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-rw-r--r--libjava/java/text/SimpleDateFormat.java528
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diff --git a/libjava/java/text/SimpleDateFormat.java b/libjava/java/text/SimpleDateFormat.java
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--- a/libjava/java/text/SimpleDateFormat.java
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-/* Copyright (C) 1998, 1999, 2000 Free Software Foundation
-
- 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.text;
-
-import java.util.*;
-
-/**
- * @author Per Bothner <bothner@cygnus.com>
- * @date October 25, 1998.
- */
-/* Written using "Java Class Libraries", 2nd edition, plus online
- * API docs for JDK 1.2 beta from http://www.javasoft.com.
- * Status: parse is not implemented.
- */
-
-public class SimpleDateFormat extends DateFormat
-{
- private Date defaultCenturyStart;
- private DateFormatSymbols formatData;
- private String pattern;
-
- public SimpleDateFormat ()
- {
- this("dd/MM/yy HH:mm", Locale.getDefault());
- }
-
- public SimpleDateFormat (String pattern)
- {
- this(pattern, Locale.getDefault());
- }
-
- public SimpleDateFormat (String pattern, Locale locale)
- {
- this.pattern = pattern;
- this.calendar = Calendar.getInstance(locale);
- this.numberFormat = NumberFormat.getInstance(locale);
- numberFormat.setGroupingUsed(false);
- this.formatData = new DateFormatSymbols (locale);
- }
-
- public SimpleDateFormat (String pattern, DateFormatSymbols formatData)
- {
- this.pattern = pattern;
- this.formatData = formatData;
- this.calendar = Calendar.getInstance();
- this.numberFormat = NumberFormat.getInstance();
- numberFormat.setGroupingUsed(false);
- }
-
- public Date get2DigitYearStart()
- {
- return defaultCenturyStart;
- }
-
- public void set2DigitYearStart(Date startDate)
- {
- defaultCenturyStart = startDate;
- }
-
- public DateFormatSymbols getDateFormatSymbols ()
- {
- return formatData;
- }
-
- public void setDateFormatSymbols (DateFormatSymbols value)
- {
- formatData = value;
- }
-
- public String toPattern ()
- {
- return pattern;
- }
-
- public void applyPattern (String pattern)
- {
- this.pattern = pattern;
- }
-
- private String applyLocalizedPattern (String pattern,
- String oldChars, String newChars)
- {
- int len = pattern.length();
- StringBuffer buf = new StringBuffer(len);
- boolean quoted = false;
- for (int i = 0; i < len; i++)
- {
- char ch = pattern.charAt(i);
- if (ch == '\'')
- quoted = ! quoted;
- if (! quoted)
- {
- int j = oldChars.indexOf(ch);
- if (j >= 0)
- ch = newChars.charAt(j);
- }
- buf.append(ch);
- }
- return buf.toString();
- }
-
- public void applyLocalizedPattern (String pattern)
- {
- String localChars = formatData.getLocalPatternChars();
- String standardChars = DateFormatSymbols.localPatternCharsDefault;
- pattern = applyLocalizedPattern (pattern, localChars, standardChars);
- applyPattern(pattern);
- }
-
- public String toLocalizedPattern ()
- {
- String localChars = formatData.getLocalPatternChars();
- String standardChars = DateFormatSymbols.localPatternCharsDefault;
- return applyLocalizedPattern (pattern, standardChars, localChars);
- }
-
- private final void append (StringBuffer buf, int value, int numDigits)
- {
- numberFormat.setMinimumIntegerDigits(numDigits);
- numberFormat.format(value, buf, null);
- }
-
- public StringBuffer format (Date date, StringBuffer buf, FieldPosition pos)
- {
- Calendar calendar = (Calendar) this.calendar.clone();
- calendar.setTime(date);
- int len = pattern.length();
- int quoteStart = -1;
- for (int i = 0; i < len; i++)
- {
- char ch = pattern.charAt(i);
- if (ch == '\'')
- {
- // We must do a little lookahead to see if we have two
- // single quotes embedded in quoted text.
