diff options
author | Reinhard Kotucha <reinhard.kotucha@web.de> | 2008-01-05 21:23:03 +0000 |
---|---|---|
committer | Reinhard Kotucha <reinhard.kotucha@web.de> | 2008-01-05 21:23:03 +0000 |
commit | 61700e8be90ff6f495c0b1a9835fe07e9848de8d (patch) | |
tree | ba85dbc1413d5f834a501a8828e3b67678ba8524 /Master/tlpkg/tlperl/lib/Time | |
parent | 270728c6f3efcac6728d2c335c79824c356f428d (diff) |
tlperl: Perl for scripts provided by TeX Live.
git-svn-id: svn://tug.org/texlive/trunk@6046 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Master/tlpkg/tlperl/lib/Time')
-rw-r--r-- | Master/tlpkg/tlperl/lib/Time/HiRes.pm | 500 | ||||
-rw-r--r-- | Master/tlpkg/tlperl/lib/Time/Local.pm | 366 | ||||
-rw-r--r-- | Master/tlpkg/tlperl/lib/Time/gmtime.pm | 90 | ||||
-rw-r--r-- | Master/tlpkg/tlperl/lib/Time/localtime.pm | 86 | ||||
-rw-r--r-- | Master/tlpkg/tlperl/lib/Time/tm.pm | 33 |
5 files changed, 1075 insertions, 0 deletions
diff --git a/Master/tlpkg/tlperl/lib/Time/HiRes.pm b/Master/tlpkg/tlperl/lib/Time/HiRes.pm new file mode 100644 index 00000000000..964e4385dfc --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Time/HiRes.pm @@ -0,0 +1,500 @@ +package Time::HiRes; + +use strict; +use vars qw($VERSION $XS_VERSION @ISA @EXPORT @EXPORT_OK $AUTOLOAD); + +require Exporter; +require DynaLoader; + +@ISA = qw(Exporter DynaLoader); + +@EXPORT = qw( ); +@EXPORT_OK = qw (usleep sleep ualarm alarm gettimeofday time tv_interval + getitimer setitimer nanosleep clock_gettime clock_getres + clock clock_nanosleep + CLOCK_HIGHRES CLOCK_MONOTONIC CLOCK_PROCESS_CPUTIME_ID + CLOCK_REALTIME CLOCK_SOFTTIME CLOCK_THREAD_CPUTIME_ID + CLOCK_TIMEOFDAY CLOCKS_PER_SEC + ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF ITIMER_REALPROF + TIMER_ABSTIME + d_usleep d_ualarm d_gettimeofday d_getitimer d_setitimer + d_nanosleep d_clock_gettime d_clock_getres + d_clock d_clock_nanosleep); + +$VERSION = '1.86'; +$XS_VERSION = $VERSION; +$VERSION = eval $VERSION; + +sub AUTOLOAD { + my $constname; + ($constname = $AUTOLOAD) =~ s/.*:://; + # print "AUTOLOAD: constname = $constname ($AUTOLOAD)\n"; + die "&Time::HiRes::constant not defined" if $constname eq 'constant'; + my ($error, $val) = constant($constname); + # print "AUTOLOAD: error = $error, val = $val\n"; + if ($error) { + my (undef,$file,$line) = caller; + die "$error at $file line $line.\n"; + } + { + no strict 'refs'; + *$AUTOLOAD = sub { $val }; + } + goto &$AUTOLOAD; +} + +sub import { + my $this = shift; + for my $i (@_) { + if (($i eq 'clock_getres' && !&d_clock_getres) || + ($i eq 'clock_gettime' && !&d_clock_gettime) || + ($i eq 'clock_nanosleep' && !&d_clock_nanosleep) || + ($i eq 'clock' && !&d_clock) || + ($i eq 'nanosleep' && !&d_nanosleep) || + ($i eq 'usleep' && !&d_usleep) || + ($i eq 'ualarm' && !&d_ualarm)) { + require Carp; + Carp::croak("Time::HiRes::$i(): unimplemented in this platform"); + } + } + Time::HiRes->export_to_level(1, $this, @_); +} + +bootstrap Time::HiRes; + +# Preloaded methods go here. + +sub tv_interval { + # probably could have been done in C + my ($a, $b) = @_; + $b = [gettimeofday()] unless defined($b); + (${$b}[0] - ${$a}[0]) + ((${$b}[1] - ${$a}[1]) / 1_000_000); +} + +# Autoload methods go after =cut, and are processed by the autosplit program. + +1; +__END__ + +=head1 NAME + +Time::HiRes - High resolution alarm, sleep, gettimeofday, interval timers + +=head1 SYNOPSIS + + use Time::HiRes qw( usleep ualarm gettimeofday tv_interval nanosleep + clock_gettime clock_getres clock_nanosleep clock ); + + usleep ($microseconds); + nanosleep ($nanoseconds); + + ualarm ($microseconds); + ualarm ($microseconds, $interval_microseconds); + + $t0 = [gettimeofday]; + ($seconds, $microseconds) = gettimeofday; + + $elapsed = tv_interval ( $t0, [$seconds, $microseconds]); + $elapsed = tv_interval ( $t0, [gettimeofday]); + $elapsed = tv_interval ( $t0 ); + + use Time::HiRes qw ( time alarm sleep ); + + $now_fractions = time; + sleep ($floating_seconds); + alarm ($floating_seconds); + alarm ($floating_seconds, $floating_interval); + + use Time::HiRes qw( setitimer getitimer + ITIMER_REAL ITIMER_VIRTUAL ITIMER_PROF ITIMER_REALPROF ); + + setitimer ($which, $floating_seconds, $floating_interval ); + getitimer ($which); + + $realtime = clock_gettime(CLOCK_REALTIME); + $resolution = clock_getres(CLOCK_REALTIME); + + clock_nanosleep(CLOCK_REALTIME, 1.5); + clock_nanosleep(CLOCK_REALTIME, time() + 10, TIMER_ABSTIME); + + my $ticktock = clock(); + +=head1 DESCRIPTION + +The C<Time::HiRes> module implements a Perl interface to the +C<usleep>, C<nanosleep>, C<ualarm>, C<gettimeofday>, and +C<setitimer>/C<getitimer> system calls, in other words, high +resolution time and timers. See the L</EXAMPLES> section below and the +test scripts for usage; see your system documentation for the +description of the underlying C<nanosleep> or C<usleep>, C<ualarm>, +C<gettimeofday>, and C<setitimer>/C<getitimer> calls. + +If your system lacks C<gettimeofday()> or an emulation of it you don't +get C<gettimeofday()> or the one-argument form of C<tv_interval()>. +If your system lacks all of C<nanosleep()>, C<usleep()>, +C<select()>, and C<poll>, you don't get C<Time::HiRes::usleep()>, +C<Time::HiRes::nanosleep()>, or C<Time::HiRes::sleep()>. +If your system lacks both C<ualarm()> and C<setitimer()> you don't get +C<Time::HiRes::ualarm()> or C<Time::HiRes::alarm()>. + +If you try to import an unimplemented function in the C<use> statement +it will fail at compile time. + +If your subsecond sleeping is implemented with C<nanosleep()> instead +of C<usleep()>, you can mix subsecond sleeping with signals since +C<nanosleep()> does not use signals. This, however, is not portable, +and you should first check for the truth value of +C<&Time::HiRes::d_nanosleep> to see whether you have nanosleep, and +then carefully read your C<nanosleep()> C API documentation for any +peculiarities. + +If you are using C<nanosleep> for something else than mixing sleeping +with signals, give some thought to whether Perl is the tool you should +be using for work requiring nanosecond accuracies. + +The following functions can be imported from this module. +No functions are exported by default. + +=over 4 + +=item gettimeofday () + +In array context returns a two-element array with the seconds and +microseconds since the epoch. In scalar context returns floating +seconds like C<Time::HiRes::time()> (see below). + +=item usleep ( $useconds ) + +Sleeps for the number of microseconds (millionths of a second) +specified. Returns the number of microseconds actually slept. Can +sleep for more than one second, unlike the C<usleep> system call. Can +also sleep for zero seconds, which often works like a I<thread yield>. +See also C<Time::HiRes::usleep()>, C<Time::HiRes::sleep()>, and +C<Time::HiRes::clock_nanosleep()>. + +Do not expect usleep() to be exact down to one microsecond. + +=item nanosleep ( $nanoseconds ) + +Sleeps for the number of nanoseconds (1e9ths of a second) specified. +Returns the number of nanoseconds actually slept (accurate only to +microseconds, the nearest thousand of them). Can sleep for more than +one second. Can also sleep for zero seconds, which often works like a +I<thread yield>. See also C<Time::HiRes::sleep()>, +C<Time::HiRes::usleep()>, and C<Time::HiRes::clock_nanosleep()>. + +Do not expect nanosleep() to be exact down to one nanosecond. +Getting even accuracy of one thousand nanoseconds is good. + +=item ualarm ( $useconds [, $interval_useconds ] ) + +Issues a C<ualarm> call; the C<$interval_useconds> is optional and +will be zero if unspecified, resulting in C<alarm>-like behaviour. + +Note that the interaction between alarms and sleeps is unspecified. + +=item tv_interval + +tv_interval ( $ref_to_gettimeofday [, $ref_to_later_gettimeofday] ) + +Returns the floating seconds between the two times, which should have +been returned by C<gettimeofday()>. If the second argument is omitted, +then the current time is used. + +=item time () + +Returns a floating seconds since the epoch. This function can be +imported, resulting in a nice drop-in replacement for the C<time> +provided with core Perl; see the L</EXAMPLES> below. + +B<NOTE 1>: This higher resolution timer can return values either less +or more than the core C<time()>, depending on whether your platform +rounds the higher resolution timer values up, down, or to the nearest second +to get the core C<time()>, but naturally the difference should be never +more than half a second. See also L</clock_getres>, if available +in your system. + +B<NOTE 2>: Since Sunday, September 9th, 2001 at 01:46:40 AM GMT, when +the C<time()> seconds since epoch rolled over to 1_000_000_000, the +default floating point format of Perl and the seconds since epoch have +conspired to produce an apparent bug: if you print the value of +C<Time::HiRes::time()> you seem to be getting only five decimals, not +six as promised (microseconds). Not to worry, the microseconds are +there (assuming your platform supports such granularity in the first +place). What is going on is that the default floating point format of +Perl only outputs 15 digits. In this case that means ten digits +before the decimal separator and five after. To see the microseconds +you can use either C<printf>/C<sprintf> with C<"%.6f">, or the +C<gettimeofday()> function in list context, which will give you the +seconds and microseconds as two separate values. + +=item sleep ( $floating_seconds ) + +Sleeps for the specified amount of seconds. Returns the number of +seconds actually slept (a floating point value). This function can +be