/** formats time zone specifier. */
private static void formatTimeZone(Calendar cal, StringBuilder buf) {
TimeZone tz = cal.getTimeZone();
if (tz == null) return;
// otherwise print out normally.
int offset;
if (tz.inDaylightTime(cal.getTime())) {
offset = tz.getRawOffset() + (tz.useDaylightTime() ? 3600000 : 0);
} else {
offset = tz.getRawOffset();
}
if (offset == 0) {
buf.append('Z');
return;
}
if (offset >= 0) buf.append('+');
else {
buf.append('-');
offset *= -1;
}
offset /= 60 * 1000; // offset is in milli-seconds
formatTwoDigits(offset / 60, buf);
buf.append(':');
formatTwoDigits(offset % 60, buf);
}
// @Ignore
@Test
public void allTimeZoneTest() {
String[] tzIds = TimeZone.getAvailableIDs();
System.out.printf(
"NUM) %32s, %5s \t,%15s\t,%15s,%6s\n",
"Time Zone", "inDST", "offset", "DSTSavings", "useDST");
for (int i = 0; i < tzIds.length; i++) {
String string = tzIds[i];
TimeZone timezone = TimeZone.getTimeZone(string);
Date date = new Date();
// System.out.println(i + ") " + timezone.getID() + ", offset " +
// timezone.getOffset(date.getTime()) + ", DSTSavings " +
// timezone.getDSTSavings());
System.out.printf(
"%3d) %32s, %5s \t,%15d\t,%15d,%6s\n",
i,
timezone.getID(),
timezone.inDaylightTime(date),
timezone.getOffset(date.getTime()),
timezone.getDSTSavings(),
timezone.useDaylightTime());
}
assertTrue(true);
}
/**
* Sanity test for time zone generation. Most important, make sure that we can run through all of
* the time zones without generating an exception. Second, make sure that we're finding rules for
* at least 90% of time zones that use daylight time (empirically, it's more like 95%). Log those
* without rules.
*
* @throws IOException
*/
public void testTimeZoneToVTimezone() throws IOException {
SimpleIcsWriter writer = new SimpleIcsWriter();
int rule = 0;
int nodst = 0;
int norule = 0;
ArrayList<String> norulelist = new ArrayList<String>();
for (String tzs : TimeZone.getAvailableIDs()) {
TimeZone tz = TimeZone.getTimeZone(tzs);
writer = new SimpleIcsWriter();
CalendarUtilities.timeZoneToVTimezone(tz, writer);
String vc = writer.toString();
boolean hasRule = vc.indexOf("RRULE") > 0;
if (hasRule) {
rule++;
} else if (tz.useDaylightTime()) {
norule++;
norulelist.add(tz.getID());
} else {
nodst++;
}
}
assertTrue(norule < rule / 10);
Log.d("TimeZoneGeneration", "Rule: " + rule + ", No DST: " + nodst + ", No rule: " + norule);
for (String nr : norulelist) {
Log.d("TimeZoneGeneration", "No rule: " + nr);
}
}
/**
* Convert the Java timezone ID to the "formatted" string that can be accepted by the C/C++ code.
