| -----Original Message-----
| From: Kirill Churin
|
| Hello! i'm trying to use areasearch/areaoverlay suite from
| docbook-trunk/imagecon.
|
| Areasearch works fine and provides <areas>, but when I run
| areaoverlay on my XML it says: "Can't parse callout data".
This is a little strange. With Perl 5.10, the areaoverlay script works for
me. But with Perl 5.12, I get that same error message. The problem is in
this snippet from the makeOverlay subroutine:
while (@coords) {
while (split(/\s+/, shift @coords)) {
my $conumber = shift || die "Can't parse callout data.\n";
my $llcorner = shift || die "Can't parse callout data.\n";
my $urcorner = shift || die "Can't parse callout data.\n";
I was able to make it work by changing the above to
while (@coords) {
my @tmp = (split(/\s+/, shift @coords));
while (@tmp) {
my $conumber = shift @tmp || die "Can't parse callout data.\n";
my $llcorner = shift @tmp || die "Can't parse callout data.\n";
my $urcorner = shift @tmp || die "Can't parse callout data.\n";
The 5.12 behaviour makes sense IMHO (see
http://perldoc.perl.org/functions/shift.html). Without an ARRAY argument,
the shift function returns the first element of @_, which is the wrong
array.
Mauritz
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