<?php

    /**
    * Smarty Internal Plugin Compile Block
    *
    * Compiles the {block}{/block} tags
    *
    * @package Smarty
    * @subpackage Compiler
    * @author Uwe Tews
    */

    /**
    * Smarty Internal Plugin Compile Block Class
    *
    * @package Smarty
    * @subpackage Compiler
    */
    class Smarty_Internal_Compile_Block extends Smarty_Internal_CompileBase
    {
        /**
        * Attribute definition: Overwrites base class.
        *
        * @var array
        * @see Smarty_Internal_CompileBase
        */
        public $required_attributes = array('name');

        /**
        * Attribute definition: Overwrites base class.
        *
        * @var array
        * @see Smarty_Internal_CompileBase
        */
        public $shorttag_order = array('name', 'hide');

        /**
        * Attribute definition: Overwrites base class.
        *
        * @var array
        * @see Smarty_Internal_CompileBase
        */
        public $optional_attributes = array('hide');

        /**
        * Compiles code for the {block} tag
        *
        * @param array  $args     array with attributes from parser
        * @param object $compiler compiler object
        * @return boolean true
        */
        public function compile($args, $compiler)
        {
            // check and get attributes
            $_attr = $this->getAttributes($compiler, $args);
            $save = array($_attr, $compiler->parser->current_buffer, $compiler->nocache, $compiler->smarty->merge_compiled_includes, $compiler->merged_templates, $compiler->smarty->merged_templates_func, $compiler->template->properties, $compiler->template->has_nocache_code);
            $this->openTag($compiler, 'block', $save);
            if ($_attr['nocache'] == true) {
                $compiler->nocache = true;
            }
            // set flag for {block} tag
            $compiler->inheritance = true;
            // must merge includes
            $compiler->smarty->merge_compiled_includes = true;

            $compiler->parser->current_buffer = new _smarty_template_buffer($compiler->parser);
            $compiler->has_code = false;

            return true;
        }

        /**
        * Save or replace child block source by block name during parsing
        *
        * @param string $block_content     block source content
        * @param string $block_tag         opening block tag
        * @param object $template          template object
        * @param string $filepath          filepath of template source
        */
        static function saveBlockData($block_content, $block_tag, $template, $filepath)
        {
            $nesting = array();
            $hide_level = 0;
            $child_flag = false;
            $_rdl = preg_quote($template->smarty->right_delimiter);
            $_ldl = preg_quote($template->smarty->left_delimiter);
            if (!$template->smarty->auto_literal) {
                $al = '\s*';
            } else {
                $al = '';
            }
            if (0 == preg_match("!({$_ldl}{$al}block\s+)(name=)?(\w+|'.*'|\".*\")(\s*?)?((append|prepend|nocache)?(\s*)?(hide)?)?(\s*{$_rdl})!", $block_tag, $_match)) {
                $error_text = 'Syntax Error in template "' . $template->source->filepath . '"   "' . $block_tag . '" illegal options';
                throw new SmartyCompilerException($error_text);
            } else {
                $_name = trim($_match[3], '\'"');
                // replace {$smarty.block.child}
                // get nested block tags
                preg_match_all("%({$_ldl}{$al}block\s+)(name=)?(\w+|'.*?'|\".*?\")([\s\S]*?)(hide)?(\s*{$_rdl})|({$_ldl}{$al}/block\s*{$_rdl})|({$_ldl}{$al}\\\$smarty\.block\.child\s*{$_rdl})|({$_ldl}|{$_rdl})|([\s\S]*?(?=({$_ldl}|{$_rdl})))%", $block_tag.$block_content."{$template->smarty->left_delimiter}/block{$template->smarty->right_delimiter}", $_match2);
                $block_content = '';
                foreach ($_match2[0] as $key => $text) {
                    // {block} tag
                    if (!empty($_match2[3][$key])) {
                        $name = trim($_match2[3][$key], '\'"');
                        array_push($nesting, array($name, $block_content, $child_flag));
                        $block_content = '';
                        // hide option
                        if (!empty($_match2[5][$key]) && $hide_level == 0 && !isset($template->block_data[$name])) {
                            $hide_level = count($nesting);
                        }
                        continue;
                    }
                    // {/block} tag
                    if (!empty($_match2[7][$key])) {
                        list($name, $content, $cf) = array_pop($nesting);
                        if (isset($template->block_data[$name]) && !$child_flag) {
                            if ($template->block_data[$name]['mode'] == 'prepend') {
                                $block_content =  $content . $template->block_data[$name]['source'] . $block_content;
                            } elseif ($template->block_data[$name]['mode'] == 'append') {
                                $block_content =  $content . $block_content . $template->block_data[$name]['source'];
                            } else {
                                // check if {$smarty.block.parent} will be later replaced
                                if (strpos($template->block_data[$name]['source'], '%%%%SMARTY_PARENT%%%%') === false) {
                                    $block_content =  $content . $template->block_data[$name]['source'];
                                }
                            }
                        } else {
                            $block_content =  $content . $block_content;
                            $cf = true;
                        }
                        $child_flag = $cf;
                        if (count($nesting) < $hide_level) {
                            $hide_level = 0;
                        }
                        continue;
                    }
                    // hide option active
                    if ($hide_level && $hide_level <= count($nesting)) {
                        continue;
                    }
                    // {$smarty.block.child} tag
                    if (!empty($_match2[8][$key])) {
                        list($name, $content, $cf) = end($nesting);
                        if (isset($template->block_data[$name])) {
                            $child_flag = true;
                            $block_content .= $template->block_data[$name]['source'];
                        }
                        continue;
                    }
                    $block_content .=  $_match2[0][$key];

