C++ String::clear方法代码示例

Common::String getTextFromAnyVar(const Variable &from) {
	switch (from.varType) {
		case SVT_STRING:
			return from.varData.theString;

		case SVT_FASTARRAY: {
			Common::String builder = "FAST:";
			Common::String builder2 = "";
			Common::String grabText = "";

			for (int i = 0; i < from.varData.fastArray->size; i++) {
				builder2 = builder + " ";
				grabText = getTextFromAnyVar(from.varData.fastArray->fastVariables[i]);
				builder.clear();
				builder = builder2 + grabText;
			}
			return builder;
		}

		case SVT_STACK: {
			Common::String builder = "ARRAY:";
			Common::String builder2 = "";
			Common::String grabText = "";

			VariableStack *stacky = from.varData.theStack->first;

			while (stacky) {
				builder2 = builder + " ";
				grabText = getTextFromAnyVar(stacky->thisVar);
				builder.clear();
				builder = builder2 + grabText;
				stacky = stacky->next;
			}
			return builder;
		}

		case SVT_INT: {
			Common::String buff = Common::String::format("%i", from.varData.intValue);
			return buff;
		}

		case SVT_FILE: {
			return resourceNameFromNum(from.varData.intValue);
		}

		case SVT_OBJTYPE: {
			ObjectType *thisType = g_sludge->_objMan->findObjectType(from.varData.intValue);
			if (thisType)
				return thisType->screenName;
			break;
		}

		default:
			break;
	}

	return typeName[from.varType];
}

void AboutDialog::addLine(const char *str) {
	if (*str == 0) {
		_lines.push_back("");
	} else {
		Common::String format(str, 2);
		str += 2;

		static Common::String asciiStr;
		if (format[0] == 'A') {
			bool useAscii = false;
#ifdef USE_TRANSLATION
			// We could use TransMan.getCurrentCharset() but rather than compare strings
			// it is easier to use TransMan.getCharsetMapping() (non null in case of non
			// ISO-8859-1 mapping)
			useAscii = (TransMan.getCharsetMapping() != NULL);
#endif
			if (useAscii)
				asciiStr = str;
			return;
		}
		StringArray wrappedLines;
		if (!asciiStr.empty()) {
			g_gui.getFont().wordWrapText(asciiStr, _w - 2 * _xOff, wrappedLines);
			asciiStr.clear();
		} else
			g_gui.getFont().wordWrapText(str, _w - 2 * _xOff, wrappedLines);

		for (StringArray::const_iterator i = wrappedLines.begin(); i != wrappedLines.end(); ++i) {
			_lines.push_back(format + *i);
		}
	}
}

	void add(Common::String &line, int &w) {
		if (actualMaxLineWidth < w)
			actualMaxLineWidth = w;

		lines.push_back(line);

		line.clear();
		w = 0;
	}

bool SystemUI::askForSaveGameDescription(int16 slotId, Common::String &newDescription) {
	// Let user enter new description
	bool previousEditState = _text->inputGetEditStatus();
	byte previousEditCursor = _text->inputGetCursorChar();

	_text->drawMessageBox(_textSaveGameEnterDescription, 0, 31, true);

	_text->inputEditOn();

	_text->charPos_Push();
	_text->charAttrib_Push();

	_text->charPos_SetInsideWindow(3, 0);
	_text->charAttrib_Set(15, 0);
	_text->clearBlockInsideWindow(3, 0, 31, 0); // input line is supposed to be black
	_text->inputSetCursorChar('_');

	// figure out the current description of the slot
	_text->stringSet("");
	for (uint16 slotNr = 0; slotNr < _savedGameArray.size(); slotNr++) {
		if (_savedGameArray[slotNr].slotId == slotId) {
			// found slotId
			if (_savedGameArray[slotNr].isValid) {
				// and also valid, so use its description
				_text->stringSet(_savedGameArray[slotNr].description);
			}
		}
	}

	_vm->cycleInnerLoopActive(CYCLE_INNERLOOP_GETSTRING);
	_text->stringEdit(30); // only allow up to 30 characters

	_text->charAttrib_Pop();
	_text->charPos_Pop();
	_text->inputSetCursorChar(previousEditCursor);
	if (!previousEditState) {
		_text->inputEditOff();
	}

	_text->closeWindow();

	if (!_text->stringWasEntered()) {
		// User cancelled? exit now
		return false;
	}

