static int
put_write_options(term_t opts_in, write_options *options)
{ GET_LD
term_t newlist = PL_new_term_ref();
term_t precopt = PL_new_term_ref();
fid_t fid = PL_open_foreign_frame();
term_t head = PL_new_term_ref();
term_t tail = PL_copy_term_ref(opts_in);
term_t newhead = PL_new_term_ref();
term_t newtail = PL_copy_term_ref(newlist);
int rc = TRUE;
while(rc && PL_get_list(tail, head, tail))
{ if ( !PL_is_functor(head, FUNCTOR_priority1) )
rc = ( PL_unify_list(newtail, newhead, newtail) &&
PL_unify(newhead, head) );
}
if ( rc )
{ rc = ( PL_unify_list(newtail, head, newtail) &&
PL_unify_functor(head, FUNCTOR_priority1) &&
PL_get_arg(1, head, precopt) &&
PL_unify_nil(newtail) );
}
if ( rc )
{ options->write_options = newlist;
options->prec_opt = precopt;
}
PL_close_foreign_frame(fid);
return rc;
}
static int
add_to_form(const char *name, size_t nlen,
const char *value, size_t len,
void *closure)
{ term_t head = PL_new_term_ref();
term_t tail = (term_t) closure;
term_t val = PL_new_term_ref();
int rc;
atom_t aname = 0;
if ( isnumber(value, len) )
{ rc = unify_number(val, value, len);
} else
{ rc = PL_unify_chars(val, PL_ATOM|REP_UTF8, len, value);
}
rc = ( rc &&
PL_unify_list(tail, head, tail) &&
(aname = PL_new_atom_nchars(nlen, name)) &&
PL_unify_term(head,
PL_FUNCTOR, PL_new_functor(aname, 1),
PL_TERM, val) );
if ( aname )
PL_unregister_atom(aname);
return rc;
}
static int
mp_add_to_form(const char *name, size_t nlen,
const char *value, size_t len,
const char *file, void *closure)
{ term_t head = PL_new_term_ref();
term_t tail = (term_t) closure;
term_t val = PL_new_term_ref();
long vl;
double vf;
int rc;
atom_t aname = 0;
if ( isinteger(value, &vl, len) )
rc = PL_put_integer(val, vl);
else if ( isfloat(value, &vf, len) )
rc = PL_put_float(val, vf);
else
rc = PL_unify_chars(val, PL_ATOM|REP_UTF8, len, value);
rc = ( rc &&
PL_unify_list(tail, head, tail) &&
(aname = PL_new_atom_nchars(nlen, name)) &&
PL_unify_term(head,
PL_FUNCTOR, PL_new_functor(aname, 1),
PL_TERM, val) );
if ( aname )
PL_unregister_atom(aname);
return rc;
}
gboolean
plgi_gbytes_to_term(GBytes *bytes,
term_t t)
{
term_t list = PL_copy_term_ref(t);
term_t head = PL_new_term_ref();
const guint8 *data;
gsize size;
gint i;
PLGI_debug(" GBytes: %p ---> term: 0x%lx", bytes, t);
data = g_bytes_get_data(bytes, &size);
for ( i = 0; i < size; i++ )
{ term_t a = PL_new_term_ref();
guint8 v = data[i];
if ( !plgi_guint8_to_term(v, a) )
{ return FALSE;
}
if ( !(PL_unify_list(list, head, list) &&
PL_unify(head, a)) )
{ return FALSE;
}
}
if ( !PL_unify_nil(list) )
{ return FALSE;
}
return TRUE;
}
static foreign_t
archive_property(term_t archive, term_t prop, term_t value)
{ archive_wrapper *ar;
atom_t pn;
const char *s;
if ( !get_archive(archive, &ar) ||
!PL_get_atom_ex(prop, &pn) )
return FALSE;
#ifdef HAVE_ARCHIVE_FILTER_COUNT
if ( pn == ATOM_filter )
{ int i, fcount = archive_filter_count(ar->archive);
term_t tail = PL_copy_term_ref(value);
term_t head = PL_new_term_ref();
for(i=0; i<fcount; i++)
{ s = archive_filter_name(ar->archive, i);
