formatDate function
String
formatDate(
- DateTime date,
- List<
String> formats, { - DateLocale locale = const EnglishDateLocale(),
Implementation
String formatDate(
DateTime date,
List<String> formats, {
DateLocale locale = const EnglishDateLocale(),
}) {
final sb = StringBuffer();
// english_date_locale
for (String format in formats) {
if (format.startsWith(escape)) {
format = format.substring(1);
sb.write(format);
} else if (format == yyyy) {
sb.write(_digits(date.year, 4));
} else if (format == yy) {
sb.write(_digits(date.year % 100, 2));
} else if (format == mm) {
sb.write(_digits(date.month, 2));
} else if (format == m) {
sb.write(date.month);
} else if (format == MM) {
sb.write(locale.monthsLong[date.month - 1]);
} else if (format == M) {
sb.write(locale.monthsShort[date.month - 1]);
} else if (format == dd) {
sb.write(_digits(date.day, 2));
} else if (format == d) {
sb.write(date.day);
} else if (format == w) {
sb.write((date.day + 7) ~/ 7);
} else if (format == W) {
sb.write((dayInYear(date) + 7) ~/ 7);
} else if (format == WW) {
sb.write(_digits((dayInYear(date) + 7) ~/ 7, 2));
} else if (format == DD) {
sb.write(locale.daysLong[date.weekday - 1]);
} else if (format == D) {
sb.write(locale.daysShort[date.weekday - 1]);
} else if (format == HH) {
sb.write(_digits(date.hour, 2));
} else if (format == H) {
sb.write(date.hour);
} else if (format == hh) {
int hour = date.hour % 12;
if (hour == 0) hour = 12;
sb.write(_digits(hour, 2));
} else if (format == h) {
int hour = date.hour % 12;
if (hour == 0) hour = 12;
sb.write(hour);
} else if (format == am) {
sb.write(date.hour < 12 ? locale.am : locale.pm);
} else if (format == nn) {
sb.write(_digits(date.minute, 2));
} else if (format == n) {
sb.write(date.minute);
} else if (format == ss) {
sb.write(_digits(date.second, 2));
} else if (format == s) {
sb.write(date.second);
} else if (format == SSS) {
sb.write(_digits(date.millisecond, 3));
} else if (format == S) {
sb.write(date.millisecond);
} else if (format == uuu) {
sb.write(_digits(date.microsecond, 3));
} else if (format == u) {
sb.write(date.microsecond);
} else if (format == z) {
if (date.timeZoneOffset.inMinutes == 0) {
sb.write('Z');
} else {
if (date.timeZoneOffset.isNegative) {
sb.write('-');
sb.write(_digits((-date.timeZoneOffset.inHours) % 24, 2));
sb.write(_digits((-date.timeZoneOffset.inMinutes) % 60, 2));
} else {
sb.write('+');
sb.write(_digits(date.timeZoneOffset.inHours % 24, 2));
sb.write(_digits(date.timeZoneOffset.inMinutes % 60, 2));
}
}
} else if (format == Z) {
sb.write(date.timeZoneName);
} else {
sb.write(format);
}
}
return sb.toString();
}