ETERM *body_set_collision_circle(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *radiusp = erl_element(3, argp);
ETERM *collision_typep = erl_element(4, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
cpShape *shape = cpSpaceAddShape(s->space,
cpCircleShapeNew(b->body, ERL_FLOAT_VALUE(radiusp),
cpvzero));
cpShapeSetCollisionType(shape, ERL_INT_VALUE(collision_typep));
// DEBUGF(("body_set_collision_circle has succeeded"));
return NULL;
}
static int hello_getattr(const char *path, struct stat *stbuf)
{
ETERM * response = erl_rpc(FERL_DATA->erlang_fd,"gen_server","call",erl_format("[nefs,{get_attr,~s}]",path));
ETERM * pattern = erl_format("{directory,Mode,Nlink}");
ETERM * pattern2 = erl_format("{file,Mode,Nlink,Size}");
int res = 0;
memset(stbuf, 0, sizeof(struct stat));
if(erl_match(pattern, response)) { //directory
ETERM * Mode = erl_var_content(pattern, "Mode");
ETERM * Nlink = erl_var_content(pattern, "Nlink");
if(ERL_IS_INTEGER(Nlink) && ERL_IS_INTEGER(Mode)){
stbuf->st_mode = S_IFDIR | ERL_INT_VALUE(Mode); //permissions
stbuf->st_nlink = ERL_INT_VALUE(Nlink); // directories have the number of files in them
}else{
res = -ENOENT;
}
}else if(erl_match(pattern2, response)){ //file
ETERM * Mode = erl_var_content(pattern2, "Mode");
ETERM * Nlink = erl_var_content(pattern2, "Nlink");
ETERM * Size = erl_var_content(pattern2, "Size");
if(ERL_IS_INTEGER(Nlink) && ERL_IS_INTEGER(Mode) && ERL_IS_INTEGER(Size)){
stbuf->st_mode = S_IFREG | ERL_INT_VALUE(Mode); //permissions
stbuf->st_nlink = ERL_INT_VALUE(Nlink); //files only have 1
stbuf->st_size = ERL_INT_VALUE(Size); // length of the file
}else{
res = -ENOENT;
}
}else{
res = -ENOENT;
}
return res;
}
int main() {
ETERM *tuplep, *intp;
ETERM *fnp, *argp;
int res;
byte buf[100];
long allocated, freed;
erl_init(NULL, 0);
while (read_cmd(buf) > 0) {
tuplep = erl_decode(buf);
fnp = erl_element(1, tuplep);
argp = erl_element(2, tuplep);
if (strncmp(ERL_ATOM_PTR(fnp), "foo", 3) == 0) {
res = foo(ERL_INT_VALUE(argp));
} else if (strncmp(ERL_ATOM_PTR(fnp), "bar", 17) == 0) {
res = bar(ERL_INT_VALUE(argp));
}
intp = erl_mk_int(res);
erl_encode(intp, buf);
write_cmd(buf, erl_term_len(intp));
erl_free_compound(tuplep);
erl_free_term(fnp);
erl_free_term(argp);
erl_free_term(intp);
}
}
ETERM *body_copy(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *from_idp = erl_element(3, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
int from_body_id = ERL_INT_VALUE(from_idp);
erlmunk_body *from_b;
HASH_FIND_INT(s->bodies, &from_body_id, from_b);
// DEBUGF(("copying location from body #%d(%p) to #%d(%p)",
// from_body_id, from_b, body_id, b));
// copy position and angle from the from body
cpBodySetPosition(b->body, cpBodyGetPosition(from_b->body));
cpBodySetAngle(b->body, cpBodyGetAngle(from_b->body));
cpBodySetVelocity(b->body, cpBodyGetVelocity(from_b->body));
return NULL;
}
static int is_printable_list(const ETERM* term)
{
while (ERL_TYPE(term) == ERL_LIST) {
ETERM* head = HEAD(term);
if (!ERL_IS_BYTE(head)) {
return 0;
}