	// Now verify that the user really wants to do this
	if (!askForSavedGameVerification(_textSaveGameVerify, _textSaveGameVerifyButton1, _textSaveGameVerifyButton2, (char *)_text->_inputString, slotId)) {
		return false;
	}

	newDescription.clear();
	newDescription += (char *)_text->_inputString;
	return true;
}

int SaveLoad::selectSaveFile(Common::String &selectedName, bool saveMode, const Common::String &caption, const Common::String &button) {
	GUI::SaveLoadChooser slc(caption, button, saveMode);

	selectedName.clear();

	int idx = slc.runModalWithCurrentTarget();
	if (idx >= 0) {
		selectedName = slc.getResultString();
	}

	return idx;
}

bool Debugger_EoB::cmd_saveOriginal(int argc, const char **argv) {
	if (!_vm->_runFlag) {
		DebugPrintf("This command doesn't work during intro or outro sequences,\nfrom the main menu or from the character generation.\n");
		return true;
	}

	Common::String dir = ConfMan.get("savepath");
	if (dir == "None")
		dir.clear();

	Common::FSNode nd(dir);
	if (!nd.isDirectory())
		return false;

	if (_vm->game() == GI_EOB1) {
		if (argc == 1) {
			if (_vm->saveAsOriginalSaveFile()) {
				Common::FSNode nf = nd.getChild(Common::String::format("EOBDATA.SAV"));
				if (nf.isReadable())
					DebugPrintf("Saved to file: %s\n\n", nf.getPath().c_str());
				else
					DebugPrintf("Failure.\n");
			} else {
				DebugPrintf("Failure.\n");
			}
		} else {
			DebugPrintf("Syntax:   save_original\n          (Saves game in original file format to a file which can be used with the orginal game executable.)\n\n");
		}
		return true;

	} else if (argc == 2) {
		int slot = atoi(argv[1]);
		if (slot < 0 || slot > 5) {
			DebugPrintf("Slot must be between (including) 0 and 5.\n");
		} else if (_vm->saveAsOriginalSaveFile(slot)) {
			Common::FSNode nf = nd.getChild(Common::String::format("EOBDATA%d.SAV", slot));
			if (nf.isReadable())
				DebugPrintf("Saved to file: %s\n\n", nf.getPath().c_str());
			else
				DebugPrintf("Failure.\n");
		} else {
			DebugPrintf("Failure.\n");
		}
		return true;
	}

	DebugPrintf("Syntax:   save_original <slot>\n          (Saves game in original file format to a file which can be used with the orginal game executable.\n          A save slot between 0 and 5 must be specified.)\n\n");
	return true;
}

bool Font::getLine(Common::String &s, int maxWidth, Common::String &line, int &width) {
	assert(maxWidth > 0);
	width = 0;
	const char *src = s.c_str();
	char c;

	while ((c = *src) != '\0') {
		if (c == '\r') {
			// End of line, so return calculated line
			line = Common::String(s.c_str(), src);
			s = Common::String(src + 1);
			return false;
		}

		++src;
		width += charWidth(c);
		if (width < maxWidth)
			continue;

		// Reached maximum allowed size
		// If this was the last character of the string, let it go
		if (*src == '\0') {
			line = Common::String(s.c_str(), src);
			s.clear();
			return true;
		}

		// Work backwards to find space at the start of the current word
		// as a point to split the line on
		while (src >= s.c_str() && *src != ' ') {
			width -= charWidth(*src);
			--src;
		}
		if (src < s.c_str())
			error("Could not fit line");

		// Split the line around the space
		line = Common::String(s.c_str(), src);
		s = Common::String(src + 1);
		return false;
	}

	// Return entire string
	line = s;
	s = Common::String();
	return true;
}

void ResourceSerializer::syncAsString32(Common::String &string) {
	if (isLoading()) {
		string.clear();

		uint32 length = _loadStream->readUint32LE();
		for (uint i = 0; i < length; i++) {
			char c = _loadStream->readByte();
			string += c;
		}

		_bytesSynced += 4 + length;
	} else {
		_saveStream->writeUint32LE(string.size());
		_saveStream->writeString(string);
		_bytesSynced += 4 + string.size();
	}
}

int SaveLoad::selectSaveFile(Common::String &selectedName, bool saveMode, const Common::String &caption, const Common::String &button) {
	GUI::SaveLoadChooser slc(caption, button);
	slc.setSaveMode(saveMode);

	selectedName.clear();

