net.time4j.DayPeriod Maven / Gradle / Ivy
/*
* -----------------------------------------------------------------------
* Copyright © 2013-2016 Meno Hochschild, Represents a period or part of a day usually in minute precision
* as formattable extension to {@code PlainTime}.
*
* The i18n-module is necessary to exploit the full functionality otherwise this class will just
* fall back to AM/PM only. Most non-English speaking countries completely ignore the notation of AM/PM
* but know day periods with finer granularity such as "in the morning", "evening" etc.
* Users can get extensive format support for day periods via the CLDR-pattern symbols b or B. The combination
* of half-day-hours with a day period is especially useful. Example of usage:
*
*
* ChronoFormatter<PlainTime> f =
* ChronoFormatter.ofTimePattern("h:mm BBBB", PatternType.CLDR, Locale.ENGLISH);
* System.out.println(f.format(PlainTime.of(17, 15))); // output => 5:15 in the afternoon
*
*
* @author Meno Hochschild
* @since 3.13/4.10
* @doctags.concurrency {immutable}
*/
/*[deutsch]
* Repräsentiert einen üblicherweise minutengenauen Tagesabschnitt
* als formatierbare Erweiterung zu {@code PlainTime}.
*
* Das i18n-Modul ist notwendig, um die volle Funktionalität auszuschöpfen, sonst wird
* diese Klasse nur auf AM/PM zurückfallen. Die meisten nicht Englisch sprechenden Länder
* ignorieren vollständig die AM/PM-Schreibweise, kennen aber Tagesabschnitte mit feinerer
* Detaillierung wie zum Beispiel "morgens", "Abend" usw. Anwender können
* Formatunterstützung mit Hilfe der CLDR-Formatmustersymbole b oder B erhalten. Die Kombination
* von Halbtagsstunden mit Tagesabschnitten ist besonders nützlich. Anwendungsbeispiel:
*
*
* ChronoFormatter<PlainTime> f =
* ChronoFormatter.ofTimePattern("h:mm BBBB", PatternType.CLDR, Locale.ENGLISH);
* System.out.println(f.format(PlainTime.of(17, 15))); // output => 5:15 in the afternoon
*
*
* @author Meno Hochschild
* @since 3.13/4.10
* @doctags.concurrency {immutable}
*/
public final class DayPeriod {
//~ Statische Felder/Initialisierungen --------------------------------
private static final SortedMap STD_RULES;
static {
SortedMap rules = new TreeMap<>();
rules.put(PlainTime.midnightAtStartOfDay(), "am");
rules.put(PlainTime.of(12), "pm");
STD_RULES = Collections.unmodifiableSortedMap(rules);
}
private static DayPeriod FALLBACK = new DayPeriod(Locale.ROOT, CalendarText.ISO_CALENDAR_TYPE, STD_RULES);
private static final AttributeKey CUSTOM = Attributes.createKey("CUSTOM_DAY_PERIOD", DayPeriod.class);
//~ Instanzvariablen --------------------------------------------------
private transient final Locale locale;
private transient final String calendarType;
private transient final SortedMap codeMap;
//~ Konstruktoren -----------------------------------------------------
private DayPeriod(
Locale locale, // optional
String calendarType,
SortedMap codeMap
) {
super();
this.locale = locale;
this.calendarType = calendarType;
this.codeMap = Collections.unmodifiableSortedMap(codeMap);
}
//~ Methoden ----------------------------------------------------------
/**
* Creates an instance based on locale-specific predefined data.
*
* If given locale does not point to any predefined data then Time4J will fall back to AM/PM.
*
* @param locale contains the language setting
* @return locale-specific instance
* @since 3.13/4.10
*/
/*[deutsch]
* Erzeugt eine Instanz, die auf sprachspezifischen vordefinierten Daten beruht.
*
* Wenn die angegebene Sprache nicht auf vordefinierte Daten verweist, wird Time4J auf AM/PM ausweichen.
