private static synchronized void initCache() {
if (CACHE.size() <= 0) {
for (FormatTokenEnum token : FormatTokenEnum.values()) {
List<Character> tokenKeys = new ArrayList<Character>();
if (token.name().contains("_")) {
String[] tokens = token.name().split("_");
for (String tokenLets : tokens) {
tokenKeys.add(tokenLets.toUpperCase().charAt(0));
}
} else {
tokenKeys.add(token.name().toUpperCase().charAt(0));
}
for (Character tokenKey : tokenKeys) {
List<FormatTokenEnum> l = CACHE.get(tokenKey);
if (l == null) {
l = new ArrayList<FormatTokenEnum>(1);
CACHE.put(tokenKey, l);
}
l.add(token);
}
}
}
}
@Override
public void parse(ToDateParser params, FormatTokenEnum formatTokenEnum, String formatTokenStr) {
Calendar result = params.getResultCalendar();
String s = params.getInputStr();
String inputFragmentStr = null;
int dateNr = 0;
switch (formatTokenEnum) {
case MONTH:
inputFragmentStr = setByName(result, params, Calendar.MONTH, Calendar.LONG);
break;
case Q /*NOT supported yet*/:
throwException(params, format("token '%s' not supported yet.", formatTokenEnum.name()));
break;
case MON:
inputFragmentStr = setByName(result, params, Calendar.MONTH, Calendar.SHORT);
break;
case MM:
// Note: In Calendar Month go from 0 - 11
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.MONTH, dateNr - 1);
break;
case RM:
dateNr = 0;
for (String monthName : ROMAN_MONTH) {
dateNr++;
int len = monthName.length();
if (s.length() >= len && monthName.equalsIgnoreCase(s.substring(0, len))) {
result.set(Calendar.MONTH, dateNr);
inputFragmentStr = monthName;
break;
}
}
if (inputFragmentStr == null || inputFragmentStr.isEmpty()) {
throwException(
params,
format(
"Issue happened when parsing token '%s'. " + "Expected one of: %s",
formatTokenEnum.name(), Arrays.toString(ROMAN_MONTH)));
}
break;
default:
throw new IllegalArgumentException(
format(
"%s: Internal Error. Unhandled case: %s",
this.getClass().getSimpleName(), formatTokenEnum));
}
params.remove(inputFragmentStr, formatTokenStr);
}
@Override
public void parse(ToDateParser params, FormatTokenEnum formatTokenEnum, String formatTokenStr) {
Calendar result = params.getResultCalendar();
String inputFragmentStr = null;
int dateNr = 0;
switch (formatTokenEnum) {
case SYYYY:
case YYYY:
case IYYY:
inputFragmentStr = matchStringOrThrow(PATTERN_FOUR_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
// Gregorian calendar does not have a year 0.
// 0 = 0001 BC, -1 = 0002 BC, ... so we adjust
result.set(Calendar.YEAR, dateNr >= 0 ? dateNr : dateNr + 1);
break;
case YYY:
case IYY:
inputFragmentStr = matchStringOrThrow(PATTERN_THREE_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
// Gregorian calendar does not have a year 0.
// 0 = 0001 BC, -1 = 0002 BC, ... so we adjust
result.set(Calendar.YEAR, dateNr >= 0 ? dateNr : dateNr + 1);
break;
case RRRR:
inputFragmentStr = matchStringOrThrow(PATTERN_TWO_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
dateNr += dateNr < 50 ? 2000 : 1900;
result.set(Calendar.YEAR, dateNr);
break;
case RR:
Calendar calendar = Calendar.getInstance();
int cc = calendar.get(Calendar.YEAR) / 100;
inputFragmentStr = matchStringOrThrow(PATTERN_TWO_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr) + cc * 100;
result.set(Calendar.YEAR, dateNr);
break;
case EE /*NOT supported yet*/:
throwException(params, format("token '%s' not supported yet.", formatTokenEnum.name()));
break;
case E /*NOT supported yet*/:
throwException(params, format("token '%s' not supported yet.", formatTokenEnum.name()));
break;
case YY:
case IY:
inputFragmentStr = matchStringOrThrow(PATTERN_TWO_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
// Gregorian calendar does not have a year 0.
