<?php
/**
 * Smarty Internal Plugin Compile Include
 * Compiles the {include} tag
 *
 * @package    Smarty
 * @subpackage Compiler
 * @author     Uwe Tews
 */

/**
 * Smarty Internal Plugin Compile Include Class
 *
 * @package    Smarty
 * @subpackage Compiler
 */
class Smarty_Internal_Compile_Include extends Smarty_Internal_CompileBase
{
    /**
     * caching mode to create nocache code but no cache file
     */
    const CACHING_NOCACHE_CODE = 9999;

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

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

    /**
     * Attribute definition: Overwrites base class.
     *
     * @var array
     * @see Smarty_Internal_CompileBase
     */
    public $option_flags = array('nocache', 'inline', 'caching');

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

    /**
     * Valid scope names
     *
     * @var array
     */
    public $valid_scopes = array(
        'parent' => Smarty::SCOPE_PARENT, 'root' => Smarty::SCOPE_ROOT,
        'global' => Smarty::SCOPE_GLOBAL, 'tpl_root' => Smarty::SCOPE_TPL_ROOT,
        'smarty' => Smarty::SCOPE_SMARTY
    );

    /**
     * Compiles code for the {include} tag
     *
     * @param array                                  $args     array with attributes from parser
     * @param Smarty_Internal_SmartyTemplateCompiler $compiler compiler object
     *
     * @return string
     * @throws \Exception
     * @throws \SmartyCompilerException
     * @throws \SmartyException
     */
    public function compile($args, Smarty_Internal_SmartyTemplateCompiler $compiler)
    {
        $uid = $t_hash = null;
        // check and get attributes
        $_attr = $this->getAttributes($compiler, $args);
        $fullResourceName = $source_resource = $_attr[ 'file' ];
        $variable_template = false;
        $cache_tpl = false;
        // parse resource_name
        if (preg_match('/^([\'"])(([A-Za-z0-9_\-]{2,})[:])?(([^$()]+)|(.+))\1$/', $source_resource, $match)) {
            $type = !empty($match[ 3 ]) ? $match[ 3 ] : $compiler->template->smarty->default_resource_type;
            $name = !empty($match[ 5 ]) ? $match[ 5 ] : $match[ 6 ];
            $handler = Smarty_Resource::load($compiler->smarty, $type);
            if ($handler->recompiled || $handler->uncompiled) {
                $variable_template = true;
            }
            if (!$variable_template) {
                if ($type !== 'string') {
                    $fullResourceName = "{$type}:{$name}";
                    $compiled = $compiler->parent_compiler->template->compiled;
                    if (isset($compiled->includes[ $fullResourceName ])) {
                        $compiled->includes[ $fullResourceName ]++;
                        $cache_tpl = true;
                    } else {
                        if ("{$compiler->template->source->type}:{$compiler->template->source->name}" ==
                            $fullResourceName
                        ) {
                            // recursive call of current template
                            $compiled->includes[ $fullResourceName ] = 2;
                            $cache_tpl = true;
                        } else {
                            $compiled->includes[ $fullResourceName ] = 1;
                        }
                    }
                    $fullResourceName = $match[ 1 ] . $fullResourceName . $match[ 1 ];
                }
            }
            if (empty($match[ 5 ])) {
                $variable_template = true;
            }
        } else {
            $variable_template = true;
        }
        // scope setup
        $_scope = $compiler->convertScope($_attr, $this->valid_scopes);
        // set flag to cache subtemplate object when called within loop or template name is variable.
        if ($cache_tpl || $variable_template || $compiler->loopNesting > 0) {
            $_cache_tpl = 'true';
        } else {
            $_cache_tpl = 'false';
        }
        // assume caching is off
        $_caching = Smarty::CACHING_OFF;
        $call_nocache = $compiler->tag_nocache || $compiler->nocache;
        // caching was on and {include} is not in nocache mode
        if ($compiler->template->caching && !$compiler->nocache && !$compiler->tag_nocache) {
            $_caching = self::CACHING_NOCACHE_CODE;
        }
        // flag if included template code should be merged into caller
        $merge_compiled_includes = ($compiler->smarty->merge_compiled_includes || $_attr[ 'inline' ] === true) &&
                                   !$compiler->template->source->handler->recompiled;
        if ($merge_compiled_includes) {
            // variable template name ?
            if ($variable_template) {
                $merge_compiled_includes = false;
            }
            // variable compile_id?
            if (isset($_attr[ 'compile_id' ]) && $compiler->isVariable($_attr[ 'compile_id' ])) {
                $merge_compiled_includes = false;
            }
        }
        /*
        * if the {include} tag provides individual parameter for caching or compile_id
        * the subtemplate must not be included into the common cache file and is treated like
        * a call in nocache mode.
        *
        */
        if ($_attr[ 'nocache' ] !== true && $_attr[ 'caching' ]) {
            $_caching = $_new_caching = (int)$_attr[ 'caching' ];
            $call_nocache = true;
        } else {
            $_new_caching = Smarty::CACHING_LIFETIME_CURRENT;
        }
        if (isset($_attr[ 'cache_lifetime' ])) {
            $_cache_lifetime = $_attr[ 'cache_lifetime' ];
            $call_nocache = true;
