jars/icu4j-4_2_1-src/src/com/ibm/icu/impl/duration/BasicDurationFormat.java

   1 //##header\r
   2 /*\r
   3  *******************************************************************************\r
   4  * Copyright (C) 2007-2009, International Business Machines Corporation and    *\r
   5  * others. All Rights Reserved.                                                *\r
   6  *******************************************************************************\r
   7  */\r
   8 package com.ibm.icu.impl.duration;\r
   9 \r
  10 import java.text.FieldPosition;\r
  11 import java.util.Date;\r
  12 \r
  13 import com.ibm.icu.text.DurationFormat;\r
  14 import com.ibm.icu.util.ULocale;\r
  15 \r
  16 /**\r
  17  * @author srl\r
  18  */\r
  19 public class BasicDurationFormat extends DurationFormat {\r
  20     \r
  21     /**\r
  22      * \r
  23      */\r
  24     private static final long serialVersionUID = -3146984141909457700L;\r
  25     \r
  26     transient DurationFormatter formatter;\r
  27     transient PeriodFormatter pformatter;\r
  28     transient PeriodFormatterService pfs = null;\r
  29 \r
  30     public static DurationFormat getInstance(ULocale locale) {\r
  31         return new BasicDurationFormat(locale);\r
  32     }\r
  33 \r
  34 //#if defined(FOUNDATION10) || defined(J2SE13) || defined(J2SE14)\r
  35 //#else\r
  36     private static boolean checkXMLDuration = true; \r
  37 //#endif\r
  38 \r
  39     public StringBuffer format(Object object, StringBuffer toAppend, FieldPosition pos) {\r
  40         if(object instanceof Long) {\r
  41             String res = formatDurationFromNow(((Long)object).longValue());\r
  42             return toAppend.append(res);\r
  43         } else if(object instanceof Date) {\r
  44             String res = formatDurationFromNowTo(((Date)object));\r
  45             return toAppend.append(res);\r
  46         }\r
  47 //#if defined(FOUNDATION10) || defined(J2SE13) || defined(J2SE14)\r
  48 //#else\r
  49         if(checkXMLDuration) try {\r
  50             if(object instanceof javax.xml.datatype.Duration) {\r
  51                 String res = formatDuration(object);\r
  52                 return toAppend.append(res);\r
  53             }\r
  54         } catch ( NoClassDefFoundError ncdfe ) {\r
  55             System.err.println("Skipping XML capability");\r
  56             checkXMLDuration = false; // don't try again\r
  57         }\r
  58 //#endif\r
  59         throw new IllegalArgumentException("Cannot format given Object as a Duration");\r
  60 \r
  61     }\r
  62     \r
  63     public BasicDurationFormat() {\r
  64         pfs = BasicPeriodFormatterService.getInstance();\r
  65         formatter = pfs.newDurationFormatterFactory().getFormatter();\r
  66         pformatter = pfs.newPeriodFormatterFactory().setDisplayPastFuture(false).getFormatter();\r
  67     }\r
  68     /**\r
  69      * \r
  70      */\r
  71     public BasicDurationFormat(ULocale locale) {\r
  72         super(locale);\r
  73         pfs = BasicPeriodFormatterService.getInstance();\r
  74         formatter = pfs.newDurationFormatterFactory().setLocale(locale.getName()).getFormatter();\r
  75         pformatter = pfs.newPeriodFormatterFactory().setDisplayPastFuture(false).setLocale(locale.getName()).getFormatter();\r
  76     }\r
  77 \r
  78     /* (non-Javadoc)\r
  79      * @see com.ibm.icu.text.DurationFormat#formatDurationFrom(long, long)\r
  80      */\r
  81     public String formatDurationFrom(long duration, long referenceDate) {\r
  82         return formatter.formatDurationFrom(duration, referenceDate);\r
  83     }\r
  84 \r
  85     /* (non-Javadoc)\r
  86      * @see com.ibm.icu.text.DurationFormat#formatDurationFromNow(long)\r
  87      */\r
  88     public String formatDurationFromNow(long duration) {\r
  89         return formatter.formatDurationFromNow(duration);\r
  90     }\r
  91 \r
  92     /* (non-Javadoc)\r
  93      * @see com.ibm.icu.text.DurationFormat#formatDurationFromNowTo(java.util.Date)\r
  94      */\r