	Common::String gameId = ConfMan.get("gameid");

	const EnginePlugin *plugin = 0;
	EngineMan.findGame(gameId, &plugin);

	int idx = slc.runModalWithPluginAndTarget(plugin, ConfMan.getActiveDomainName());
	if (idx >= 0) {
		selectedName = slc.getResultString();
		slc.close();
	}

	return idx;
}

Common::Archive *ResLoaderInsMalcolm::load(Common::ArchiveMemberPtr memberFile, Common::SeekableReadStream &stream) const {
	Common::List<Common::String> filenames;
	Common::ScopedPtr<PlainArchive> result(new PlainArchive(memberFile));
	if (!result)
		return 0;

	// thanks to eriktorbjorn for this code (a bit modified though)
	stream.seek(3, SEEK_SET);

	// first file is the index table
	uint32 size = stream.readUint32LE();
	Common::String temp;

	for (uint32 i = 0; i < size; ++i) {
		byte c = stream.readByte();

		if (c == '\\') {
			temp.clear();
		} else if (c == 0x0D) {
			// line endings are CRLF
			c = stream.readByte();
			assert(c == 0x0A);
			++i;

			filenames.push_back(temp);
		} else {
			temp += (char)c;
		}
	}

	stream.seek(3, SEEK_SET);

	for (Common::List<Common::String>::iterator file = filenames.begin(); file != filenames.end(); ++file) {
		const uint32 fileSize = stream.readUint32LE();
		const uint32 fileOffset = stream.pos();

		result->addFileEntry(*file, PlainArchive::Entry(fileOffset, fileSize));
		stream.seek(fileSize, SEEK_CUR);
	}

	return result.release();
}

bool SystemUI::askForCommand(Common::String &commandText) {
	// Let user enter the command (this was originally only available for Hercules rendering, we allow it everywhere)
	bool previousEditState = _text->inputGetEditStatus();
	byte previousEditCursor = _text->inputGetCursorChar();

	_text->drawMessageBox(_textEnterCommand, 0, 36, true);

	_text->inputEditOn();

	_text->charPos_Push();
	_text->charAttrib_Push();

	_text->charPos_SetInsideWindow(2, 0);
	_text->charAttrib_Set(15, 0);
	_text->clearBlockInsideWindow(2, 0, 36, 0); // input line is supposed to be black
	_text->inputSetCursorChar('_');

	_text->stringSet(commandText.c_str()); // Set current command text (may be a command recall)

	_vm->cycleInnerLoopActive(CYCLE_INNERLOOP_GETSTRING);
	_text->stringEdit(35); // only allow up to 35 characters

	_text->charAttrib_Pop();
	_text->charPos_Pop();
	_text->inputSetCursorChar(previousEditCursor);
	if (!previousEditState) {
		_text->inputEditOff();
	}

	_text->closeWindow();

	if (!_text->stringWasEntered()) {
		// User cancelled? exit now
		return false;
	}

	commandText.clear();
	commandText += (char *)_text->_inputString;
	return true;
}

void AnimVideo::printData() {
	Anim::printData();

	debug("smackerFile: %s", _smackerFile.c_str());
	debug("size: x %d, y %d", _width, _height);

	Common::String description;
	for (uint32 i = 0; i < _positions.size(); i++) {
		description += Common::String::format("(x %d, y %d) ", _positions[i].x, _positions[i].y);
	}
	debug("positions: %s", description.c_str());

	description.clear();
	for (uint32 i = 0; i < _sizes.size(); i++) {
		description += Common::String::format("(l %d, t %d, r %d, b %d) ",
				_sizes[i].left, _sizes[i].top, _sizes[i].right, _sizes[i].bottom);
	}
	debug("sizes: %s", description.c_str());

	debug("frameRateOverride): %d", _frameRateOverride);
	debug("preload: %d", _preload);
	debug("loop: %d", _loop);
}

void GfxControls16::kernelTexteditChange(reg_t controlObject, reg_t eventObject) {
	uint16 cursorPos = readSelectorValue(_segMan, controlObject, SELECTOR(cursor));
	uint16 maxChars = readSelectorValue(_segMan, controlObject, SELECTOR(max));
	reg_t textReference = readSelector(_segMan, controlObject, SELECTOR(text));
	Common::String text;
	uint16 textSize, eventType, eventKey = 0, modifiers = 0;
	bool textChanged = false;
	bool textAddChar = false;
	Common::Rect rect;

	if (textReference.isNull())
		error("kEditControl called on object that doesnt have a text reference");
	text = _segMan->getString(textReference);

	uint16 oldCursorPos = cursorPos;

	if (!eventObject.isNull()) {
		textSize = text.size();
		eventType = readSelectorValue(_segMan, eventObject, SELECTOR(type));

