+# Function to return size of $1 in something resembling kilobytes.
+calcsize()
+{
+ size=`ls -ksl $1 | awk '{print $1}'`
+ echo $size
+}
+
+# copy_images OUTDIR HTML-FILE...
+# -------------------------------
+# Copy all the images needed by the HTML-FILEs into OUTDIR. Look
+# for them in the -I directories.
+copy_images()
+{
+ local odir
+ odir=$1
+ shift
+ $PERL -n -e "
+BEGIN {
+ \$me = '$prog';
+ \$odir = '$odir';
+ @dirs = qw($dirs);
+}
+" -e '
+/<img src="(.*?)"/g && ++$need{$1};
+
+END {
+ #print "$me: @{[keys %need]}\n"; # for debugging, show images found.
+ FILE: for my $f (keys %need) {
+ for my $d (@dirs) {
+ if (-f "$d/$f") {
+ use File::Basename;
+ my $dest = dirname ("$odir/$f");
+ #
+ use File::Path;
+ -d $dest || mkpath ($dest)
+ || die "$me: cannot mkdir $dest: $!\n";
+ #
+ use File::Copy;
+ copy ("$d/$f", $dest)
+ || die "$me: cannot copy $d/$f to $dest: $!\n";
+ next FILE;
+ }
+ }
+ die "$me: $ARGV: cannot find image $f\n";
+ }
+}
+' -- "$@" || exit 1
+}
+