if (ERL_INT_VALUE(head) < ' ') {
switch (ERL_INT_VALUE(head)) {
case '\n':
case '\r':
case '\t':
case '\v':
case '\b':
case '\f':
break;
default:
return 0;
}
}
term = TAIL(term);
}
return ERL_IS_EMPTY_LIST(term);
}
ETERM * new_image_blank(ETERM *arg, int c_node) {
int stride, cbufsize, status, key_length;
ETERM *width, *height;
cairo_context *ctx = NULL;
width = erl_element(1, arg);
height = erl_element(2, arg);
stride = ERL_INT_VALUE(width) * 4;
cbufsize = ERL_INT_VALUE(height) * stride;
ctx = malloc(sizeof(cairo_context));
if (ctx) {
ctx->cbuf = (byte *)malloc(cbufsize);
if (ctx->cbuf) {
memset(ctx->cbuf, 0, cbufsize);
ctx->sf = cairo_image_surface_create_for_data(ctx->cbuf,
CAIRO_FORMAT_ARGB32, ERL_INT_VALUE(width),
ERL_INT_VALUE(height), stride);
ctx->cr = cairo_create(ctx->sf);
return erl_format("{c_node, ~i, {ok, ~i}}", c_node, ctx);
} else {
free(ctx);
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
} else {
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
erl_free_term(width);
erl_free_term(height);
}
int main(int argc, char **argv) {
int fd; /* fd to Erlang node */
int loop = 1; /* Loop flag */
int got; /* Result of receive */
unsigned char buf[BUFSIZE]; /* Buffer for incoming message */
ErlMessage emsg; /* Incoming message */
ETERM *fromp, *tuplep, *fnp, *argp, *resp;
int res;
erl_init(NULL, 0);
if (erl_connect_init(1, "secretcookie", 0) == -1)
erl_err_quit("erl_connect_init");
if ((fd = erl_connect("e1@hostname")) < 0)
erl_err_quit("erl_connect");
fprintf(stderr, "Connected to e1@hostname\n\r");
while (loop) {
got = erl_receive_msg(fd, buf, BUFSIZE, &emsg);
if (got == ERL_TICK) {
/* ignore */
} else if (got == ERL_ERROR) {
loop = 0;
} else {
if (emsg.type == ERL_REG_SEND) {
fromp = erl_element(1, emsg.msg);
tuplep = erl_element(2, emsg.msg);
fnp = erl_element(1, tuplep);
argp = erl_element(2, tuplep);
if (strncmp(ERL_ATOM_PTR(fnp), "foo", 3) == 0) {
res = foo(ERL_INT_VALUE(argp));
} else if (strncmp(ERL_ATOM_PTR(fnp), "bar", 3) == 0) {
res = bar(ERL_INT_VALUE(argp));
}
resp = erl_format("{cnode, ~i}", res);
erl_send(fd, fromp, resp);
erl_free_term(emsg.from); erl_free_term(emsg.msg);
erl_free_term(fromp); erl_free_term(tuplep);
erl_free_term(fnp); erl_free_term(argp);
erl_free_term(resp);
}
}
}
}
ETERM * line_to(ETERM* arg, int c_node) {
ETERM *x, *y;
cairo_context *ctx = get_cairo_context(arg);
if (ctx) {
x = erl_element(2, arg);
y = erl_element(3, arg);
cairo_line_to(ctx->cr, ERL_INT_VALUE(x), ERL_INT_VALUE(y));
erl_free_term(x);
erl_free_term(y);
return erl_format("{c_node, ~i, ok}", c_node);
} else {
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
}
ETERM *space_add_boundaries(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *lower_leftp = erl_element(2, argp);
ETERM *lower_rightp = erl_element(3, argp);
ETERM *upper_leftp = erl_element(4, argp);
ETERM *upper_rightp = erl_element(5, argp);
ETERM *collision_categoryp = erl_element(6, argp);
ETERM *datap = erl_element(7, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