if ( !s || strcmp(s, "none") == 0 )
continue;
if ( !PL_unify_list(tail, head, tail) ||
!PL_unify_atom_chars(head, s) )
return FALSE;
}
return PL_unify_nil(tail);
}
#endif
return FALSE;
}
static foreign_t
pl_group_info(term_t group, term_t info)
{ int gid;
struct group grp, *pgrp;
char buf[1000];
char *name;
term_t members = PL_new_term_ref();
term_t tail = PL_copy_term_ref(members);
term_t head = PL_new_term_ref();
char **memp;
if ( PL_get_integer(group, &gid) )
{ again1:
errno = 0;
if ( getgrgid_r(gid, &grp, buf, sizeof(buf), &pgrp) != 0 )
{ if ( errno == EINTR )
{ if ( PL_handle_signals() < 0 )
return FALSE;
goto again1;
}
return error(errno, "info", "group", group);
}
} else if ( PL_get_chars(group, &name, CVT_ATOMIC|REP_MB) )
{ again2:
errno = 0;
if ( getgrnam_r(name, &grp, buf, sizeof(buf), &pgrp) != 0 )
{ if ( errno == EINTR )
{ if ( PL_handle_signals() < 0 )
return FALSE;
goto again2;
}
return error(errno, "info", "group", group);
}
} else
{ return PL_type_error("group", group);
}
if ( !pgrp )
return PL_existence_error("group", group);
for(memp=pgrp->gr_mem; *memp; memp++)
{ if ( !PL_unify_list(tail, head, tail) ||
!PL_unify_chars(head, PL_ATOM|REP_MB, -1, *memp) )
return FALSE;
}
if ( !PL_unify_nil(tail) )
return FALSE;
return PL_unify_term(info,
PL_FUNCTOR_CHARS, "group_info", 4,
PL_MBCHARS, pgrp->gr_name,
PL_MBCHARS, pgrp->gr_passwd,
PL_INT, (int)pgrp->gr_gid,
PL_TERM, members
);
}
static foreign_t
snowball_algorithms(term_t list)
{ term_t tail = PL_copy_term_ref(list);
term_t head = PL_new_term_ref();
const char **algos = sb_stemmer_list();
int i;
for(i=0; algos[i]; i++)
{ if ( !PL_unify_list(tail, head, tail) ||
!PL_unify_atom_chars(head, algos[i]) )
return FALSE;
}
return PL_unify_nil(tail);
}
// handle OSC message by calling the associated Prolog goal
static int prolog_handler(const char *path, const char *types, lo_arg **argv,
int argc, lo_message msg, void *user_data)
{
term_t goal = PL_new_term_ref();
term_t term0 = PL_new_term_refs(3);
term_t term1 = term0+1;
term_t term2 = term0+2;
term_t list;
int i, rc=0;
PL_recorded((record_t)user_data,goal); // retrieve the goal term
PL_put_term(term0,goal); // term_t goal encoded in user_data
PL_put_atom_chars(term1,path);
list = PL_copy_term_ref(term2);
for (i=0; i<argc; i++) {
term_t head=PL_new_term_ref();
term_t tail=PL_new_term_ref();
if (!PL_unify_list(list,head,tail)) PL_fail;
switch (types[i]) {
case 'c': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"char",1,PL_INT,(int)argv[i]->c); break;
case 'i': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"int",1,PL_INT,argv[i]->i); break;
case 'h': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"int64",1,PL_INT64,argv[i]->h); break;
case 'f': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"float",1,PL_FLOAT,(double)argv[i]->f); break;
case 'd': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"double",1,PL_DOUBLE,argv[i]->d); break;
case 's': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"string",1,PL_CHARS,&argv[i]->s); break;
