C++ BString::Replace方法代码示例

WirelessNetworkMenuItem::WirelessNetworkMenuItem(const char* name,
	int32 signalQuality, int32 authenticationMode, BMessage* message)
	:
	BMenuItem(name, message),
	fQuality(signalQuality)
{
	// Append authentication mode to label
	BString label = B_TRANSLATE("%name% (%authenticationMode%)");
	label.Replace("%name%", name, 1);
	label.Replace("%authenticationMode%",
		AuthenticationName(authenticationMode), 1);

	SetLabel(label.String());
}

void
BContactField::_UpdateLabel(field_usage usage, BString& str)
{
	for (int i = 0; gStandardUsages[i].usage != 0; i++) {
		standardUsagesMap item = gStandardUsages[i];
		if (usage == item.usage) {
			switch (item.stringOp) {
				case 0:
				break;

				case 1:
					str.Prepend(item.label);				
				break;

				case 2:
					str.Append(item.label);
				break;
				case 3:
					if (strlen(item.replaceString) < 1)
						break;

					str.Replace(item.replaceString, item.label, 1);
				break;	
			}
		}
	}
}

void TranslateEntities(BString &str)
{
	// pointeur vers un caractère '&'
	int l_Pointer=-1;
	
	while ((l_Pointer = str.FindFirst('&',l_Pointer+1)) >= 0)
	{
		// recherche du ';' de fin
		unsigned int l_Pointer2;
		
		l_Pointer2 = str.FindFirst(';',l_Pointer);
		
		if (l_Pointer2 < 0)
			return;
			// s'il n'y a plus de ';' dans la chaîne, on peut arréter de chercher des '&', c'est fini
		
		BString l_Entity(str.String()+l_Pointer+1,l_Pointer2-l_Pointer-1);
		
		// recherche de l'entité dans la liste déclarée ci-dessus
		// on procède par dichotomie pour trouver la chaîne
		unsigned int l_Start = 0;
		unsigned int l_End = c_NumEntities;
		unsigned int l_StringIndex;

		while(l_Start != l_End)
		{
			// on regarde ce qu'il y a au milieu
			l_StringIndex = (l_End+l_Start)/2;
			
			int l_Comp = l_Entity.Compare(s_EntityNames[l_StringIndex]);
		
			if (l_Comp == 0)
			{
				l_Entity.Prepend("&");
				l_Entity.Append(";");
				str.Replace(l_Entity.String(),s_EntityCharacters[l_StringIndex],1,l_Pointer);
				break;	
			}			
			if (l_Comp>0)
				// la chaîne à chercher est après
				l_Start = ++l_StringIndex;
			else
				// la chaîne à chercher est avant
				l_End = l_StringIndex;
		}		
	}
}

status_t
BEmailMessage::RenderTo(BDirectory *dir, BEntry *msg)
{
	time_t currentTime;
	char numericDateString [40];
	struct tm timeFields;
	BString worker;

	// Generate a file name for the outgoing message.  See also
	// FolderFilter::ProcessMailMessage which does something similar for
	// incoming messages.

	BString name = Subject();
	SubjectToThread (name); // Extract the core subject words.
	if (name.Length() <= 0)
		name = "No Subject";
	if (name[0] == '.')
		name.Prepend ("_"); // Avoid hidden files, starting with a dot.

	// Convert the date into a year-month-day fixed digit width format, so that
	// sorting by file name will give all the messages with the same subject in
	// order of date.
	time (&currentTime);
	localtime_r (&currentTime, &timeFields);
	sprintf (numericDateString, "%04d%02d%02d%02d%02d%02d",
		timeFields.tm_year + 1900,
		timeFields.tm_mon + 1,
		timeFields.tm_mday,
		timeFields.tm_hour,
		timeFields.tm_min,
		timeFields.tm_sec);
	name << " " << numericDateString;

	worker = From();
	extract_address_name(worker);
	name << " " << worker;

	name.Truncate(222);	// reserve space for the uniquer

	// Get rid of annoying characters which are hard to use in the shell.
	name.ReplaceAll('/','_');
	name.ReplaceAll('\'','_');
	name.ReplaceAll('"','_');
	name.ReplaceAll('!','_');
	name.ReplaceAll('<','_');
	name.ReplaceAll('>','_');
	while (name.FindFirst("  ") >= 0) // Remove multiple spaces.
		name.Replace("  " /* Old */, " " /* New */, 1024 /* Count */);

	int32 uniquer = time(NULL);
	worker = name;

	int32 tries = 30;
	bool exists;
	while ((exists = dir->Contains(worker.String())) && --tries > 0) {
		srand(rand());
		uniquer += (rand() >> 16) - 16384;

		worker = name;
		worker << ' ' << uniquer;
	}

	if (exists)
		printf("could not create mail! (should be: %s)\n", worker.String());

	BFile file;
	status_t status = dir->CreateFile(worker.String(), &file);
	if (status < B_OK)
		return status;

	if (msg != NULL)
		msg->SetTo(dir,worker.String());

	return RenderToRFC822(&file);
}

status_t
TimeFormat(BString &string, int32 index, FormatSeparator separator,
	DateOrder order, bool clockIs24Hour)
{
	if (index >= 6)
		return B_ERROR;

	BString clockString;
	BString dateString;

	if (index <= 1)
		if (clockIs24Hour)
			clockString = "%H:%M:%S";
		else
			clockString = "%I:%M:%S %p";
	else
		if (clockIs24Hour)
			clockString = "%H:%M";
		else
			clockString = "%I:%M %p";

	if (index <= 3) {
		switch (order) {
			case kYMDFormat:
				dateString = "%Y %! %d";
				break;
			case kDMYFormat:
				dateString = "%d %! %Y";
				break;
			case kMDYFormat:
				// Fall through
			case kDateFormatEnd:
				// Fall through
			default:
				dateString = "%! %d %Y";
				break;
		}
		if (index == 0)
			dateString.Replace('!', 'B', 1);
		else
			dateString.Replace('!', 'b', 1);
	} else {
		switch (order) {
			case kYMDFormat:
				dateString = "%y!%m!%d";
				break;
			case kDMYFormat:
				dateString = "%d!%m!%y";
				break;
			case kMDYFormat:
				// Fall through
			case kDateFormatEnd:
				// Fall through
			default:
				dateString = "%m!%d!%y";
				break;
		}

		char separatorArray[] = {' ', '-', '/', '\\', '.'};

		if (separator == kNoSeparator)
			dateString.ReplaceAll("!", "");
		else
			dateString.ReplaceAll('!', separatorArray[separator-1]);
	}

	if (index == 0)
		string = "%A, ";
	else if (index < 3)
		string = "%a, ";
	else
		string = "";

	string << dateString;

	if (index < 5)
		string << ", " << clockString;

	return B_OK;
}