                }
                //                $block_content = preg_replace_callback("%({$_ldl}{$al}block\s+)(name=)?(\w+|'.*?'|\".*?\")([\s\S]*?)(hide)?(\s*{$_rdl})|({$_ldl}{$al}/block\s*{$_rdl})|({$_ldl}{$al}\\\$smarty\.block\.child\s*{$_rdl})|({$_ldl}|{$_rdl})|([\s\S]*?(?=({$_ldl}|{$_rdl})))%", array('Smarty_Internal_Compile_Block', 'replaceBlockChild'), $block_tag.$block_content."{$template->smarty->left_delimiter}/block{$template->smarty->right_delimiter}");
                if (isset($template->block_data[$_name])) {
                    if (strpos($template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
                        $template->block_data[$_name]['source'] =
                        str_replace('%%%%SMARTY_PARENT%%%%', $block_content, $template->block_data[$_name]['source']);
                    } elseif ($template->block_data[$_name]['mode'] == 'prepend') {
                        $template->block_data[$_name]['source'] .= $block_content;
                    } elseif ($template->block_data[$_name]['mode'] == 'append') {
                        $template->block_data[$_name]['source'] = $block_content . $template->block_data[$_name]['source'];
                    }
                } else {
                    $template->block_data[$_name]['source'] = $block_content;
                    $template->block_data[$_name]['file'] = $filepath;
                }
                if ($child_flag) {
                    $template->block_data[$_name]['source'] = $block_content;
                    $template->block_data[$_name]['file'] = $filepath;
                }
                if ($_match[6] == 'append') {
                    $template->block_data[$_name]['mode'] = 'append';
                } elseif ($_match[6] == 'prepend') {
                    $template->block_data[$_name]['mode'] = 'prepend';
                } else {
                    $template->block_data[$_name]['mode'] = 'replace';
                }
            }
        }

