shade.com.alibaba.fastjson2.reader.ObjectReaderImplCalendar Maven / Gradle / Ivy

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package com.alibaba.fastjson2.reader;

import com.alibaba.fastjson2.JSONReader;
import com.alibaba.fastjson2.codec.DateTimeCodec;

import java.lang.reflect.Type;
import java.time.LocalDateTime;
import java.time.ZonedDateTime;
import java.time.format.DateTimeFormatter;
import java.util.Calendar;
import java.util.Locale;

final class ObjectReaderImplCalendar
        extends DateTimeCodec
        implements ObjectReader {
    static final ObjectReaderImplCalendar INSTANCE = new ObjectReaderImplCalendar(null, null);

    public static ObjectReaderImplCalendar of(String format, Locale locale) {
        if (format == null) {
            return INSTANCE;
        }

        return new ObjectReaderImplCalendar(format, locale);
    }

    public ObjectReaderImplCalendar(String format, Locale locale) {
        super(format, locale);
    }

    @Override
    public Class getObjectClass() {
        return Calendar.class;
    }

    @Override
    public Object readJSONBObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
        if (jsonReader.isInt()) {
            long millis = jsonReader.readInt64Value();

            if (formatUnixTime) {
                millis *= 1000;
            }

            Calendar calendar = Calendar.getInstance();
            calendar.setTimeInMillis(millis);
            return calendar;
        }

        if (jsonReader.readIfNull()) {
            return null;
        }

        long millis = jsonReader.readMillisFromString();
        if (formatUnixTime) {
            millis *= 1000;
        }

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(millis);
        return calendar;
    }

    @Override
    public Object readObject(JSONReader jsonReader, Type fieldType, Object fieldName, long features) {
        if (jsonReader.isString()) {
            if (format != null) {
                DateTimeFormatter formatter = getDateFormatter();
                if (formatter != null) {
                    String str = jsonReader.readString();
                    if (str.isEmpty()) {
                        return null;
                    }

                    LocalDateTime ldt = LocalDateTime.parse(str, formatter);
                    ZonedDateTime zdt = ZonedDateTime.of(ldt, jsonReader.getContext().getZoneId());

                    long millis = zdt.toInstant().toEpochMilli();
                    Calendar calendar = Calendar.getInstance();
                    calendar.setTimeInMillis(millis);
                    return calendar;
                }
            }

            long millis = jsonReader.readMillisFromString();
            if (millis == 0 && jsonReader.wasNull()) {
                return null;
            }

            if (formatUnixTime) {
                millis *= 1000;
            }

            Calendar calendar = Calendar.getInstance();
            calendar.setTimeInMillis(millis);
            return calendar;
        }

        if (jsonReader.readIfNull()) {
            return null;
        }

        long millis = jsonReader.readInt64Value();
        if (formatUnixTime || jsonReader.getContext().isFormatUnixTime()) {
            millis *= 1000;
        }

        Calendar calendar = Calendar.getInstance();
        calendar.setTimeInMillis(millis);
        return calendar;
    }
}