imported, resulting in a nice drop-in replacement for the C<sleep> +provided with perl, see the L</EXAMPLES> below. + +Note that the interaction between alarms and sleeps is unspecified. + +=item alarm ( $floating_seconds [, $interval_floating_seconds ] ) + +The C<SIGALRM> signal is sent after the specified number of seconds. +Implemented using C<ualarm()>. The C<$interval_floating_seconds> argument +is optional and will be zero if unspecified, resulting in C<alarm()>-like +behaviour. This function can be imported, resulting in a nice drop-in +replacement for the C<alarm> provided with perl, see the L</EXAMPLES> below. + +B<NOTE 1>: With some combinations of operating systems and Perl +releases C<SIGALRM> restarts C<select()>, instead of interrupting it. +This means that an C<alarm()> followed by a C<select()> may together +take the sum of the times specified for the the C<alarm()> and the +C<select()>, not just the time of the C<alarm()>. + +Note that the interaction between alarms and sleeps is unspecified. + +=item setitimer ( $which, $floating_seconds [, $interval_floating_seconds ] ) + +Start up an interval timer: after a certain time, a signal arrives, +and more signals may keep arriving at certain intervals. To disable +an "itimer", use C<$floating_seconds> of zero. If the +C<$interval_floating_seconds> is set to zero (or unspecified), the +timer is disabled B<after> the next delivered signal. + +Use of interval timers may interfere with C<alarm()>, C<sleep()>, +and C<usleep()>. In standard-speak the "interaction is unspecified", +which means that I<anything> may happen: it may work, it may not. + +In scalar context, the remaining time in the timer is returned. + +In list context, both the remaining time and the interval are returned. + +There are usually three or four interval timers available: the +C<$which> can be C<ITIMER_REAL>, C<ITIMER_VIRTUAL>, C<ITIMER_PROF>, or +C<ITIMER_REALPROF>. Note that which ones are available depends: true +UNIX platforms usually have the first three, but (for example) Win32 +and Cygwin have only C<ITIMER_REAL>, and only Solaris seems to have +C<ITIMER_REALPROF> (which is used to profile multithreaded programs). + +C<ITIMER_REAL> results in C<alarm()>-like behaviour. Time is counted in +I<real time>; that is, wallclock time. C<SIGALRM> is delivered when +the timer expires. + +C<ITIMER_VIRTUAL> counts time in (process) I<virtual time>; that is, +only when the process is running. In multiprocessor/user/CPU systems +this may be more or less than real or wallclock time. (This time is +also known as the I<user time>.) C<SIGVTALRM> is delivered when the +timer expires. + +C<ITIMER_PROF> counts time when either the process virtual time or when +the operating system is running on behalf of the process (such as I/O). +(This time is also known as the I<system time>.) (The sum of user +time and system time is known as the I<CPU time>.) C<SIGPROF> is +delivered when the timer expires. C<SIGPROF> can interrupt system calls. + +The semantics of interval timers for multithreaded programs are +system-specific, and some systems may support additional interval +timers. See your C<setitimer()> documentation. + +=item getitimer ( $which ) + +Return the remaining time in the interval timer specified by C<$which>. + +In scalar context, the remaining time is returned. + +In list context, both the remaining time and the interval are returned. +The interval is always what you put in using C<setitimer()>. + +=item clock_gettime ( $which ) + +Return as seconds the current value of the POSIX high resolution timer +specified by C<$which>. All implementations that support POSIX high +resolution timers are supposed to support at least the C<$which> value +of C<CLOCK_REALTIME>, which is supposed to return results close to the +results of C<gettimeofday>, or the number of seconds since 00:00:00:00 +January 1, 1970 Greenwich Mean Time (GMT). Do not assume that +CLOCK_REALTIME is zero, it might be one, or something else. +Another potentially useful (but not available everywhere) value is +C<CLOCK_MONOTONIC>, which guarantees a monotonically increasing time +value (unlike time(), which can be adjusted). See your system +documentation for other possibly supported values. + +=item clock_getres ( $which ) + +Return as seconds the resolution of the POSIX high resolution timer +specified by C<$which>. All implementations that support POSIX high +resolution timers are supposed to support at least the C<$which> value +of C<CLOCK_REALTIME>, see L</clock_gettime>. + +=item clock_nanosleep ( $which, $seconds, $flags = 0) + +Sleeps for the number of seconds (1e9ths of a second) specified. +Returns the number of seconds actually slept. The $which is the +"clock id", as with clock_gettime() and clock_getres(). The flags +default