www.pudn.com > NEROSDK5582.ZIP > AddLogLineCallback.cpp

/****************************************************************************** 
|* THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF 
|* ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
|* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A 
|* PARTICULAR PURPOSE. 
|*  
|* Copyright 1995-2002 Ahead Software AG. All Rights Reserved. 
|*----------------------------------------------------------------------------- 
|* NeroSDK / NeroCmd 
|* 
|* PROGRAM: AddLogLineCallback.cpp 
|* 
|* PURPOSE: AddLogLine callback implementation 
******************************************************************************/ 
 
 
#include "stdafx.h" 
#include "BurnContext.h" 
 
 
// This is a Nero callback. The text may cointain several lines 
// separated by newline characters: NL(LF) '\n' and is null character terminated. 
 
void NERO_CALLBACK_ATTR CBurnContext::AddLogLine (void *pUserData, NERO_TEXT_TYPE type, const char *text) 
{ 
	char * header; 
	const char *start; 
 
	// Evaluate the type of log entry that should be added 
	// and assign the line header accordingly. 
	// The line header will be attached to every output line. 
 
	switch (type) 
	{ 
		case NERO_TEXT_INFO:        // informative text 
			header = "[i]"; 
			break; 
		case NERO_TEXT_STOP:        // some operation stopped prematurely 
			header = "[#]"; 
			break; 
		case NERO_TEXT_EXCLAMATION: // important information  
			header = "[!]"; 
			break; 
		case NERO_TEXT_QUESTION:    // a question which requires an answer 
			header = "[?]"; 
			break; 
		case NERO_TEXT_DRIVE:		// a message concerning a CD-ROM drive or recorder 
			header = "[-]"; 
			break; 
		default: 
			header = ""; 
	} 
 
	// Step through the message text, considering newline characters 
	// and inserting a line break every 76 characters if the line is longer 
 
	start = text; 
	while (*start) 
	{ 
		// search for newline NL(LF) and set a pointer to the  
		// next newline character. If no newline is found end becomes NULL. 
 
		char *end = strchr (start, '\n'); 
 
		// Determine the length of the string part to be printed. 
		// If a newline character was found the length is the difference between end and start 
		// Otherwise there is no newline between the current position of start in the string 
		// and the end of the string. So the length can be determined by a simple call to strlen. 
 
		int len; 
		if (NULL != end) 
		{ 
			len = end - start; 
		} 
		else 
		{ 
			len = strlen (start); 
		} 
 
		// We also make sure that no more than 76 characters are printed 
		// no matter how long the current string part really is. 
 
		if (len > 76) 
		{ 
			len = 76; 
		} 
 
		// The formatted output: 
 
		printf ("%-4.4s%-76.76s", header, start); 
 
		// Shift the start pointer right by the amount of bytes just printed. 
 
		start += len; 
 
		// If newline characters were found start has to be set to the next character 
		// If end contains NULL this means that either no newlines were found or 
		// the end of the string has been reached. 
 
 
		if (NULL != end) 
		{ 
			++start; 
		} 
	} 
}