/**
* Generates a target name from the given target name formula
*
* This parses the formula and replaces <unique number> tags
*
* @param type $targetNameFormula
*
* @throws MWException
* @return type
*/
protected function generateTargetName($targetNameFormula)
{
$targetName = $targetNameFormula;
// prepend a super-page, if one was specified
if ($this->getRequest()->getCheck('super_page')) {
$targetName = $this->getRequest()->getVal('super_page') . '/' . $targetName;
}
// prepend a namespace, if one was specified
if ($this->getRequest()->getCheck('namespace')) {
$targetName = $this->getRequest()->getVal('namespace') . ':' . $targetName;
}
// replace "unique number" tag with one that won't get erased by the next line
$targetName = preg_replace('/<unique number(.*)>/', '{num\\1}', $targetName, 1);
// if any formula stuff is still in the name after the parsing, just remove it
// FIXME: This is wrong. If anything is still left, something should have been present in the form and wasn't. An error should be raised.
//$targetName = StringUtils::delimiterReplace( '<', '>', '', $targetName );
// replace spaces back with underlines, in case a magic word or parser
// function name contains underlines - hopefully this won't cause
// problems of its own
$targetName = str_replace(' ', '_', $targetName);
// now run the parser on it
global $wgParser;
$targetName = $wgParser->transformMsg($targetName, ParserOptions::newFromUser(null));
$titleNumber = '';
$isRandom = false;
$randomNumHasPadding = false;
$randomNumDigits = 6;
if (preg_match('/{num.*}/', $targetName, $matches) && strpos($targetName, '{num') !== false) {
// Random number
if (preg_match('/{num;random(;(0)?([1-9][0-9]*))?}/', $targetName, $matches)) {
$isRandom = true;
$randomNumHasPadding = array_key_exists(2, $matches);
$randomNumDigits = array_key_exists(3, $matches) ? $matches[3] : $randomNumDigits;
$titleNumber = SFUtils::makeRandomNumber($randomNumDigits, $randomNumHasPadding);
} else {
if (preg_match('/{num.*start[_]*=[_]*([^;]*).*}/', $targetName, $matches)) {
// get unique number start value
// from target name; if it's not
// there, or it's not a positive
// number, start it out as blank
if (count($matches) == 2 && is_numeric($matches[1]) && $matches[1] >= 0) {
// the "start" value"
$titleNumber = $matches[1];
}
} else {
if (preg_match('/^(_?{num.*}?)*$/', $targetName, $matches)) {
// the target name contains only underscores and number fields,
// i.e. would result in an empty title without the number set
$titleNumber = '1';
} else {
$titleNumber = '';
}
}
}
// set target title
$targetTitle = Title::newFromText(preg_replace('/{num.*}/', $titleNumber, $targetName));
// if the specified target title is invalid, give up
if (!$targetTitle instanceof Title) {
throw new MWException(wfMessage('sf_autoedit_invalidtargetspecified', trim(preg_replace('/<unique number(.*)>/', $titleNumber, $targetNameFormula)))->parse());
}
// If title exists already, cycle through numbers for
// this tag until we find one that gives a nonexistent
// page title.
// We cannot use $targetTitle->exists(); it does not use
// Title::GAID_FOR_UPDATE, which is needed to get
// correct data from cache; use
// $targetTitle->getArticleID() instead.
$numAttemptsAtTitle = 0;
while ($targetTitle->getArticleID(Title::GAID_FOR_UPDATE) !== 0) {
$numAttemptsAtTitle++;
if ($isRandom) {
// If the set of pages is "crowded"
// already, go one digit higher.
if ($numAttemptsAtTitle > 20) {
$randomNumDigits++;
}
$titleNumber = SFUtils::makeRandomNumber($randomNumDigits, $randomNumHasPadding);
} elseif ($titleNumber == "") {
$titleNumber = 2;
} else {
$titleNumber = str_pad($titleNumber + 1, strlen($titleNumber), '0', STR_PAD_LEFT);
}
$targetTitle = Title::newFromText(preg_replace('/{num.*}/', $titleNumber, $targetName));
}
$targetName = $targetTitle->getPrefixedText();
}
return $targetName;
}
