feat(Week07): Add solutions

1 files changed, 98 insertions, 0 deletions

diff --git a/Week07/Exercise01/String.cpp b/Week07/Exercise01/String.cpp
new file mode 100644
index 0000000..8272658
--- /dev/null
+++ b/Week07/Exercise01/String.cpp
@@ -0,0 +1,98 @@
+#include "String.h"
+#include <cstring>
+
+void String::free() {
+	delete[] str;
+}
+
+void String::copyFrom(const String& other) {
+	length = other.length;
+
+	// Не забравяме за терминиращата нула
+	str = new char[length + 1];
+	strncpy(str, other.str, length + 1);
+}
+
+void String::resize() {
+	allocated = allocated == 0 ? 8 : allocated * 2;
+	char* strLarger = new char[allocated];
+
+	memcpy(strLarger, str, length);
+	strLarger[length] = '\0';
+
+	delete[] str;
+	str = strLarger;
+}
+
+String::String() {
+	str = nullptr;
+	allocated = length = 0;
+}
+
+String::~String() {
+	free();
+}
+
+String::String(const String& other) {
+	copyFrom(other);
+}
+
+String& String::operator=(const String& other) {
+	if (this != &other) {
+		free();
+		copyFrom(other);
+	}
+	return *this;
+}
+
+String::String(String&& other) {
+	str = other.str;
+	length = other.length;
+
+	other.str = nullptr;
+	other.length = 0;
+}
+
+String& String::operator=(String&& other) {
+	if (this != &other) {
+		free();
+
+		str = other.str;
+		length = other.length;
+
+		other.str = nullptr;
+		other.length = 0;
+	}
+	return *this;
+}
+
+String::String(const char* str) {
+	length = strlen(str);
+	this->str = new char[length + 1];
+	strncpy(this->str, str, length + 1);
+}
+
+void String::Clear() {
+	free();
+	str = nullptr;
+	length = allocated = 0;
+}
+
+void String::AppendChar(char c) {
+	if (length + 1 >= allocated)
+		resize();
+	str[length++] = c;
+	str[length] = '\0';
+}
+
+bool String::EqualTo(const String& other) const {
+	return strcmp(str, other.str) == 0;
+}
+
+const char* String::GetStr() const {
+	return str;
+}
+
+unsigned String::GetLength() const {
+	return length;
+}