1 # $Id: ZOOM.pm,v 1.44 2007-01-16 11:17:28 mike Exp $
11 # Member naming convention: hash-element names which begin with an
12 # underscore represent underlying ZOOM-C object descriptors; those
13 # which lack them represent Perl's ZOOM objects. (The same convention
14 # is used in naming local variables where appropriate.)
16 # So, for example, the ZOOM::Connection class has an {_conn} element,
17 # which is a pointer to the ZOOM-C Connection object; but the
18 # ZOOM::ResultSet class has a {conn} element, which is a reference to
19 # the Perl-level Connection object by which it was created. (It may
20 # be that we find we have no need for these references, but for now
23 # To get at the underlying ZOOM-C connection object of a result-set
24 # (if you ever needed to do such a thing, which you probably don't)
25 # you'd use $rs->{conn}->_conn().
27 # ----------------------------------------------------------------------------
29 # The "Error" package contains constants returned as error-codes.
31 sub NONE { Net::Z3950::ZOOM::ERROR_NONE }
32 sub CONNECT { Net::Z3950::ZOOM::ERROR_CONNECT }
33 sub MEMORY { Net::Z3950::ZOOM::ERROR_MEMORY }
34 sub ENCODE { Net::Z3950::ZOOM::ERROR_ENCODE }
35 sub DECODE { Net::Z3950::ZOOM::ERROR_DECODE }
36 sub CONNECTION_LOST { Net::Z3950::ZOOM::ERROR_CONNECTION_LOST }
37 sub ZINIT { Net::Z3950::ZOOM::ERROR_INIT }
38 sub INTERNAL { Net::Z3950::ZOOM::ERROR_INTERNAL }
39 sub TIMEOUT { Net::Z3950::ZOOM::ERROR_TIMEOUT }
40 sub UNSUPPORTED_PROTOCOL { Net::Z3950::ZOOM::ERROR_UNSUPPORTED_PROTOCOL }
41 sub UNSUPPORTED_QUERY { Net::Z3950::ZOOM::ERROR_UNSUPPORTED_QUERY }
42 sub INVALID_QUERY { Net::Z3950::ZOOM::ERROR_INVALID_QUERY }
43 sub CQL_PARSE { Net::Z3950::ZOOM::ERROR_CQL_PARSE }
44 sub CQL_TRANSFORM { Net::Z3950::ZOOM::ERROR_CQL_TRANSFORM }
45 sub CCL_CONFIG { Net::Z3950::ZOOM::ERROR_CCL_CONFIG }
46 sub CCL_PARSE { Net::Z3950::ZOOM::ERROR_CCL_PARSE }
47 # The following are added specifically for this OO interface
48 sub CREATE_QUERY { 20001 }
49 sub QUERY_CQL { 20002 }
50 sub QUERY_PQF { 20003 }
54 sub SCANTERM { 20007 }
55 sub LOGLEVEL { 20008 }
57 # Separate space for CCL errors. Great.