        /**
        * Compile saved child block source
        *
        * @param object $compiler  compiler object
        * @param string $_name     optional name of child block
        * @return string   compiled code of schild block
        */
        static function compileChildBlock($compiler, $_name = null)
        {
            $_output = '';
            // if called by {$smarty.block.child} we must search the name of enclosing {block}
            if ($_name == null) {
                $stack_count = count($compiler->_tag_stack);
                while (--$stack_count >= 0) {
                    if ($compiler->_tag_stack[$stack_count][0] == 'block') {
                        $_name = trim($compiler->_tag_stack[$stack_count][1][0]['name'], "'\"");
                        break;
                    }
                }
                // flag that child is already compile by {$smarty.block.child} inclusion
                $compiler->template->block_data[$_name]['compiled'] = true;
            }
            if ($_name == null) {
                $compiler->trigger_template_error('{$smarty.block.child} used out of context', $compiler->lex->taglineno);
            }
            // undefined child?
            if (!isset($compiler->template->block_data[$_name]['source'])) {
                return '';
            }
            $_tpl = new Smarty_Internal_template('string:' . $compiler->template->block_data[$_name]['source'], $compiler->smarty, $compiler->template, $compiler->template->cache_id,
                $compiler->template->compile_id, $compiler->template->caching, $compiler->template->cache_lifetime);
            $_tpl->variable_filters = $compiler->template->variable_filters;
            $_tpl->properties['nocache_hash'] = $compiler->template->properties['nocache_hash'];
            $_tpl->source->filepath = $compiler->template->block_data[$_name]['file'];
            $_tpl->allow_relative_path = true;
            if ($compiler->nocache) {
                $_tpl->compiler->forceNocache = 2;
            } else {
                $_tpl->compiler->forceNocache = 1;
            }
            $_tpl->compiler->suppressHeader = true;
            $_tpl->compiler->suppressFilter = true;
            $_tpl->compiler->suppressTemplatePropertyHeader = true;
            $_tpl->compiler->suppressMergedTemplates = true;
            if (strpos($compiler->template->block_data[$_name]['source'], '%%%%SMARTY_PARENT%%%%') !== false) {
                $_output = str_replace('%%%%SMARTY_PARENT%%%%', $compiler->parser->current_buffer->to_smarty_php(), $_tpl->compiler->compileTemplate($_tpl));
            } elseif ($compiler->template->block_data[$_name]['mode'] == 'prepend') {
                $_output = $_tpl->compiler->compileTemplate($_tpl) . $compiler->parser->current_buffer->to_smarty_php();
            } elseif ($compiler->template->block_data[$_name]['mode'] == 'append') {
                $_output = $compiler->parser->current_buffer->to_smarty_php() . $_tpl->compiler->compileTemplate($_tpl);
            } elseif (!empty($compiler->template->block_data[$_name])) {
                $_output = $_tpl->compiler->compileTemplate($_tpl);
            }
            $compiler->template->properties['file_dependency'] = array_merge($compiler->template->properties['file_dependency'], $_tpl->properties['file_dependency']);
            $compiler->template->properties['function'] = array_merge($compiler->template->properties['function'], $_tpl->properties['function']);
            $compiler->merged_templates = array_merge($compiler->merged_templates, $_tpl->compiler->merged_templates);
            $compiler->template->variable_filters = $_tpl->variable_filters;
            if ($_tpl->has_nocache_code) {
                $compiler->template->has_nocache_code = true;
            }
            foreach ($_tpl->required_plugins as $key => $tmp1) {
                if ($compiler->nocache && $compiler->template->caching) {
                    $code = 'nocache';
                } else {
                    $code = $key;
                }
                foreach ($tmp1 as $name => $tmp) {
                    foreach ($tmp as $type => $data) {
                        $compiler->template->required_plugins[$code][$name][$type] = $data;
                    }
                }
            }
            unset($_tpl);

            return $_output;
        }

    }

    /**
    * Smarty Internal Plugin Compile BlockClose Class
    *
    * @package Smarty
    * @subpackage Compiler
    */
    class Smarty_Internal_Compile_Blockclose extends Smarty_Internal_CompileBase
    {
        /**
        * Compiles code for the {/block} tag
        *
        * @param array  $args     array with attributes from parser
        * @param object $compiler compiler object
        * @return string compiled code
        */
        public function compile($args, $compiler)
        {
            $compiler->has_code = true;
            // check and get attributes
            $_attr = $this->getAttributes($compiler, $args);
            $saved_data = $this->closeTag($compiler, array('block'));
            $_name = trim($saved_data[0]['name'], "\"'");
            if (isset($compiler->template->block_data[$_name]) && !isset($compiler->template->block_data[$_name]['compiled'])) {
                // restore to status before {block} tag as new subtemplate code of parent {block} is not needed
                // TODO: Below code was disabled in 3.1.8 because of problems with {include} in nested {block} tags in child templates
                //       combined with append/prepend or $smarty.block.parent
                //       For later versions it should be checked under which conditions it could run for optimisation
                //
                //$compiler->merged_templates = $saved_data[4];
                //$compiler->smarty->merged_templates_func = $saved_data[5];
                //$compiler->template->properties = $saved_data[6];
                //$compiler->template->has_nocache_code = $saved_data[7];
                $_output = Smarty_Internal_Compile_Block::compileChildBlock($compiler, $_name);
            } else {
                if (isset($saved_data[0]['hide']) && !isset($compiler->template->block_data[$_name]['source'])) {
                    $_output = '';
                } else {
                    $_output = $compiler->parser->current_buffer->to_smarty_php();
                }
                unset($compiler->template->block_data[$_name]['compiled']);
            }
            // reset flags
            $compiler->parser->current_buffer = $saved_data[1];
            $compiler->nocache = $saved_data[2];
            $compiler->smarty->merge_compiled_includes = $saved_data[3];
            // reset flag for {block} tag
            $compiler->inheritance = false;
            // $_output content has already nocache code processed
            $compiler->suppressNocacheProcessing = true;

            return $_output;
        }

    }