case 'S': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"symbol",1,PL_CHARS,&argv[i]->S); break;
case 'T': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"true",0); break;
case 'F': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"false",0); break;
case 'N': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"nil",0); break;
case 'I': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"inf",0); break;
case 'b': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"blob",0); break;
case 't': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"timetag",2,
PL_INT64,(int64_t)argv[i]->t.sec,
PL_INT64,(int64_t)argv[i]->t.frac);
break;
case 'm': rc=PL_unify_term(head,PL_FUNCTOR_CHARS,"midi",4,
PL_INT,(int)argv[i]->m[0], PL_INT,(int)argv[i]->m[1],
PL_INT,(int)argv[i]->m[2], PL_INT,(int)argv[i]->m[3]);
break;
}
if (!rc) PL_fail;
list=tail;
}
return PL_unify_nil(list) && PL_call_predicate(NULL,PL_Q_NORMAL,call3,term0);
}
static int
unify_query_string_components(term_t list, size_t len, const pl_wchar_t *qs)
{ if ( len == 0 )
{ return PL_unify_nil(list);
} else
{ term_t tail = PL_copy_term_ref(list);
term_t head = PL_new_term_ref();
term_t eq = PL_new_term_refs(3);
term_t nv = eq+1;
const pl_wchar_t *end = &qs[len];
while(qs < end)
{ range name, value;
name.start = qs;
name.end = skip_not(qs, end, L"=");
if ( name.end < end )
{ value.start = name.end+1;
value.end = skip_not(value.start, end, L"&;");
qs = value.end+1;
} else
{ return syntax_error("illegal_uri_query");
}
PL_put_variable(nv+0);
PL_put_variable(nv+1);
unify_decoded_atom(nv+0, &name, ESC_QNAME);
unify_decoded_atom(nv+1, &value, ESC_QVALUE);
if ( !PL_cons_functor_v(eq, FUNCTOR_equal2, nv) ||
!PL_unify_list(tail, head, tail) ||
!PL_unify(head, eq) )
return FALSE;
}
return PL_unify_nil(tail);
}
}
static int unify_list_from_span(term_t list, clingo_symbol_t const *syms,
size_t slen) {
int rc;
term_t tail = PL_copy_term_ref(list);
term_t head = PL_new_term_ref();
term_t tmp = PL_new_term_ref();
clingo_symbol_t const *it, *ie;
for (it = syms, ie = it + slen; it != ie; ++it) {
PL_put_variable(tmp);
if (!(rc = (unify_value(tmp, *it) && PL_unify_list(tail, head, tail) &&
PL_unify(head, tmp)))) {
goto out;
}
}
if (!(rc = PL_unify_nil(tail))) {
goto out;
}
out:
return rc;
}
static foreign_t
tcp_select(term_t Streams, term_t Available, term_t timeout)
{ fd_set fds;
struct timeval t, *to;
double time;
int n, max = 0, ret, min = 1000000;
fdentry *map = NULL;
term_t head = PL_new_term_ref();
term_t streams = PL_copy_term_ref(Streams);
term_t available = PL_copy_term_ref(Available);
term_t ahead = PL_new_term_ref();
int from_buffer = 0;
atom_t a;
FD_ZERO(&fds);
while( PL_get_list(streams, head, streams) )
{ IOSTREAM *s;
#ifdef __WINDOWS__
nbio_sock_t fd;
#else
int fd;
#endif
fdentry *e;
if ( !PL_get_stream_handle(head, &s) )
return FALSE;
#ifdef __WINDOWS__
fd = fdFromHandle(s->handle);
#else
fd = Sfileno(s);
#endif
PL_release_stream(s);
if ( fd < 0 || !is_socket_stream(s) )
{ return pl_error("tcp_select", 3, NULL, ERR_DOMAIN,
head, "socket_stream");
}
