02-10-2010
Quote:
Originally Posted by
jim mcnamara
Basically you need to convert the date to Julian Days for a date range or convert date/time to epoch seconds. You can do everything with epoch seconds, even though it is a tad longer. I use seconds.
Do you have perl or do you need a C example? You can do Julian Day arithmetic in shell, but that doesn't solve the date/time issue.
Please provide a perl example
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LEARN ABOUT DEBIAN
email::date
Email::Date(3pm) User Contributed Perl Documentation Email::Date(3pm)
NAME
Email::Date - Find and Format Date Headers
SYNOPSIS
use Email::Date;
my $email = join '', <>;
my $date = find_date($email);
print $date->ymd;
my $header = format_date($date->epoch);
Email::Simple->create(
header => [
Date => $header,
],
body => '...',
);
DESCRIPTION
RFC 2822 defines the "Date:" header. It declares the header a required part of an email message. The syntax for date headers is clearly
laid out. Stil, even a perfectly planned world has storms. The truth is, many programs get it wrong. Very wrong. Or, they don't include a
"Date:" header at all. This often forces you to look elsewhere for the date, and hoping to find something.
For this reason, the tedious process of looking for a valid date has been encapsulated in this software. Further, the process of creating
RFC compliant date strings is also found in this software.
FUNCTIONS
find_date
my $time_piece = find_date $email;
"find_date" accepts an email message in any format Email::Abstract can understand. It looks through the email message and finds a date,
converting it to a Time::Piece object.
If it can't find a date, it returns false.
"find_date" is exported by default.
format_date
my $date = format_date; # now
my $date = format_date( time - 60*60 ); # one hour ago
"format_date" accepts an epoch value, such as the one returned by "time". It returns a string representing the date and time of the
input, as specified in RFC 2822. If no input value is provided, the current value of "time" is used.
"format_date" is exported by default.
format_gmdate
my $date = format_gmdate;
"format_gmdate" is identical to "format_date", but it will return a string indicating the time in Greenwich Mean Time, rather than
local time.
"format_gmdate" is exported on demand, but not by default.
PERL EMAIL PROJECT
This module is maintained by the Perl Email Project
<http://emailproject.perl.org/wiki/Email::Date>
SEE ALSO
Email::Abstract, Time::Piece, Date::Parse, perl.
AUTHOR
Casey West, <casey@geeknest.com>.
Ricardo SIGNES, <rjbs@cpan.org>.
COPYRIGHT
Copyright (c) 2004 Casey West. All rights reserved.
This module is free software; you can redistribute it and/or modify it
under the same terms as Perl itself.
perl v5.10.1 2007-12-01 Email::Date(3pm)