| /* |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. |
| * The ASF licenses this file to You 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. |
| */ |
| package org.apache.commons.lang.time; |
| |
| import java.util.ArrayList; |
| import java.util.Calendar; |
| import java.util.Date; |
| import java.util.GregorianCalendar; |
| import java.util.TimeZone; |
| |
| import org.apache.commons.lang.StringUtils; |
| |
| /** |
| * <p>Duration formatting utilities and constants. The following table describes the tokens |
| * used in the pattern language for formatting. </p> |
| * <table border="1"> |
| * <tr><th>character</th><th>duration element</th></tr> |
| * <tr><td>y</td><td>years</td></tr> |
| * <tr><td>M</td><td>months</td></tr> |
| * <tr><td>d</td><td>days</td></tr> |
| * <tr><td>H</td><td>hours</td></tr> |
| * <tr><td>m</td><td>minutes</td></tr> |
| * <tr><td>s</td><td>seconds</td></tr> |
| * <tr><td>S</td><td>milliseconds</td></tr> |
| * </table> |
| * |
| * @author Apache Ant - DateUtils |
| * @author <a href="mailto:sbailliez@apache.org">Stephane Bailliez</a> |
| * @author <a href="mailto:stefan.bodewig@epost.de">Stefan Bodewig</a> |
| * @author Stephen Colebourne |
| * @author <a href="mailto:ggregory@seagullsw.com">Gary Gregory</a> |
| * @since 2.1 |
| * @version $Id$ |
| */ |
| public class DurationFormatUtils { |
| |
| /** |
| * <p>DurationFormatUtils instances should NOT be constructed in standard programming.</p> |
| * |
| * <p>This constructor is public to permit tools that require a JavaBean instance |
| * to operate.</p> |
| */ |
| public DurationFormatUtils() { |
| super(); |
| } |
| |
| /** |
| * <p>Pattern used with <code>FastDateFormat</code> and <code>SimpleDateFormat</code> |
| * for the ISO8601 period format used in durations.</p> |
| * |
| * @see org.apache.commons.lang.time.FastDateFormat |
| * @see java.text.SimpleDateFormat |
| */ |
| public static final String ISO_EXTENDED_FORMAT_PATTERN = "'P'yyyy'Y'M'M'd'DT'H'H'm'M's.S'S'"; |
| |
| //----------------------------------------------------------------------- |
| /** |
| * <p>Formats the time gap as a string.</p> |
| * |
| * <p>The format used is ISO8601-like: |
| * <i>H</i>:<i>m</i>:<i>s</i>.<i>S</i>.</p> |
| * |
| * @param durationMillis the duration to format |
| * @return the time as a String |
| */ |
| public static String formatDurationHMS(long durationMillis) { |
| return formatDuration(durationMillis, "H:mm:ss.SSS"); |
| } |
| |
| /** |
| * <p>Formats the time gap as a string.</p> |
| * |
| * <p>The format used is the ISO8601 period format.</p> |
| * |
| * <p>This method formats durations using the days and lower fields of the |
| * ISO format pattern, such as P7D6TH5M4.321S.</p> |
| * |
| * @param durationMillis the duration to format |
| * @return the time as a String |
| */ |
| public static String formatDurationISO(long durationMillis) { |
| return formatDuration(durationMillis, ISO_EXTENDED_FORMAT_PATTERN, false); |
| } |
| |
| /** |
| * <p>Formats the time gap as a string, using the specified format, and padding with zeros and |
| * using the default timezone.</p> |
| * |
| * <p>This method formats durations using the days and lower fields of the |
| * format pattern. Months and larger are not used.</p> |
| * |
| * @param durationMillis the duration to format |
| * @param format the way in which to format the duration |
| * @return the time as a String |
| */ |
| public static String formatDuration(long durationMillis, String format) { |
| return formatDuration(durationMillis, format, true); |
| } |
| |
| /** |
| * <p>Formats the time gap as a string, using the specified format. |
| * Padding the left hand side of numbers with zeroes is optional and |
| * the timezone may be specified.</p> |
| * |
| * <p>This method formats durations using the days and lower fields of the |
| * format pattern. Months and larger are not used.</p> |
| * |
| * @param durationMillis the duration to format |
| * @param format the way in which to format the duration |
| * @param padWithZeros whether to pad the left hand side of numbers with 0's |
| * @return the time as a String |
| */ |
| public static String formatDuration(long durationMillis, String format, boolean padWithZeros) { |
