- added stream resources ($smarty->display('mystream://mytemplate'))

- added stream variables  {$mystream:myvar}

change_log.txt

@@ -1,3 +1,7 @@
+04/18/2009
+- added stream resources  ($smarty->display('mystream://mytemplate'))
+- added stream variables  {$mystream:myvar}
+
 04/14/2009
 - fixed compile_id handling on {include} tags
 - fixed append/prepend attributes in {block} tag

libs/Smarty.class.php

@@ -173,6 +173,9 @@ class Smarty extends Smarty_Internal_TemplateBase {
     */
     public function __construct()
     {
+        // set instance object
+        self::instance($this); 
+
         if (is_callable('mb_internal_encoding')) {
             $this->has_mb = true;
             mb_internal_encoding($this->resource_char_set);
@@ -185,15 +188,13 @@ class Smarty extends Smarty_Internal_TemplateBase {
         if (!empty($this->exception_handler))
             set_exception_handler($this->exception_handler); 
         // set default dirs
-        $this->template_dir = '.' . DIRECTORY_SEPARATOR . 'templates' . DIRECTORY_SEPARATOR;
+        $this->template_dir = array('.' . DIRECTORY_SEPARATOR . 'templates' . DIRECTORY_SEPARATOR);
         $this->compile_dir = '.' . DIRECTORY_SEPARATOR . 'templates_c' . DIRECTORY_SEPARATOR;
         $this->plugins_dir = array(dirname(__FILE__) . DIRECTORY_SEPARATOR . 'plugins' . DIRECTORY_SEPARATOR);
         $this->cache_dir = '.' . DIRECTORY_SEPARATOR . 'cache' . DIRECTORY_SEPARATOR;
         $this->config_dir = '.' . DIRECTORY_SEPARATOR . 'configs' . DIRECTORY_SEPARATOR;
         $this->sysplugins_dir = dirname(__FILE__) . DIRECTORY_SEPARATOR . 'sysplugins' . DIRECTORY_SEPARATOR;
         $this->debug_tpl = SMARTY_DIR . 'debug.tpl'; 
-        // set instance object
-        self::instance($this); 
         // load base plugins
         $this->loadPlugin('Smarty_Internal_Base');
         $this->loadPlugin('Smarty_Internal_PluginBase');

libs/sysplugins/internal.resource_stream.php

@@ -0,0 +1,101 @@
+<?php
+
+/**
+* Smarty Internal Plugin Resource Stream
+* 
+* Implements the streams as resource for Smarty template
+* 
+* @package Smarty
+* @subpackage TemplateResources
+* @author Uwe Tews 
+*/
+/**
+* Smarty Internal Plugin Resource Stream
+*/
+
+class Smarty_Internal_Resource_Stream extends Smarty_Internal_Base {
+    // classes used for compiling Smarty templates from file resource
+    public $compiler_class = 'Smarty_Internal_SmartyTemplateCompiler';
+    public $template_lexer_class = 'Smarty_Internal_Templatelexer';
+    public $template_parser_class = 'Smarty_Internal_Templateparser';
+
+    /**
+    * Get filepath to template source
+    * 
+    * @param object $_template template object
+    * @return string return 'string' as template source is not a file
+    */
+    public function getTemplateFilepath($_template)
+    { 
+        // no filepath for strings
+        // return resource name for compiler error messages
+        return $_template->resource_name;
+    } 
+
+    /**
+    * Get timestamp to template source
+    * 
+    * @param object $_template template object
+    * @return boolean false as string resources have no timestamp
+    */
+    public function getTemplateTimestamp($_template)
+    { 
+        // strings must always be compiled and have no timestamp
+        return false;
+    } 
+
+    /**
+    * Retuen template source from resource name
+    * 
+    * @param object $_template template object
+    * @return string content of template source
+    */
+    public function getTemplateSource($_template)
+    { 
+        // return template string
+        $_template->template_source = '';
+        $fp = fopen($_template->resource_name,'r+');
+        while (!feof($fp)) {
+            $_template->template_source .= fgets($fp);
+        } 
+        fclose($fp);
+
+        return true;
+    } 
+
+    /**
+    * Return flag that this resource uses the compiler
+    * 
+    * @return boolean true
+    */
+    public function usesCompiler()
+    { 
+        // resource string is template, needs compiler
+        return true;
+    } 
+
+    /**
+    * Return flag that this resource is evaluated
+    * 
+    * @return boolean true
+    */
+    public function isEvaluated()
+    { 
+        // compiled template is evaluated instead of saved to disk
+        return true;
+    } 
+
+    /**
+    * Get filepath to compiled template
+    * 
+    * @param object $_template template object
+    * @return boolean return false as compiled template is not stored
+    */
+    public function getCompiledFilepath($_template)
+    { 
+        // no filepath for strings
+        return false;
+    } 
+} 
+
+?>

libs/sysplugins/internal.template.php

@@ -473,7 +473,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
             // no resource given, use default
             $this->resource_type = $this->smarty->default_resource_type;
             $this->resource_name = $template_resource;
-        } else {
+        } elseif (strpos($template_resource, '://') != strpos($template_resource, ':')) {
             // get type and name from path
             list($this->resource_type, $this->resource_name) = explode(':', $template_resource, 2);
             if (strlen($this->resource_type) == 1) {
@@ -483,11 +483,15 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
             } else {
                 $this->resource_type = strtolower($this->resource_type);
             } 
+        } else {
+            // stream resource
+            $this->resource_type = 'stream';
+            $this->resource_name = $template_resource;
         } 
         // load resource handler if required
         if (!isset($this->resource_objects[$this->resource_type])) {
             // is this an internal or custom resource?
-            if (in_array($this->resource_type, array('file', 'php', 'string', 'extend'))) {
+            if (in_array($this->resource_type, array('file', 'php', 'string', 'extend', 'stream'))) {
                 // internal, get from sysplugins dir
                 $_resource_class = "Smarty_Internal_Resource_{$this->resource_type}";
             } else {
@@ -500,7 +504,7 @@ class Smarty_Internal_Template extends Smarty_Internal_TemplateBase {
         } 
         // cache template object under a unique ID
         // do not cache string resources
-        if ($this->resource_type != 'string') {
+        if (!in_array($this->resource_type, array('string', 'stream'))) {
                     Smarty::$template_objects[$this->buildTemplateId ($this->template_resource, $this->cache_id, $this->compile_id)] = $this;
                 } 
                 return true;

libs/sysplugins/internal.templatebase.php

@@ -275,6 +275,29 @@ class Smarty_Internal_TemplateBase {
             return '';
         } 
     } 
+    /**
+    * gets  a stream variable
+    * 
+    * @param string $variable the stream of the variable
+    * @return mixed the value of the global variable
+    */
+    public function getStreamVariable($variable)
+    {
+        $_result = '';
+        if ($fp = fopen($variable, 'r+')) {
+            while (!feof($fp)) {
+                $_result .= fgets($fp);
+            } 
+            fclose($fp);
+            return $_result;
+        } 
+
+        if (Smarty::$error_unassigned) {
+            throw new Exception('Undefined global variable "' . $variable . '"');
+        } else {
+            return '';
+        } 
+    } 
 
     /**
     * creates a template object