58 package ZOOM::CCL::Error;
59 sub OK { Net::Z3950::ZOOM::CCL_ERR_OK }
60 sub TERM_EXPECTED { Net::Z3950::ZOOM::CCL_ERR_TERM_EXPECTED }
61 sub RP_EXPECTED { Net::Z3950::ZOOM::CCL_ERR_RP_EXPECTED }
62 sub SETNAME_EXPECTED { Net::Z3950::ZOOM::CCL_ERR_SETNAME_EXPECTED }
63 sub OP_EXPECTED { Net::Z3950::ZOOM::CCL_ERR_OP_EXPECTED }
64 sub BAD_RP { Net::Z3950::ZOOM::CCL_ERR_BAD_RP }
65 sub UNKNOWN_QUAL { Net::Z3950::ZOOM::CCL_ERR_UNKNOWN_QUAL }
66 sub DOUBLE_QUAL { Net::Z3950::ZOOM::CCL_ERR_DOUBLE_QUAL }
67 sub EQ_EXPECTED { Net::Z3950::ZOOM::CCL_ERR_EQ_EXPECTED }
68 sub BAD_RELATION { Net::Z3950::ZOOM::CCL_ERR_BAD_RELATION }
69 sub TRUNC_NOT_LEFT { Net::Z3950::ZOOM::CCL_ERR_TRUNC_NOT_LEFT }
70 sub TRUNC_NOT_BOTH { Net::Z3950::ZOOM::CCL_ERR_TRUNC_NOT_BOTH }
71 sub TRUNC_NOT_RIGHT { Net::Z3950::ZOOM::CCL_ERR_TRUNC_NOT_RIGHT }
73 # The "Event" package contains constants returned by last_event()
75 sub NONE { Net::Z3950::ZOOM::EVENT_NONE }
76 sub CONNECT { Net::Z3950::ZOOM::EVENT_CONNECT }
77 sub SEND_DATA { Net::Z3950::ZOOM::EVENT_SEND_DATA }
78 sub RECV_DATA { Net::Z3950::ZOOM::EVENT_RECV_DATA }
79 sub TIMEOUT { Net::Z3950::ZOOM::EVENT_TIMEOUT }
80 sub UNKNOWN { Net::Z3950::ZOOM::EVENT_UNKNOWN }
81 sub SEND_APDU { Net::Z3950::ZOOM::EVENT_SEND_APDU }
82 sub RECV_APDU { Net::Z3950::ZOOM::EVENT_RECV_APDU }
83 sub RECV_RECORD { Net::Z3950::ZOOM::EVENT_RECV_RECORD }
84 sub RECV_SEARCH { Net::Z3950::ZOOM::EVENT_RECV_SEARCH }
85 sub ZEND { Net::Z3950::ZOOM::EVENT_END }
87 # ----------------------------------------------------------------------------
94 # Special cases for error specific to the OO layer
95 if ($code == ZOOM::Error::CREATE_QUERY) {
96 return "can't create query object";
97 } elsif ($code == ZOOM::Error::QUERY_CQL) {
98 return "can't set CQL query";
99 } elsif ($code == ZOOM::Error::QUERY_PQF) {
100 return "can't set prefix query";
101 } elsif ($code == ZOOM::Error::SORTBY) {
102 return "can't set sort-specification";
103 } elsif ($code == ZOOM::Error::CLONE) {
104 return "can't clone record";
105 } elsif ($code == ZOOM::Error::PACKAGE) {
106 return "can't create package";
107 } elsif ($code == ZOOM::Error::SCANTERM) {
108 return "can't retrieve term from scan-set";
109 } elsif ($code == ZOOM::Error::LOGLEVEL) {
110 return "unregistered log-level";
113 return Net::Z3950::ZOOM::diag_str($code);
117 return Net::Z3950::ZOOM::event_str(@_);
123 my @_connsref = map { $_->_conn() } @$connsref;
124 return Net::Z3950::ZOOM::event(\@_connsref);
128 my($code, $addinfo, $diagset) = @_;
130 die new ZOOM::Exception($code, undef, $addinfo, $diagset);
133 # ----------------------------------------------------------------------------
135 package ZOOM::Exception;
139 my($code, $message, $addinfo, $diagset) = @_;
142 if (uc($diagset) eq "ZOOM" || uc($diagset) eq "BIB-1") {
143 $message ||= ZOOM::diag_str($code);
145 # Should fill in messages for other diagsets, too.
158 return $this->{code};
163 return $this->{message};
168 return $this->{addinfo};
173 return $this->{diagset};
178 my $res = "ZOOM error " . $this->code() . ' "' . $this->message() . '"';
179 $res .= ' (addinfo: "' . $this->addinfo() . '")' if $this->addinfo();
180 $res .= " from diag-set '" . $this->diagset() . "'" if $this->diagset();
184 # This means that untrapped exceptions render nicely.
