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Time::ParseDate.3pm

NAME

Time::ParseDate -- date parsing both relative and absolute

SYNOPSIS

        use Time::ParseDate;

        $seconds_since_jan1_1970 = parsedate("12/11/94 2pm", NO_RELATIVE => 1)

        $seconds_since_jan1_1970 = parsedate("12/11/94 2pm", %options)

OPTIONS

Date parsing can also use options. The options are as follows:

        FUZZY   -> it's okay not to parse the entire date string

        NOW     -> the "current" time for relative times (defaults to time())

        ZONE    -> local timezone (defaults to $ENV{TZ})

        WHOLE   -> the whole input string must be parsed

        GMT     -> input time is assumed to be GMT, not localtime

        UK      -> prefer UK style dates (dd/mm over mm/dd)

        DATE_REQUIRED -> do not default the date

        TIME_REQUIRED -> do not default the time

        NO_RELATIVE -> input time is not relative to NOW

        TIMEFIRST -> try parsing time before date [not default]

        PREFER_PAST -> when year or day of week is ambigueous, assume past

        PREFER_FUTURE -> when year or day of week is ambigueous, assume future

        SUBSECOND -> parse fraction seconds

        VALIDATE -> only accept normal values for HHMMSS, YYMMDD.  Otherwise

                days like -1 might give the last day of the previous month.

DATE FORMATS RECOGNIZED

Absolute date formats

        Dow, dd Mon yy

        Dow, dd Mon yyyy

        Dow, dd Mon

        dd Mon yy

        dd Mon yyyy

        Month day{st,nd,rd,th}, year

        Month day{st,nd,rd,th}

        Mon dd yyyy

        yyyy/mm/dd

        yyyy-mm-dd      (usually the best date specification syntax)

        yyyy/mm

        mm/dd/yy

        mm/dd/yyyy

        mm/yy

        yy/mm      (only if year > 12, or > 31 if UK)

        yy/mm/dd   (only if year > 12 and day < 32, or year > 31 if UK)

        dd/mm/yy   (only if UK, or an invalid mm/dd/yy or yy/mm/dd)

        dd/mm/yyyy (only if UK, or an invalid mm/dd/yyyy)

        dd/mm      (only if UK, or an invalid mm/dd)

Relative date formats:

        count "days"

        count "weeks"

        count "months"

        count "years"

        Dow "after next"

        Dow "before last"

        Dow                     (requires PREFER_PAST or PREFER_FUTURE)

        "next" Dow

        "tomorrow"

        "today"

        "yesterday"

        "last" dow

        "last week"

        "now"

        "now" "+" count units

        "now" "-" count units

        "+" count units         

        "-" count units

        count units "ago"

Absolute time formats:

        hh:mm:ss[.ddd] 

        hh:mm 

        hh:mm[AP]M

        hh[AP]M

        hhmmss[[AP]M] 

        "noon"

        "midnight"

Relative time formats:

        count "minutes"         (count can be franctional "1.5" or "1 1/2")

        count "seconds"

        count "hours"

        "+" count units

        "+" count

        "-" count units

        "-" count

        count units "ago"

Timezone formats:

        [+-]dddd

        GMT[+-]d+

        [+-]dddd (TZN)

        TZN

Special formats:

        [ d]d/Mon/yyyy:hh:mm:ss [[+-]dddd]

        yy/mm/dd.hh:mm

DESCRIPTION

This module recognizes the above date/time formats. Usually a date and a time are specified. There are numerous options for controlling what is recognized and what is not.

The return code is always the time in seconds since January 1st, 1970 or undef if it was unable to parse the time.

If a timezone is specified it must be after the time. Year specifications can be tacked onto the end of absolute times.

If "parsedate()" is called from array context, then it will return two elements. On sucessful parses, it will return the seconds and what remains of its input string. On unsucessful parses, it will return "undef" and an error string.

EXAMPLES

        $seconds = parsedate("Mon Jan  2 04:24:27 1995");

        $seconds = parsedate("Tue Apr 4 00:22:12 PDT 1995");

        $seconds = parsedate("04.04.95 00:22", ZONE => PDT);

        $seconds = parsedate("Jan 1 1999 11:23:34.578", SUBSECOND => 1);

        $seconds = parsedate("122212 950404", ZONE => PDT, TIMEFIRST => 1);

        $seconds = parsedate("+3 secs", NOW => 796978800);

        $seconds = parsedate("2 months", NOW => 796720932);

        $seconds = parsedate("last Tuesday");

        $seconds = parsedate("Sunday before last");

        ($seconds, $remaining) = parsedate("today is the day");

        ($seconds, $error) = parsedate("today is", WHOLE=>1);

AUTHOR

David Muir Sharnoff <muir@idiom.com>.

LICENSE

Copyright (C) 1996-2006 David Muir Sharnoff. License hereby granted for anyone to use, modify or redistribute this module at their own risk. Please feed useful changes back to muir@idiom.com.