageLocalizer = $messageLocalizer;
$this->formatter = null;
}
private function getFormatter(): StatusFormatter {
if ( !$this->formatter ) {
$context = RequestContext::getMain();
// HACK: only works for IContextSource objects.
if ( $this->messageLocalizer && $this->messageLocalizer instanceof IContextSource ) {
$context = $this->messageLocalizer;
}
$formatterFactory = MediaWikiServices::getInstance()->getFormatterFactory();
$this->formatter = $formatterFactory->getStatusFormatter( $context );
}
return $this->formatter;
}
/**
* Splits this Status object into two new Status objects, one which contains only
* the error messages, and one that contains the warnings, only. The returned array is
* defined as:
* [
* 0 => object(Status) # The Status with error messages, only
* 1 => object(Status) # The Status with warning messages, only
* ]
*
* @return Status[]
*/
public function splitByErrorType() {
[ $errorsOnlyStatus, $warningsOnlyStatus ] = parent::splitByErrorType();
// phan/phan#2133?
'@phan-var Status $errorsOnlyStatus';
'@phan-var Status $warningsOnlyStatus';
if ( $this->messageLocalizer ) {
$errorsOnlyStatus->setMessageLocalizer = $this->messageLocalizer;
$warningsOnlyStatus->setMessageLocalizer = $this->messageLocalizer;
}
if ( $this->formatter ) {
$errorsOnlyStatus->formatter = $this->formatter;
$warningsOnlyStatus->formatter = $this->formatter;
}
$errorsOnlyStatus->cleanCallback = $warningsOnlyStatus->cleanCallback = $this->cleanCallback;
return [ $errorsOnlyStatus, $warningsOnlyStatus ];
}
/**
* Returns the wrapped StatusValue object
* @return StatusValue
* @since 1.27
*/
public function getStatusValue() {
return $this;
}
/**
* Get the error list as a wikitext formatted list
*
* All message parameters that were provided as strings will be escaped with wfEscapeWikiText.
* This is mostly a historical accident and often undesirable (T368821).
* - To avoid this behavior when producing the Status, pass MessageSpecifier objects to methods
* such as `$status->fatal()`, instead of separate key and params parameters.
* - To avoid this behavior when consuming the Status, use the `$status->getMessages()` method
* instead, and display each message separately (or combine then with `Message::listParams()`).
*
* @deprecated since 1.42, use StatusFormatter instead.
*
* @param string|false $shortContext A short enclosing context message name, to
* be used when there is a single error
* @param string|false $longContext A long enclosing context message name, for a list
* @param string|Language|StubUserLang|null $lang Language to use for processing messages
* @return string
*/
public function getWikiText( $shortContext = false, $longContext = false, $lang = null ) {
return $this->getFormatter()->getWikiText( $this, [
'shortContext' => $shortContext,
'longContext' => $longContext,
'lang' => $lang,
'cleanCallback' => $this->cleanCallback
] );
}
/**
* Get a bullet list of the errors as a Message object.
*
* All message parameters that were provided as strings will be escaped with wfEscapeWikiText.
* This is mostly a historical accident and often undesirable (T368821).
* - To avoid this behavior when producing the Status, pass MessageSpecifier objects to methods
* such as `$status->fatal()`, instead of separate key and params parameters.
* - To avoid this behavior when consuming the Status, use the `$status->getMessages()` method
* instead, and display each message separately (or combine then with `Message::listParams()`).
*
* $shortContext and $longContext can be used to wrap the error list in some text.
* $shortContext will be preferred when there is a single error; $longContext will be
* preferred when there are multiple ones. In either case, $1 will be replaced with
* the list of errors.
*
* $shortContext is assumed to use $1 as an inline parameter: if there is a single item,
* it will not be made into a list; if there are multiple items, newlines will be inserted
* around the list.
* $longContext is assumed to use $1 as a standalone parameter; it will always receive a list.