- if (i < len - 1 && pattern.charAt(i + 1) == '\'')
- {
- ++i;
- buf.append(ch);
- }
- else
- quoteStart = quoteStart < 0 ? i : -1;
- }
- // From JCL: any characters in the pattern that are not in
- // the ranges of [a..z] and [A..Z] are treated as quoted
- // text.
- else if (quoteStart != -1
- || ((ch < 'a' || ch > 'z')
- && (ch < 'A' || ch > 'Z')))
- buf.append(ch);
- else
- {
- int first = i;
- int value;
- while (++i < len && pattern.charAt(i) == ch) ;
- int count = i - first; // Number of repetions of ch in pattern.
- int beginIndex = buf.length();
- int field;
- i--; // Skip all but last instance of ch in pattern.
- switch (ch)
- {
- case 'd':
- append(buf, calendar.get(Calendar.DATE), count);
- field = DateFormat.DATE_FIELD;
- break;
- case 'D':
- append(buf, calendar.get(Calendar.DAY_OF_YEAR), count);
- field = DateFormat.DAY_OF_YEAR_FIELD;
- break;
- case 'F':
- append(buf, calendar.get(Calendar.DAY_OF_WEEK_IN_MONTH),count);
- field = DateFormat.DAY_OF_WEEK_IN_MONTH_FIELD;
- break;
- case 'E':
- value = calendar.get(calendar.DAY_OF_WEEK);
- buf.append(count <= 3 ? formatData.getShortWeekdays()[value]
- : formatData.getWeekdays()[value]);
- field = DateFormat.DAY_OF_WEEK_FIELD;
- break;
- case 'w':
- append(buf, calendar.get(Calendar.WEEK_OF_YEAR), count);
- field = DateFormat.WEEK_OF_YEAR_FIELD;
- break;
- case 'W':
- append(buf, calendar.get(Calendar.WEEK_OF_MONTH), count);
- field = DateFormat.WEEK_OF_MONTH_FIELD;
- break;
- case 'M':
- value = calendar.get(Calendar.MONTH);
- if (count <= 2)
- append(buf, value + 1, count);
- else
- buf.append(count <= 3 ? formatData.getShortMonths()[value]
- : formatData.getMonths()[value]);
- field = DateFormat.MONTH_FIELD;
- break;
- case 'y':
- value = calendar.get(Calendar.YEAR);
- append(buf, count <= 2 ? value % 100 : value, count);
- field = DateFormat.YEAR_FIELD;
- break;
- case 'K':
- append(buf, calendar.get(Calendar.HOUR), count);
- field = DateFormat.HOUR0_FIELD;
- break;
- case 'h':
- value = ((calendar.get(Calendar.HOUR) + 11) % 12) + 1;
- append(buf, value, count);
- field = DateFormat.HOUR1_FIELD;
- break;
- case 'H':
- append(buf, calendar.get(Calendar.HOUR_OF_DAY), count);
- field = DateFormat.HOUR_OF_DAY0_FIELD;
- break;
- case 'k':
- value = ((calendar.get(Calendar.HOUR_OF_DAY) + 23) % 24) + 1;
- append(buf, value, count);
- field = DateFormat.HOUR_OF_DAY1_FIELD;
- break;
- case 'm':
- append(buf, calendar.get(Calendar.MINUTE), count);
- field = DateFormat.MINUTE_FIELD;
- break;
- case 's':
- append(buf, calendar.get(Calendar.SECOND), count);
- field = DateFormat.SECOND_FIELD;
- break;
- case 'S':
- append(buf, calendar.get(Calendar.MILLISECOND), count);
- field = DateFormat.MILLISECOND_FIELD;
- break;
- case 'a':
- value = calendar.get(calendar.AM_PM);
- buf.append(formatData.getAmPmStrings()[value]);
- field = DateFormat.AM_PM_FIELD;
- break;
- case 'z':
- String zoneID = calendar.getTimeZone().getID();
- String[][] zoneStrings = formatData.getZoneStrings();
- int zoneCount = zoneStrings.length;
- for (int j = 0; j < zoneCount; j++)
- {
- String[] strings = zoneStrings[j];
- if (zoneID.equals(strings[0]))
- {
- j = count > 3 ? 2 : 1;
- if (calendar.get(Calendar.DST_OFFSET) != 0)
- j+=2;
- zoneID = strings[j];
- break;
- }
- }
- buf.append(zoneID);
- field = DateFormat.TIMEZONE_FIELD;
- break;
- default:
- // Note that the JCL is actually somewhat
- // contradictory here. It defines the pattern letters
- // to be a particular list, but also says that a
- // pattern containing an invalid pattern letter must
- // throw an exception. It doesn't describe what an
- // invalid pattern letter might be, so we just assume
- // it is any letter in [a-zA-Z] not explicitly covered
- // above.