| |
| Token[] tokens = lexx(format); |
| |
| int days = 0; |
| int hours = 0; |
| int minutes = 0; |
| int seconds = 0; |
| int milliseconds = 0; |
| |
| if (Token.containsTokenWithValue(tokens, d) ) { |
| days = (int) (durationMillis / DateUtils.MILLIS_PER_DAY); |
| durationMillis = durationMillis - (days * DateUtils.MILLIS_PER_DAY); |
| } |
| if (Token.containsTokenWithValue(tokens, H) ) { |
| hours = (int) (durationMillis / DateUtils.MILLIS_PER_HOUR); |
| durationMillis = durationMillis - (hours * DateUtils.MILLIS_PER_HOUR); |
| } |
| if (Token.containsTokenWithValue(tokens, m) ) { |
| minutes = (int) (durationMillis / DateUtils.MILLIS_PER_MINUTE); |
| durationMillis = durationMillis - (minutes * DateUtils.MILLIS_PER_MINUTE); |
| } |
| if (Token.containsTokenWithValue(tokens, s) ) { |
| seconds = (int) (durationMillis / DateUtils.MILLIS_PER_SECOND); |
| durationMillis = durationMillis - (seconds * DateUtils.MILLIS_PER_SECOND); |
| } |
| if (Token.containsTokenWithValue(tokens, S) ) { |
| milliseconds = (int) durationMillis; |
| } |
| |
| return format(tokens, 0, 0, days, hours, minutes, seconds, milliseconds, padWithZeros); |
| } |
| |
| /** |
| * <p>Formats an elapsed time into a plurialization correct string.</p> |
| * |
| * <p>This method formats durations using the days and lower fields of the |
| * format pattern. Months and larger are not used.</p> |
| * |
| * @param durationMillis the elapsed time to report in milliseconds |
| * @param suppressLeadingZeroElements suppresses leading 0 elements |
| * @param suppressTrailingZeroElements suppresses trailing 0 elements |
| * @return the formatted text in days/hours/minutes/seconds |
| */ |
| public static String formatDurationWords( |
| long durationMillis, |
| boolean suppressLeadingZeroElements, |
| boolean suppressTrailingZeroElements) { |
| |
| // This method is generally replacable by the format method, but |
| // there are a series of tweaks and special cases that require |
| // trickery to replicate. |
| String duration = formatDuration(durationMillis, "d' days 'H' hours 'm' minutes 's' seconds'"); |
| if (suppressLeadingZeroElements) { |
| // this is a temporary marker on the front. Like ^ in regexp. |
| duration = " " + duration; |
| String tmp = StringUtils.replaceOnce(duration, " 0 days", ""); |
| if (tmp.length() != duration.length()) { |
| duration = tmp; |
| tmp = StringUtils.replaceOnce(duration, " 0 hours", ""); |
| if (tmp.length() != duration.length()) { |
| duration = tmp; |
| tmp = StringUtils.replaceOnce(duration, " 0 minutes", ""); |
| duration = tmp; |
| if (tmp.length() != duration.length()) { |
| duration = StringUtils.replaceOnce(tmp, " 0 seconds", ""); |
| } |
| } |
| } |
| if (duration.length() != 0) { |
| // strip the space off again |
| duration = duration.substring(1); |
| } |
| } |
| if (suppressTrailingZeroElements) { |
| String tmp = StringUtils.replaceOnce(duration, " 0 seconds", ""); |
| if (tmp.length() != duration.length()) { |
| duration = tmp; |
| tmp = StringUtils.replaceOnce(duration, " 0 minutes", ""); |
| if (tmp.length() != duration.length()) { |
| duration = tmp; |
| tmp = StringUtils.replaceOnce(duration, " 0 hours", ""); |
| if (tmp.length() != duration.length()) { |
| duration = StringUtils.replaceOnce(tmp, " 0 days", ""); |
| } |
| } |
| } |
| } |
| // handle plurals |
| duration = " " + duration; |
| duration = StringUtils.replaceOnce(duration, " 1 seconds", " 1 second"); |
| duration = StringUtils.replaceOnce(duration, " 1 minutes", " 1 minute"); |
| duration = StringUtils.replaceOnce(duration, " 1 hours", " 1 hour"); |
| duration = StringUtils.replaceOnce(duration, " 1 days", " 1 day"); |
| return duration.trim(); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * <p>Formats the time gap as a string.</p> |
| * |
| * <p>The format used is the ISO8601 period format.</p> |
| * |
| * @param startMillis the start of the duration to format |
| * @param endMillis the end of the duration to format |
| * @return the time as a String |
| */ |
| public static String formatPeriodISO(long startMillis, long endMillis) { |
