gistfile1.aw

<?php

	class lib_coredata_predicate extends lib_coredata_properties
	{

		/**
		 * 
		 */
		const LIB_COREDATA_FILLER_ATTRIBUTE = '%@';

		/**
		 * @var lib_coredata_entity $entity
		 */
		public $entity = null;

		/**
		 * @var string $format
		 */
		public $format = null;

		/**
		 * @var string $predicate_format
		 */
		public $predicate_format = null;

		/**
		 * @var bool $error
		 */
		public $error = false;

		/**
		 * @var array() $vars
		 */
		private $vars = array();

		/**
		 * @var array
		 */
		public $requested_fields = array();

		/**
		 * @var null|lib_coredata_entity
		 */
		public $child_entity = NULL;

		/**
		 * @var bool
		 */
		public $debug = FALSE;


		/**
		 *
		 */
		public function __construct()
		{
			$args = ( is_array( func_get_arg( 0 ) ) ? func_get_arg( 0 ) : func_get_args() );
			$format = $args[0];
			$args = array_slice( $args, 1, sizeof( $args ) - 1 );
			$original_args = $args;
			$i = 0;
			for( $pos = 0; preg_match( '#(?<!\\\)(\%(\w|\@))#siU', $format, $match, PREG_OFFSET_CAPTURE, $pos ); )
			{
				$type = $match[2][0];
				$args[$i] = mysql_real_escape_string( $args[$i] );
				$format_type = 'string';
				if( ! preg_match( '#(b|c|d|e|E|u|f|F|o)#', $type ) )
				{
					if( preg_match( '#^([0-9]+)$#', $type, $matches ) )
					{
						if( is_numeric( $original_args[$type] ) )
						{
							$args[$i] = $original_args[$type];
						} else if( preg_match( '#([\'\'\"\"])#', $original_args[$type] ) ) {
							$args[$i] = $original_args[$type];
						} else {
							$args[$i] = "'".$original_args[$type]."'";
						}
					} else {
						$args[$i] = "'".$original_args[$i]."'";
					}
				} else {
					$format_type = 'int';
				}
				$arg_pos = $match[0][1];
				$arg_len = strlen( $match[0][0] );
				$this->vars[] = $args[$i];
				$temp_e = self::LIB_COREDATA_FILLER_ATTRIBUTE;
				$format = substr_replace( $format, $temp_e, $arg_pos, $arg_len );
				$pos = $arg_pos + strlen( $temp_e );
				$i++;
			}
			$this->set_format( preg_replace( '#\\\%#i', '%', $format ) );
		}

		/**
		 * @param lib_coredata_entity $entity
		 * @param bool $flag
		 * @return lib_coredata_predicate
		 */
		public function set_entity( lib_coredata_entity $entity, $flag = TRUE )
		{
			$this->entity = $entity;
			if( $flag )
			{
				$this->parse();
			}
			return $this;
		}

		/**
		 * @param lib_coredata_entity $entity
		 * @return lib_coredata_predicate
		 */
		public function set_child_entity( lib_coredata_entity $entity )
		{
			$this->child_entity = $entity;
			return $this;
		}

		/**
		 * @return lib_coredata_entity|null
		 */
		public function entity()
		{
			return $this->entity;
		}

		/**
		 * @param string $format
		 * @return void
		 */

		private function set_format( $format )
		{
			$this->format = $format;
		}

		/**
		 * @return null|string
		 */

		private function format()
		{
			return $this->format;
		}

		/**
		 * @param string $format
		 * @return void
		 */

		private function set_predicate_format( $format )
		{
			$this->predicate_format = $format;
		}

		/**
		 * @return null|string
		 */

		public function predicate_format()
		{
			return $this->predicate_format;
		}

		/**
		 * @param bool $flag
		 * @return void
		 */

		public function set_error( $flag )
		{
			$this->error = $flag;
		}

		/**
		 * @return bool
		 */

		public function error()
		{
			return $this->error;
		}

		/**
		 * @return void
		 */

		public function parse()
		{
			$this->set_error( false );
			if( ! $this->entity() )
			{
				$this->set_predicate_format( NULL );
				return;
			}
			$exp = $this->format();
			$length = strlen( $exp );
			$in_quote = FALSE;
			$mut_string = NULL;
			for( $i = 0; $i < $length; $i++  )
			{
				$char = $exp[$i];
				$replace = NULL;
				if( preg_match( '#[\'|\"]#', $char ) )
				{
					$in_quote = ( $in_quote ? FALSE : TRUE );
				}
				if( $in_quote )
				{
					continue;
				}
				$last = FALSE;
				if( preg_match( '#[^a-z0-9_\.]#', $char ) || ( ( $last = ( $i == ( $length - 1 ) ) ) && preg_match( '#[a-z0-9]+#', $mut_string ) ) )
				{
					if( $last )
					{
						$i++;
						$mut_string .= $char;
					}
					$field = $mut_string;
					if( ! $this->child_entity )
					{
						if( ( $str = $this->entity()->create_key( $field ) ) != NULL && $this->entity()->has_key( $str ) )
						{
							$replace = '`'.$str.'`';
						}
					} else {
						if( substr( $field, 0, 4 ) == 'self' )
						{
							$tfield = substr( $field, 5, strlen( $field ) - 5 );
							if( ( $str = $this->entity()->create_key( $tfield ) ) != NULL && $this->entity()->has_key( $str ) )
							{
								$replace = $this->entity()->name().'.'.'`'.$str.'`';
							}
						} else {
							if( ( $str = $this->child_entity->create_key( $field ) ) != NULL && $this->child_entity->has_key( $str ) )
							{
								$replace = $this->child_entity->name().'.'.'`'.$str.'`';
							}
						}
					}
					if( $replace != NULL )
					{
						$exp = substr_replace( $exp, $replace, ( $i - strlen( $field ) ), strlen( $field ) );
						$dif = ( strlen( $replace ) - strlen( $field ) );
						$length += $dif;
						$i += $dif;
					}
					$mut_string = NULL;
				} else {
					$mut_string .= $char;
				}
			}
			$counter = 0;
			for( $pos = 0; preg_match( '#'.self::LIB_COREDATA_FILLER_ATTRIBUTE.'#', $exp, $match, PREG_OFFSET_CAPTURE, $pos ); $counter++ )
			{
				$arg_len = strlen( $match[0][0] );
				$replace = $this->vars[$counter];
				$exp = substr_replace( $exp, $replace, $match[0][1], $arg_len );
				$pos += $arg_len + strlen( $replace );
			}
			$this->set_predicate_format( $exp );
			if( $this->debug )
			{
				echo $this->predicate_format();
				exit;
			}
		}

	}

?>