package dt12.static_methods;
import java.text.*;
import java.util.*;
class DateUtil{
private static final String SQL_DATE_FORMAT = " yyyy-mm-dd";
private static final String RFC_1123_FORMAT = "G, dd MMM yyyy hh:mm:ss z";
private static final String RFC_3339_FORMAT = "yyyy-mm-dd'T'hh:mm:ssZ";
private DateUtil(){}
//---------------------- formatowanie dat -----------------------------
/**
* Data stosowana np. w <time></time>* @param cal - data
* @return - data w postaci sformatowaego stringu
*/
public static String formatAsRfc3339(GregorianCalendar cal) {
Date date = new Date(cal.getTimeInMillis());
Locale loc = new Locale("en_EN");
SimpleDateFormat form1 = new SimpleDateFormat(RFC_3339_FORMAT, loc);
return form1.format(date);
}
public static String formatAsRfc3339(Date date) {
Locale loc = new Locale("en_EN");
SimpleDateFormat form1 = new SimpleDateFormat(RFC_3339_FORMAT, loc);
return form1.format(date);
}
public static String formatAsRfc3339(java.sql.Date date) {
Locale loc = new Locale("en_EN");
SimpleDateFormat form1 = new SimpleDateFormat(RFC_3339_FORMAT, loc);
return form1.format(date);
}
/**
* Data stosowana np. w HTML5 meta-equiv="expires"
* @param cal - data
* @return - data w postaci sformatowaego stringu
*/
public static String formatAsRfc1123(GregorianCalendar cal) {
Date date = new Date(cal.getTimeInMillis());
SimpleDateFormat form = new SimpleDateFormat(RFC_1123_FORMAT,
new Locale("en_EN"));
return form.format(date);
}
/**
* Data stosowana np. w HTML5 meta-equiv="expires"
* @param date - data
* @return - data w postaci sformatowaego stringu
*/
public static String formatAsRfc1123(Date date) {
SimpleDateFormat form = new SimpleDateFormat(RFC_1123_FORMAT,
new Locale("en_EN"));
return form.format(date);
}
/**
* Data stosowana np. w HTML5 meta-equiv="expires"
* @param date - data
* @return - data w postaci sformatowaego stringu
*/
public static String formatAsRfc1123(java.sql.Date date) {
SimpleDateFormat form = new SimpleDateFormat(RFC_1123_FORMAT,
new Locale("en_EN"));
return form.format(date);
}
public static String formatAsSqlDate(Date date) {
SimpleDateFormat form = new SimpleDateFormat(SQL_DATE_FORMAT,
new Locale("en_EN"));
return form.format(date);
}
public static String formatAsSqlDate(java.sql.Date date) {
return date.toString();
}
public static String formatAsSqlDate(GregorianCalendar cal) {
return toSqlDate(cal).toString();
}
public static String formatAsSqlDate(int year, int month, int day) {
StringBuilder sb = new StringBuilder();
if(year > 999){
sb.append(year);
}
else{
throw new IllegalArgumentException(
"Rok powinien być liczbą 4-cyfrową");
}
sb.append("-");
if(month < 10){
sb.append("0");
sb.append(month);
}
else{
sb.append(month);
}
sb.append("-");
if(day > 9){
sb.append(day);
}
else{
sb.append("0");
sb.append(day);
}
return sb.toString();
}
//------------------------ przekształcenia dat między sobą ------------------public static Date toUtilDate(GregorianCalendar gc) {
return new Date(gc.getTimeInMillis());
}
public static Date toUtilDate(java.sql.Date date) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
return new Date(gc.getTimeInMillis());
}
/**
* Data musi zawierać rok 4-cyfrowy. Miesiące mogą być 1
* lub 2 cyfrowe, oddzielone '-' lub '/'
* @param date - data
* @return zwraca nowy obiekt Date
*/
public static Date toUtilDate(String date) {
int firstDelim = -1;
int secondDelim = -1;
if(date.contains("-")){
firstDelim = date.indexOf('-');
secondDelim = date.indexOf('-', firstDelim + 1);
}
if(date.contains("/")){
firstDelim = date.indexOf('/');
secondDelim = date.indexOf('/', firstDelim + 1);
}
String dy = date.substring(0, firstDelim);
if(firstDelim == 4){}
else if(firstDelim == 2){
dy = "20".concat(dy);
}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