		switch (eventType) {
		case SCI_EVENT_MOUSE_PRESS:
			// TODO: Implement mouse support for cursor change
			break;
		case SCI_EVENT_KEYBOARD:
			eventKey = readSelectorValue(_segMan, eventObject, SELECTOR(message));
			modifiers = readSelectorValue(_segMan, eventObject, SELECTOR(modifiers));
			switch (eventKey) {
			case SCI_KEY_BACKSPACE:
				if (cursorPos > 0) {
					cursorPos--; text.deleteChar(cursorPos);
					textChanged = true;
				}
				break;
			case SCI_KEY_DELETE:
				if (cursorPos < textSize) {
					text.deleteChar(cursorPos);
					textChanged = true;
				}
				break;
			case SCI_KEY_HOME: // HOME
				cursorPos = 0; textChanged = true;
				break;
			case SCI_KEY_END: // END
				cursorPos = textSize; textChanged = true;
				break;
			case SCI_KEY_LEFT: // LEFT
				if (cursorPos > 0) {
					cursorPos--; textChanged = true;
				}
				break;
			case SCI_KEY_RIGHT: // RIGHT
				if (cursorPos + 1 <= textSize) {
					cursorPos++; textChanged = true;
				}
				break;
			case 3:	// returned in SCI1 late and newer when Control - C is pressed
				if (modifiers & SCI_KEYMOD_CTRL) {
					// Control-C erases the whole line
					cursorPos = 0; text.clear();
					textChanged = true;
				}
				break;
			default:
				if ((modifiers & SCI_KEYMOD_CTRL) && eventKey == 99) {
					// Control-C in earlier SCI games (SCI0 - SCI1 middle)
					// Control-C erases the whole line
					cursorPos = 0; text.clear();
					textChanged = true;
				} else if (eventKey > 31 && eventKey < 256 && textSize < maxChars) {
					// insert pressed character
					textAddChar = true;
					textChanged = true;
				}
				break;
			}
			break;
		}
	}

	if (g_sci->getVocabulary() && !textChanged && oldCursorPos != cursorPos) {
		assert(!textAddChar);
		textChanged = g_sci->getVocabulary()->checkAltInput(text, cursorPos);
	}

	if (textChanged) {
		GuiResourceId oldFontId = _text16->GetFontId();
		GuiResourceId fontId = readSelectorValue(_segMan, controlObject, SELECTOR(font));
		rect = g_sci->_gfxCompare->getNSRect(controlObject);

		_text16->SetFont(fontId);
		if (textAddChar) {

			const char *textPtr = text.c_str();

			// We check if we are really able to add the new char
			uint16 textWidth = 0;
			while (*textPtr)
				textWidth += _text16->_font->getCharWidth((byte)*textPtr++);
			textWidth += _text16->_font->getCharWidth(eventKey);
//.........这里部分代码省略.........

void GfxControls32::kernelTexteditChange(reg_t controlObject) {
	SciEvent curEvent;
	uint16 maxChars = 40;	//readSelectorValue(_segMan, controlObject, SELECTOR(max));	// TODO
	reg_t textReference = readSelector(_segMan, controlObject, SELECTOR(text));
	GfxFont *font = _cache->getFont(readSelectorValue(_segMan, controlObject, SELECTOR(font)));
	Common::String text;
	uint16 textSize;
	bool textChanged = false;
	bool textAddChar = false;
	Common::Rect rect;

	if (textReference.isNull())
		error("kEditControl called on object that doesn't have a text reference");
	text = _segMan->getString(textReference);

	// TODO: Finish this
	warning("kEditText ('%s')", text.c_str());
	return;

	uint16 cursorPos = 0;
	//uint16 oldCursorPos = cursorPos;
	bool captureEvents = true;
	EventManager* eventMan = g_sci->getEventManager();

	while (captureEvents) {
		curEvent = g_sci->getEventManager()->getSciEvent(SCI_EVENT_KEYBOARD | SCI_EVENT_PEEK);

		if (curEvent.type == SCI_EVENT_NONE) {
			eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
		} else {
			textSize = text.size();

