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Diffstat (limited to 'inc/Log/file.php')
| -rwxr-xr-x | inc/Log/file.php | 286 |
1 files changed, 286 insertions, 0 deletions
diff --git a/inc/Log/file.php b/inc/Log/file.php new file mode 100755 index 00000000000..36f30b42978 --- /dev/null +++ b/inc/Log/file.php @@ -0,0 +1,286 @@ +<?php +/** + * $Header: /repository/pear/Log/Log/file.php,v 1.37 2004/01/19 08:02:40 jon Exp $ + * + * @version $Revision: 1.37 $ + * @package Log + */ + +/** + * The Log_file class is a concrete implementation of the Log abstract + * class that logs messages to a text file. + * + * @author Jon Parise <jon@php.net> + * @author Roman Neuhauser <neuhauser@bellavista.cz> + * @since Log 1.0 + * @package Log + * + * @example file.php Using the file handler. + */ +class Log_file extends Log +{ + /** + * String containing the name of the log file. + * @var string + * @access private + */ + var $_filename = 'php.log'; + + /** + * Handle to the log file. + * @var resource + * @access private + */ + var $_fp = false; + + /** + * Should new log entries be append to an existing log file, or should the + * a new log file overwrite an existing one? + * @var boolean + * @access private + */ + var $_append = true; + + /** + * Integer (in octal) containing the log file's permissions mode. + * @var integer + * @access private + */ + var $_mode = 0644; + + /** + * String containing the format of a log line. + * @var string + * @access private + */ + var $_lineFormat = '%1$s %2$s [%3$s] %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'; + + /** + * Hash that maps canonical format keys to position arguments for the + * "line format" string. + * @var array + * @access private + */ + var $_formatMap = array('%{timestamp}' => '%1$s', + '%{ident}' => '%2$s', + '%{priority}' => '%3$s', + '%{message}' => '%4$s', + '%\{' => '%%{'); + + /** + * String containing the end-on-line character sequence. + * @var string + * @access private + */ + var $_eol = "\n"; + + /** + * Constructs a new Log_file object. + * + * @param string $name Ignored. + * @param string $ident The identity string. + * @param array $conf The configuration array. + * @param int $level Log messages up to and including this level. + * @access public + */ + function Log_file($name, $ident = '', $conf = array(), + $level = PEAR_LOG_DEBUG) + { + $this->_id = md5(microtime()); + $this->_filename = $name; + $this->_ident = $ident; + $this->_mask = Log::UPTO($level); + + if (isset($conf['append'])) { + $this->_append = $conf['append']; + } + + if (!empty($conf['mode'])) { + $this->_mode = $conf['mode']; + } + + if (!empty($conf['lineFormat'])) { + $this->_lineFormat = str_replace(array_keys($this->_formatMap), + array_values($this->_formatMap), + $conf['lineFormat']); + } + + if (!empty($conf['timeFormat'])) { + $this->_timeFormat = $conf['timeFormat']; + } + + if (!empty($conf['eol'])) { + $this->_eol = $conf['eol']; + } else { + $this->_eol = (strstr(PHP_OS, 'WIN')) ? "\r\n" : "\n"; + } + + register_shutdown_function(array(&$this, '_Log_file')); + } + + /** + * Destructor + */ + function _Log_file() + { + if ($this->_opened) { + $this->close(); + } + } + + /** + * Creates the given directory path. If the parent directories don't + * already exist, they will be created, too. + * + * @param string $path The full directory path to create. + * @param integer $mode The permissions mode with which the + * directories will be created. + * + * @return True if the full path is successfully created or already + * exists. + * + * @access private + */ + function _mkpath($path, $mode = 0700) + { + static $depth = 0; + + /* Guard against potentially infinite recursion. */ + if ($depth++ > 25) { + trigger_error("_mkpath(): Maximum recursion depth (25) exceeded", + E_USER_WARNING); + return false; + } + + /* We're only interested in the directory component of the path. */ + $path = dirname($path); + + /* If the directory already exists, return success immediately. */ + if (is_dir($path)) { + $depth = 0; + return true; + } + + /* + * In order to understand recursion, you must first understand + * recursion ... + */ + if ($this->_mkpath($path, $mode) === false) { + return false; + } + + return @mkdir($path, $mode); + } + + /** + * Opens the log file for output. If the specified log file does not + * already exist, it will be created. By default, new log entries are + * appended to the end of the log file. + * + * This is implicitly called by log(), if necessary. + * + * @access public + */ + function open() + { + if (!$this->_opened) { + /* If the log file's directory doesn't exist, create it. */ + if (!is_dir(dirname($this->_filename))) { + $this->_mkpath($this->_filename); + } + + /* Obtain a handle to the log file. */ + $this->_fp = fopen($this->_filename, ($this->_append) ? 'a' : 'w'); + + $this->_opened = ($this->_fp !== false); + + /* Attempt to set the log file's mode. */ + @chmod($this->_filename, $this->_mode); + } + + return $this->_opened; + } + + /** + * Closes the log file if it is open. + * + * @access public + */ + function close() + { + /* If the log file is open, close it. */ + if ($this->_opened && fclose($this->_fp)) { + $this->_opened = false; + } + + return ($this->_opened === false); + } + + /** + * Flushes all pending data to the file handle. + * + * @access public + * @since Log 1.8.2 + */ + function flush() + { + return fflush($this->_fp); + } + + /** + * 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($priority)) { + return false; + } + + /* If the log file isn't already open, open it now. */ + if (!$this->_opened && !$this->open()) { + return false; + } + + /* Extract the string representation of the message. */ + $message = $this->_extractMessage($message); + + /* Build the string containing the complete log line. */ + $line = sprintf($this->_lineFormat, strftime($this->_timeFormat), + $this->_ident, $this->priorityToString($priority), + $message) . $this->_eol; + + /* Write the log line to the log file. */ + $success = (fwrite($this->_fp, $line) !== false); + + /* Notify observers about this log message. */ + $this->_announce(array('priority' => $priority, 'message' => $message)); + + return $success; + } +} + +?> |