Initial revision

From-SVN: r26263
1999-04-07 14:42:40 +00:00 · 1999-04-07 14:42:40 +00:00 · ee9dd3721b
commit ee9dd3721b
parent 140fa895c6
370 changed files with 173494 additions and 0 deletions
--- a/libjava/java/util/SimpleTimeZone.java
+++ b/libjava/java/util/SimpleTimeZone.java
@ -0,0 +1,182 @@
+/* Copyright (C) 1998, 1999  Cygnus Solutions
+
+   This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License.  Please consult the file "LIBGCJ_LICENSE" for
+details.  */
+
+package java.util;
+
+/**
+ * @author Per Bothner <bothner@cygnus.com>
+ * @date October 24, 1998.
+ */
+
+/* Written using "Java Class Libraries", 2nd edition, ISBN 0-201-31002-3.
+ * Status:  Does not know how to figure out if daylight savings time
+ *   is in effect;  hence only correct for zones without DST.
+ *   No known spec for hashCode.
+ */
+
+public class SimpleTimeZone extends TimeZone
+{
+  // The fields are as specified in Sun's "Serialized Form"
+  // in the JDK 1.2 beta 4 API specification.
+
+  int dstSavings = 60 * 60 * 1000;
+
+  int rawOffset;
+
+  // int serialVersionOnStream;
+
+  int startDay;
+  int startDayOfWeek;
+  int startMode;  /// Seems to be JDK 1.2 only.
+
+  int startMonth;
+
+  int startTime;
+
+  int startYear;
+
+  int endDay;
+
+  int endDayOfWeek;
+
+  int endMode;  // Seems to be JDK 1.2 only.
+
+  int endMonth;
+
+  int endTime;
+
+  // byte[] monthLength;
+
+  boolean useDaylight;
+
+  public SimpleTimeZone (int rawOffset, String ID)
+  {
+    setID(ID);
+    this.rawOffset = rawOffset;
+  }
+
+  public SimpleTimeZone (int rawOffset, String ID,
+			 int startMonth, int startDay,
+			 int startDayOfWeek, int startTime,
+			 int endMonth, int endDay,
+			 int endDayOfWeek, int endTime)
+  {
+    this(rawOffset, ID);
+    setStartRule (startMonth, startDay, startDayOfWeek, startTime);
+    setEndRule (endMonth, endDay, endDayOfWeek, endTime);
+  }
+
+  public int getRawOffset() { return rawOffset; }
+  public void setRawOffset (int offsetMillis) { rawOffset = offsetMillis; }
+
+  public int getOffset (int era, int year, int month, int day,
+			int dayOfWeek, int millis)
+  {
+    int offset = getRawOffset();
+    if (useDaylight)
+      {
+	if (startYear != 0
+	    && (year < startYear || era == GregorianCalendar.BC))
+	  return offset;
+	boolean midYearSummer = startMonth < endMonth;
+	if (midYearSummer ? (month < startMonth || month > endMonth)
+	    : (month < startMonth && month > endMonth))
+	  return offset; // Definitely not DST.
+	if (midYearSummer ? (month > startMonth && month < endMonth)
+	    : (month > startMonth || month < endMonth))
+	  return offset + dstSavings;  // Definitely DST.
+	// Now it gets more complicated.  Bail for now.
+	throw new Error("not implemented - SimpleTimeZone.getOffset");
+      }
+    return offset;
+  }
+
+  public boolean useDaylightTime() { return useDaylight; }
+
+  public boolean inDaylightTime(Date date)
+  {
+    if (! useDaylight)
+      return false;
+    throw new Error("not implemented - SimpleTimeZone.inDaylightTime");
+  }
+
+  public int getDSTSavings () { return dstSavings; }
+
+  public void setDSTSavings (int millisSavedDuringDST)
+  { dstSavings = millisSavedDuringDST; }
+
+  public void setStartRule (int month, int dayOfWeekInMonth,
+			    int dayOfWeek, int time)
+  {
+    this.startMonth = month;
+    this.startDay = dayOfWeekInMonth;
+    this.startDayOfWeek = dayOfWeek;
+    this.startTime = time;
+    this.useDaylight = true;
+  }
+
+  public void setEndRule (int month, int dayOfWeekInMonth,
+			    int dayOfWeek, int time)
+  {
+    this.endMonth = month;
+    this.endDay = dayOfWeekInMonth;
+    this.endDayOfWeek = dayOfWeek;
+    this.endTime = time;
+    this.useDaylight = true;
+  }
+
+  public void setStartYear (int year)
+  {
+    this.startYear = startYear;
+  }
+
+  public boolean hasSameRules (TimeZone other)
+  {
+    if (this == other)
+      return true;
+    if (! (other instanceof SimpleTimeZone))
+      return false;
+    SimpleTimeZone o = (SimpleTimeZone) other;
+    if (rawOffset != o.rawOffset)
+      return false;
+    if (useDaylight != o.useDaylight)
+      return false;
+    if (! useDaylight)
+      return true;
+    return startDay == o.startDay
+      && startDayOfWeek == o.startDayOfWeek
+      && startMonth == o.startMonth
+      && startTime == o.startTime
+      && endDay == o.endDay
+      && endDayOfWeek == o.endDayOfWeek
+      && endMonth == o.endMonth
+      && endTime == o.endTime
+      && startYear == o.startYear
+      && startMode == o.startMode
+      && endMode == o.endMode;
+  }
+
+  public boolean equals (Object obj)
+  {
+    if (! (obj instanceof SimpleTimeZone))
+      return false;
+    SimpleTimeZone other = (SimpleTimeZone) obj;
+    return getID() == other.getID() && hasSameRules(other);
+  }
+
+  public int hashCode ()
+  {
+    // FIXME - this does not folow any spec (since none is public)!
+    int hash = rawOffset;
+    if (useDaylight)
+      hash += dstSavings + startYear + startMode + endMode
+	+ startDay + startDayOfWeek + startMonth + startTime
+	+ endDay + endDayOfWeek + endMonth + endTime;
+    return hash;
+  }
+}