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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
+ */
+
+/**
+ * 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.
+ */
+class Status extends StatusValue {
+ /** @var callable */
+ public $cleanCallback = false;
+
+ /**
+ * Succinct helper method to wrap a StatusValue
+ *
+ * This is 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;
+
+ return $result;
+ }
+
+ /**
+ * Backwards compatibility logic
+ *
+ * @param string $name
+ * @return mixed
+ * @throws RuntimeException
+ */
+ function __get( $name ) {
+ if ( $name === 'ok' ) {
+ return $this->isOK();
+ } elseif ( $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
+ */
+ function __set( $name, $value ) {
+ if ( $name === 'ok' ) {
+ $this->setOK( $value );
+ } elseif ( !property_exists( $this, $name ) ) {
+ // Caller is using undeclared ad-hoc properties
+ $this->$name = $value;
+ } else {
+ throw new RuntimeException( "Cannot set '$name' property." );
+ }
+ }
+
+ /**
+ * 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() {
+ list( $errorsOnlyStatus, $warningsOnlyStatus ) = parent::splitByErrorType();
+ $errorsOnlyStatus->cleanCallback =
+ $warningsOnlyStatus->cleanCallback = $this->cleanCallback;
+
+ return [ $errorsOnlyStatus, $warningsOnlyStatus ];
+ }
+
+ /**
+ * Returns the wrapped StatusValue object
+ * @return StatusValue
+ * @since 1.27
+ */
+ public function getStatusValue() {
+ return $this;
+ }
+
+ /**
+ * @param array $params
+ * @return array
+ */
+ protected function cleanParams( array $params ) {
+ if ( !$this->cleanCallback ) {
+ return $params;
+ }
+ $cleanParams = [];
+ foreach ( $params as $i => $param ) {
+ $cleanParams[$i] = call_user_func( $this->cleanCallback, $param );
+ }
+ return $cleanParams;
+ }
+
+ /**
+ * @param string|Language|null $lang Language to use for processing
+ * messages, or null to default to the user language.
+ * @return Language
+ */
+ protected function languageFromParam( $lang ) {
+ global $wgLang;
+
+ if ( $lang === null ) {
+ // @todo: Use RequestContext::getMain()->getLanguage() instead
+ return $wgLang;
+ } elseif ( $lang instanceof Language || $lang instanceof StubUserLang ) {
+ return $lang;
+ } else {
+ return Language::factory( $lang );
+ }
+ }
+
+ /**
+ * Get the error list as a wikitext formatted list
+ *
+ * @param string|bool $shortContext A short enclosing context message name, to
+ * be used when there is a single error
+ * @param string|bool $longContext A long enclosing context message name, for a list
+ * @param string|Language $lang Language to use for processing messages
+ * @return string
+ */
+ public function getWikiText( $shortContext = false, $longContext = false, $lang = null ) {
+ $lang = $this->languageFromParam( $lang );
+
+ $rawErrors = $this->getErrors();
+ if ( count( $rawErrors ) == 0 ) {
+ if ( $this->isOK() ) {
+ $this->fatal( 'internalerror_info',
+ __METHOD__ . " called for a good result, this is incorrect\n" );
+ } else {
+ $this->fatal( 'internalerror_info',
+ __METHOD__ . ": Invalid result object: no error text but not OK\n" );
+ }
+ $rawErrors = $this->getErrors(); // just added a fatal
+ }
+ if ( count( $rawErrors ) == 1 ) {
+ $s = $this->getErrorMessage( $rawErrors[0], $lang )->plain();
+ if ( $shortContext ) {
+ $s = wfMessage( $shortContext, $s )->inLanguage( $lang )->plain();
+ } elseif ( $longContext ) {
+ $s = wfMessage( $longContext, "* $s\n" )->inLanguage( $lang )->plain();
+ }
+ } else {
+ $errors = $this->getErrorMessageArray( $rawErrors, $lang );
+ foreach ( $errors as &$error ) {
+ $error = $error->plain();
+ }
+ $s = '* ' . implode( "\n* ", $errors ) . "\n";
+ if ( $longContext ) {
+ $s = wfMessage( $longContext, $s )->inLanguage( $lang )->plain();
+ } elseif ( $shortContext ) {
+ $s = wfMessage( $shortContext, "\n$s\n" )->inLanguage( $lang )->plain();
+ }
+ }
+ return $s;
+ }
+
+ /**
+ * Get a bullet list of the errors as a Message object.
+ *
+ * $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.
+ *
+ * @param string|string[]|bool $shortContext A message name or an array of message names.
+ * @param string|string[]|bool $longContext A message name or an array of message names.
