Java tutorial
/* * Copyright (c) 2012, 2018, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation. Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ /* * This file is available under and governed by the GNU General Public * License version 2 only, as published by the Free Software Foundation. * However, the following notice accompanied the original version of this * file: * * Copyright (c) 2008-2012, Stephen Colebourne & Michael Nascimento Santos * * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are met: * * * Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright notice, * this list of conditions and the following disclaimer in the documentation * and/or other materials provided with the distribution. * * * Neither the name of JSR-310 nor the names of its contributors * may be used to endorse or promote products derived from this software * without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package java.time.format; import static java.time.temporal.ChronoField.DAY_OF_MONTH; import static java.time.temporal.ChronoField.HOUR_OF_DAY; import static java.time.temporal.ChronoField.INSTANT_SECONDS; import static java.time.temporal.ChronoField.MINUTE_OF_HOUR; import static java.time.temporal.ChronoField.MONTH_OF_YEAR; import static java.time.temporal.ChronoField.NANO_OF_SECOND; import static java.time.temporal.ChronoField.OFFSET_SECONDS; import static java.time.temporal.ChronoField.SECOND_OF_MINUTE; import static java.time.temporal.ChronoField.YEAR; import static java.time.temporal.ChronoField.ERA; import java.lang.ref.SoftReference; import java.math.BigDecimal; import java.math.BigInteger; import java.math.RoundingMode; import java.text.ParsePosition; import java.time.DateTimeException; import java.time.Instant; import java.time.LocalDate; import java.time.LocalDateTime; import java.time.LocalTime; import java.time.ZoneId; import java.time.ZoneOffset; import java.time.chrono.ChronoLocalDate; import java.time.chrono.ChronoLocalDateTime; import java.time.chrono.Chronology; import java.time.chrono.Era; import java.time.chrono.IsoChronology; import java.time.format.DateTimeTextProvider.LocaleStore; import java.time.temporal.ChronoField; import java.time.temporal.IsoFields; import java.time.temporal.JulianFields; import java.time.temporal.TemporalAccessor; import java.time.temporal.TemporalField; import java.time.temporal.TemporalQueries; import java.time.temporal.TemporalQuery; import java.time.temporal.ValueRange; import java.time.temporal.WeekFields; import java.time.zone.ZoneRulesProvider; import java.util.AbstractMap.SimpleImmutableEntry; import java.util.ArrayList; import java.util.Arrays; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.HashSet; import java.util.Iterator; import java.util.LinkedHashMap; import java.util.List; import java.util.Locale; import java.util.Map; import java.util.Map.Entry; import java.util.Objects; import java.util.Set; import java.util.TimeZone; import java.util.concurrent.ConcurrentHashMap; import java.util.concurrent.ConcurrentMap; import sun.text.spi.JavaTimeDateTimePatternProvider; import sun.util.locale.provider.CalendarDataUtility; import sun.util.locale.provider.LocaleProviderAdapter; import sun.util.locale.provider.LocaleResources; import sun.util.locale.provider.TimeZoneNameUtility; /** * Builder to create date-time formatters. * <p> * This allows a {@code DateTimeFormatter} to be created. * All date-time formatters are created ultimately using this builder. * <p> * The basic elements of date-time can all be added: * <ul> * <li>Value - a numeric value</li> * <li>Fraction - a fractional value including the decimal place. Always use this when * outputting fractions to ensure that the fraction is parsed correctly</li> * <li>Text - the textual equivalent for the value</li> * <li>OffsetId/Offset - the {@linkplain ZoneOffset zone offset}</li> * <li>ZoneId - the {@linkplain ZoneId time-zone} id</li> * <li>ZoneText - the name of the time-zone</li> * <li>ChronologyId - the {@linkplain Chronology chronology} id</li> * <li>ChronologyText - the name of the chronology</li> * <li>Literal - a text literal</li> * <li>Nested and Optional - formats can be nested or made optional</li> * </ul> * In addition, any of the elements may be decorated by padding, either with spaces or any other character. * <p> * Finally, a shorthand pattern, mostly compatible with {@code java.text.SimpleDateFormat SimpleDateFormat} * can be used, see {@link #appendPattern(String)}. * In practice, this simply parses the pattern and calls other methods on the builder. * * @implSpec * This class is a mutable builder intended for use from a single thread. * * @since 1.8 */ public final class DateTimeFormatterBuilder { /** * Query for a time-zone that is region-only. */ private static final TemporalQuery<ZoneId> QUERY_REGION_ONLY = (temporal) -> { ZoneId zone = temporal.query(TemporalQueries.zoneId()); return (zone != null && zone instanceof ZoneOffset == false ? zone : null); }; /** * The currently active builder, used by the outermost builder. */ private DateTimeFormatterBuilder active = this; /** * The parent builder, null for the outermost builder. */ private final DateTimeFormatterBuilder parent; /** * The list of printers that will be used. */ private final List<DateTimePrinterParser> printerParsers = new ArrayList<>(); /** * Whether this builder produces an optional formatter. */ private final boolean optional; /** * The width to pad the next field to. */ private int padNextWidth; /** * The character to pad the next field with. */ private char padNextChar; /** * The index of the last variable width value parser. */ private int valueParserIndex = -1; /** * Gets the formatting pattern for date and time styles for a locale and chronology. * The locale and chronology are used to lookup the locale specific format * for the requested dateStyle and/or timeStyle. * <p> * If the locale contains the "rg" (region override) * <a href="../../util/Locale.html#def_locale_extension">Unicode extensions</a>, * the formatting pattern is overridden with the one appropriate for the region. * * @param dateStyle the FormatStyle for the date, null for time-only pattern * @param timeStyle the FormatStyle for the time, null for date-only pattern * @param chrono the Chronology, non-null * @param locale the locale, non-null * @return the locale and Chronology specific formatting pattern * @throws IllegalArgumentException if both dateStyle and timeStyle are null */ public static String getLocalizedDateTimePattern(FormatStyle dateStyle, FormatStyle timeStyle, Chronology chrono, Locale locale) { Objects.requireNonNull(locale, "locale"); Objects.requireNonNull(chrono, "chrono"); if (dateStyle == null && timeStyle == null) { throw new IllegalArgumentException("Either dateStyle or timeStyle must be non-null"); } LocaleProviderAdapter adapter = LocaleProviderAdapter.getAdapter(JavaTimeDateTimePatternProvider.class, locale); JavaTimeDateTimePatternProvider provider = adapter.getJavaTimeDateTimePatternProvider(); String pattern = provider.getJavaTimeDateTimePattern(convertStyle(timeStyle), convertStyle(dateStyle), chrono.getCalendarType(), CalendarDataUtility.findRegionOverride(locale)); return pattern; } /** * Converts the given FormatStyle to the java.text.DateFormat style. * * @param style the FormatStyle style * @return the int style, or -1 if style is null, indicating un-required */ private static int convertStyle(FormatStyle style) { if (style == null) { return -1; } return style.ordinal(); // indices happen to align } /** * Constructs a new instance of the builder. */ public DateTimeFormatterBuilder() { super(); parent = null; optional = false; } /** * Constructs a new instance of the builder. * * @param parent the parent builder, not null * @param optional whether the formatter is optional, not null */ private DateTimeFormatterBuilder(DateTimeFormatterBuilder parent, boolean optional) { super(); this.parent = parent; this.optional = optional; } //----------------------------------------------------------------------- /** * Changes the parse style to be case sensitive for the remainder of the formatter. * <p> * Parsing can be case sensitive or insensitive - by default it is case sensitive. * This method allows the case sensitivity setting of parsing to be changed. * <p> * Calling this method changes the state of the builder such that all * subsequent builder method calls will parse text in case sensitive mode. * See {@link #parseCaseInsensitive} for the opposite setting. * The parse case sensitive/insensitive methods may be called at any point * in the builder, thus the parser can swap between case parsing modes * multiple times during the parse. * <p> * Since the default is case sensitive, this method should only be used after * a previous call to {@code #parseCaseInsensitive}. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder parseCaseSensitive() { appendInternal(SettingsParser.SENSITIVE); return this; } /** * Changes the parse style to be case insensitive for the remainder of the formatter. * <p> * Parsing can be case sensitive or insensitive - by default it is case sensitive. * This method allows the case sensitivity setting of parsing to be changed. * <p> * Calling this method changes the state of the builder such that all * subsequent builder method calls will parse text in case insensitive mode. * See {@link #parseCaseSensitive()} for the opposite setting. * The parse case sensitive/insensitive methods may be called at any point * in the builder, thus the parser can swap between case parsing modes * multiple times during the parse. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder parseCaseInsensitive() { appendInternal(SettingsParser.INSENSITIVE); return this; } //----------------------------------------------------------------------- /** * Changes the parse style to be strict for the remainder of the formatter. * <p> * Parsing can be strict or lenient - by default its strict. * This controls the degree of flexibility in matching the text and sign styles. * <p> * When used, this method changes the parsing to be strict from this point onwards. * As strict is the default, this is normally only needed after calling {@link #parseLenient()}. * The change will remain in force until the end of the formatter that is eventually * constructed or until {@code parseLenient} is called. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder parseStrict() { appendInternal(SettingsParser.STRICT); return this; } /** * Changes the parse style to be lenient for the remainder of the formatter. * Note that case sensitivity is set separately to this method. * <p> * Parsing can be strict or lenient - by default its strict. * This controls the degree of flexibility in matching the text and sign styles. * Applications calling this method should typically also call {@link #parseCaseInsensitive()}. * <p> * When used, this method changes the parsing to be lenient from this point onwards. * The change will remain in force until the end of the formatter that is eventually * constructed or until {@code parseStrict} is called. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder parseLenient() { appendInternal(SettingsParser.LENIENT); return this; } //----------------------------------------------------------------------- /** * Appends a default value for a field to the formatter for use in parsing. * <p> * This appends an instruction to the builder to inject a default value * into the parsed result. This is especially useful in conjunction with * optional parts of the formatter. * <p> * For example, consider a formatter that parses the year, followed by * an optional month, with a further optional day-of-month. Using such a * formatter would require the calling code to check whether a full date, * year-month or just a year had been parsed. This method can be used to * default the month and day-of-month to a sensible value, such as the * first of the month, allowing the calling code to always get a date. * <p> * During formatting, this method has no effect. * <p> * During parsing, the current state of the parse is inspected. * If the specified field has no associated value, because it has not been * parsed successfully at that point, then the specified value is injected * into the parse result. Injection is immediate, thus the field-value pair * will be visible to any subsequent elements in the formatter. * As such, this method is normally called at the end of the builder. * * @param field the field to default the value of, not null * @param value the value to default the field to * @return this, for chaining, not null */ public DateTimeFormatterBuilder parseDefaulting(TemporalField field, long value) { Objects.requireNonNull(field, "field"); appendInternal(new DefaultValueParser(field, value)); return this; } //----------------------------------------------------------------------- /** * Appends the value of a date-time field to the formatter using a normal * output style. * <p> * The value of the field will be output during a format. * If the value cannot be obtained then an exception will be thrown. * <p> * The value will be printed as per the normal format of an integer value. * Only negative numbers will be signed. No padding will be added. * <p> * The parser for a variable width value such as this normally behaves greedily, * requiring one digit, but accepting as many digits as possible. * This behavior can be affected by 'adjacent value parsing'. * See {@link #appendValue(java.time.temporal.TemporalField, int)} for full details. * * @param field the field to append, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendValue(TemporalField field) { Objects.requireNonNull(field, "field"); appendValue(new NumberPrinterParser(field, 1, 19, SignStyle.NORMAL)); return this; } /** * Appends the value of a date-time field to the formatter using a fixed * width, zero-padded approach. * <p> * The value of the field will be output during a format. * If the value cannot be obtained then an exception will be thrown. * <p> * The value will be zero-padded on the left. If the size of the value * means that it cannot be printed within the width then an exception is thrown. * If the value of the field is negative then an exception is thrown during formatting. * <p> * This method supports a special technique of parsing known as 'adjacent value parsing'. * This technique solves the problem where a value, variable or fixed width, is followed by one or more * fixed length values. The standard parser is greedy, and thus it would normally * steal the digits that are needed by the fixed width value parsers that follow the * variable width one. * <p> * No action is required to initiate 'adjacent value parsing'. * When a call to {@code appendValue} is made, the builder * enters adjacent value parsing setup mode. If the immediately subsequent method * call or calls on the same builder are for a fixed width value, then the parser will reserve * space so that the fixed width values can be parsed. * <p> * For example, consider {@code builder.appendValue(YEAR).appendValue(MONTH_OF_YEAR, 2);} * The year is a variable width parse of between 1 and 19 digits. * The month is a fixed width parse of 2 digits. * Because these were appended to the same builder immediately after one another, * the year parser will reserve two digits for the month to parse. * Thus, the text '201106' will correctly parse to a year of 2011 and a month of 6. * Without adjacent value parsing, the year would greedily parse all six digits and leave * nothing for the month. * <p> * Adjacent value parsing applies to each set of fixed width not-negative values in the parser * that immediately follow any kind of value, variable or fixed width. * Calling any other append method will end the setup of adjacent value parsing. * Thus, in the unlikely event that you need to avoid adjacent value parsing behavior, * simply add the {@code appendValue} to another {@code DateTimeFormatterBuilder} * and add that to this builder. * <p> * If adjacent parsing is active, then parsing must match exactly the specified * number of digits in both strict and lenient modes. * In addition, no positive or negative sign is permitted. * * @param field the field to append, not null * @param width the width of the printed field, from 1 to 19 * @return this, for chaining, not null * @throws IllegalArgumentException if the width is invalid */ public DateTimeFormatterBuilder appendValue(TemporalField field, int width) { Objects.requireNonNull(field, "field"); if (width < 1 || width > 19) { throw new IllegalArgumentException("The width must be from 1 to 19 inclusive but was " + width); } NumberPrinterParser pp = new NumberPrinterParser(field, width, width, SignStyle.NOT_NEGATIVE); appendValue(pp); return this; } /** * Appends the value of a date-time field to the formatter providing full * control over formatting. * <p> * The value of the field will be output during a format. * If the value cannot be obtained then an exception will be thrown. * <p> * This method provides full control of the numeric formatting, including * zero-padding and the positive/negative sign. * <p> * The parser for a variable width value such as this normally behaves greedily, * accepting as many digits as possible. * This behavior can be affected by 'adjacent value parsing'. * See {@link #appendValue(java.time.temporal.TemporalField, int)} for full details. * <p> * In strict parsing mode, the minimum number of parsed digits is {@code minWidth} * and the maximum is {@code maxWidth}. * In lenient parsing mode, the minimum number of parsed digits is one * and the maximum is 19 (except as limited by adjacent value parsing). * <p> * If this method is invoked with equal minimum and maximum widths and a sign style of * {@code NOT_NEGATIVE} then it delegates to {@code appendValue(TemporalField,int)}. * In this scenario, the formatting and parsing behavior described there occur. * * @param field the field to append, not null * @param minWidth the minimum field width of the printed field, from 1 to 19 * @param maxWidth the maximum field width of the printed field, from 1 to 19 * @param signStyle the positive/negative output style, not null * @return this, for chaining, not null * @throws IllegalArgumentException if the widths are invalid */ public DateTimeFormatterBuilder appendValue(TemporalField field, int minWidth, int maxWidth, SignStyle signStyle) { if (minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE) { return appendValue(field, maxWidth); } Objects.requireNonNull(field, "field"); Objects.requireNonNull(signStyle, "signStyle"); if (minWidth < 1 || minWidth > 19) { throw new IllegalArgumentException( "The minimum width must be from 1 to 19 inclusive but was " + minWidth); } if (maxWidth < 1 || maxWidth > 19) { throw new IllegalArgumentException( "The maximum width must be from 1 to 19 inclusive but was " + maxWidth); } if (maxWidth < minWidth) { throw new IllegalArgumentException( "The maximum width must exceed or equal the minimum width but " + maxWidth + " < " + minWidth); } NumberPrinterParser pp = new NumberPrinterParser(field, minWidth, maxWidth, signStyle); appendValue(pp); return this; } //----------------------------------------------------------------------- /** * Appends the reduced value of a date-time field to the formatter. * <p> * Since fields such as year vary by chronology, it is recommended to use the * {@link #appendValueReduced(TemporalField, int, int, ChronoLocalDate)} date} * variant of this method in most cases. This variant is suitable for * simple fields or working with only the ISO chronology. * <p> * For formatting, the {@code width} and {@code maxWidth} are used to * determine the number of characters to format. * If they are equal then the format is fixed width. * If the value of the field is within the range of the {@code baseValue} using * {@code width} characters then the reduced value is formatted otherwise the value is * truncated to fit {@code maxWidth}. * The rightmost characters are output to match the width, left padding with zero. * <p> * For strict parsing, the number of characters allowed by {@code width} to {@code maxWidth} are parsed. * For lenient parsing, the number of characters must be at least 1 and less than 10. * If the number of digits parsed is equal to {@code width} and the value is positive, * the value of the field is computed to be the first number greater than * or equal to the {@code baseValue} with the same least significant characters, * otherwise the value parsed is the field value. * This allows a reduced value to be entered for values in range of the baseValue * and width and absolute values can be entered for values outside the range. * <p> * For