+my @sizes = (160, 640);
+
+######################################################################
+
+my $debug = 0;
+my $asktitle = 0;
+my $noasktitle = 0;
+
+GetOptions('asktitle'=>\$asktitle,
+ 'noasktitle'=>\$noasktitle,
+ 'debug'=>\$debug);
+
+my $term = new Term::ReadLine "Edit Title";
+
+FsObj->new(getcwd)->iterate;
+
+sub new {
+ my $this = shift;
+ my $class;
+ my $self;
+ if (ref($this)) {
+ $class = ref($this);
+ my $parent = $this;
+ my $name = shift;
+ my $fullpath = $parent->{-fullpath}.'/'.$name;
+ $self = {
+ -parent=>$parent,
+ -root=>$parent->{-root},
+ -base=>$name,
+ -fullpath=>$fullpath,
+ -inc=>'../'.$parent->{-inc},
+ };
+ } else {
+ $class = $this;
+ my $root=shift;
+ $self = {
+ -root=>$root,
+ -fullpath=>$root,
+ -inc=>getinc($root),
+ };
+ }
+ bless $self, $class;
+ if ($debug) {
+ print "new $class:\n";
+ foreach my $k(keys %$self) {
+ print "\t$k\t=\t$self->{$k}\n";
+ }
+ }
+ return $self;
+}
+
+sub getinc {
+ my $fullpath=shift; # this is not a method
+ my $depth=20; # arbitrary max depth
+
+ my $inc=".include";
+ while ( ! -d $fullpath."/".$inc ) {
+ $inc = "../".$inc;
+ last unless ($depth-- > 0);
+ }
+ if ($depth > 0) {
+ return $inc.'/'; # prefix with trailing slash
+ } else {
+ return 'NO-.INCLUDE-IN-PATH/'; # won't work anyway
+ }
+}
+
+sub iterate {
+ my $self = shift;
+ my $fullpath .= $self->{-fullpath};
+ print "iterate in dir $fullpath\n" if ($debug);
+
+ my @rdirlist;
+ my @rimglist;
+ my $D;
+ unless (opendir($D,$fullpath)) {
+ warn "cannot opendir $fullpath: $!";
+ return;
+ }
+ while (my $de = readdir($D)) {
+ next if ($de =~ /^\./);
+ my $child = $self->new($de);
+ if ($child->isdir) {
+ push(@rdirlist,$child);
+ } elsif ($child->isimg) {
+ push(@rimglist,$child);
+ }
+ }
+ closedir($D);
+ my @dirlist = sort {$a->{-base} cmp $b->{-base}} @rdirlist;
+ undef @rdirlist; # inplace sorting would be handy here
+ my @imglist = sort {$a->{-base} cmp $b->{-base}} @rimglist;
+ undef @rimglist; # optimize away unsorted versions
+ $self->{-firstimg} = $imglist[0];
+
+ print "Dir: $self->{-fullpath}\n" if ($debug);
+
+# 1. first of all, fill title for this directory and create hidden subdirs
+
+ $self->initdir;
+
+# 2. recurse into subdirectories to get their titles filled
+# before we start writing out subalbum list
+
+ foreach my $dir(@dirlist) {
+ $dir->iterate;
+ }
+
+# 3. iterate through images to build cross-links,
+
+ my $previmg = undef;
+ foreach my $img(@imglist) {
+ # list-linking must be done before generating
+ # aux html because aux pages rely on prev/next refs
+ if ($previmg) {
+ $previmg->{-nextimg} = $img;
+ $img->{-previmg} = $previmg;
+ }
+ $previmg=$img;
+ }
+
+# 4. create scaled versions and aux html pages
+
+ foreach my $img(@imglist) {
+ # scaled versions must be generated before aux html
+ # and main image index because they both rely on
+ # refs to scaled images and they may be just original
+ # images, this is not known before we try scaling.
+ $img->makescaled;
+ # finally, make aux html pages
+ $img->makeaux;
+ }
+
+# 5. start building index.html for the directory
+
+ $self->startindex;
+
+# 6. iterate through subdirectories to build subalbums list
+
+ if (@dirlist) {
+ $self->startsublist;
+ foreach my $dir(@dirlist) {
+ $dir->sub_entry;
+ }
+ $self->endsublist;
+ }
+
+# 7. iterate through images to build thumb list
+
+ if (@imglist) {
+ $self->startimglist;
+ foreach my $img(@imglist) {
+ print "Img: $img->{-fullpath}\n" if ($debug);
+ $img->img_entry;
+ }
+ $self->endimglist;
+ }
+
+# 8. comlplete building index.html for the directory
+
+ $self->endindex;
+}
+
+sub isdir {
+ my $self = shift;
+ return ( -d $self->{-fullpath} );
+}
+
+sub isimg {
+ my $self = shift;
+ my $fullpath = $self->{-fullpath};
+ return 0 unless ( -f $fullpath );
+ my $info = image_info($fullpath);
+ if (my $error = $info->{error}) {
+ if (($error !~ "Unrecognized file format") &&
+ ($error !~ "Can't read head")) {
+ warn "File \"$fullpath\": $error\n";
+ }
+ return 0;
+ }
+ $self->{-isimg} = 1;
+ $self->{-info} = $info;
+ return 1;
+}
+
+sub initdir {
+ my $self = shift;
