-/* $Id: ZOOM.xs,v 1.6 2005-10-11 11:36:08 mike Exp $ */
+/* $Id: ZOOM.xs,v 1.34 2005-12-19 17:46:52 mike Exp $ */
#include "EXTERN.h"
#include "perl.h"
#include "XSUB.h"
#include <yaz/zoom.h>
-
-
-MODULE = Net::Z3950::ZOOM PACKAGE = Net::Z3950::ZOOM
+#include <yaz/xmalloc.h>
+
+/* Used by the *_setl() functions */
+typedef char opaquechar;
+
+/* Used as the return value of the *_getl() functions */
+struct datachunk {
+ char *data;
+ int len;
+};
+
+/* Used to package Perl function-pointer and user-data together */
+struct callback_block {
+ SV *function;
+ SV *handle;
+};
+
+/* The callback function used for ZOOM_options_set_callback(). I do
+ * not claim to fully understand all the stack-hacking magic, and less
+ * still the reference-counting/mortality stuff. Accordingly, the
+ * memory management here is best characterised as What I Could Get To
+ * Work, More Or Less.
+ */
+const char *__ZOOM_option_callback (void *handle, const char *name)
+{
+ struct callback_block *cb = (struct callback_block*) handle;
+ int count;
+ SV *ret;
+ char *s;
+ char *res;
+
+ dSP;
+
+ ENTER;
+ SAVETMPS;
+
+ PUSHMARK(SP);
+ XPUSHs(cb->handle);
+ XPUSHs(sv_2mortal(newSVpv(name, 0)));
+ PUTBACK;
+ /* Perl_sv_dump(0, cb->function); */
+
+ count = call_sv(cb->function, G_SCALAR);
+
+ SPAGAIN;
+
+ if (count != 1)
+ croak("callback function for ZOOM_options_get() returned %d values: should have returned exactly one", count);
+
+ ret = POPs;
+ if (SvPOK(ret)) {
+ s = SvPV_nolen(ret);
+ /* ### `res' never gets freed! I think it is
+ * impossible to solve this problem "correctly"
+ * because the ZOOM-C option callback interface is
+ * inadequate. */
+ res = xstrdup(s);
+ } else {
+ res = 0;
+ }
+
+ PUTBACK;
+ FREETMPS;
+ LEAVE;
+
+ return res;
+}
+
+
+MODULE = Net::Z3950::ZOOM PACKAGE = Net::Z3950::ZOOM PREFIX=ZOOM_
PROTOTYPES: ENABLE
-# It seems that when one of these functions is called from Perl with
-# a string-constant argument, that is not recognised as suitable to
-# be mapped onto a "const char*" argument. The only fix I can find is
-# to delete as the "const" qualifiers from "char*" arguments:
-# overriding the auto-generated prototyping with PROTOTYPE: $$
-# doesn't help (and indeed seems to make no difference at all).
-#
ZOOM_connection
ZOOM_connection_new(host, portnum)
- char* host
+ const char* host
int portnum
ZOOM_connection
ZOOM_connection_create(options)
- ZOOM_options options
+ ZOOM_options options
void
ZOOM_connection_connect(c, host, portnum)
ZOOM_connection c
- const char * host
- int portnum
+ const char* host
+ int portnum
void
ZOOM_connection_destroy(c)
const char *
ZOOM_connection_option_get(c, key)
ZOOM_connection c
- const char * key
+ const char *key
+
+struct datachunk
+ZOOM_connection_option_getl(c, key, len)
+ ZOOM_connection c
+ const char* key
+ int &len
+ CODE:
+ RETVAL.data = (char*) ZOOM_connection_option_getl(c, key, &len);
+ RETVAL.len = len;
+ OUTPUT:
+ RETVAL
+ len
void
ZOOM_connection_option_set(c, key, val)
ZOOM_connection c
- const char * key
- const char * val
-
+ const char *key
+ const char *val
+
+# In ZOOM-C, the `val' parameter is const char*. However, our typemap
+# treats this as T_PV, i.e. it's "known" that it points to a
+# NUL-terminated string. Instead, then, I here use opaquechar*, which
+# is an opaque pointer. The underlying C function can then use this
+# along with `len' to Do The Right Thing.
