added hash_filter to to_hash [0.23]

[Biblio-Isis] / lib / Biblio / Isis.pm

diff --git a/lib/Biblio/Isis.pm b/lib/Biblio/Isis.pm
index 405c47f..f310501 100644 (file)
--- a/lib/Biblio/Isis.pm
+++ b/lib/Biblio/Isis.pm
@@ -7,7 +7,7 @@ use File::Glob qw(:globally :nocase);
 BEGIN {
        use Exporter ();
        use vars qw ($VERSION @ISA @EXPORT @EXPORT_OK %EXPORT_TAGS);
-       $VERSION     = 0.22;
+       $VERSION     = 0.23;
        @ISA         = qw (Exporter);
        #Give a hoot don't pollute, do not export more than needed by default
        @EXPORT      = qw ();
@@ -548,6 +548,10 @@ have original record subfield order and index to that subfield like this:
 Define delimiter which will be used to join repeatable subfields. You can
 specify option here instead in L</new> if you want to have per-record control.
 
+=item hash_filter
+
+You can override C<hash_filter> defined in L</new> using this option.
+
 =back
 
 =cut
@@ -559,9 +563,12 @@ sub to_hash {
        my $mfn = shift || confess "need mfn!";
        my $arg;
 
+       my $hash_filter = $self->{hash_filter};
+
        if (ref($mfn) eq 'HASH') {
                $arg = $mfn;
                $mfn = $arg->{mfn} || confess "need mfn in arguments";
+               $hash_filter = $arg->{hash_filter} if ($arg->{hash_filter});
        }
 
        # init record to include MFN as field 000
@@ -577,10 +584,8 @@ sub to_hash {
                foreach my $l (@{$row->{$f_nr}}) {
 
                        # filter output
-                       if ($self->{'hash_filter'}) {
-                               $l = $self->{'hash_filter'}->($l, $f_nr);
-                               next unless defined($l);
-                       }
+                       $l = $hash_filter->($l, $f_nr) if ($hash_filter);
+                       next unless defined($l);
 
                        my $val;
                        my $r_sf;       # repeatable subfields in this record
@@ -746,13 +751,17 @@ know any details about it's version.
 As this is young module, new features are added in subsequent version. It's
 a good idea to specify version when using this module like this:
 
-  use Biblio::Isis 0.21
+  use Biblio::Isis 0.23
 
 Below is list of changes in specific version of module (so you can target
 older versions if you really have to):
 
 =over 8 
 
+=item 0.23
+
+Added C<hash_filter> to L</to_hash>
+
 =item 0.22
 
 Added field number when calling C<hash_filter>