185 use overload '""' => \&render;
187 # ----------------------------------------------------------------------------
189 package ZOOM::Options;
197 $opts = Net::Z3950::ZOOM::options_create();
199 $opts = Net::Z3950::ZOOM::options_create_with_parent($p1->_opts());
201 $opts = Net::Z3950::ZOOM::options_create_with_parent2($p1->_opts(),
204 die "can't make $class object with more than 2 parents";
212 # PRIVATE to this class and ZOOM::Connection::create() and
213 # ZOOM::Connection::package()
218 my $_opts = $this->{_opts};
219 die "{_opts} undefined: has this Options block been destroy()ed?"
227 my($key, $value) = @_;
229 my $oldval = Net::Z3950::ZOOM::options_get($this->_opts(), $key);
230 Net::Z3950::ZOOM::options_set($this->_opts(), $key, $value)
238 my($key, $value) = @_;
241 my $oldval = Net::Z3950::ZOOM::options_getl($this->_opts(),
243 Net::Z3950::ZOOM::options_setl($this->_opts(), $key,
244 $value, length($value))
250 # This is a bit stupid, since the scalar values that Perl returns from
251 # option() can be used as a boolean; but it's just possible that some
252 # applications will rely on ZOOM_options_get_bool()'s idiosyncratic
253 # interpretation of what constitutes truth.
257 my($key, $default) = @_;
259 return Net::Z3950::ZOOM::options_get_bool($this->_opts(), $key, $default);
262 # .. and the next two are even more stupid
265 my($key, $default) = @_;
267 return Net::Z3950::ZOOM::options_get_int($this->_opts(), $key, $default);
272 my($key, $value) = @_;
274 Net::Z3950::ZOOM::options_set_int($this->_opts(), $key, $value);
277 # ### Feel guilty. Feel very, very guilty. I've not been able to
278 # get the callback memory-management right in "ZOOM.xs", with
279 # the result that the values of $function and $udata passed into
280 # this function, which are on the stack, have sometimes been
281 # freed by the time they're used by __ZOOM_option_callback(),
282 # with hilarious results. To avoid this, I copy the values into
283 # module-scoped globals, and pass _those_ into the extension
284 # function. To avoid overwriting those globals by subsequent
285 # calls, I keep all the old ones, pushed onto the @_function and
286 # @_udata arrays, which means that THIS FUNCTION LEAKS MEMORY
287 # LIKE IT'S GOING OUT OF FASHION. Not nice. One day, I should
288 # fix this, but for now there's more important fish to fry.
290 my(@_function, @_udata);
293 my($function, $udata) = @_;
295 push @_function, $function;
296 push @_udata, $udata;
297 Net::Z3950::ZOOM::options_set_callback($o1->_opts(),
298 $_function[-1], $_udata[-1]);
304 Net::Z3950::ZOOM::options_destroy($this->_opts());
305 $this->{_opts} = undef;
309 # ----------------------------------------------------------------------------
311 package ZOOM::Connection;
315 my($host, $port, @options) = @_;
317 my $conn = $class->create(@options);
318 $conn->{host} = $host;
319 $conn->{port} = $port;
321 Net::Z3950::ZOOM::connection_connect($conn->_conn(), $host, $port || 0);
327 # PRIVATE to this class, to ZOOM::event() and to ZOOM::Query::CQL2RPN::new()
331 my $_conn = $this->{_conn};
332 die "{_conn} undefined: has this Connection been destroy()ed?"
