Added files from project 1 (mirror)

2 files changed, 233 insertions, 0 deletions

diff --git a/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.cpp b/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.cpp
new file mode 100644
index 0000000..7c8f4d9
--- /dev/null
+++ b/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.cpp
@@ -0,0 +1,174 @@
+#include "Date.h"
+#include <cstring>
+
+/* Private */
+
+bool Date::isLeapYear() {
+	// Implements https://en.wikipedia.org/wiki/Leap_year#Gregorian_calendar
+	return year % 400 == 0 || year % 100 != 0 || year % 4 == 0;
+}
+
+unsigned short Date::daysInMonth() {
+	if (month == 2)
+		return 28 + isLeapYear();
+	if (month <= 7)
+		return 30 + month % 2;
+	return 31 - month % 2;
+}
+
+/* Public */
+
+Date::Date() : Date(01, 05, 2022) {}
+
+/*! \param str C-style string
+ *
+ * Values are initialized with zeroes. Then it parses the string:
+ *
+ * Skips spaces, saves day with atoi, skips two characters,
+ * skips spaces, saves month with atoi, skips two characters,
+ * skips spaces, saves year with atoi.
+ *
+ * Values are validated with setters.
+ * You should always have spaces between day, month and year and no non-numeric characters between them.
+ *
+ * \remark If there are non-numeric characters, as per atoi() spec, the appropriate property is zero.
+ */
+Date::Date(const char* str) : Date(0, 0, 0) {
+	while (*str == ' ' && *str != '\0') str++;
+	set_day(atoi(str));
+	str += 2;
+	while (*str == ' ' && *str != '\0') str++;
+	set_month(atoi(str));
+	str += 2;
+	while (*str == ' ' && *str != '\0') str++;
+	set_year(atoi(str));
+}
+
+/*!
+ * Initializes values with zeroes and then uses setters to save the function arguments.
+ */
+Date::Date(unsigned short day, unsigned short month, unsigned short year) {
+	this->day = this->month = this->year = 0;
+	set_day(day);
+	set_month(month);
+	set_year(year);
+}
+
+unsigned short Date::get_day() const {
+	return day;
+}
+
+/*! \return Whether newDay was saved or not
+ *
+ * If newDay is equal to 0, or is more than the appropriate days in the month, the day isn't set.
+ */
+bool Date::set_day(unsigned short newDay) {
+	if (newDay == 0 || newDay > daysInMonth())
+		return false;
+	day = newDay;
+	return true;
+}
+
+unsigned short Date::get_month() const {
+	return month;
+}
+
+/*! \return Whether newMonth was saved or not
+ *
+ * If newMonth is equal to 0 or is more than 12, the month isn't set.
+ */
+bool Date::set_month(unsigned short newMonth) {
+	if (newMonth == 0 || newMonth > 12)
+		return false;
+	month = newMonth;
+	return true;
+}
+
+unsigned short Date::get_year() const {
+	return year;
+}
+
+/*! \return Whether year was saved or not
+ *
+ * Year isn't set when newYear is zero
+ */
+bool Date::set_year(unsigned short newYear) {
+	if (newYear == 0)
+		return false;
+	year = newYear;
+	return true;
+}
+
+int digitToChar(unsigned digit) {
+	if (digit <= 9)
+		return '0' + digit;
+	return ' ';
+}
+
+/*! \return String object in the format "day.month.year"
+ *
+ * \note Currently there isn't any way to change the formatting
+ */
+String Date::createString() const {
+	String out;
+	return ((((out += day) += ".") += month) += ".") += year;
+}
+
+/*! \param istr An input stream
+ *
+ * Directly reads bytes from stream (calls read() function).
+ * 
+ * \remark Doesn't alter the stream in any other way.
+ * \note Best used with binary ifstream
+ */
+void Date::read(std::istream& istr) {
+	istr.read((char*)&day, sizeof(day));
+	istr.read((char*)&month, sizeof(month));
+	istr.read((char*)&year, sizeof(year));
+}
+
+/*! \param ostr An output stream
+ *
+ * Directly writes bytes to stream (calls write() function).
+ * 
+ * \remark Doesn't alter the stream in any other way.
+ * \note Best used with binary ofstream
+ */
+void Date::write(std::ostream& ostr) {
+	ostr.write((char*)&day, sizeof(day));
+	ostr.write((char*)&month, sizeof(month));
+	ostr.write((char*)&year, sizeof(year));
+}
+
+/*! \returns -1 if this < other, 1 if this > other, 0 if this == other
+ */
+int Date::compare(const Date& other) const {
+	if (year < other.year || month < other.month || day < other.day)
+		return -1;
+	return year > other.year || month > other.month || day > other.day;
+}
+
+
+/* Outside of class */
+
+/*!
+ * Uses the stream's >> operator to read and parse the day, month and year.
+ *
+ * \note Best used with std::cin or text std::ifstream
+ */
+std::istream& operator>>(std::istream& istr, Date& dt) {
+	unsigned short d, M, y;
+	istr >> d >> M >> y;
+	dt = Date(d, M, y);
+	return istr;
+}
+
+/*!
+ * Uses the stream's << operator to write the date in the format "day.month.year"
+ *
+ * \note Best used with std::cout or text std::ofstream
+ */
+std::ostream& operator<<(std::ostream& ostr, const Date& dt) {
+	ostr << dt.get_day() << "." << dt.get_month() << "." << dt.get_year();
+	return ostr;
+}
diff --git a/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.h b/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.h
new file mode 100644
index 0000000..89cc89c
--- /dev/null
+++ b/Year 1/Object-oriented Programming/Project 1/src/Generic/Date/Date.h
@@ -0,0 +1,59 @@
+#ifndef HEADER_DATE
+#define HEADER_DATE
+
+/*! \file Date.h
+ *  \brief Stores the declaration of class Date
+ */
+
+#include <istream>
+#include <ostream>
+#include "../String/String.h"
+
+/*! \brief Stores a day, month and year
+ */
+class Date {
+	unsigned short day;
+	unsigned short month;
+	unsigned short year;
+
+	bool isLeapYear();
+	unsigned short daysInMonth();
+
+public:
+	//! Sets date as 01 May 2022
+	Date();
+	//! Parses string
+	Date(const char* str);
+	//! Sets day, month and year
+	Date(unsigned short day, unsigned short month, unsigned short year);
+
+	//! Returns the day
+	unsigned short get_day() const;
+	//! Sets the day
+	bool set_day(unsigned short day);
+	//! Returns the month
+	unsigned short get_month() const;
+	//! Sets the month
+	bool set_month(unsigned short month);
+	//! Returns the year
+	unsigned short get_year() const;
+	//! Sets the year
+	bool set_year(unsigned short year);
+
+	//! Returns the date as a String object
+	String createString() const;
+
+	//! Reads date from stream
+	void read(std::istream& istr);
+	//! Writes date to stream
+	void write(std::ostream& ostr);
+	//! Compares two dates
+	int compare(const Date& other) const;
+};
+
+//! Reads date from stream with >> operator
+std::istream& operator>>(std::istream& istr, Date& dt);
+//! Writes date to stream with << operator
+std::ostream& operator<<(std::ostream& ostr, const Date& dt);
+
+#endif