/**
* Sets the meta description in the database to be part of the intro, part
* of the first step, or 'original' which is something like "wikiHow
* article on How to <title>".
*/
private function buildDescription($style)
{
if (self::DESC_STYLE_ORIGINAL == $style) {
return array(true, '');
}
if (self::DESC_STYLE_EDITED == $style) {
return array(true, $this->row['ami_desc']);
}
$wikitext = $this->getArticleWikiText();
if (!$wikitext) {
return array(false, '');
}
if (self::DESC_STYLE_INTRO == $style || self::DESC_STYLE_INTRO_NO_TITLE == $style) {
// grab intro
$desc = Wikitext::getIntro($wikitext);
// append first step to intro if intro maybe isn't long enough
if (strlen($desc) < 2 * self::MAX_DESC_LENGTH) {
list($steps, ) = Wikitext::getStepsSection($wikitext);
if ($steps) {
$desc .= ' ' . Wikitext::cutFirstStep($steps);
}
}
} elseif (self::DESC_STYLE_STEP1 == $style) {
// grab steps section
list($desc, ) = Wikitext::getStepsSection($wikitext);
// pull out just the first step
if ($desc) {
$desc = Wikitext::cutFirstStep($desc);
} else {
$desc = Wikitext::getIntro($wikitext);
}
} else {
//throw new Exception('ArticleMetaInfo: unknown style');
return array(false, '');
}
$desc = Wikitext::flatten($desc);
$howto = wfMsg('howto', $this->titleText);
if ($desc) {
if (self::DESC_STYLE_INTRO_NO_TITLE != $style) {
$desc = $howto . '. ' . $desc;
}
} else {
$desc = $howto;
}
$desc = self::trimDescription($desc);
return array(true, $desc);
}