- throw new RuntimeException("bad format string");
- }
- if (pos != null && field == pos.getField())
- {
- pos.setBeginIndex(beginIndex);
- pos.setEndIndex(buf.length());
- }
- }
- }
- return buf;
- }
-
- private final boolean expect (String source, ParsePosition pos,
- char ch)
- {
- int x = pos.getIndex();
- boolean r = x < source.length() && source.charAt(x) == ch;
- if (r)
- pos.setIndex(x + 1);
- else
- pos.setErrorIndex(x);
- return r;
- }
-
- public Date parse (String source, ParsePosition pos)
- {
- int fmt_index = 0;
- int fmt_max = pattern.length();
-
- calendar.clear();
- int quote_start = -1;
- for (; fmt_index < fmt_max; ++fmt_index)
- {
- char ch = pattern.charAt(fmt_index);
- if (ch == '\'')
- {
- int index = pos.getIndex();
- if (fmt_index < fmt_max - 1
- && pattern.charAt(fmt_index + 1) == '\'')
- {
- if (! expect (source, pos, ch))
- return null;
- ++fmt_index;
- }
- else
- quote_start = quote_start < 0 ? fmt_index : -1;
- continue;
- }
-
- if (quote_start != -1
- || ((ch < 'a' || ch > 'z')
- && (ch < 'A' || ch > 'Z')))
- {
- if (! expect (source, pos, ch))
- return null;
- continue;
- }
-
- // We've arrived at a potential pattern character in the
- // pattern.
- int first = fmt_index;
- while (++fmt_index < fmt_max && pattern.charAt(fmt_index) == ch)
- ;
- int count = fmt_index - first;
- --fmt_index;
-
- // We can handle most fields automatically: most either are
- // numeric or are looked up in a string vector. In some cases
- // we need an offset. When numeric, `offset' is added to the
- // resulting value. When doing a string lookup, offset is the
- // initial index into the string array.