+#
void
ZOOM_connection_option_setl(c, key, val, len)
ZOOM_connection c
- const char * key
- const char * val
- int len
+ const char* key
+ opaquechar* val
+ int len
# The reference parameters, `cp' and `addinfo', need to already have
# values when this function is called, otherwise an "uninitialised
char* &cp
char* &addinfo
CODE:
+ {
const char *ccp, *caddinfo;
RETVAL = ZOOM_connection_error(c, &ccp, &caddinfo);
cp = (char*) ccp;
addinfo = (char*) caddinfo;
+ }
OUTPUT:
RETVAL
cp
addinfo
+# See comments for ZOOM_connection_error() above
int
ZOOM_connection_error_x(c, cp, addinfo, diagset)
ZOOM_connection c
- const char ** cp
- const char ** addinfo
- const char ** diagset
+ const char * &cp
+ const char * &addinfo
+ const char * &diagset
+ CODE:
+ {
+ const char *ccp, *caddinfo, *cdset;
+ RETVAL = ZOOM_connection_error_x(c, &ccp, &caddinfo, &cdset);
+ cp = (char*) ccp;
+ addinfo = (char*) caddinfo;
+ diagset = (char*) cdset;
+ }
+ OUTPUT:
+ RETVAL
+ cp
+ addinfo
+ diagset
int
ZOOM_connection_errcode(c)
ZOOM_connection c
const char *
-ZOOM_diag_str(error)
- int error
+ZOOM_connection_diagset(c)
+ ZOOM_connection c
-int
-ZOOM_connection_last_event(cs)
- ZOOM_connection cs
+const char *
+ZOOM_diag_str(error)
+ int error
ZOOM_resultset
ZOOM_connection_search(arg0, q)
ZOOM_connection arg0
- ZOOM_query q
+ ZOOM_query q
-# "const" discarded from type of `q'
ZOOM_resultset
ZOOM_connection_search_pqf(c, q)
- ZOOM_connection c
- char *q
+ ZOOM_connection c
+ const char *q
void
ZOOM_resultset_destroy(r)
- ZOOM_resultset r
+ ZOOM_resultset r
const char *
ZOOM_resultset_option_get(r, key)
- ZOOM_resultset r
- const char * key
+ ZOOM_resultset r
+ const char* key
void
ZOOM_resultset_option_set(r, key, val)
- ZOOM_resultset r
- const char * key
- const char * val
+ ZOOM_resultset r
+ const char* key
+ const char* val
size_t
ZOOM_resultset_size(r)
- ZOOM_resultset r
-
-void
-ZOOM_resultset_records(r, recs, start, count)
- ZOOM_resultset r
- ZOOM_record * recs
- size_t start
- size_t count
+ ZOOM_resultset r
+
+SV *
+ZOOM_resultset_records(r, start, count, return_records)
+ ZOOM_resultset r
+ size_t start
+ size_t count
+ int return_records
+ CODE:
+ {
+ ZOOM_record *recs = 0;
+ if (return_records)
+ recs = (ZOOM_record*) xmalloc(count * sizeof *recs);
+ ZOOM_resultset_records(r, recs, start, count);
+ if (return_records) {
+ AV *av = newAV();
+ int i;
+ for (i = 0; i < count; i++) {
+ SV *tmp = newSV(0);
+ sv_setref_pv(tmp, "ZOOM_record", (void*) recs[i]);
+ av_push(av, tmp);
+ }
+ RETVAL = newRV((SV*) av);
+ } else {
+ RETVAL = &PL_sv_undef;
+ }
+ }
+ OUTPUT:
+ RETVAL
ZOOM_record
ZOOM_resultset_record(s, pos)
- ZOOM_resultset s
- size_t pos
+ ZOOM_resultset s
+ size_t pos
ZOOM_record
ZOOM_resultset_record_immediate(s, pos)
- ZOOM_resultset s
- size_t pos
+ ZOOM_resultset s
+ size_t pos
void
ZOOM_resultset_cache_reset(r)
- ZOOM_resultset r
+ ZOOM_resultset r
+
+# TESTED (but deprecated)
+void
+ZOOM_resultset_sort(r, sort_type, sort_spec)
+ ZOOM_resultset r
+ const char* sort_type
+ const char* sort_spec
+int
+ZOOM_resultset_sort1(r, sort_type, sort_spec)
+ ZOOM_resultset r
+ const char* sort_type
+ const char* sort_spec
+
+# See "typemap" for discussion of the "const char *" return-type.
