C++ BString::ReplaceSet方法代码示例

void 
Message::Draw(BView *view, int32 frame)
{
	if (view == NULL || view->Window() == NULL || !view->Window()->IsLocked())
		return;

	BScreen screen(view->Window());
	if (!screen.IsValid())
		return;

	// Double-buffered drawing
	BBitmap buffer(view->Bounds(), screen.ColorSpace(), true);
	if (buffer.InitCheck() != B_OK)
		return;

	BView offscreen(view->Bounds(), NULL, 0, 0);
	buffer.AddChild(&offscreen);
	buffer.Lock();

	// Set up the colors
	rgb_color base_color = {(uint8)(rand() % 25), (uint8)(rand() % 25),
		(uint8)(rand() % 25)};
	offscreen.SetHighColor(base_color); 
	offscreen.SetLowColor(tint_color(base_color, 0.815F));
	offscreen.FillRect(offscreen.Bounds(), kCheckered);
	rgb_color colors[8] = {
		tint_color(base_color, B_LIGHTEN_1_TINT),
		tint_color(base_color, 0.795F),
		tint_color(base_color, 0.851F),
		tint_color(base_color, 0.926F),
		tint_color(base_color, 1.05F),
		tint_color(base_color, B_DARKEN_1_TINT),
		tint_color(base_color, B_DARKEN_2_TINT),
		tint_color(base_color, B_DARKEN_3_TINT),
	};

	offscreen.SetDrawingMode(B_OP_OVER);

	// Set the basic font parameters, including random font family
	BFont font;
	offscreen.GetFont(&font);
	font.SetFace(B_BOLD_FACE);
	font.SetFamilyAndStyle(*(fFontFamilies.ItemAt(rand() % fFontFamilies.CountItems())), NULL);
	offscreen.SetFont(&font);

	// Get the message
	BString *message = get_message();
	BString *origMessage = new BString();
	message->CopyInto(*origMessage, 0, message->Length());
	// Replace newlines and tabs with spaces
	message->ReplaceSet("\n\t", ' ');

	int height = (int) offscreen.Bounds().Height();
	int width = (int) offscreen.Bounds().Width();

	// From 14 to 22 iterations
	int32 iterations = (rand() % 8) + 14;
	for (int32 i = 0; i < iterations; i++) {
		// Randomly set font size and shear
		BFont font;
		offscreen.GetFont(&font);
		float fontSize = ((rand() % 320) + 42) * fScaleFactor;
		font.SetSize(fontSize);
		// Set the shear off 90 about 1/2 of the time
		if (rand() % 2 == 1)
			font.SetShear((float) ((rand() % 135) + (rand() % 45)));
		else
			font.SetShear(90.0);
		offscreen.SetFont(&font);

		// Randomly set drawing location
		int x = (rand() % width) - (rand() % width/((rand() % 8)+1));
		int y = rand() % height;

		// Draw new text
		offscreen.SetHighColor(colors[rand() % 8]);
		int strLength = message->Length();
		// See how wide this string is with the current font
		float strWidth = offscreen.StringWidth(message->String());
		int drawingLength = (int) (strLength * (width / strWidth));
		int start = 0;
		if (drawingLength >= strLength)
			drawingLength = strLength;
		else
			start = rand() % (strLength - drawingLength);
		char *toDraw = new char[drawingLength+1];
		strncpy(toDraw, message->String()+start, drawingLength);
		toDraw[drawingLength] = 0;
		offscreen.DrawString(toDraw, BPoint(x, y));
		delete[] toDraw;
	}

	// Now draw the full message in a nice translucent box, but only
	// if this isn't preview mode
	if (!fPreview) {
		BFont font(be_fixed_font);
		font.SetSize(14.0); 
		offscreen.SetFont(&font);
		font_height fontHeight;
		font.GetHeight(&fontHeight);
//.........这里部分代码省略.........

status_t
CDDBDaemon::_WriteCDData(dev_t device, QueryResponseData* diskData,
	ReadResponseData* readResponse)
{
	// Rename volume.
	BVolume volume(device);
	
	status_t result;
	status_t error = B_OK;
	
