#!/usr/bin/perl
+# $Id$
+
+# Recursively create image gallery index and slideshow wrappings.
+# Makes use of (slightly modified) "lightbox" Javascript/CSS as published
+# at http://www.huddletogether.com/projects/lightbox/
+
+# Copyright (c) 2006 Eugene G. Crosser
+
+# This software is provided 'as-is', without any express or implied
+# warranty. In no event will the authors be held liable for any damages
+# arising from the use of this software.
+#
+# Permission is granted to anyone to use this software for any purpose,
+# including commercial applications, and to alter it and redistribute it
+# freely, subject to the following restrictions:
+#
+# 1. The origin of this software must not be misrepresented; you must not
+# claim that you wrote the original software. If you use this software
+# in a product, an acknowledgment in the product documentation would be
+# appreciated but is not required.
+# 2. Altered source versions must be plainly marked as such, and must not be
+# misrepresented as being the original software.
+# 3. This notice may not be removed or altered from any source distribution.
+
+package FsObj;
+
use strict;
use Carp;
use POSIX qw/getcwd/;
-use CGI qw/:html *table *center *div/;
+use CGI qw/:html *table *Tr *center *div/;
use Image::Info qw/image_info dim/;
+use Term::ReadLine;
+use Getopt::Long;
+
use Image::Magick;
-my $ask=1;
-my $startdir=getcwd;
+my @sizes = (160, 640);
######################################################################
-&processdir($startdir);
+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 $self;
+}
-sub processdir {
- my ($start,$dir)=@_;
- my $dn=$start;
- $dn .= "/".$dir if ($dir);
- unless ( -d $dn ) {
- warn "not a directory: $dn";
- return;
+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,$dn)) {
- warn "cannot opendir $dn: $!";
+ unless (opendir($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);
-# recurse into subdirectories BEFORE opening index file
+# 1. first of all, fill title for this directory and create hidden subdirs
- &iteratedir($D,$start,$dir,sub {
- my ($start,$dir,$base)=@_;
- my $ndir = $dir;
- $ndir .= "/" if ($ndir);
- $ndir .= $base;
- return unless ( -d $start."/".$ndir );
- &processdir($start,$ndir);
- });
+ $self->initdir;
-# fill in title
+# 2. recurse into subdirectories to get their titles filled
+# before we start writing out subalbum list
- my $title=&gettitle($dn,$dir);
+ foreach my $dir(@dirlist) {
+ $dir->iterate;
+ }
-# get include prefix
+# 3. iterate through images to build cross-links,
- my $inc=&getinclude($dn);
+ 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;
+ }
-# generate directory index unless suppressed
+# 4. create scaled versions and aux html pages
- if ( -e $dn."/.noindex" ) {
- open(STDOUT,">/dev/null");
- } else {
- open(STDOUT,">".$dn."/index.html");
+ 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;
}
-# write HTML header
+# 5. start building index.html for the directory
- print start_html(-title => $title,
- -style=>{-src=>[$inc."gallery.css",
- $inc."lightbox.css"]},
- -script=>[{-code=>"var incPrefix='$inc';"},
- {-src=>$inc."gallery.js"},
- {-src=>$inc."lightbox.js"}]),"\n";
- print a({-href=>"../"},"UP");
- print start_center,"\n";
- print h1($title),"\n";
-
-# create list of sub-albums
-
- my $hassubdirs=0;
- &iteratedir($D,$start,$dir,sub {
- my ($start,$dir,$base)=@_;
- my $en=sprintf("%s/%s/%s",$start,$dir,$base);
- return unless ( -d $en );
- unless ($hassubdirs) {
- print hr,h2("Albums"),start_table,"\n";
- $hassubdirs=1;
- }
- &subalbum($base,&gettitle($en,$dir."/".$base));
- });
- print end_table,hr,"\n" if ($hassubdirs);
-
-# create picture gallery
-
- my @piclist=();
- my @infolist=();
-
- my $haspics=0;
- &iteratedir($D,$start,$dir,sub {
