optional variable - quick patch

[Greg Panula]

Here is a quick patch to odf.php that adds a new function(OptVar).  OptVar allows one to specify an optional variable in the template… i.e. maybe this variable is in the template, maybe it isn't.

It is a quick & dirty hack but thought others might find it useful.

--- a/library/odf.php   Tue Apr 03 14:48:22 2012 -0500
+++ b/library/odf.php   Wed Apr 04 09:06:17 2012 -0500
@@ -88,6 +88,29 @@
         return $this;
     }
     /**
+     * Assing an optional template variable
+     *
+     * @param string $key name of the variable within the template
+     * @param string $value replacement value
+     * @param bool $encode if true, special XML characters are encoded
+     * @return odf
+     */
+    public function OptVar($key, $value, $encode = true, $charset = 'ISO-8859')
+    {
+        if (strpos($this->contentXml, $this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']) === false) {
+   // variable was NOT found in the template
+   $notme="<text:line-break/>";
+   $this->$notme;
+   }
+   else {  // variable WAS found in the template
+        // variable was found in the template, lets act on it
+        $value = $encode ? htmlspecialchars($value) : $value;
+        $value = ($charset == 'ISO-8859') ? utf8_encode($value) : $value;
+        $this->vars[$this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']] = str_replace("\n", "<text:line-break/>", $value);        
+   }
+   return $this;
+    }
+    /**
      * Assign a template variable as a picture
      *
      * @param string $key name of the variable within the template

[Greg Panula]

Ok, here's a better patch… fixes the Undefined error

--- a/library/odf.php   Tue Apr 03 14:48:22 2012 -0500
+++ b/library/odf.php   Wed Apr 04 09:32:54 2012 -0500
@@ -32,6 +32,7 @@
     protected $images = array();
     protected $vars = array();
     protected $segments = array();
+    protected $emptyvar;
     const PIXEL_TO_CM = 0.026458333;
     /**
      * Class constructor
@@ -88,6 +89,29 @@
         return $this;
     }
     /**
+     * Assing an optional template variable
+     *
+     * @param string $key name of the variable within the template
+     * @param string $value replacement value
+     * @param bool $encode if true, special XML characters are encoded
+     * @return odf
+     */
+    public function OptVar($key, $value, $encode = true, $charset = 'ISO-8859')
+    {
+        if (strpos($this->contentXml, $this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']) === false) {
+   // variable was NOT found in the template
+   $notme="emptyvar";
+   $this->$notme;
+   }
+   else {  // variable WAS found in the template
+        // variable was found in the template, lets act on it
+        $value = $encode ? htmlspecialchars($value) : $value;
+        $value = ($charset == 'ISO-8859') ? utf8_encode($value) : $value;
+        $this->vars[$this->config['DELIMITER_LEFT'] . $key . $this->config['DELIMITER_RIGHT']] = str_replace("\n", "<text:line-break/>", $value);        
+   }
+   return $this;
+    }
+    /**
      * Assign a template variable as a picture
      *
      * @param string $key name of the variable within the template