com.surfs.storage.web.utils.Stringutils.java Source code

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Here is the source code for com.surfs.storage.web.utils.Stringutils.java

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/* This Source Code Form is subject to the terms of the Mozilla Public
 * License, v. 2.0. If a copy of the MPL was not distributed with this
 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
package com.surfs.storage.web.utils;

import java.math.BigDecimal;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;

import org.apache.commons.lang.StringUtils;

public class Stringutils {

    public static void main(String[] args) {

    }

    public static String compareReturnBerfore(String baseDate, String strDate) {
        SimpleDateFormat sdf_us = new SimpleDateFormat("EEE MMM dd HH:mm yyyy", Locale.US);
        SimpleDateFormat sdf_cn = new SimpleDateFormat("yyyy-MM-dd HH:mm");

        if (StringUtils.isBlank(baseDate)) {
            if (StringUtils.isBlank(strDate)) {
                return null;
            } else {
                try {
                    Date date = sdf_us.parse(strDate);
                    return sdf_cn.format(date);
                } catch (ParseException e) {
                    e.printStackTrace();
                    return null;
                }
            }
        }

        try {
            /*String date_us1 = sdf_cn.format(sdf_us.parse(strDate1));*/
            String date_us2 = sdf_cn.format(sdf_us.parse(strDate));
            if (baseDate.compareTo(date_us2) <= 0)
                return baseDate;
            else if (baseDate.compareTo(date_us2) > 0)
                return date_us2;
        } catch (ParseException e) {
            e.printStackTrace();
            return null;
        }
        return strDate;
    }

    public static String sumSpace(String totalSpace, String currentSpace) {
        if (StringUtils.isBlank(totalSpace)) {
            return convertToKB(currentSpace);
        }

        //String total = convertToKB(totalSpace);
        String current = convertToKB(currentSpace);
        BigDecimal sum = new BigDecimal(totalSpace);
        long sumNum = sum.add(new BigDecimal(current)).longValue();

        //BigDecimal sumTB = new BigDecimal(sumNum);
        //double divSum = sumTB.divide(new BigDecimal("1048576"), 2, BigDecimal.ROUND_HALF_UP).doubleValue();

        //return String.valueOf(divSum).concat("T");
        return String.valueOf(sumNum);
    }

    public static String convertToKB(String total) {
        if (StringUtils.isBlank(total)) {
            return total;
        }

        String space = total.substring(0, total.length() - 1);
        String unit = total.substring(total.length() - 1, total.length());

        BigDecimal t = new BigDecimal(space);
        BigDecimal multiply = null;

        if (unit.equalsIgnoreCase("M")) {
            multiply = t.multiply(new BigDecimal("1048576"));
        } else if (unit.equalsIgnoreCase("T")) {
            multiply = t.multiply(new BigDecimal("1099511627776"));
        } else if (unit.equalsIgnoreCase("G")) {
            multiply = t.multiply(new BigDecimal("1073741824"));
        }

        return String.valueOf(multiply.doubleValue());
    }

    public static long subtractSpace(String totalSpace, String freeSpace) {
        //String total = convertToKB(totalSpace);
        //String free = convertToKB(freeSpace);

        BigDecimal subtract = new BigDecimal(totalSpace);
        long subtractNum = subtract.subtract(new BigDecimal(freeSpace)).longValue();

        /*BigDecimal subtractTB = new BigDecimal(subtractNum);
        double divSum = subtractTB.divide(new BigDecimal("1048576"), 2, BigDecimal.ROUND_HALF_UP).doubleValue();
        return String.valueOf(divSum).concat("T");*/
        return subtractNum;
    }

    public static long compareDate(long date1, String date2) {
        if (date1 == 0) {
            return Long.parseLong(date2);
        }

        long time2 = Long.parseLong(date2);

        if (date1 > time2)
            return time2;

        return date1;
    }

    public static long sum(long space1, String space2) {
        if (space1 == 0) {
            return Long.parseLong(space2);
        }
        long total2 = Long.parseLong(space2);

        return space1 + total2;
    }

}