341 my($errcode, $errmsg, $addinfo, $diagset) = (undef, "x", "x", "x");
342 $errcode = Net::Z3950::ZOOM::connection_error_x($this->_conn(), $errmsg,
344 die new ZOOM::Exception($errcode, $errmsg, $addinfo, $diagset)
354 $_opts = $_[0]->_opts();
356 $_opts = Net::Z3950::ZOOM::options_create();
357 while (@options >= 2) {
358 my $key = shift(@options);
359 my $val = shift(@options);
360 Net::Z3950::ZOOM::options_set($_opts, $key, $val);
363 die "Odd number of options specified"
367 my $_conn = Net::Z3950::ZOOM::connection_create($_opts);
379 my($errcode, $errmsg, $addinfo, $diagset) = (undef, "dummy", "dummy", "d");
380 $errcode = Net::Z3950::ZOOM::connection_error_x($this->_conn(), $errmsg,
382 return wantarray() ? ($errcode, $errmsg, $addinfo, $diagset) : $errcode;
387 return Net::Z3950::ZOOM::connection_errcode($this->_conn());
392 return Net::Z3950::ZOOM::connection_errmsg($this->_conn());
397 return Net::Z3950::ZOOM::connection_addinfo($this->_conn());
402 return Net::Z3950::ZOOM::connection_diagset($this->_conn());
407 my($host, $port) = @_;
409 $port = 0 if !defined $port;
410 Net::Z3950::ZOOM::connection_connect($this->_conn(), $host, $port);
417 my($key, $value) = @_;
419 my $oldval = Net::Z3950::ZOOM::connection_option_get($this->_conn(), $key);
420 Net::Z3950::ZOOM::connection_option_set($this->_conn(), $key, $value)
428 my($key, $value) = @_;
431 my $oldval = Net::Z3950::ZOOM::connection_option_getl($this->_conn(),
433 Net::Z3950::ZOOM::connection_option_setl($this->_conn(), $key,
434 $value, length($value))
444 my $_rs = Net::Z3950::ZOOM::connection_search($this->_conn(),
447 return _new ZOOM::ResultSet($this, $query, $_rs);
454 my $_rs = Net::Z3950::ZOOM::connection_search_pqf($this->_conn(), $pqf);
456 return _new ZOOM::ResultSet($this, $pqf, $_rs);
463 my $_ss = Net::Z3950::ZOOM::connection_scan($this->_conn(), $startterm);
465 return _new ZOOM::ScanSet($this, $startterm, $_ss);
472 my $_ss = Net::Z3950::ZOOM::connection_scan1($this->_conn(),
475 return _new ZOOM::ScanSet($this, $query, $_ss);
482 my $_o = defined $options ? $options->_opts() :
483 Net::Z3950::ZOOM::options_create();
484 my $_p = Net::Z3950::ZOOM::connection_package($this->_conn(), $_o)
485 or ZOOM::_oops(ZOOM::Error::PACKAGE);
487 return _new ZOOM::Package($this, $options, $_p);
493 return Net::Z3950::ZOOM::connection_last_event($this->_conn());
499 return Net::Z3950::ZOOM::connection_is_idle($this->_conn());
505 return Net::Z3950::ZOOM::connection_peek_event($this->_conn());
511 Net::Z3950::ZOOM::connection_destroy($this->_conn());
512 $this->{_conn} = undef;
516 # ----------------------------------------------------------------------------
522 die "You can't create $class objects: it's a virtual base class";
525 # PRIVATE to this class and ZOOM::Connection::search()
529 my $_query = $this->{_query};
530 die "{_query} undefined: has this Query been destroy()ed?"
540 Net::Z3950::ZOOM::query_sortby($this->_query(), $sortby) == 0
541 or ZOOM::_oops(ZOOM::Error::SORTBY, $sortby);
547 Net::Z3950::ZOOM::query_destroy($this->_query());
548 $this->{_query} = undef;
552 package ZOOM::Query::CQL;
553 our @ISA = qw(ZOOM::Query);
559 my $q = Net::Z3950::ZOOM::query_create()
560 or ZOOM::_oops(ZOOM::Error::CREATE_QUERY);
561 Net::Z3950::ZOOM::query_cql($q, $string) == 0
562 or ZOOM::_oops(ZOOM::Error::QUERY_CQL, $string);
570 package ZOOM::Query::CQL2RPN;
571 our @ISA = qw(ZOOM::Query);
575 my($string, $conn) = @_;
577 my $q = Net::Z3950::ZOOM::query_create()
578 or ZOOM::_oops(ZOOM::Error::CREATE_QUERY);
579 # check() throws the exception we want; but we only want it on failure!