example, a base value of {@code 1980} and a width of {@code 2} will have * valid values from {@code 1980} to {@code 2079}. * During parsing, the text {@code "12"} will result in the value {@code 2012} as that * is the value within the range where the last two characters are "12". * By contrast, parsing the text {@code "1915"} will result in the value {@code 1915}. * * @param field the field to append, not null * @param width the field width of the printed and parsed field, from 1 to 10 * @param maxWidth the maximum field width of the printed field, from 1 to 10 * @param baseValue the base value of the range of valid values * @return this, for chaining, not null * @throws IllegalArgumentException if the width or base value is invalid */ public DateTimeFormatterBuilder appendValueReduced(TemporalField field, int width, int maxWidth, int baseValue) { Objects.requireNonNull(field, "field"); ReducedPrinterParser pp = new ReducedPrinterParser(field, width, maxWidth, baseValue, null); appendValue(pp); return this; } /** * Appends the reduced value of a date-time field to the formatter. * <p> * This is typically used for formatting and parsing a two digit year. * <p> * The base date is used to calculate the full value during parsing. * For example, if the base date is 1950-01-01 then parsed values for * a two digit year parse will be in the range 1950-01-01 to 2049-12-31. * Only the year would be extracted from the date, thus a base date of * 1950-08-25 would also parse to the range 1950-01-01 to 2049-12-31. * This behavior is necessary to support fields such as week-based-year * or other calendar systems where the parsed value does not align with * standard ISO years. * <p> * The exact behavior is as follows. Parse the full set of fields and * determine the effective chronology using the last chronology if * it appears more than once. Then convert the base date to the * effective chronology. Then extract the specified field from the * chronology-specific base date and use it to determine the * {@code baseValue} used below. * <p> * For formatting, the {@code width} and {@code maxWidth} are used to * determine the number of characters to format. * If they are equal then the format is fixed width. * If the value of the field is within the range of the {@code baseValue} using * {@code width} characters then the reduced value is formatted otherwise the value is * truncated to fit {@code maxWidth}. * The rightmost characters are output to match the width, left padding with zero. * <p> * For strict parsing, the number of characters allowed by {@code width} to {@code maxWidth} are parsed. * For lenient parsing, the number of characters must be at least 1 and less than 10. * If the number of digits parsed is equal to {@code width} and the value is positive, * the value of the field is computed to be the first number greater than * or equal to the {@code baseValue} with the same least significant characters, * otherwise the value parsed is the field value. * This allows a reduced value to be entered for values in range of the baseValue * and width and absolute values can be entered for values outside the range. * <p> * For example, a base value of {@code 1980} and a width of {@code 2} will have * valid values from {@code 1980} to {@code 2079}. * During parsing, the text {@code "12"} will result in the value {@code 2012} as that * is the value within the range where the last two characters are "12". * By contrast, parsing the text {@code "1915"} will result in the value {@code 1915}. * * @param field the field to append, not null * @param width the field width of the printed and parsed field, from 1 to 10 * @param maxWidth the maximum field width of the printed field, from 1 to 10 * @param baseDate the base date used to calculate the base value for the range * of valid values in the parsed chronology, not null * @return this, for chaining, not null * @throws IllegalArgumentException if the width or base value is invalid */ public DateTimeFormatterBuilder appendValueReduced(TemporalField field, int width, int maxWidth, ChronoLocalDate baseDate) { Objects.requireNonNull(field, "field"); Objects.requireNonNull(baseDate, "baseDate"); ReducedPrinterParser pp = new ReducedPrinterParser(field, width, maxWidth, 0, baseDate); appendValue(pp); return this; } /** * Appends a fixed or variable width printer-parser handling adjacent value mode. * If a PrinterParser is not active then the new PrinterParser becomes * the active PrinterParser. * Otherwise, the active PrinterParser is modified depending on the new PrinterParser. * If the new PrinterParser is fixed width and has sign style {@code NOT_NEGATIVE} * then its width is added to the active PP and * the new PrinterParser is forced to be fixed width. * If the new PrinterParser is variable width, the active PrinterParser is changed * to be fixed width and the new PrinterParser becomes the active PP. * * @param pp the printer-parser, not null * @return this, for chaining, not null */ private DateTimeFormatterBuilder appendValue(NumberPrinterParser pp) { if (active.valueParserIndex >= 0) { final int activeValueParser = active.valueParserIndex; // adjacent parsing mode, update setting in previous parsers NumberPrinterParser basePP = (NumberPrinterParser) active.printerParsers.get(activeValueParser); if (pp.minWidth == pp.maxWidth && pp.signStyle == SignStyle.NOT_NEGATIVE) { // Append the width to the subsequentWidth of the active parser basePP = basePP.withSubsequentWidth(pp.maxWidth); // Append the new parser as a fixed width appendInternal(pp.withFixedWidth()); // Retain the previous active parser active.valueParserIndex = activeValueParser; } else { // Modify the active parser to be fixed width basePP = basePP.withFixedWidth(); // The new parser becomes the mew active parser active.valueParserIndex = appendInternal(pp); } // Replace the modified parser with the updated one active.printerParsers.set(activeValueParser, basePP); } else { // The new Parser becomes the active parser active.valueParserIndex = appendInternal(pp); } return this; } //----------------------------------------------------------------------- /** * Appends the fractional value of a date-time field to the formatter. * <p> * The fractional value of the field will be output including the * preceding decimal point. The preceding value is not output. * For example, the second-of-minute value of 15 would be output as {@code .25}. * <p> * The width of the printed fraction can be controlled. Setting the * minimum width to zero will cause no output to be generated. * The printed fraction will have the minimum width necessary between * the minimum and maximum widths - trailing zeroes are omitted. * No rounding occurs due to the maximum width - digits are simply dropped. * <p> * When parsing in strict mode, the number of parsed digits must be between * the minimum and maximum width. In strict mode, if the minimum and maximum widths * are equal and there is no decimal point then the parser will * participate in adjacent value parsing, see * {@link appendValue(java.time.temporal.TemporalField, int)}. When parsing in lenient mode, * the minimum width is considered to be zero and the maximum is nine. * <p> * If the value cannot be obtained then an exception will be thrown. * If the value is negative an exception will be thrown. * If the field does not have a fixed set of valid values then an * exception will be thrown. * If the field value in the date-time to be printed is invalid it * cannot be printed and an exception will be thrown. * * @param field the field to append, not null * @param minWidth the minimum width of the field excluding the decimal point, from 0 to 9 * @param maxWidth the maximum width of the field excluding the decimal point, from 1 to 9 * @param decimalPoint whether to output the localized decimal point symbol * @return this, for chaining, not null * @throws IllegalArgumentException if the field has a variable set of valid values or * either width is invalid */ public DateTimeFormatterBuilder appendFraction(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) { if (minWidth == maxWidth && decimalPoint == false) { // adjacent parsing appendValue(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint)); } else { appendInternal(new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint)); } return this; } //----------------------------------------------------------------------- /** * Appends the text of a date-time field to the formatter using the full * text style. * <p> * The text of the field will be output during a format. * The value must be within the valid range of the field. * If the value cannot be obtained then an exception will be thrown. * If the field has no textual representation, then the numeric value will be used. * <p> * The value will be printed as per the normal format of an integer value. * Only negative numbers will be signed. No padding will be added. * * @param field the field to append, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendText(TemporalField field) { return appendText(field, TextStyle.FULL); } /** * Appends the text of a date-time field to the formatter. * <p> * The text of the field will be output during a format. * The value must be within the valid range of the field. * If the value cannot be obtained then an exception will be thrown. * If the field has no textual representation, then the numeric value will be used. * <p> * The value will be printed as per the normal format of an integer value. * Only negative numbers will be signed. No padding will be added. * * @param field the field to append, not null * @param textStyle the text style to use, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendText(TemporalField field, TextStyle textStyle) { Objects.requireNonNull(field, "field"); Objects.requireNonNull(textStyle, "textStyle"); appendInternal(new TextPrinterParser(field, textStyle, DateTimeTextProvider.getInstance())); return this; } /** * Appends the text of a date-time field to the formatter using the specified * map to supply the text. * <p> * The standard text outputting methods use the localized text in the JDK. * This method allows that text to be specified directly. * The supplied map is not validated by the builder to ensure that formatting or * parsing is possible, thus an invalid map may throw an error during later use. * <p> * Supplying the map of text provides considerable flexibility in formatting and parsing. * For example, a legacy application might require or supply the months of the * year as "JNY", "FBY", "MCH" etc. These do not match the standard set of text * for localized month names. Using this method, a map can be created which * defines the connection between each value and the text: * <pre> * Map<Long, String> map = new HashMap<>(); * map.put(1L, "JNY"); * map.put(2L, "FBY"); * map.put(3L, "MCH"); * ... * builder.appendText(MONTH_OF_YEAR, map); * </pre> * <p> * Other uses might be to output the value with a suffix, such as "1st", "2nd", "3rd", * or as Roman numerals "I", "II", "III", "IV". * <p> * During formatting, the value is obtained and checked that it is in the valid range. * If text is not available for the value then it is output as a number. * During parsing, the parser will match against the map of text and numeric values. * * @param field the field to append, not null * @param textLookup the map from the value to the text * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendText(TemporalField field, Map<Long, String> textLookup) { Objects.requireNonNull(field, "field"); Objects.requireNonNull(textLookup, "textLookup"); Map<Long, String> copy = new LinkedHashMap<>(textLookup); Map<TextStyle, Map<Long, String>> map = Collections.singletonMap(TextStyle.FULL, copy); final LocaleStore store = new LocaleStore(map); DateTimeTextProvider provider = new DateTimeTextProvider() { @Override public String getText(Chronology chrono, TemporalField field, long value, TextStyle style, Locale locale) { return store.getText(value, style); } @Override public String getText(TemporalField field, long value, TextStyle style, Locale locale) { return store.getText(value, style); } @Override public Iterator<Entry<String, Long>> getTextIterator(Chronology chrono, TemporalField field, TextStyle style, Locale locale) { return store.getTextIterator(style); } @Override public Iterator<Entry<String, Long>> getTextIterator(TemporalField field, TextStyle style, Locale locale) { return store.getTextIterator(style); } }; appendInternal(new TextPrinterParser(field, TextStyle.FULL, provider)); return this; } //----------------------------------------------------------------------- /** * Appends an instant using ISO-8601 to the formatter, formatting fractional * digits in groups of three. * <p> * Instants have a fixed output format. * They are converted to a date-time with a zone-offset of UTC and formatted * using the standard ISO-8601 format. * With this method, formatting nano-of-second outputs zero, three, six * or nine digits as necessary. * The localized decimal style is not used. * <p> * The instant is obtained using {@link ChronoField#INSTANT_SECONDS INSTANT_SECONDS} * and optionally {@code NANO_OF_SECOND}. The value of {@code INSTANT_SECONDS} * may be outside the maximum range of {@code LocalDateTime}. * <p> * The {@linkplain ResolverStyle resolver style} has no effect on instant parsing. * The end-of-day time of '24:00' is handled as midnight at the start of the following day. * The leap-second time of '23:59:59' is handled to some degree, see * {@link DateTimeFormatter#parsedLeapSecond()} for full details. * <p> * When formatting, the instant will always be suffixed by 'Z' to indicate UTC. * When parsing, the behaviour of {@link DateTimeFormatterBuilder#appendOffsetId()} * will be used to parse the offset, converting the instant to UTC as necessary. * <p> * An alternative to this method is to format/parse the instant as a single * epoch-seconds value. That is achieved using {@code appendValue(INSTANT_SECONDS)}. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendInstant() { appendInternal(new InstantPrinterParser(-2)); return this; } /** * Appends an instant using ISO-8601 to the formatter with control over * the number of fractional digits. * <p> * Instants have a fixed output format, although this method provides some * control over the fractional digits. They are converted to a date-time * with a zone-offset of UTC and printed using the standard ISO-8601 format. * The localized decimal style is not used. * <p> * The {@code fractionalDigits} parameter allows the output of the fractional * second to be controlled. Specifying zero will cause no fractional digits * to be output. From 1 to 9 will output an increasing number of digits, using * zero right-padding if necessary. The special value -1 is used to output as * many digits as necessary to avoid any trailing zeroes. * <p> * When parsing in strict mode, the number of parsed digits must match the * fractional digits. When parsing in lenient mode, any number of fractional * digits from zero to nine are accepted. * <p> * The instant is obtained using {@link ChronoField#INSTANT_SECONDS INSTANT_SECONDS} * and optionally {@code NANO_OF_SECOND}. The value of {@code INSTANT_SECONDS} * may be outside the maximum range of {@code LocalDateTime}. * <p> * The {@linkplain ResolverStyle resolver style} has no effect on instant parsing. * The end-of-day time of '24:00' is handled as midnight at the start of the following day. * The leap-second time of '23:59:60' is handled to some degree, see * {@link DateTimeFormatter#parsedLeapSecond()} for full details. * <p> * An alternative to this method is to format/parse the instant as a single * epoch-seconds value. That is achieved using {@code appendValue(INSTANT_SECONDS)}. * * @param fractionalDigits the number of fractional second digits to format with, * from 0 to 9, or -1 to use as many digits as necessary * @return this, for chaining, not null * @throws IllegalArgumentException if the number of fractional digits is invalid */ public DateTimeFormatterBuilder appendInstant(int fractionalDigits) { if (fractionalDigits < -1 || fractionalDigits > 9) { throw new IllegalArgumentException( "The fractional digits must be from -1 to 9 inclusive but was " + fractionalDigits); } appendInternal(new InstantPrinterParser(fractionalDigits)); return this; } //----------------------------------------------------------------------- /** * Appends the zone offset, such as '+01:00', to the formatter. * <p> * This appends an instruction to format/parse the offset ID to the builder. * This is equivalent to calling {@code appendOffset("+HH:mm:ss", "Z")}. * See {@link #appendOffset(String, String)} for details on formatting * and parsing. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendOffsetId() { appendInternal(OffsetIdPrinterParser.INSTANCE_ID_Z); return this; } /** * Appends the zone offset, such as '+01:00', to the formatter. * <p> * This appends an instruction to format/parse the offset ID to the builder. * <p> * During formatting, the offset is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#offset()}. * It will be printed using the format defined below. * If the offset cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * When parsing in strict mode, the input must contain the mandatory * and optional elements are defined by the specified pattern. * If the offset cannot be parsed then an exception is thrown unless * the section of the formatter is optional. * <p> * When parsing in lenient mode, only the hours are mandatory - minutes * and seconds are optional. The colons are required if the specified * pattern contains a colon. If the specified pattern is "+HH", the * presence of colons is determined by whether the character after the * hour digits is a colon or not. * If the offset cannot be parsed then an exception is thrown unless * the section of the formatter is optional. * <p> * The format of the offset is controlled by a pattern which must be one * of the following: * <ul> * <li>{@code +HH} - hour only, ignoring minute and second * <li>{@code +HHmm} - hour, with minute if non-zero, ignoring second, no colon * <li>{@code +HH:mm} - hour, with minute if non-zero, ignoring second, with colon * <li>{@code +HHMM} - hour and minute, ignoring second, no colon * <li>{@code +HH:MM} - hour and minute, ignoring second, with colon * <li>{@code +HHMMss} - hour and minute, with second if non-zero, no colon * <li>{@code +HH:MM:ss} - hour and minute, with second if non-zero, with colon * <li>{@code +HHMMSS} - hour, minute and second, no colon * <li>{@code +HH:MM:SS} - hour, minute and second, with colon * <li>{@code +HHmmss} - hour, with minute if non-zero or with minute and * second if non-zero, no colon * <li>{@code +HH:mm:ss} - hour, with minute if non-zero or with minute and * second if non-zero, with colon * <li>{@code +H} - hour only, ignoring minute and second * <li>{@code +Hmm} - hour, with minute if non-zero, ignoring second, no colon * <li>{@code +H:mm} - hour, with minute if non-zero, ignoring second, with colon * <li>{@code +HMM} - hour and minute, ignoring second, no colon * <li>{@code +H:MM} - hour and minute, ignoring second, with colon * <li>{@code +HMMss} - hour and minute, with second if non-zero, no colon * <li>{@code +H:MM:ss} - hour and minute, with second if non-zero, with colon * <li>{@code +HMMSS} - hour, minute and second, no colon * <li>{@code +H:MM:SS} - hour, minute and second, with colon * <li>{@code +Hmmss} - hour, with minute if non-zero or with minute and * second if non-zero, no colon * <li>{@code +H:mm:ss} - hour, with minute if non-zero or with minute and * second if non-zero, with colon * </ul> * Patterns containing "HH" will format and parse a two digit hour, * zero-padded if necessary. Patterns containing "H" will format with no * zero-padding, and parse either one or two digits. * In lenient mode, the parser will be greedy and parse the maximum digits possible. * The "no offset" text controls what text is printed when the total amount of * the offset fields to be output is zero. * Example values would be 'Z', '+00:00', 'UTC' or 'GMT'. * Three formats are accepted for parsing UTC - the "no offset" text, and the * plus and minus versions of zero defined by the pattern. * * @param pattern the pattern to use, not null * @param noOffsetText the text to use when the offset is zero, not null * @return this, for chaining, not null * @throws IllegalArgumentException if the pattern is invalid */ public DateTimeFormatterBuilder appendOffset(String pattern, String noOffsetText) { appendInternal(new OffsetIdPrinterParser(pattern, noOffsetText)); return this; } /** * Appends the localized zone offset, such as 'GMT+01:00', to the formatter. * <p> * This appends a localized zone offset to the builder, the format of the * localized offset is controlled by the specified {@link FormatStyle style} * to this method: * <ul> * <li>{@link TextStyle#FULL full} - formats with localized offset text, such * as 'GMT, 2-digit hour and minute field, optional second field if non-zero, * and colon. * <li>{@link TextStyle#SHORT short} - formats with localized offset text, * such as 'GMT, hour without leading zero, optional 2-digit minute and * second if non-zero, and colon. * </ul> * <p> * During formatting, the offset is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#offset()}. * If the offset cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, the offset is parsed using the format defined above. * If the offset cannot be parsed then an exception is thrown unless the * section of the formatter is optional. * * @param style the format style to use, not null * @return this, for chaining, not null * @throws IllegalArgumentException if style is neither {@link TextStyle#FULL * full} nor {@link TextStyle#SHORT short} */ public DateTimeFormatterBuilder appendLocalizedOffset(TextStyle style) { Objects.requireNonNull(style, "style"); if (style != TextStyle.FULL && style != TextStyle.SHORT) { throw new IllegalArgumentException("Style must be either full or short"); } appendInternal(new LocalizedOffsetIdPrinterParser(style)); return this; } //----------------------------------------------------------------------- /** * Appends the time-zone ID, such as 'Europe/Paris' or '+02:00', to the formatter. * <p> * This appends an instruction to format/parse the zone ID to the builder. * The zone ID is obtained in a strict manner suitable for {@code ZonedDateTime}. * By contrast, {@code OffsetDateTime} does not have a zone ID suitable * for use with this method, see {@link #appendZoneOrOffsetId()}. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zoneId()}. * It will be printed using the result of {@link ZoneId#getId()}. * If the zone cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, the text must match a known zone or offset. * There are two types of zone ID, offset-based, such as '+01:30' and * region-based, such as 'Europe/London'. These are parsed differently. * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser * expects an offset-based zone and will not match region-based zones. * The offset ID, such as '+02:30', may be at the start of the parse, * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is * equivalent to using {@link #appendOffset(String, String)} using the * arguments 'HH:MM:ss' and the no offset string '0'. * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot * match a following offset ID, then {@link ZoneOffset#UTC} is selected. * In all other cases, the list of known region-based zones is used to * find the longest available match. If no match is found, and the parse * starts with 'Z', then {@code ZoneOffset.UTC} is selected. * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. * <p> * For example, the following will parse: * <pre> * "Europe/London" -- ZoneId.of("Europe/London") * "Z" -- ZoneOffset.UTC * "UT" -- ZoneId.of("UT") * "UTC" -- ZoneId.of("UTC") * "GMT" -- ZoneId.of("GMT") * "+01:30" -- ZoneOffset.of("+01:30") * "UT+01:30" -- ZoneOffset.of("+01:30") * "UTC+01:30" -- ZoneOffset.of("+01:30") * "GMT+01:30" -- ZoneOffset.of("+01:30") * </pre> * * @return this, for chaining, not null * @see #appendZoneRegionId() */ public DateTimeFormatterBuilder appendZoneId() { appendInternal(new ZoneIdPrinterParser(TemporalQueries.zoneId(), "ZoneId()")); return this; } /** * Appends the time-zone region ID, such as 'Europe/Paris', to the formatter, * rejecting the zone ID if it is a {@code ZoneOffset}. * <p> * This appends an instruction to format/parse the zone ID to the builder * only if it is a region-based ID. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zoneId()}. * If the zone is a {@code ZoneOffset} or it cannot be obtained then * an exception is thrown unless the section of the formatter is optional. * If the zone is not an offset, then the zone will be printed using * the zone ID from {@link ZoneId#getId()}. * <p> * During parsing, the text must match a known zone or offset. * There are two types of zone ID, offset-based, such as '+01:30' and * region-based, such as 'Europe/London'. These are parsed differently. * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser * expects an offset-based zone and will not match region-based zones. * The offset ID, such as '+02:30', may be at the start of the parse, * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is * equivalent to using {@link #appendOffset(String, String)} using the * arguments 'HH:MM:ss' and the no offset string '0'. * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot * match a following offset ID, then {@link ZoneOffset#UTC} is selected. * In all other cases, the list of known region-based zones is used to * find the longest available match. If no match is found, and the parse * starts with 'Z', then {@code ZoneOffset.UTC} is selected. * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. * <p> * For example, the following will parse: * <pre> * "Europe/London" -- ZoneId.of("Europe/London") * "Z" -- ZoneOffset.UTC * "UT" -- ZoneId.of("UT") * "UTC" -- ZoneId.of("UTC") * "GMT" -- ZoneId.of("GMT") * "+01:30" -- ZoneOffset.of("+01:30") * "UT+01:30" -- ZoneOffset.of("+01:30") * "UTC+01:30" -- ZoneOffset.of("+01:30") * "GMT+01:30" -- ZoneOffset.of("+01:30") * </pre> * <p> * Note that this method is identical to {@code appendZoneId()} except * in the mechanism used to obtain the zone. * Note also that parsing accepts offsets, whereas formatting will never * produce one. * * @return this, for chaining, not null * @see #appendZoneId() */ public DateTimeFormatterBuilder appendZoneRegionId() { appendInternal(new ZoneIdPrinterParser(QUERY_REGION_ONLY, "ZoneRegionId()")); return this; } /** * Appends the time-zone ID, such as 'Europe/Paris' or '+02:00', to * the formatter, using the best available zone ID. * <p> * This appends an instruction to format/parse the best available * zone or offset ID to the builder. * The zone ID is obtained in a lenient manner that first attempts to * find a true zone ID, such as that on {@code ZonedDateTime}, and * then attempts to find an offset, such as that on {@code OffsetDateTime}. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zone()}. * It will be printed using the result of {@link ZoneId#getId()}. * If the zone cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, the text must match a known zone or offset. * There are two types of zone ID, offset-based, such as '+01:30' and * region-based, such as 'Europe/London'. These are parsed differently. * If the parse starts with '+', '-', 'UT', 'UTC' or 'GMT', then the parser * expects an offset-based zone and will not match region-based zones. * The offset ID, such as '+02:30', may be at the start of the parse, * or prefixed by 'UT', 'UTC' or 'GMT'. The offset ID parsing is * equivalent to using {@link #appendOffset(String, String)} using the * arguments 'HH:MM:ss' and the no offset string '0'. * If the parse starts with 'UT', 'UTC' or 'GMT', and the parser cannot * match a following offset ID, then {@link ZoneOffset#UTC} is selected. * In all other cases, the list of known region-based zones is used to * find the longest available match. If no match is found, and the parse * starts with 'Z', then {@code ZoneOffset.UTC} is selected. * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. * <p> * For example, the following will parse: * <pre> * "Europe/London" -- ZoneId.of("Europe/London") * "Z" -- ZoneOffset.UTC * "UT" -- ZoneId.of("UT") * "UTC" -- ZoneId.of("UTC") * "GMT" -- ZoneId.of("GMT") * "+01:30" -- ZoneOffset.of("+01:30") * "UT+01:30" -- ZoneOffset.of("UT+01:30") * "UTC+01:30" -- ZoneOffset.of("UTC+01:30") * "GMT+01:30" -- ZoneOffset.of("GMT+01:30") * </pre> * <p> * Note that this method is identical to {@code appendZoneId()} except * in the mechanism used to obtain the zone. * * @return this, for chaining, not null * @see #appendZoneId() */ public DateTimeFormatterBuilder appendZoneOrOffsetId() { appendInternal(new ZoneIdPrinterParser(TemporalQueries.zone(), "ZoneOrOffsetId()")); return this; } /** * Appends the time-zone name, such as 'British Summer Time', to the formatter. * <p> * This appends an instruction to format/parse the textual name of the zone to * the builder. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zoneId()}. * If the zone is a {@code ZoneOffset} it will be printed using the * result of {@link ZoneOffset#getId()}. * If the zone is not an offset, the textual name will be looked up * for the locale set in the {@link DateTimeFormatter}. * If the temporal object being printed represents an instant, or if it is a * local date-time that is not in a daylight saving gap or overlap then * the text will be the summer or winter time text as appropriate. * If the lookup for text does not find any suitable result, then the * {@link ZoneId#getId() ID} will be printed. * If the zone cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, either the textual zone name, the zone ID or the offset * is accepted. Many textual zone names are not unique, such as CST can be * for both "Central Standard Time" and "China Standard Time". In this * situation, the zone id will be determined by the region information from * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard * zone id for that area, for example, America/New_York for the America Eastern * zone. The {@link #appendZoneText(TextStyle, Set)} may be used * to specify a set of preferred {@link ZoneId} in this situation. * * @param textStyle the text style to use, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendZoneText(TextStyle textStyle) { appendInternal(new ZoneTextPrinterParser(textStyle, null, false)); return this; } /** * Appends the time-zone name, such as 'British Summer Time', to the formatter. * <p> * This appends an instruction to format/parse the textual name of the zone to * the builder. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zoneId()}. * If the zone is a {@code ZoneOffset} it will be printed using the * result of {@link ZoneOffset#getId()}. * If the zone is not an offset, the textual name will be looked up * for the locale set in the {@link DateTimeFormatter}. * If the temporal object being printed represents an instant, or if it is a * local date-time that is not in a daylight saving gap or overlap, then the text * will be the summer or winter time text as appropriate. * If the lookup for text does not find any suitable result, then the * {@link ZoneId#getId() ID} will be printed. * If the zone cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, either the textual zone name, the zone ID or the offset * is accepted. Many textual zone names are not unique, such as CST can be * for both "Central Standard Time" and "China Standard Time". In this * situation, the zone id will be determined by the region information from * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard * zone id for that area, for example, America/New_York for the America Eastern * zone. This method also allows a set of preferred {@link ZoneId} to be * specified for parsing. The matched preferred zone id will be used if the * textural zone name being parsed is not unique. * <p> * If the zone cannot be parsed then an exception is thrown unless the * section of the formatter is optional. * * @param textStyle the text style to use, not null * @param preferredZones the set of preferred zone ids, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendZoneText(TextStyle textStyle, Set<ZoneId> preferredZones) { Objects.requireNonNull(preferredZones, "preferredZones"); appendInternal(new ZoneTextPrinterParser(textStyle, preferredZones, false)); return this; } //---------------------------------------------------------------------- /** * Appends the generic time-zone name, such as 'Pacific Time', to the formatter. * <p> * This appends an instruction to format/parse the generic textual * name of the zone to the builder. The generic name is the same throughout the whole * year, ignoring any daylight saving changes. For example, 'Pacific Time' is the * generic name, whereas 'Pacific Standard Time' and 'Pacific Daylight Time' are the * specific names, see {@link #appendZoneText(TextStyle)}. * <p> * During formatting, the zone is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#zoneId()}. * If the zone is a {@code ZoneOffset} it will be printed using the * result of {@link ZoneOffset#getId()}. * If the zone is not an offset, the textual name will be looked up * for the locale set in the {@link DateTimeFormatter}. * If the lookup for text does not find any suitable result, then the * {@link ZoneId#getId() ID} will be printed. * If the zone cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, either the textual zone name, the zone ID or the offset * is accepted. Many textual zone names are not unique, such as CST can be * for both "Central Standard Time" and "China Standard Time". In this * situation, the zone id will be determined by the region information from * formatter's {@link DateTimeFormatter#getLocale() locale} and the standard * zone id for that area, for example, America/New_York for the America Eastern zone. * The {@link #appendGenericZoneText(TextStyle, Set)} may be used * to specify a set of preferred {@link ZoneId} in this situation. * * @param textStyle the text style to use, not null * @return this, for chaining, not null * @since 9 */ public DateTimeFormatterBuilder appendGenericZoneText(TextStyle textStyle) { appendInternal(new ZoneTextPrinterParser(textStyle, null, true)); return this; } /** * Appends the generic time-zone name, such as 'Pacific Time', to the formatter. * <p> * This appends an instruction to format/parse the generic textual * name of the zone to the builder. The generic name is the same throughout the whole * year, ignoring any daylight saving changes. For example, 'Pacific Time' is the * generic name, whereas 'Pacific Standard Time' and 'Pacific Daylight Time' are the * specific names, see {@link #appendZoneText(TextStyle)}. * <p> * This method also allows a set of preferred {@link ZoneId} to be * specified for parsing. The matched preferred zone id will be used if the * textural zone name being parsed is not unique. * <p> * See {@link #appendGenericZoneText(TextStyle)} for details about * formatting and parsing. * * @param textStyle the text style to use, not null * @param preferredZones the set of preferred zone ids, not null * @return this, for chaining, not null * @since 9 */ public DateTimeFormatterBuilder appendGenericZoneText(TextStyle textStyle, Set<ZoneId> preferredZones) { appendInternal(new ZoneTextPrinterParser(textStyle, preferredZones, true)); return this; } //----------------------------------------------------------------------- /** * Appends the chronology ID, such as 'ISO' or 'ThaiBuddhist', to the formatter. * <p> * This appends an instruction to format/parse the chronology ID to the builder. * <p> * During formatting, the chronology is obtained using a mechanism equivalent * to querying the temporal with {@link TemporalQueries#chronology()}. * It will be printed using the result of {@link Chronology#getId()}. * If the chronology cannot be obtained then an exception is thrown unless the * section of the formatter is optional. * <p> * During parsing, the chronology is parsed and must match one of the chronologies * in {@link Chronology#getAvailableChronologies()}. * If the chronology cannot be parsed then an exception is thrown unless the * section of the formatter is optional. * The parser uses the {@linkplain #parseCaseInsensitive() case sensitive} setting. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendChronologyId() { appendInternal(new ChronoPrinterParser(null)); return this; } /** * Appends the chronology name to the formatter. * <p> * The calendar system name will be output during a format. * If the chronology cannot be obtained then an exception will be thrown. * * @param textStyle the text style to use, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendChronologyText(TextStyle textStyle) { Objects.requireNonNull(textStyle, "textStyle"); appendInternal(new ChronoPrinterParser(textStyle)); return this; } //----------------------------------------------------------------------- /** * Appends a localized date-time pattern to the formatter. * <p> * This appends a localized section to the builder, suitable for outputting * a date, time or date-time combination. The format of the localized * section is lazily looked up based on four items: * <ul> * <li>the {@code dateStyle} specified to this method * <li>the {@code timeStyle} specified to this method * <li>the {@code Locale} of the {@code DateTimeFormatter} * <li>the {@code Chronology}, selecting the best available * </ul> * During formatting, the chronology is obtained from the temporal object * being formatted, which may have been overridden by * {@link DateTimeFormatter#withChronology(Chronology)}. * The {@code FULL} and {@code LONG} styles typically require a time-zone. * When formatting using these styles, a {@code ZoneId} must be available, * either by using {@code ZonedDateTime} or {@link DateTimeFormatter#withZone}. * <p> * During parsing, if a chronology has already been parsed, then it is used. * Otherwise the default from {@code DateTimeFormatter.withChronology(Chronology)} * is used, with {@code IsoChronology} as the fallback. * <p> * Note that this method provides similar functionality to methods on * {@code DateFormat} such as {@link java.text.DateFormat#getDateTimeInstance(int, int)}. * * @param dateStyle the date style to use, null means no date required * @param timeStyle the time style to use, null means no time required * @return this, for chaining, not null * @throws IllegalArgumentException if both the date and time styles are null */ public DateTimeFormatterBuilder appendLocalized(FormatStyle dateStyle, FormatStyle timeStyle) { if (dateStyle == null && timeStyle == null) { throw new IllegalArgumentException("Either the date or time style must be non-null"); } appendInternal(new LocalizedPrinterParser(dateStyle, timeStyle)); return this; } //----------------------------------------------------------------------- /** * Appends a character literal to the formatter. * <p> * This character will be output during a format. * * @param literal the literal to append, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendLiteral(char literal) { appendInternal(new CharLiteralPrinterParser(literal)); return this; } /** * Appends a string literal to the formatter. * <p> * This string will be output during a format. * <p> * If the literal is empty, nothing is added to the formatter. * * @param literal the literal to append, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendLiteral(String literal) { Objects.requireNonNull(literal, "literal"); if (!literal.isEmpty()) { if (literal.length() == 1) { appendInternal(new CharLiteralPrinterParser(literal.charAt(0))); } else { appendInternal(new StringLiteralPrinterParser(literal)); } } return this; } //----------------------------------------------------------------------- /** * Appends all the elements of a formatter to the builder. * <p> * This method has the same effect as appending each of the constituent * parts of the formatter directly to this builder. * * @param formatter the formatter to add, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder append(DateTimeFormatter formatter) { Objects.requireNonNull(formatter, "formatter"); appendInternal(formatter.toPrinterParser(false)); return this; } /** * Appends a formatter to the builder which will optionally format/parse. * <p> * This method has the same effect as appending each of the constituent * parts directly to this builder surrounded by an {@link #optionalStart()} and * {@link #optionalEnd()}. * <p> * The formatter will format if data is available for all the fields contained within it. * The formatter will parse if the string matches, otherwise no error is returned. * * @param formatter the formatter to add, not null * @return this, for chaining, not null */ public DateTimeFormatterBuilder appendOptional(DateTimeFormatter formatter) { Objects.requireNonNull(formatter, "formatter"); appendInternal(formatter.toPrinterParser(true)); return this; } //----------------------------------------------------------------------- /** * Appends the elements defined by the specified pattern to the builder. * <p> * All letters 'A' to 'Z' and 'a' to 'z' are reserved as pattern letters. * The characters '#', '{' and '}' are reserved