| return formatPeriod(startMillis, endMillis, ISO_EXTENDED_FORMAT_PATTERN, false, TimeZone.getDefault()); |
| } |
| |
| /** |
| * <p>Formats the time gap as a string, using the specified format. |
| * Padding the left hand side of numbers with zeroes is optional. |
| * |
| * @param startMillis the start of the duration |
| * @param endMillis the end of the duration |
| * @param format the way in which to format the duration |
| * @return the time as a String |
| */ |
| public static String formatPeriod(long startMillis, long endMillis, String format) { |
| return formatPeriod(startMillis, endMillis, format, true, TimeZone.getDefault()); |
| } |
| |
| /** |
| * <p>Formats the time gap as a string, using the specified format. |
| * Padding the left hand side of numbers with zeroes is optional and |
| * the timezone may be specified. </p> |
| * |
| * <p>When calculating the difference between months/days, it chooses to |
| * calculate months first. So when working out the number of months and |
| * days between January 15th and March 10th, it choose 1 month and |
| * 23 days gained by choosing January->February = 1 month and then |
| * calculating days forwards, and not the 1 month and 26 days gained by |
| * choosing March -> February = 1 month and then calculating days |
| * backwards. </p> |
| * |
| * <p>For more control, the <a href="http://joda-time.sf.net/">Joda-Time</a> |
| * library is recommended.</p> |
| * |
| * @param startMillis the start of the duration |
| * @param endMillis the end of the duration |
| * @param format the way in which to format the duration |
| * @param padWithZeros whether to pad the left hand side of numbers with 0's |
| * @param timezone the millis are defined in |
| * @return the time as a String |
| */ |
| public static String formatPeriod(long startMillis, long endMillis, String format, boolean padWithZeros, |
| TimeZone timezone) { |
| |
| // Used to optimise for differences under 28 days and |
| // called formatDuration(millis, format); however this did not work |
| // over leap years. |
| // TODO: Compare performance to see if anything was lost by |
| // losing this optimisation. |
| |
| Token[] tokens = lexx(format); |
| |
| // timezones get funky around 0, so normalizing everything to GMT |
| // stops the hours being off |
| Calendar start = Calendar.getInstance(timezone); |
| start.setTime(new Date(startMillis)); |
| Calendar end = Calendar.getInstance(timezone); |
| end.setTime(new Date(endMillis)); |
| |
| // initial estimates |
| int milliseconds = end.get(Calendar.MILLISECOND) - start.get(Calendar.MILLISECOND); |
| int seconds = end.get(Calendar.SECOND) - start.get(Calendar.SECOND); |
| int minutes = end.get(Calendar.MINUTE) - start.get(Calendar.MINUTE); |
| int hours = end.get(Calendar.HOUR_OF_DAY) - start.get(Calendar.HOUR_OF_DAY); |
| int days = end.get(Calendar.DAY_OF_MONTH) - start.get(Calendar.DAY_OF_MONTH); |
| int months = end.get(Calendar.MONTH) - start.get(Calendar.MONTH); |
| int years = end.get(Calendar.YEAR) - start.get(Calendar.YEAR); |
| |
| // each initial estimate is adjusted in case it is under 0 |
| while (milliseconds < 0) { |
| milliseconds += 1000; |
| seconds -= 1; |
| } |
| while (seconds < 0) { |
| seconds += 60; |
| minutes -= 1; |
| } |
| while (minutes < 0) { |
| minutes += 60; |
| hours -= 1; |
| } |
| while (hours < 0) { |
| hours += 24; |
| days -= 1; |
| } |
| |
| if (Token.containsTokenWithValue(tokens, M)) { |
| while (days < 0) { |
| days += start.getActualMaximum(Calendar.DAY_OF_MONTH); |
| months -= 1; |
| start.add(Calendar.MONTH, 1); |
| } |
| |
| while (months < 0) { |
| months += 12; |
| years -= 1; |
| } |
| |
| if (!Token.containsTokenWithValue(tokens, y) && years != 0) { |
| while (years != 0) { |
| months += 12 * years; |
| years = 0; |
| } |
| } |
| } else { |
| // there are no M's in the format string |
| |
| if( !Token.containsTokenWithValue(tokens, y) ) { |
| int target = end.get(Calendar.YEAR); |
| if (months < 0) { |
| // target is end-year -1 |
| target -= 1; |
| } |
| |
| while ( (start.get(Calendar.YEAR) != target)) { |
| days += start.getActualMaximum(Calendar.DAY_OF_YEAR) - start.get(Calendar.DAY_OF_YEAR); |
| |
| // Not sure I grok why this is needed, but the brutal tests show it is |