cpVect lowerLeft = cpv(ERL_FLOAT_VALUE(erl_element(1, lower_leftp)),
ERL_FLOAT_VALUE(erl_element(2, lower_leftp)));
cpVect lowerRight = cpv(ERL_FLOAT_VALUE(erl_element(1, lower_rightp)),
ERL_FLOAT_VALUE(erl_element(2, lower_rightp)));
cpVect upperLeft = cpv(ERL_FLOAT_VALUE(erl_element(1, upper_leftp)),
ERL_FLOAT_VALUE(erl_element(2, upper_leftp)));
cpVect upperRight = cpv(ERL_FLOAT_VALUE(erl_element(1, upper_rightp)),
ERL_FLOAT_VALUE(erl_element(2, upper_rightp)));
// get the static body that comes with the space
cpBody *static_body = cpSpaceGetStaticBody(s->space);
erlmunk_body_data *data = malloc(sizeof(erlmunk_body_data));
data->id = BOUNDARY_BODY_ID;
data->term = erl_copy_term(datap);
cpBodySetUserData(static_body, (cpDataPointer) data);
// bottom
cpShape *bottomBoundaryShape = cpSegmentShapeNew(static_body, lowerLeft, lowerRight, 0.0f);
cpShapeSetCollisionType(bottomBoundaryShape, ERL_INT_VALUE(collision_categoryp));
cpSpaceAddShape(s->space, bottomBoundaryShape);
// top
cpShape *topBoundaryShape = cpSegmentShapeNew(static_body, upperLeft, upperRight, 0.0f);
cpShapeSetCollisionType(topBoundaryShape, ERL_INT_VALUE(collision_categoryp));
cpSpaceAddShape(s->space, topBoundaryShape);
// left
cpShape *leftBoundaryShape = cpSegmentShapeNew(static_body, lowerLeft, upperLeft, 0.0f);
cpShapeSetCollisionType(leftBoundaryShape, ERL_INT_VALUE(collision_categoryp));
cpSpaceAddShape(s->space, leftBoundaryShape);
// right
cpShape *rightBoundaryShape = cpSegmentShapeNew(static_body, lowerRight, upperRight, 0.0f);
cpShapeSetCollisionType(rightBoundaryShape, ERL_INT_VALUE(collision_categoryp));
cpSpaceAddShape(s->space, rightBoundaryShape);
return NULL;
}
ETERM *space_add_body(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *massp = erl_element(3, argp);
// ETERM *inertiap = erl_element(4, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int object_id = ERL_INT_VALUE(idp);
cpBody *body = cpSpaceAddBody(s->space,
cpBodyNew(ERL_FLOAT_VALUE(massp),
INFINITY));
// the body is created inactive, it is explicitly activated
// when all it's values have been set.
cpBodySleep(body);
erlmunk_body_data *data = malloc(sizeof(erlmunk_body_data));
data->id = object_id;
data->term = NULL;
cpBodySetUserData(body, (cpDataPointer) data);
space_add_body_hash(s, object_id, body);
return NULL;
}
response_t set_queue_len(int len, ETERM *tuplep, q_data_t **q_data, thread_data_t *data) {
int q_num, cq_idx;
ETERM *arg;
response_t r;
if(erl_size(tuplep) > 2) {
arg = erl_element(3, tuplep);
q_num = ERL_INT_VALUE(arg);
erl_free_term(arg);
syslog(LOG_NOTICE,"[%d] q_num: %d, len: %d\n\r", data->idx, q_num, len);
if((cq_idx = get_queue_idx(q_num, q_data)) >= 0) {
if(nfq_set_queue_maxlen(q_data[cq_idx]->qh, len) >= 0) {
r.cs = erl_mk_atom("ok");
r.rsp = erl_mk_atom("ok");
} else {
r.cs = erl_mk_atom("error");
r.rsp = erl_mk_estring("failed to set queue max length", strlen("failed to set queue max length"));
}
} else {
r.cs = erl_mk_atom("error");
r.rsp = erl_mk_estring("no such queue", strlen("no such queue"));
}
} else {