+#
+### but should use datachunk for in some (not all!) cases.
const char *
ZOOM_record_get(rec, type, len)
- ZOOM_record rec
- const char * type
- int * len
+ ZOOM_record rec
+ const char* type
+ int &len
+ OUTPUT:
+ RETVAL
+ len
void
ZOOM_record_destroy(rec)
- ZOOM_record rec
+ ZOOM_record rec
ZOOM_record
ZOOM_record_clone(srec)
- ZOOM_record srec
+ ZOOM_record srec
ZOOM_query
ZOOM_query_create()
void
ZOOM_query_destroy(s)
- ZOOM_query s
+ ZOOM_query s
int
ZOOM_query_cql(s, str)
- ZOOM_query s
- const char * str
+ ZOOM_query s
+ const char* str
int
ZOOM_query_prefix(s, str)
- ZOOM_query s
- const char * str
+ ZOOM_query s
+ const char* str
int
ZOOM_query_sortby(s, criteria)
ZOOM_scanset
ZOOM_connection_scan(c, startterm)
- ZOOM_connection c
- const char * startterm
+ ZOOM_connection c
+ const char* startterm
+
+ZOOM_scanset
+ZOOM_connection_scan1(c, startterm)
+ ZOOM_connection c
+ ZOOM_query startterm
const char *
ZOOM_scanset_term(scan, pos, occ, len)
- ZOOM_scanset scan
- size_t pos
- int * occ
- int * len
+ ZOOM_scanset scan
+ size_t pos
+ int& occ
+ int& len
+ OUTPUT:
+ RETVAL
+ occ
+ len
const char *
ZOOM_scanset_display_term(scan, pos, occ, len)
- ZOOM_scanset scan
- size_t pos
- int * occ
- int * len
+ ZOOM_scanset scan
+ size_t pos
+ int& occ
+ int& len
+ OUTPUT:
+ RETVAL
+ occ
+ len
size_t
ZOOM_scanset_size(scan)
- ZOOM_scanset scan
+ ZOOM_scanset scan
void
ZOOM_scanset_destroy(scan)
- ZOOM_scanset scan
+ ZOOM_scanset scan
const char *
ZOOM_scanset_option_get(scan, key)
const char * key
const char * val
-ZOOM_package
-ZOOM_connection_package(c, options)
- ZOOM_connection c
- ZOOM_options options
-
-void
-ZOOM_package_destroy(p)
- ZOOM_package p
-
-void
-ZOOM_package_send(p, type)
- ZOOM_package p
- const char * type
-
-const char *
-ZOOM_package_option_get(p, key)
- ZOOM_package p
- const char * key
-
-void
-ZOOM_package_option_set(p, key, val)
- ZOOM_package p
- const char * key
- const char * val
-
+# We ignore the return value of ZOOM_options_set_callback(), since it
+# is always just the address of the __ZOOM_option_callback() function.