// 0 = 0001 BC, -1 = 0002 BC, ... so we adjust
result.set(Calendar.YEAR, dateNr >= 0 ? dateNr : dateNr + 1);
break;
case SCC:
case CC:
inputFragmentStr = matchStringOrThrow(PATTERN_TWO_DIGITS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr) * 100;
result.set(Calendar.YEAR, dateNr);
break;
case Y:
case I:
inputFragmentStr = matchStringOrThrow(PATTERN_ONE_DIGIT, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
// Gregorian calendar does not have a year 0.
// 0 = 0001 BC, -1 = 0002 BC, ... so we adjust
result.set(Calendar.YEAR, dateNr >= 0 ? dateNr : dateNr + 1);
break;
case BC_AD:
inputFragmentStr = matchStringOrThrow(PATTERN_BC_AD, params, formatTokenEnum);
if (inputFragmentStr.toUpperCase().startsWith("B")) {
result.set(Calendar.ERA, GregorianCalendar.BC);
} else {
result.set(Calendar.ERA, GregorianCalendar.AD);
}
break;
default:
throw new IllegalArgumentException(
format(
"%s: Internal Error. Unhandled case: %s",
this.getClass().getSimpleName(), formatTokenEnum));
}
params.remove(inputFragmentStr, formatTokenStr);
}
@Override
public void parse(ToDateParser params, FormatTokenEnum formatTokenEnum, String formatTokenStr) {
Calendar result = params.getResultCalendar();
String inputFragmentStr = null;
int dateNr = 0;
switch (formatTokenEnum) {
case HH24:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.HOUR_OF_DAY, dateNr);
break;
case HH12:
case HH:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.HOUR, dateNr);
break;
case MI:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.MINUTE, dateNr);
break;
case SS:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.SECOND, dateNr);
break;
case SSSSS:
inputFragmentStr = matchStringOrThrow(PATTERN_NUMBER, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
result.set(Calendar.HOUR_OF_DAY, 0);
result.set(Calendar.MINUTE, 0);
result.set(Calendar.SECOND, dateNr);
break;
case FF:
inputFragmentStr = matchStringOrThrow(PATTERN_NUMBER, params, formatTokenEnum);
String paddedRightNrStr = format("%-9s", inputFragmentStr).replace(' ', '0');
paddedRightNrStr = paddedRightNrStr.substring(0, 9);
Double nineDigits = Double.parseDouble(paddedRightNrStr);
params.setNanos(nineDigits.intValue());
dateNr = (int) Math.round(nineDigits / 1000000.0);
result.set(Calendar.MILLISECOND, dateNr);
break;
case AM_PM:
inputFragmentStr = matchStringOrThrow(PATTERN_AM_PM, params, formatTokenEnum);
if (inputFragmentStr.toUpperCase().startsWith("A")) {
result.set(Calendar.AM_PM, Calendar.AM);
} else {
result.set(Calendar.AM_PM, Calendar.PM);
}
break;
case TZH:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
TimeZone tz = result.getTimeZone();
int offsetMillis = tz.getRawOffset();
// purge min and sec
offsetMillis = (offsetMillis / MILLIS_IN_HOUR) * MILLIS_IN_HOUR;
tz.setRawOffset(offsetMillis + dateNr);
result.setTimeZone(tz);
break;
case TZM:
inputFragmentStr =
matchStringOrThrow(PATTERN_TWO_DIGITS_OR_LESS, params, formatTokenEnum);
dateNr = parseInt(inputFragmentStr);
tz = result.getTimeZone();
offsetMillis = tz.getRawOffset();
// purge hour
offsetMillis = offsetMillis % MILLIS_IN_HOUR;
tz.setRawOffset(dateNr * MILLIS_IN_HOUR + offsetMillis);
result.setTimeZone(tz);
break;
case TZR:
// Example: US/Pacific
String s = params.getInputStr();
tz = result.getTimeZone();
for (String tzName : TimeZone.getAvailableIDs()) {
int length = tzName.length();
if (s.length() >= length && tzName.equalsIgnoreCase(s.substring(0, length))) {
tz.setID(tzName);
result.setTimeZone(tz);
inputFragmentStr = tzName;
break;
}
}
break;
case TZD:
// Must correspond with TZR region. Example: PST (for US/Pacific
// standard time)
throwException(params, format("token '%s' not supported yet.", formatTokenEnum.name()));
break;
default:
throw new IllegalArgumentException(
format(
"%s: Internal Error. Unhandled case: %s",
this.getClass().getSimpleName(), formatTokenEnum));
}
params.remove(inputFragmentStr, formatTokenStr);
}