to zero but C<TIMER_ABSTIME> can specified (must be exported +explicitly) which means that C<$nanoseconds> is not a time interval +(as is the default) but instead an absolute time. Can sleep for more +than one second. Can also sleep for zero seconds, which often works +like a I<thread yield>. See also C<Time::HiRes::sleep()>, +C<Time::HiRes::usleep()>, and C<Time::HiRes::nanosleep()>. + +Do not expect clock_nanosleep() to be exact down to one nanosecond. +Getting even accuracy of one thousand nanoseconds is good. + +=item clock() + +Return as seconds the I<process time> (user + system time) spent by +the process since the first call to clock() (the definition is B<not> +"since the start of the process", though if you are lucky these times +may be quite close to each other, depending on the system). What this +means is that you probably need to store the result of your first call +to clock(), and subtract that value from the following results of clock(). + +The time returned also includes the process times of the terminated +child processes for which wait() has been executed. This value is +somewhat like the second value returned by the times() of core Perl, +but not necessarily identical. Note that due to backward +compatibility limitations the returned value may wrap around at about +2147 seconds or at about 36 minutes. + +=back + +=head1 EXAMPLES + + use Time::HiRes qw(usleep ualarm gettimeofday tv_interval); + + $microseconds = 750_000; + usleep($microseconds); + + # signal alarm in 2.5s & every .1s thereafter + ualarm(2_500_000, 100_000); + + # get seconds and microseconds since the epoch + ($s, $usec) = gettimeofday(); + + # measure elapsed time + # (could also do by subtracting 2 gettimeofday return values) + $t0 = [gettimeofday]; + # do bunch of stuff here + $t1 = [gettimeofday]; + # do more stuff here + $t0_t1 = tv_interval $t0, $t1; + + $elapsed = tv_interval ($t0, [gettimeofday]); + $elapsed = tv_interval ($t0); # equivalent code + + # + # replacements for time, alarm and sleep that know about + # floating seconds + # + use Time::HiRes; + $now_fractions = Time::HiRes::time; + Time::HiRes::sleep (2.5); + Time::HiRes::alarm (10.6666666); + + use Time::HiRes qw ( time alarm sleep ); + $now_fractions = time; + sleep (2.5); + alarm (10.6666666); + + # Arm an interval timer to go off first at 10 seconds and + # after that every 2.5 seconds, in process virtual time + + use Time::HiRes qw ( setitimer ITIMER_VIRTUAL time ); + + $SIG{VTALRM} = sub { print time, "\n" }; + setitimer(ITIMER_VIRTUAL, 10, 2.5); + + use Time::HiRes qw( clock_gettime clock_getres CLOCK_REALTIME ); + # Read the POSIX high resolution timer. + my $high = clock_getres(CLOCK_REALTIME); + # But how accurate we can be, really? + my $reso = clock_getres(CLOCK_REALTIME); + + use Time::HiRes qw( clock_nanosleep TIMER_ABSTIME ); + clock_nanosleep(CLOCK_REALTIME, 1e6); + clock_nanosleep(CLOCK_REALTIME, 2e9, TIMER_ABSTIME); + + use Time::HiRes qw( clock ); + my $clock0 = clock(); + ... # Do something. + my $clock1 = clock(); + my $clockd = $clock1 - $clock0; + +=head1 C API + +In addition to the perl API described above, a C API is available for +extension writers. The following C functions are available in the +modglobal hash: + + name C prototype + --------------- ---------------------- + Time::NVtime double (*)() + Time::U2time void (*)(pTHX_ UV ret[2]) + +Both functions return equivalent information (like C<gettimeofday>) +but with different representations. The names C<NVtime> and C<U2time> +were selected mainly because they are operating system independent. +(C<gettimeofday> is Unix-centric, though some platforms like Win32 and +VMS have emulations for it.) + +Here is an example of using C<NVtime> from C: + + double (*myNVtime)(); /* Returns -1 on failure. */ + SV **svp = hv_fetch(PL_modglobal, "Time::NVtime", 12, 0); + if (!svp) croak("Time::HiRes is required"); + if (!SvIOK(*svp)) croak("Time::NVtime isn't a function pointer"); + myNVtime = INT2PTR(double(*)(), SvIV(*svp)); + printf("The current time is: %f\n", (*myNVtime)()); + +=head1 DIAGNOSTICS + +=head2 negative time not invented yet + +You tried to use a negative time argument. + +=head2 internal error: useconds < 0 (unsigned ... signed ...) + +Something went horribly wrong-- the number of microseconds that cannot +become negative just became negative. Maybe your compiler is broken? + +=head1 CAVEATS + +Notice that the core C<time()> maybe rounding rather than truncating. +What this means is that the core C<time()> may be reporting the time +as one second later than C<gettimeofday()> and C<Time::HiRes::time()>. + +Adjusting the system clock (either manually or by services like ntp) +may cause problems, especially for long running programs that assume +a monotonously increasing time (note that