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	'thumbsize=i'    => \$thumb,
	'title=s'        => \$album_title,

	# Miscellaneous.
	'debug'          => \$debug,
	'help|?'         => \$help,
	'ident'          => \$ident,
	'quiet'          => sub { $verbose = 0 },
	'test'           => \$test,
	'trace'          => \$trace,
	'verbose+'       => \$verbose,
        )
	 or $help
	 or @ARGV > 1
	 or @ARGV && ! -d $ARGV[0]
       )
    {
	app_usage(2);
    }

    app_ident() if $ident;
    $dest_dir = @ARGV ? shift(@ARGV) : ".";
    $dest_dir =~ s;^\./;;;
    if ( $import_dir ) {
	die("$import_dir: Not a directory\n")
	  unless -d $import_dir;
	$import_dir =~ s;^\./;;;
    }
}

sub app_ident {
    print STDERR ("This is $my_package [$my_name $my_version]\n");
}

sub app_usage {
    my ($exit) = @_;
    app_ident();
    print STDERR heredoc(<<"    EndOfUsage", 4);
    Usage: $0 [options] [ directory ]
      Album:
	--info XXX          description file, default "@{[DEFAULTS->{info}]}" (if it exists)
	--title XXX         album title, default "@{[DEFAULTS->{title}]}"
	--[no]icon          [do not] produce an album icon
      Index:
	--cols NN           number of columns per page, default @{[DEFAULTS->{indexcols}]}
	--rows NN           number of rows per page, default @{[DEFAULTS->{indexrows}]}
	--thumbsize NNN     the max size of thumbnail images, default @{[DEFAULTS->{thumbsize}]}
	--captions XXX      f: filename s: size c: description t: tag
      Medium:
	--medium            produce medium sized images of size @{[DEFAULTS->{mediumsize}]}
	--mediumsize NNN    the max size of medium sized images, default @{[DEFAULTS->{mediumsize}]}
	--mediumonly        ignore large images and links (for web export)
      Importing:
	--import XXX        original images
	--exif              use w/ EXIF info, if possible
	--dcim XXX          as --import with --exif
	--update            add new entries from import, if needed
	--[no]link          [do not] link to original, instead of copying. Default is link.
      Miscellaneous:
	--clobber           recreate everything (except large)
	--test              verify only
	--help              this message
	--ident             show identification
	--verbose           verbose information
    EndOfUsage
    exit $exit if defined $exit && $exit != 0;
}

################ Modules ################

package ImageInfo;

my @std_fields;
my @exif_fields;
my $exif_rot;

INIT {
    @std_fields  = qw(type seq next prev
		      dest_name orig_name assoc_name
		      timestamp file_size medium_size
		      tag description annotation
		      rotation mirror);

    @exif_fields = qw(DateTime ExifImageLength ExifImageWidth
		      ExposureMode ExposureProgram ExposureTime
		      FNumber Flash FocalLength ISOSpeedRatings
		      ImageDescription Make Model
		      MeteringMode SceneCaptureType Orientation
		      height width file_ext);

    $exif_rot = { top_left   => [   0, ''  ],    # 1: no corr. needed
		  top_right  => [   0, 'v' ],    # 2: flop (V)
		  bot_right  => [ 180, ''  ],    # 3: 180
		  bot_left   => [   0, 'h' ],    # 4: flip (H)
		  left_top   => [  90, 'h' ],    # 5: flip 90
		  right_top  => [  90, ''  ],    # 6: 90
		  right_bot  => [  90, 'v' ],    # 7: flop 90
		  left_bot   => [ 270, ''  ],    # 8: 270
		};
}

my $largepat;
sub basename_nolarge {
    my ($f) = @_;
    unless ( $largepat ) {
	$largepat = quotemeta(::d_large());
	$largepat = qr;^$largepat[/\\];;
    }
    $f =~ s;$largepat;;;
    $f;
}

sub new {
    my ($pkg, $file) = @_;
    $pkg = ref($pkg) if ref($pkg);

    my $self = { $file ?
		 (orig_name    => $file,
		  dest_name    => basename_nolarge($file)) : (),
		 description  => "",
		 annotation   => [],