added bar task

2 files changed, 186 insertions, 0 deletions

diff --git a/Sem. 11/Examples/Bar/MyString/MyString.cpp b/Sem. 11/Examples/Bar/MyString/MyString.cpp
new file mode 100644
index 0000000..3e60278
--- /dev/null
+++ b/Sem. 11/Examples/Bar/MyString/MyString.cpp
@@ -0,0 +1,142 @@
+#include "MyString.h"
+#include <cstring>
+#include <iostream>
+
+void MyString::copyFrom(const MyString& other)
+{
+	str = new char[strlen(other.str) + 1];
+	strcpy(str, other.str);
+	size = other.size;
+}
+void MyString::free()
+{
+	delete[] str;
+}
+
+MyString::MyString()
+{
+	str = new char[1];
+	str[0] = '\0';
+	size = 0;
+}
+
+MyString::MyString(const char* data)
+{
+	if(data == nullptr)
+	{
+		str = new char[1];
+		str[0] = '\0';
+		size = 0;
+	}
+	else
+	{
+		size = strlen(data);
+		str = new char[size + 1];
+		strcpy(str, data);
+	}
+}
+
+MyString::MyString(const MyString& other)
+{
+	copyFrom(other);
+}
+MyString& MyString::operator=(const MyString& other)
+{
+	if (this != &other)
+	{
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+MyString::~MyString()
+{
+	free();
+}
+
+
+size_t MyString::getSize() const
+{
+	return size;
+}
+void MyString::concat(const MyString& other)
+{
+	char* temp = new char[getSize() + other.getSize() + 1];
+	strcpy(temp, str);
+	strcat(temp, other.str);
+
+	delete[] str;
+	str = temp;
+	size = size + other.getSize();
+}
+
+const char* MyString::c_str() const
+{
+	return str;
+}
+
+MyString& MyString::operator+=(const MyString& other)
+{
+	concat(other);
+	return *this;
+}
+
+MyString operator+(const MyString& lhs, const MyString& rhs)
+{
+	MyString copyOfLeft(lhs);
+	copyOfLeft += rhs;
+	return copyOfLeft;
+}
+
+std::ostream& operator<<(std::ostream& stream, const MyString& str)
+{
+	stream << str.str;
+	return stream;
+}
+
+std::istream& operator>>(std::istream& stream, MyString& str)
+{
+	delete[] str.str;
+	char buff[1024];
+	stream >> buff;
+
+	str.size = strlen(buff);
+	str.str = new char[str.size + 1];
+	strcpy(str.str, buff);
+
+	return stream;
+}
+
+bool operator==(const MyString& lhs, const MyString& rhs)
+{
+	return strcmp(lhs.c_str(), rhs.c_str()) == 0;
+}
+bool operator<=(const MyString& lhs, const MyString& rhs)
+{
+	return strcmp(lhs.c_str(), rhs.c_str()) <= 0;
+
+}
+bool operator<(const MyString& lhs, const MyString& rhs)
+{
+	return strcmp(lhs.c_str(), rhs.c_str()) < 0;
+
+}
+
+MyString::MyString(MyString&& otherString)
+{
+	str = otherString.str;
+	size = otherString.size;
+	otherString.str = nullptr;
+}
+
+MyString& MyString::operator=(MyString&& otherString)
+{
+	if (this != &otherString)
+	{
+		free();
+		str = otherString.str;
+		otherString.str = nullptr;
+		size = otherString.size;
+	}
+	return *this;
+}
diff --git a/Sem. 11/Examples/Bar/MyString/MyString.h b/Sem. 11/Examples/Bar/MyString/MyString.h
new file mode 100644
index 0000000..b37733a
--- /dev/null
+++ b/Sem. 11/Examples/Bar/MyString/MyString.h
@@ -0,0 +1,44 @@
+#pragma once
+
+#include <fstream>
+class MyString
+{
+	char* str;
+	size_t size;
+
+	void copyFrom(const MyString& other);
+	void free();
+
+public:
+	MyString();
+	MyString(const char*);
+
+	MyString(const MyString&);
+	
+	MyString(MyString&&); //move constructor that accepts rvalue;
+
+	MyString& operator=(const MyString& other);
+	MyString& operator=(MyString&& other);  //move op= that accepts rvalue;
+
+	~MyString();
+
+	size_t getSize() const;
+	void concat(const MyString& other);
+
+	const char* c_str() const;
+
+	MyString& operator+=(const MyString& other);
+
+	friend std::ostream& operator<<(std::ostream& stream, const MyString& str);
+	friend std::istream& operator>>(std::istream& stream, MyString& str);
+
+};
+
+MyString operator+(const MyString& lhs, const MyString& rhs);
+
+bool operator==(const MyString& lhs, const MyString& rhs);
+bool operator<=(const MyString& lhs, const MyString& rhs);
+bool operator<(const MyString& lhs, const MyString& rhs);
+
+
+//MyString name = "sdfsdf"
\ No newline at end of file