*
* If both parameters are missing, and there is only one error, no bullet will be added.
*
* @deprecated since 1.42, use StatusFormatter instead.
*
* @param string|string[]|false $shortContext A message name or an array of message names.
* @param string|string[]|false $longContext A message name or an array of message names.
* @param string|Language|StubUserLang|null $lang Language to use for processing messages
* @return Message
*/
public function getMessage( $shortContext = false, $longContext = false, $lang = null ) {
return $this->getFormatter()->getMessage( $this, [
'shortContext' => $shortContext,
'longContext' => $longContext,
'lang' => $lang,
'cleanCallback' => $this->cleanCallback
] );
}
/**
* Try to convert the status to a PSR-3 friendly format. The output will be similar to
* getWikiText( false, false, 'en' ), but message parameters will be extracted into the
* context array with parameter names 'parameter1' etc. when possible.
* A predefined context array may be passed for convenience.
*
* @deprecated since 1.42, use StatusFormatter instead.
*
* @return array A pair of (message, context) suitable for passing to a PSR-3 logger.
* @phan-return array{0:string,1:(int|float|string)[]}
*/
public function getPsr3MessageAndContext( array $context = [] ): array {
return $this->getFormatter()->getPsr3MessageAndContext( $this, $context );
}
/**
* Get the error message as HTML. This is done by parsing the wikitext error message
*
* All message parameters that were provided as strings will be escaped with wfEscapeWikiText.
* This is mostly a historical accident and often undesirable (T368821).
* - To avoid this behavior when producing the Status, pass MessageSpecifier objects to methods
* such as `$status->fatal()`, instead of separate key and params parameters.
* - To avoid this behavior when consuming the Status, use the `$status->getMessages()` method
* instead, and display each message separately (or combine then with `Message::listParams()`).
*
* @deprecated since 1.42, use StatusFormatter instead.
*
* @param string|false $shortContext A short enclosing context message name, to
* be used when there is a single error
* @param string|false $longContext A long enclosing context message name, for a list
* @param string|Language|StubUserLang|null $lang Language to use for processing messages
* @return string
*/
public function getHTML( $shortContext = false, $longContext = false, $lang = null ) {
return $this->getFormatter()->getHTML( $this, [
'shortContext' => $shortContext,
'longContext' => $longContext,
'lang' => $lang,
'cleanCallback' => $this->cleanCallback
] );
}
/**
* Get the list of errors (but not warnings)
*
* @deprecated since 1.43 Use `->getMessages( 'error' )` instead
* @return array[] A list in which each entry is an array with a message key as its first element.
* The remaining array elements are the message parameters.
* @phan-return non-empty-array[]
*/
public function getErrorsArray() {
return $this->getStatusArray( 'error' );
}
/**
* Get the list of warnings (but not errors)
*
* @deprecated since 1.43 Use `->getMessages( 'warning' )` instead
* @return array[] A list in which each entry is an array with a message key as its first element.
* The remaining array elements are the message parameters.
* @phan-return non-empty-array[]
*/
public function getWarningsArray() {
return $this->getStatusArray( 'warning' );
}
/**
* Don't save the callback when serializing, because Closures can't be
* serialized and we're going to clear it in __wakeup anyway.
* Don't save the localizer, because it can be pretty much anything. Restoring it is
* the caller's responsibility (otherwise it will just fall back to the global request context).
* Same for the formatter, which is likely to contain a localizer.
* @return array
*/
public function __sleep() {
$keys = array_keys( get_object_vars( $this ) );
return array_diff( $keys, [ 'cleanCallback', 'messageLocalizer', 'formatter' ] );
}
/**
* Sanitize the callback parameter on wakeup, to avoid arbitrary execution.
*/
public function __wakeup() {
$this->cleanCallback = false;
$this->messageLocalizer = null;
$this->formatter = null;
}
}
/** @deprecated class alias since 1.41 */
class_alias( Status::class, 'Status' );