59 |
print STDERR "# opening ",$self->{marcdb},"\n" if ($self->{debug}); |
print STDERR "# opening ",$self->{marcdb},"\n" if ($self->{debug}); |
60 |
|
|
61 |
open($self->{fh}, $self->{marcdb}) || croak "can't open ",$self->{marcdb},": $!"; |
open($self->{fh}, $self->{marcdb}) || croak "can't open ",$self->{marcdb},": $!"; |
62 |
|
binmode($self->{fh}); |
63 |
|
|
64 |
$self->{count} = 0; |
$self->{count} = 0; |
65 |
|
|
70 |
push @{$self->{fh_offset}}, tell($self->{fh}); |
push @{$self->{fh_offset}}, tell($self->{fh}); |
71 |
|
|
72 |
my $leader; |
my $leader; |
73 |
read($self->{fh}, $leader, 24); |
my $len = read($self->{fh}, $leader, 24); |
74 |
|
|
75 |
|
if ($len < 24) { |
76 |
|
carp "short read of leader, aborting\n"; |
77 |
|
last; |
78 |
|
} |
79 |
|
|
80 |
# Byte Name |
# Byte Name |
81 |
# ---- ---- |
# ---- ---- |
109 |
push @{$self->{leaders}}, $leader; |
push @{$self->{leaders}}, $leader; |
110 |
|
|
111 |
# skip to next record |
# skip to next record |
112 |
seek($self->{fh},substr($leader,0,5)-24,1); |
my $o = substr($leader,0,5); |
113 |
|
if ($o > 24) { |
114 |
|
seek($self->{fh},$o-24,1) if ($o); |
115 |
|
} else { |
116 |
|
last; |
117 |
|
} |
118 |
|
|
119 |
} |
} |
120 |
|
|
207 |
my $f = substr($fields,$addr,$len); |
my $f = substr($fields,$addr,$len); |
208 |
print STDERR "tag/len/addr $tag [$len] $addr: '$f'\n" if ($self->{debug}); |
print STDERR "tag/len/addr $tag [$len] $addr: '$f'\n" if ($self->{debug}); |
209 |
|
|
210 |
if ($row->{$tag}) { |
push @{ $row->{$tag} }, $f; |
|
$row->{$tag} .= $f; |
|
|
} else { |
|
|
$row->{$tag} = $f; |
|
|
} |
|
211 |
|
|
212 |
my $del = substr($fields,$addr+$len-1,1); |
my $del = substr($fields,$addr+$len-1,1); |
213 |
|
|
228 |
return $row; |
return $row; |
229 |
} |
} |
230 |
|
|
231 |
|
|
232 |
|
=head2 to_hash |
233 |
|
|
234 |
|
Read record with specified MFN and convert it to hash |
235 |
|
|
236 |
|
my $hash = $marc->to_hash($mfn); |
237 |
|
|
238 |
|
It has ability to convert characters (using C<hash_filter>) from MARC |
239 |
|
database before creating structures enabling character re-mapping or quick |
240 |
|
fix-up of data. |
241 |
|
|
242 |
|
This function returns hash which is like this: |
243 |
|
|
244 |
|
'200' => [ |
245 |
|
{ |
246 |
|
'i1' => '1', |
247 |
|
'i2' => ' ' |
248 |
|
'a' => 'Goa', |
249 |
|
'f' => 'Valdo D\'Arienzo', |
250 |
|
'e' => 'tipografie e tipografi nel XVI secolo', |
251 |
|
} |
252 |
|
], |
253 |
|
|
254 |
|
This method will also create additional field C<000> with MFN. |
255 |
|
|
256 |
|
=cut |
257 |
|
|
258 |
|
sub to_hash { |
259 |
|
my $self = shift; |
260 |
|
|
261 |
|
my $mfn = shift || confess "need mfn!"; |
262 |
|
|
263 |
|
# init record to include MFN as field 000 |
264 |
|
my $rec = { '000' => [ $mfn ] }; |
265 |
|
|
266 |
|
my $row = $self->fetch($mfn) || return; |
267 |
|
|
268 |
|
foreach my $k (keys %{$row}) { |
269 |
|
foreach my $l (@{$row->{$k}}) { |
270 |
|
|
271 |
|
# remove end marker |
272 |
|
$l =~ s/\x1E$//; |
273 |
|
|
274 |
|
# filter output |
275 |
|
$l = $self->{'hash_filter'}->($l) if ($self->{'hash_filter'}); |
276 |
|
|
277 |
|
my $val; |
278 |
|
|
279 |
|
# has identifiers? |
280 |
|
($val->{'i1'},$val->{'i2'}) = ($1,$2) if ($l =~ s/^([01 #])([01 #])\x1F/\x1F/); |
281 |
|
|
282 |
|
# has subfields? |
283 |
|
if ($l =~ m/\x1F/) { |
284 |
|
foreach my $t (split(/\x1F/,$l)) { |
285 |
|
next if (! $t); |
286 |
|
$val->{substr($t,0,1)} = substr($t,1); |
287 |
|
} |
288 |
|
} else { |
289 |
|
$val = $l; |
290 |
|
} |
291 |
|
|
292 |
|
push @{$rec->{$k}}, $val; |
293 |
|
} |
294 |
|
} |
295 |
|
|
296 |
|
return $rec; |
297 |
|
} |
298 |
|
|
299 |
|
|
300 |
1; |
1; |
301 |
__END__ |
__END__ |
302 |
|
|