* Example: "America/New_York" converted to "EST5EDT", etc
*
* @param timezoneID
* @return
*/
public static String convertTimeZone(String timezoneID) {
String result = "";
TimeZone zone = TimeZone.getTimeZone(timezoneID);
int offset = zone.getRawOffset() / 1000;
int hour = offset / 3600;
int min = (offset % 3600) / 60;
DateFormat dfm = new SimpleDateFormat("z");
dfm.setTimeZone(zone);
boolean hasDaylight = zone.useDaylightTime();
String first =
dfm.format(new GregorianCalendar(2010, 1, 1).getTime())
.substring(0, 3); // make it only 3 letters code
String second =
dfm.format(new GregorianCalendar(2011, 6, 6).getTime())
.substring(0, 3); // make it only 3 letters code
int mid = hour * -1;
result = first + Integer.toString(mid);
if (min != 0) {
result = result + ":" + Integer.toString(min);
}
if (hasDaylight) {
result = result + second;
}
return result;
}
/**
* Construct a Strategy that parses a TimeZone
*
* @param locale The Locale
*/
TimeZoneStrategy(final Locale locale) {
final String[][] zones = DateFormatSymbols.getInstance(locale).getZoneStrings();
for (String[] zone : zones) {
if (zone[ID].startsWith("GMT")) {
continue;
}
final TimeZone tz = TimeZone.getTimeZone(zone[ID]);
if (!tzNames.containsKey(zone[LONG_STD])) {
tzNames.put(zone[LONG_STD], tz);
}
if (!tzNames.containsKey(zone[SHORT_STD])) {
tzNames.put(zone[SHORT_STD], tz);
}
if (tz.useDaylightTime()) {
if (!tzNames.containsKey(zone[LONG_DST])) {
tzNames.put(zone[LONG_DST], tz);
}
if (!tzNames.containsKey(zone[SHORT_DST])) {
tzNames.put(zone[SHORT_DST], tz);
}
}
}
final StringBuilder sb = new StringBuilder();
sb.append("(GMT[+\\-]\\d{0,1}\\d{2}|[+\\-]\\d{2}:?\\d{2}|");
for (final String id : tzNames.keySet()) {
escapeRegex(sb, id, false).append('|');
}
sb.setCharAt(sb.length() - 1, ')');
validTimeZoneChars = sb.toString();
}
public TimeZoneRow(String id, String name) {
mId = id;
TimeZone tz = TimeZone.getTimeZone(id);
boolean useDaylightTime = tz.useDaylightTime();
mOffset = tz.getOffset(mTime);
mDisplayName = buildGmtDisplayName(name, useDaylightTime);
}
/**
* Get the DST offset (if any) for the default locale and the given date.
*
* @param self a Date
* @return the DST offset as a Duration.
*/
public static Duration getDaylightSavingsOffset(Date self) {
TimeZone timeZone = getTimeZone(self);
int millis =
(timeZone.useDaylightTime() && timeZone.inDaylightTime(self))
? timeZone.getDSTSavings()
: 0;
return new TimeDuration(0, 0, 0, millis);
}
/** {@inheritDoc} */
@Override
public void appendTo(StringBuffer buffer, Calendar calendar) {
if (mTimeZone.useDaylightTime() && calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(mDaylight);
} else {
buffer.append(mStandard);
}
}
public String toSubtitle() {
String result = "UTC" + Utils.offsetString(timeZone.getRawOffset(), true, false);
if (timeZone.useDaylightTime()) {
result += " / DST " + Utils.offsetString(timeZone.getDSTSavings(), false, true);
// String.format(Locale.US, " / DST %+d minutes", timeZone.getDSTSavings()/1000/60);
}
return result;
}
/** {@inheritDoc} */
@Override
public void appendTo(final StringBuffer buffer, final Calendar calendar) {
final TimeZone zone = calendar.getTimeZone();
if (zone.useDaylightTime() && calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(getTimeZoneDisplay(zone, true, mStyle, mLocale));
} else {
buffer.append(getTimeZoneDisplay(zone, false, mStyle, mLocale));
}
}
private CharSequence buildGmtDisplayName(TimeZone tz, long timeMillis, boolean grayGmt) {
Time time = new Time(tz.getID());
time.set(timeMillis);
StringBuilder sb = new StringBuilder();
String displayName = getDisplayName(tz, time.isDst != 0);
sb.append(displayName);
sb.append(" ");
final int gmtOffset = tz.getOffset(timeMillis);
int gmtStart = sb.length();
appendGmtOffset(sb, gmtOffset);
int gmtEnd = sb.length();
int symbolStart = 0;
int symbolEnd = 0;
if (tz.useDaylightTime()) {
sb.append(" ");
symbolStart = sb.length();
sb.append(getDstSymbol()); // Sun symbol
symbolEnd = sb.length();
}
// Set the gray colors.