*
* @param locale contains the language setting
* @return locale-specific instance
* @since 3.13/4.10
*/
public static DayPeriod of(Locale locale) {
return DayPeriod.of(locale, CalendarText.ISO_CALENDAR_TYPE);
}
/**
* Creates an instance based on user-defined data.
*
* @param timeToLabels map containing the day-periods where the keys represent starting points
* and the values represent the associated labels intended for representation
* @return user-specific instance
* @throws IllegalArgumentException if given map is empty or contains empty values
* @since 3.13/4.10
*/
/*[deutsch]
* Erzeugt eine Instanz, die auf benutzerdefinierten Daten beruht.
*
* @param timeToLabels map containing the day-periods where the keys represent starting points
* and the values represent the associated labels intended for representation
* @return user-specific instance
* @throws IllegalArgumentException if given map is empty or contains empty values
* @since 3.13/4.10
*/
public static DayPeriod of(Map timeToLabels) {
if (timeToLabels.isEmpty()) {
throw new IllegalArgumentException("Label map is empty.");
}
SortedMap map = new TreeMap<>(timeToLabels);
for (PlainTime key : timeToLabels.keySet()) {
if (key.getHour() == 24) {
map.put(PlainTime.midnightAtStartOfDay(), timeToLabels.get(key));
map.remove(key);
} else if (timeToLabels.get(key).isEmpty()) {
throw new IllegalArgumentException("Map has empty label: " + timeToLabels);
}
}
return new DayPeriod(null, "", map);
}
/**
* Equivalent to {@code fixed(TextWidth.WIDE, OutputContext.FORMAT)}.
*
* @return fixed textual representation of day period as function applicable on {@code PlainTime} etc.
* @see #fixed(TextWidth, OutputContext)
* @since 3.13/4.10
*/
/*[deutsch]
* Äquivalent zu {@code fixed(TextWidth.WIDE, OutputContext.FORMAT)}.
*
* @return fixed textual representation of day period as function applicable on {@code PlainTime} etc.
* @see #fixed(TextWidth, OutputContext)
* @since 3.13/4.10
*/
public ChronoFunction fixed() {
return this.fixed(TextWidth.WIDE, OutputContext.FORMAT);
}
/**
* Represents a fixed day period (am / pm / midnight / noon).
*
* The function returned can be applied on either {@code PlainTime} or {@code PlainTimestamp}.
* Otherwise it throws a {@code ChronoException} if an instance of {@code PlainTime} cannot be found.
* If this day period was not created for a locale then the function will just return one of the
* literals "am", "pm", "midnight" or "noon".
*
* @param width determines the text width
* @param outputContext determines in which context to format
* @return fixed textual representation of day period as function applicable on {@code PlainTime} etc.
* @since 3.13/4.10
*/
/*[deutsch]
* Repräsentiert einen fest definierten Tagesabschnitt (am / pm / midnight / noon).
*
* Die Funktion kann entweder auf {@code PlainTime} oder {@code PlainTimestamp} angewandt werden.
* Sonst wirft sie eine {@code ChronoException}, wenn keine Instanz von {@code PlainTime} gefunden wird.
* Wenn diese {@code DayPeriod} nicht für eine bestimmte Sprache erzeugt wurde, dann wird die
* Funktion einfach nur eines der Literale "am", "pm", "midnight" oder
* "noon" zurückgeben.
*
* @param width determines the text width
* @param outputContext determines in which context to format
* @return fixed textual representation of day period as function applicable on {@code PlainTime} etc.
* @since 3.13/4.10
*/
public ChronoFunction fixed(
TextWidth width,
OutputContext outputContext
) {
return new PeriodName(true, width, outputContext);
}
/**
* Equivalent to {@code approximate(TextWidth.WIDE, OutputContext.FORMAT)}.
*
* @return approximate textual representation of day period as function applicable on {@code PlainTime} etc.
* @see #approximate(TextWidth, OutputContext)
* @since 3.13/4.10
*/
/*[deutsch]
* Äquivalent zu {@code approximate(TextWidth.WIDE, OutputContext.FORMAT)}.