580 Net::Z3950::ZOOM::query_cql2rpn($q, $string, $conn->_conn()) == 0
589 # We have to work around the retarded ZOOM_query_ccl2rpn() API
590 package ZOOM::Query::CCL2RPN;
591 our @ISA = qw(ZOOM::Query);
595 my($string, $conn) = @_;
597 my $q = Net::Z3950::ZOOM::query_create()
598 or ZOOM::_oops(ZOOM::Error::CREATE_QUERY);
600 my $config = $conn->option("cclqual");
601 if (!defined $config) {
602 my $cclfile = $conn->option("cclfile")
603 or ZOOM::_oops(ZOOM::Error::CCL_CONFIG,
604 "no 'cclqual' or 'cclfile' specified");
605 my $fh = new IO::File("<$cclfile")
606 or ZOOM::_oops(ZOOM::Error::CCL_CONFIG,
607 "can't open cclfile '$cclfile': $!");
608 $config = join("", <$fh>);
612 my($ccl_errcode, $ccl_errstr, $ccl_errpos) = (0, "", 0);
613 if (Net::Z3950::ZOOM::query_ccl2rpn($q, $string, $config,
614 $ccl_errcode, $ccl_errstr,
616 # We have no use for $ccl_errcode or $ccl_errpos
617 ZOOM::_oops(ZOOM::Error::CCL_PARSE, $ccl_errstr);
626 package ZOOM::Query::PQF;
627 our @ISA = qw(ZOOM::Query);
633 my $q = Net::Z3950::ZOOM::query_create()
634 or ZOOM::_oops(ZOOM::Error::CREATE_QUERY);
635 Net::Z3950::ZOOM::query_prefix($q, $string) == 0
636 or ZOOM::_oops(ZOOM::Error::QUERY_PQF, $string);
644 # ----------------------------------------------------------------------------
646 package ZOOM::ResultSet;
650 die "You can't create $class objects directly";
653 # PRIVATE to ZOOM::Connection::search() and ZOOM::Connection::search_pqf()
656 my($conn, $query, $_rs) = @_;
660 query => $query, # This is not currently used, which is
661 # just as well since it could be
662 # either a string (when the RS is
663 # created with search_pqf()) or a
664 # ZOOM::Query object (when it's
665 # created with search())
670 # PRIVATE to this class
674 my $_rs = $this->{_rs};
675 die "{_rs} undefined: has this ResultSet been destroy()ed?"
683 my($key, $value) = @_;
685 my $oldval = Net::Z3950::ZOOM::resultset_option_get($this->_rs(), $key);
686 Net::Z3950::ZOOM::resultset_option_set($this->_rs(), $key, $value)
695 return Net::Z3950::ZOOM::resultset_size($this->_rs());
702 my $_rec = Net::Z3950::ZOOM::resultset_record($this->_rs(), $which);
703 $this->{conn}->_check();
705 # Even if no error has occurred, I think record() might
706 # legitimately return undef if we're running in asynchronous mode
707 # and the record just hasn't been retrieved yet. This goes double
708 # for record_immediate().
709 return undef if !defined $_rec;
711 # For some reason, I have to use the explicit "->" syntax in order
712 # to invoke the ZOOM::Record constructor here, even though I don't
713 # have to do the same for _new ZOOM::ResultSet above. Weird.