Spannable spannableText = mSpannableFactory.newSpannable(sb);
if (grayGmt) {
spannableText.setSpan(
new ForegroundColorSpan(GMT_TEXT_COLOR),
gmtStart,
gmtEnd,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
if (tz.useDaylightTime()) {
spannableText.setSpan(
new ForegroundColorSpan(DST_SYMBOL_COLOR),
symbolStart,
symbolEnd,
Spannable.SPAN_EXCLUSIVE_EXCLUSIVE);
}
CharSequence gmtDisplayName = spannableText;
return gmtDisplayName;
}
public void appendTo(StringBuffer buffer, Calendar calendar) {
TimeZone timeZone;
if ((timeZone = mTimeZone) != null) {
if (timeZone.useDaylightTime() && calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(mDaylight);
} else {
buffer.append(mStandard);
}
} else {
timeZone = calendar.getTimeZone();
if (timeZone.useDaylightTime() && calendar.get(Calendar.DST_OFFSET) != 0) {
buffer.append(getTimeZoneDisplay(timeZone, true, mStyle, mLocale));
} else {
buffer.append(getTimeZoneDisplay(timeZone, false, mStyle, mLocale));
}
}
}
private static void printTZ(TimeZone tz) {
String tzid = tz.getID();
String gmtOffset = toGMTOffsetString(tz.getRawOffset());
boolean isDst = tz.useDaylightTime();
String clazz = tz.getClass().getSimpleName();
String text =
String.format(
"%-20s (%s) - hasDST=%s (%s:%08x)",
tzid, gmtOffset, (isDst ? "Y" : "N"), clazz, tz.hashCode());
System.out.println(text);
}
void test1() {
Locale[] available = Locale.getAvailableLocales();
List<Locale> jreimplloc =
Arrays.asList(
LocaleProviderAdapter.forJRE().getTimeZoneNameProvider().getAvailableLocales());
List<Locale> providerLocales = Arrays.asList(tznp.getAvailableLocales());
String[] ids = TimeZone.getAvailableIDs();
for (Locale target : available) {
// pure JRE implementation
OpenListResourceBundle rb =
((ResourceBundleBasedAdapter) LocaleProviderAdapter.forJRE())
.getLocaleData()
.getTimeZoneNames(target);
boolean jreSupportsTarget = jreimplloc.contains(target);
for (String id : ids) {
// the time zone
TimeZone tz = TimeZone.getTimeZone(id);
// JRE string array for the id
String[] jrearray = null;
if (jreSupportsTarget) {
try {
jrearray = rb.getStringArray(id);
} catch (MissingResourceException mre) {
}
}
for (int i = 1; i <= (tz.useDaylightTime() ? 4 : 2); i++) {
// the localized name
String name = tz.getDisplayName(i >= 3, i % 2, target);
// provider's name (if any)
String providersname = null;
if (providerLocales.contains(target)) {
providersname = tznp.getDisplayName(id, i >= 3, i % 2, target);
}
// JRE's name
String jresname = null;
if (jrearray != null) {
jresname = jrearray[i];
}
checkValidity(
target, jresname, providersname, name, jreSupportsTarget && jresname != null);
}
}
}
}
private void displayTZ(TimeZone... timezone) {
System.out.printf(
"%32s, %5s \t,%15s\t,%15s,%6s\n", "Time Zone", "inDST", "offset", "DSTSavings", "useDST");
Date date = new Date();
for (TimeZone tz : timezone) {
System.out.printf(
"%32s, %5s \t,%15d(%d)\t,%15d,%6s\n",
tz.getID(),
tz.inDaylightTime(date),
tz.getOffset(date.getTime()),
tz.getOffset(date.getTime()) / (60 * 60 * 1000),
tz.getDSTSavings(),
tz.useDaylightTime());
}
}