r.cs = erl_mk_atom("error");
r.rsp = erl_mk_estring("argument missing", strlen("argument missing"));
}
return r;
}
att_type* get_atts_types(ETERM* term)
{
lst point;
int len = erl_length(term), i;
att_type* res = (att_type*) malloc(len * sizeof(att_type));
att_type tmp;
next(term, &point);
for (i=0; i<len; i++)
{
switch (ERL_INT_VALUE(point.head))
{
case 0:
tmp = nominal;
break;
case 1:
tmp = continuous;
break;
}
res[i] = tmp;
next(term, &point);
}
return res;
}
/**
* @brief Port interface for gpio_write
*/
int
port_gpio_write (int pin, ETERM *valuet)
{
int value;
value = ERL_INT_VALUE(valuet);
return gpio_write(pin, value);
}
ETERM * curve_to(ETERM* arg, int c_node) {
ETERM *c1x, *c1y, *c2x, *c2y, *x, *y;
cairo_context *ctx = get_cairo_context(arg);
if (ctx) {
c1x = erl_element(2, arg);
c1y = erl_element(3, arg);
c2x = erl_element(4, arg);
c2y = erl_element(5, arg);
x = erl_element(6, arg);
y = erl_element(7, arg);
cairo_curve_to(ctx->cr, ERL_INT_VALUE(c1x),
val(c1y),
val(c2x),
val(c2y),
val(x),
val(y));
erl_free_term(c1x);
erl_free_term(c1y);
erl_free_term(c2x);
erl_free_term(c2y);
erl_free_term(x);
erl_free_term(y);
return erl_format("{c_node, ~i, ok}", c_node);
} else {
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
}
ETERM *space_remove_body(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b = NULL;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
// DEBUGF(("removing body #%d\n", body_id));
// remove the user data associated with the body
erlmunk_body_data *data = cpBodyGetUserData(b->body);
if (data->term != NULL)
erl_free_compound(data->term);
free(data);
cpBodyEachShape(b->body, shapeRemove, NULL);
cpSpaceRemoveBody(s->space, b->body);
space_remove_body_hash(s, b);
cpBodyDestroy(b->body);
cpBodyFree(b->body);
return NULL;
}
static int process_command(byte *buf)
{
int retval = 0;
ETERM *pattern, *tuple, *cmd, *port, *data;
pattern = erl_format("{Cmd, Port, Data}");
tuple = erl_decode(buf);
if (erl_match(pattern, tuple))
{
cmd = erl_var_content(pattern, "Cmd");
port = erl_var_content(pattern, "Port");
data = erl_var_content(pattern, "Data");
switch (ERL_INT_VALUE(cmd))
{
case CMD_AUTH:
retval = process_auth(port, data);
break;
case CMD_ACCT:
retval = process_acct(port, data);
break;
};
erl_free_term(cmd);
erl_free_term(port);
erl_free_term(data);
}
erl_free_term(pattern);
erl_free_term(tuple);
return retval;
}
static void iolist_to_buf(const ETERM* term, char** bufp)
{
char* dest = *bufp;
while (ERL_IS_CONS(term)) {
ETERM* obj = HEAD(term);
if (ERL_IS_BYTE(obj)) {
*dest++ = ERL_INT_VALUE(obj);
} else if (ERL_IS_CONS(obj)) {
iolist_to_buf(obj, &dest);
} else if (ERL_IS_BINARY(obj)) {
memcpy(dest, ERL_BIN_PTR(obj), ERL_BIN_SIZE(obj));
dest += ERL_BIN_SIZE(obj);
} else {
/*
* Types have been checked by caller.
*/
if (!ERL_IS_EMPTY_LIST(obj)) return;
/* ASSERT(ERL_IS_EMPTY_LIST(obj)); */
}
term = TAIL(term);
}
if (ERL_IS_BINARY(term)) {
memcpy(dest, ERL_BIN_PTR(term), ERL_BIN_SIZE(term));
dest += ERL_BIN_SIZE(term);
} else {
/*
* Types have been checked by caller.