714 return ZOOM::Record->_new($this, $which, $_rec);
717 sub record_immediate {
721 my $_rec = Net::Z3950::ZOOM::resultset_record_immediate($this->_rs(),
723 $this->{conn}->_check();
724 # The record might legitimately not be there yet
725 return undef if !defined $_rec;
727 return ZOOM::Record->_new($this, $which, $_rec);
733 Net::Z3950::ZOOM::resultset_cache_reset($this->_rs());
738 my($start, $count, $return_records) = @_;
740 # If the request is out of range, ZOOM-C will currently (as of YAZ
741 # 2.1.38) no-op: it understandably refuses to build and send a
742 # known-bad APDU, but it doesn't set a diagnostic as it ought. So
743 # for now, we do it here. It would be more polite to stash the
744 # error-code in the ZOOM-C connection object for subsequent
745 # discovery (which is what ZOOM-C will presumably do itself when
746 # it's fixed) but since there is no API that allows us to do that,
747 # we just have to throw the exception right now. That's probably
748 # OK for synchronous applications, but not really for
750 my $size = $this->size();
751 if ($start + $count-1 >= $size) {
752 # BIB-1 diagnostic 13 is "Present request out-of-range"
753 ZOOM::_oops(13, undef, "BIB-1");
756 my $raw = Net::Z3950::ZOOM::resultset_records($this->_rs(), $start, $count,
758 # By design, $raw may be undefined (if $return_records is true)
759 return undef if !defined $raw;
761 # We need to package up the returned records in ZOOM::Record objects
763 for my $i (0 .. @$raw-1) {
764 my $_rec = $raw->[$i];
765 if (!defined $_rec) {
768 push @res, ZOOM::Record->_new($this, $start+$i, $_rec);
777 my($sort_type, $sort_spec) = @_;
779 return Net::Z3950::ZOOM::resultset_sort1($this->_rs(),
780 $sort_type, $sort_spec);
786 Net::Z3950::ZOOM::resultset_destroy($this->_rs());
787 $this->{_rs} = undef;
791 # ----------------------------------------------------------------------------
793 package ZOOM::Record;
797 die "You can't create $class objects directly";
800 # PRIVATE to ZOOM::ResultSet::record(),
801 # ZOOM::ResultSet::record_immediate(), ZOOM::ResultSet::records() and
802 # ZOOM::Record::clone()
806 my($rs, $which, $_rec) = @_;
815 # PRIVATE to this class
819 my $_rec = $this->{_rec};
820 die "{_rec} undefined: has this Record been destroy()ed?"
829 my($errcode, $errmsg, $addinfo, $diagset) = (undef, "dummy", "dummy", "d");
830 $errcode = Net::Z3950::ZOOM::record_error($this->_rec(), $errmsg,
833 return wantarray() ? ($errcode, $errmsg, $addinfo, $diagset) : $errcode;
839 my($errcode, $errmsg, $addinfo, $diagset) = $this->error();
840 return undef if $errcode == 0;
841 return new ZOOM::Exception($errcode, $errmsg, $addinfo, $diagset);
848 return $this->get("render", @_);
854 return $this->get("raw", @_);
859 my($type, $args) = @_;
861 $type = "$type;$args" if defined $args;
863 my $string = Net::Z3950::ZOOM::record_get($this->_rec(), $type, $len);
864 # I don't think we need '$len' at all. ### Probably the Perl-to-C
865 # glue code should use the value of `len' as well as the opaque
866 # data-pointer returned, to ensure that the SV contains all of the
867 # returned data and does not stop at the first NUL character in
868 # binary data. Carefully check the ZOOM_record_get() documentation.
875 my $raw = Net::Z3950::ZOOM::record_clone($this->_rec())
876 or ZOOM::_oops(ZOOM::Error::CLONE);
878 # Arg 1 (rs) is undefined as the new record doesn't belong to an RS
879 return _new ZOOM::Record(undef, undef, $raw);
885 Net::Z3950::ZOOM::record_destroy($this->_rec());
886 $this->{_rec} = undef;
890 # ----------------------------------------------------------------------------
892 package ZOOM::ScanSet;
896 die "You can't create $class objects directly";
899 # PRIVATE to ZOOM::Connection::scan(),
902 my($conn, $startterm, $_ss) = @_;
906 startterm => $startterm,# This is not currently used, which is
907 # just as well since it could be
908 # either a string (when the SS is
909 # created with scan()) or a
910 # ZOOM::Query object (when it's
911 # created with scan1())
916 # PRIVATE to this class
920 my $_ss = $this->{_ss};
921 die "{_ss} undefined: has this ScanSet been destroy()ed?"