| if(start instanceof GregorianCalendar) { |
| if( (start.get(Calendar.MONTH) == Calendar.FEBRUARY) && |
| (start.get(Calendar.DAY_OF_MONTH) == 29 ) ) |
| { |
| days += 1; |
| } |
| } |
| |
| start.add(Calendar.YEAR, 1); |
| |
| days += start.get(Calendar.DAY_OF_YEAR); |
| } |
| |
| years = 0; |
| } |
| |
| while( start.get(Calendar.MONTH) != end.get(Calendar.MONTH) ) { |
| days += start.getActualMaximum(Calendar.DAY_OF_MONTH); |
| start.add(Calendar.MONTH, 1); |
| } |
| |
| months = 0; |
| |
| while (days < 0) { |
| days += start.getActualMaximum(Calendar.DAY_OF_MONTH); |
| months -= 1; |
| start.add(Calendar.MONTH, 1); |
| } |
| |
| } |
| |
| // The rest of this code adds in values that |
| // aren't requested. This allows the user to ask for the |
| // number of months and get the real count and not just 0->11. |
| |
| if (!Token.containsTokenWithValue(tokens, d)) { |
| hours += 24 * days; |
| days = 0; |
| } |
| if (!Token.containsTokenWithValue(tokens, H)) { |
| minutes += 60 * hours; |
| hours = 0; |
| } |
| if (!Token.containsTokenWithValue(tokens, m)) { |
| seconds += 60 * minutes; |
| minutes = 0; |
| } |
| if (!Token.containsTokenWithValue(tokens, s)) { |
| milliseconds += 1000 * seconds; |
| seconds = 0; |
| } |
| |
| return format(tokens, years, months, days, hours, minutes, seconds, milliseconds, padWithZeros); |
| } |
| |
| //----------------------------------------------------------------------- |
| /** |
| * <p>The internal method to do the formatting.</p> |
| * |
| * @param tokens the tokens |
| * @param years the number of years |
| * @param months the number of months |
| * @param days the number of days |
| * @param hours the number of hours |
| * @param minutes the number of minutes |
| * @param seconds the number of seconds |
| * @param milliseconds the number of millis |
| * @param padWithZeros whether to pad |
| * @return the formatted string |
| */ |
| static String format(Token[] tokens, int years, int months, int days, int hours, int minutes, int seconds, |
| int milliseconds, boolean padWithZeros) { |
| StringBuffer buffer = new StringBuffer(); |
| boolean lastOutputSeconds = false; |
| int sz = tokens.length; |
| for (int i = 0; i < sz; i++) { |
| Token token = tokens[i]; |
| Object value = token.getValue(); |
| int count = token.getCount(); |
| if (value instanceof StringBuffer) { |
| buffer.append(value.toString()); |
| } else { |
| if (value == y) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(years), count, '0') : Integer |
| .toString(years)); |
| lastOutputSeconds = false; |
| } else if (value == M) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(months), count, '0') : Integer |
| .toString(months)); |
| lastOutputSeconds = false; |
| } else if (value == d) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(days), count, '0') : Integer |
| .toString(days)); |
| lastOutputSeconds = false; |
| } else if (value == H) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(hours), count, '0') : Integer |
| .toString(hours)); |
| lastOutputSeconds = false; |
| } else if (value == m) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(minutes), count, '0') : Integer |
| .toString(minutes)); |
| lastOutputSeconds = false; |
| } else if (value == s) { |
| buffer.append(padWithZeros ? StringUtils.leftPad(Integer.toString(seconds), count, '0') : Integer |
| .toString(seconds)); |
| lastOutputSeconds = true; |
| } else if (value == S) { |
| if (lastOutputSeconds) { |
| milliseconds += 1000; |
| String str = padWithZeros |
| ? StringUtils.leftPad(Integer.toString(milliseconds), count, '0') |
| : Integer.toString(milliseconds); |
| buffer.append(str.substring(1)); |
| } else { |
| buffer.append(padWithZeros |
| ? StringUtils.leftPad(Integer.toString(milliseconds), count, '0') |
| : Integer.toString(milliseconds)); |
| } |
| lastOutputSeconds = false; |
| } |
| } |
| } |
| return buffer.toString(); |
| } |
| |
| static final Object y = "y"; |
| static final Object M = "M"; |
| static final Object d = "d"; |
| static final Object H = "H"; |
| static final Object m = "m"; |
| static final Object s = "s"; |
| static final Object S = "S"; |
| |
| /** |
