Current File : //usr/lib64/perl5/vendor_perl/auto/DBI/Driver_xst.h
/*
# $Id$
# Copyright (c) 2002 Tim Bunce Ireland
#
# You may distribute under the terms of either the GNU General Public
# License or the Artistic License, as specified in the Perl README file.
*/
/* This is really just a workaround for SUPER:: not working right for XS code.
* It would be better if we setup perl's context so SUPER:: did the right thing
* (borrowing the relevant magic from pp_entersub in perl pp_hot.c).
* Then we could just use call_method("SUPER::foo") instead.
* XXX remember to call SPAGAIN in the calling code after calling this!
*/
static SV *
dbixst_bounce_method(char *methname, int params)
{
dTHX;
/* XXX this 'magic' undoes the dMARK embedded in the dXSARGS of our caller */
/* so that the dXSARGS below can set things up as they were for our caller */
void *xxx = PL_markstack_ptr++;
dXSARGS; /* declares sp, ax, mark, items */
int i;
SV *sv;
int debug = 0;
D_imp_xxh(ST(0));
if (debug >= 3) {
PerlIO_printf(DBIc_LOGPIO(imp_xxh),
" -> %s (trampoline call with %d (%ld) params)\n", methname, params, (long)items);
PERL_UNUSED_VAR(xxx);
}
EXTEND(SP, params);
PUSHMARK(SP);
for (i=0; i < params; ++i) {
sv = (i >= items) ? &PL_sv_undef : ST(i);
PUSHs(sv);
}
PUTBACK;
i = call_method(methname, G_SCALAR);
SPAGAIN;
sv = (i) ? POPs : &PL_sv_undef;
PUTBACK;
if (debug >= 3)
PerlIO_printf(DBIc_LOGPIO(imp_xxh),
" <- %s= %s (trampoline call return)\n", methname, neatsvpv(sv,0));
return sv;
}
static int
dbdxst_bind_params(SV *sth, imp_sth_t *imp_sth, I32 items, I32 ax)
{
/* Handle binding supplied values to placeholders. */
/* items = one greater than the number of params */
/* ax = ax from calling sub, maybe adjusted to match items */
dTHX;
int i;
SV *idx;
if (items-1 != DBIc_NUM_PARAMS(imp_sth)
&& DBIc_NUM_PARAMS(imp_sth) != DBIc_NUM_PARAMS_AT_EXECUTE
) {
char errmsg[99];
/* clear any previous ParamValues before error is generated */
SV **svp = hv_fetch((HV*)DBIc_MY_H(imp_sth),"ParamValues",11,FALSE);
if (svp && SvROK(*svp) && SvTYPE(SvRV(*svp)) == SVt_PVHV) {
HV *hv = (HV*)SvRV(*svp);
hv_clear(hv);
}
sprintf(errmsg,"called with %d bind variables when %d are needed",
(int)items-1, DBIc_NUM_PARAMS(imp_sth));
DBIh_SET_ERR_CHAR(sth, (imp_xxh_t*)imp_sth, "-1", -1, errmsg, Nullch, Nullch);
return 0;
}
idx = sv_2mortal(newSViv(0));
for(i=1; i < items ; ++i) {
SV* value = ST(i);
if (SvGMAGICAL(value))
mg_get(value); /* trigger magic to FETCH the value */
sv_setiv(idx, i);
if (!dbd_bind_ph(sth, imp_sth, idx, value, 0, Nullsv, FALSE, 0)) {
return 0; /* dbd_bind_ph already registered error */
}
}
return 1;
}
#ifndef dbd_fetchall_arrayref
static SV *
dbdxst_fetchall_arrayref(SV *sth, SV *slice, SV *batch_row_count)
{
dTHX;
D_imp_sth(sth);
SV *rows_rvav;
if (SvOK(slice)) { /* should never get here */
char errmsg[99];
sprintf(errmsg,"slice param not supported by XS version of fetchall_arrayref");
DBIh_SET_ERR_CHAR(sth, (imp_xxh_t*)imp_sth, "-1", -1, errmsg, Nullch, Nullch);
return &PL_sv_undef;
}
else {
IV maxrows = SvOK(batch_row_count) ? SvIV(batch_row_count) : -1;
AV *fetched_av;
AV *rows_av = newAV();
if ( !DBIc_ACTIVE(imp_sth) && maxrows>0 ) {
/* to simplify application logic we return undef without an error */
/* if we've fetched all the rows and called with a batch_row_count */
return &PL_sv_undef;
}
av_extend(rows_av, (maxrows>0) ? maxrows : 31);
while ( (maxrows < 0 || maxrows-- > 0)
&& (fetched_av = dbd_st_fetch(sth, imp_sth))
) {
AV *copy_row_av = av_make(AvFILL(fetched_av)+1, AvARRAY(fetched_av));
av_push(rows_av, newRV_noinc((SV*)copy_row_av));
}
rows_rvav = sv_2mortal(newRV_noinc((SV *)rows_av));
}
return rows_rvav;
}
#endif
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