From 7186732cc657575d8abd86e99fc22a190991d10b Mon Sep 17 00:00:00 2001
From: pdontthink <pdontthink@7612ce4b-ef26-0410-bec9-ea0150e637f0>
Date: Thu, 21 Sep 2006 12:51:27 +0000
Subject: [PATCH] Abstract template file location logic and enable plugin
 templating.  This class still needs abstraction which is the next task here. 
 Only possibly contentious change people should look at here is the use of
 file_exists() to find template files instead of reling on a hard-coded list
 of files in template.php.

git-svn-id: https://svn.code.sf.net/p/squirrelmail/code/trunk/squirrelmail@11727 7612ce4b-ef26-0410-bec9-ea0150e637f0
---
 class/template/template.class.php | 206 ++++++++++++++++++++++++------
 1 file changed, 169 insertions(+), 37 deletions(-)

diff --git a/class/template/template.class.php b/class/template/template.class.php
index 6bc25cca..bf2dcc3f 100755
--- a/class/template/template.class.php
+++ b/class/template/template.class.php
@@ -42,6 +42,13 @@ class Template
    */
   var $template_dir = '';
 
+  /**
+   * The default template directory
+   *
+   * @var string
+   */
+  var $default_template_dir = 'templates/default/';
+
   /**
    * Template files provided by this template set
    *
@@ -223,46 +230,171 @@ class Template
     }
   }
 
-  /**
-   * Display the template
-   *
-   * @param string $file The template file to use
-   */
-  function display($file)
-  {
-    // Pull in our config file
-    $t = &$this->values; // place values array directly in scope
-
-    $template = in_array($file, $this->templates_provided) ? $this->template_dir . $file : SM_PATH .'templates/default/'. $file;
-    if (!file_exists($template)) {
-        trigger_error('The template "'.htmlspecialchars($file).'" could not be displayed!', E_USER_ERROR);
-    } else {
-        ob_start();
-        include($template);
-        ob_end_flush();
+
+    /**
+     *
+     * Return the relative template directory path for this template set.
+     *
+     * @return string The relative path to the template directory based
+     *                from the main SquirrelMail directory (SM_PATH).
+     *
+     */
+    function get_template_file_directory() {
+
+//FIXME: temporarily parse off SM_PATH from the template dir class attribute until we can change the entire template subsystem such that the template dir is derived internally in this class from the template ID/name/attributes
+return substr($this->template_dir, strlen(SM_PATH));
+        return $this->template_dir;
+
     }
-  }
 
-  /**
-   * Return the results of applying a template.
-   *
-   * @param string $file The template file to use
-   * @return string A string of the results
-   */
-  function fetch($file) {
-    $t = &$this->values; // place values array directly in scope
-
-    $template = in_array($file, $this->templates_provided) ? $this->template_dir . $file : SM_PATH .'templates/default/'. $file;
-    if (!file_exists($template)) {
-        trigger_error('The template "'.htmlspecialchars($file).'" could not be fetched!', E_USER_ERROR);
-    } else {
-        ob_start();
-        include($template);
-        $contents = ob_get_contents();
-        ob_end_clean();
-        return $contents;
+
+    /**
+     *
+     * Return the relative template directory path for the DEFAULT template set.
+     *
+     * @return string The relative path to the default template directory based
+     *                from the main SquirrelMail directory (SM_PATH).
+     *
+     */
+    function get_default_template_file_directory() {
+
+        return $this->default_template_dir;
+
+    }
+
+
+    /**
+     *
+     * Find the right template file.
+     *
+     * Templates are expected to be found in the template set directory
+     * (for example SM_PATH/templates/<template name>/) or, in the case
+     * of plugin templates, in a plugin directory in the template set
+     * directory (for example, 
+     * SM_PATH/templates/<template name>/plugins/<plugin name>/) *OR* in 
+     * a template directory in the plugin as a fallback (for example,
+     * SM_PATH/plugins/<plugin name>/templates/<template name>/).  If 
+     * the correct file is not found for the current template set, a 
+     * default template is loaded, which is expected to be found in the 
+     * default template directory (for example, SM_PATH/templates/default/)
+     * or for plugins, in a plugin directory in the default template set
+     * (for example, SM_PATH/templates/default/plugins/<plugin name>/),
+     * *OR* in a default template directory in the plugin as a fallback
+     * (for example, SM_PATH/plugins/<plugin name>/templates/default/).
+     *
+     * @param string $filename The name of the template file,
+     *                         possibly prefaced with 
+     *                         "plugins/<plugin name>/"
+     *                         indicating that it is a plugin
+     *                         template.
+     *
+     * @return string The full path to the template file; if 
+     *                not found, an empty string.  The caller
+     *                is responsible for throwing erros or 
+     *                other actions if template file is not found.
+     *
+     */
+    function get_template_file_path($filename) {
+
+        // is the template found in the normal template directory?
+        //
+        $filepath = SM_PATH . $this->get_template_file_directory() . $filename;
+        if (!file_exists($filepath)) {
+
+            // no, so now we have to get the default template...
+            // however, in the case of a plugin template, let's
+            // give one more try to find the right template as
+            // provided by the plugin
+            //
+            if (strpos($filename, 'plugins/') === 0) {
+
+                $plugin_name = substr($filename, 8, strpos($filename, '/', 8) - 8);
+                $filepath = SM_PATH . 'plugins/' . $plugin_name . '/'
+                          . $this->get_template_file_directory() 
+                          . substr($filename, strlen($plugin_name) + 9);
+
+                // no go, we have to get the default template
+                // from the plugin
+                //
+                if (!file_exists($filepath)) {
+
+                    $filepath = SM_PATH . 'plugins/' . $plugin_name . '/'
+                              . $this->get_default_template_file_directory() 
+                              . substr($filename, strlen($plugin_name) + 9);
+
+                    // no dice whatsoever, return empty string
+                    //
+                    if (!file_exists($filepath)) {
+                        $filepath = '';
+                    }
+
+                }
+
+
+            // get default template for non-plugin templates
+            //
+            } else {
+
+                $filepath = SM_PATH . $this->get_default_template_file_directory() 
+                          . $filename;
+
+                // no dice whatsoever, return empty string
+                //
+                if (!file_exists($filepath)) {
+                    $filepath = '';
+                }
+
+            }
+
+        }
+
+        return $filepath;
+
+    }
+
+
+    /**
+     * Display the template
+     *
+     * @param string $file The template file to use
+     */
+    function display($file)
+    {
+        // Pull in our config file
+        $t = &$this->values; // place values array directly in scope
+
+        // Get right template file
+        $template = $this->get_template_file_path($file);
+        if (empty($template)) {
+            trigger_error('The template "'.htmlspecialchars($file).'" could not be displayed!', E_USER_ERROR);
+        } else {
+            ob_start();
+            include($template);
+            ob_end_flush();
+        }
+    }
+
+    /**
+     * Return the results of applying a template.
+     *
+     * @param string $file The template file to use
+     * @return string A string of the results
+     */
+    function fetch($file) {
+        $t = &$this->values; // place values array directly in scope
+
+        // Get right template file
+        $template = $this->get_template_file_path($file);
+        if (!file_exists($template)) {
+            trigger_error('The template "'.htmlspecialchars($file).'" could not be fetched!', E_USER_ERROR);
+        } else {
+            ob_start();
+            include($template);
+            $contents = ob_get_contents();
+            ob_end_clean();
+            return $contents;
+        }
     }
-  }
 
   /**
    * Return paths to the required javascript files.  Used when generating page
-- 
2.25.1