            $_caching = $_new_caching;
        } else {
            $_cache_lifetime = '$_smarty_tpl->cache_lifetime';
        }
        if (isset($_attr[ 'cache_id' ])) {
            $_cache_id = $_attr[ 'cache_id' ];
            $call_nocache = true;
            $_caching = $_new_caching;
        } else {
            $_cache_id = '$_smarty_tpl->cache_id';
        }
        if (isset($_attr[ 'compile_id' ])) {
            $_compile_id = $_attr[ 'compile_id' ];
        } else {
            $_compile_id = '$_smarty_tpl->compile_id';
        }
        // if subtemplate will be called in nocache mode do not merge
        if ($compiler->template->caching && $call_nocache) {
            $merge_compiled_includes = false;
        }
        // assign attribute
        if (isset($_attr[ 'assign' ])) {
            // output will be stored in a smarty variable instead of being displayed
            if ($_assign = $compiler->getId($_attr[ 'assign' ])) {
                $_assign = "'{$_assign}'";
                if ($compiler->tag_nocache || $compiler->nocache || $call_nocache) {
                    // create nocache var to make it know for further compiling
                    $compiler->setNocacheInVariable($_attr[ 'assign' ]);
                }
            } else {
                $_assign = $_attr[ 'assign' ];
            }
        }
        $has_compiled_template = false;
        if ($merge_compiled_includes) {
            $c_id = isset($_attr[ 'compile_id' ]) ? $_attr[ 'compile_id' ] : $compiler->template->compile_id;
            // we must observe different compile_id and caching
            $t_hash = sha1($c_id . ($_caching ? '--caching' : '--nocaching'));
            $compiler->smarty->allow_ambiguous_resources = true;
            /* @var Smarty_Internal_Template $tpl */
            $tpl = new $compiler->smarty->template_class(
                trim($fullResourceName, '"\''),
                $compiler->smarty,
                $compiler->template,
                $compiler->template->cache_id,
                $c_id,
                $_caching
            );
            $uid = $tpl->source->type . $tpl->source->uid;
            if (!isset($compiler->parent_compiler->mergedSubTemplatesData[ $uid ][ $t_hash ])) {
                $has_compiled_template = $this->compileInlineTemplate($compiler, $tpl, $t_hash);
            } else {
                $has_compiled_template = true;
            }
            unset($tpl);
        }
        // delete {include} standard attributes
        unset($_attr[ 'file' ], $_attr[ 'assign' ], $_attr[ 'cache_id' ], $_attr[ 'compile_id' ], $_attr[ 'cache_lifetime' ], $_attr[ 'nocache' ], $_attr[ 'caching' ], $_attr[ 'scope' ], $_attr[ 'inline' ]);
        // remaining attributes must be assigned as smarty variable
        $_vars = 'array()';
        if (!empty($_attr)) {
            $_pairs = array();
            // create variables
            foreach ($_attr as $key => $value) {
                $_pairs[] = "'$key'=>$value";
            }
            $_vars = 'array(' . join(',', $_pairs) . ')';
        }
        $update_compile_id = $compiler->template->caching && !$compiler->tag_nocache && !$compiler->nocache &&
                             $_compile_id !== '$_smarty_tpl->compile_id';
        if ($has_compiled_template && !$call_nocache) {
            $_output = "<?php\n";
            if ($update_compile_id) {
                $_output .= $compiler->makeNocacheCode("\$_compile_id_save[] = \$_smarty_tpl->compile_id;\n\$_smarty_tpl->compile_id = {$_compile_id};\n");
            }
            if (!empty($_attr) && $_caching === 9999 && $compiler->template->caching) {
                $_vars_nc = "foreach ($_vars as \$ik => \$iv) {\n";
                $_vars_nc .= "\$_smarty_tpl->tpl_vars[\$ik] =  new Smarty_Variable(\$iv);\n";
                $_vars_nc .= "}\n";
                $_output .= substr($compiler->processNocacheCode('<?php ' . $_vars_nc . "?>\n", true), 6, -3);
            }
            if (isset($_assign)) {
                $_output .= "ob_start();\n";
            }
            $_output .= "\$_smarty_tpl->_subTemplateRender({$fullResourceName}, {$_cache_id}, {$_compile_id}, {$_caching}, {$_cache_lifetime}, {$_vars}, {$_scope}, {$_cache_tpl}, '{$compiler->parent_compiler->mergedSubTemplatesData[$uid][$t_hash]['uid']}', '{$compiler->parent_compiler->mergedSubTemplatesData[$uid][$t_hash]['func']}');\n";
            if (isset($_assign)) {
                $_output .= "\$_smarty_tpl->assign({$_assign}, ob_get_clean());\n";
            }
            if ($update_compile_id) {
                $_output .= $compiler->makeNocacheCode("\$_smarty_tpl->compile_id = array_pop(\$_compile_id_save);\n");
            }
            $_output .= "?>";
            return $_output;
        }
        if ($call_nocache) {
            $compiler->tag_nocache = true;
        }
        $_output = "<?php ";
        if ($update_compile_id) {
            $_output .= "\$_compile_id_save[] = \$_smarty_tpl->compile_id;\n\$_smarty_tpl->compile_id = {$_compile_id};\n";
        }
        // was there an assign attribute
        if (isset($_assign)) {
            $_output .= "ob_start();\n";
        }
        $_output .= "\$_smarty_tpl->_subTemplateRender({$fullResourceName}, $_cache_id, $_compile_id, $_caching, $_cache_lifetime, $_vars, $_scope, {$_cache_tpl});\n";
        if (isset($_assign)) {
            $_output .= "\$_smarty_tpl->assign({$_assign}, ob_get_clean());\n";
        }
        if ($update_compile_id) {
            $_output .= "\$_smarty_tpl->compile_id = array_pop(\$_compile_id_save);\n";
        }
        $_output .= "?>";
        return $_output;
    }

