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270 lines
8.3 KiB
PHP
270 lines
8.3 KiB
PHP
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<?php
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/**
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* $Header: /repository/pear/Log/Log/win.php,v 1.20 2006/07/26 05:21:47 jon Exp $
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*
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* @version $Revision: 1.20 $
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* @package Log
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*/
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/**
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* The Log_win class is a concrete implementation of the Log abstract
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* class that logs messages to a separate browser window.
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*
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* The concept for this log handler is based on part by Craig Davis' article
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* entitled "JavaScript Power PHP Debugging:
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*
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* http://www.zend.com/zend/tut/tutorial-DebugLib.php
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*
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* @author Jon Parise <jon@php.net>
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* @since Log 1.7.0
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* @package Log
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*
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* @example win.php Using the window handler.
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*/
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class Log_win extends Log
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{
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/**
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* The name of the output window.
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* @var string
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* @access private
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*/
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var $_name = 'LogWindow';
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/**
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* The title of the output window.
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* @var string
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* @access private
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*/
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var $_title = 'Log Output Window';
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/**
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* Mapping of log priorities to styles.
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* @var array
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* @access private
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*/
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var $_styles = array(
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PEAR_LOG_EMERG => 'color: red;',
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PEAR_LOG_ALERT => 'color: orange;',
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PEAR_LOG_CRIT => 'color: yellow;',
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PEAR_LOG_ERR => 'color: green;',
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PEAR_LOG_WARNING => 'color: blue;',
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PEAR_LOG_NOTICE => 'color: indigo;',
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PEAR_LOG_INFO => 'color: violet;',
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PEAR_LOG_DEBUG => 'color: black;'
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);
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/**
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* String buffer that holds line that are pending output.
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* @var array
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* @access private
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*/
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var $_buffer = array();
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/**
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* Constructs a new Log_win object.
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*
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* @param string $name Ignored.
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* @param string $ident The identity string.
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* @param array $conf The configuration array.
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* @param int $level Log messages up to and including this level.
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* @access public
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*/
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function Log_win($name, $ident = '', $conf = array(),
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$level = PEAR_LOG_DEBUG)
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{
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$this->_id = md5(microtime());
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$this->_name = $name;
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$this->_ident = $ident;
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$this->_mask = Log::UPTO($level);
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if (isset($conf['title'])) {
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$this->_title = $conf['title'];
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}
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if (isset($conf['styles']) && is_array($conf['styles'])) {
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$this->_styles = $conf['styles'];
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}
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if (isset($conf['colors']) && is_array($conf['colors'])) {
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foreach ($conf['colors'] as $level => $color) {
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$this->_styles[$level] .= "color: $color;";
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}
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}
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register_shutdown_function(array(&$this, '_Log_win'));
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}
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/**
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* Destructor
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*/
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function _Log_win()
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{
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if ($this->_opened || (count($this->_buffer) > 0)) {
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$this->close();
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}
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}
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/**
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* The first time open() is called, it will open a new browser window and
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* prepare it for output.
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*
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* This is implicitly called by log(), if necessary.