all platforms do not adjust +time as gracefully as UNIX ntp does). For example in Win32 (and derived +platforms like Cygwin and MinGW) the Time::HiRes::time() may temporarily +drift off from the system clock (and the original time()) by up to 0.5 +seconds. Time::HiRes will notice this eventually and recalibrate. +Note that since Time::HiRes 1.77 the clock_gettime(CLOCK_MONOTONIC) +might help in this (in case your system supports CLOCK_MONOTONIC). + +=head1 SEE ALSO + +Perl modules L<BSD::Resource>, L<Time::TAI64>. + +Your system documentation for C<clock_gettime>, C<clock_settime>, +C<gettimeofday>, C<getitimer>, C<setitimer>, C<ualarm>. + +=head1 AUTHORS + +D. Wegscheid <wegscd@whirlpool.com> +R. Schertler <roderick@argon.org> +J. Hietaniemi <jhi@iki.fi> +G. Aas <gisle@aas.no> + +=head1 COPYRIGHT AND LICENSE + +Copyright (c) 1996-2002 Douglas E. Wegscheid. All rights reserved. + +Copyright (c) 2002, 2003, 2004, 2005 Jarkko Hietaniemi. All rights reserved. + +This program is free software; you can redistribute it and/or modify +it under the same terms as Perl itself. + +=cut diff --git a/Master/tlpkg/tlperl/lib/Time/Local.pm b/Master/tlpkg/tlperl/lib/Time/Local.pm new file mode 100644 index 00000000000..912f17d0310 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Time/Local.pm @@ -0,0 +1,366 @@ +package Time::Local; + +require Exporter; +use Carp; +use Config; +use strict; +use integer; + +use vars qw( $VERSION @ISA @EXPORT @EXPORT_OK ); +$VERSION = '1.11'; +$VERSION = eval $VERSION; +@ISA = qw( Exporter ); +@EXPORT = qw( timegm timelocal ); +@EXPORT_OK = qw( timegm_nocheck timelocal_nocheck ); + +my @MonthDays = (31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31); + +# Determine breakpoint for rolling century +my $ThisYear = (localtime())[5]; +my $Breakpoint = ($ThisYear + 50) % 100; +my $NextCentury = $ThisYear - $ThisYear % 100; + $NextCentury += 100 if $Breakpoint < 50; +my $Century = $NextCentury - 100; +my $SecOff = 0; + +my (%Options, %Cheat, %Min, %Max); +my ($MinInt, $MaxInt); + +if ($^O eq 'MacOS') { + # time_t is unsigned... + $MaxInt = (1 << (8 * $Config{intsize})) - 1; + $MinInt = 0; +} else { + $MaxInt = ((1 << (8 * $Config{intsize} - 2))-1)*2 + 1; + $MinInt = -$MaxInt - 1; + + # On Win32 (and others?) time_t appears to be signed, but negative + # epochs still don't work. - XXX - this is experimental + $MinInt = 0 + unless defined ((localtime(-1))[0]); +} + +$Max{Day} = ($MaxInt >> 1) / 43200; +$Min{Day} = $MinInt ? -($Max{Day} + 1) : 0; + +$Max{Sec} = $MaxInt - 86400 * $Max{Day}; +$Min{Sec} = $MinInt - 86400 * $Min{Day}; + +# Determine the EPOC day for this machine +my $Epoc = 0; +if ($^O eq 'vos') { +# work around posix-977 -- VOS doesn't handle dates in +# the range 1970-1980. + $Epoc = _daygm((0, 0, 0, 1, 0, 70, 4, 0)); +} +elsif ($^O eq 'MacOS') { + no integer; + + # MacOS time() is seconds since 1 Jan 1904, localtime + # so we need to calculate an offset to apply later + $Epoc = 693901; + $SecOff = timelocal(localtime(0)) - timelocal(gmtime(0)); + $Epoc += _daygm(gmtime(0)); +} +else { + $Epoc = _daygm(gmtime(0)); +} + +%Cheat=(); # clear the cache as epoc has changed + +sub _daygm { + $_[3] + ($Cheat{pack("ss",@_[4,5])} ||= do { + my $month = ($_[4] + 10) % 12; + my $year = $_[5] + 1900 - $month/10; + 365*$year + $year/4 - $year/100 + $year/400 + ($month*306 + 5)/10 - $Epoc + }); +} + + +sub _timegm { + my $sec = $SecOff + $_[0] + 60 * $_[1] + 3600 * $_[2]; + + no integer; + + $sec + 86400 * &_daygm; +} + + +sub _zoneadjust { + my ($day, $sec, $time) = @_; + + $sec = $sec + _timegm(localtime($time)) - $time; + if ($sec >= 86400) { $day++; $sec -= 86400; } + if ($sec < 0) { $day--; $sec += 86400; } + + ($day, $sec); +} + + +sub timegm { + my ($sec,$min,$hour,$mday,$month,$year) = @_; + + if ($year >= 1000) { + $year -= 1900; + } + elsif ($year < 100 and $year >= 0) { + $year += ($year > $Breakpoint) ? $Century : $NextCentury; + } + + unless ($Options{no_range_check}) { + if (abs($year) >= 0x7fff) { + $year += 1900; + croak "Cannot handle date ($sec, $min, $hour, $mday, $month, *$year*)"; + } + + croak "Month '$month' out of range 0..11" if $month > 11 or $month < 0; + + my $md = $MonthDays[$month]; +# ++$md if $month == 1 and $year % 4 == 0 and +# ($year % 100 != 0 or ($year + 1900) % 400 == 0); + ++$md unless $month != 1 or $year % 4 or !($year % 400); + + croak "Day '$mday' out of range 1..