mirror of
https://gerrit.wikimedia.org/r/mediawiki/extensions/ParserFunctions
synced 2024-12-24 05:44:03 +00:00
768 lines
22 KiB
PHP
768 lines
22 KiB
PHP
<?php
|
|
|
|
class ExtParserFunctions {
|
|
var $mExprParser;
|
|
var $mTimeCache = array();
|
|
var $mTimeChars = 0;
|
|
var $mMaxTimeChars = 6000; # ~10 seconds
|
|
|
|
function clearState(&$parser) {
|
|
$this->mTimeChars = 0;
|
|
$parser->pf_ifexist_breakdown = array();
|
|
$parser->pf_markerRegex = null;
|
|
return true;
|
|
}
|
|
|
|
/**
|
|
* Get the marker regex. Cached.
|
|
*/
|
|
function getMarkerRegex( $parser ) {
|
|
if ( isset( $parser->pf_markerRegex ) ) {
|
|
return $parser->pf_markerRegex;
|
|
}
|
|
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$prefix = preg_quote( $parser->uniqPrefix(), '/' );
|
|
|
|
// The first line represents Parser from release 1.12 forward.
|
|
// subsequent lines are hacks to accomodate old Mediawiki versions.
|
|
if ( defined('Parser::MARKER_SUFFIX') )
|
|
$suffix = preg_quote( Parser::MARKER_SUFFIX, '/' );
|
|
elseif ( isset($parser->mMarkerSuffix) )
|
|
$suffix = preg_quote( $parser->mMarkerSuffix, '/' );
|
|
elseif ( defined('MW_PARSER_VERSION') &&
|
|
strcmp( MW_PARSER_VERSION, '1.6.1' ) > 0 )
|
|
$suffix = "QINU\x07";
|
|
else $suffix = 'QINU';
|
|
|
|
$parser->pf_markerRegex = '/' .$prefix. '(?:(?!' .$suffix. ').)*' . $suffix . '/us';
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $parser->pf_markerRegex;
|
|
}
|
|
|
|
// Removes unique markers from passed parameters, used by string functions.
|
|
private function killMarkers ( $parser, $text ) {
|
|
return preg_replace( $this->getMarkerRegex( $parser ), '' , $text );
|
|
}
|
|
|
|
function &getExprParser() {
|
|
if ( !isset( $this->mExprParser ) ) {
|
|
if ( !class_exists( 'ExprParser' ) ) {
|
|
require( dirname( __FILE__ ) . '/Expr.php' );
|
|
}
|
|
$this->mExprParser = new ExprParser;
|
|
}
|
|
return $this->mExprParser;
|
|
}
|
|
|
|
function expr( &$parser, $expr = '' ) {
|
|
try {
|
|
return $this->getExprParser()->doExpression( $expr );
|
|
} catch(ExprError $e) {
|
|
return $e->getMessage();
|
|
}
|
|
}
|
|
|
|
function ifexpr( &$parser, $expr = '', $then = '', $else = '' ) {
|
|
try{
|
|
if($this->getExprParser()->doExpression( $expr )) {
|
|
return $then;
|
|
} else {
|
|
return $else;
|
|
}
|
|
} catch (ExprError $e){
|
|
return $e->getMessage();
|
|
}
|
|
}
|
|
|
|
function ifexprObj( $parser, $frame, $args ) {
|
|
$expr = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$then = isset( $args[1] ) ? $args[1] : '';
|
|
$else = isset( $args[2] ) ? $args[2] : '';
|
|
$result = $this->ifexpr( $parser, $expr, $then, $else );
|
|
if ( is_object( $result ) ) {
|
|
$result = trim( $frame->expand( $result ) );
|
