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<?php |
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// +-----------------------------------------------------------------------+ |
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// | Copyright (c) 2002 Richard Heyes | |
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// | All rights reserved. | |
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// | | |
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// | Redistribution and use in source and binary forms, with or without | |
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// | modification, are permitted provided that the following conditions | |
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// | are met: | |
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// | | |
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// | o Redistributions of source code must retain the above copyright | |
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// | notice, this list of conditions and the following disclaimer. | |
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// | o Redistributions in binary form must reproduce the above copyright | |
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// | notice, this list of conditions and the following disclaimer in the | |
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// | documentation and/or other materials provided with the distribution.| |
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// | o The names of the authors may not be used to endorse or promote | |
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// | products derived from this software without specific prior written | |
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// | permission. | |
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// | | |
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// | THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
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// | "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
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// | LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
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// | A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
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// | OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
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// | SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
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// | LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
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// | DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
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// | THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
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// | (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
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// | OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
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// | | |
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// +-----------------------------------------------------------------------+ |
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// | Author: Richard Heyes <richard@phpguru.org> | |
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// | Jon Parise <jon@php.net> | |
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// +-----------------------------------------------------------------------+ |
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// |
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// $Id: file.php,v 1.2 2003/02/05 21:48:31 joko Exp $ |
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|
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/** |
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* The Log_file class is a concrete implementation of the Log:: |
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* abstract class which writes message to a text file. This is based |
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* on the previous Log_file class by Jon Parise. |
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* |
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* @author Richard Heyes <richard@php.net> |
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* @version $Revision: 1.2 $ |
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* @package Log |
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*/ |
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class Log_file extends Log |
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{ |
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/** |
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* String holding the filename of the logfile. |
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* @var string |
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*/ |
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var $_filename; |
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|
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/** |
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* No idea what this does. |
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* @var string (maybe) |
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*/ |
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var $_ident; |
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|
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/** |
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* Maximum level to log |
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* @var integer |
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*/ |
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var $_maxLevel; |
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|
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/** |
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* Integer holding the file handle. |
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* @var integer |
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*/ |
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var $_fp; |
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|
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/** |
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* Integer (in octal) containing the logfile's permissions mode. |
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* @var integer |
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*/ |
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var $_mode = 0644; |
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|
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/** |
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* Array holding the lines to log |
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* @var array |
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*/ |
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var $_logLines; |
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|
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/** |
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* Boolean which if true will mean |
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* the lines are *NOT* written out. |
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*/ |
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var $_writeOut; |
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|
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/** |
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* Creates a new logfile object. |
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* |
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* @param string $name The filename of the logfile. |
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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 $maxLevel Maximum level at which to log. |
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* @access public |
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*/ |
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function Log_File($name, $ident = '', $conf = array(), $maxLevel = PEAR_LOG_DEBUG) |
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{ |
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/* If a file mode has been provided, use it. */ |
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if (!empty($conf['mode'])) { |
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$this->_mode = $conf['mode']; |
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} |
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|
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if (!file_exists($name)) { |
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touch($name); |
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chmod($name, $this->_mode); |
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} |
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|
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$this->_filename = realpath($name); |
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$this->_ident = $ident; |
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$this->_maxLevel = $maxLevel; |
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|
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$this->_logLines = array(); |
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$this->_writeOut = true; |
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|
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$this->_timestampFormat = '%b %d %H:%M:%S'; |
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|
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/* If a timestamp format has been provided, use it. */ |
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if (!empty($conf['timestampFormat'])) { |
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$this->_timestampFormat = $conf['timestampFormat']; |
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} |
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|
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$this->PEAR(); |
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} |
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|
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/** |
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* Destructor. This will write out any lines to the logfile, UNLESS the dontLog() |
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* method has been called, in which case it won't. |
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* |
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* @access private |
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*/ |
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function _Log_File() |
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{ |
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$this->_PEAR(); |
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|
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if (!empty($this->_logLines) AND $this->_writeOut AND $this->_openLogfile()) { |
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|
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foreach ($this->_logLines as $line) { |
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$this->_writeLine($line['message'], $line['priority'], $line['time']); |
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} |
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|
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$this->_closeLogfile(); |
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} |
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} |
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|
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/** |
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* Adds a line to be logged. Adds it to the internal array and will only |
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* get written out when the destructor is called. |
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* |
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* @param string $message The textual message to be logged. |
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* @param string $priority The priority of the message. Valid |
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* values are: PEAR_LOG_EMERG, PEAR_LOG_ALERT, PEAR_LOG_CRIT, |
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* PEAR_LOG_ERR, PEAR_LOG_WARNING, PEAR_LOG_NOTICE, PEAR_LOG_INFO, and |
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* PEAR_LOG_DEBUG. The default is PEAR_LOG_INFO. |
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* @return boolean True on success or false on failure. |
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* @access public |
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*/ |
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function log($message, $priority = PEAR_LOG_INFO) |
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{ |
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// Abort early if the priority is above the maximum logging level. |
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if ($priority > $this->_maxLevel) { |
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return false; |
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} |
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|
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// Add to loglines array |
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$this->_logLines[] = array('message' => $message, 'priority' => $priority, 'time' => strftime($this->_timestampFormat)); |
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|
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// Notify observers |
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$this->notifyAll(array('message' => $message, 'priority' => $priority)); |
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|
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return true; |
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} |
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|
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/** |
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* This function will prevent the destructor from logging. |
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* |
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* @access public |
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*/ |
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function dontLog() |
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{ |
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$this->_writeOut = false; |
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} |
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|
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/** |
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* Function to force writing out of log *now*. Will clear the queue. |
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* Using this function does not cancel the writeout in the destructor. |
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* Handy for long running processes. |
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* |
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* @access public |
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*/ |
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function writeOut() |
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{ |
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if (!empty($this->_logLines) AND $this->_openLogfile()) { |
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|
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foreach ($this->_logLines as $line) { |
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$this->_writeLine($line['message'], $line['priority'], $line['time']); |
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} |
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|
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$this->_logLines = array(); |
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$this->_closeLogfile(); |
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} |
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} |
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|
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/** |
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* Opens the logfile for appending. File should always exist, as |
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* constructor will create it if it doesn't. |
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* |
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* @access private |
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*/ |
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function _openLogfile() |
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{ |
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if (($this->_fp = @fopen($this->_filename, 'a')) == false) { |
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return false; |
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} |
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|
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chmod($this->_filename, $this->_mode); |
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|
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return true; |
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} |
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|
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/** |
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* Closes the logfile file pointer. |
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* |
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* @access private |
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*/ |
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function _closeLogfile() |
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{ |
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return fclose($this->_fp); |
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} |
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|
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/** |
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* Writes a line to the logfile |
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* |
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* @param string $line The line to write |
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* @param integer $priority The priority of this line/msg |
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* @return integer Number of bytes written or -1 on error |
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* @access private |
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*/ |
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function _writeLine($line, $priority, $time) |
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{ |
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return fwrite($this->_fp, sprintf("%s %s [%s] %s\r\n", $time, $this->_ident, $this->priorityToString($priority), $line)); |
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} |
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|
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} // End of class |
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?> |
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