- my ($start,$dir,$base)=@_;
- my $en=sprintf("%s/%s/%s",$start,$dir,$base);
- return unless ( -f $en );
- my $info = image_info($en);
- if (my $error = $info->{error}) {
- if (($error !~ "Unrecognized file format") &&
- ($error !~ "Can't read head")) {
- print STDERR "File \"$en\": $error\n";
- }
- return;
- }
- if (&processfile($start,$dir,$base,$en,$info)) {
- $haspics=1;
- push(@piclist,$base);
- push(@infolist,$info);
- }
- });
+ $self->startindex;
-# write HTML footer
+# 6. iterate through subdirectories to build subalbums list
- print br({-clear=>"all"}),"\n";
- print hr,"\n" if ($haspics);
- print end_center,"\n";
- print end_html,"\n";
+ if (@dirlist) {
+ $self->startsublist;
+ foreach my $dir(@dirlist) {
+ $dir->sub_entry;
+ }
+ $self->endsublist;
+ }
- close(STDOUT);
- closedir($D);
+# 7. iterate through images to build thumb list
-# generate html files for slideshow from @piclist
-
- for (my $i=0;$i<=$#piclist;$i++) {
- my $base=$piclist[$i];
- my $pbase;
- my $nbase;
- $pbase=$piclist[$i-1] if ($i>0);
- $nbase=$piclist[$i+1] if ($i<$#piclist);
- for my $refresh('static','slide') {
- &mkauxfile($start,$dir,$pbase,$base,$nbase,
- $refresh,$infolist[$i]);
+ 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;
}
-#############################################################
-# helper functions
-#############################################################
+sub isdir {
+ my $self = shift;
+ return ( -d $self->{-fullpath} );
+}
-sub iteratedir {
- my ($D,$start,$dir,$prog)=@_;
- my @list=();
- while (my $de=readdir($D)) {
- next if ($de =~ /^\./);
- push(@list,$de);
- }
- foreach my $de(sort @list) {
- &$prog($start,$dir,$de);
+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\": $error\n";
+ }
+ return 0;
}
- rewinddir($D);
+ $self->{-isimg} = 1;
+ $self->{-info} = $info;
+ return 1;
}
-sub getinclude {
- my ($dn)=@_;
+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;
+}
- my $depth=20;
- my $str="";
- #print STDERR "start include ",$dn."/".$str.".include","\n";
- while ( ! -d $dn."/".$str.".include" ) {
- #print STDERR "not include ",$dn."/".$str.".include","\n";
- $str.="../";
- last unless ($depth--);
+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($T);
}
- #print STDERR "end include ",$dn."/".$str.".include","\n";
- if ( -d $dn."/".$str.".include" ) {
- #print STDERR "return include ".$str.".include/".$fn,"\n";
- return $str.".include/";
- } else {
- return ""; # won't work anyway but return something
+ if ($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 gettitle {
- my ($dir,$dflt)=@_;
+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
+}
- my $F;
- my $str;
- if (open($F,"<".$dir."/.title")) {
- $str=<$F>;
- chop $str;
- close($F);
- } else {
- print STDERR "enter title for $dir\n";
- $str=<>;
- if ($str =~ /^\s*$/) {
- $str=$dflt;
+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 $imgsrc = '../'.$self->{$sizes[1]};
+ 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 {
+ $bakref = '../index.html';
}
- if (open($F,">".$dir."/.title")) {
- print $F $str,"\n";
- close($F);
+ my $toggleref;
+ my $toggletext;
+ if ($refresh eq 'slide') {
+ $toggleref=sprintf("%s-static.html",$name);
+ $toggletext = 'Stop!';
} else {
- print STDERR "cant open .title in $dir for writing: $!";
+ $toggleref=sprintf("%s-slide.html",$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),"\n",
+ start_table({-class=>'navi'}),start_Tr,"\n",
+ td(a({-href=>"../index.html"},"Index")),"\n",
+ td(a({-href=>$bakref},"<<Prev")),"\n",
+ td(a({-href=>$toggleref},$toggletext)),"\n",
+ td(a({-href=>$fwdref},"Next>>")),"\n",
+ end_Tr,
+ end_table,"\n",
+ table({-class=>'picframe'},
+ Tr(td(img({-src=>$imgsrc})))),"\n",
+ end_center,"\n",
+ end_html,"\n";
+ close($F);
}
- return $str;