- int calendar_field;
- boolean is_numeric = true;
- String[] match = null;
- int offset = 0;
- int zone_number = 0;
- switch (ch)
- {
- case 'd':
- calendar_field = Calendar.DATE;
- break;
- case 'D':
- calendar_field = Calendar.DAY_OF_YEAR;
- break;
- case 'F':
- calendar_field = Calendar.DAY_OF_WEEK_IN_MONTH;
- break;
- case 'E':
- is_numeric = false;
- offset = 1;
- calendar_field = Calendar.DAY_OF_WEEK;
- match = (count <= 3
- ? formatData.getShortWeekdays()
- : formatData.getWeekdays());
- break;
- case 'w':
- calendar_field = Calendar.WEEK_OF_YEAR;
- break;
- case 'W':
- calendar_field = Calendar.WEEK_OF_MONTH;
- break;
- case 'M':
- calendar_field = Calendar.MONTH;
- if (count <= 2)
- ;
- else
- {
- is_numeric = false;
- match = (count <= 3
- ? formatData.getShortMonths()
- : formatData.getMonths());
- }
- break;
- case 'y':
- calendar_field = Calendar.YEAR;
- if (count <= 2)
- offset = 1900;
- break;
- case 'K':
- calendar_field = Calendar.HOUR;
- break;
- case 'h':
- calendar_field = Calendar.HOUR;
- offset = -1;
- break;
- case 'H':
- calendar_field = Calendar.HOUR_OF_DAY;
- break;
- case 'k':
- calendar_field = Calendar.HOUR_OF_DAY;
- offset = -1;
- break;
- case 'm':
- calendar_field = Calendar.MINUTE;
- break;
- case 's':
- calendar_field = Calendar.SECOND;
- break;
- case 'S':
- calendar_field = Calendar.MILLISECOND;
- break;
- case 'a':
- is_numeric = false;
- calendar_field = Calendar.AM_PM;
- match = formatData.getAmPmStrings();
- break;
- case 'z':
- // We need a special case for the timezone, because it
- // uses a different data structure than the other cases.
- is_numeric = false;
- calendar_field = Calendar.DST_OFFSET;
- String[][] zoneStrings = formatData.getZoneStrings();
- int zoneCount = zoneStrings.length;
- int index = pos.getIndex();
- boolean found_zone = false;
- for (int j = 0; j < zoneCount; j++)
- {
- String[] strings = zoneStrings[j];
- int k;
- for (k = 1; k < strings.length; ++k)
- {
- if (source.startsWith(strings[k], index))
- break;
- }
- if (k != strings.length)
- {
- if (k > 2)
- ; // FIXME: dst.
- zone_number = 0; // FIXME: dst.
- // FIXME: raw offset to SimpleTimeZone const.
- calendar.setTimeZone(new SimpleTimeZone (1, strings[0]));
- pos.setIndex(index + strings[k].length());
- break;
- }
- }
- if (! found_zone)
- {
- pos.setErrorIndex(pos.getIndex());
- return null;
- }
- break;
- default:
- pos.setErrorIndex(pos.getIndex());
- return null;
- }
-
- // Compute the value we should assign to the field.
- int value;
- if (is_numeric)
- {
- numberFormat.setMinimumIntegerDigits(count);
- Number n = numberFormat.parse(source, pos);
- if (pos == null || ! (n instanceof Long))
- return null;
- value = n.intValue() + offset;
- }
- else if (match != null)
- {
- int index = pos.getIndex();
- int i;
- for (i = offset; i < match.length; ++i)
- {
- if (source.startsWith(match[i], index))
- break;
- }
- if (i == match.length)
- {
- pos.setErrorIndex(index);
- return null;
- }
- pos.setIndex(index + match[i].length());
- value = i;
- }
- else
- value = zone_number;
-
- // Assign the value and move on.
- try
- {
- calendar.set(calendar_field, value);
- }
- // FIXME: what exception is thrown on an invalid
- // non-lenient set?
- catch (IllegalArgumentException x)
- {
- pos.setErrorIndex(pos.getIndex());
- return null;
- }
- }
-
- return calendar.getTime();
- }
-
- public boolean equals (Object obj)
- {
- if (! (obj instanceof SimpleDateFormat) || ! super.equals(obj) )
- return false;
- SimpleDateFormat other = (SimpleDateFormat) obj;
- return (DateFormatSymbols.equals(pattern, other.pattern)
- && DateFormatSymbols.equals(formatData, other.formatData)
- && DateFormatSymbols.equals(defaultCenturyStart,
- other.defaultCenturyStart));
- }
-
- public Object clone ()
- {
- // We know the superclass just call's Object's generic cloner.
- return super.clone ();
- }
-
- public int hashCode ()
- {
- int hash = super.hashCode();
- if (pattern != null)
- hash ^= pattern.hashCode();
- return hash;
- }
-}
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