for future use. * The characters '[' and ']' indicate optional patterns. * The following pattern letters are defined: * <pre> * Symbol Meaning Presentation Examples * ------ ------- ------------ ------- * G era text AD; Anno Domini; A * u year year 2004; 04 * y year-of-era year 2004; 04 * D day-of-year number 189 * M/L month-of-year number/text 7; 07; Jul; July; J * d day-of-month number 10 * g modified-julian-day number 2451334 * * Q/q quarter-of-year number/text 3; 03; Q3; 3rd quarter * Y week-based-year year 1996; 96 * w week-of-week-based-year number 27 * W week-of-month number 4 * E day-of-week text Tue; Tuesday; T * e/c localized day-of-week number/text 2; 02; Tue; Tuesday; T * F day-of-week-in-month number 3 * * a am-pm-of-day text PM * h clock-hour-of-am-pm (1-12) number 12 * K hour-of-am-pm (0-11) number 0 * k clock-hour-of-day (1-24) number 24 * * H hour-of-day (0-23) number 0 * m minute-of-hour number 30 * s second-of-minute number 55 * S fraction-of-second fraction 978 * A milli-of-day number 1234 * n nano-of-second number 987654321 * N nano-of-day number 1234000000 * * V time-zone ID zone-id America/Los_Angeles; Z; -08:30 * v generic time-zone name zone-name PT, Pacific Time * z time-zone name zone-name Pacific Standard Time; PST * O localized zone-offset offset-O GMT+8; GMT+08:00; UTC-08:00; * X zone-offset 'Z' for zero offset-X Z; -08; -0830; -08:30; -083015; -08:30:15 * x zone-offset offset-x +0000; -08; -0830; -08:30; -083015; -08:30:15 * Z zone-offset offset-Z +0000; -0800; -08:00 * * p pad next pad modifier 1 * * ' escape for text delimiter * '' single quote literal ' * [ optional section start * ] optional section end * # reserved for future use * { reserved for future use * } reserved for future use * </pre> * <p> * The count of pattern letters determine the format. * See <a href="DateTimeFormatter.html#patterns">DateTimeFormatter</a> for a user-focused description of the patterns. * The following tables define how the pattern letters map to the builder. * <p> * <b>Date fields</b>: Pattern letters to output a date. * <pre> * Pattern Count Equivalent builder methods * ------- ----- -------------------------- * G 1 appendText(ChronoField.ERA, TextStyle.SHORT) * GG 2 appendText(ChronoField.ERA, TextStyle.SHORT) * GGG 3 appendText(ChronoField.ERA, TextStyle.SHORT) * GGGG 4 appendText(ChronoField.ERA, TextStyle.FULL) * GGGGG 5 appendText(ChronoField.ERA, TextStyle.NARROW) * * u 1 appendValue(ChronoField.YEAR, 1, 19, SignStyle.NORMAL) * uu 2 appendValueReduced(ChronoField.YEAR, 2, 2000) * uuu 3 appendValue(ChronoField.YEAR, 3, 19, SignStyle.NORMAL) * u..u 4..n appendValue(ChronoField.YEAR, n, 19, SignStyle.EXCEEDS_PAD) * y 1 appendValue(ChronoField.YEAR_OF_ERA, 1, 19, SignStyle.NORMAL) * yy 2 appendValueReduced(ChronoField.YEAR_OF_ERA, 2, 2000) * yyy 3 appendValue(ChronoField.YEAR_OF_ERA, 3, 19, SignStyle.NORMAL) * y..y 4..n appendValue(ChronoField.YEAR_OF_ERA, n, 19, SignStyle.EXCEEDS_PAD) * Y 1 append special localized WeekFields element for numeric week-based-year * YY 2 append special localized WeekFields element for reduced numeric week-based-year 2 digits * YYY 3 append special localized WeekFields element for numeric week-based-year (3, 19, SignStyle.NORMAL) * Y..Y 4..n append special localized WeekFields element for numeric week-based-year (n, 19, SignStyle.EXCEEDS_PAD) * * Q 1 appendValue(IsoFields.QUARTER_OF_YEAR) * QQ 2 appendValue(IsoFields.QUARTER_OF_YEAR, 2) * QQQ 3 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.SHORT) * QQQQ 4 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.FULL) * QQQQQ 5 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.NARROW) * q 1 appendValue(IsoFields.QUARTER_OF_YEAR) * qq 2 appendValue(IsoFields.QUARTER_OF_YEAR, 2) * qqq 3 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.SHORT_STANDALONE) * qqqq 4 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.FULL_STANDALONE) * qqqqq 5 appendText(IsoFields.QUARTER_OF_YEAR, TextStyle.NARROW_STANDALONE) * * M 1 appendValue(ChronoField.MONTH_OF_YEAR) * MM 2 appendValue(ChronoField.MONTH_OF_YEAR, 2) * MMM 3 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.SHORT) * MMMM 4 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.FULL) * MMMMM 5 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.NARROW) * L 1 appendValue(ChronoField.MONTH_OF_YEAR) * LL 2 appendValue(ChronoField.MONTH_OF_YEAR, 2) * LLL 3 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.SHORT_STANDALONE) * LLLL 4 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.FULL_STANDALONE) * LLLLL 5 appendText(ChronoField.MONTH_OF_YEAR, TextStyle.NARROW_STANDALONE) * * w 1 append special localized WeekFields element for numeric week-of-year * ww 2 append special localized WeekFields element for numeric week-of-year, zero-padded * W 1 append special localized WeekFields element for numeric week-of-month * d 1 appendValue(ChronoField.DAY_OF_MONTH) * dd 2 appendValue(ChronoField.DAY_OF_MONTH, 2) * D 1 appendValue(ChronoField.DAY_OF_YEAR) * DD 2 appendValue(ChronoField.DAY_OF_YEAR, 2, 3, SignStyle.NOT_NEGATIVE) * DDD 3 appendValue(ChronoField.DAY_OF_YEAR, 3) * F 1 appendValue(ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH) * g..g 1..n appendValue(JulianFields.MODIFIED_JULIAN_DAY, n, 19, SignStyle.NORMAL) * E 1 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) * EE 2 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) * EEE 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) * EEEE 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL) * EEEEE 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW) * e 1 append special localized WeekFields element for numeric day-of-week * ee 2 append special localized WeekFields element for numeric day-of-week, zero-padded * eee 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT) * eeee 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL) * eeeee 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW) * c 1 append special localized WeekFields element for numeric day-of-week * ccc 3 appendText(ChronoField.DAY_OF_WEEK, TextStyle.SHORT_STANDALONE) * cccc 4 appendText(ChronoField.DAY_OF_WEEK, TextStyle.FULL_STANDALONE) * ccccc 5 appendText(ChronoField.DAY_OF_WEEK, TextStyle.NARROW_STANDALONE) * </pre> * <p> * <b>Time fields</b>: Pattern letters to output a time. * <pre> * Pattern Count Equivalent builder methods * ------- ----- -------------------------- * a 1 appendText(ChronoField.AMPM_OF_DAY, TextStyle.SHORT) * h 1 appendValue(ChronoField.CLOCK_HOUR_OF_AMPM) * hh 2 appendValue(ChronoField.CLOCK_HOUR_OF_AMPM, 2) * H 1 appendValue(ChronoField.HOUR_OF_DAY) * HH 2 appendValue(ChronoField.HOUR_OF_DAY, 2) * k 1 appendValue(ChronoField.CLOCK_HOUR_OF_DAY) * kk 2 appendValue(ChronoField.CLOCK_HOUR_OF_DAY, 2) * K 1 appendValue(ChronoField.HOUR_OF_AMPM) * KK 2 appendValue(ChronoField.HOUR_OF_AMPM, 2) * m 1 appendValue(ChronoField.MINUTE_OF_HOUR) * mm 2 appendValue(ChronoField.MINUTE_OF_HOUR, 2) * s 1 appendValue(ChronoField.SECOND_OF_MINUTE) * ss 2 appendValue(ChronoField.SECOND_OF_MINUTE, 2) * * S..S 1..n appendFraction(ChronoField.NANO_OF_SECOND, n, n, false) * A..A 1..n appendValue(ChronoField.MILLI_OF_DAY, n, 19, SignStyle.NOT_NEGATIVE) * n..n 1..n appendValue(ChronoField.NANO_OF_SECOND, n, 19, SignStyle.NOT_NEGATIVE) * N..N 1..n appendValue(ChronoField.NANO_OF_DAY, n, 19, SignStyle.NOT_NEGATIVE) * </pre> * <p> * <b>Zone ID</b>: Pattern letters to output {@code ZoneId}. * <pre> * Pattern Count Equivalent builder methods * ------- ----- -------------------------- * VV 2 appendZoneId() * v 1 appendGenericZoneText(TextStyle.SHORT) * vvvv 4 appendGenericZoneText(TextStyle.FULL) * z 1 appendZoneText(TextStyle.SHORT) * zz 2 appendZoneText(TextStyle.SHORT) * zzz 3 appendZoneText(TextStyle.SHORT) * zzzz 4 appendZoneText(TextStyle.FULL) * </pre> * <p> * <b>Zone offset</b>: Pattern letters to output {@code ZoneOffset}. * <pre> * Pattern Count Equivalent builder methods * ------- ----- -------------------------- * O 1 appendLocalizedOffset(TextStyle.SHORT) * OOOO 4 appendLocalizedOffset(TextStyle.FULL) * X 1 appendOffset("+HHmm","Z") * XX 2 appendOffset("+HHMM","Z") * XXX 3 appendOffset("+HH:MM","Z") * XXXX 4 appendOffset("+HHMMss","Z") * XXXXX 5 appendOffset("+HH:MM:ss","Z") * x 1 appendOffset("+HHmm","+00") * xx 2 appendOffset("+HHMM","+0000") * xxx 3 appendOffset("+HH:MM","+00:00") * xxxx 4 appendOffset("+HHMMss","+0000") * xxxxx 5 appendOffset("+HH:MM:ss","+00:00") * Z 1 appendOffset("+HHMM","+0000") * ZZ 2 appendOffset("+HHMM","+0000") * ZZZ 3 appendOffset("+HHMM","+0000") * ZZZZ 4 appendLocalizedOffset(TextStyle.FULL) * ZZZZZ 5 appendOffset("+HH:MM:ss","Z") * </pre> * <p> * <b>Modifiers</b>: Pattern letters that modify the rest of the pattern: * <pre> * Pattern Count Equivalent builder methods * ------- ----- -------------------------- * [ 1 optionalStart() * ] 1 optionalEnd() * p..p 1..n padNext(n) * </pre> * <p> * Any sequence of letters not specified above, unrecognized letter or * reserved character will throw an exception. * Future versions may add to the set of patterns. * It is recommended to use single quotes around all characters that you want * to output directly to ensure that future changes do not break your application. * <p> * Note that the pattern string is similar, but not identical, to * {@link java.text.SimpleDateFormat SimpleDateFormat}. * The pattern string is also similar, but not identical, to that defined by the * Unicode Common Locale Data Repository (CLDR/LDML). * Pattern letters 'X' and 'u' are aligned with Unicode CLDR/LDML. * By contrast, {@code SimpleDateFormat} uses 'u' for the numeric day of week. * Pattern letters 'y' and 'Y' parse years of two digits and more than 4 digits differently. * Pattern letters 'n', 'A', 'N', and 'p' are added. * Number types will reject large numbers. * * @param pattern the pattern to add, not null * @return this, for chaining, not null * @throws IllegalArgumentException if the pattern is invalid */ public DateTimeFormatterBuilder appendPattern(String pattern) { Objects.requireNonNull(pattern, "pattern"); parsePattern(pattern); return this; } private void parsePattern(String pattern) { for (int pos = 0; pos < pattern.length(); pos++) { char cur = pattern.charAt(pos); if ((cur >= 'A' && cur <= 'Z') || (cur >= 'a' && cur <= 'z')) { int start = pos++; for (; pos < pattern.length() && pattern.charAt(pos) == cur; pos++) ; // short loop int count = pos - start; // padding if (cur == 'p') { int pad = 0; if (pos < pattern.length()) { cur = pattern.charAt(pos); if ((cur >= 'A' && cur <= 'Z') || (cur >= 'a' && cur <= 'z')) { pad = count; start = pos++; for (; pos < pattern.length() && pattern.charAt(pos) == cur; pos++) ; // short loop count = pos - start; } } if (pad == 0) { throw new IllegalArgumentException( "Pad letter 'p' must be followed by valid pad pattern: " + pattern); } padNext(pad); // pad and continue parsing } // main rules TemporalField field = FIELD_MAP.get(cur); if (field != null) { parseField(cur, count, field); } else if (cur == 'z') { if (count > 4) { throw new IllegalArgumentException("Too many pattern letters: " + cur); } else if (count == 4) { appendZoneText(TextStyle.FULL); } else { appendZoneText(TextStyle.SHORT); } } else if (cur == 'V') { if (count != 2) { throw new IllegalArgumentException("Pattern letter count must be 2: " + cur); } appendZoneId(); } else if (cur == 'v') { if (count == 1) { appendGenericZoneText(TextStyle.SHORT); } else if (count == 4) { appendGenericZoneText(TextStyle.FULL); } else { throw new IllegalArgumentException("Wrong number of pattern letters: " + cur); } } else if (cur == 'Z') { if (count < 4) { appendOffset("+HHMM", "+0000"); } else if (count == 4) { appendLocalizedOffset(TextStyle.FULL); } else if (count == 5) { appendOffset("+HH:MM:ss", "Z"); } else { throw new IllegalArgumentException("Too many pattern letters: " + cur); } } else if (cur == 'O') { if (count == 1) { appendLocalizedOffset(TextStyle.SHORT); } else if (count == 4) { appendLocalizedOffset(TextStyle.FULL); } else { throw new IllegalArgumentException("Pattern letter count must be 1 or 4: " + cur); } } else if (cur == 'X') { if (count > 5) { throw new IllegalArgumentException("Too many pattern letters: " + cur); } appendOffset(OffsetIdPrinterParser.PATTERNS[count + (count == 1 ? 0 : 1)], "Z"); } else if (cur == 'x') { if (count > 5) { throw new IllegalArgumentException("Too many pattern letters: " + cur); } String zero = (count == 1 ? "+00" : (count % 2 == 0 ? "+0000" : "+00:00")); appendOffset(OffsetIdPrinterParser.PATTERNS[count + (count == 1 ? 0 : 1)], zero); } else if (cur == 'W') { // Fields defined by Locale if (count > 1) { throw new IllegalArgumentException("Too many pattern letters: " + cur); } appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); } else if (cur == 'w') { // Fields defined by Locale if (count > 2) { throw new IllegalArgumentException("Too many pattern letters: " + cur); } appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 2)); } else if (cur == 'Y') { // Fields defined by Locale if (count == 2) { appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 2)); } else { appendValue(new WeekBasedFieldPrinterParser(cur, count, count, 19)); } } else { throw new IllegalArgumentException("Unknown pattern letter: " + cur); } pos--; } else if (cur == '\'') { // parse literals int start = pos++; for (; pos < pattern.length(); pos++) { if (pattern.charAt(pos) == '\'') { if (pos + 1 < pattern.length() && pattern.charAt(pos + 1) == '\'') { pos++; } else { break; // end of literal } } } if (pos >= pattern.length()) { throw new IllegalArgumentException( "Pattern ends with an incomplete string literal: " + pattern); } String str = pattern.substring(start + 1, pos); if (str.isEmpty()) { appendLiteral('\''); } else { appendLiteral(str.replace("''", "'")); } } else if (cur == '[') { optionalStart(); } else if (cur == ']') { if (active.parent == null) { throw new IllegalArgumentException("Pattern invalid as it contains ] without previous ["); } optionalEnd(); } else if (cur == '{' || cur == '}' || cur == '#') { throw new IllegalArgumentException("Pattern includes reserved character: '" + cur + "'"); } else { appendLiteral(cur); } } } @SuppressWarnings("fallthrough") private void parseField(char cur, int count, TemporalField field) { boolean standalone = false; switch (cur) { case 'u': case 'y': if (count == 2) { appendValueReduced(field, 2, 2, ReducedPrinterParser.BASE_DATE); } else if (count < 4) { appendValue(field, count, 19, SignStyle.NORMAL); } else { appendValue(field, count, 19, SignStyle.EXCEEDS_PAD); } break; case 'c': if (count == 1) { appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); break; } else if (count == 2) { throw new IllegalArgumentException("Invalid pattern \"cc\""); } /*fallthrough*/ case 'L': case 'q': standalone = true; /*fallthrough*/ case 'M': case 'Q': case 'E': case 'e': switch (count) { case 1: case 2: if (cur == 'e') { appendValue(new WeekBasedFieldPrinterParser(cur, count, count, count)); } else if (cur == 'E') { appendText(field, TextStyle.SHORT); } else { if (count == 1) { appendValue(field); } else { appendValue(field, 2); } } break; case 3: appendText(field, standalone ? TextStyle.SHORT_STANDALONE : TextStyle.SHORT); break; case 4: appendText(field, standalone ? TextStyle.FULL_STANDALONE : TextStyle.FULL); break; case 5: appendText(field, standalone ? TextStyle.NARROW_STANDALONE : TextStyle.NARROW); break; default: throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'a': if (count == 1) { appendText(field, TextStyle.SHORT); } else { throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'G': switch (count) { case 1: case 2: case 3: appendText(field, TextStyle.SHORT); break; case 4: appendText(field, TextStyle.FULL); break; case 5: appendText(field, TextStyle.NARROW); break; default: throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'S': appendFraction(NANO_OF_SECOND, count, count, false); break; case 'F': if (count == 1) { appendValue(field); } else { throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'd': case 'h': case 'H': case 'k': case 'K': case 'm': case 's': if (count == 1) { appendValue(field); } else if (count == 2) { appendValue(field, count); } else { throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'D': if (count == 1) { appendValue(field); } else if (count == 2 || count == 3) { appendValue(field, count, 3, SignStyle.NOT_NEGATIVE); } else { throw new IllegalArgumentException("Too many pattern letters: " + cur); } break; case 'g': appendValue(field, count, 19, SignStyle.NORMAL); break; case 'A': case 'n': case 'N': appendValue(field, count, 19, SignStyle.NOT_NEGATIVE); break; default: if (count == 1) { appendValue(field); } else { appendValue(field, count); } break; } } /** Map of letters to fields. */ private static final Map<Character, TemporalField> FIELD_MAP = new HashMap<>(); static { // SDF = SimpleDateFormat FIELD_MAP.put('G', ChronoField.ERA); // SDF, LDML (different to both for 1/2 chars) FIELD_MAP.put('y', ChronoField.YEAR_OF_ERA); // SDF, LDML FIELD_MAP.put('u', ChronoField.YEAR); // LDML (different in SDF) FIELD_MAP.put('Q', IsoFields.QUARTER_OF_YEAR); // LDML (removed quarter from 310) FIELD_MAP.put('q', IsoFields.QUARTER_OF_YEAR); // LDML (stand-alone) FIELD_MAP.put('M', ChronoField.MONTH_OF_YEAR); // SDF, LDML FIELD_MAP.put('L', ChronoField.MONTH_OF_YEAR); // SDF, LDML (stand-alone) FIELD_MAP.put('D', ChronoField.DAY_OF_YEAR); // SDF, LDML FIELD_MAP.put('d', ChronoField.DAY_OF_MONTH); // SDF, LDML FIELD_MAP.put('F', ChronoField.ALIGNED_DAY_OF_WEEK_IN_MONTH); // SDF, LDML FIELD_MAP.put('E', ChronoField.DAY_OF_WEEK); // SDF, LDML (different to both for 1/2 chars) FIELD_MAP.put('c', ChronoField.DAY_OF_WEEK); // LDML (stand-alone) FIELD_MAP.put('e', ChronoField.DAY_OF_WEEK); // LDML (needs localized week number) FIELD_MAP.put('a', ChronoField.AMPM_OF_DAY); // SDF, LDML FIELD_MAP.put('H', ChronoField.HOUR_OF_DAY); // SDF, LDML FIELD_MAP.put('k', ChronoField.CLOCK_HOUR_OF_DAY); // SDF, LDML FIELD_MAP.put('K', ChronoField.HOUR_OF_AMPM); // SDF, LDML FIELD_MAP.put('h', ChronoField.CLOCK_HOUR_OF_AMPM); // SDF, LDML FIELD_MAP.put('m', ChronoField.MINUTE_OF_HOUR); // SDF, LDML FIELD_MAP.put('s', ChronoField.SECOND_OF_MINUTE); // SDF, LDML FIELD_MAP.put('S', ChronoField.NANO_OF_SECOND); // LDML (SDF uses milli-of-second number) FIELD_MAP.put('A', ChronoField.MILLI_OF_DAY); // LDML FIELD_MAP.put('n', ChronoField.NANO_OF_SECOND); // 310 (proposed for LDML) FIELD_MAP.put('N', ChronoField.NANO_OF_DAY); // 310 (proposed for LDML) FIELD_MAP.put('g', JulianFields.MODIFIED_JULIAN_DAY); // 310 - z - time-zone names, matches LDML and SimpleDateFormat 1 to 4 // 310 - Z - matches SimpleDateFormat and LDML // 310 - V - time-zone id, matches LDML // 310 - v - general timezone names, not matching exactly with LDML because LDML specify to fall back // to 'VVVV' if general-nonlocation unavailable but here it's not falling back because of lack of data // 310 - p - prefix for padding // 310 - X - matches LDML, almost matches SDF for 1, exact match 2&3, extended 4&5 // 310 - x - matches LDML // 310 - w, W, and Y are localized forms matching LDML // LDML - U - cycle year name, not supported by 310 yet // LDML - l - deprecated // LDML - j - not relevant } //----------------------------------------------------------------------- /** * Causes the next added printer/parser to pad to a fixed width using a space. * <p> * This padding will pad to a fixed width using spaces. * <p> * During formatting, the decorated element will be output and then padded * to the specified width. An exception will be thrown during formatting if * the pad width is exceeded. * <p> * During parsing, the padding and decorated element are parsed. * If parsing is lenient, then the pad width is treated as a maximum. * The padding is parsed greedily. Thus, if the decorated element starts with * the pad character, it will not be parsed. * * @param padWidth the pad width, 1 or greater * @return this, for chaining, not null * @throws IllegalArgumentException if pad width is too small */ public DateTimeFormatterBuilder padNext(int padWidth) { return padNext(padWidth, ' '); } /** * Causes the next added printer/parser to pad to a fixed width. * <p> * This padding is intended for padding other than zero-padding. * Zero-padding should be achieved using the appendValue methods. * <p> * During formatting, the decorated element will be output and then padded * to the specified width. An exception will be thrown during formatting if * the pad width is exceeded. * <p> * During parsing, the padding and decorated element are parsed. * If parsing is lenient, then the pad width is treated as a maximum. * If parsing is case insensitive, then the pad character is