+ my $fn = sprintf("%s/.html/%s-info.html",$dn,$name);
+ my $F;
+ unless (open($F,'>'.$fn)) {
+ warn "cannot open \"$fn\": $!";
+ return;
+ }
+
+ # info html
+ my $imgsrc = sprintf("../.%s/%s",$sizes[0],$name);
+ print $F start_html(-title=>$title,
+ -style=>{-src=>$inc."gallery.css"},),"\n",
+ start_center,"\n",
+ h1($title),"\n",
+ table({-class=>'ipage'},Tr(td(img({-src=>$imgsrc})),td($self->infotable))),
+ a({-href=>'../index.html'},'Index'),"\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;
+
+ my $inc = $self->{-inc};
+ my $title = $self->{-title};
+ print $IND start_html(-title => $title,
+ -style=>{-src=>[$inc."gallery.css",
+ $inc."lightbox.css"]},
+ -script=>[{-code=>"var incPrefix='$inc';"},
+ {-src=>$inc."gallery.js"},
+ {-src=>$inc."lightbox.js"}]),
+ a({-href=>"../index.html"},"UP"),"\n",
+ start_center,"\n",
+ h1($title),"\n",
+ "\n";
+}
+
+sub endindex {
+ my $self = shift;
+ my $IND = $self->{-IND};
+
+ print $IND end_center,end_html,"\n";
+
+ close($IND) if ($IND);
+ undef $self->{-IND};
+}
+
+sub startsublist {
+ my $self = shift;
+ my $IND = $self->{-IND};
+
+ print $IND h2("Albums"),"\n",start_table,"\n";
+}
+
+sub sub_entry {
+ my $self = shift;
+ my $IND = $self->{-parent}->{-IND};
+ my $name = $self->{-base};
+ my $title = $self->{-title};
+
+ print $IND Tr(td(a({-href=>$name.'/index.html'},$name)),
+ td(a({-href=>$name.'/index.html'},$title))),"\n";
+}
+
+sub endsublist {
+ my $self = shift;
+ my $IND = $self->{-IND};
+
+ print $IND end_table,"\n",br({-clear=>'all'}),hr,"\n\n";
}
-sub subalbum {
- my ($base,$title)=@_;
+sub startimglist {
+ my $self = shift;
+ my $IND = $self->{-IND};
+ my $first = $self->{-firstimg}->{-base};
+ my $slideref = sprintf(".html/%s-slide.html",$first);
- print Tr({-bgcolor=>"#c0c0c0"},
- td(a({-href=>$base."/"},$base)),
- td(a({-href=>$base."/"},$title))),"\n";
+ print $IND h2("Images"),"\n",
+ a({-href=>$slideref},'Slideshow'),
+ "\n";
}
-sub processfile {
- my ($start,$dir,$base,$fn,$info)=@_;
-
- my ($w,$h) = dim($info);
- my $title=$info->{'Comment'};
- $title=$base unless ($title);
- my $thumb=&scale($start,$dir,$base,$fn,160,$info);
- my $medium=&scale($start,$dir,$base,$fn,640,$info);
- print &infobox($info,$base,$fn),"\n";
- print table({-class=>'slide'},Tr(td(
- a({-href=>".html/$base-info.html",
- -onClick=>"return showIbox('$base');"},$title),
+sub img_entry {
+ my $self = shift;
+ my $IND = $self->{-parent}->{-IND};
+ my $name = $self->{-base};
+ my $title = $self->{-info}->{'Comment'};
+ $title = $name unless ($title);
+ my $thumb = $self->{$sizes[0]};
+ my $medium = $self->{$sizes[1]};
+ my $info = $self->{-info};
+ my ($w, $h) = dim($info);
+
+ print $IND start_div({-class=>'ibox',-id=>$name,
+ -OnClick=>"HideIbox('$name');"}),"\n",
+ start_div({-class=>'iboxtitle'}),
+ span({-style=>'float: left;'},b("Info for $name")),
+ span({-style=>'float: right;'},
+ a({-href=>"#",-OnClick=>"HideIbox('$name');"},"Close")),
+ br({-clear=>'all'}),"\n",
+ end_div,"\n",
+ $self->infotable,
+ end_div,"\n";
+
+ print $IND table({-class=>'slide'},Tr(td(
+ a({-href=>".html/$name-info.html",
+ -onClick=>"return showIbox('$name');"},$title),
br,
a({-href=>$medium,-rel=>"lightbox",-title=>$title},
img({-src=>$thumb})),
br,
- a({-href=>$base},"($w x $h)"),
+ a({-href=>$name},"($w x $h)"),
br))),"\n";
- return 1;
}
-sub infobox {
- my ($info,$base,$fn)=@_;
+sub endimglist {
+ my $self = shift;
+ my $IND = $self->{-IND};
+
+ print $IND br({-clear=>'all'}),hr,"\n\n";
+}
+
+sub infotable {
+ my $self = shift;
+ my $info = $self->{-info};
+ my $msg='';
my @infokeys=(
'DateTime',
'Model',
'Software',
);
-
- my $msg=start_div({-class=>'ibox',-id=>$base,-OnClick=>"HideIbox('$base');"});
- $msg.=span({-style=>'float: left;'},"Info for $base").