			switch (curEvent.type) {
			case SCI_EVENT_MOUSE_PRESS:
				// TODO: Implement mouse support for cursor change
				break;
			case SCI_EVENT_KEYBOARD:
				switch (curEvent.character) {
				case SCI_KEY_BACKSPACE:
					if (cursorPos > 0) {
						cursorPos--; text.deleteChar(cursorPos);
						textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_DELETE:
					if (cursorPos < textSize) {
						text.deleteChar(cursorPos);
						textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_HOME: // HOME
					cursorPos = 0; textChanged = true;
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_END: // END
					cursorPos = textSize; textChanged = true;
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_LEFT: // LEFT
					if (cursorPos > 0) {
						cursorPos--; textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_RIGHT: // RIGHT
					if (cursorPos + 1 <= textSize) {
						cursorPos++; textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case 3:	// returned in SCI1 late and newer when Control - C is pressed
					if (curEvent.modifiers & SCI_KEYMOD_CTRL) {
						// Control-C erases the whole line
						cursorPos = 0; text.clear();
						textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
					break;
				case SCI_KEY_UP:
				case SCI_KEY_DOWN:
				case SCI_KEY_ENTER:
				case SCI_KEY_ESC:
				case SCI_KEY_TAB:
				case SCI_KEY_SHIFT_TAB:
					captureEvents = false;
					break;
				default:
					if ((curEvent.modifiers & SCI_KEYMOD_CTRL) && curEvent.character == 'c') {
						// Control-C in earlier SCI games (SCI0 - SCI1 middle)
						// Control-C erases the whole line
						cursorPos = 0; text.clear();
						textChanged = true;
					} else if (curEvent.character > 31 && curEvent.character < 256 && textSize < maxChars) {
						// insert pressed character
						textAddChar = true;
						textChanged = true;
					}
					eventMan->getSciEvent(SCI_EVENT_KEYBOARD);	// consume the event
//.........这里部分代码省略.........

POSIXSaveFileManager::POSIXSaveFileManager() {
	// Register default savepath.
#if defined(SAMSUNGTV)
	ConfMan.registerDefault("savepath", "/mtd_wiselink/scummvm savegames");
#else
	Common::String savePath;

#if defined(MACOSX)
	const char *home = getenv("HOME");
	if (home && *home && strlen(home) < MAXPATHLEN) {
		savePath = home;
		savePath += "/Documents/ScummVM Savegames";

		ConfMan.registerDefault("savepath", savePath);
	}

#else
	const char *envVar;

	// Previously we placed our default savepath in HOME. If the directory
	// still exists, we will use it for backwards compatability.
	envVar = getenv("HOME");
	if (envVar && *envVar) {
		savePath = envVar;
		savePath += "/.scummvm";

		struct stat sb;
		if (stat(savePath.c_str(), &sb) != 0 || !S_ISDIR(sb.st_mode)) {
			savePath.clear();
		}
	}

	if (savePath.empty()) {
		Common::String prefix;

		// On POSIX systems we follow the XDG Base Directory Specification for
		// where to store files. The version we based our code upon can be found
		// over here: http://standards.freedesktop.org/basedir-spec/basedir-spec-0.8.html
		envVar = getenv("XDG_DATA_HOME");
		if (!envVar || !*envVar) {
			envVar = getenv("HOME");
			if (envVar && *envVar) {
				prefix = envVar;
				savePath = ".local/share/";
			}
		} else {
			prefix = envVar;
		}

		// Our default save path is '$XDG_DATA_HOME/scummvm/saves'
		savePath += "scummvm/saves";

		if (!Posix::assureDirectoryExists(savePath, prefix.c_str())) {
			savePath.clear();
		} else {
			savePath = prefix + '/' + savePath;
		}
	}

	if (!savePath.empty() && savePath.size() < MAXPATHLEN) {
		ConfMan.registerDefault("savepath", savePath);
	}
#endif

	// The user can override the savepath with the SCUMMVM_SAVEPATH
	// environment variable. This is weaker than a --savepath on the
	// command line, but overrides the default savepath.
	//
	// To ensure that the command line option (if given) has precedence,
	// we only set the value in the transient domain if it is not
	// yet present there.
	if (!ConfMan.hasKey("savepath", Common::ConfigManager::kTransientDomain)) {
		const char *dir = getenv("SCUMMVM_SAVEPATH");
		if (dir && *dir && strlen(dir) < MAXPATHLEN) {
			Common::FSNode saveDir(dir);
			if (!saveDir.exists()) {
				warning("Ignoring non-existent SCUMMVM_SAVEPATH '%s'", dir);
			} else if (!saveDir.isWritable()) {
				warning("Ignoring non-writable SCUMMVM_SAVEPATH '%s'", dir);
			} else {
				ConfMan.set("savepath", dir, Common::ConfigManager::kTransientDomain);
			}
		}
	}
#endif
}