*/
if (!ERL_IS_EMPTY_LIST(term)) return;
/* ASSERT(ERL_IS_EMPTY_LIST(term));*/
}
*bufp = dest;
}
ETERM *erl_mk_estring(const char *s, int len)
{
ETERM *ep;
int i;
if ((!s) || (len < 0)) return NULL;
/*
* ASSERT(s != NULL);
* ASSERT(len >= 0);
*/
ep = erl_mk_empty_list();
for (i = len-1; i >= 0; i--) {
ETERM* integer;
ETERM* cons;
integer = erl_alloc_eterm(ERL_INTEGER);
ERL_COUNT(integer) = 1;
ERL_INT_VALUE(integer) = (unsigned char)s[i];
cons = erl_alloc_eterm(ERL_LIST);
ERL_COUNT(cons) = 1;
HEAD(cons) = integer;
TAIL(cons) = ep;
ep = cons;
}
return ep;
}
static int print_string(FILE* fp, const ETERM* ep)
{
int ch_written = 0; /* counter of written chars */
putc('"', fp);
ch_written++;
while (ERL_IS_CONS(ep)) {
int c = ERL_INT_VALUE(HEAD(ep));
if (c >= ' ') {
putc(c, fp);
ch_written++;
}
else {
switch (c) {
case '\n': fputs("\\n", fp); ch_written += 2; break;
case '\r': fputs("\\r", fp); ch_written += 2; break;
case '\t': fputs("\\t", fp); ch_written += 2; break;
case '\v': fputs("\\v", fp); ch_written += 2; break;
case '\b': fputs("\\b", fp); ch_written += 2; break;
case '\f': fputs("\\f", fp); ch_written += 2; break;
break;
default:
ch_written += fprintf(fp, "\\%o", c);
break;
}
}
ep = TAIL(ep);
}
putc('"', fp);
ch_written++;
return ch_written;
}
static int
process_command(unsigned char *buf)
{
int retval = 0;
ETERM *pattern, *tuple, *cmd, *port, *data;
pattern = erl_format("{Cmd, Port, Data}");
tuple = erl_decode(buf);
if (erl_match(pattern, tuple)) {
cmd = erl_var_content(pattern, "Cmd");
port = erl_var_content(pattern, "Port");
data = erl_var_content(pattern, "Data");
switch (ERL_INT_VALUE(cmd)) {
case CMD_SALT:
retval = process_encode_salt(port, data);
break;
case CMD_HASHPW:
retval = process_hashpw(port, data);
break;
};
erl_free_term(cmd);
erl_free_term(port);
erl_free_term(data);
}
erl_free_term(pattern);
erl_free_term(tuple);
return retval;
}
static VALUE erlix_uint_to_fix(VALUE self){
ErlixTerm *euint;
unsigned int l;
Data_Get_Struct(self,ErlixTerm,euint);
l=ERL_INT_VALUE(euint->term);
return INT2FIX(l);
}
ETERM *body_apply_impulse(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *impulsep = erl_element(3, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
// apply the impulse at the center of the body and along it's current angle
float angle = deg_to_rad(cpBodyGetAngle(b->body));
cpVect angleV = cpvforangle(angle);
cpVect impulse = cpvmult(angleV, ERL_FLOAT_VALUE(impulsep));
cpBodyApplyImpulseAtWorldPoint(b->body, impulse, angleV);
return NULL;
}
ETERM *body_get_user_data(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
erlmunk_space *s;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
erlmunk_body_data *data = cpBodyGetUserData(b->body);
ETERM *datap = erl_copy_term(data->term);
ETERM *atom_ok = erl_mk_atom("ok");
ETERM **body_get_data_array = (ETERM **) malloc(sizeof(ETERM*) * 2);
body_get_data_array[0] = atom_ok;
body_get_data_array[1] = datap;
ETERM *body_get_data_tuple = erl_mk_tuple(body_get_data_array, 2);
free(body_get_data_array);
ETERM *reply_tuple = erl_mk_reply(fromp, body_get_data_tuple);
ETERM *gen_cast_tuple = erl_mk_gen_cast(reply_tuple);
return gen_cast_tuple;
}
ETERM *body_update_position(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *deltap = erl_element(3, argp);
erlmunk_space *s = NULL;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b = NULL;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
cpVect position = cpBodyGetPosition(b->body);
float angle = deg_to_rad(cpBodyGetAngle(b->body));
cpVect angleV = cpvforangle(angle);
cpVect projection = cpvmult(angleV, ERL_FLOAT_VALUE(deltap));
cpVect new_position = cpvadd(projection, position);
cpBodySetPosition(b->body, new_position);
// DEBUGF(("body_update_position(x: %f, y: %f, delta: %f) has succeeded (x: %f, y: %f)",
// position.x, position.y, ERL_FLOAT_VALUE(deltap),
// new_position.x, new_position.y));
return NULL;
}
ETERM *body_set_position(ETERM *fromp, ETERM *argp) {
// get the args
ETERM *space_refp = erl_element(1, argp);
ETERM *idp = erl_element(2, argp);
ETERM *vectorp = erl_element(3, argp);
ETERM *xp = erl_element(1, vectorp);
ETERM *yp = erl_element(2, vectorp);
erlmunk_space *s = NULL;
int space_id = ERL_REF_NUMBER(space_refp);
HASH_FIND_INT(erlmunk_spaces, &space_id, s);
int body_id = ERL_INT_VALUE(idp);
erlmunk_body *b = NULL;
HASH_FIND_INT(s->bodies, &body_id, b);
if (b == NULL)
return NULL;
cpBodySetPosition(b->body, cpv(ERL_FLOAT_VALUE(xp),
ERL_FLOAT_VALUE(yp)));
// DEBUGF(("body_set_position(x: %f, y: %f) has succeeded",
// ERL_FLOAT_VALUE(xp), ERL_FLOAT_VALUE(yp)));
return NULL;
}
/*
* Create an INTEGER. Depending on its value it
* may end up as a BigNum.