  95     public String formatDurationFromNowTo(Date targetDate) {\r
  96         return formatter.formatDurationFromNowTo(targetDate);\r
  97     }\r
  98 \r
  99 //#if defined(FOUNDATION10) || defined(J2SE13) || defined(J2SE14)\r
 100 //#else\r
 101     /** \r
 102      *  JDK 1.5+ only\r
 103      * @param o\r
 104      * @return\r
 105      * @see http://java.sun.com/j2se/1.5.0/docs/api/javax/xml/datatype/Duration.html\r
 106      */\r
 107     public String formatDuration(Object obj) {\r
 108         javax.xml.datatype.DatatypeConstants.Field inFields[] = { \r
 109                 javax.xml.datatype.DatatypeConstants.YEARS,\r
 110                 javax.xml.datatype.DatatypeConstants.MONTHS,\r
 111                 javax.xml.datatype.DatatypeConstants.DAYS,\r
 112                 javax.xml.datatype.DatatypeConstants.HOURS,\r
 113                 javax.xml.datatype.DatatypeConstants.MINUTES,\r
 114                 javax.xml.datatype.DatatypeConstants.SECONDS,\r
 115             };\r
 116              TimeUnit outFields[] = { \r
 117                 TimeUnit.YEAR,\r
 118                 TimeUnit.MONTH,\r
 119                 TimeUnit.DAY,\r
 120                 TimeUnit.HOUR,\r
 121                 TimeUnit.MINUTE,\r
 122                 TimeUnit.SECOND,\r
 123             };\r
 124 \r
 125         javax.xml.datatype.Duration inDuration = (javax.xml.datatype.Duration)obj;\r
 126         Period p = null;\r
 127         javax.xml.datatype.Duration duration = inDuration;\r
 128         boolean inPast = false;\r
 129         if(inDuration.getSign()<0) {\r
 130             duration = inDuration.negate();\r
 131             inPast = true;\r
 132         }\r
 133         // convert a Duration to a Period\r
 134         boolean sawNonZero = false; // did we have a set, non-zero field?\r
 135         for(int i=0;i<inFields.length;i++) {\r
 136             if(duration.isSet(inFields[i])) {\r
 137                 Number n = duration.getField(inFields[i]);\r
 138                 if(n.intValue() == 0 && !sawNonZero) {\r
 139                     continue; // ignore zero fields larger than the largest nonzero field\r
 140                 } else {\r
 141                     sawNonZero = true;\r
 142                 }\r
 143                 float floatVal = n.floatValue();\r
 144                 // is there a 'secondary' unit to set?\r
 145                 TimeUnit alternateUnit = null;\r
 146                 float alternateVal = 0;\r
 147                 \r
 148                 // see if there is a fractional part\r
 149                 if(outFields[i]==TimeUnit.SECOND) {\r
 150                     double fullSeconds = floatVal;\r
 151                     double intSeconds = Math.floor(floatVal);\r
 152                     double millis = (fullSeconds-intSeconds)*1000.0;\r
 153                     if(millis > 0.0) {\r
 154                         alternateUnit = TimeUnit.MILLISECOND;\r
 155                         alternateVal=(float)millis;\r
 156                         floatVal=(float)intSeconds;\r
 157                     }\r
 158                 }\r
 159                 \r
 160                 if(p == null) {\r
 161                     p = Period.at(floatVal, outFields[i]);\r
 162                 } else {\r
 163                     p = p.and(floatVal, outFields[i]);\r
 164                 }\r
 165                 \r
 166                 if(alternateUnit != null) {\r
 167                     p = p.and(alternateVal, alternateUnit); // add in MILLISECONDs\r
 168                 }\r
 169             }\r
 170         }\r
 171         \r
 172         if(p == null) {\r
 173             // no fields set  = 0 seconds\r
 174             return formatDurationFromNow(0);\r
 175         } else {\r
 176             if(inPast) {// was negated, above.\r
 177                 p = p.inPast();\r
 178             } else {\r
 179                 p = p.inFuture();\r
 180             }\r
 181         }\r
 182         \r
 183         // now, format it.\r
 184         return pformatter.format(p);\r
 185     }\r
 186 //#endif\r
 187 }\r