system/classes/DatabaseBuilder.php
protected function getClassName($fileName)
    {
        // Get rid of prefix
        $namePiece = @explode($this->config['modelsPrefix'], $fileName);
        $name = isset($namePiece[1]) ? $namePiece[1] : $fileName;
        
        // Get rid of postfix
        $namePiece = @explode($this->config['modelsPostfix'], $name);
        $name = isset($namePiece[1]) ? $namePiece[0] : $name;
        
        // Get rid of .php
        $namePiece = explode('.php', $name);
        $name = isset($namePiece[1]) ? $namePiece[0] : $name;
        
        return $name;
    }
protected function getClassName($fileName)
    {
        // Get rid of prefix
        $namePiece = @explode($this->config['modelsPrefix'], $fileName);
        $name = isset($namePiece[1]) ? $namePiece[1] : $fileName;
        
        // Get rid of postfix
        $namePiece = @explode($this->config['modelsPostfix'], $name);
        $name = isset($namePiece[1]) ? $namePiece[0] : $name;
        
        // Get rid of .php
        $namePiece = explode('.php', $name);
        $name = isset($namePiece[1]) ? $namePiece[0] : $name;
        
        return $name;
    }
Removes prefix, postfix, and .php from class filename.