|
}
|
|
return $result;
|
|
}
|
|
|
|
function ifHook( &$parser, $test = '', $then = '', $else = '' ) {
|
|
if ( $test !== '' ) {
|
|
return $then;
|
|
} else {
|
|
return $else;
|
|
}
|
|
}
|
|
|
|
function ifObj( &$parser, $frame, $args ) {
|
|
$test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
if ( $test !== '' ) {
|
|
return isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
|
|
} else {
|
|
return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
|
|
}
|
|
}
|
|
|
|
function ifeq( &$parser, $left = '', $right = '', $then = '', $else = '' ) {
|
|
if ( $left == $right ) {
|
|
return $then;
|
|
} else {
|
|
return $else;
|
|
}
|
|
}
|
|
|
|
function ifeqObj( &$parser, $frame, $args ) {
|
|
$left = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$right = isset( $args[1] ) ? trim( $frame->expand( $args[1] ) ) : '';
|
|
if ( $left == $right ) {
|
|
return isset( $args[2] ) ? trim( $frame->expand( $args[2] ) ) : '';
|
|
} else {
|
|
return isset( $args[3] ) ? trim( $frame->expand( $args[3] ) ) : '';
|
|
}
|
|
}
|
|
|
|
function iferror( &$parser, $test = '', $then = '', $else = false ) {
|
|
if ( preg_match( '/<(?:strong|span|p|div)\s(?:[^\s>]*\s+)*?class="(?:[^"\s>]*\s+)*?error(?:\s[^">]*)?"/', $test ) ) {
|
|
return $then;
|
|
} elseif ( $else === false ) {
|
|
return $test;
|
|
} else {
|
|
return $else;
|
|
}
|
|
}
|
|
|
|
function iferrorObj( &$parser, $frame, $args ) {
|
|
$test = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$then = isset( $args[1] ) ? $args[1] : false;
|
|
$else = isset( $args[2] ) ? $args[2] : false;
|
|
$result = $this->iferror( $parser, $test, $then, $else );
|
|
if ( $result === false ) {
|
|
return '';
|
|
} else {
|
|
return trim( $frame->expand( $result ) );
|
|
}
|
|
}
|
|
|
|
function switchHook( &$parser /*,...*/ ) {
|
|
$args = func_get_args();
|
|
array_shift( $args );
|
|
$primary = trim(array_shift($args));
|
|
$found = $defaultFound = false;
|
|
$parts = null;
|
|
$default = null;
|
|
$mwDefault =& MagicWord::get( 'default' );
|
|
foreach( $args as $arg ) {
|
|
$parts = array_map( 'trim', explode( '=', $arg, 2 ) );
|
|
if ( count( $parts ) == 2 ) {
|
|
# Found "="
|
|
if ( $found || $parts[0] == $primary ) {
|
|
# Found a match, return now
|
|
return $parts[1];
|
|
} elseif ( $defaultFound || $mwDefault->matchStartAndRemove( $parts[0] ) ) {
|
|
$default = $parts[1];
|
|
} # else wrong case, continue
|
|
} elseif ( count( $parts ) == 1 ) {
|
|
# Multiple input, single output
|
|
# If the value matches, set a flag and continue
|
|
if ( $parts[0] == $primary ) {
|
|
$found = true;
|
|
} elseif ( $mwDefault->matchStartAndRemove( $parts[0] ) ) {
|
|
$defaultFound = true;
|
|
}
|
|
} # else RAM corruption due to cosmic ray?