matched ignoring case. * The padding is parsed greedily. Thus, if the decorated element starts with * the pad character, it will not be parsed. * * @param padWidth the pad width, 1 or greater * @param padChar the pad character * @return this, for chaining, not null * @throws IllegalArgumentException if pad width is too small */ public DateTimeFormatterBuilder padNext(int padWidth, char padChar) { if (padWidth < 1) { throw new IllegalArgumentException("The pad width must be at least one but was " + padWidth); } active.padNextWidth = padWidth; active.padNextChar = padChar; active.valueParserIndex = -1; return this; } //----------------------------------------------------------------------- /** * Mark the start of an optional section. * <p> * The output of formatting can include optional sections, which may be nested. * An optional section is started by calling this method and ended by calling * {@link #optionalEnd()} or by ending the build process. * <p> * All elements in the optional section are treated as optional. * During formatting, the section is only output if data is available in the * {@code TemporalAccessor} for all the elements in the section. * During parsing, the whole section may be missing from the parsed string. * <p> * For example, consider a builder setup as * {@code builder.appendValue(HOUR_OF_DAY,2).optionalStart().appendValue(MINUTE_OF_HOUR,2)}. * The optional section ends automatically at the end of the builder. * During formatting, the minute will only be output if its value can be obtained from the date-time. * During parsing, the input will be successfully parsed whether the minute is present or not. * * @return this, for chaining, not null */ public DateTimeFormatterBuilder optionalStart() { active.valueParserIndex = -1; active = new DateTimeFormatterBuilder(active, true); return this; } /** * Ends an optional section. * <p> * The output of formatting can include optional sections, which may be nested. * An optional section is started by calling {@link #optionalStart()} and ended * using this method (or at the end of the builder). * <p> * Calling this method without having previously called {@code optionalStart} * will throw an exception. * Calling this method immediately after calling {@code optionalStart} has no effect * on the formatter other than ending the (empty) optional section. * <p> * All elements in the optional section are treated as optional. * During formatting, the section is only output if data is available in the * {@code TemporalAccessor} for all the elements in the section. * During parsing, the whole section may be missing from the parsed string. * <p> * For example, consider a builder setup as * {@code builder.appendValue(HOUR_OF_DAY,2).optionalStart().appendValue(MINUTE_OF_HOUR,2).optionalEnd()}. * During formatting, the minute will only be output if its value can be obtained from the date-time. * During parsing, the input will be successfully parsed whether the minute is present or not. * * @return this, for chaining, not null * @throws IllegalStateException if there was no previous call to {@code optionalStart} */ public DateTimeFormatterBuilder optionalEnd() { if (active.parent == null) { throw new IllegalStateException( "Cannot call optionalEnd() as there was no previous call to optionalStart()"); } if (active.printerParsers.size() > 0) { CompositePrinterParser cpp = new CompositePrinterParser(active.printerParsers, active.optional); active = active.parent; appendInternal(cpp); } else { active = active.parent; } return this; } //----------------------------------------------------------------------- /** * Appends a printer and/or parser to the internal list handling padding. * * @param pp the printer-parser to add, not null * @return the index into the active parsers list */ private int appendInternal(DateTimePrinterParser pp) { Objects.requireNonNull(pp, "pp"); if (active.padNextWidth > 0) { if (pp != null) { pp = new PadPrinterParserDecorator(pp, active.padNextWidth, active.padNextChar); } active.padNextWidth = 0; active.padNextChar = 0; } active.printerParsers.add(pp); active.valueParserIndex = -1; return active.printerParsers.size() - 1; } //----------------------------------------------------------------------- /** * Completes this builder by creating the {@code DateTimeFormatter} * using the default locale. * <p> * This will create a formatter with the {@linkplain Locale#getDefault(Locale.Category) default FORMAT locale}. * Numbers will be printed and parsed using the standard DecimalStyle. * The resolver style will be {@link ResolverStyle#SMART SMART}. * <p> * Calling this method will end any open optional sections by repeatedly * calling {@link #optionalEnd()} before creating the formatter. * <p> * This builder can still be used after creating the formatter if desired, * although the state may have been changed by calls to {@code optionalEnd}. * * @return the created formatter, not null */ public DateTimeFormatter toFormatter() { return toFormatter(Locale.getDefault(Locale.Category.FORMAT)); } /** * Completes this builder by creating the {@code DateTimeFormatter} * using the specified locale. * <p> * This will create a formatter with the specified locale. * Numbers will be printed and parsed using the standard DecimalStyle. * The resolver style will be {@link ResolverStyle#SMART SMART}. * <p> * Calling this method will end any open optional sections by repeatedly * calling {@link #optionalEnd()} before creating the formatter. * <p> * This builder can still be used after creating the formatter if desired, * although the state may have been changed by calls to {@code optionalEnd}. * * @param locale the locale to use for formatting, not null * @return the created formatter, not null */ public DateTimeFormatter toFormatter(Locale locale) { return toFormatter(locale, ResolverStyle.SMART, null); } /** * Completes this builder by creating the formatter. * This uses the default locale. * * @param resolverStyle the resolver style to use, not null * @return the created formatter, not null */ DateTimeFormatter toFormatter(ResolverStyle resolverStyle, Chronology chrono) { return toFormatter(Locale.getDefault(Locale.Category.FORMAT), resolverStyle, chrono); } /** * Completes this builder by creating the formatter. * * @param locale the locale to use for formatting, not null * @param chrono the chronology to use, may be null * @return the created formatter, not null */ private DateTimeFormatter toFormatter(Locale locale, ResolverStyle resolverStyle, Chronology chrono) { Objects.requireNonNull(locale, "locale"); while (active.parent != null) { optionalEnd(); } CompositePrinterParser pp = new CompositePrinterParser(printerParsers, false); return new DateTimeFormatter(pp, locale, DecimalStyle.STANDARD, resolverStyle, null, chrono, null); } //----------------------------------------------------------------------- /** * Strategy for formatting/parsing date-time information. * <p> * The printer may format any part, or the whole, of the input date-time object. * Typically, a complete format is constructed from a number of smaller * units, each outputting a single field. * <p> * The parser may parse any piece of text from the input, storing the result * in the context. Typically, each individual parser will just parse one * field, such as the day-of-month, storing the value in the context. * Once the parse is complete, the caller will then resolve the parsed values * to create the desired object, such as a {@code LocalDate}. * <p> * The parse position will be updated during the parse. Parsing will start at * the specified index and the return value specifies the new parse position * for the next parser. If an error occurs, the returned index will be negative * and will have the error position encoded using the complement operator. * * @implSpec * This interface must be implemented with care to ensure other classes operate correctly. * All implementations that can be instantiated must be final, immutable and thread-safe. * <p> * The context is not a thread-safe object and a new instance will be created * for each format that occurs. The context must not be stored in an instance * variable or shared with any other threads. */ interface DateTimePrinterParser { /** * Prints the date-time object to the buffer. * <p> * The context holds information to use during the format. * It also contains the date-time information to be printed. * <p> * The buffer must not be mutated beyond the content controlled by the implementation. * * @param context the context to format using, not null * @param buf the buffer to append to, not null * @return false if unable to query the value from the date-time, true otherwise * @throws DateTimeException if the date-time cannot be printed successfully */ boolean format(DateTimePrintContext context, StringBuilder buf); /** * Parses text into date-time information. * <p> * The context holds information to use during the parse. * It is also used to store the parsed date-time information. * * @param context the context to use and parse into, not null * @param text the input text to parse, not null * @param position the position to start parsing at, from 0 to the text length * @return the new parse position, where negative means an error with the * error position encoded using the complement ~ operator * @throws NullPointerException if the context or text is null * @throws IndexOutOfBoundsException if the position is invalid */ int parse(DateTimeParseContext context, CharSequence text, int position); } //----------------------------------------------------------------------- /** * Composite printer and parser. */ static final class CompositePrinterParser implements DateTimePrinterParser { private final DateTimePrinterParser[] printerParsers; private final boolean optional; CompositePrinterParser(List<DateTimePrinterParser> printerParsers, boolean optional) { this(printerParsers.toArray(new DateTimePrinterParser[printerParsers.size()]), optional); } CompositePrinterParser(DateTimePrinterParser[] printerParsers, boolean optional) { this.printerParsers = printerParsers; this.optional = optional; } /** * Returns a copy of this printer-parser with the optional flag changed. * * @param optional the optional flag to set in the copy * @return the new printer-parser, not null */ public CompositePrinterParser withOptional(boolean optional) { if (optional == this.optional) { return this; } return new CompositePrinterParser(printerParsers, optional); } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { int length = buf.length(); if (optional) { context.startOptional(); } try { for (DateTimePrinterParser pp : printerParsers) { if (pp.format(context, buf) == false) { buf.setLength(length); // reset buffer return true; } } } finally { if (optional) { context.endOptional(); } } return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { if (optional) { context.startOptional(); int pos = position; for (DateTimePrinterParser pp : printerParsers) { pos = pp.parse(context, text, pos); if (pos < 0) { context.endOptional(false); return position; // return original position } } context.endOptional(true); return pos; } else { for (DateTimePrinterParser pp : printerParsers) { position = pp.parse(context, text, position); if (position < 0) { break; } } return position; } } @Override public String toString() { StringBuilder buf = new StringBuilder(); if (printerParsers != null) { buf.append(optional ? "[" : "("); for (DateTimePrinterParser pp : printerParsers) { buf.append(pp); } buf.append(optional ? "]" : ")"); } return buf.toString(); } } //----------------------------------------------------------------------- /** * Pads the output to a fixed width. */ static final class PadPrinterParserDecorator implements DateTimePrinterParser { private final DateTimePrinterParser printerParser; private final int padWidth; private final char padChar; /** * Constructor. * * @param printerParser the printer, not null * @param padWidth the width to pad to, 1 or greater * @param padChar the pad character */ PadPrinterParserDecorator(DateTimePrinterParser printerParser, int padWidth, char padChar) { // input checked by DateTimeFormatterBuilder this.printerParser = printerParser; this.padWidth = padWidth; this.padChar = padChar; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { int preLen = buf.length(); if (printerParser.format(context, buf) == false) { return false; } int len = buf.length() - preLen; if (len > padWidth) { throw new DateTimeException( "Cannot print as output of " + len + " characters exceeds pad width of " + padWidth); } for (int i = 0; i < padWidth - len; i++) { buf.insert(preLen, padChar); } return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { // cache context before changed by decorated parser final boolean strict = context.isStrict(); // parse if (position > text.length()) { throw new IndexOutOfBoundsException(); } if (position == text.length()) { return ~position; // no more characters in the string } int endPos = position + padWidth; if (endPos > text.length()) { if (strict) { return ~position; // not enough characters in the string to meet the parse width } endPos = text.length(); } int pos = position; while (pos < endPos && context.charEquals(text.charAt(pos), padChar)) { pos++; } text = text.subSequence(0, endPos); int resultPos = printerParser.parse(context, text, pos); if (resultPos != endPos && strict) { return ~(position + pos); // parse of decorated field didn't parse to the end } return resultPos; } @Override public String toString() { return "Pad(" + printerParser + "," + padWidth + (padChar == ' ' ? ")" : ",'" + padChar + "')"); } } //----------------------------------------------------------------------- /** * Enumeration to apply simple parse settings. */ static enum SettingsParser implements DateTimePrinterParser { SENSITIVE, INSENSITIVE, STRICT, LENIENT; @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { return true; // nothing to do here } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { // using ordinals to avoid javac synthetic inner class switch (ordinal()) { case 0: context.setCaseSensitive(true); break; case 1: context.setCaseSensitive(false); break; case 2: context.setStrict(true); break; case 3: context.setStrict(false); break; } return position; } @Override public String toString() { // using ordinals to avoid javac synthetic inner class switch (ordinal()) { case 0: return "ParseCaseSensitive(true)"; case 1: return "ParseCaseSensitive(false)"; case 2: return "ParseStrict(true)"; case 3: return "ParseStrict(false)"; } throw new IllegalStateException("Unreachable"); } } //----------------------------------------------------------------------- /** * Defaults a value into the parse if not currently present. */ static class DefaultValueParser implements DateTimePrinterParser { private final TemporalField field; private final long value; DefaultValueParser(TemporalField field, long value) { this.field = field; this.value = value; } public boolean format(DateTimePrintContext context, StringBuilder buf) { return true; } public int parse(DateTimeParseContext context, CharSequence text, int position) { if (context.getParsed(field) == null) { context.setParsedField(field, value, position, position); } return position; } } //----------------------------------------------------------------------- /** * Prints or parses a character literal. */ static final class CharLiteralPrinterParser implements DateTimePrinterParser { private final char literal; CharLiteralPrinterParser(char literal) { this.literal = literal; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { buf.append(literal); return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int length = text.length(); if (position == length) { return ~position; } char ch = text.charAt(position); if (ch != literal) { if (context.isCaseSensitive() || (Character.toUpperCase(ch) != Character.toUpperCase(literal) && Character.toLowerCase(ch) != Character.toLowerCase(literal))) { return ~position; } } return position + 1; } @Override public String toString() { if (literal == '\'') { return "''"; } return "'" + literal + "'"; } } //----------------------------------------------------------------------- /** * Prints or parses a string literal. */ static final class StringLiteralPrinterParser implements DateTimePrinterParser { private final String literal; StringLiteralPrinterParser(String literal) { this.literal = literal; // validated by caller } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { buf.append(literal); return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int length = text.length(); if (position > length || position < 0) { throw new IndexOutOfBoundsException(); } if (context.subSequenceEquals(text, position, literal, 0, literal.length()) == false) { return ~position; } return position + literal.length(); } @Override public String toString() { String converted = literal.replace("'", "''"); return "'" + converted + "'"; } } //----------------------------------------------------------------------- /** * Prints and parses a numeric date-time field with optional padding. */ static class NumberPrinterParser implements DateTimePrinterParser { /** * Array of 10 to the power of n. */ static final long[] EXCEED_POINTS = new long[] { 0L, 10L, 100L, 1000L, 10000L, 100000L, 1000000L, 10000000L, 100000000L, 1000000000L, 10000000000L, }; final TemporalField field; final int minWidth; final int maxWidth; private final SignStyle signStyle; final int subsequentWidth; /** * Constructor. * * @param field the field to format, not null * @param minWidth the minimum field width, from 1 to 19 * @param maxWidth the maximum field width, from minWidth to 19 * @param signStyle the positive/negative sign style, not null */ NumberPrinterParser(TemporalField field, int minWidth, int maxWidth, SignStyle signStyle) { // validated by caller this.field = field; this.minWidth = minWidth; this.maxWidth = maxWidth; this.signStyle = signStyle; this.subsequentWidth = 0; } /** * Constructor. * * @param field the field to format, not null * @param minWidth the minimum field width, from 1 to 19 * @param maxWidth the maximum field width, from minWidth to 19 * @param signStyle the positive/negative sign style, not null * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater, * -1 if fixed width due to active adjacent parsing */ protected NumberPrinterParser(TemporalField field, int minWidth, int maxWidth, SignStyle signStyle, int subsequentWidth) { // validated by caller this.field = field; this.minWidth = minWidth; this.maxWidth = maxWidth; this.signStyle = signStyle; this.subsequentWidth = subsequentWidth; } /** * Returns a new instance with fixed width flag set. * * @return a new updated printer-parser, not null */ NumberPrinterParser withFixedWidth() { if (subsequentWidth == -1) { return this; } return new NumberPrinterParser(field, minWidth, maxWidth, signStyle, -1); } /** * Returns a new instance with an updated subsequent width. * * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater * @return a new updated printer-parser, not null */ NumberPrinterParser withSubsequentWidth(int subsequentWidth) { return new NumberPrinterParser(field, minWidth, maxWidth, signStyle, this.subsequentWidth + subsequentWidth); } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Long valueLong = context.getValue(field); if (valueLong == null) { return false; } long value = getValue(context, valueLong); DecimalStyle decimalStyle = context.getDecimalStyle(); String str = (value == Long.MIN_VALUE ? "9223372036854775808" : Long.toString(Math.abs(value))); if (str.length() > maxWidth) { throw new DateTimeException("Field " + field + " cannot be printed as the value " + value + " exceeds the maximum print width of " + maxWidth); } str = decimalStyle.convertNumberToI18N(str); if (value >= 0) { switch (signStyle) { case EXCEEDS_PAD: if (minWidth < 19 && value >= EXCEED_POINTS[minWidth]) { buf.append(decimalStyle.getPositiveSign()); } break; case ALWAYS: buf.append(decimalStyle.getPositiveSign()); break; } } else { switch (signStyle) { case NORMAL: case EXCEEDS_PAD: case ALWAYS: buf.append(decimalStyle.getNegativeSign()); break; case NOT_NEGATIVE: throw new DateTimeException("Field " + field + " cannot be printed as the value " + value + " cannot be negative according to the SignStyle"); } } for (int i = 0; i < minWidth - str.length(); i++) { buf.append(decimalStyle.getZeroDigit()); } buf.append(str); return true; } /** * Gets the value to output. * * @param context the context * @param value the value of the field, not null * @return the value */ long getValue(DateTimePrintContext context, long value) { return value; } /** * For NumberPrinterParser, the width is fixed depending on the * minWidth, maxWidth, signStyle