Initial commit

engines/titanic/true_talk/tt_string.cpp

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+/* ScummVM - Graphic Adventure Engine
+ *
+ * ScummVM is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ *
+ */
+
+#include "titanic/true_talk/tt_string.h"
+#include "titanic/support/simple_file.h"
+
+namespace Titanic {
+
+TTstring::TTstring() : _status(SS_VALID) {
+	_data = new TTstringData();
+}
+
+TTstring::TTstring(const char *str) : _status(SS_VALID) {
+	_data = new TTstringData(str);
+}
+
+TTstring::TTstring(const CString &str) {
+	_status = SS_VALID;
+	_data = new TTstringData(str);
+}
+
+TTstring::TTstring(const TTstring &str) {
+	if (str._status != SS_VALID) {
+		_status = SS_5;
+		_data = nullptr;
+	} else {
+		_status = SS_VALID;
+		_data = str._data;
+		_data->_referenceCount++;
+	}
+}
+
+TTstring::~TTstring() {
+	if (_data && --_data->_referenceCount == 0)
+		delete _data;
+}
+
+void TTstring::operator=(const TTstring &str) {
+	if (&str == this)
+		// Trying to assign string to itself
+		return;
+
+	// Delete old string reference, if any
+	if (_data && --_data->_referenceCount == 0)
+		delete _data;
+
+	// Copy source string data
+	_status = str._status;
+	_data = str._data;
+	if (_data)
+		_data->_referenceCount++;
+}
+
+void TTstring::operator=(const CString &str) {
+	operator=(str.c_str());
+}
+
+void TTstring::operator=(const char *str) {
+	// Delete old string reference, if any
+	if (_data && --_data->_referenceCount == 0)
+		delete _data;
+
+	// Create new string data
+	_data = new TTstringData(str);
+	_status = SS_VALID;
+}
+
+TTstring &TTstring::operator+=(const char *str) {
+	_data->_string += str;
+	return *this;
+}
+
+TTstring &TTstring::operator+=(const TTstring &str) {
+	_data->_string += str;
+	return *this;
+}
+
+TTstring &TTstring::operator+=(char c) {
+	_data->_string += c;
+	return *this;
+}
+
+bool TTstring::operator==(const TTstring &str) const {
+	return _data && str._data && _data->_string == str._data->_string;
+}
+
+bool TTstring::operator==(const char *str) const {
+	return _data && _data->_string == str;
+}
+
+void TTstring::save(SimpleFile *file) const {
+	file->writeFormat("%s", c_str());
+}
+
+TTstring TTstring::tokenize(const char *delim) {
+	const char *strP = _data->_string.c_str();
+	const char *splitP = nullptr, *chP;
+
+	for (const char *d = delim; *d; ++d) {
+		chP = strchr(strP, *d);
+		if (chP && (splitP == nullptr || chP < splitP))
+			splitP = chP;
+	}
+
+	if (splitP) {
+		TTstring result(CString(strP, splitP));
+		_data->_string = CString(splitP + 1);
+		return result;
+	} else {
+		TTstring result(strP);
+		_data->_string = CString();
+		return result;
+	}
+}
+
+int TTstring::deletePrefix(int count) {
+	int strSize = size();
+	if (count > strSize)
+		count = strSize;
+
+	if (_data->_referenceCount == 1) {
+		// No other references to this string, so we can just directly modify it
+		_data->_string = CString(_data->_string.c_str() + count);
+	} else {
+		// Detach string from current shared data, and create a new one with the substring
+		_data->_referenceCount--;
+		_data = new TTstringData(_data->_string.c_str() + count);
+	}
+
+	return 1;
+}
+
+int TTstring::deleteSuffix(int count) {
+	int strSize = size();
+	if (count > strSize)
+		count = strSize;
+
+	CString newStr(_data->_string.c_str(), _data->_string.c_str() + strSize - count);
+	if (_data->_referenceCount == 1) {
+		// No other references to this string, so we can just directly modify it
+		_data->_string = newStr;
+	} else {
+		// Detach string from current shared data, and create a new one with the substring
+		_data->_referenceCount--;
+		_data = new TTstringData(newStr);
+	}
+
+	return 1;
+}
+
+} // End of namespace Titanic