String dm = date.substring(firstDelim + 1, secondDelim);
if(dm.length() == 1 || dm.length() == 2){}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
//-
String dd = date.substring(secondDelim + 1);
if(dd.length() == 1 || dd.length() == 2){}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
GregorianCalendar gc = new GregorianCalendar(Integer.parseInt(dy),
Integer.parseInt(dm + 1), Integer.parseInt(dd));
return new Date(gc.getTimeInMillis());
}
public static Date toUtilDate(int year, int month, int day) {
GregorianCalendar gc = new GregorianCalendar(year, month - 1, day);
return new Date(gc.getTimeInMillis());
}
private static java.sql.Date toSqlDate(GregorianCalendar gc) {
return new java.sql.Date(gc.getTimeInMillis());
}
public static java.sql.Date toSqlDate(Date date) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
return new java.sql.Date(gc.getTimeInMillis());
}
/**
* Data musi zawierać rok 4-cyfrowy. Miesiące mogą być 1
* lub 2 cyfrowe, oddzielone '-' lub '/'
* @param date - data
* @return obiekt Date
*/
public static java.sql.Date toSqlDate(String date) {
int firstDelim = -1;
int secondDelim = -1;
StringBuilder sb = new StringBuilder();
if(date.contains("-")){
firstDelim = date.indexOf('-');
secondDelim = date.indexOf('-', firstDelim + 1);
}
if(date.contains("/")){
firstDelim = date.indexOf('/');
secondDelim = date.indexOf('/', firstDelim + 1);
}
String dy = date.substring(0, firstDelim);
if(firstDelim == 4){
sb.append(dy);
sb.append("-");
}
else if(firstDelim == 2){
sb.append("20");
sb.append(dy);
sb.append("-");
}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
String dm = date.substring(firstDelim + 1, secondDelim);
if(dm.length() == 1){
sb.append("0");
sb.append(dm);
sb.append("-");
}
else if(dm.length() == 2){
sb.append(dm);
sb.append("-");
}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
//-
String dd = date.substring(secondDelim + 1);
if(dd.length() == 1){
sb.append("0");
sb.append(dd);
}
else if(dd.length() == 2){
sb.append(dd);
}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
return java.sql.Date.valueOf(sb.toString());
}
public static java.sql.Date toSqlDate(int year, int month, int day) {
GregorianCalendar gc = new GregorianCalendar(year, month - 1, day);
return new java.sql.Date(gc.getTimeInMillis());
}
/**
* Przelicza datę na GC. Działa dla dat od 1 stycznia 1900 r.
* @param date - data
* @return nowy GregorianCalendar
*/
public static GregorianCalendar toGregCal(Date date) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
return gc;
}
/**
* Przelicza datę na GC. Działa dla dat od 1 stycznia 1900 r.
* @param date data
* @return nowy GregorianCalendar
*/
public static GregorianCalendar toGregCal(java.sql.Date date) {
GregorianCalendar gc = new GregorianCalendar();
gc.setTime(date);
return gc;
}
/**
* Data musi zawierać rok 4-cyfrowy. Miesiące mogą być 1
* lub 2 cyfrowe, oddzielone '-' lub '/'
* @param date data
* @return nowy GregorianCalendar
*/
public static GregorianCalendar toGregCal(String date) {
int firstDelim = -1;
int secondDelim = -1;
if(date.contains("-")){
firstDelim = date.indexOf('-');
secondDelim = date.indexOf('-', firstDelim + 1);
}
if(date.contains("/")){
firstDelim = date.indexOf('/');
secondDelim = date.indexOf('/', firstDelim + 1);
}
String dy;
if(firstDelim == 4){
dy = date.substring(0, firstDelim);
}
else if(firstDelim == 2){
dy = "20".concat(date.substring(0, firstDelim));
}
else{
throw new IllegalArgumentException("Nieprawidłowa data");
}
String dm = date.substring(firstDelim + 1, secondDelim);
String dd = date.substring(secondDelim + 1);
int year = Integer.parseInt(dy);
int month = Integer.parseInt(dm);
int day = Integer.parseInt(dd);
return new GregorianCalendar(year, month - 1, day);
}
}