+# The information that we actually want -- the address of the Perl
+# function in the callback_block -- is unavailable to us, as the
+# underlying C function doesn't give the block back.
+#
void
-ZOOM_resultset_sort(r, sort_type, sort_spec)
- ZOOM_resultset r
- const char * sort_type
- const char * sort_spec
-
-ZOOM_options_callback
-ZOOM_options_set_callback(opt, c, handle)
- ZOOM_options opt
- ZOOM_options_callback c
- void * handle
+ZOOM_options_set_callback(opt, function, handle)
+ ZOOM_options opt
+ SV* function;
+ SV* handle;
+ CODE:
+ {
+ /* The tiny amount of memory allocated here is never
+ * released, as options_destroy() doesn't do anything
+ * to the callback information. Not a big deal.
+ * Also, I have no idea how to drive the Perl "mortal"
+ * reference-counting stuff, so I am just allocating
+ * copies which also never get released. Don't sue!
+ */
+ struct callback_block *block = (struct callback_block*)
+ xmalloc(sizeof *block);
+ block->function = function;
+ block->handle = handle;
+ SvREFCNT(block->function);
+ SvREFCNT(block->handle);
+ ZOOM_options_set_callback(opt, __ZOOM_option_callback,
+ (void*) block);
+ }
ZOOM_options
ZOOM_options_create()
ZOOM_options
ZOOM_options_create_with_parent(parent)
- ZOOM_options parent
+ ZOOM_options parent
ZOOM_options
ZOOM_options_create_with_parent2(parent1, parent2)
- ZOOM_options parent1
- ZOOM_options parent2
+ ZOOM_options parent1
+ ZOOM_options parent2
const char *
ZOOM_options_get(opt, name)
- ZOOM_options opt
- const char * name
+ ZOOM_options opt
+ const char* name
+
+struct datachunk
+ZOOM_options_getl(opt, name, len)
+ ZOOM_options opt
+ const char* name
+ int &len
+ CODE:
+ RETVAL.data = (char*) ZOOM_options_getl(opt, name, &len);
+ RETVAL.len = len;
+ OUTPUT:
+ RETVAL
+ len
void
ZOOM_options_set(opt, name, v)
- ZOOM_options opt
- const char * name
- const char * v
+ ZOOM_options opt
+ const char* name
+ const char* v
void
ZOOM_options_setl(opt, name, value, len)
- ZOOM_options opt
- const char * name
- const char * value
- int len
+ ZOOM_options opt
+ const char* name
+ opaquechar* value
+ int len
void
ZOOM_options_destroy(opt)
- ZOOM_options opt
+ ZOOM_options opt
int
ZOOM_options_get_bool(opt, name, defa)
- ZOOM_options opt
- const char * name
- int defa
+ ZOOM_options opt
+ const char* name
+ int defa
int
ZOOM_options_get_int(opt, name, defa)
- ZOOM_options opt
- const char * name
- int defa
+ ZOOM_options opt
+ const char* name
+ int defa
void
ZOOM_options_set_int(opt, name, value)
- ZOOM_options opt
- const char * name
- int value
+ ZOOM_options opt
+ const char* name
+ int value
+
+ZOOM_package
+ZOOM_connection_package(c, options)
+ ZOOM_connection c
+ ZOOM_options options
+
+void
+ZOOM_package_destroy(p)
+ ZOOM_package p
+
+void
+ZOOM_package_send(p, type)
+ ZOOM_package p
+ const char * type
+const char *
+ZOOM_package_option_get(p, key)
+ ZOOM_package p
+ const char * key
+
+void
+ZOOM_package_option_set(p, key, val)
+ ZOOM_package p
+ const char * key
+ const char * val
+
+# UNTESTED
int
ZOOM_event(no, cs)
int no
ZOOM_connection * cs
+# UNTESTED
+int
+ZOOM_connection_last_event(cs)
+ ZOOM_connection cs
+
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