929 my($key, $value) = @_;
931 my $oldval = Net::Z3950::ZOOM::scanset_option_get($this->_ss(), $key);
932 Net::Z3950::ZOOM::scanset_option_set($this->_ss(), $key, $value)
941 return Net::Z3950::ZOOM::scanset_size($this->_ss());
948 my($occ, $len) = (0, 0);
949 my $term = Net::Z3950::ZOOM::scanset_term($this->_ss(), $which,
951 or ZOOM::_oops(ZOOM::Error::SCANTERM);
953 die "length of term '$term' differs from returned len=$len"
954 if length($term) != $len;
956 return ($term, $occ);
963 my($occ, $len) = (0, 0);
964 my $term = Net::Z3950::ZOOM::scanset_display_term($this->_ss(), $which,
966 or ZOOM::_oops(ZOOM::Error::SCANTERM);
968 die "length of display term '$term' differs from returned len=$len"
969 if length($term) != $len;
971 return ($term, $occ);
977 Net::Z3950::ZOOM::scanset_destroy($this->_ss());
978 $this->{_ss} = undef;
982 # ----------------------------------------------------------------------------
984 package ZOOM::Package;
988 die "You can't create $class objects directly";
991 # PRIVATE to ZOOM::Connection::package(),
994 my($conn, $options, $_p) = @_;
1003 # PRIVATE to this class
1007 my $_p = $this->{_p};
1008 die "{_p} undefined: has this Package been destroy()ed?"
1016 my($key, $value) = @_;
1018 my $oldval = Net::Z3950::ZOOM::package_option_get($this->_p(), $key);
1019 Net::Z3950::ZOOM::package_option_set($this->_p(), $key, $value)
1029 Net::Z3950::ZOOM::package_send($this->_p(), $type);
1030 $this->{conn}->_check();
1036 Net::Z3950::ZOOM::package_destroy($this->_p());
1037 $this->{_p} = undef;
1041 # There follows trivial support for YAZ logging. This is wired out
1042 # into the Net::Z3950::ZOOM package, and we here provide wrapper
1043 # functions -- nothing more than aliases, really -- in the ZOOM::Log
1044 # package. There really is no point in inventing an OO interface.
1046 # Passing @_ directly to the underlying Net::Z3950::ZOOM::* functions
1047 # doesn't work, for reasons that I can't begin to fathom, and that
1048 # don't particularly interest me. Unpacking into scalars and passing
1049 # those _does_ work, so that's what we do.
1053 sub mask_str { my($a) = @_; Net::Z3950::ZOOM::yaz_log_mask_str($a); }
1054 sub module_level { my($a) = @_; Net::Z3950::ZOOM::yaz_log_module_level($a); }
1055 sub init { my($a, $b, $c) = @_;
1056 Net::Z3950::ZOOM::yaz_log_init($a, $b, $c) }
1057 sub init_file { my($a) = @_; Net::Z3950::ZOOM::yaz_log_init_file($a) }
1058 sub init_level { my($a) = @_; Net::Z3950::ZOOM::yaz_log_init_level($a) }
1059 sub init_prefix { my($a) = @_; Net::Z3950::ZOOM::yaz_log_init_prefix($a) }
1060 sub time_format { my($a) = @_; Net::Z3950::ZOOM::yaz_log_time_format($a) }
1061 sub init_max_size { my($a) = @_; Net::Z3950::ZOOM::yaz_log_init_max_size($a) }
1064 my($level, @message) = @_;
1066 if ($level !~ /^(0x)?\d+$/) {
1067 # Assuming its log-level name, we look it up.
1068 my $num = module_level($level);
1069 ZOOM::_oops(ZOOM::Error::LOGLEVEL, $level)
1074 Net::Z3950::ZOOM::yaz_log($level, join("", @message));