- span({-style=>'float: right;'},
- a({-href=>"#",-OnClick=>"HideIbox('$base');"},"Close"));
- $msg.=br({-clear=>'all'});
- $msg.=start_table;
+ $msg.=start_table({-class=>'infotable'})."\n";
foreach my $k(@infokeys) {
- $msg.=Tr(td($k.":"),td($info->{$k}));
- }
- $msg.=end_table;
- $msg.=end_div;
- return $msg;
-}
-
-sub mkauxfile {
- my ($start,$dir,$pbase,$base,$nbase,$refresh,$info) =@_;
- my $en=sprintf("%s/%s/.html/%s-%s.html",$start,$dir,$base,$refresh);
- my $pref;
- my $nref;
- if ($pbase) {
- $pref=sprintf("%s-%s.html",$pbase,$refresh);
- } else {
- $pref="../";
- }
- if ($nbase) {
- $nref=sprintf("%s-%s.html",$nbase,$refresh);
- } else {
- $nref="../";
- }
-
- my $tdir=sprintf "%s/%s/.html",$start,$dir;
- mkdir($tdir,0755) unless ( -d $tdir );
-
- unless (open(STDOUT,">".$en)) {
- warn "cannot open $en: $!";
- return;
- }
- my $title=$info->{'Comment'};
- $title=$base unless ($title);
- if ($refresh eq 'slide') {
- print start_html(-title=>$title,
- -head=>meta({-http_equiv=>'Refresh',
- -content=>"3; url=$nref"})),"\n";
- } else {
- print start_html(-title=>$title),"\n";
+ $msg.=Tr(td($k.":"),td($info->{$k}))."\n" if ($info->{$k});
}
- print img({-src=>"../.640/".$base});
- print end_html,"\n";
- close(STDOUT);
-}
-
-sub scale {
- my ($start,$dir,$base,$fn,$tsize,$info)=@_;
- my ($w,$h) = dim($info);
- my $max=($w>$h)?$w:$h;
- my $factor=$tsize/$max;
-
- return $base if ($factor >= 1);
-
- my $tdir=sprintf "%s/%s/.%s",$start,$dir,$tsize;
- mkdir($tdir,0755) unless ( -d $tdir );
- my $tbase=sprintf ".%s/%s",$tsize,$base;
- my $tfn=sprintf "%s/%s",$tdir,$base;
- my @sstat=stat($fn);
- my @tstat=stat($tfn);
- return $tbase if (@tstat && ($sstat[9] < $tstat[9])); # [9] -> mtime
-
- print STDERR "scale by $factor from $fn to $tfn\n";
- &doscaling($fn,$tfn,$factor,$w,$h);
- return $tbase;
+ $msg.=end_table."\n";
}
-sub doscaling {
- my ($src,$dest,$factor,$w,$h)=@_;
-
- my $im=new Image::Magick;
- my $err;
- #print STDERR "doscale $src -> $dest by $factor\n";
- $err=$im->Read($src);
- unless ($err) {
- $im->Scale(width=>$w*$factor,height=>$h*$factor);
- $err=$im->Write($dest);
- warn "ImageMagic: write \"$dest\": $err" if ($err);
- } else {
- warn "ImageMagic: read \"$src\": $err";
- system("djpeg \"$src\" | pnmscale \"$factor\" | cjpeg >\"$dest\"");
- }
- undef $im;
-}