*
* @return approximate textual representation of day period as function applicable on {@code PlainTime} etc.
* @see #approximate(TextWidth, OutputContext)
* @since 3.13/4.10
*/
public ChronoFunction approximate() {
return this.approximate(TextWidth.WIDE, OutputContext.FORMAT);
}
/**
* Represents a flexible day period (in the afternoon, at night etc).
*
* The function returned can be applied on either {@code PlainTime} or {@code PlainTimestamp}.
* Otherwise it throws a {@code ChronoException} if an instance of {@code PlainTime} cannot be found.
* If no suitable text can be determined then the function falls back to AM/PM.
*
* @param width determines the text width
* @param outputContext determines in which context to format
* @return approximate textual representation of day period as function applicable on {@code PlainTime} etc.
* @since 3.13/4.10
*/
/*[deutsch]
* Repräsentiert einen flexiblen Tagesabschnitt (nachmittags, nachts usw).
*
* Die Funktion kann entweder auf {@code PlainTime} oder {@code PlainTimestamp} angewandt werden.
* Sonst wirft sie eine {@code ChronoException}, wenn keine Instanz von {@code PlainTime} gefunden wird.
* Wenn die Funktion keinen geeigneten Text findet, fällt sie auf AM/PM zurück.
*
* @param width determines the text width
* @param outputContext determines in which context to format
* @return approximate textual representation of day period as function applicable on {@code PlainTime} etc.
* @since 3.13/4.10
*/
public ChronoFunction approximate(
TextWidth width,
OutputContext outputContext
) {
return new PeriodName(false, width, outputContext);
}
/**
* Determines the start of the day period which covers given clock time.
*
* @param context the clock time a day period is searched for
* @return start of day period around given clock time, inclusive
* @see #getEnd(PlainTime)
* @since 3.13/4.10
*/
/*[deutsch]
* Ermittelt den Start des Tagesabschnitts, der die angegebene Uhrzeit enthält.
*
* @param context the clock time a day period is searched for
* @return start of day period around given clock time, inclusive
* @see #getEnd(PlainTime)
* @since 3.13/4.10
*/
public PlainTime getStart(PlainTime context) {
PlainTime compare = (
(context.getHour() == 24)
? PlainTime.midnightAtStartOfDay()
: context);
PlainTime last = this.codeMap.lastKey();
for (PlainTime key : this.codeMap.keySet()) {
if (compare.isSimultaneous(key)) {
return key;
} else if (compare.isBefore(key)) {
break;
} else {
last = key;
}
}
return last;
}
/**
* Determines the end of the day period which covers given clock time.
*
* @param context the clock time a day period is searched for
* @return end of day period around given clock time, exclusive
* @see #getStart(PlainTime)
* @since 3.13/4.10
*/
/*[deutsch]
* Ermittelt das Ende des Tagesabschnitts, der die angegebene Uhrzeit enthält.
*
* @param context the clock time a day period is searched for
* @return end of day period around given clock time, exclusive
* @see #getStart(PlainTime)
* @since 3.13/4.10
*/
public PlainTime getEnd(PlainTime context) {
PlainTime compare = (
(context.getHour() == 24)
? PlainTime.midnightAtStartOfDay()
: context);
for (PlainTime key : this.codeMap.keySet()) {
if (compare.isBefore(key)) {
return key;
}
}
return this.codeMap.firstKey();
}
@Override
public boolean equals(Object obj) {
if (this == obj) {
return true;
} else if (obj instanceof DayPeriod) {
DayPeriod that = (DayPeriod) obj;
if (this.locale == null) {
if (that.locale != null) {
return false;
}
} else if (!this.locale.equals(that.locale)) {
return false;
}
return (this.codeMap.equals(that.codeMap) && this.calendarType.equals(that.calendarType));
}
return false;
}
@Override
public int hashCode() {
return this.codeMap.hashCode();
}
/**
* For debugging purposes.