+ my $fullpath = $self->{-fullpath};
+ for my $subdir(@sizes, 'html') {
+ my $tdir=sprintf "%s/.%s",$self->{-fullpath},$subdir;
+ mkdir($tdir,0755) unless ( -d $tdir );
+ }
+ $self->edittitle;
+}
+
+sub edittitle {
+ my $self = shift;
+ my $fullpath = $self->{-fullpath};
+ my $title;
+ my $T;
+ if (open($T,'<'.$fullpath.'/.title')) {
+ $title = <$T>;
+ $title =~ s/[\r\n]*$//;
+ close($T);
+ }
+ if ($asktitle || (!$title && !$noasktitle)) {
+ my $prompt = $self->{-base};
+ $prompt = '/' unless ($prompt);
+ my $OUT = $term->OUT || \*STDOUT;
+ print $OUT "Enter title for $fullpath\n";
+ $title = $term->readline($prompt.' >',$title);
+ $term->addhistory($title) if ($title);
+ if (open($T,'>'.$fullpath.'/.title')) {
+ print $T $title,"\n";
+ close($T);
+ }
+ }
+ unless ($title) {
+ $title=substr($fullpath,length($self->{-root}));
+ }
+ $self->{-title}=$title;
+ print "title in $fullpath is $title\n" if ($debug);
+}
+
+sub makescaled {
+ my $self = shift;
+ my $fn = $self->{-fullpath};
+ my $name = $self->{-base};
+ my $dn = $self->{-parent}->{-fullpath};
+ my ($w, $h) = dim($self->{-info});
+ my $max = ($w > $h)?$w:$h;
+
+ foreach my $size(@sizes) {
+ my $nref = '.'.$size.'/'.$name;
+ my $nfn = $dn.'/'.$nref;
+ my $factor=$size/$max;
+ if ($factor >= 1) {
+ $self->{$size} = $name; # unscaled version will do
+ } else {
+ $self->{$size} = $nref;
+ if (isnewer($fn,$nfn)) {
+ doscaling($fn,$nfn,$factor,$w,$h);
+ }
+ }
+ }
+}
+
+sub isnewer {
+ my ($fn1,$fn2) = @_; # this is not a method
+ my @stat1=stat($fn1);
+ my @stat2=stat($fn2);
+ return (!@stat2 || ($stat1[9] > $stat2[9]));
+ # true if $fn2 is absent or is older than $fn1
+}
+
+sub doscaling {
+ my ($src,$dest,$factor,$w,$h) = @_; # this is not a method
+ my $im = new Image::Magick;
+ my $err;
+ print "doscaling $src -> $dest by $factor\n" if ($debug);
+ $err = $im->Read($src);
+ unless ($err) {
+ $im->Scale(width=>$w*$factor,height=>$h*$factor);
+ $err=$im->Write($dest);
+ warn "ImageMagick: write \"$dest\": $err" if ($err);
+ } else { # fallback to command-line tools
+ warn "ImageMagick: read \"$src\": $err";
+ system("djpeg \"$src\" | pnmscale \"$factor\" | cjpeg >\"$dest\"");
+ }
+ undef $im;
+}
+
+sub makeaux {
+ my $self = shift;
+ my $name = $self->{-base};
+ my $dn = $self->{-parent}->{-fullpath};
+ my $pref = $self->{-previmg}->{-base};
+ my $nref = $self->{-nextimg}->{-base};
+ my $inc = $self->{-inc};
+ my $title = $self->{-info}->{'Comment'};
+ $title = $name unless ($title);
+
+ print "slide: \"$pref\"->\"$name\"->\"$nref\"\n" if ($debug);
+
+ # slideshow
+ for my $refresh('static', 'slide') {
+ my $fn = sprintf("%s/.html/%s-%s.html",$dn,$name,$refresh);
+ my $imgsrc = sprintf("../.%s/%s",$sizes[1],$name);
+ my $fwdref;
+ my $bakref;
+ if ($nref) {
+ $fwdref = sprintf("%s-%s.html",$nref,$refresh);
+ } else {
+ $fwdref = '../index.html';
+ }
+ if ($pref) {
+ $bakref = sprintf("%s-%s.html",$pref,$refresh);
+ } else {
+ $bakref = '../index.html';
+ }
+ my $toggleref;
+ my $toggletext;
+ if ($refresh eq 'slide') {
+ $toggleref=sprintf("%s-static.html",$name);
+ $toggletext = 'Stop!';
+ } else {
+ $toggleref=sprintf("%s-slide.html",$name);
+ $toggletext = 'Play->';
+ }
+ my $F;
+ unless (open($F,'>'.$fn)) {
+ warn "cannot open \"$fn\": $!";
+ next;
+ }
+ if ($refresh eq 'slide') {
+ print $F start_html(-title=>$title,
+ -bgcolor=>"#808080",
+ -head=>meta({-http_equiv=>'Refresh',
+ -content=>"3; url=$fwdref"}),
+ -style=>{-src=>$inc."gallery.css"},
+ ),"\n";
+
+ } else {
+ print $F start_html(-title=>$title,
+ -bgcolor=>"#808080",
+ -style=>{-src=>$inc."gallery.css"},
+ ),"\n";
+ }
+ print $F start_center,"\n",
+ h1($title),
+ a({-href=>"../index.html"},"Index")," | ",
+ a({-href=>$bakref},"<<Prev")," | ",
+ a({-href=>$toggleref},$toggletext)," | ",
+ a({-href=>$fwdref},"Next>>"),
+ p,
+ img({-src=>$imgsrc}),"\n",
+ end_center,"\n",
+ end_html,"\n";
+ close($F);
+ }
+}
+
+sub startindex {
+ my $self = shift;
+ my $fn = $self->{-fullpath}.'/index.html';
+ my $IND;
+ unless (open($IND,'>'.$fn)) {
+ warn "cannot open $fn: $!";
+ return;
+ }
+ $self->{-IND} = $IND;