*/
class SyntaxExtension extends \Twig_Extension
{
public function getFilters()
{
return array(
'format_sql' => new \Twig_Filter_Method($this, 'formatSQL', array('is_safe' => array('html'))),
);
}
public function getName()
{
return 'propel_syntax_extension';
}
public function formatSQL($sql)
{
// list of keywords to prepend a newline in output
$newlines = array(
'FROM',
'(((FULL|LEFT|RIGHT)? ?(OUTER|INNER)?|CROSS|NATURAL)? JOIN)',
'VALUES',
'WHERE',
'ORDER BY',
'GROUP BY',
'HAVING',
'LIMIT',
);
// list of keywords to highlight
$keywords = array_merge($newlines, array(
// base
'SELECT', 'UPDATE', 'DELETE', 'INSERT', 'REPLACE',
'SET',
'INTO',
'AS',
'DISTINCT',
// most used methods
'COUNT',
'AVG',
'MIN',
'MAX',
// joins
'ON', 'USING',
// where clause
'(IS (NOT)?)?NULL',
'(NOT )?IN',
'(NOT )?I?LIKE',
'AND', 'OR', 'XOR',
'BETWEEN',
// order, group, limit ..
'ASC',
'DESC',
'OFFSET',
));
$sql = preg_replace(array(
'/\b('.implode('|', $newlines).')\b/',
'/\b('.implode('|', $keywords).')\b/',
'/(\/\*.*\*\/)/',
'/(`[^`.]*`)/',
'/(([0-9a-zA-Z$_]+)\.([0-9a-zA-Z$_]+))/',
), array(
'
\\1',
'\\1',
'',
'\\1',
'\\1',
), $sql);
return $sql;
}
}