*
* @return String
*/
/*[deutsch]
* Für Debugging-Zwecke.
*
* @return String
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder(64);
sb.append("DayPeriod[");
if (this.isPredefined()) {
sb.append("locale=");
sb.append(this.locale);
sb.append(',');
if (!this.calendarType.equals(CalendarText.ISO_CALENDAR_TYPE)) {
sb.append(",calendar-type=");
sb.append(this.calendarType);
sb.append(',');
}
}
sb.append(this.codeMap);
sb.append(']');
return sb.toString();
}
// package-private because used in deserialization
static DayPeriod of(
Locale locale,
String calendarType
) {
String lang = locale.getLanguage(); // NPE-check
if (lang.equals("nn")) {
locale = new Locale("nb"); // CLDR 29 contains no data for language nn
}
Map resourceMap = loadTextForms(locale, calendarType);
SortedMap codeMap = Collections.emptySortedMap();
for (String key : resourceMap.keySet()) {
if (accept(key)) {
int hour = Integer.parseInt(key.substring(1, 3));
int minute = Integer.parseInt(key.substring(3, 5));
PlainTime time = PlainTime.midnightAtStartOfDay();
if (hour == 24) {
if (minute != 0) {
throw new IllegalStateException("Invalid time key: " + key);
}
} else if ((hour >= 0) && (hour < 24) && (minute >= 0) && (minute < 60)) {
time = time.plus(hour * 60 + minute, ClockUnit.MINUTES);
} else {
throw new IllegalStateException("Invalid time key: " + key);
}
if (codeMap.isEmpty()) {
codeMap = new TreeMap<>();
}
codeMap.put(time, resourceMap.get(key));
}
}
if (codeMap.isEmpty() || lang.isEmpty()) {
return FALLBACK;
}
Iterator iter = codeMap.keySet().iterator();
String oldCode = "";
while (iter.hasNext()) {
PlainTime time = iter.next();
String code = codeMap.get(time);
if (code.equals(oldCode)) {
iter.remove(); // lex colombia
} else {
oldCode = code;
}
}
return new DayPeriod(locale, calendarType, codeMap);
}
private boolean isPredefined() {
return (this.locale != null);
}
private static String getFixedCode(PlainTime time) {
int minuteOfDay = time.get(PlainTime.MINUTE_OF_DAY).intValue();
if ((minuteOfDay == 0) || (minuteOfDay == 1440)) {
return "midnight";
} else if (minuteOfDay < 720) {
return "am";
} else if (minuteOfDay == 720) {
return "noon";
} else {
return "pm";
}
}
private static String createKey(
Map textForms,
TextWidth tw,
OutputContext oc,
String code
) {
if (tw == TextWidth.SHORT) {
tw = TextWidth.ABBREVIATED;
}
String key = toPrefix(tw, oc) + code;
if (!textForms.containsKey(key)) {
if (oc == OutputContext.STANDALONE) {
if (tw == TextWidth.ABBREVIATED) {
key = createKey(textForms, tw, OutputContext.FORMAT, code);
} else {
key = createKey(textForms, TextWidth.ABBREVIATED, oc, code);
}
} else {
if (tw != TextWidth.ABBREVIATED) {
key = createKey(textForms, TextWidth.ABBREVIATED, oc, code);
}
}
}
return key;
}
private static String toPrefix(
TextWidth tw,
OutputContext oc
) {
char c;
switch (tw) {
case WIDE:
c = 'w';
break;
case NARROW:
c = 'n';
break;
default:
c = 'a';
}
if (oc == OutputContext.STANDALONE) {
c = Character.toUpperCase(c);
}
return "P(" + c + ")_";
}
private static Map loadTextForms(
Locale locale,
String calendarType
) {
Map map = CalendarText.getInstance(calendarType, locale).getTextForms();
if (
!calendarType.equals(CalendarText.ISO_CALENDAR_TYPE)
&& !"true".equals(map.get("hasDayPeriods"))
) {
map = CalendarText.getIsoInstance(locale).getTextForms(); // fallback
}
return map;
}
private static boolean accept(String key) {
