datefmt

   1 #!/usr/bin/env perl
   2
   3 #==============================================================================
   4 # datefmt
   5 # File ID: cbb80cc6-a45e-11ea-944f-4f45262dc9b5
   6 #
   7 # Convert number of seconds to date format.
   8 #
   9 # Character set: UTF-8
  10 # ©opyleft 2020– Øyvind A. Holm <sunny@sunbase.org>
  11 # License: GNU General Public License version 2 or later, see end of file for
  12 # legal stuff.
  13 #==============================================================================
  14
  15 use strict;
  16 use warnings;
  17 use Getopt::Long;
  18
  19 local $| = 1;
  20
  21 our %Opt = (
  22
  23         'help' => 0,
  24         'quiet' => 0,
  25         'verbose' => 0,
  26         'version' => 0,
  27
  28 );
  29
  30 our $progname = $0;
  31 $progname =~ s/^.*\/(.*?)$/$1/;
  32 our $VERSION = '0.1.2';
  33
  34 Getopt::Long::Configure('bundling');
  35 GetOptions(
  36
  37         'help|h' => \$Opt{'help'},
  38         'quiet|q+' => \$Opt{'quiet'},
  39         'verbose|v+' => \$Opt{'verbose'},
  40         'version' => \$Opt{'version'},
  41
  42 ) || die("$progname: Option error. Use -h for help.\n");
  43
  44 $Opt{'verbose'} -= $Opt{'quiet'};
  45 $Opt{'help'} && usage(0);
  46 if ($Opt{'version'}) {
  47         print_version();
  48         exit(0);
  49 }
  50
  51 exit(main());
  52
  53 sub main {
  54         my $Retval = 0;
  55
  56         if (defined($ARGV[0])) {
  57                 my $i = 0;
  58                 while (defined($ARGV[$i])) {
  59                         print(parse_line($ARGV[$i]) . "\n");
  60                         $i++;
  61                 }
  62         } else {
  63                 while (my $line = <STDIN>) {
  64                         print(parse_line($line));
  65                 }
  66         }
  67         return $Retval;
  68 }
  69
  70 sub parse_line {
  71         my $l = shift;
  72         $l =~ s{
  73                 ^
  74                 (\s*)
  75                 (-?)
  76                 (\d+)
  77                 (.*?)
  78                 $
  79         }{
  80                 sprintf("%s%s%s%s", $1, $2, sec2date($3), $4)
  81         }ex;
  82         return $l;
  83 }
  84
  85 sub sec2date {
  86         my $s = shift;
  87         ($s =~ /^\d+$/) || return $s;
  88         my $ss = $s;
  89         my %secc = (
  90                 'min' => 60,
  91                 'hour' => 3600,
  92                 'day' => 86400
  93         );
  94         $secc{'year'} = $secc{'day'} * 365.25;
  95         my $retval = "";
  96         my $years = int($ss / $secc{'year'});
  97         $ss -= $years * $secc{'year'};
  98         my $days = int(($ss % $secc{'year'}) / $secc{'day'});
  99         my $hours = int(($ss % $secc{'day'}) / $secc{'hour'});
 100         my $mins = int(($ss % $secc{'hour'}) / $secc{'min'});
 101         my $secs = $ss % $secc{'min'};
 102
 103         return sprintf("%us", $secs) if ($s < $secc{'min'});
 104         return sprintf("%um:%02us", $mins, $secs) if ($s < $secc{'hour'});
 105         return sprintf("%uh:%02um:%02us",
 106                        $hours, $mins, $secs) if ($s < $secc{'day'});
 107         return sprintf("%ud:%02uh:%02um:%02us",
 108                        $days, $hours, $mins, $secs) if ($s < $secc{'year'});
 109         return sprintf("%uy:%ud:%02uh:%02um:%02us",
 110                        $years, $days, $hours, $mins, $secs);
 111 }
 112
 113 sub print_version {
 114         # Print program version
 115         print("$progname $VERSION\n");
 116         return;
 117 }
 118
 119 sub usage {
 120         # Send the help message to stdout
 121         my $Retval = shift;
 122
 123         if ($Opt{'verbose'}) {
 124                 print("\n");
 125                 print_version();
 126         }
 127         print(<<"END");
 128
 129 Convert number of seconds to date format. If no arguments are specified,
 130 read from stdin.
 131
 132 Usage: $progname [options] [seconds [...]]
 133
 134 Options:
 135
 136   -h, --help
 137     Show this help.
 138   -q, --quiet
 139     Be more quiet. Can be repeated to increase silence.
 140   -v, --verbose
 141     Increase level of verbosity. Can be repeated.
 142   --version
 143     Print version information.
 144
 145 END
 146         exit($Retval);
 147 }
 148
 149 sub msg {
 150         # Print a status message to stderr based on verbosity level
 151         my ($verbose_level, $Txt) = @_;
 152
 153         if ($Opt{'verbose'} >= $verbose_level) {
 154                 print(STDERR "$progname: $Txt\n");
 155         }
 156         return;
 157 }
 158
 159 __END__
 160
 161 # This program is free software; you can redistribute it and/or modify it under
 162 # the terms of the GNU General Public License as published by the Free Software
 163 # Foundation; either version 2 of the License, or (at your option) any later
 164 # version.
 165 #
 166 # This program is distributed in the hope that it will be useful, but WITHOUT
 167 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
 168 # FOR A PARTICULAR PURPOSE.
 169 # See the GNU General Public License for more details.
 170 #
 171 # You should have received a copy of the GNU General Public License along with
 172 # this program.
 173 # If not, see L<http://www.gnu.org/licenses/>.
 174
 175 # vim: set ts=8 sw=8 sts=8 noet fo+=w tw=79 fenc=UTF-8 :