*/
ETERM *erl_mk_int (int i)
{
ETERM *ep;
ep = erl_alloc_eterm(ERL_INTEGER);
ERL_COUNT(ep) = 1;
ERL_INT_VALUE(ep) = i;
return ep;
}
double val(ETERM *arg) {
if (ERL_IS_INTEGER(arg))
return ERL_INT_VALUE(arg);
else if (ERL_IS_FLOAT(arg))
return ERL_FLOAT_VALUE(arg);
else {
exit(EXIT_FAILURE);
return 0;
}
}
ETERM * set_line_width(ETERM* arg, int c_node) {
ETERM *width;
cairo_context *ctx = get_cairo_context(arg);
if (ctx) {
width = erl_element(2, arg);
cairo_set_line_width(ctx->cr, ERL_INT_VALUE(width));
erl_free_term(width);
return erl_format("{c_node, ~i, ok}", c_node);
} else {
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
}
ETERM * set_operator(ETERM* arg, int c_node) {
ETERM *operator;
cairo_context *ctx = get_cairo_context(arg);
if (ctx) {
operator = erl_element(2, arg);
cairo_set_operator(ctx->cr, ERL_INT_VALUE(operator));
erl_free_term(operator);
return erl_format("{c_node, ~i, ok}", c_node);
} else {
return erl_format("{c_node, ~i, {error, '~s'}}", c_node, ERR_CONTEXT);
}
}
bool command::process(term & t)
{
bool ret = false;
term resp;
#ifdef PRINTCMD
char * tmpbuf = print_term(command);
REMOTE_LOG(DBG, "========================================\nCOMMAND : %s %s\n========================================\n",
CMD_NAME_STR(ERL_INT_VALUE(cmd)),
tmpbuf);
delete tmpbuf;
#endif
if(t.is_tuple() && t[1].is_integer()) {
int cmd = t[1].v.i;
resp.tuple();
resp.add(t[0]);
resp.insert().integer(cmd);
if((t.length() - 1) != (size_t)CMD_ARGS_COUNT(cmd)) {
term & _t = resp.insert().tuple();
_t.insert().atom("error");
_t.insert().atom("badarg");
if(resp.is_undef())
REMOTE_LOG(ERR, "ERROR badarg %s expected %d, got %d\n", CMD_NAME_STR(cmd)
, CMD_ARGS_COUNT(cmd), (t.length() - 1));
if(resp.is_undef()) REMOTE_LOG(CRT, "driver error: no resp generated, shutting down port\n");
vector<unsigned char> respv = tc.encode(resp);
p.write_cmd(respv);
} else {
switch(cmd) {
case RMOTE_MSG: ret = change_log_flag(t, resp); break;
case GET_SESSN: ret = get_session(t, resp); break;
case PUT_SESSN: ret = release_conn(t, resp); break;
case CMT_SESSN: ret = commit(t, resp); break;
case RBK_SESSN: ret = rollback(t, resp); break;
case CMD_DSCRB: ret = describe(t, resp); break;
case PREP_STMT: ret = prep_sql(t, resp); break;
case BIND_ARGS: ret = bind_args(t, resp); break;
case EXEC_STMT: ret = exec_stmt(t, resp); break;
case FTCH_ROWS: ret = fetch_rows(t, resp); break;
case CLSE_STMT: ret = close_stmt(t, resp); break;
case GET_LOBDA: ret = get_lob_data(t, resp); break;
case CMD_ECHOT: ret = echo(t, resp); break;
case SESN_PING: ret = ping(t, resp); break;
default:
ret = true;
break;
}
}
}
return ret;
}
