Package org.apache.tools.ant.util
Class DateUtils
java.lang.Object
org.apache.tools.ant.util.DateUtils
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Field Summary
Modifier and TypeFieldDescriptionstatic final DateFormat
Deprecated.DateFormat is not thread safe, and we cannot guarantee that some other code is using the format in parallel.static final ThreadLocal
<DateFormat> Provides a thread-local US-style date format.static final ThreadLocal
<DateFormat> Provides a thread-local US-style date format.static final String
ISO8601-like pattern for date.static final String
ISO8601-like pattern for date-time.static final String
ISO8601-like pattern for time. -
Method Summary
Modifier and TypeMethodDescriptionstatic String
Format a date/time into a specific pattern.static String
Format a date/time into a specific pattern.static String
formatElapsedTime
(long millis) Format an elapsed time into a pluralization correct string.static String
Returns the current Date in a format suitable for a SMTP date header.static int
getPhaseOfMoon
(Calendar cal) Calculate the phase of the moon for a given date.static Date
parseDateFromHeader
(String datestr) Parses the string in a format suitable for a SMTP date header.static Date
parseIso8601Date
(String datestr) Parse a string as a date using the ISO8601_DATE format which isyyyy-MM-dd
static Date
parseIso8601DateTime
(String datestr) Parse a string as a datetime using the ISO8601_DATETIME format which isyyyy-MM-dd'T'HH:mm:ss
static Date
parseIso8601DateTimeOrDate
(String datestr) Parse a string as a date using the either the ISO8601_DATETIME or ISO8601_DATE formats.static Date
parseLenientDateTime
(String dateStr) Parse a lenient ISO 8601, ms since epoch, or<touch>
-style date.
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Field Details
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ISO8601_DATETIME_PATTERN
ISO8601-like pattern for date-time. It does not support timezone.yyyy-MM-ddTHH:mm:ss
- See Also:
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ISO8601_DATE_PATTERN
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ISO8601_TIME_PATTERN
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DATE_HEADER_FORMAT
Deprecated.DateFormat is not thread safe, and we cannot guarantee that some other code is using the format in parallel. Deprecated since ant 1.8Format used for SMTP (and probably other) Date headers. -
EN_US_DATE_FORMAT_MIN
Provides a thread-local US-style date format. Exactly as used by<touch>
, to minute precision:SimpleDateFormat("MM/dd/yyyy hh:mm a", Locale.US)
- Since:
- Ant 1.10.2
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EN_US_DATE_FORMAT_SEC
Provides a thread-local US-style date format. Exactly as used by<touch>
, to second precision:SimpleDateFormat("MM/dd/yyyy hh:mm:ss a", Locale.US)
- Since:
- Ant 1.10.2
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Method Details
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format
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format
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formatElapsedTime
Format an elapsed time into a pluralization correct string. It is limited only to report elapsed time in minutes and seconds and has the following behavior.- minutes are not displayed when 0. (ie: "45 seconds")
- seconds are always displayed in plural form (ie "0 seconds" or "10 seconds") except for 1 (ie "1 second")
- Parameters:
millis
- the elapsed time to report in milliseconds.- Returns:
- the formatted text in minutes/seconds.
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getPhaseOfMoon
Calculate the phase of the moon for a given date.Code heavily influenced by hacklib.c in Nethack
The Algorithm:
moon period = 29.53058 days ~= 30, year = 365.2422 days days moon phase advances on first day of year compared to preceding year = 365.2422 - 12 * 29.53058 ~= 11 years in Metonic cycle (time until same phases fall on the same days of the month) = 18.6 ~= 19 moon phase on first day of year (epact) ~= (11*(year%19) + 18) % 30 (18 as initial condition for 1900) current phase in days = first day phase + days elapsed in year 6 moons ~= 177 days 177 ~= 8 reported phases * 22 + 11 / 22 for rounding
- Parameters:
cal
- the calendar.- Returns:
- The phase of the moon as a number between 0 and 7 with 0 meaning new moon and 4 meaning full moon.
- Since:
- 1.2, Ant 1.5
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getDateForHeader
Returns the current Date in a format suitable for a SMTP date header.- Returns:
- the current date.
- Since:
- Ant 1.5.2
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parseDateFromHeader
Parses the string in a format suitable for a SMTP date header.- Parameters:
datestr
- string to be parsed- Returns:
- a java.util.Date object as parsed by the format.
- Throws:
ParseException
- if the supplied string cannot be parsed by this pattern.- Since:
- Ant 1.8.0
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parseIso8601DateTime
Parse a string as a datetime using the ISO8601_DATETIME format which isyyyy-MM-dd'T'HH:mm:ss
- Parameters:
datestr
- string to be parsed- Returns:
- a java.util.Date object as parsed by the format.
- Throws:
ParseException
- if the supplied string cannot be parsed by this pattern.- Since:
- Ant 1.6
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parseIso8601Date
Parse a string as a date using the ISO8601_DATE format which isyyyy-MM-dd
- Parameters:
datestr
- string to be parsed- Returns:
- a java.util.Date object as parsed by the format.
- Throws:
ParseException
- if the supplied string cannot be parsed by this pattern.- Since:
- Ant 1.6
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parseIso8601DateTimeOrDate
Parse a string as a date using the either the ISO8601_DATETIME or ISO8601_DATE formats.- Parameters:
datestr
- string to be parsed- Returns:
- a java.util.Date object as parsed by the formats.
- Throws:
ParseException
- if the supplied string cannot be parsed by either of these patterns.- Since:
- Ant 1.6
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parseLenientDateTime
Parse a lenient ISO 8601, ms since epoch, or<touch>
-style date. That is:- Milliseconds since 1970-01-01 00:00
YYYY-MM-DD{T| }HH:MM[:SS[.SSS]][ ][±ZZ[[:]ZZ]]
MM/DD/YYYY HH:MM[:SS] {AM|PM}
- Parameters:
dateStr
- String- Returns:
- Date
- Throws:
ParseException
- if date string does not match ISO 8601- Since:
- Ant 1.10.2
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