return ((key.charAt(0) == 'T') && (key.length() == 5) && Character.isDigit(key.charAt(1)));
}
//~ Innere Klassen ----------------------------------------------------
static class Extension
implements ChronoExtension {
//~ Methoden ------------------------------------------------------
@Override
public boolean accept(Class chronoType) {
return PlainTime.class.isAssignableFrom(chronoType); // not used
}
@Override
public Set> getElements(
Locale locale,
AttributeQuery attributes
) {
DayPeriod dp = from(locale, attributes);
Set> set = new HashSet<>();
set.add(new Element(false, dp));
if (!attributes.contains(CUSTOM)) {
set.add(new Element(true, dp)); // fixed
}
return Collections.unmodifiableSet(set);
}
@Override
public > T resolve(
T entity,
Locale locale,
AttributeQuery attributes
) {
if (
entity.contains(PlainTime.COMPONENT)
|| entity.contains(PlainTime.ISO_HOUR)
|| entity.contains(PlainTime.DIGITAL_HOUR_OF_DAY)
|| entity.contains(PlainTime.CLOCK_HOUR_OF_DAY)
) {
return entity; // optimization
}
DayPeriod dp = from(locale, attributes);
Element approximate = new Element(false, dp);
if (entity.contains(approximate)) {
String codes = entity.get(approximate);
int index = 0;
int count = 0;
Meridiem meridiem = null;
do {
int nextIndex = codes.indexOf('|', index);
String code;
if (nextIndex == -1) {
code = codes.substring(index);
} else {
code = codes.substring(index, nextIndex);
}
index = nextIndex + 1;
count++;
if (dp.isPredefined() && (meridiem == null)) {
if (code.equals("midnight")) {
meridiem = Meridiem.AM;
continue;
} else if (code.equals("noon")) {
meridiem = Meridiem.PM;
continue;
}
}
for (PlainTime time : dp.codeMap.keySet()) {
if (dp.codeMap.get(time).equals(code)) {
Meridiem m = null;
int hour12 = getHour12(entity);
PlainTime end = dp.getEnd(time);
// Optimistic assumption that hour12 is always within time range described by code.
// However, the strict parser will detect any inconsistencies with day periods later.
if (time.getHour() >= 12) {
if (end.isAfter(time) || end.isSimultaneous(PlainTime.midnightAtStartOfDay())) {
m = Meridiem.PM;
} else if (hour12 != -1) {
m = ((hour12 + 12 >= time.getHour()) ? Meridiem.PM : Meridiem.AM);
}
} else if (!end.isAfter(PlainTime.of(12))) {
m = Meridiem.AM;
} else if (hour12 != -1) {
m = ((hour12 >= time.getHour()) ? Meridiem.AM : Meridiem.PM);
}
if (m != null) {
if ((meridiem != null) && (meridiem != m)) { // ambivalent day period
if (hour12 == -1) {
meridiem = null; // no clock hour available for distinction
} else if (code.startsWith("night")) { // night1 or night2 (ja)
meridiem = ((hour12 < 6) ? Meridiem.AM : Meridiem.PM);
} else if (code.startsWith("afternoon")) { // languages id or uz
meridiem = ((hour12 < 6) ? Meridiem.PM : Meridiem.AM);
} else { // cannot resolve other day period code duplicate to am/pm
meridiem = null;
}
} else {
meridiem = m;
}
}
}
}
} while (index > 0);
if (meridiem != null) {
entity = entity.with(PlainTime.AM_PM_OF_DAY, meridiem);
if (count > 1) {
entity = entity.with(approximate, null);
} // else don't remove element value here in order to help the strict parser to detect errors later
}
} else {
Element fixed = new Element(true, dp);
if (entity.contains(fixed)) {
String code = entity.get(fixed);
if (code.equals("am") || code.equals("midnight")) {
entity = entity.with(PlainTime.AM_PM_OF_DAY, Meridiem.AM);
} else {
entity = entity.with(PlainTime.AM_PM_OF_DAY, Meridiem.PM);
}
entity = entity.with(fixed, null);
}
}
return entity;