| * Parses a classic date format string into Tokens |
| * |
| * @param format to parse |
| * @return Token[] of tokens |
| */ |
| static Token[] lexx(String format) { |
| char[] array = format.toCharArray(); |
| ArrayList list = new ArrayList(array.length); |
| |
| boolean inLiteral = false; |
| StringBuffer buffer = null; |
| Token previous = null; |
| int sz = array.length; |
| for(int i=0; i<sz; i++) { |
| char ch = array[i]; |
| if(inLiteral && ch != '\'') { |
| buffer.append(ch); |
| continue; |
| } |
| Object value = null; |
| switch(ch) { |
| // TODO: Need to handle escaping of ' |
| case '\'' : |
| if(inLiteral) { |
| buffer = null; |
| inLiteral = false; |
| } else { |
| buffer = new StringBuffer(); |
| list.add(new Token(buffer)); |
| inLiteral = true; |
| } |
| break; |
| case 'y' : value = y; break; |
| case 'M' : value = M; break; |
| case 'd' : value = d; break; |
| case 'H' : value = H; break; |
| case 'm' : value = m; break; |
| case 's' : value = s; break; |
| case 'S' : value = S; break; |
| default : |
| if(buffer == null) { |
| buffer = new StringBuffer(); |
| list.add(new Token(buffer)); |
| } |
| buffer.append(ch); |
| } |
| |
| if(value != null) { |
| if(previous != null && previous.getValue() == value) { |
| previous.increment(); |
| } else { |
| Token token = new Token(value); |
| list.add(token); |
| previous = token; |
| } |
| buffer = null; |
| } |
| } |
| return (Token[]) list.toArray( new Token[list.size()] ); |
| } |
| |
| /** |
| * Element that is parsed from the format pattern. |
| */ |
| static class Token { |
| |
| /** |
| * Helper method to determine if a set of tokens contain a value |
| * |
| * @param tokens set to look in |
| * @param value to look for |
| * @return boolean <code>true</code> if contained |
| */ |
| static boolean containsTokenWithValue(Token[] tokens, Object value) { |
| int sz = tokens.length; |
| for (int i = 0; i < sz; i++) { |
| if (tokens[i].getValue() == value) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| private Object value; |
| private int count; |
| |
| /** |
| * Wraps a token around a value. A value would be something like a 'Y'. |
| * |
| * @param value to wrap |
| */ |
| Token(Object value) { |
| this.value = value; |
| this.count = 1; |
| } |
| |
| /** |
| * Wraps a token around a repeated number of a value, for example it would |
| * store 'yyyy' as a value for y and a count of 4. |
| * |
| * @param value to wrap |
| * @param count to wrap |
| */ |
| Token(Object value, int count) { |
| this.value = value; |
| this.count = count; |
| } |
| |
| /** |
| * Adds another one of the value |
| */ |
| void increment() { |
| count++; |
| } |
| |
| /** |
| * Gets the current number of values represented |
| * |
| * @return int number of values represented |
| */ |
| int getCount() { |
| return count; |
| } |
| |
| /** |
| * Gets the particular value this token represents. |
| * |
| * @return Object value |
| */ |
| Object getValue() { |
| return value; |
| } |
| |
| /** |
| * Supports equality of this Token to another Token. |
| * |
| * @param obj2 Object to consider equality of |
| * @return boolean <code>true</code> if equal |
| */ |
| public boolean equals(Object obj2) { |
| if (obj2 instanceof Token) { |
| Token tok2 = (Token) obj2; |
| if (this.value.getClass() != tok2.value.getClass()) { |
| return false; |
| } |
| if (this.count != tok2.count) { |
| return false; |
| } |
| if (this.value instanceof StringBuffer) { |
| return this.value.toString().equals(tok2.value.toString()); |
| } else if (this.value instanceof Number) { |
| return this.value.equals(tok2.value); |
| } else { |
| return this.value == tok2.value; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Returns a hashcode for the token equal to the |
| * hashcode for the token's value. Thus 'TT' and 'TTTT' |
| * will have the same hashcode. |
| * |
| * @return The hashcode for the token |
| */ |
| public int hashCode() { |
| return this.value.hashCode(); |
| } |
| |
| /** |
| * Represents this token as a String. |
| * |
| * @return String representation of the token |
| */ |
| public String toString() { |
| return StringUtils.repeat(this.value.toString(), this.count); |
| } |
| } |
| |
| } |