+ * @param string|Language $lang Language to use for processing messages
+ * @return Message
+ */
+ public function getMessage( $shortContext = false, $longContext = false, $lang = null ) {
+ $lang = $this->languageFromParam( $lang );
+
+ $rawErrors = $this->getErrors();
+ if ( count( $rawErrors ) == 0 ) {
+ if ( $this->isOK() ) {
+ $this->fatal( 'internalerror_info',
+ __METHOD__ . " called for a good result, this is incorrect\n" );
+ } else {
+ $this->fatal( 'internalerror_info',
+ __METHOD__ . ": Invalid result object: no error text but not OK\n" );
+ }
+ $rawErrors = $this->getErrors(); // just added a fatal
+ }
+ if ( count( $rawErrors ) == 1 ) {
+ $s = $this->getErrorMessage( $rawErrors[0], $lang );
+ if ( $shortContext ) {
+ $s = wfMessage( $shortContext, $s )->inLanguage( $lang );
+ } elseif ( $longContext ) {
+ $wrapper = new RawMessage( "* \$1\n" );
+ $wrapper->params( $s )->parse();
+ $s = wfMessage( $longContext, $wrapper )->inLanguage( $lang );
+ }
+ } else {
+ $msgs = $this->getErrorMessageArray( $rawErrors, $lang );
+ $msgCount = count( $msgs );
+
+ $s = new RawMessage( '* $' . implode( "\n* \$", range( 1, $msgCount ) ) );
+ $s->params( $msgs )->parse();
+
+ if ( $longContext ) {
+ $s = wfMessage( $longContext, $s )->inLanguage( $lang );
+ } elseif ( $shortContext ) {
+ $wrapper = new RawMessage( "\n\$1\n", [ $s ] );
+ $wrapper->parse();
+ $s = wfMessage( $shortContext, $wrapper )->inLanguage( $lang );
+ }
+ }
+
+ return $s;
+ }
+
+ /**
+ * Return the message for a single error
+ *
+ * The code string can be used a message key with per-language versions.
+ * If $error is an array, the "params" field is a list of parameters for the message.
+ *
+ * @param array|string $error Code string or (key: code string, params: string[]) map
+ * @param string|Language $lang Language to use for processing messages
+ * @return Message
+ */
+ protected function getErrorMessage( $error, $lang = null ) {
+ if ( is_array( $error ) ) {
+ if ( isset( $error['message'] ) && $error['message'] instanceof Message ) {
+ $msg = $error['message'];
+ } elseif ( isset( $error['message'] ) && isset( $error['params'] ) ) {
+ $msg = wfMessage( $error['message'],
+ array_map( 'wfEscapeWikiText', $this->cleanParams( $error['params'] ) ) );
+ } else {
+ $msgName = array_shift( $error );
+ $msg = wfMessage( $msgName,
+ array_map( 'wfEscapeWikiText', $this->cleanParams( $error ) ) );
+ }
+ } elseif ( is_string( $error ) ) {
+ $msg = wfMessage( $error );
+ } else {
+ throw new UnexpectedValueException( "Got " . get_class( $error ) . " for key." );
+ }
+
+ $msg->inLanguage( $this->languageFromParam( $lang ) );
+ return $msg;
+ }
+
+ /**
+ * Get the error message as HTML. This is done by parsing the wikitext error message
+ * @param string|bool $shortContext A short enclosing context message name, to
+ * be used when there is a single error
+ * @param string|bool $longContext A long enclosing context message name, for a list
+ * @param string|Language|null $lang Language to use for processing messages
+ * @return string
+ */
+ public function getHTML( $shortContext = false, $longContext = false, $lang = null ) {
+ $lang = $this->languageFromParam( $lang );
+ $text = $this->getWikiText( $shortContext, $longContext, $lang );
+ $out = MessageCache::singleton()->parse( $text, null, true, true, $lang );
+ return $out instanceof ParserOutput
+ ? $out->getText( [ 'enableSectionEditLinks' => false ] )
+ : $out;
+ }
+
+ /**
+ * Return an array with a Message object for each error.
+ * @param array $errors
+ * @param string|Language $lang Language to use for processing messages
+ * @return Message[]
+ */
+ protected function getErrorMessageArray( $errors, $lang = null ) {
+ $lang = $this->languageFromParam( $lang );
+ return array_map( function ( $e ) use ( $lang ) {
+ return $this->getErrorMessage( $e, $lang );
+ }, $errors );
+ }
+
+ /**
+ * Get the list of errors (but not warnings)
+ *
+ * @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.
+ * @deprecated since 1.25
+ */
+ public function getErrorsArray() {
+ return $this->getStatusArray( 'error' );
+ }
+
+ /**
+ * Get the list of warnings (but not errors)
+ *
+ * @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.
+ * @deprecated since 1.25
+ */
+ public function getWarningsArray() {
+ return $this->getStatusArray( 'warning' );
+ }
+
+ /**
+ * Returns a list of status messages of the given type (or all if false)
+ *
+ * @note: this handles RawMessage poorly
+ *
+ * @param string|bool $type
+ * @return array
+ */
+ protected function getStatusArray( $type = false ) {
+ $result = [];
+
+ foreach ( $this->getErrors() as $error ) {
+ if ( $type === false || $error['type'] === $type ) {
+ if ( $error['message'] instanceof MessageSpecifier ) {
+ $result[] = array_merge(
+ [ $error['message']->getKey() ],
+ $error['message']->getParams()
+ );
+ } elseif ( $error['params'] ) {
+ $result[] = array_merge( [ $error['message'] ], $error['params'] );
+ } else {
+ $result[] = [ $error['message'] ];
+ }
+ }
+ }
+
+ return $result;
+ }
+
+ /**
+ * Don't save the callback when serializing, because Closures can't be
+ * serialized and we're going to clear it in __wakeup anyway.
+ */
+ function __sleep() {
+ $keys = array_keys( get_object_vars( $this ) );
+ return array_diff( $keys, [ 'cleanCallback' ] );
+ }
+
+ /**
+ * Sanitize the callback parameter on wakeup, to avoid arbitrary execution.
+ */
+ function __wakeup() {
+ $this->cleanCallback = false;
+ }
+}
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