}
private static int getHour12(ChronoEntity entity) {
int hour12 = -1;
if (entity.contains(PlainTime.CLOCK_HOUR_OF_AMPM)) {
hour12 = entity.get(PlainTime.CLOCK_HOUR_OF_AMPM).intValue();
if (hour12 == 12) {
hour12 = 0;
}
} else if (entity.contains(PlainTime.DIGITAL_HOUR_OF_AMPM)) {
hour12 = entity.get(PlainTime.DIGITAL_HOUR_OF_AMPM).intValue();
}
return hour12;
}
private static DayPeriod from(
Locale locale,
AttributeQuery attributes
) {
if (attributes.contains(CUSTOM)) {
return attributes.get(CUSTOM);
}
return DayPeriod.of(locale, attributes.get(Attributes.CALENDAR_TYPE, CalendarText.ISO_CALENDAR_TYPE));
}
}
static class Element
extends BasicElement
implements TextElement, ElementRule, String> {
//~ Statische Felder/Initialisierungen ----------------------------
private static final long serialVersionUID = 5589976208326940032L;
//~ Instanzvariablen ----------------------------------------------
private transient final boolean fixed;
private transient final DayPeriod dayPeriod;
//~ Konstruktoren -------------------------------------------------
Element(
boolean fixed,
Locale locale,
String calendarType
) {
this(fixed, DayPeriod.of(locale, calendarType));
}
Element(
boolean fixed,
DayPeriod dayPeriod
) {
super(fixed ? "FIXED_DAY_PERIOD" : "APPROXIMATE_DAY_PERIOD");
this.fixed = fixed;
this.dayPeriod = dayPeriod;
}
//~ Methoden ------------------------------------------------------
@Override
public Class getType() {
return String.class;
}
@Override
public char getSymbol() {
return (this.fixed ? 'b' : 'B');
}
@Override
public String getDefaultMinimum() {
if (this.fixed) {
return "am";
}
PlainTime key = this.dayPeriod.codeMap.firstKey();
return this.dayPeriod.codeMap.get(key);
}
@Override
public String getDefaultMaximum() {
if (this.fixed) {
return "pm";
}
PlainTime key = this.dayPeriod.codeMap.lastKey();
return this.dayPeriod.codeMap.get(key);
}
@Override
public boolean isDateElement() {
return false;
}
@Override
public boolean isTimeElement() {
return true;
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder(32);
sb.append(this.name());
sb.append('@');
sb.append(this.dayPeriod);
return sb.toString();
}
@Override
@SuppressWarnings("unchecked")
protected > ElementRule derive(Chronology chronology) {
if (chronology.isRegistered(PlainTime.COMPONENT)) {
return (ElementRule) this;
}
return null;
}
@Override
protected boolean doEquals(BasicElement obj) {
Element that = (Element) obj;
return this.dayPeriod.equals(that.dayPeriod);
}
@Override
public String getValue(ChronoEntity context) { // used in consistency-check after strict parsing
PlainTime time = context.get(PlainTime.COMPONENT);
if (this.fixed) {
return getFixedCode(time);
} else {
if (this.dayPeriod.isPredefined()) {
Map textForms = loadTextForms(this.getLocale(), this.getCalendarType());
String code = null;
if (time.isMidnight()) {
code = "midnight";
} else if (time.isSimultaneous(PlainTime.of(12))) {
code = "noon";
}
if (code != null) {
String key = createKey(textForms, TextWidth.ABBREVIATED, OutputContext.FORMAT, code);
if (textForms.containsKey(key)) {
return code;
}
}
}
PlainTime key = this.dayPeriod.getStart(time);
return this.dayPeriod.codeMap.get(key);
}
}
@Override
public String getMinimum(ChronoEntity context) {
return this.getDefaultMinimum();
}
@Override
public String getMaximum(ChronoEntity context) {
return this.getDefaultMaximum();
}
@Override
public boolean isValid(
ChronoEntity context,
