Java Parse Date Pattern YYYY parseRegExcelNumber(String number)

Description

parse Reg Excel Number

License

Apache License

Declaration

private static String parseRegExcelNumber(String number) 

Method Source Code

//package com.java2s;
/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * 
 * Copyright 2013 Joseph Yuan/*from ww w .java2 s.  com*/
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 * 
 * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * */

import java.text.SimpleDateFormat;

import java.util.Calendar;

import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class Main {
    private static String parseRegExcelNumber(String number) {
        String today_d = formatToday("dd"), today_m = formatToday("MM"), today_y = formatToday("yyyy");
        String regex = "(" + today_y.substring(0, 2) + ")?"
                + today_y.substring(2) + today_m + today_d;
        Pattern p = Pattern.compile(regex);
        Matcher m = p.matcher(number);
        String buf = "";
        if (m.find()) {
            if (m.group().length() == 6) {
                buf = (m.start() == 0 ? "" : "<NUMBER>")
                        + "<DATE:TODAY:YYMMDD>"
                        + (m.end() == number.length() ? "" : "<NUMBER>");
            } else {
                buf = (m.start() == 0 ? "" : "<NUMBER>")
                        + "<DATE:TODAY:YYYYMMDD>"
                        + (m.end() == number.length() ? "" : "<NUMBER>");
            }
            return buf;
        }
        String yesterday_d = formatYesterday("dd"), yesterday_m = formatYesterday("MM"), yesterday_y = formatYesterday("yyyy");
        regex = "(" + yesterday_y.substring(0, 2) + ")?"
                + yesterday_y.substring(2) + yesterday_m + yesterday_d;
        p = Pattern.compile(regex);
        m = p.matcher(number);
        buf = "";
        if (m.find()) {
            if (m.group().length() == 6) {
                buf = (m.start() == 0 ? "" : "<NUMBER>")
                        + "<DATE:YESTERDAY:YYMMDD>"
                        + (m.end() == number.length() ? "" : "<NUMBER>");
            } else {
                buf = (m.start() == 0 ? "" : "<NUMBER>")
                        + "<DATE:YESTERDAY:YYYYMMDD>"
                        + (m.end() == number.length() ? "" : "<NUMBER>");
            }
            return buf;
        }
        return "<NUMBER>";

    }

    public static String formatToday() {
        return formatDate("MM.dd.yy", 0, 0, 0);
    }

    public static String formatToday(String format) {
        return formatDate(format, 0, 0, 0);
    }

    public static String formatYesterday() {
        return formatDate("MM.dd.yy", 0, 0, -1);
    }

    public static String formatYesterday(String format) {
        return formatDate(format, 0, 0, -1);
    }

    public static String formatDate(String format, int offset_years,
            int offset_months, int offset_days) {
        Calendar date = Calendar.getInstance();
        date.add(Calendar.YEAR, offset_years);
        date.add(Calendar.MONTH, offset_months);
        date.add(Calendar.DATE, offset_days);
        return formatDate(format, date);
    }

    public static String formatDate(Calendar c) {
        return (new SimpleDateFormat("MM.dd.yy")).format(c.getTime());
    }

    public static String formatDate(String format, Calendar c) {
        return (new SimpleDateFormat(format)).format(c.getTime());
    }
}

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