and whether subsequent fields are fixed. * @param context the context * @return true if the field is fixed width * @see DateTimeFormatterBuilder#appendValue(java.time.temporal.TemporalField, int) */ boolean isFixedWidth(DateTimeParseContext context) { return subsequentWidth == -1 || (subsequentWidth > 0 && minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE); } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int length = text.length(); if (position == length) { return ~position; } char sign = text.charAt(position); // IOOBE if invalid position boolean negative = false; boolean positive = false; if (sign == context.getDecimalStyle().getPositiveSign()) { if (signStyle.parse(true, context.isStrict(), minWidth == maxWidth) == false) { return ~position; } positive = true; position++; } else if (sign == context.getDecimalStyle().getNegativeSign()) { if (signStyle.parse(false, context.isStrict(), minWidth == maxWidth) == false) { return ~position; } negative = true; position++; } else { if (signStyle == SignStyle.ALWAYS && context.isStrict()) { return ~position; } } int effMinWidth = (context.isStrict() || isFixedWidth(context) ? minWidth : 1); int minEndPos = position + effMinWidth; if (minEndPos > length) { return ~position; } int effMaxWidth = (context.isStrict() || isFixedWidth(context) ? maxWidth : 9) + Math.max(subsequentWidth, 0); long total = 0; BigInteger totalBig = null; int pos = position; for (int pass = 0; pass < 2; pass++) { int maxEndPos = Math.min(pos + effMaxWidth, length); while (pos < maxEndPos) { char ch = text.charAt(pos++); int digit = context.getDecimalStyle().convertToDigit(ch); if (digit < 0) { pos--; if (pos < minEndPos) { return ~position; // need at least min width digits } break; } if ((pos - position) > 18) { if (totalBig == null) { totalBig = BigInteger.valueOf(total); } totalBig = totalBig.multiply(BigInteger.TEN).add(BigInteger.valueOf(digit)); } else { total = total * 10 + digit; } } if (subsequentWidth > 0 && pass == 0) { // re-parse now we know the correct width int parseLen = pos - position; effMaxWidth = Math.max(effMinWidth, parseLen - subsequentWidth); pos = position; total = 0; totalBig = null; } else { break; } } if (negative) { if (totalBig != null) { if (totalBig.equals(BigInteger.ZERO) && context.isStrict()) { return ~(position - 1); // minus zero not allowed } totalBig = totalBig.negate(); } else { if (total == 0 && context.isStrict()) { return ~(position - 1); // minus zero not allowed } total = -total; } } else if (signStyle == SignStyle.EXCEEDS_PAD && context.isStrict()) { int parseLen = pos - position; if (positive) { if (parseLen <= minWidth) { return ~(position - 1); // '+' only parsed if minWidth exceeded } } else { if (parseLen > minWidth) { return ~position; // '+' must be parsed if minWidth exceeded } } } if (totalBig != null) { if (totalBig.bitLength() > 63) { // overflow, parse 1 less digit totalBig = totalBig.divide(BigInteger.TEN); pos--; } return setValue(context, totalBig.longValue(), position, pos); } return setValue(context, total, position, pos); } /** * Stores the value. * * @param context the context to store into, not null * @param value the value * @param errorPos the position of the field being parsed * @param successPos the position after the field being parsed * @return the new position */ int setValue(DateTimeParseContext context, long value, int errorPos, int successPos) { return context.setParsedField(field, value, errorPos, successPos); } @Override public String toString() { if (minWidth == 1 && maxWidth == 19 && signStyle == SignStyle.NORMAL) { return "Value(" + field + ")"; } if (minWidth == maxWidth && signStyle == SignStyle.NOT_NEGATIVE) { return "Value(" + field + "," + minWidth + ")"; } return "Value(" + field + "," + minWidth + "," + maxWidth + "," + signStyle + ")"; } } //----------------------------------------------------------------------- /** * Prints and parses a reduced numeric date-time field. */ static final class ReducedPrinterParser extends NumberPrinterParser { /** * The base date for reduced value parsing. */ static final LocalDate BASE_DATE = LocalDate.of(2000, 1, 1); private final int baseValue; private final ChronoLocalDate baseDate; /** * Constructor. * * @param field the field to format, validated not null * @param minWidth the minimum field width, from 1 to 10 * @param maxWidth the maximum field width, from 1 to 10 * @param baseValue the base value * @param baseDate the base date */ ReducedPrinterParser(TemporalField field, int minWidth, int maxWidth, int baseValue, ChronoLocalDate baseDate) { this(field, minWidth, maxWidth, baseValue, baseDate, 0); if (minWidth < 1 || minWidth > 10) { throw new IllegalArgumentException( "The minWidth must be from 1 to 10 inclusive but was " + minWidth); } if (maxWidth < 1 || maxWidth > 10) { throw new IllegalArgumentException( "The maxWidth must be from 1 to 10 inclusive but was " + minWidth); } if (maxWidth < minWidth) { throw new IllegalArgumentException( "Maximum width must exceed or equal the minimum width but " + maxWidth + " < " + minWidth); } if (baseDate == null) { if (field.range().isValidValue(baseValue) == false) { throw new IllegalArgumentException("The base value must be within the range of the field"); } if ((((long) baseValue) + EXCEED_POINTS[maxWidth]) > Integer.MAX_VALUE) { throw new DateTimeException( "Unable to add printer-parser as the range exceeds the capacity of an int"); } } } /** * Constructor. * The arguments have already been checked. * * @param field the field to format, validated not null * @param minWidth the minimum field width, from 1 to 10 * @param maxWidth the maximum field width, from 1 to 10 * @param baseValue the base value * @param baseDate the base date * @param subsequentWidth the subsequentWidth for this instance */ private ReducedPrinterParser(TemporalField field, int minWidth, int maxWidth, int baseValue, ChronoLocalDate baseDate, int subsequentWidth) { super(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); this.baseValue = baseValue; this.baseDate = baseDate; } @Override long getValue(DateTimePrintContext context, long value) { long absValue = Math.abs(value); int baseValue = this.baseValue; if (baseDate != null) { Chronology chrono = Chronology.from(context.getTemporal()); baseValue = chrono.date(baseDate).get(field); } if (value >= baseValue && value < baseValue + EXCEED_POINTS[minWidth]) { // Use the reduced value if it fits in minWidth return absValue % EXCEED_POINTS[minWidth]; } // Otherwise truncate to fit in maxWidth return absValue % EXCEED_POINTS[maxWidth]; } @Override int setValue(DateTimeParseContext context, long value, int errorPos, int successPos) { int baseValue = this.baseValue; if (baseDate != null) { Chronology chrono = context.getEffectiveChronology(); baseValue = chrono.date(baseDate).get(field); // In case the Chronology is changed later, add a callback when/if it changes final long initialValue = value; context.addChronoChangedListener((_unused) -> { /* Repeat the set of the field using the current Chronology * The success/error position is ignored because the value is * intentionally being overwritten. */ setValue(context, initialValue, errorPos, successPos); }); } int parseLen = successPos - errorPos; if (parseLen == minWidth && value >= 0) { long range = EXCEED_POINTS[minWidth]; long lastPart = baseValue % range; long basePart = baseValue - lastPart; if (baseValue > 0) { value = basePart + value; } else { value = basePart - value; } if (value < baseValue) { value += range; } } return context.setParsedField(field, value, errorPos, successPos); } /** * Returns a new instance with fixed width flag set. * * @return a new updated printer-parser, not null */ @Override ReducedPrinterParser withFixedWidth() { if (subsequentWidth == -1) { return this; } return new ReducedPrinterParser(field, minWidth, maxWidth, baseValue, baseDate, -1); } /** * Returns a new instance with an updated subsequent width. * * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater * @return a new updated printer-parser, not null */ @Override ReducedPrinterParser withSubsequentWidth(int subsequentWidth) { return new ReducedPrinterParser(field, minWidth, maxWidth, baseValue, baseDate, this.subsequentWidth + subsequentWidth); } /** * For a ReducedPrinterParser, fixed width is false if the mode is strict, * otherwise it is set as for NumberPrinterParser. * @param context the context * @return if the field is fixed width * @see DateTimeFormatterBuilder#appendValueReduced(java.time.temporal.TemporalField, int, int, int) */ @Override boolean isFixedWidth(DateTimeParseContext context) { if (context.isStrict() == false) { return false; } return super.isFixedWidth(context); } @Override public String toString() { return "ReducedValue(" + field + "," + minWidth + "," + maxWidth + "," + Objects.requireNonNullElse(baseDate, baseValue) + ")"; } } //----------------------------------------------------------------------- /** * Prints and parses a numeric date-time field with optional padding. */ static final class FractionPrinterParser extends NumberPrinterParser { private final boolean decimalPoint; /** * Constructor. * * @param field the field to output, not null * @param minWidth the minimum width to output, from 0 to 9 * @param maxWidth the maximum width to output, from 0 to 9 * @param decimalPoint whether to output the localized decimal point symbol */ FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint) { this(field, minWidth, maxWidth, decimalPoint, 0); Objects.requireNonNull(field, "field"); if (field.range().isFixed() == false) { throw new IllegalArgumentException("Field must have a fixed set of values: " + field); } if (minWidth < 0 || minWidth > 9) { throw new IllegalArgumentException( "Minimum width must be from 0 to 9 inclusive but was " + minWidth); } if (maxWidth < 1 || maxWidth > 9) { throw new IllegalArgumentException( "Maximum width must be from 1 to 9 inclusive but was " + maxWidth); } if (maxWidth < minWidth) { throw new IllegalArgumentException( "Maximum width must exceed or equal the minimum width but " + maxWidth + " < " + minWidth); } } /** * Constructor. * * @param field the field to output, not null * @param minWidth the minimum width to output, from 0 to 9 * @param maxWidth the maximum width to output, from 0 to 9 * @param decimalPoint whether to output the localized decimal point symbol * @param subsequentWidth the subsequentWidth for this instance */ FractionPrinterParser(TemporalField field, int minWidth, int maxWidth, boolean decimalPoint, int subsequentWidth) { super(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); this.decimalPoint = decimalPoint; } /** * Returns a new instance with fixed width flag set. * * @return a new updated printer-parser, not null */ @Override FractionPrinterParser withFixedWidth() { if (subsequentWidth == -1) { return this; } return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, -1); } /** * Returns a new instance with an updated subsequent width. * * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater * @return a new updated printer-parser, not null */ @Override FractionPrinterParser withSubsequentWidth(int subsequentWidth) { return new FractionPrinterParser(field, minWidth, maxWidth, decimalPoint, this.subsequentWidth + subsequentWidth); } /** * For FractionPrinterPrinterParser, the width is fixed if context is sttrict, * minWidth equal to maxWidth and decimalpoint is absent. * @param context the context * @return if the field is fixed width * @see DateTimeFormatterBuilder#appendValueFraction(java.time.temporal.TemporalField, int, int, boolean) */ @Override boolean isFixedWidth(DateTimeParseContext context) { if (context.isStrict() && minWidth == maxWidth && decimalPoint == false) { return true; } return false; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Long value = context.getValue(field); if (value == null) { return false; } DecimalStyle decimalStyle = context.getDecimalStyle(); BigDecimal fraction = convertToFraction(value); if (fraction.scale() == 0) { // scale is zero if value is zero if (minWidth > 0) { if (decimalPoint) { buf.append(decimalStyle.getDecimalSeparator()); } for (int i = 0; i < minWidth; i++) { buf.append(decimalStyle.getZeroDigit()); } } } else { int outputScale = Math.min(Math.max(fraction.scale(), minWidth), maxWidth); fraction = fraction.setScale(outputScale, RoundingMode.FLOOR); String str = fraction.toPlainString().substring(2); str = decimalStyle.convertNumberToI18N(str); if (decimalPoint) { buf.append(decimalStyle.getDecimalSeparator()); } buf.append(str); } return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int effectiveMin = (context.isStrict() || isFixedWidth(context) ? minWidth : 0); int effectiveMax = (context.isStrict() || isFixedWidth(context) ? maxWidth : 9); int length = text.length(); if (position == length) { // valid if whole field is optional, invalid if minimum width return (effectiveMin > 0 ? ~position : position); } if (decimalPoint) { if (text.charAt(position) != context.getDecimalStyle().getDecimalSeparator()) { // valid if whole field is optional, invalid if minimum width return (effectiveMin > 0 ? ~position : position); } position++; } int minEndPos = position + effectiveMin; if (minEndPos > length) { return ~position; // need at least min width digits } int maxEndPos = Math.min(position + effectiveMax, length); int total = 0; // can use int because we are only parsing up to 9 digits int pos = position; while (pos < maxEndPos) { char ch = text.charAt(pos++); int digit = context.getDecimalStyle().convertToDigit(ch); if (digit < 0) { if (pos < minEndPos) { return ~position; // need at least min width digits } pos--; break; } total = total * 10 + digit; } BigDecimal fraction = new BigDecimal(total).movePointLeft(pos - position); long value = convertFromFraction(fraction); return context.setParsedField(field, value, position, pos); } /** * Converts a value for this field to a fraction between 0 and 1. * <p> * The fractional value is between 0 (inclusive) and 1 (exclusive). * It can only be returned if the {@link java.time.temporal.TemporalField#range() value range} is fixed. * The fraction is obtained by calculation from the field range using 9 decimal * places and a rounding mode of {@link RoundingMode#FLOOR FLOOR}. * The calculation is inaccurate if the values do not run continuously from smallest to largest. * <p> * For example, the second-of-minute value of 15 would be returned as 0.25, * assuming the standard definition of 60 seconds in a minute. * * @param value the value to convert, must be valid for this rule * @return the value as a fraction within the range, from 0 to 1, not null * @throws DateTimeException if the value cannot be converted to a fraction */ private BigDecimal convertToFraction(long value) { ValueRange range = field.range(); range.checkValidValue(value, field); BigDecimal minBD = BigDecimal.valueOf(range.getMinimum()); BigDecimal rangeBD = BigDecimal.valueOf(range.getMaximum()).subtract(minBD).add(BigDecimal.ONE); BigDecimal valueBD = BigDecimal.valueOf(value).subtract(minBD); BigDecimal fraction = valueBD.divide(rangeBD, 9, RoundingMode.FLOOR); // stripTrailingZeros bug return fraction.compareTo(BigDecimal.ZERO) == 0 ? BigDecimal.ZERO : fraction.stripTrailingZeros(); } /** * Converts a fraction from 0 to 1 for this field to a value. * <p> * The fractional value must be between 0 (inclusive) and 1 (exclusive). * It can only be returned if the {@link java.time.temporal.TemporalField#range() value range} is fixed. * The value is obtained by calculation from the field range and a rounding * mode of {@link RoundingMode#FLOOR FLOOR}. * The calculation is inaccurate if the values do not run continuously from smallest to largest. * <p> * For example, the fractional second-of-minute of 0.25 would be converted to 15, * assuming the standard definition of 60 seconds in a minute. * * @param fraction the fraction to convert, not null * @return the value of the field, valid for this rule * @throws DateTimeException if the value cannot be converted */ private long convertFromFraction(BigDecimal fraction) { ValueRange range = field.range(); BigDecimal minBD = BigDecimal.valueOf(range.getMinimum()); BigDecimal rangeBD = BigDecimal.valueOf(range.getMaximum()).subtract(minBD).add(BigDecimal.ONE); BigDecimal valueBD = fraction.multiply(rangeBD).setScale(0, RoundingMode.FLOOR).add(minBD); return valueBD.longValueExact(); } @Override public String toString() { String decimal = (decimalPoint ? ",DecimalPoint" : ""); return "Fraction(" + field + "," + minWidth + "," + maxWidth + decimal + ")"; } } //----------------------------------------------------------------------- /** * Prints or parses field text. */ static final class TextPrinterParser implements DateTimePrinterParser { private final TemporalField field; private final TextStyle textStyle; private final DateTimeTextProvider provider; /** * The cached number printer parser. * Immutable and volatile, so no synchronization needed. */ private volatile NumberPrinterParser numberPrinterParser; /** * Constructor. * * @param field the field to output, not null * @param textStyle the text style, not null * @param provider the text provider, not null */ TextPrinterParser(TemporalField field, TextStyle textStyle, DateTimeTextProvider provider) { // validated by caller this.field = field; this.textStyle = textStyle; this.provider = provider; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Long value = context.getValue(field); if (value == null) { return false; } String text; Chronology chrono = context.getTemporal().query(TemporalQueries.chronology()); if (chrono == null || chrono == IsoChronology.INSTANCE) { text = provider.getText(field, value, textStyle, context.getLocale()); } else { text = provider.getText(chrono, field, value, textStyle, context.getLocale()); } if (text == null) { return numberPrinterParser().format(context, buf); } buf.append(text); return true; } @Override public int parse(DateTimeParseContext context, CharSequence parseText, int position) { int length = parseText.length(); if (position < 0 || position > length) { throw new IndexOutOfBoundsException(); } TextStyle style = (context.isStrict() ? textStyle : null); Chronology chrono = context.getEffectiveChronology(); Iterator<Entry<String, Long>> it; if (chrono == null || chrono == IsoChronology.INSTANCE) { it = provider.getTextIterator(field, style, context.getLocale()); } else { it = provider.getTextIterator(chrono, field, style, context.getLocale()); } if (it != null) { while (it.hasNext()) { Entry<String, Long> entry = it.next(); String itText = entry.getKey(); if (context.subSequenceEquals(itText, 0, parseText, position, itText.length())) { return context.setParsedField(field, entry.getValue(), position, position + itText.length()); } } if (field == ERA && !context.isStrict()) { // parse the possible era name from era.toString() List<Era> eras = chrono.eras(); for (Era era : eras) { String name = era.toString(); if (context.subSequenceEquals(name, 0, parseText, position, name.length())) { return context.setParsedField(field, era.getValue(), position, position + name.length()); } } } if (context.isStrict()) { return ~position; } } return numberPrinterParser().parse(context, parseText, position); } /** * Create and cache a number printer parser. * @return the number printer parser for this field, not null */ private NumberPrinterParser numberPrinterParser() { if (numberPrinterParser == null) { numberPrinterParser = new NumberPrinterParser(field, 1, 19, SignStyle.NORMAL); } return numberPrinterParser; } @Override public String toString() { if (textStyle == TextStyle.FULL) { return "Text(" + field + ")"; } return "Text(" + field + "," + textStyle + ")"; } } //----------------------------------------------------------------------- /** * Prints or parses an ISO-8601 instant. */ static final class InstantPrinterParser implements DateTimePrinterParser { // days in a 400 year cycle = 146097 // days in a 10,000 year cycle = 146097 * 25 // seconds per day = 86400 private static final long SECONDS_PER_10000_YEARS = 146097L * 25L * 86400L; private static final long SECONDS_0000_TO_1970 = ((146097L * 5L) - (30L * 365L + 7L)) * 86400L; private final int fractionalDigits; InstantPrinterParser(int fractionalDigits) { this.fractionalDigits = fractionalDigits; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { // use INSTANT_SECONDS, thus this code is not bound by Instant.MAX Long inSecs = context.getValue(INSTANT_SECONDS); Long inNanos = null; if (context.getTemporal().isSupported(NANO_OF_SECOND)) { inNanos = context.getTemporal().getLong(NANO_OF_SECOND); } if (inSecs == null) { return false; } long inSec = inSecs; int inNano = NANO_OF_SECOND.checkValidIntValue(inNanos != null ? inNanos : 0); // format mostly using LocalDateTime.toString if (inSec >= -SECONDS_0000_TO_1970) { // current era long zeroSecs = inSec - SECONDS_PER_10000_YEARS + SECONDS_0000_TO_1970; long hi = Math.floorDiv(zeroSecs, SECONDS_PER_10000_YEARS) + 1; long lo = Math.floorMod(zeroSecs, SECONDS_PER_10000_YEARS); LocalDateTime ldt = LocalDateTime.ofEpochSecond(lo - SECONDS_0000_TO_1970, 0, ZoneOffset.UTC); if (hi > 0) { buf.append('+').append(hi); } buf.append(ldt); if (ldt.getSecond() == 0) { buf.append(":00"); } } else { // before current era long zeroSecs = inSec + SECONDS_0000_TO_1970; long hi = zeroSecs / SECONDS_PER_10000_YEARS; long lo = zeroSecs % SECONDS_PER_10000_YEARS; LocalDateTime ldt = LocalDateTime.ofEpochSecond(lo - SECONDS_0000_TO_1970, 0, ZoneOffset.UTC); int pos = buf.length(); buf.append(ldt); if (ldt.getSecond() == 0) { buf.append(":00"); } if (hi < 0) { if (ldt.getYear() == -10_000) { buf.replace(pos, pos + 2, Long.toString(hi - 1)); } else if (lo == 0) { buf.insert(pos, hi); } else { buf.insert(pos + 1, Math.abs(hi)); } } } // add fraction if ((fractionalDigits < 0 && inNano > 0) || fractionalDigits > 0) { buf.append('.'); int div = 100_000_000; for (int i = 0; ((fractionalDigits == -1 && inNano > 0) || (fractionalDigits == -2 && (inNano > 0 || (i % 3) != 0)) || i < fractionalDigits); i++) { int digit = inNano / div; buf.append((char) (digit + '0')); inNano = inNano - (digit * div); div = div / 10; } } buf.append('Z'); return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { // new context to avoid overwriting fields like year/month/day int minDigits = (fractionalDigits < 0 ? 