String value
) {
return false;
}
@Override
public ChronoEntity withValue(
ChronoEntity context,
String value,
boolean lenient
) {
throw new IllegalArgumentException("Day period element cannot be set.");
}
@Override
public ChronoElement getChildAtFloor(ChronoEntity context) {
return null;
}
@Override
public ChronoElement getChildAtCeiling(ChronoEntity context) {
return null;
}
boolean isFixed() {
return this.fixed;
}
Locale getLocale() {
return this.dayPeriod.locale;
}
String getCalendarType() {
return this.dayPeriod.calendarType;
}
Object getCodeMap() {
return this.dayPeriod.codeMap;
}
private Object writeReplace() {
return new SPX(this, SPX.DAY_PERIOD_TYPE);
}
private void readObject(ObjectInputStream in) throws IOException {
throw new InvalidObjectException("Serialization proxy required.");
}
@Override
public void print(
ChronoDisplay context,
Appendable buffer,
AttributeQuery attributes
) throws IOException, ChronoException {
TextWidth width = attributes.get(Attributes.TEXT_WIDTH, TextWidth.WIDE);
OutputContext oc = attributes.get(Attributes.OUTPUT_CONTEXT, OutputContext.FORMAT);
String s;
if (this.fixed) {
s = this.dayPeriod.fixed(width, oc).apply(context);
} else {
s = this.dayPeriod.approximate(width, oc).apply(context);
}
buffer.append(s);
}
@Override
public String parse(
CharSequence text,
ParsePosition status,
AttributeQuery attributes
) {
int index = status.getIndex();
OutputContext oc = attributes.get(Attributes.OUTPUT_CONTEXT, OutputContext.FORMAT);
String result = this.parse(text, status, attributes, oc);
if ((result == null) && attributes.get(Attributes.PARSE_MULTIPLE_CONTEXT, Boolean.TRUE)) {
status.setErrorIndex(-1);
status.setIndex(index);
oc = ((oc == OutputContext.FORMAT) ? OutputContext.STANDALONE : OutputContext.FORMAT);
result = this.parse(text, status, attributes, oc);
}
return result;
}
private String parse(
CharSequence text,
ParsePosition status,
AttributeQuery attributes,
OutputContext oc
) {
List codes = new ArrayList<>();
Map textForms = null;
if (this.fixed) {
codes.add("am");
codes.add("pm");
codes.add("midnight");
codes.add("noon");
} else {
Set set = new LinkedHashSet<>(this.dayPeriod.codeMap.values());
codes.addAll(set); // no duplicates
if (this.dayPeriod.isPredefined()) {
codes.add("midnight");
codes.add("noon");
}
}
if (this.dayPeriod.isPredefined()) {
textForms = loadTextForms(this.getLocale(), this.getCalendarType());
}
TextWidth tw = attributes.get(Attributes.TEXT_WIDTH, TextWidth.WIDE);
boolean caseInsensitive =
attributes.get(Attributes.PARSE_CASE_INSENSITIVE, Boolean.TRUE).booleanValue();
boolean partialCompare =
attributes.get(Attributes.PARSE_PARTIAL_COMPARE, Boolean.FALSE).booleanValue();
String candidate = null;
int start = status.getIndex();
int end = text.length();
int maxEq = 0;
for (String code : codes) {
String test = null;
if (this.dayPeriod.isPredefined()) {
String key;
if (this.fixed) {
key = createKey(textForms, tw, oc, code);
if (!textForms.containsKey(key)) { // use fallback am/pm
if (code.equals("midnight")) {
key = createKey(textForms, tw, oc, "am");
} else if (code.equals("noon")) {
key = createKey(textForms, tw, oc, "pm");
}
}
} else {
key = createKey(textForms, tw, oc, code);
}
if (textForms.containsKey(key)) {
test = textForms.get(key);
}
} else {
test = code;
}
if (test != null) {
int pos = start;
int n = test.length();
boolean eq = true;
for (int j = 0; eq && (j < n); j++) {
if (start + j >= end) {