|
|
}
|
|
# Default case
|
|
# Check if the last item had no = sign, thus specifying the default case
|
|
if ( count( $parts ) == 1) {
|
|
return $parts[0];
|
|
} elseif ( !is_null( $default ) ) {
|
|
return $default;
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
function switchObj( $parser, $frame, $args ) {
|
|
if ( count( $args ) == 0 ) {
|
|
return '';
|
|
}
|
|
$primary = trim( $frame->expand( array_shift( $args ) ) );
|
|
$found = $defaultFound = false;
|
|
$default = null;
|
|
$lastItemHadNoEquals = false;
|
|
$mwDefault =& MagicWord::get( 'default' );
|
|
foreach ( $args as $arg ) {
|
|
$bits = $arg->splitArg();
|
|
$nameNode = $bits['name'];
|
|
$index = $bits['index'];
|
|
$valueNode = $bits['value'];
|
|
|
|
if ( $index === '' ) {
|
|
# Found "="
|
|
$lastItemHadNoEquals = false;
|
|
$test = trim( $frame->expand( $nameNode ) );
|
|
if ( $found ) {
|
|
# Multiple input match
|
|
return trim( $frame->expand( $valueNode ) );
|
|
} else {
|
|
$test = trim( $frame->expand( $nameNode ) );
|
|
if ( $test == $primary ) {
|
|
# Found a match, return now
|
|
return trim( $frame->expand( $valueNode ) );
|
|
} elseif ( $defaultFound || $mwDefault->matchStartAndRemove( $test ) ) {
|
|
$default = $valueNode;
|
|
} # else wrong case, continue
|
|
}
|
|
} else {
|
|
# Multiple input, single output
|
|
# If the value matches, set a flag and continue
|
|
$lastItemHadNoEquals = true;
|
|
$test = trim( $frame->expand( $valueNode ) );
|
|
if ( $test == $primary ) {
|
|
$found = true;
|
|
} elseif ( $mwDefault->matchStartAndRemove( $test ) ) {
|
|
$defaultFound = true;
|
|
}
|
|
}
|
|
}
|
|
# Default case
|
|
# Check if the last item had no = sign, thus specifying the default case
|
|
if ( $lastItemHadNoEquals ) {
|
|
return $test;
|
|
} elseif ( !is_null( $default ) ) {
|
|
return trim( $frame->expand( $default ) );
|
|
} else {
|
|
return '';
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Returns the absolute path to a subpage, relative to the current article
|
|
* title. Treats titles as slash-separated paths.
|
|
*
|
|
* Following subpage link syntax instead of standard path syntax, an
|
|
* initial slash is treated as a relative path, and vice versa.
|
|
*/
|
|
public function rel2abs( &$parser , $to = '' , $from = '' ) {
|
|
|
|
$from = trim($from);
|
|
if( $from == '' ) {
|
|
$from = $parser->getTitle()->getPrefixedText();
|
|
}
|
|
|
|
$to = rtrim( $to , ' /' );
|
|
|
|
// if we have an empty path, or just one containing a dot
|
|
if( $to == '' || $to == '.' ) {
|
|
return $from;
|
|
}
|
|
|
|
// if the path isn't relative
|
|
if ( substr( $to , 0 , 1) != '/' &&
|
|
substr( $to , 0 , 2) != './' &&
|
|
substr( $to , 0 , 3) != '../' &&
|
|
$to != '..' )
|
|
{
|
|
$from = '';
|
|
}
|
|
// Make a long path, containing both, enclose it in /.../
|
|
$fullPath = '/' . $from . '/' . $to . '/';
|
|
|
|
// remove redundant current path dots
|
|
$fullPath = preg_replace( '!/(\./)+!', '/', $fullPath );
|
|
|
|
// remove double slashes
|
|
$fullPath = preg_replace( '!/{2,}!', '/', $fullPath );
|
|
|
|
// remove the enclosing slashes now
|
|
$fullPath = trim( $fullPath , '/' );
|
|
$exploded = explode ( '/' , $fullPath );
|
|
$newExploded = array();
|
|
|
|
foreach ( $exploded as $current ) {
|
|
if( $current == '..' ) { // removing one level
|
|
if( !count( $newExploded ) ){
|
|
// attempted to access a node above root node
|
|
wfLoadExtensionMessages( 'ParserFunctions' );
|
|
return '<strong class="error">' . wfMsgForContent( 'pfunc_rel2abs_invalid_depth', $fullPath ) . '</strong>';
|
|
}
|
|
// remove last level from the stack
|
|
array_pop( $newExploded );
|
|
} else {
|
|
// add the current level to the stack
|
|
$newExploded[] = $current;
|
|
}
|
|
}
|
|
|
|
// we can now join it again
|
|
return implode( '/' , $newExploded );
|
|
}
|
|
|
|
function incrementIfexistCount( $parser, $frame ) {
|
|
// Don't let this be called more than a certain number of times. It tends to make the database explode.