/* check for input in buffer */
if ( s->bufp < s->limitp )
{ if ( !PL_unify_list(available, ahead, available) ||
!PL_unify(ahead, head) )
return FALSE;
from_buffer++;
}
e = alloca(sizeof(*e));
e->fd = fd;
e->stream = PL_copy_term_ref(head);
e->next = map;
map = e;
#ifdef __WINDOWS__
FD_SET((SOCKET)fd, &fds);
#else
FD_SET(fd, &fds);
#endif
if ( fd > max )
max = fd;
if( fd < min )
min = fd;
}
if ( !PL_get_nil(streams) )
return pl_error("tcp_select", 3, NULL, ERR_TYPE, Streams, "list");
if ( from_buffer > 0 )
return PL_unify_nil(available);
if ( PL_get_atom(timeout, &a) && a == ATOM_infinite )
{ to = NULL;
} else
{ if ( !PL_get_float(timeout, &time) )
return pl_error("tcp_select", 3, NULL,
ERR_TYPE, timeout, "number");
if ( time >= 0.0 )
{ t.tv_sec = (int)time;
t.tv_usec = ((int)(time * 1000000) % 1000000);
} else
{ t.tv_sec = 0;
t.tv_usec = 0;
}
to = &t;
}
while( (ret=nbio_select(max+1, &fds, NULL, NULL, to)) == -1 &&
errno == EINTR )
{ fdentry *e;
if ( PL_handle_signals() < 0 )
return FALSE; /* exception */
FD_ZERO(&fds); /* EINTR may leave fds undefined */
for(e=map; e; e=e->next) /* so we rebuild it to be safe */
{ FD_SET((SOCKET)e->fd, &fds);
}
}
switch(ret)
{ case -1:
return pl_error("tcp_select", 3, NULL, ERR_ERRNO, errno, "select", "streams", Streams);
case 0: /* Timeout */
break;
default: /* Something happened -> check fds */
for(n=min; n <= max; n++)
{ if ( FD_ISSET(n, &fds) )
{ if ( !PL_unify_list(available, ahead, available) ||
!PL_unify(ahead, findmap(map, n)) )
return FALSE;
}
}
break;
}
return PL_unify_nil(available);
}
static foreign_t
current_alarms(term_t time, term_t goal, term_t id, term_t status,
term_t matching)
{ Event ev;
term_t next = PL_new_term_ref();
term_t g = PL_new_term_ref();
term_t tail = PL_copy_term_ref(matching);
term_t head = PL_new_term_ref();
term_t av = PL_new_term_refs(4);
pthread_t self = pthread_self();
LOCK();
ev = TheSchedule()->first;
for(; ev; ev = ev->next)
{ atom_t s;
double at;
fid_t fid;
if ( !pthread_equal(self, ev->thread_id) )
continue;
fid = PL_open_foreign_frame();
if ( ev->flags & EV_DONE )
s = ATOM_done;
else if ( ev == TheSchedule()->scheduled )
s = ATOM_next;
else
s = ATOM_scheduled;
if ( !PL_unify_atom(status, s) )
goto nomatch;
PL_recorded(ev->goal, g);
if ( !PL_unify_term(goal,
PL_FUNCTOR, FUNCTOR_module2,
PL_ATOM, PL_module_name(ev->module),
PL_TERM, g) )
goto nomatch;
at = (double)ev->at.tv_sec + (double)ev->at.tv_usec / 1000000.0;
if ( !PL_unify_float(time, at) )
goto nomatch;
if ( !unify_timer(id, ev) )
goto nomatch;
PL_discard_foreign_frame(fid);
if ( !PL_put_float(av+0, at) || /* time */
!PL_recorded(ev->goal, av+1) || /* goal */
!PL_put_variable(av+2) || /* id */
!unify_timer(av+2, ev) ||
!PL_put_atom(av+3, s) || /* status */
!PL_cons_functor_v(next, FUNCTOR_alarm4, av) )
{ PL_close_foreign_frame(fid);
UNLOCK();
return FALSE;
}
if ( PL_unify_list(tail, head, tail) &&
PL_unify(head, next) )
{ continue;
} else
{ PL_close_foreign_frame(fid);
UNLOCK();
return FALSE;
}
nomatch:
PL_discard_foreign_frame(fid);
}
UNLOCK();
return PL_unify_nil(tail);
}