eq = false;
} else {
char c = text.charAt(start + j);
char t = test.charAt(j);
if (caseInsensitive) {
eq = this.compareIgnoreCase(c, t);
} else {
eq = (c == t);
}
if (eq) {
pos++;
}
}
}
if (partialCompare || (n == 1)) {
if (maxEq < pos - start) {
maxEq = pos - start;
candidate = code;
} else if ((candidate != null) && (maxEq == pos - start)) {
if (this.fixed) {
candidate = null;
} else {
candidate = candidate + "|" + code; // handles NARROW, fa, hu
}
}
} else if (eq) {
maxEq = n;
if (candidate == null) {
candidate = code;
} else if (this.fixed) {
candidate = null;
} else {
candidate = candidate + "|" + code; // handles NARROW, fa, hu
}
}
}
}
if (candidate == null) {
status.setErrorIndex(start);
} else {
status.setIndex(start + maxEq);
}
return candidate;
}
private boolean compareIgnoreCase(char c1, char c2) {
if (c1 >= 'a' && c1 <= 'z') {
c1 = (char) (c1 - 'a' + 'A');
}
if (c2 >= 'a' && c2 <= 'z') {
c2 = (char) (c2 - 'a' + 'A');
}
if (c1 >= 'A' && c1 <= 'Z') {
return (c1 == c2);
}
Locale locale = this.getLocale();
String s1 = String.valueOf(c1).toUpperCase(locale);
String s2 = String.valueOf(c2).toUpperCase(locale);
return s1.equals(s2);
}
}
private class PeriodName
implements ChronoFunction {
//~ Instanzvariablen ----------------------------------------------
private final boolean fixed;
private final TextWidth width;
private final OutputContext outputContext;
//~ Konstruktoren -------------------------------------------------
PeriodName(
boolean fixed,
TextWidth width,
OutputContext outputContext
) {
super();
if (width == null) {
throw new NullPointerException("Missing text width.");
} else if (outputContext == null) {
throw new NullPointerException("Missing output context.");
}
this.fixed = fixed;
this.width = width;
this.outputContext = outputContext;
}
//~ Methoden ------------------------------------------------------
@Override
public String apply(ChronoDisplay context) {
PlainTime time = context.get(PlainTime.COMPONENT);
DayPeriod dp = DayPeriod.this;
Locale locale = dp.locale;
if (this.fixed) {
String code = getFixedCode(time);
if (dp.isPredefined()) {
Map textForms = loadTextForms(locale, dp.calendarType);
String key = createKey(textForms, this.width, this.outputContext, code);
if (!textForms.containsKey(key)) {
if (code.equals("midnight")) {
key = createKey(textForms, this.width, this.outputContext, "am");
} else if (code.equals("noon")) {
key = createKey(textForms, this.width, this.outputContext, "pm");
}
}
if (textForms.containsKey(key)) {
return textForms.get(key);
}
} else {
return code;
}
} else {
if (dp.isPredefined()) {
Map textForms = loadTextForms(locale, dp.calendarType);
if (time.isMidnight()) {
String key = createKey(textForms, this.width, this.outputContext, "midnight");
if (textForms.containsKey(key)) {
return textForms.get(key);
}
} else if (time.isSimultaneous(PlainTime.of(12))) {
String key = createKey(textForms, this.width, this.outputContext, "noon");
if (textForms.containsKey(key)) {
return textForms.get(key);
}
}
String code = dp.codeMap.get(dp.getStart(time));
String key = createKey(textForms, this.width, this.outputContext, code);
if (textForms.containsKey(key)) {
return textForms.get(key);
}
} else {
return dp.codeMap.get(dp.getStart(time));
}
}
return time.get(PlainTime.AM_PM_OF_DAY).getDisplayName((locale == null) ? Locale.ROOT : locale); // fallback
}
}
}
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