|
|
global $wgExpensiveParserFunctionLimit;
|
|
$parser->mExpensiveFunctionCount++;
|
|
if ( $frame ) {
|
|
$pdbk = $frame->getPDBK( 1 );
|
|
if ( !isset( $parser->pf_ifexist_breakdown[$pdbk] ) ) {
|
|
$parser->pf_ifexist_breakdown[$pdbk] = 0;
|
|
}
|
|
$parser->pf_ifexist_breakdown[$pdbk] ++;
|
|
}
|
|
return $parser->mExpensiveFunctionCount <= $wgExpensiveParserFunctionLimit;
|
|
}
|
|
|
|
function ifexist( &$parser, $title = '', $then = '', $else = '' ) {
|
|
return $this->ifexistCommon( $parser, false, $title, $then, $else );
|
|
}
|
|
|
|
function ifexistCommon( &$parser, $frame, $titletext = '', $then = '', $else = '' ) {
|
|
global $wgContLang;
|
|
$title = Title::newFromText( $titletext );
|
|
$wgContLang->findVariantLink( $titletext, $title, true );
|
|
if ( $title ) {
|
|
if( $title->getNamespace() == NS_MEDIA ) {
|
|
/* If namespace is specified as NS_MEDIA, then we want to
|
|
* check the physical file, not the "description" page.
|
|
*/
|
|
if ( !$this->incrementIfexistCount( $parser, $frame ) ) {
|
|
return $else;
|
|
}
|
|
$file = wfFindFile($title);
|
|
if ( !$file ) {
|
|
return $else;
|
|
}
|
|
$parser->mOutput->addImage($file->getName());
|
|
return $file->exists() ? $then : $else;
|
|
} elseif( $title->getNamespace() == NS_SPECIAL ) {
|
|
/* Don't bother with the count for special pages,
|
|
* since their existence can be checked without
|
|
* accessing the database.
|
|
*/
|
|
return SpecialPage::exists( $title->getDBkey() ) ? $then : $else;
|
|
} elseif( $title->isExternal() ) {
|
|
/* Can't check the existence of pages on other sites,
|
|
* so just return $else. Makes a sort of sense, since
|
|
* they don't exist _locally_.
|
|
*/
|
|
return $else;
|
|
} else {
|
|
$pdbk = $title->getPrefixedDBkey();
|
|
$lc = LinkCache::singleton();
|
|
if ( !$this->incrementIfexistCount( $parser, $frame ) ) {
|
|
return $else;
|
|
}
|
|
if ( 0 != ( $id = $lc->getGoodLinkID( $pdbk ) ) ) {
|
|
$parser->mOutput->addLink( $title, $id );
|
|
return $then;
|
|
} elseif ( $lc->isBadLink( $pdbk ) ) {
|
|
$parser->mOutput->addLink( $title, 0 );
|
|
return $else;
|
|
}
|
|
$id = $title->getArticleID();
|
|
$parser->mOutput->addLink( $title, $id );
|
|
if ( $id ) {
|
|
return $then;
|
|
}
|
|
}
|
|
}
|
|
return $else;
|
|
}
|
|
|
|
function ifexistObj( &$parser, $frame, $args ) {
|
|
$title = isset( $args[0] ) ? trim( $frame->expand( $args[0] ) ) : '';
|
|
$then = isset( $args[1] ) ? $args[1] : null;
|
|
$else = isset( $args[2] ) ? $args[2] : null;
|
|
|
|
$result = $this->ifexistCommon( $parser, $frame, $title, $then, $else );
|
|
if ( $result === null ) {
|
|
return '';
|
|
} else {
|
|
return trim( $frame->expand( $result ) );
|
|
}
|
|
}
|
|
|
|
function time( &$parser, $format = '', $date = '', $local = false ) {
|
|
global $wgContLang, $wgLocaltimezone;
|
|
if ( isset( $this->mTimeCache[$format][$date][$local] ) ) {
|
|
return $this->mTimeCache[$format][$date][$local];
|
|
}
|
|
|
|
#compute the timestamp string $ts
|
|
#PHP >= 5.2 can handle dates before 1970 or after 2038 using the DateTime object
|
|
#PHP < 5.2 is limited to dates between 1970 and 2038
|
|
|
|
$invalidTime = false;
|
|
|
|
if ( class_exists( 'DateTime' ) ) { #PHP >= 5.2
|
|
# the DateTime constructor must be used because it throws exceptions
|
|
# when errors occur, whereas date_create appears to just output a warning
|
|
# that can't really be detected from within the code
|