    /**
     * Compile inline sub template
     *
     * @param \Smarty_Internal_SmartyTemplateCompiler $compiler
     * @param \Smarty_Internal_Template               $tpl
     * @param string                                  $t_hash
     *
     * @return bool
     * @throws \Exception
     * @throws \SmartyException
     */
    public function compileInlineTemplate(
        Smarty_Internal_SmartyTemplateCompiler $compiler,
        Smarty_Internal_Template $tpl,
        $t_hash
    ) {
        $uid = $tpl->source->type . $tpl->source->uid;
        if (!($tpl->source->handler->uncompiled) && $tpl->source->exists) {
            $compiler->parent_compiler->mergedSubTemplatesData[ $uid ][ $t_hash ][ 'uid' ] = $tpl->source->uid;
            if (isset($compiler->template->inheritance)) {
                $tpl->inheritance = clone $compiler->template->inheritance;
            }
            $tpl->compiled = new Smarty_Template_Compiled();
            $tpl->compiled->nocache_hash = $compiler->parent_compiler->template->compiled->nocache_hash;
            $tpl->loadCompiler();
            // save unique function name
            $compiler->parent_compiler->mergedSubTemplatesData[ $uid ][ $t_hash ][ 'func' ] =
            $tpl->compiled->unifunc = 'content_' . str_replace(array('.', ','), '_', uniqid('', true));
            // make sure whole chain gets compiled
            $tpl->mustCompile = true;
            $compiler->parent_compiler->mergedSubTemplatesData[ $uid ][ $t_hash ][ 'nocache_hash' ] =
                $tpl->compiled->nocache_hash;
            if ($tpl->source->type === 'file') {
                $sourceInfo = $tpl->source->filepath;
            } else {
                $basename = $tpl->source->handler->getBasename($tpl->source);
                $sourceInfo = $tpl->source->type . ':' .
                              ($basename ? $basename : $tpl->source->name);
            }
            // get compiled code
            $compiled_code = "<?php\n\n";
            $compiled_code .= "/* Start inline template \"{$sourceInfo}\" =============================*/\n";
            $compiled_code .= "function {$tpl->compiled->unifunc} (Smarty_Internal_Template \$_smarty_tpl) {\n";
            $compiled_code .= "?>\n" . $tpl->compiler->compileTemplateSource($tpl, null, $compiler->parent_compiler);
            $compiled_code .= "<?php\n";
            $compiled_code .= "}\n?>\n";
            $compiled_code .= $tpl->compiler->postFilter($tpl->compiler->blockOrFunctionCode);
            $compiled_code .= "<?php\n\n";
            $compiled_code .= "/* End inline template \"{$sourceInfo}\" =============================*/\n";
            $compiled_code .= '?>';
            unset($tpl->compiler);
            if ($tpl->compiled->has_nocache_code) {
                // replace nocache_hash
                $compiled_code =
                    str_replace(
                        "{$tpl->compiled->nocache_hash}",
                        $compiler->template->compiled->nocache_hash,
                        $compiled_code
                    );
                $compiler->template->compiled->has_nocache_code = true;
            }
            $compiler->parent_compiler->mergedSubTemplatesCode[ $tpl->compiled->unifunc ] = $compiled_code;
            return true;
        } else {
            return false;
        }
    }
}
