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<?php
/**
* $Header$
*
* @version $Revision: 305290 $
* @package Log
*/
/**
* The Log_display class is a concrete implementation of the Log::
* abstract class which writes message into browser in usual PHP maner.
* This may be useful because when you use PEAR::setErrorHandling in
* PEAR_ERROR_CALLBACK mode error messages are not displayed by
* PHP error handler.
*
* @author Paul Yanchenko <pusher@inaco.ru>
* @since Log 1.8.0
* @package Log
*
* @example display.php Using the display handler.
*/
class Log_display extends Log
{
/**
* String containing the format of a log line.
* @var string
* @access private
*/
var $_lineFormat = '<b>%3$s</b>: %4$s';
/**
* String containing the timestamp format. It will be passed directly to
* strftime(). Note that the timestamp string will generated using the
* current locale.
* @var string
* @access private
*/
var $_timeFormat = '%b %d %H:%M:%S';
/**
* Flag indicating whether raw message text should be passed directly to
* the log system. Otherwise, the text will be converted to an HTML-safe
* representation.
* @var boolean
* @access private
*/
var $_rawText = false;
/**
* Constructs a new Log_display object.
*
* @param string $name Ignored.
* @param string $ident The identity string.
* @param array $conf The configuration array.
* @param int $level Log messages up to and including this level.
* @access public
*/
function Log_display($name = '', $ident = '', $conf = array(),
$level = PEAR_LOG_DEBUG)
{
$this->_id = md5(microtime());
$this->_ident = $ident;
$this->_mask = Log::UPTO($level);
/* Start by configuring the line format. */
if (!empty($conf['lineFormat'])) {
$this->_lineFormat = str_replace(array_keys($this->_formatMap),
array_values($this->_formatMap),
$conf['lineFormat']);
}
/* We may need to prepend a string to our line format. */
$prepend = null;
if (isset($conf['error_prepend'])) {
$prepend = $conf['error_prepend'];
} else {
$prepend = ini_get('error_prepend_string');
}
if (!empty($prepend)) {
$this->_lineFormat = $prepend . $this->_lineFormat;
}
/* We may also need to append a string to our line format. */
$append = null;
if (isset($conf['error_append'])) {
$append = $conf['error_append'];
} else {
$append = ini_get('error_append_string');
}
if (!empty($append)) {
$this->_lineFormat .= $append;
}
/* Lastly, the line ending sequence is also configurable. */
if (isset($conf['linebreak'])) {
$this->_lineFormat .= $conf['linebreak'];
} else {
$this->_lineFormat .= "<br />\n";
}
/* The user can also change the time format. */
if (!empty($conf['timeFormat'])) {
$this->_timeFormat = $conf['timeFormat'];
}
/* Message text conversion can be disabled. */
if (isset($conf['rawText'])) {
$this->_rawText = $conf['rawText'];
}
}
/**
* Opens the display handler.
*
* @access public
* @since Log 1.9.6
*/
function open()
{
$this->_opened = true;
return true;
}
/**
* Closes the display handler.
*
* @access public
* @since Log 1.9.6
*/
function close()
{
$this->_opened = false;
return true;
}
/**
* Writes $message to the text browser. Also, passes the message
* along to any Log_observer instances that are observing this Log.
*
* @param mixed $message String or object containing the message to log.
* @param string $priority The priority of the message. Valid
* values are: PEAR_LOG_EMERG, PEAR_LOG_ALERT,
* PEAR_LOG_CRIT, PEAR_LOG_ERR, PEAR_LOG_WARNING,
* PEAR_LOG_NOTICE, PEAR_LOG_INFO, and PEAR_LOG_DEBUG.
* @return boolean True on success or false on failure.
* @access public
*/
function log($message, $priority = null)
{
/* If a priority hasn't been specified, use the default value. */
if ($priority === null) {
$priority = $this->_priority;
}
/* Abort early if the priority is above the maximum logging level. */
if (!$this->_isMasked($priority)) {
return false;
}
/* Extract the string representation of the message. */
$message = $this->_extractMessage($message);
/* Convert the message to an HTML-friendly represention unless raw
* text has been requested. */
if ($this->_rawText === false) {
$message = nl2br(htmlspecialchars($message));
}
/* Build and output the complete log line. */
echo $this->_format($this->_lineFormat,
strftime($this->_timeFormat),
$priority,
$message);
/* Notify observers about this log message. */
$this->_announce(array('priority' => $priority, 'message' => $message));
return true;
}
}
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