|
try {
|
|
# Determine timezone
|
|
if ( $local ) {
|
|
# convert to MediaWiki local timezone if set
|
|
if ( isset( $wgLocaltimezone ) ) {
|
|
$tz = new DateTimeZone( $wgLocaltimezone );
|
|
} else {
|
|
$tz = new DateTimeZone( date_default_timezone_get() );
|
|
}
|
|
} else {
|
|
# if local time was not requested, convert to UTC
|
|
$tz = new DateTimeZone( 'UTC' );
|
|
}
|
|
|
|
# Parse date
|
|
if ( $date !== '' ) {
|
|
$dateObject = new DateTime( $date, $tz );
|
|
} else {
|
|
# use current date and time
|
|
$dateObject = new DateTime( 'now', $tz );
|
|
}
|
|
|
|
# Generate timestamp
|
|
$ts = $dateObject->format( 'YmdHis' );
|
|
} catch (Exception $ex) {
|
|
$invalidTime = true;
|
|
}
|
|
} else { #PHP < 5.2
|
|
if ( $date !== '' ) {
|
|
$unix = @strtotime( $date );
|
|
} else {
|
|
$unix = time();
|
|
}
|
|
|
|
if ( $unix == -1 || $unix == false ) {
|
|
$invalidTime = true;
|
|
} else {
|
|
if ( $local ) {
|
|
# Use the time zone
|
|
if ( isset( $wgLocaltimezone ) ) {
|
|
$oldtz = getenv( 'TZ' );
|
|
putenv( 'TZ='.$wgLocaltimezone );
|
|
}
|
|
wfSuppressWarnings(); // E_STRICT system time bitching
|
|
$ts = date( 'YmdHis', $unix );
|
|
wfRestoreWarnings();
|
|
if ( isset( $wgLocaltimezone ) ) {
|
|
putenv( 'TZ='.$oldtz );
|
|
}
|
|
} else {
|
|
$ts = wfTimestamp( TS_MW, $unix );
|
|
}
|
|
}
|
|
}
|
|
|
|
#format the timestamp and return the result
|
|
if ( $invalidTime ) {
|
|
wfLoadExtensionMessages( 'ParserFunctions' );
|
|
$result = '<strong class="error">' . wfMsgForContent( 'pfunc_time_error' ) . '</strong>';
|
|
} else {
|
|
$this->mTimeChars += strlen( $format );
|
|
if ( $this->mTimeChars > $this->mMaxTimeChars ) {
|
|
wfLoadExtensionMessages( 'ParserFunctions' );
|
|
return '<strong class="error">' . wfMsgForContent( 'pfunc_time_too_long' ) . '</strong>';
|
|
} else {
|
|
|
|
if ( method_exists( $wgContLang, 'sprintfDate' ) ) {
|
|
$result = $wgContLang->sprintfDate( $format, $ts );
|
|
} else {
|
|
if ( !class_exists( 'SprintfDateCompat' ) ) {
|
|
require( dirname( __FILE__ ) . '/SprintfDateCompat.php' );
|
|
}
|
|
|
|
$result = SprintfDateCompat::sprintfDate( $format, $ts );
|
|
}
|
|
}
|
|
}
|
|
$this->mTimeCache[$format][$date][$local] = $result;
|
|
return $result;
|
|
}
|
|
|
|
function localTime( &$parser, $format = '', $date = '' ) {
|
|
return $this->time( $parser, $format, $date, true );
|
|
}
|
|
|
|
/**
|
|
* Obtain a specified number of slash-separated parts of a title,
|
|
* e.g. {{#titleparts:Hello/World|1}} => "Hello"
|
|
*
|
|
* @param Parser $parser Parent parser
|
|
* @param string $title Title to split
|
|
* @param int $parts Number of parts to keep
|
|
* @param int $offset Offset starting at 1
|
|
* @return string
|
|
*/
|
|
public function titleparts( $parser, $title = '', $parts = 0, $offset = 0) {
|
|
$parts = intval( $parts );
|
|
$offset = intval( $offset );
|
|
$ntitle = Title::newFromText( $title );
|
|
if ( $ntitle instanceof Title ) {
|
|
$bits = explode( '/', $ntitle->getPrefixedText(), 25 );
|
|
if ( count( $bits ) <= 0 ) {
|
|
return $ntitle->getPrefixedText();
|
|
} else {
|
|
if ( $offset > 0 ) {
|
|
--$offset;
|
|
}
|
|
if ( $parts == 0 ) {
|
|
return implode( '/', array_slice( $bits, $offset ) );
|
|
} else {
|
|
return implode( '/', array_slice( $bits, $offset, $parts ) );
|
|
}
|
|
}
|
|
} else {
|
|
return $title;
|
|
}
|
|
}
|
|
|
|
// Verifies parameter is less than max string length.