$md" if $mday > $md or $mday < 1; + croak "Hour '$hour' out of range 0..23" if $hour > 23 or $hour < 0; + croak "Minute '$min' out of range 0..59" if $min > 59 or $min < 0; + croak "Second '$sec' out of range 0..59" if $sec > 59 or $sec < 0; + } + + my $days = _daygm(undef, undef, undef, $mday, $month, $year); + my $xsec = $sec + $SecOff + 60*$min + 3600*$hour; + + unless ($Options{no_range_check} + or ($days > $Min{Day} or $days == $Min{Day} and $xsec >= $Min{Sec}) + and ($days < $Max{Day} or $days == $Max{Day} and $xsec <= $Max{Sec})) + { + warn "Day too small - $days > $Min{Day}\n" if $days < $Min{Day}; + warn "Day too big - $days > $Max{Day}\n" if $days > $Max{Day}; + warn "Sec too small - $days < $Min{Sec}\n" if $days < $Min{Sec}; + warn "Sec too big - $days > $Max{Sec}\n" if $days > $Max{Sec}; + $year += 1900; + croak "Cannot handle date ($sec, $min, $hour, $mday, $month, $year)"; + } + + no integer; + + $xsec + 86400 * $days; +} + + +sub timegm_nocheck { + local $Options{no_range_check} = 1; + &timegm; +} + + +sub timelocal { + # Adjust Max/Min allowed times to fit local time zone and call timegm + local ($Max{Day}, $Max{Sec}) = _zoneadjust($Max{Day}, $Max{Sec}, $MaxInt); + local ($Min{Day}, $Min{Sec}) = _zoneadjust($Min{Day}, $Min{Sec}, $MinInt); + my $ref_t = &timegm; + + # Calculate first guess with a one-day delta to avoid localtime overflow + my $delta = ($_[5] < 100)? 86400 : -86400; + my $loc_t = _timegm(localtime( $ref_t + $delta )) - $delta; + + # Is there a timezone offset from GMT or are we done + my $zone_off = $ref_t - $loc_t + or return $loc_t; + + # This hack is needed to always pick the first matching time + # during a DST change when time would otherwise be ambiguous + $zone_off -= 3600 if ($delta > 0 && $ref_t >= 3600); + + # Adjust for timezone + $loc_t = $ref_t + $zone_off; + + # Are we close to a DST change or are we done + my $dst_off = $ref_t - _timegm(localtime($loc_t)) + or return $loc_t; + + # Adjust for DST change + $loc_t += $dst_off; + + return $loc_t if $dst_off >= 0; + + # for a negative offset from GMT, and if the original date + # was a non-extent gap in a forward DST jump, we should + # now have the wrong answer - undo the DST adjust; + + my ($s,$m,$h) = localtime($loc_t); + $loc_t -= $dst_off if $s != $_[0] || $m != $_[1] || $h != $_[2]; + + $loc_t; +} + + +sub timelocal_nocheck { + local $Options{no_range_check} = 1; + &timelocal; +} + +1; + +__END__ + +=head1 NAME + +Time::Local - efficiently compute time from local and GMT time + +=head1 SYNOPSIS + + $time = timelocal($sec,$min,$hour,$mday,$mon,$year); + $time = timegm($sec,$min,$hour,$mday,$mon,$year); + +=head1 DESCRIPTION + +These routines are the inverse of built-in perl functions localtime() +and gmtime(). They accept a date as a six-element array, and return +the corresponding time(2) value in seconds since the system epoch +(Midnight, January 1, 1970 GMT on Unix, for example). This value can +be positive or negative, though POSIX only requires support for +positive values, so dates before the system's epoch may not work on +all operating systems. + +It is worth drawing particular attention to the expected ranges for +the values provided. The value for the day of the month is the actual day +(ie 1..31), while the month is the number of months since January (0..11). +This is consistent with the values returned from localtime() and gmtime(). + +The timelocal() and timegm() functions perform range checking on the +input $sec, $min, $hour, $mday, and $mon values by default. If you'd +rather they didn't, you can explicitly import the timelocal_nocheck() +and timegm_nocheck() functions. + + use Time::Local 'timelocal_nocheck'; + + { + # The 365th day of 1999 + print scalar localtime timelocal_nocheck 0,0,0,365,0,99; + + # The twenty thousandth day since 1970 + print scalar localtime timelocal_nocheck 0,0,0,20000,0,70; + + # And even the 10,000,000th second since 1999! + print scalar localtime timelocal_nocheck 10000000,0,0,1,0,99; + } + +Your mileage may vary when trying these with minutes and hours, +and it doesn't work at all for months. + +Strictly speaking, the year should also be specified in a form consistent +with localtime(), i.e. the offset from 1900. +In order to make the interpretation of the year easier for humans, +however, who are more accustomed to seeing years as two-digit or four-digit +values, the following conventions are followed: + +=over 4 + +=item * + +Years greater than 999 are interpreted as being the actual year, +rather than the offset from 1900. Thus, 1964 would indicate the year +Martin Luther King won the Nobel prize, not the year 3864. + +=item * + +Years in the range 100..999 are interpreted as offset from 1900, +so that 112 indicates 2012. This rule also applies to years less than zero +(but see note below regarding date range). + +=item * + +Years in the range 0..99 are interpreted as shorthand for years in the +rolling "current century," defined as 50 years on either side of the current +year. Thus, today, in 1999, 0 would refer to 2000, and 45 to 2045, +but 55 would refer to 1955. Twenty years from now, 55 would instead refer +to 2055. This is messy, but matches the way people currently