0 : fractionalDigits); int maxDigits = (fractionalDigits < 0 ? 9 : fractionalDigits); CompositePrinterParser parser = new DateTimeFormatterBuilder().append(DateTimeFormatter.ISO_LOCAL_DATE) .appendLiteral('T').appendValue(HOUR_OF_DAY, 2).appendLiteral(':') .appendValue(MINUTE_OF_HOUR, 2).appendLiteral(':').appendValue(SECOND_OF_MINUTE, 2) .appendFraction(NANO_OF_SECOND, minDigits, maxDigits, true).appendOffsetId().toFormatter() .toPrinterParser(false); DateTimeParseContext newContext = context.copy(); int pos = parser.parse(newContext, text, position); if (pos < 0) { return pos; } // parser restricts most fields to 2 digits, so definitely int // correctly parsed nano is also guaranteed to be valid long yearParsed = newContext.getParsed(YEAR); int month = newContext.getParsed(MONTH_OF_YEAR).intValue(); int day = newContext.getParsed(DAY_OF_MONTH).intValue(); int hour = newContext.getParsed(HOUR_OF_DAY).intValue(); int min = newContext.getParsed(MINUTE_OF_HOUR).intValue(); Long secVal = newContext.getParsed(SECOND_OF_MINUTE); Long nanoVal = newContext.getParsed(NANO_OF_SECOND); int sec = (secVal != null ? secVal.intValue() : 0); int nano = (nanoVal != null ? nanoVal.intValue() : 0); int offset = newContext.getParsed(OFFSET_SECONDS).intValue(); int days = 0; if (hour == 24 && min == 0 && sec == 0 && nano == 0) { hour = 0; days = 1; } else if (hour == 23 && min == 59 && sec == 60) { context.setParsedLeapSecond(); sec = 59; } int year = (int) yearParsed % 10_000; long instantSecs; try { LocalDateTime ldt = LocalDateTime.of(year, month, day, hour, min, sec, 0).plusDays(days); instantSecs = ldt.toEpochSecond(ZoneOffset.ofTotalSeconds(offset)); instantSecs += Math.multiplyExact(yearParsed / 10_000L, SECONDS_PER_10000_YEARS); } catch (RuntimeException ex) { return ~position; } int successPos = pos; successPos = context.setParsedField(INSTANT_SECONDS, instantSecs, position, successPos); return context.setParsedField(NANO_OF_SECOND, nano, position, successPos); } @Override public String toString() { return "Instant()"; } } //----------------------------------------------------------------------- /** * Prints or parses an offset ID. */ static final class OffsetIdPrinterParser implements DateTimePrinterParser { static final String[] PATTERNS = new String[] { "+HH", "+HHmm", "+HH:mm", "+HHMM", "+HH:MM", "+HHMMss", "+HH:MM:ss", "+HHMMSS", "+HH:MM:SS", "+HHmmss", "+HH:mm:ss", "+H", "+Hmm", "+H:mm", "+HMM", "+H:MM", "+HMMss", "+H:MM:ss", "+HMMSS", "+H:MM:SS", "+Hmmss", "+H:mm:ss", }; // order used in pattern builder static final OffsetIdPrinterParser INSTANCE_ID_Z = new OffsetIdPrinterParser("+HH:MM:ss", "Z"); static final OffsetIdPrinterParser INSTANCE_ID_ZERO = new OffsetIdPrinterParser("+HH:MM:ss", "0"); private final String noOffsetText; private final int type; private final int style; /** * Constructor. * * @param pattern the pattern * @param noOffsetText the text to use for UTC, not null */ OffsetIdPrinterParser(String pattern, String noOffsetText) { Objects.requireNonNull(pattern, "pattern"); Objects.requireNonNull(noOffsetText, "noOffsetText"); this.type = checkPattern(pattern); this.style = type % 11; this.noOffsetText = noOffsetText; } private int checkPattern(String pattern) { for (int i = 0; i < PATTERNS.length; i++) { if (PATTERNS[i].equals(pattern)) { return i; } } throw new IllegalArgumentException("Invalid zone offset pattern: " + pattern); } private boolean isPaddedHour() { return type < 11; } private boolean isColon() { return style > 0 && (style % 2) == 0; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Long offsetSecs = context.getValue(OFFSET_SECONDS); if (offsetSecs == null) { return false; } int totalSecs = Math.toIntExact(offsetSecs); if (totalSecs == 0) { buf.append(noOffsetText); } else { int absHours = Math.abs((totalSecs / 3600) % 100); // anything larger than 99 silently dropped int absMinutes = Math.abs((totalSecs / 60) % 60); int absSeconds = Math.abs(totalSecs % 60); int bufPos = buf.length(); int output = absHours; buf.append(totalSecs < 0 ? "-" : "+"); if (isPaddedHour() || absHours >= 10) { formatZeroPad(false, absHours, buf); } else { buf.append((char) (absHours + '0')); } if ((style >= 3 && style <= 8) || (style >= 9 && absSeconds > 0) || (style >= 1 && absMinutes > 0)) { formatZeroPad(isColon(), absMinutes, buf); output += absMinutes; if (style == 7 || style == 8 || (style >= 5 && absSeconds > 0)) { formatZeroPad(isColon(), absSeconds, buf); output += absSeconds; } } if (output == 0) { buf.setLength(bufPos); buf.append(noOffsetText); } } return true; } private void formatZeroPad(boolean colon, int value, StringBuilder buf) { buf.append(colon ? ":" : "").append((char) (value / 10 + '0')).append((char) (value % 10 + '0')); } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int length = text.length(); int noOffsetLen = noOffsetText.length(); if (noOffsetLen == 0) { if (position == length) { return context.setParsedField(OFFSET_SECONDS, 0, position, position); } } else { if (position == length) { return ~position; } if (context.subSequenceEquals(text, position, noOffsetText, 0, noOffsetLen)) { return context.setParsedField(OFFSET_SECONDS, 0, position, position + noOffsetLen); } } // parse normal plus/minus offset char sign = text.charAt(position); // IOOBE if invalid position if (sign == '+' || sign == '-') { // starts int negative = (sign == '-' ? -1 : 1); boolean isColon = isColon(); boolean paddedHour = isPaddedHour(); int[] array = new int[4]; array[0] = position + 1; int parseType = type; // select parse type when lenient if (!context.isStrict()) { if (paddedHour) { if (isColon || (parseType == 0 && length > position + 3 && text.charAt(position + 3) == ':')) { isColon = true; // needed in cases like ("+HH", "+01:01") parseType = 10; } else { parseType = 9; } } else { if (isColon || (parseType == 11 && length > position + 3 && (text.charAt(position + 2) == ':' || text.charAt(position + 3) == ':'))) { isColon = true; parseType = 21; // needed in cases like ("+H", "+1:01") } else { parseType = 20; } } } // parse according to the selected pattern switch (parseType) { case 0: // +HH case 11: // +H parseHour(text, paddedHour, array); break; case 1: // +HHmm case 2: // +HH:mm case 13: // +H:mm parseHour(text, paddedHour, array); parseMinute(text, isColon, false, array); break; case 3: // +HHMM case 4: // +HH:MM case 15: // +H:MM parseHour(text, paddedHour, array); parseMinute(text, isColon, true, array); break; case 5: // +HHMMss case 6: // +HH:MM:ss case 17: // +H:MM:ss parseHour(text, paddedHour, array); parseMinute(text, isColon, true, array); parseSecond(text, isColon, false, array); break; case 7: // +HHMMSS case 8: // +HH:MM:SS case 19: // +H:MM:SS parseHour(text, paddedHour, array); parseMinute(text, isColon, true, array); parseSecond(text, isColon, true, array); break; case 9: // +HHmmss case 10: // +HH:mm:ss case 21: // +H:mm:ss parseHour(text, paddedHour, array); parseOptionalMinuteSecond(text, isColon, array); break; case 12: // +Hmm parseVariableWidthDigits(text, 1, 4, array); break; case 14: // +HMM parseVariableWidthDigits(text, 3, 4, array); break; case 16: // +HMMss parseVariableWidthDigits(text, 3, 6, array); break; case 18: // +HMMSS parseVariableWidthDigits(text, 5, 6, array); break; case 20: // +Hmmss parseVariableWidthDigits(text, 1, 6, array); break; } if (array[0] > 0) { if (array[1] > 23 || array[2] > 59 || array[3] > 59) { throw new DateTimeException("Value out of range: Hour[0-23], Minute[0-59], Second[0-59]"); } long offsetSecs = negative * (array[1] * 3600L + array[2] * 60L + array[3]); return context.setParsedField(OFFSET_SECONDS, offsetSecs, position, array[0]); } } // handle special case of empty no offset text if (noOffsetLen == 0) { return context.setParsedField(OFFSET_SECONDS, 0, position, position); } return ~position; } private void parseHour(CharSequence parseText, boolean paddedHour, int[] array) { if (paddedHour) { // parse two digits if (!parseDigits(parseText, false, 1, array)) { array[0] = ~array[0]; } } else { // parse one or two digits parseVariableWidthDigits(parseText, 1, 2, array); } } private void parseMinute(CharSequence parseText, boolean isColon, boolean mandatory, int[] array) { if (!parseDigits(parseText, isColon, 2, array)) { if (mandatory) { array[0] = ~array[0]; } } } private void parseSecond(CharSequence parseText, boolean isColon, boolean mandatory, int[] array) { if (!parseDigits(parseText, isColon, 3, array)) { if (mandatory) { array[0] = ~array[0]; } } } private void parseOptionalMinuteSecond(CharSequence parseText, boolean isColon, int[] array) { if (parseDigits(parseText, isColon, 2, array)) { parseDigits(parseText, isColon, 3, array); } } private boolean parseDigits(CharSequence parseText, boolean isColon, int arrayIndex, int[] array) { int pos = array[0]; if (pos < 0) { return true; } if (isColon && arrayIndex != 1) { // ':' will precede only in case of minute/second if (pos + 1 > parseText.length() || parseText.charAt(pos) != ':') { return false; } pos++; } if (pos + 2 > parseText.length()) { return false; } char ch1 = parseText.charAt(pos++); char ch2 = parseText.charAt(pos++); if (ch1 < '0' || ch1 > '9' || ch2 < '0' || ch2 > '9') { return false; } int value = (ch1 - 48) * 10 + (ch2 - 48); if (value < 0 || value > 59) { return false; } array[arrayIndex] = value; array[0] = pos; return true; } private void parseVariableWidthDigits(CharSequence parseText, int minDigits, int maxDigits, int[] array) { // scan the text to find the available number of digits up to maxDigits // so long as the number available is minDigits or more, the input is valid // then parse the number of available digits int pos = array[0]; int available = 0; char[] chars = new char[maxDigits]; for (int i = 0; i < maxDigits; i++) { if (pos + 1 > parseText.length()) { break; } char ch = parseText.charAt(pos++); if (ch < '0' || ch > '9') { pos--; break; } chars[i] = ch; available++; } if (available < minDigits) { array[0] = ~array[0]; return; } switch (available) { case 1: array[1] = (chars[0] - 48); break; case 2: array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); break; case 3: array[1] = (chars[0] - 48); array[2] = ((chars[1] - 48) * 10 + (chars[2] - 48)); break; case 4: array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); array[2] = ((chars[2] - 48) * 10 + (chars[3] - 48)); break; case 5: array[1] = (chars[0] - 48); array[2] = ((chars[1] - 48) * 10 + (chars[2] - 48)); array[3] = ((chars[3] - 48) * 10 + (chars[4] - 48)); break; case 6: array[1] = ((chars[0] - 48) * 10 + (chars[1] - 48)); array[2] = ((chars[2] - 48) * 10 + (chars[3] - 48)); array[3] = ((chars[4] - 48) * 10 + (chars[5] - 48)); break; } array[0] = pos; } @Override public String toString() { String converted = noOffsetText.replace("'", "''"); return "Offset(" + PATTERNS[type] + ",'" + converted + "')"; } } //----------------------------------------------------------------------- /** * Prints or parses an offset ID. */ static final class LocalizedOffsetIdPrinterParser implements DateTimePrinterParser { private final TextStyle style; /** * Constructor. * * @param style the style, not null */ LocalizedOffsetIdPrinterParser(TextStyle style) { this.style = style; } private static StringBuilder appendHMS(StringBuilder buf, int t) { return buf.append((char) (t / 10 + '0')).append((char) (t % 10 + '0')); } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Long offsetSecs = context.getValue(OFFSET_SECONDS); if (offsetSecs == null) { return false; } String gmtText = "GMT"; // TODO: get localized version of 'GMT' buf.append(gmtText); int totalSecs = Math.toIntExact(offsetSecs); if (totalSecs != 0) { int absHours = Math.abs((totalSecs / 3600) % 100); // anything larger than 99 silently dropped int absMinutes = Math.abs((totalSecs / 60) % 60); int absSeconds = Math.abs(totalSecs % 60); buf.append(totalSecs < 0 ? "-" : "+"); if (style == TextStyle.FULL) { appendHMS(buf, absHours); buf.append(':'); appendHMS(buf, absMinutes); if (absSeconds != 0) { buf.append(':'); appendHMS(buf, absSeconds); } } else { if (absHours >= 10) { buf.append((char) (absHours / 10 + '0')); } buf.append((char) (absHours % 10 + '0')); if (absMinutes != 0 || absSeconds != 0) { buf.append(':'); appendHMS(buf, absMinutes); if (absSeconds != 0) { buf.append(':'); appendHMS(buf, absSeconds); } } } } return true; } int getDigit(CharSequence text, int position) { char c = text.charAt(position); if (c < '0' || c > '9') { return -1; } return c - '0'; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int pos = position; int end = text.length(); String gmtText = "GMT"; // TODO: get localized version of 'GMT' if (!context.subSequenceEquals(text, pos, gmtText, 0, gmtText.length())) { return ~position; } pos += gmtText.length(); // parse normal plus/minus offset int negative = 0; if (pos == end) { return context.setParsedField(OFFSET_SECONDS, 0, position, pos); } char sign = text.charAt(pos); // IOOBE if invalid position if (sign == '+') { negative = 1; } else if (sign == '-') { negative = -1; } else { return context.setParsedField(OFFSET_SECONDS, 0, position, pos); } pos++; int h = 0; int m = 0; int s = 0; if (style == TextStyle.FULL) { int h1 = getDigit(text, pos++); int h2 = getDigit(text, pos++); if (h1 < 0 || h2 < 0 || text.charAt(pos++) != ':') { return ~position; } h = h1 * 10 + h2; int m1 = getDigit(text, pos++); int m2 = getDigit(text, pos++); if (m1 < 0 || m2 < 0) { return ~position; } m = m1 * 10 + m2; if (pos + 2 < end && text.charAt(pos) == ':') { int s1 = getDigit(text, pos + 1); int s2 = getDigit(text, pos + 2); if (s1 >= 0 && s2 >= 0) { s = s1 * 10 + s2; pos += 3; } } } else { h = getDigit(text, pos++); if (h < 0) { return ~position; } if (pos < end) { int h2 = getDigit(text, pos); if (h2 >= 0) { h = h * 10 + h2; pos++; } if (pos + 2 < end && text.charAt(pos) == ':') { if (pos + 2 < end && text.charAt(pos) == ':') { int m1 = getDigit(text, pos + 1); int m2 = getDigit(text, pos + 2); if (m1 >= 0 && m2 >= 0) { m = m1 * 10 + m2; pos += 3; if (pos + 2 < end && text.charAt(pos) == ':') { int s1 = getDigit(text, pos + 1); int s2 = getDigit(text, pos + 2); if (s1 >= 0 && s2 >= 0) { s = s1 * 10 + s2; pos += 3; } } } } } } } long offsetSecs = negative * (h * 3600L + m * 60L + s); return context.setParsedField(OFFSET_SECONDS, offsetSecs, position, pos); } @Override public String toString() { return "LocalizedOffset(" + style + ")"; } } //----------------------------------------------------------------------- /** * Prints or parses a zone ID. */ static final class ZoneTextPrinterParser extends ZoneIdPrinterParser { /** The text style to output. */ private final TextStyle textStyle; /** The preferred zoneid map */ private Set<String> preferredZones; /** Display in generic time-zone format. True in case of pattern letter 'v' */ private final boolean isGeneric; ZoneTextPrinterParser(TextStyle textStyle, Set<ZoneId> preferredZones, boolean isGeneric) { super(TemporalQueries.zone(), "ZoneText(" + textStyle + ")"); this.textStyle = Objects.requireNonNull(textStyle, "textStyle"); this.isGeneric = isGeneric; if (preferredZones != null && preferredZones.size() != 0) { this.preferredZones = new HashSet<>(); for (ZoneId id : preferredZones) { this.preferredZones.add(id.getId()); } } } private static final int STD = 0; private static final int DST = 1; private static final int GENERIC = 2; private static final Map<String, SoftReference<Map<Locale, String[]>>> cache = new ConcurrentHashMap<>(); private String getDisplayName(String id, int type, Locale locale) { if (textStyle == TextStyle.NARROW) { return null; } String[] names; SoftReference<Map<Locale, String[]>> ref = cache.get(id); Map<Locale, String[]> perLocale = null; if (ref == null || (perLocale = ref.get()) == null || (names = perLocale.get(locale)) == null) { names = TimeZoneNameUtility.retrieveDisplayNames(id, locale); if (names == null) { return null; } names = Arrays.copyOfRange(names, 0, 7); names[5] = TimeZoneNameUtility.retrieveGenericDisplayName(id, TimeZone.LONG, locale); if (names[5] == null) { names[5] = names[0]; // use the id } names[6] = TimeZoneNameUtility.retrieveGenericDisplayName(id, TimeZone.SHORT, locale); if (names[6] == null) { names[6] = names[0]; } if (perLocale == null) { perLocale = new ConcurrentHashMap<>(); } perLocale.put(locale, names); cache.put(id, new SoftReference<>(perLocale)); } switch (type) { case STD: return names[textStyle.zoneNameStyleIndex() + 1]; case DST: return names[textStyle.zoneNameStyleIndex() + 3]; } return names[textStyle.zoneNameStyleIndex() + 5]; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { ZoneId zone = context.getValue(TemporalQueries.zoneId()); if (zone == null) { return false; } String zname = zone.getId(); if (!(zone instanceof ZoneOffset)) { TemporalAccessor dt = context.getTemporal(); int type = GENERIC; if (!isGeneric) { if (dt.isSupported(ChronoField.INSTANT_SECONDS)) { type = zone.getRules().isDaylightSavings(Instant.from(dt)) ? DST : STD; } else if (dt.isSupported(ChronoField.EPOCH_DAY) && dt.isSupported(ChronoField.NANO_OF_DAY)) { LocalDate date = LocalDate.ofEpochDay(dt.getLong(ChronoField.EPOCH_DAY)); LocalTime time = LocalTime.ofNanoOfDay(dt.getLong(ChronoField.NANO_OF_DAY)); LocalDateTime ldt = date.atTime(time); if (zone.getRules().getTransition(ldt) == null) { type = zone.getRules().isDaylightSavings(ldt.atZone(zone).toInstant()) ? DST : STD; } } } String name = getDisplayName(zname, type, context.getLocale()); if (name != null) { zname = name; } } buf.append(zname); return true; } // cache per instance for now private final Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> cachedTree = new HashMap<>(); private final Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> cachedTreeCI = new HashMap<>(); @Override protected PrefixTree getTree(DateTimeParseContext context) { if (textStyle == TextStyle.NARROW) { return super.getTree(context); } Locale locale = context.getLocale(); boolean isCaseSensitive = context.isCaseSensitive(); Set<String> regionIds = ZoneRulesProvider.getAvailableZoneIds(); int regionIdsSize = regionIds.size(); Map<Locale, Entry<Integer, SoftReference<PrefixTree>>> cached = isCaseSensitive ? cachedTree : cachedTreeCI; Entry<Integer, SoftReference<PrefixTree>> entry = null; PrefixTree tree = null; String[][] zoneStrings = null; if ((entry = cached.get(locale)) == null || (entry.getKey() != regionIdsSize || (tree = entry.getValue().get()) == null)) { tree = PrefixTree.newTree(context); zoneStrings = TimeZoneNameUtility.getZoneStrings(locale); for (String[] names : zoneStrings) { String zid = names[0]; if (!regionIds.contains(zid)) { continue; } tree.add(zid, zid); // don't convert zid -> metazone zid = ZoneName.toZid(zid, locale); int i = textStyle == TextStyle.FULL ? 1 : 2; for (; i < names.length; i += 2) { tree.add(names[i], zid); } } // if we have a set of preferred zones, need a copy and // add the preferred zones again to overwrite if (preferredZones != null) { for (String[] names : zoneStrings) { String zid = names[0]; if (!preferredZones.contains(zid) || !regionIds.contains(zid)) { continue; } int i = textStyle == TextStyle.FULL ? 