|
|
private function checkLength( $text ) {
|
|
global $wgPFStringLengthLimit;
|
|
return ( mb_strlen( $text ) < $wgPFStringLengthLimit );
|
|
}
|
|
|
|
// Generates error message. Called when string is too long.
|
|
private function tooLongError() {
|
|
global $wgPFStringLengthLimit, $wgContLang;
|
|
wfLoadExtensionMessages( 'ParserFunctions' );
|
|
|
|
return '<strong class="error">' .
|
|
wfMsgExt( 'pfunc_string_too_long',
|
|
array( 'escape', 'parsemag', 'content' ),
|
|
$wgContLang->formatNum( $wgPFStringLengthLimit ) ) .
|
|
'</strong>';
|
|
}
|
|
|
|
/**
|
|
* {{#len:string}}
|
|
*
|
|
* Reports number of characters in string.
|
|
*/
|
|
function runLen ( &$parser, $inStr = '' ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$len = mb_strlen( $inStr );
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $len;
|
|
}
|
|
|
|
/**
|
|
* {{#pos: string | needle | offset}}
|
|
*
|
|
* Finds first occurrence of "needle" in "string" starting at "offset".
|
|
*
|
|
* Note: If the needle is an empty string, single space is used instead.
|
|
* Note: If the needle is not found, empty string is returned.
|
|
*/
|
|
function runPos ( &$parser, $inStr = '', $inNeedle = '', $inOffset = 0 ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$inNeedle = $this->killMarkers( $parser, (string)$inNeedle );
|
|
|
|
if( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inNeedle ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
if( $inNeedle == '' ) { $inNeedle = ' '; }
|
|
|
|
$pos = mb_strpos( $inStr, $inNeedle, $inOffset );
|
|
if( $pos === false ) { $pos = ""; }
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $pos;
|
|
}
|
|
|
|
/**
|
|
* {{#rpos: string | needle}}
|
|
*
|
|
* Finds last occurrence of "needle" in "string".
|
|
*
|
|
* Note: If the needle is an empty string, single space is used instead.
|
|
* Note: If the needle is not found, -1 is returned.
|
|
*/
|
|
function runRPos ( &$parser, $inStr = '', $inNeedle = '' ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$inNeedle = $this->killMarkers( $parser, (string)$inNeedle );
|
|
|
|
if( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inNeedle ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
if( $inNeedle == '' ) { $inNeedle = ' '; }
|
|
|
|
$pos = mb_strrpos( $inStr, $inNeedle );
|
|
if( $pos === false ) { $pos = -1; }
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $pos;
|
|
}
|
|
|
|
/**
|
|
* {{#sub: string | start | length }}
|
|
*
|
|
* Returns substring of "string" starting at "start" and having
|
|
* "length" characters.
|
|
*
|
|
* Note: If length is zero, the rest of the input is returned.
|
|
* Note: A negative value for "start" operates from the end of the
|
|
* "string".
|
|
* Note: A negative value for "length" returns a string reduced in
|
|
* length by that amount.
|
|
*/
|
|
function runSub ( &$parser, $inStr = '', $inStart = 0, $inLength = 0 ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
|
|
if( !$this->checkLength( $inStr ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
if ( intval($inLength) == 0 ) {
|
|
$result = mb_substr( $inStr, $inStart );
|
|
} else {
|
|
$result = mb_substr( $inStr, $inStart, $inLength );
|
|
}
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#count: string | substr }}
|
|
*
|
|
* Returns number of occurrences of "substr" in "string".
|
|
*
|
|
* Note: If "substr" is empty, a single space is used.
