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<?php /** * $Header$ * * @version $Revision: 278003 $ * @package Log */
/** * The Log_win class is a concrete implementation of the Log abstract * class that logs messages to a separate browser window. * * The concept for this log handler is based on part by Craig Davis' article * entitled "JavaScript Power PHP Debugging: * * http://www.zend.com/zend/tut/tutorial-DebugLib.php * * @author Jon Parise <jon@php.net> * @since Log 1.7.0 * @package Log * * @example win.php Using the window handler. */ class Log_win extends Log { /** * The name of the output window. * @var string * @access private */ var $_name = 'LogWindow';
/** * The title of the output window. * @var string * @access private */ var $_title = 'Log Output Window';
/** * Mapping of log priorities to styles. * @var array * @access private */ var $_styles = array( PEAR_LOG_EMERG => 'color: red;', PEAR_LOG_ALERT => 'color: orange;', PEAR_LOG_CRIT => 'color: yellow;', PEAR_LOG_ERR => 'color: green;', PEAR_LOG_WARNING => 'color: blue;', PEAR_LOG_NOTICE => 'color: indigo;', PEAR_LOG_INFO => 'color: violet;', PEAR_LOG_DEBUG => 'color: black;' );
/** * String buffer that holds line that are pending output. * @var array * @access private */ var $_buffer = array();
/** * Constructs a new Log_win object. * * @param string $name Ignored. * @param string $ident The identity string. * @param array $conf The configuration array. * @param int $level Log messages up to and including this level. * @access public */ function Log_win($name, $ident = '', $conf = array(), $level = PEAR_LOG_DEBUG) { $this->_id = md5(microtime()); $this->_name = str_replace(' ', '_', $name); $this->_ident = $ident; $this->_mask = Log::UPTO($level);
if (isset($conf['title'])) { $this->_title = $conf['title']; } if (isset($conf['styles']) && is_array($conf['styles'])) { $this->_styles = $conf['styles']; } if (isset($conf['colors']) && is_array($conf['colors'])) { foreach ($conf['colors'] as $level => $color) { $this->_styles[$level] .= "color: $color;"; } }
register_shutdown_function(array(&$this, '_Log_win')); }
/** * Destructor */ function _Log_win() { if ($this->_opened || (count($this->_buffer) > 0)) { $this->close(); } }
/** * The first time open() is called, it will open a new browser window and * prepare it for output. * * This is implicitly called by log(), if necessary. * * @access public */ function open() { if (!$this->_opened) { $win = $this->_name; $styles = $this->_styles;
if (!empty($this->_ident)) { $identHeader = "$win.document.writeln('<th>Ident</th>')"; } else { $identHeader = ''; }
echo <<< EOT <script language="JavaScript"> $win = window.open('', '{$this->_name}', 'toolbar=no,scrollbars,width=600,height=400'); $win.document.writeln('<html>'); $win.document.writeln('<head>'); $win.document.writeln('<title>{$this->_title}</title>'); $win.document.writeln('<style type="text/css">'); $win.document.writeln('body { font-family: monospace; font-size: 8pt; }'); $win.document.writeln('td,th { font-size: 8pt; }'); $win.document.writeln('td,th { border-bottom: #999999 solid 1px; }'); $win.document.writeln('td,th { border-right: #999999 solid 1px; }'); $win.document.writeln('tr { text-align: left; vertical-align: top; }'); $win.document.writeln('td.l0 { $styles[0] }'); $win.document.writeln('td.l1 { $styles[1] }'); $win.document.writeln('td.l2 { $styles[2] }'); $win.document.writeln('td.l3 { $styles[3] }'); $win.document.writeln('td.l4 { $styles[4] }'); $win.document.writeln('td.l5 { $styles[5] }'); $win.document.writeln('td.l6 { $styles[6] }'); $win.document.writeln('td.l7 { $styles[7] }'); $win.document.writeln('</style>'); $win.document.writeln('<script type="text/javascript">'); $win.document.writeln('function scroll() {'); $win.document.writeln(' body = document.getElementById("{$this->_name}");'); $win.document.writeln(' body.scrollTop = body.scrollHeight;'); $win.document.writeln('}'); $win.document.writeln('<\/script>'); $win.document.writeln('</head>'); $win.document.writeln('<body id="{$this->_name}" onclick="scroll()">'); $win.document.writeln('<table border="0" cellpadding="2" cellspacing="0">'); $win.document.writeln('<tr><th>Time</th>'); $identHeader $win.document.writeln('<th>Priority</th><th width="100%">Message</th></tr>'); </script> EOT; $this->_opened = true; }
return $this->_opened; }
/** * Closes the output stream if it is open. If there are still pending * lines in the output buffer, the output window will be opened so that * the buffer can be drained. * * @access public */ function close() { /* * If there are still lines waiting to be written, open the output * window so that we can drain the buffer. */ if (!$this->_opened && (count($this->_buffer) > 0)) { $this->open(); }
if ($this->_opened) { $this->_writeln('</table>'); $this->_writeln('</body></html>'); $this->_drainBuffer(); $this->_opened = false; }
return ($this->_opened === false); }
/** * Writes the contents of the output buffer to the output window. * * @access private */ function _drainBuffer() { $win = $this->_name; foreach ($this->_buffer as $line) { echo "<script language='JavaScript'>\n"; echo "$win.document.writeln('" . addslashes($line) . "');\n"; echo "self.focus();\n"; echo "</script>\n"; }
/* Now that the buffer has been drained, clear it. */ $this->_buffer = array(); }
/** * Writes a single line of text to the output buffer. * * @param string $line The line of text to write. * * @access private */ function _writeln($line) { /* Add this line to our output buffer. */ $this->_buffer[] = $line;
/* Buffer the output until this page's headers have been sent. */ if (!headers_sent()) { return; }
/* If we haven't already opened the output window, do so now. */ if (!$this->_opened && !$this->open()) { return; }
/* Drain the buffer to the output window. */ $this->_drainBuffer(); }
/** * Logs $message to the output window. The message is also passed 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); $message = preg_replace('/\r\n|\n|\r/', '<br />', $message);
list($usec, $sec) = explode(' ', microtime());
/* Build the output line that contains the log entry row. */ $line = '<tr>'; $line .= sprintf('<td>%s.%s</td>', strftime('%H:%M:%S', $sec), substr($usec, 2, 2)); if (!empty($this->_ident)) { $line .= '<td>' . $this->_ident . '</td>'; } $line .= '<td>' . ucfirst($this->priorityToString($priority)) . '</td>'; $line .= sprintf('<td class="l%d">%s</td>', $priority, $message); $line .= '</tr>';
$this->_writeln($line);
$this->_announce(array('priority' => $priority, 'message' => $message));
return true; }
}
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