	BString name = diskData->artist << " - " << diskData->title;
	name.ReplaceSet("/", " ");
	
	if ((result = volume.SetName(name.String())) != B_OK) {
		printf("Can't set volume name.\n");
		return result;
	}
	
	// Rename tracks and add relevant Audio attributes.	
	BDirectory cddaRoot;
	volume.GetRootDirectory(&cddaRoot);
	
	BEntry entry;
	int index = 0;
	while (cddaRoot.GetNextEntry(&entry) == B_OK) {
		TrackData* data = (TrackData*)((readResponse->tracks).ItemAt(index));
		
		// Update name.
		name = data->title;
		name.ReplaceSet("/", " ");
		
		if ((result = entry.Rename(name.String())) != B_OK) {
			printf("Failed renaming entry at index %d to \"%s\".\n", index,
				name.String());
			error = result;
				// User can benefit from continuing through all tracks.
				// Report error later.
		}
		
		// Add relevant attributes. We consider an error here as non-fatal.
		BNode node(&entry);
		node.WriteAttr("Audio:Title", B_STRING_TYPE, 0, (data->title).String(),
			(data->title).Length());
		node.WriteAttr("Audio:Album", B_STRING_TYPE, 0,
			(readResponse->title).String(),
			(readResponse->title).Length());
		node.WriteAttr("Audio:Genre", B_STRING_TYPE, 0,
			(readResponse->genre).String(),
			(readResponse->genre).Length());
		node.WriteAttr("Audio:Year", B_INT32_TYPE, 0, &(readResponse->year),
			sizeof(int32));

		if (data->artist == "") {
			node.WriteAttr("Audio:Artist", B_STRING_TYPE, 0,
				(readResponse->artist).String(),
				(readResponse->artist).Length());
		} else {
			node.WriteAttr("Audio:Artist", B_STRING_TYPE, 0,
				(data->artist).String(), (data->artist).Length());			
		}
			
		index++;
	}
	
	return error;
}	

status_t
CDDBLookup::_WriteCDData(dev_t device, const QueryResponseData& diskData,
	const ReadResponseData& readResponse)
{
	// Rename volume.
	BVolume volume(device);

	status_t error = B_OK;

	BString name = diskData.artist;
	name += " - ";
	name += diskData.title;
	name.ReplaceSet("/", " ");

	status_t result = volume.SetName(name.String());
	if (result != B_OK) {
		printf("Can't set volume name.\n");
		return result;
	}

	// Rename tracks and add relevant Audio attributes.
	BDirectory cddaRoot;
	volume.GetRootDirectory(&cddaRoot);

	BEntry entry;
	int index = 0;
	while (cddaRoot.GetNextEntry(&entry) == B_OK) {
		TrackData* track = readResponse.tracks.ItemAt(index);

		// Update name.
		int trackNum = index + 1; // index=0 is actually Track 1
		name.SetToFormat("%02d %s.wav", trackNum, track->title.String());
		name.ReplaceSet("/", " ");

		result = entry.Rename(name.String());
		if (result != B_OK) {
			fprintf(stderr, "%s: Failed renaming entry at index %d to "
				"\"%s\".\n", kProgramName, index, name.String());
			error = result;
				// User can benefit from continuing through all tracks.
				// Report error later.
		}

		// Add relevant attributes. We consider an error here as non-fatal.
		BNode node(&entry);
		node.WriteAttrString("Media:Title", &track->title);
		node.WriteAttrString("Audio:Album", &readResponse.title);
		if (readResponse.genre.Length() != 0)
			node.WriteAttrString("Media:Genre", &readResponse.genre);
		if (readResponse.year != 0) {
			node.WriteAttr("Media:Year", B_INT32_TYPE, 0,
				&readResponse.year, sizeof(int32));
		}

		if (track->artist == "")
			node.WriteAttrString("Audio:Artist", &readResponse.artist);
		else
			node.WriteAttrString("Audio:Artist", &track->artist);

		index++;
	}

	return error;
}