<?php

/**
 * Smarty Internal Plugin Compile Modifier
 * Compiles code for modifier execution
 *
 * @package    Smarty
 * @subpackage Compiler
 * @author     Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Modifier Class
 *
 * @package    Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Private_Modifier extends Smarty_Internal_CompileBase {
	/**
	 * Compiles code for modifier execution
	 *
	 * @param  array $args array with attributes from parser
	 * @param  object $compiler compiler object
	 * @param  array $parameter array with compilation parameter
	 *
	 * @return string compiled code
	 */
	public function compile( $args, $compiler, $parameter ) {
		// check and get attributes
		$_attr  = $this->getAttributes( $compiler, $args );
		$output = $parameter['value'];
		// loop over list of modifiers
		foreach ( $parameter['modifierlist'] as $single_modifier ) {
			$modifier           = $single_modifier[0];
			$single_modifier[0] = $output;
			$params             = implode( ',', $single_modifier );
			// check if we know already the type of modifier
			if ( isset( $compiler->known_modifier_type[ $modifier ] ) ) {
				$modifier_types = [ $compiler->known_modifier_type[ $modifier ] ];
			} else {
				$modifier_types = [ 1, 2, 3, 4, 5, 6 ];
			}
			foreach ( $modifier_types as $type ) {
				switch ( $type ) {
					case 1:
						// registered modifier
						if ( isset( $compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ] ) ) {
							$function = $compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ][0];
							if ( ! is_array( $function ) ) {
								$output = "{$function}({$params})";
							} else {
								if ( is_object( $function[0] ) ) {
									$output = '$_smarty_tpl->smarty->registered_plugins[Smarty::PLUGIN_MODIFIER][\'' . $modifier . '\'][0][0]->' . $function[1] . '(' . $params . ')';
								} else {
									$output = $function[0] . '::' . $function[1] . '(' . $params . ')';
								}
							}
							$compiler->known_modifier_type[ $modifier ] = $type;
							break 2;
						}
						break;
					case 2:
						// registered modifier compiler
						if ( isset( $compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIERCOMPILER ][ $modifier ][0] ) ) {
							$output                                     = call_user_func( $compiler->smarty->registered_plugins[ Smarty::PLUGIN_MODIFIERCOMPILER ][ $modifier ][0], $single_modifier, $compiler->smarty );
							$compiler->known_modifier_type[ $modifier ] = $type;
							break 2;
						}
						break;
					case 3:
						// modifiercompiler plugin
						if ( $compiler->smarty->loadPlugin( 'smarty_modifiercompiler_' . $modifier ) ) {
							// check if modifier allowed
							if ( ! is_object( $compiler->smarty->security_policy ) || $compiler->smarty->security_policy->isTrustedModifier( $modifier, $compiler ) ) {
								$plugin = 'smarty_modifiercompiler_' . $modifier;
								$output = $plugin( $single_modifier, $compiler );
							}
							$compiler->known_modifier_type[ $modifier ] = $type;
							break 2;
						}
						break;
					case 4:
						// modifier plugin
						if ( $function = $compiler->getPlugin( $modifier, Smarty::PLUGIN_MODIFIER ) ) {
							// check if modifier allowed
							if ( ! is_object( $compiler->smarty->security_policy ) || $compiler->smarty->security_policy->isTrustedModifier( $modifier, $compiler ) ) {
								$output = "{$function}({$params})";
							}
							$compiler->known_modifier_type[ $modifier ] = $type;
							break 2;
						}
						break;
					case 5:
						// PHP function
						if ( is_callable( $modifier ) ) {
							// check if modifier allowed
							if ( ! is_object( $compiler->smarty->security_policy ) || $compiler->smarty->security_policy->isTrustedPhpModifier( $modifier, $compiler ) ) {
								$output = "{$modifier}({$params})";
							}
							$compiler->known_modifier_type[ $modifier ] = $type;
							break 2;
						}
						break;
					case 6:
						// default plugin handler
						if ( isset( $compiler->default_handler_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ] ) || ( is_callable( $compiler->smarty->default_plugin_handler_func ) && $compiler->getPluginFromDefaultHandler( $modifier, Smarty::PLUGIN_MODIFIER ) ) ) {
							$function = $compiler->default_handler_plugins[ Smarty::PLUGIN_MODIFIER ][ $modifier ][0];
							// check if modifier allowed
							if ( ! is_object( $compiler->smarty->security_policy ) || $compiler->smarty->security_policy->isTrustedModifier( $modifier, $compiler ) ) {
								if ( ! is_array( $function ) ) {
									$output = "{$function}({$params})";
								} else {
									if ( is_object( $function[0] ) ) {
										$output = '$_smarty_tpl->smarty->registered_plugins[Smarty::PLUGIN_MODIFIER][\'' . $modifier . '\'][0][0]->' . $function[1] . '(' . $params . ')';
									} else {
										$output = $function[0] . '::' . $function[1] . '(' . $params . ')';
									}
								}
							}
							if ( isset( $compiler->template->required_plugins['nocache'][ $modifier ][ Smarty::PLUGIN_MODIFIER ]['file'] ) || isset( $compiler->template->required_plugins['compiled'][ $modifier ][ Smarty::PLUGIN_MODIFIER ]['file'] ) ) {
								// was a plugin
								$compiler->known_modifier_type[ $modifier ] = 4;
							} else {
								$compiler->known_modifier_type[ $modifier ] = $type;
							}
							break 2;
						}
				}
			}
			if ( ! isset( $compiler->known_modifier_type[ $modifier ] ) ) {
				$compiler->trigger_template_error( "unknown modifier \"" . $modifier . "\"", $compiler->lex->taglineno );
			}
		}
		
		return $output;
	}
}