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*
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* @access public
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*/
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function open()
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{
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if (!$this->_opened) {
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$win = $this->_name;
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$styles = $this->_styles;
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if (!empty($this->_ident)) {
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$identHeader = "$win.document.writeln('<th>Ident</th>')";
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} else {
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$identHeader = '';
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}
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echo <<< EOT
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<script language="JavaScript">
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$win = window.open('', '{$this->_name}', 'toolbar=no,scrollbars,width=600,height=400');
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$win.document.writeln('<html>');
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$win.document.writeln('<head>');
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$win.document.writeln('<title>{$this->_title}</title>');
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$win.document.writeln('<style type="text/css">');
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$win.document.writeln('body { font-family: monospace; font-size: 8pt; }');
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$win.document.writeln('td,th { font-size: 8pt; }');
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$win.document.writeln('td,th { border-bottom: #999999 solid 1px; }');
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$win.document.writeln('td,th { border-right: #999999 solid 1px; }');
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$win.document.writeln('tr { text-align: left; vertical-align: top; }');
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$win.document.writeln('td.l0 { $styles[0] }');
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$win.document.writeln('td.l1 { $styles[1] }');
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$win.document.writeln('td.l2 { $styles[2] }');
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$win.document.writeln('td.l3 { $styles[3] }');
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$win.document.writeln('td.l4 { $styles[4] }');
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$win.document.writeln('td.l5 { $styles[5] }');
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$win.document.writeln('td.l6 { $styles[6] }');
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$win.document.writeln('td.l7 { $styles[7] }');
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$win.document.writeln('</style>');
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$win.document.writeln('</head>');
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$win.document.writeln('<body>');
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$win.document.writeln('<table border="0" cellpadding="2" cellspacing="0">');
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$win.document.writeln('<tr><th>Time</th>');
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$identHeader
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$win.document.writeln('<th>Priority</th><th width="100%">Message</th></tr>');
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</script>
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EOT;
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$this->_opened = true;
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}
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return $this->_opened;
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}
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/**
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* Closes the output stream if it is open. If there are still pending
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* lines in the output buffer, the output window will be opened so that
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* the buffer can be drained.
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*
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* @access public
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*/
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function close()
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{
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/*
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* If there are still lines waiting to be written, open the output
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* window so that we can drain the buffer.
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*/
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if (!$this->_opened && (count($this->_buffer) > 0)) {
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$this->open();
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}
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if ($this->_opened) {
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$this->_writeln('</table>');
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$this->_writeln('</body></html>');
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$this->_opened = false;
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}
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return ($this->_opened === false);
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}
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/**
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* Writes a single line of text to the output window.
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*
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* @param string $line The line of text to write.
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*
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* @access private
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*/
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function _writeln($line)
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{
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/* Add this line to our output buffer. */
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$this->_buffer[] = $line;
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/* Buffer the output until this page's headers have been sent. */
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if (!headers_sent()) {
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return;
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}
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/* If we haven't already opened the output window, do so now. */
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if (!$this->_opened && !$this->open()) {
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return false;
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}
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/* Drain the buffer to the output window. */
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$win = $this->_name;
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foreach ($this->_buffer as $line) {
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echo "<script language='JavaScript'>\n";
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echo "$win.document.writeln('" . addslashes($line) . "');\n";
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echo "self.focus();\n";
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echo "</script>\n";
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}
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/* Now that the buffer has been drained, clear it. */
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$this->_buffer = array();
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}
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/**
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* Logs $message to the output window. The message is also passed along
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* to any Log_observer instances that are observing this Log.
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*
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* @param mixed $message String or object containing the message to log.
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* @param string $priority The priority of the message. Valid
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* values are: PEAR_LOG_EMERG, PEAR_LOG_ALERT,
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* PEAR_LOG_CRIT, PEAR_LOG_ERR, PEAR_LOG_WARNING,
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* PEAR_LOG_NOTICE, PEAR_LOG_INFO, and PEAR_LOG_DEBUG.
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* @return boolean True on success or false on failure.
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* @access public
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*/
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function log($message, $priority = null)
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{
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/* If a priority hasn't been specified, use the default value. */
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if ($priority === null) {
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$priority = $this->_priority;
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}
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/* Abort early if the priority is above the maximum logging level. */
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if (!$this->_isMasked($priority)) {
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return false;
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}
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/* Extract the string representation of the message. */
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$message = $this->_extractMessage($message);
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$message = preg_replace('/\r\n|\n|\r/', '<br />', $message);
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list($usec, $sec) = explode(' ', microtime());
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/* Build the output line that contains the log entry row. */
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$line = '<tr>';
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$line .= sprintf('<td>%s.%s</td>',
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strftime('%H:%M:%S', $sec), substr($usec, 2, 2));
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if (!empty($this->_ident)) {
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$line .= '<td>' . $this->_ident . '</td>';
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}
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$line .= '<td>' . ucfirst($this->priorityToString($priority)) . '</td>';
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$line .= sprintf('<td class="l%d">%s</td>', $priority, $message);
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$line .= '</tr>';
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$this->_writeln($line);
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$this->_announce(array('priority' => $priority, 'message' => $message));
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return true;
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}
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}
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