1 : 2; for (; i < names.length; i += 2) { tree.add(names[i], zid); } } } cached.put(locale, new SimpleImmutableEntry<>(regionIdsSize, new SoftReference<>(tree))); } return tree; } } //----------------------------------------------------------------------- /** * Prints or parses a zone ID. */ static class ZoneIdPrinterParser implements DateTimePrinterParser { private final TemporalQuery<ZoneId> query; private final String description; ZoneIdPrinterParser(TemporalQuery<ZoneId> query, String description) { this.query = query; this.description = description; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { ZoneId zone = context.getValue(query); if (zone == null) { return false; } buf.append(zone.getId()); return true; } /** * The cached tree to speed up parsing. */ private static volatile Entry<Integer, PrefixTree> cachedPrefixTree; private static volatile Entry<Integer, PrefixTree> cachedPrefixTreeCI; protected PrefixTree getTree(DateTimeParseContext context) { // prepare parse tree Set<String> regionIds = ZoneRulesProvider.getAvailableZoneIds(); final int regionIdsSize = regionIds.size(); Entry<Integer, PrefixTree> cached = context.isCaseSensitive() ? cachedPrefixTree : cachedPrefixTreeCI; if (cached == null || cached.getKey() != regionIdsSize) { synchronized (this) { cached = context.isCaseSensitive() ? cachedPrefixTree : cachedPrefixTreeCI; if (cached == null || cached.getKey() != regionIdsSize) { cached = new SimpleImmutableEntry<>(regionIdsSize, PrefixTree.newTree(regionIds, context)); if (context.isCaseSensitive()) { cachedPrefixTree = cached; } else { cachedPrefixTreeCI = cached; } } } } return cached.getValue(); } /** * This implementation looks for the longest matching string. * For example, parsing Etc/GMT-2 will return Etc/GMC-2 rather than just * Etc/GMC although both are valid. */ @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { int length = text.length(); if (position > length) { throw new IndexOutOfBoundsException(); } if (position == length) { return ~position; } // handle fixed time-zone IDs char nextChar = text.charAt(position); if (nextChar == '+' || nextChar == '-') { return parseOffsetBased(context, text, position, position, OffsetIdPrinterParser.INSTANCE_ID_Z); } else if (length >= position + 2) { char nextNextChar = text.charAt(position + 1); if (context.charEquals(nextChar, 'U') && context.charEquals(nextNextChar, 'T')) { if (length >= position + 3 && context.charEquals(text.charAt(position + 2), 'C')) { return parseOffsetBased(context, text, position, position + 3, OffsetIdPrinterParser.INSTANCE_ID_ZERO); } return parseOffsetBased(context, text, position, position + 2, OffsetIdPrinterParser.INSTANCE_ID_ZERO); } else if (context.charEquals(nextChar, 'G') && length >= position + 3 && context.charEquals(nextNextChar, 'M') && context.charEquals(text.charAt(position + 2), 'T')) { if (length >= position + 4 && context.charEquals(text.charAt(position + 3), '0')) { context.setParsed(ZoneId.of("GMT0")); return position + 4; } return parseOffsetBased(context, text, position, position + 3, OffsetIdPrinterParser.INSTANCE_ID_ZERO); } } // parse PrefixTree tree = getTree(context); ParsePosition ppos = new ParsePosition(position); String parsedZoneId = tree.match(text, ppos); if (parsedZoneId == null) { if (context.charEquals(nextChar, 'Z')) { context.setParsed(ZoneOffset.UTC); return position + 1; } return ~position; } context.setParsed(ZoneId.of(parsedZoneId)); return ppos.getIndex(); } /** * Parse an offset following a prefix and set the ZoneId if it is valid. * To matching the parsing of ZoneId.of the values are not normalized * to ZoneOffsets. * * @param context the parse context * @param text the input text * @param prefixPos start of the prefix * @param position start of text after the prefix * @param parser parser for the value after the prefix * @return the position after the parse */ private int parseOffsetBased(DateTimeParseContext context, CharSequence text, int prefixPos, int position, OffsetIdPrinterParser parser) { String prefix = text.subSequence(prefixPos, position).toString().toUpperCase(); if (position >= text.length()) { context.setParsed(ZoneId.of(prefix)); return position; } // '0' or 'Z' after prefix is not part of a valid ZoneId; use bare prefix if (text.charAt(position) == '0' || context.charEquals(text.charAt(position), 'Z')) { context.setParsed(ZoneId.of(prefix)); return position; } DateTimeParseContext newContext = context.copy(); int endPos = parser.parse(newContext, text, position); try { if (endPos < 0) { if (parser == OffsetIdPrinterParser.INSTANCE_ID_Z) { return ~prefixPos; } context.setParsed(ZoneId.of(prefix)); return position; } int offset = (int) newContext.getParsed(OFFSET_SECONDS).longValue(); ZoneOffset zoneOffset = ZoneOffset.ofTotalSeconds(offset); context.setParsed(ZoneId.ofOffset(prefix, zoneOffset)); return endPos; } catch (DateTimeException dte) { return ~prefixPos; } } @Override public String toString() { return description; } } //----------------------------------------------------------------------- /** * A String based prefix tree for parsing time-zone names. */ static class PrefixTree { protected String key; protected String value; protected char c0; // performance optimization to avoid the // boundary check cost of key.charat(0) protected PrefixTree child; protected PrefixTree sibling; private PrefixTree(String k, String v, PrefixTree child) { this.key = k; this.value = v; this.child = child; if (k.isEmpty()) { c0 = 0xffff; } else { c0 = key.charAt(0); } } /** * Creates a new prefix parsing tree based on parse context. * * @param context the parse context * @return the tree, not null */ public static PrefixTree newTree(DateTimeParseContext context) { //if (!context.isStrict()) { // return new LENIENT("", null, null); //} if (context.isCaseSensitive()) { return new PrefixTree("", null, null); } return new CI("", null, null); } /** * Creates a new prefix parsing tree. * * @param keys a set of strings to build the prefix parsing tree, not null * @param context the parse context * @return the tree, not null */ public static PrefixTree newTree(Set<String> keys, DateTimeParseContext context) { PrefixTree tree = newTree(context); for (String k : keys) { tree.add0(k, k); } return tree; } /** * Clone a copy of this tree */ public PrefixTree copyTree() { PrefixTree copy = new PrefixTree(key, value, null); if (child != null) { copy.child = child.copyTree(); } if (sibling != null) { copy.sibling = sibling.copyTree(); } return copy; } /** * Adds a pair of {key, value} into the prefix tree. * * @param k the key, not null * @param v the value, not null * @return true if the pair is added successfully */ public boolean add(String k, String v) { return add0(k, v); } private boolean add0(String k, String v) { k = toKey(k); int prefixLen = prefixLength(k); if (prefixLen == key.length()) { if (prefixLen < k.length()) { // down the tree String subKey = k.substring(prefixLen); PrefixTree c = child; while (c != null) { if (isEqual(c.c0, subKey.charAt(0))) { return c.add0(subKey, v); } c = c.sibling; } // add the node as the child of the current node c = newNode(subKey, v, null); c.sibling = child; child = c; return true; } // have an existing <key, value> already, overwrite it // if (value != null) { // return false; //} value = v; return true; } // split the existing node PrefixTree n1 = newNode(key.substring(prefixLen), value, child); key = k.substring(0, prefixLen); child = n1; if (prefixLen < k.length()) { PrefixTree n2 = newNode(k.substring(prefixLen), v, null); child.sibling = n2; value = null; } else { value = v; } return true; } /** * Match text with the prefix tree. * * @param text the input text to parse, not null * @param off the offset position to start parsing at * @param end the end position to stop parsing * @return the resulting string, or null if no match found. */ public String match(CharSequence text, int off, int end) { if (!prefixOf(text, off, end)) { return null; } if (child != null && (off += key.length()) != end) { PrefixTree c = child; do { if (isEqual(c.c0, text.charAt(off))) { String found = c.match(text, off, end); if (found != null) { return found; } return value; } c = c.sibling; } while (c != null); } return value; } /** * Match text with the prefix tree. * * @param text the input text to parse, not null * @param pos the position to start parsing at, from 0 to the text * length. Upon return, position will be updated to the new parse * position, or unchanged, if no match found. * @return the resulting string, or null if no match found. */ public String match(CharSequence text, ParsePosition pos) { int off = pos.getIndex(); int end = text.length(); if (!prefixOf(text, off, end)) { return null; } off += key.length(); if (child != null && off != end) { PrefixTree c = child; do { if (isEqual(c.c0, text.charAt(off))) { pos.setIndex(off); String found = c.match(text, pos); if (found != null) { return found; } break; } c = c.sibling; } while (c != null); } pos.setIndex(off); return value; } protected String toKey(String k) { return k; } protected PrefixTree newNode(String k, String v, PrefixTree child) { return new PrefixTree(k, v, child); } protected boolean isEqual(char c1, char c2) { return c1 == c2; } protected boolean prefixOf(CharSequence text, int off, int end) { if (text instanceof String) { return ((String) text).startsWith(key, off); } int len = key.length(); if (len > end - off) { return false; } int off0 = 0; while (len-- > 0) { if (!isEqual(key.charAt(off0++), text.charAt(off++))) { return false; } } return true; } private int prefixLength(String k) { int off = 0; while (off < k.length() && off < key.length()) { if (!isEqual(k.charAt(off), key.charAt(off))) { return off; } off++; } return off; } /** * Case Insensitive prefix tree. */ private static class CI extends PrefixTree { private CI(String k, String v, PrefixTree child) { super(k, v, child); } @Override protected CI newNode(String k, String v, PrefixTree child) { return new CI(k, v, child); } @Override protected boolean isEqual(char c1, char c2) { return DateTimeParseContext.charEqualsIgnoreCase(c1, c2); } @Override protected boolean prefixOf(CharSequence text, int off, int end) { int len = key.length(); if (len > end - off) { return false; } int off0 = 0; while (len-- > 0) { if (!isEqual(key.charAt(off0++), text.charAt(off++))) { return false; } } return true; } } /** * Lenient prefix tree. Case insensitive and ignores characters * like space, underscore and slash. */ private static class LENIENT extends CI { private LENIENT(String k, String v, PrefixTree child) { super(k, v, child); } @Override protected CI newNode(String k, String v, PrefixTree child) { return new LENIENT(k, v, child); } private boolean isLenientChar(char c) { return c == ' ' || c == '_' || c == '/'; } protected String toKey(String k) { for (int i = 0; i < k.length(); i++) { if (isLenientChar(k.charAt(i))) { StringBuilder sb = new StringBuilder(k.length()); sb.append(k, 0, i); i++; while (i < k.length()) { if (!isLenientChar(k.charAt(i))) { sb.append(k.charAt(i)); } i++; } return sb.toString(); } } return k; } @Override public String match(CharSequence text, ParsePosition pos) { int off = pos.getIndex(); int end = text.length(); int len = key.length(); int koff = 0; while (koff < len && off < end) { if (isLenientChar(text.charAt(off))) { off++; continue; } if (!isEqual(key.charAt(koff++), text.charAt(off++))) { return null; } } if (koff != len) { return null; } if (child != null && off != end) { int off0 = off; while (off0 < end && isLenientChar(text.charAt(off0))) { off0++; } if (off0 < end) { PrefixTree c = child; do { if (isEqual(c.c0, text.charAt(off0))) { pos.setIndex(off0); String found = c.match(text, pos); if (found != null) { return found; } break; } c = c.sibling; } while (c != null); } } pos.setIndex(off); return value; } } } //----------------------------------------------------------------------- /** * Prints or parses a chronology. */ static final class ChronoPrinterParser implements DateTimePrinterParser { /** The text style to output, null means the ID. */ private final TextStyle textStyle; ChronoPrinterParser(TextStyle textStyle) { // validated by caller this.textStyle = textStyle; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Chronology chrono = context.getValue(TemporalQueries.chronology()); if (chrono == null) { return false; } if (textStyle == null) { buf.append(chrono.getId()); } else { buf.append(getChronologyName(chrono, context.getLocale())); } return true; } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { // simple looping parser to find the chronology if (position < 0 || position > text.length()) { throw new IndexOutOfBoundsException(); } Set<Chronology> chronos = Chronology.getAvailableChronologies(); Chronology bestMatch = null; int matchLen = -1; for (Chronology chrono : chronos) { String name; if (textStyle == null) { name = chrono.getId(); } else { name = getChronologyName(chrono, context.getLocale()); } int nameLen = name.length(); if (nameLen > matchLen && context.subSequenceEquals(text, position, name, 0, nameLen)) { bestMatch = chrono; matchLen = nameLen; } } if (bestMatch == null) { return ~position; } context.setParsed(bestMatch); return position + matchLen; } /** * Returns the chronology name of the given chrono in the given locale * if available, or the chronology Id otherwise. The regular ResourceBundle * search path is used for looking up the chronology name. * * @param chrono the chronology, not null * @param locale the locale, not null * @return the chronology name of chrono in locale, or the id if no name is available * @throws NullPointerException if chrono or locale is null */ private String getChronologyName(Chronology chrono, Locale locale) { String key = "calendarname." + chrono.getCalendarType(); String name = DateTimeTextProvider.getLocalizedResource(key, locale); return Objects.requireNonNullElseGet(name, () -> chrono.getId()); } } //----------------------------------------------------------------------- /** * Prints or parses a localized pattern. */ static final class LocalizedPrinterParser implements DateTimePrinterParser { /** Cache of formatters. */ private static final ConcurrentMap<String, DateTimeFormatter> FORMATTER_CACHE = new ConcurrentHashMap<>(16, 0.75f, 2); private final FormatStyle dateStyle; private final FormatStyle timeStyle; /** * Constructor. * * @param dateStyle the date style to use, may be null * @param timeStyle the time style to use, may be null */ LocalizedPrinterParser(FormatStyle dateStyle, FormatStyle timeStyle) { // validated by caller this.dateStyle = dateStyle; this.timeStyle = timeStyle; } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { Chronology chrono = Chronology.from(context.getTemporal()); return formatter(context.getLocale(), chrono).toPrinterParser(false).format(context, buf); } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { Chronology chrono = context.getEffectiveChronology(); return formatter(context.getLocale(), chrono).toPrinterParser(false).parse(context, text, position); } /** * Gets the formatter to use. * <p> * The formatter will be the most appropriate to use for the date and time style in the locale. * For example, some locales will use the month name while others will use the number. * * @param locale the locale to use, not null * @param chrono the chronology to use, not null * @return the formatter, not null * @throws IllegalArgumentException if the formatter cannot be found */ private DateTimeFormatter formatter(Locale locale, Chronology chrono) { String key = chrono.getId() + '|' + locale.toString() + '|' + dateStyle + timeStyle; DateTimeFormatter formatter = FORMATTER_CACHE.get(key); if (formatter == null) { String pattern = getLocalizedDateTimePattern(dateStyle, timeStyle, chrono, locale); formatter = new DateTimeFormatterBuilder().appendPattern(pattern).toFormatter(locale); DateTimeFormatter old = FORMATTER_CACHE.putIfAbsent(key, formatter); if (old != null) { formatter = old; } } return formatter; } @Override public String toString() { return "Localized(" + (dateStyle != null ? dateStyle : "") + "," + (timeStyle != null ? timeStyle : "") + ")"; } } //----------------------------------------------------------------------- /** * Prints or parses a localized pattern from a localized field. * The specific formatter and parameters is not selected until * the field is to be printed or parsed. * The locale is needed to select the proper WeekFields from which * the field for day-of-week, week-of-month, or week-of-year is selected. * Hence the inherited field NumberPrinterParser.field is unused. */ static final class WeekBasedFieldPrinterParser extends NumberPrinterParser { private char chr; private int count; /** * Constructor. * * @param chr the pattern format letter that added this PrinterParser. * @param count the repeat count of the format letter * @param minWidth the minimum field width, from 1 to 19 * @param maxWidth the maximum field width, from minWidth to 19 */ WeekBasedFieldPrinterParser(char chr, int count, int minWidth, int maxWidth) { this(chr, count, minWidth, maxWidth, 0); } /** * Constructor. * * @param chr the pattern format letter that added this PrinterParser. * @param count the repeat count of the format letter * @param minWidth the minimum field width, from 1 to 19 * @param maxWidth the maximum field width, from minWidth to 19 * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater, * -1 if fixed width due to active adjacent parsing */ WeekBasedFieldPrinterParser(char chr, int count, int minWidth, int maxWidth, int subsequentWidth) { super(null, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, subsequentWidth); this.chr = chr; this.count = count; } /** * Returns a new instance with fixed width flag set. * * @return a new updated printer-parser, not null */ @Override WeekBasedFieldPrinterParser withFixedWidth() { if (subsequentWidth == -1) { return this; } return new WeekBasedFieldPrinterParser(chr, count, minWidth, maxWidth, -1); } /** * Returns a new instance with an updated subsequent width. * * @param subsequentWidth the width of subsequent non-negative numbers, 0 or greater * @return a new updated printer-parser, not null */ @Override WeekBasedFieldPrinterParser withSubsequentWidth(int subsequentWidth) { return new WeekBasedFieldPrinterParser(chr, count, minWidth, maxWidth, this.subsequentWidth + subsequentWidth); } @Override public boolean format(DateTimePrintContext context, StringBuilder buf) { return printerParser(context.getLocale()).format(context, buf); } @Override public int parse(DateTimeParseContext context, CharSequence text, int position) { return printerParser(context.getLocale()).parse(context, text, position); } /** * Gets the printerParser to use based on the field and the locale. * * @param locale the locale to use, not null * @return the formatter, not null * @throws IllegalArgumentException if the formatter cannot be found */ private DateTimePrinterParser printerParser(Locale locale) { WeekFields weekDef = WeekFields.of(locale); TemporalField field = null; switch (chr) { case 'Y': field = weekDef.weekBasedYear(); if (count == 2) { return new ReducedPrinterParser(field, 2, 2, 0, ReducedPrinterParser.BASE_DATE, this.subsequentWidth); } else { return new NumberPrinterParser(field, count, 19, (count < 4) ? SignStyle.NORMAL : SignStyle.EXCEEDS_PAD, this.subsequentWidth); } case 'e': case 'c': field = weekDef.dayOfWeek(); break; case 'w': field = weekDef.weekOfWeekBasedYear(); break; case 'W': field = weekDef.weekOfMonth(); break; default: throw new IllegalStateException("unreachable"); } return new NumberPrinterParser(field, minWidth, maxWidth, SignStyle.NOT_NEGATIVE, this.subsequentWidth); } @Override public String toString() { StringBuilder sb = new StringBuilder(30); sb.append("Localized("); if (chr == 'Y') { if (count == 1) { sb.append("WeekBasedYear"); } else if (count == 2) { sb.append("ReducedValue(WeekBasedYear,2,2,2000-01-01)"); } else { sb.append("WeekBasedYear,").append(count).append(",").append(19).append(",") .append((count < 4) ? SignStyle.NORMAL : SignStyle.EXCEEDS_PAD); } } else { switch (chr) { case 'c': case 'e': sb.append("DayOfWeek"); break; case 'w': sb.append("WeekOfWeekBasedYear"); break; case 'W': sb.append("WeekOfMonth"); break; default: break; } sb.append(","); sb.append(count); } sb.append(")"); return sb.toString(); } } //------------------------------------------------------------------------- /** * Length comparator. */ static final Comparator<String> LENGTH_SORT = new Comparator<String>() { @Override public int compare(String str1, String str2) { return str1.length() == str2.length() ? str1.compareTo(str2) : str1.length() - str2.length(); } }; }