CI_Email::print_debugger() option to limit the type of data to be pri…

…nted

(an alternative to PR #1759; partially solves issue #1742)

system/libraries/Email.php

@@ -2062,9 +2062,11 @@ protected function _get_hostname()
 	/**
 	 * Get Debug Message
 	 *
+	 * @param	array	$include	List of raw data chunks to include in the output
+	 *					Valid options are: 'headers', 'subject', 'body'
 	 * @return	string
 	 */
-	public function print_debugger()
+	public function print_debugger($include = array('headers', 'subject', 'body'))
 	{
 		$msg = '';
 
@@ -2076,7 +2078,26 @@ public function print_debugger()
 			}
 		}
 
-		return $msg.'<pre>'.$this->_header_str."\n".htmlspecialchars($this->_subject)."\n".htmlspecialchars($this->_finalbody).'</pre>';
+		// Determine which parts of our raw data needs to be printed
+		$raw_data = '';
+		is_array($include) OR $include = array($include);
+
+		if (in_array('headers', $include, TRUE))
+		{
+			$raw_data = $this->_header_str."\n";
+		}
+
+		if (in_array('subject', $include, TRUE))
+		{
+			$raw_data .= htmlspecialchars($this->_subject)."\n";
+		}
+
+		if (in_array('body', $include, TRUE))
+		{
+			$raw_data .= htmlspecialchars($this->_finalbody);
+		}
+
+		return $msg.($raw_data === '' ? '' : '<pre>'.$raw_data.'</pre>');
 	}
 
 	// --------------------------------------------------------------------

user_guide_src/source/changelog.rst

@@ -242,6 +242,7 @@ Release Date: Not Released
 	 -  Default charset now relies on the global ``$config['charset']`` setting.
 	 -  Removed unused protected method ``_get_ip()`` (:doc:`Input Library <libraries/input>`'s ``ip_address()`` should be used anyway).
 	 -  Internal method ``_prep_q_encoding()`` now utilizes PHP's *mbstring* and *iconv* extensions (when available) and no longer has a second (``$from``) argument.
+	 -  Added an optional parameter to ``print_debugger()`` to allow specifying which parts of the message should be printed ('headers', 'subject', 'body').
    -  :doc:`Pagination Library <libraries/pagination>` changes include:
 	 -  Added support for the anchor "rel" attribute.
 	 -  Added support for setting custom attributes.

user_guide_src/source/libraries/email.rst

@@ -268,11 +268,21 @@ parameter as mime-type::
 	$this->email->attach($buffer, 'attachment', 'report.pdf', 'application/pdf');
 
 $this->email->print_debugger()
--------------------------------
+------------------------------
 
 Returns a string containing any server messages, the email headers, and
 the email messsage. Useful for debugging.
 
+You can optionally specify which parts of the message should be printed.
+Valid options are: **headers**, **subject**, **body**.
+
+Example::
+
+	// Will only print the email headers, excluding the message subject and body
+	$this->email->print_debugger(array('headers'));
+
+.. note:: By default, all of the raw data will be printed.
+
 Overriding Word Wrapping
 ========================