85 lines
3.6 KiB
Plaintext
85 lines
3.6 KiB
Plaintext
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#------------------------------------------------------------------------------
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# File: age.config
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#
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# Description: Definition for a Composite "Age" tag to calculate age of person
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# in image based on their birthday and the DateTimeOriginal or
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# CreateDate of the image.
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#
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# Notes: The birthday date is set via the -userParam option, and is a
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# string containing year, month, day, hour, minute and second.
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# Only the year is required. By default the format of the
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# returned Age value is exactly the same as the input birthday,
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# with 2 digits for each parameter, however an AgeFormat user
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# parameter may be used to define a printf-style format string
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# for any desired output format (see fourth example below).
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#
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# If the specified birthday comes after the image date/time
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# then the returned result is enclosed in brackets to indicate
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# a negative time difference (see last example below).
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#
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# If birthday is not given, then the current date/time is assumed
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# (in which case Age returns the age of the photo).
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#
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# Examples: (based on a DateTimeOriginal of "2005:08:27 18:21:00")
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#
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# > exiftool -config age.config -userparam birthday=1990:09:31 -age a.jpg
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# Age : 14:10:26
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#
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# > exiftool -config age.config -userparam birthday=1990Y09M31D -age a.jpg
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# Age : 14Y10M26D
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#
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# > exiftool -config age.config -userparam birthday="2000:01:02 03:45" -age a.jpg
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# Age : 05:07:25 14:36
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#
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# > exiftool -config age.config -userparam birthday=2000:01:02 \
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# -userparam ageformat="%d years" -age a.jpg
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# Age : 5 years
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#
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# > exiftool -config age.config -userparam birthday=2005:09:26 -age a.jpg
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# Age : (00:00:30)
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#
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# Requires: ExifTool version 9.90 or later
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#
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# Revisions: 2017/01/24 - P. Harvey Created
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#------------------------------------------------------------------------------
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%Image::ExifTool::UserDefined = (
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'Image::ExifTool::Composite' => {
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Age => {
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Desire => {
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0 => 'DateTimeOriginal',
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1 => 'CreateDate',
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},
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ValueConv => q{
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my $bday = $self->Options(UserParam => 'Birthday');
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$bday or ($bday = TimeNow()) =~ s/[-+].*//;
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my $date = $val[0] || $val[1] or return undef;
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my @t0 = ($bday =~ /\d+/g);
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my @t1 = ($date =~ /\d+/g);
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return '<invalid birthday date>' unless $t0[0];
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my ($i, @diff, $sign);
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for ($i=0; $i<6; ++$i) {
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last unless defined $t0[$i];
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my $dt = $t1[$i] - $t0[$i];
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$sign or $sign = ($dt <=> 0);
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push @diff, $dt * $sign;
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}
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require 'Image/ExifTool/Shift.pl';
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my $base = $sign < 0 ? \@t1 : \@t0;
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my @wrap = (0, 12, DaysInMonth($$base[1]||1,$$base[0]), 24, 60, 60);
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for ($i=$#diff; $i>0; --$i) {
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$diff[$i] < 0 and $diff[$i] += $wrap[$i], --$diff[$i-1];
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}
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$bday =~ s/\d+/sprintf '%.2d', shift @diff/ge;
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return $sign < 0 ? "($bday)" : $bday;
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},
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PrintConv => q{
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my $fmt = $self->Options(UserParam => 'AgeFormat') or return $val;
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sprintf($fmt, $val =~ /\d+/g);
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},
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},
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},
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);
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1; #end
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