|
|
*/
|
|
function runCount ( &$parser, $inStr = '', $inSubStr = '' ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$inSubStr = $this->killMarkers( $parser, (string)$inSubStr );
|
|
|
|
if( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inSubStr ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
if( $inSubStr == '' ) { $inSubStr = ' '; }
|
|
|
|
$result = mb_substr_count( $inStr, $inSubStr );
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $result;
|
|
}
|
|
|
|
/**
|
|
* {{#replace:string | from | to | limit }}
|
|
*
|
|
* Replaces each occurrence of "from" in "string" with "to".
|
|
* At most "limit" replacements are performed.
|
|
*
|
|
* Note: Armored against replacements that would generate huge strings.
|
|
* Note: If "from" is an empty string, single space is used instead.
|
|
*/
|
|
function runReplace( &$parser, $inStr = '',
|
|
$inReplaceFrom = '', $inReplaceTo = '', $inLimit = -1 ) {
|
|
global $wgPFStringLengthLimit;
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$inReplaceFrom = $this->killMarkers( $parser, (string)$inReplaceFrom );
|
|
$inReplaceTo = $this->killMarkers( $parser, (string)$inReplaceTo );
|
|
|
|
if( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inReplaceFrom ) ||
|
|
!$this->checkLength( $inReplaceTo ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
if( $inReplaceFrom == '' ) { $inReplaceFrom = ' '; }
|
|
|
|
// Precompute limit to avoid generating enormous string:
|
|
$diff = mb_strlen( $inReplaceTo ) - mb_strlen( $inReplaceFrom );
|
|
if( $diff > 0 ) {
|
|
$limit = ( ( $wgPFStringLengthLimit - mb_strlen( $inStr ) ) / $diff ) + 1;
|
|
} else {
|
|
$limit = -1;
|
|
}
|
|
|
|
$inLimit = intval($inLimit);
|
|
if( $inLimit >= 0 ) {
|
|
if( $limit > $inLimit || $limit == -1 ) { $limit = $inLimit; }
|
|
}
|
|
|
|
// Use regex to allow limit and handle UTF-8 correctly.
|
|
$inReplaceFrom = preg_quote( $inReplaceFrom, '/' );
|
|
$inReplaceTo = StringUtils::escapeRegexReplacement( $inReplaceTo );
|
|
|
|
$result = preg_replace( '/' . $inReplaceFrom . '/u',
|
|
$inReplaceTo, $inStr, $limit);
|
|
|
|
if( !$this->checkLength( $result ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $result;
|
|
}
|
|
|
|
|
|
/**
|
|
* {{#explode:string | delimiter | position}}
|
|
*
|
|
* Breaks "string" into chunks separated by "delimiter" and returns the
|
|
* chunk identified by "position".
|
|
*
|
|
* Note: Negative position can be used to specify tokens from the end.
|
|
* Note: If the divider is an empty string, single space is used instead.
|
|
* Note: Empty string is returned if there are not enough exploded chunks.
|
|
*/
|
|
function runExplode ( &$parser, $inStr = '', $inDiv = '', $inPos = 0 ) {
|
|
wfProfileIn( __METHOD__ );
|
|
|
|
$inStr = $this->killMarkers( $parser, (string)$inStr );
|
|
$inDiv = $this->killMarkers( $parser, (string)$inDiv );
|
|
|
|
if( $inDiv == '' ) { $inDiv = ' '; }
|
|
|
|
if( !$this->checkLength( $inStr ) ||
|
|
!$this->checkLength( $inDiv ) ) {
|
|
wfProfileOut( __METHOD__ );
|
|
return $this->tooLongError();
|
|
}
|
|
|
|
$inDiv = preg_quote( $inDiv, '/' );
|
|
|
|
$matches = preg_split( '/'.$inDiv.'/u', $inStr );
|
|
|
|
if( $inPos >= 0 && isset( $matches[$inPos] ) ) {
|
|
$result = $matches[$inPos];
|
|
} elseif ( $inPos < 0 && isset( $matches[count($matches) + $inPos] ) ) {
|
|
$result = $matches[count($matches) + $inPos];
|
|
} else {
|
|
$result = '';
|
|
}
|
|
|
|
wfProfileOut( __METHOD__ );
|
|
return $result;
|
|
}
|
|
}
|