Logger.php

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<?php
class PHPExcel_CalcEngine_Logger {

        private $_writeDebugLog = FALSE;

        private $_echoDebugLog = FALSE;

        private $_debugLog = array();

        private $_cellStack;

        
        public function __construct(PHPExcel_CalcEngine_CyclicReferenceStack $stack) {
                $this->_cellStack = $stack;
        }

        public function setWriteDebugLog($pValue = FALSE) {
                $this->_writeDebugLog = $pValue;
        }

        public function getWriteDebugLog() {
                return $this->_writeDebugLog;
        }

        public function setEchoDebugLog($pValue = FALSE) {
                $this->_echoDebugLog = $pValue;
        }

        public function getEchoDebugLog() {
                return $this->_echoDebugLog;
        }

        public function writeDebugLog() {
                //      Only write the debug log if logging is enabled
                if ($this->_writeDebugLog) {
                        $message = implode(func_get_args());
                        $cellReference = implode(' -> ', $this->_cellStack->showStack());
                        if ($this->_echoDebugLog) {
                                echo $cellReference, 
                                        ($this->_cellStack->count() > 0 ? ' => ' : ''), 
                                        $message, 
                                        PHP_EOL;
                        }
                        $this->_debugLog[] = $cellReference . 
                                ($this->_cellStack->count() > 0 ? ' => ' : '') . 
                                $message;
                }
        }       //      function _writeDebug()

        public function clearLog() {
                $this->_debugLog = array();
        }       //      function flushLogger()

        public function getLog() {
                return $this->_debugLog;
        }       //      function flushLogger()

}       //      class PHPExcel_CalcEngine_Logger