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<?php
/**
* 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.
*/
class Status {
var $ok = true;
var $value;
/** Counters for batch operations */
var $successCount = 0, $failCount = 0;
/*semi-private*/ var $errors = array();
/*semi-private*/ var $cleanCallback = false;
/**
* Factory function for fatal errors
*/
static function newFatal( $message /*, parameters...*/ ) {
$params = func_get_args();
$result = new self;
call_user_func_array( array( &$result, 'error' ), $params );
$result->ok = false;
return $result;
}
static function newGood( $value = null ) {
$result = new self;
$result->value = $value;
return $result;
}
function setResult( $ok, $value = null ) {
$this->ok = $ok;
$this->value = $value;
}
function isGood() {
return $this->ok && !$this->errors;
}
function isOK() {
return $this->ok;
}
function warning( $message /*, parameters... */ ) {
$params = array_slice( func_get_args(), 1 );
$this->errors[] = array(
'type' => 'warning',
'message' => $message,
'params' => $params );
}
/**
* Add an error, do not set fatal flag
* This can be used for non-fatal errors
*/
function error( $message /*, parameters... */ ) {
$params = array_slice( func_get_args(), 1 );
$this->errors[] = array(
'type' => 'error',
'message' => $message,
'params' => $params );
}
/**
* Add an error and set OK to false, indicating that the operation as a whole was fatal
*/
function fatal( $message /*, parameters... */ ) {
$params = array_slice( func_get_args(), 1 );
$this->errors[] = array(
'type' => 'error',
'message' => $message,
'params' => $params );
$this->ok = false;
}
/**
* Sanitize the callback parameter on wakeup, to avoid arbitrary execution.
*/
function __wakeup() {
$this->cleanCallback = false;
}
protected function cleanParams( $params ) {
if ( !$this->cleanCallback ) {
return $params;
}
$cleanParams = array();
foreach ( $params as $i => $param ) {
$cleanParams[$i] = call_user_func( $this->cleanCallback, $param );
}
return $cleanParams;
}
protected function getItemXML( $item ) {
$params = $this->cleanParams( $item['params'] );
$xml = "<{$item['type']}>\n" .
Xml::element( 'message', null, $item['message'] ) . "\n" .
Xml::element( 'text', null, wfMsgReal( $item['message'], $params ) ) ."\n";
foreach ( $params as $param ) {
$xml .= Xml::element( 'param', null, $param );
}
$xml .= "</{$this->type}>\n";
return $xml;
}
/**
* Get the error list as XML
*/
function getXML() {
$xml = "<errors>\n";
foreach ( $this->errors as $error ) {
$xml .= $this->getItemXML( $error );
}
$xml .= "</errors>\n";
return $xml;
}
/**
* Get the error list as a wikitext formatted list
* @param string $shortContext A short enclosing context message name, to be used
* when there is a single error
* @param string $longContext A long enclosing context message name, for a list
*/
function getWikiText( $shortContext = false, $longContext = false ) {
if ( count( $this->errors ) == 0 ) {
if ( $this->ok ) {
$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" );
}
}
if ( count( $this->errors ) == 1 ) {
$params = array_map( 'wfEscapeWikiText', $this->cleanParams( $this->errors[0]['params'] ) );
$s = wfMsgReal( $this->errors[0]['message'], $params, true, false, false );
if ( $shortContext ) {
$s = wfMsgNoTrans( $shortContext, $s );
} elseif ( $longContext ) {
$s = wfMsgNoTrans( $longContext, "* $s\n" );
}
} else {
$s = '';
foreach ( $this->errors as $error ) {
$params = array_map( 'wfEscapeWikiText', $this->cleanParams( $error['params'] ) );
$s .= '* ' . wfMsgReal( $error['message'], $params, true, false, false ) . "\n";
}
if ( $longContext ) {
$s = wfMsgNoTrans( $longContext, $s );
} elseif ( $shortContext ) {
$s = wfMsgNoTrans( $shortContext, "\n$s\n" );
}
}
return $s;
}
/**
* Merge another status object into this one
*/
function merge( $other, $overwriteValue = false ) {
$this->errors = array_merge( $this->errors, $other->errors );
$this->ok = $this->ok && $other->ok;
if ( $overwriteValue ) {
$this->value = $other->value;
}
$this->successCount += $other->successCount;
$this->failCount += $other->failCount;
}
function getErrorsArray() {
$result = array();
foreach ( $this->errors as $error ) {
if ( $error['type'] == 'error' )
if( $error['params'] )
$result[] = array_merge( array( $error['message'] ), $error['params'] );
else
$result[] = $error['message'];
}
return $result;
}
/**
* Returns true if the specified message is present as a warning or error
*/
function hasMessage( $msg ) {
foreach ( $this->errors as $error ) {
if ( $error['message'] === $msg ) {
return true;
}
}
return false;
}
}
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