think about +two digit dates. Whenever possible, use an absolute four digit year instead. + +=back + +The scheme above allows interpretation of a wide range of dates, particularly +if 4-digit years are used. + +Please note, however, that the range of dates that can be actually be handled +depends on the size of an integer (time_t) on a given platform. +Currently, this is 32 bits for most systems, yielding an approximate range +from Dec 1901 to Jan 2038. + +Both timelocal() and timegm() croak if given dates outside the supported +range. + +=head2 Ambiguous Local Times (DST) + +Because of DST changes, there are many time zones where the same local +time occurs for two different GMT times on the same day. For example, +in the "Europe/Paris" time zone, the local time of 2001-10-28 02:30:00 +can represent either 2001-10-28 00:30:00 GMT, B<or> 2001-10-28 +01:30:00 GMT. + +When given an ambiguous local time, the timelocal() function should +always return the epoch for the I<earlier> of the two possible GMT +times. + +=head2 Non-Existent Local Times (DST) + +When a DST change causes a locale clock to skip one hour forward, +there will be an hour's worth of local times that don't exist. Again, +for the "Europe/Paris" time zone, the local clock jumped from +2001-03-25 01:59:59 to 2001-03-25 03:00:00. + +If the timelocal() function is given a non-existent local time, it +will simply return an epoch value for the time one hour later. + +=head2 Negative Epoch Values + +Negative epoch (time_t) values are not officially supported by the +POSIX standards, so this module's tests do not test them. On some +systems, they are known not to work. These include MacOS (pre-OSX) +and Win32. + +On systems which do support negative epoch values, this module should +be able to cope with dates before the start of the epoch, down the +minimum value of time_t for the system. + +=head1 IMPLEMENTATION + +These routines are quite efficient and yet are always guaranteed to agree +with localtime() and gmtime(). We manage this by caching the start times +of any months we've seen before. If we know the start time of the month, +we can always calculate any time within the month. The start times +are calculated using a mathematical formula. Unlike other algorithms +that do multiple calls to gmtime(). + +timelocal() is implemented using the same cache. We just assume that we're +translating a GMT time, and then fudge it when we're done for the timezone +and daylight savings arguments. Note that the timezone is evaluated for +each date because countries occasionally change their official timezones. +Assuming that localtime() corrects for these changes, this routine will +also be correct. + +=head1 BUGS + +The whole scheme for interpreting two-digit years can be considered a bug. + +=head1 SUPPORT + +Support for this module is provided via the datetime@perl.org +email list. See http://lists.perl.org/ for more details. + +Please submit bugs using the RT system at rt.cpan.org, or as a last +resort, to the datetime@perl.org list. + +=head1 AUTHOR + +This module is based on a Perl 4 library, timelocal.pl, that was +included with Perl 4.036, and was most likely written by Tom +Christiansen. + +The current version was written by Graham Barr. + +It is now being maintained separately from the Perl core by Dave +Rolsky, <autarch@urth.org>. + +=cut + diff --git a/Master/tlpkg/tlperl/lib/Time/gmtime.pm b/Master/tlpkg/tlperl/lib/Time/gmtime.pm new file mode 100644 index 00000000000..4e1359b36d9 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Time/gmtime.pm @@ -0,0 +1,90 @@ +package Time::gmtime; +use strict; +use 5.006_001; + +use Time::tm; + +our(@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION); +BEGIN { + use Exporter (); + @ISA = qw(Exporter Time::tm); + @EXPORT = qw(gmtime gmctime); + @EXPORT_OK = qw( + $tm_sec $tm_min $tm_hour $tm_mday + $tm_mon $tm_year $tm_wday $tm_yday + $tm_isdst + ); + %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); + $VERSION = 1.02; +} +use vars @EXPORT_OK; + +sub populate (@) { + return unless @_; + my $tmob = Time::tm->new(); + @$tmob = ( + $tm_sec, $tm_min, $tm_hour, $tm_mday, + $tm_mon, $tm_year, $tm_wday, $tm_yday, + $tm_isdst ) + = @_; + return $tmob; +} + +sub gmtime (;$) { populate CORE::gmtime(@_ ? shift : time)} +sub gmctime (;$) { scalar CORE::gmtime(@_ ? shift : time)} + +1; +__END__ + +=head1 NAME + +Time::gmtime - by-name interface to Perl's built-in gmtime() function + +=head1 SYNOPSIS + + use Time::gmtime; + $gm = gmtime(); + printf "The day in Greenwich is %s\n", + (qw(Sun Mon Tue Wed Thu Fri Sat Sun))[ gm->wday() ]; + + use Time::gmtime w(:FIELDS; + printf "The day in Greenwich is %s\n", + (qw(Sun Mon Tue Wed Thu Fri Sat Sun))[ gm_wday() ]; + + $now = gmctime(); + + use Time::gmtime; + use File::stat; + $date_string = gmctime(stat($file)->mtime); + +=head1 DESCRIPTION + +This module's default exports override the core gmtime() function, +replacing it with a version that returns "Time::tm" objects. +This object has methods that return the similarly named structure field +name from the C's tm structure from F<time.h>; namely sec, min, hour, +mday, mon, year, wday, yday, and isdst. + +You may also import all the structure fields directly into your namespace +as regular variables using the :FIELDS import tag. (Note that this +still overrides your core functions.) Access these fields as variables +named with a preceding C<tm_> in front their method names. Thus, +C<$tm_obj-E<gt>mday()> corresponds to $tm_mday if you import the fields. + +The gmctime() function provides a way of getting at the +scalar sense of the original CORE::gmtime() function. + +To access this functionality without the core overrides, +pass the C<use> an empty import list, and then access +function functions with their full qualified names. +On the other hand, the built-ins are still available +via the C<CORE::> pseudo-package. + +=head1 NOTE + +While this class is currently implemented using the Class::Struct +module to build a struct-like class, you shouldn't rely upon this. + +=head1 AUTHOR + +Tom Christiansen diff --git a/Master/tlpkg/tlperl/lib/Time/localtime.pm b/Master/tlpkg/tlperl/lib/Time/localtime.pm new file mode 100644 index 00000000000..c3d9fb36085 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Time/localtime.pm @@ -0,0 +1,86 @@ +package Time::localtime; +use strict; +use 5.006_001; + +use Time::tm; + +our(@ISA, @EXPORT, @EXPORT_OK, %EXPORT_TAGS, $VERSION); +BEGIN { + use Exporter (); + @ISA = qw(Exporter Time::tm); + @EXPORT = qw(localtime ctime); + @EXPORT_OK = qw( + $tm_sec $tm_min $tm_hour $tm_mday + $tm_mon $tm_year $tm_wday $tm_yday + $tm_isdst + ); + %EXPORT_TAGS = ( FIELDS => [ @EXPORT_OK, @EXPORT ] ); + $VERSION = 1.02; +} +use vars @EXPORT_OK; + +sub populate (@) { + return unless @_; + my $tmob = Time::tm->new(); + @$tmob = ( + $tm_sec, $tm_min, $tm_hour, $tm_mday, + $tm_mon, $tm_year, $tm_wday, $tm_yday, + $tm_isdst ) + = @_; + return $tmob; +} + +sub localtime (;$) { populate CORE::localtime(@_ ? shift : time)} +sub ctime (;$) { scalar CORE::localtime(@_ ? shift : time) } + +1; + +__END__ + +=head1 NAME + +Time::localtime - by-name interface to Perl's built-in localtime() function + +=head1 SYNOPSIS + + use Time::localtime; + printf "Year is %d\n", localtime->year() + 1900; + + $now = ctime(); + + use Time::localtime; + use File::stat; + $date_string = ctime(stat($file)->mtime); + +=head1 DESCRIPTION + +This module's default exports override the core localtime() function, +replacing it with a version that returns "Time::tm" objects. +This object has methods that return the similarly named structure field +name from the C's tm structure from F<time.h>; namely sec, min, hour, +mday, mon, year, wday, yday, and isdst. + +You may also import all the structure fields directly into your namespace +as regular variables using the :FIELDS import tag. (Note that this still +overrides your core functions.) Access these fields as +variables named with a preceding C<tm_> in front their method names. +Thus, C<$tm_obj-E<gt>mday()> corresponds to $tm_mday if you import +the fields. + +The ctime() function provides a way of getting at the +scalar sense of the original CORE::localtime() function. + +To access this functionality without the core overrides, +pass the C<use> an empty import list, and then access +function functions with their full qualified names. +On the other hand, the built-ins are still available +via the C<CORE::> pseudo-package. + +=head1 NOTE + +While this class is currently implemented using the Class::Struct +module to build a struct-like class, you shouldn't rely upon this. + +=head1 AUTHOR + +Tom Christiansen diff --git a/Master/tlpkg/tlperl/lib/Time/tm.pm b/Master/tlpkg/tlperl/lib/Time/tm.pm new file mode 100644 index 00000000000..2c308ebb411 --- /dev/null +++ b/Master/tlpkg/tlperl/lib/Time/tm.pm @@ -0,0 +1,33 @@ +package Time::tm; +use strict; + +our $VERSION = '1.00'; + +use Class::Struct qw(struct); +struct('Time::tm' => [ + map { $_ => '$' } qw{ sec min hour mday mon year wday yday isdst } +]); + +1; +__END__ + +=head1 NAME + +Time::tm - internal object used by Time::gmtime and Time::localtime + +=head1 SYNOPSIS + +Don't use this module directly. + +=head1 DESCRIPTION + +This module is used internally as a base class by Time::localtime And +Time::gmtime functions. It creates a Time::tm struct object which is +addressable just like's C's tm structure from F<time.h>; namely with sec, +min, hour, mday, mon, year, wday, yday, and isdst. + +This class is an internal interface only. + +=head1 AUTHOR + +Tom Christiansen |