bool
pic_eq_p(pic_state *PIC_UNUSED(pic), pic_value x, pic_value y)
{
if (pic_type(pic, x) != pic_type(pic, y))
return false;
switch (pic_type(pic, x)) {
case PIC_TYPE_NIL:
return true;
case PIC_TYPE_TRUE:
case PIC_TYPE_FALSE:
return pic_type(pic, x) == pic_type(pic, y);
default:
return pic_obj_ptr(x) == pic_obj_ptr(y);
}
}
bool
pic_data_p(pic_state *pic, pic_value obj, const pic_data_type *type)
{
if (pic_type(pic, obj) != PIC_TYPE_DATA) {
return false;
}
return type == NULL || data_ptr(pic, obj)->type == type;
}
bool
pic_equal_p(pic_state *pic, pic_value x, pic_value y)
{
enum pic_tt type;
if (pic_eqv_p(x, y))
return true;
type = pic_type(x);
if (type != pic_type(y))
return false;
switch (type) {
case PIC_TT_PAIR:
return pic_equal_p(pic, pic_car(pic, x), pic_car(pic, y))
&& pic_equal_p(pic, pic_cdr(pic, x), pic_cdr(pic, y));
default:
return false;
}
}
static void
traverse(pic_state *pic, pic_value obj, struct writer_control *p)
{
pic_value shared = p->shared;
if (p->op == OP_WRITE_SIMPLE) {
return;
}
switch (pic_type(pic, obj)) {
case PIC_TYPE_PAIR:
case PIC_TYPE_VECTOR:
case PIC_TYPE_DICT: {
if (! pic_weak_has(pic, shared, obj)) {
/* first time */
pic_weak_set(pic, shared, obj, pic_int_value(pic, 0));
if (pic_pair_p(pic, obj)) {
/* pair */
traverse(pic, pic_car(pic, obj), p);
traverse(pic, pic_cdr(pic, obj), p);
} else if (pic_vec_p(pic, obj)) {
/* vector */
int i, len = pic_vec_len(pic, obj);
for (i = 0; i < len; ++i) {
traverse(pic, pic_vec_ref(pic, obj, i), p);
}
} else {
/* dictionary */
int it = 0;
pic_value val;
while (pic_dict_next(pic, obj, &it, NULL, &val)) {
traverse(pic, val, p);
}
}
if (p->op == OP_WRITE) {
if (pic_int(pic, pic_weak_ref(pic, shared, obj)) == 0) {
pic_weak_del(pic, shared, obj);
}
}
} else {
/* second time */
pic_weak_set(pic, shared, obj, pic_int_value(pic, 1));
}
break;
}
default:
break;
}
}
/* Print out all stored ID3v2 fields with their 4-character IDs. */
void print_raw_v2(mpg123_id3v2 *v2)
{
size_t i;
for(i=0; i<v2->texts; ++i)
{
char id[5];
char lang[4];
memcpy(id, v2->text[i].id, 4);
id[4] = 0;
memcpy(lang, v2->text[i].lang, 3);
lang[3] = 0;
if(v2->text[i].description.fill)
printf("%s language(%s) description(%s)\n", id, lang, v2->text[i].description.p);
else printf("%s language(%s)\n", id, lang);
print_lines(" ", &v2->text[i].text);
}
for(i=0; i<v2->extras; ++i)
{
char id[5];
memcpy(id, v2->extra[i].id, 4);
id[4] = 0;
printf( "%s description(%s)\n",
id,
v2->extra[i].description.fill ? v2->extra[i].description.p : "" );
print_lines(" ", &v2->extra[i].text);
}
for(i=0; i<v2->comments; ++i)
{
char id[5];
char lang[4];
memcpy(id, v2->comment_list[i].id, 4);
id[4] = 0;
memcpy(lang, v2->comment_list[i].lang, 3);
lang[3] = 0;
printf( "%s description(%s) language(%s):\n",
id,
v2->comment_list[i].description.fill ? v2->comment_list[i].description.p : "",
lang );
print_lines(" ", &v2->comment_list[i].text);
}
for(i=0; i<v2->pictures; ++i)
{
mpg123_picture* pic;
pic = &v2->picture[i];
fprintf(stderr, "APIC type(%i, %s) mime(%s) size(%"SIZE_P")\n",
pic->type, pic_type(pic->type), pic->mime_type.p, (size_p)pic->size);
print_lines(" ", &pic->description);
}
}
/* Construct a sane file name without introducing spaces, then open.
Example: /some/where/some.mp3.front_cover.jpeg
If multiple ones are there: some.mp3.front_cover2.jpeg */
int open_picfile(const char* prefix, mpg123_picture* pic)
{
char *end, *typestr, *pfn;
const char* pictype;
size_t i, len;
int fd;
unsigned long count = 1;
pictype = pic_type(pic->type);
len = strlen(pictype);
if(!(typestr = malloc(len+1))) exit(11);
memcpy(typestr, pictype, len);
for(i=0; i<len; ++i) if(typestr[i] == ' ') typestr[i] = '_';
typestr[len] = 0;
end = mime2end(&pic->mime_type);
len = strlen(prefix)+1+strlen(typestr)+1+strlen(end);
if(!(pfn = malloc(len+1))) exit(11);
sprintf(pfn, "%s.%s.%s", prefix, typestr, end);
pfn[len] = 0;
errno = 0;
fd = compat_open(pfn, O_CREAT|O_WRONLY|O_EXCL);
while(fd < 0 && errno == EEXIST && ++count < ULONG_MAX)
{
char dum;
size_t digits;
digits = snprintf(&dum, 1, "%lu", count);
if(!(pfn=safe_realloc(pfn, len+digits+1))) exit(11);
sprintf(pfn, "%s.%s%lu.%s", prefix, typestr, count, end);
pfn[len+digits] = 0;
errno = 0;
fd = compat_open(pfn, O_CREAT|O_WRONLY|O_EXCL);
}
printf("writing %s\n", pfn);
if(fd < 0)
{
error("Cannot open for writing (counter exhaust? permissions?).");
++errors;
}
free(end);
free(typestr);
free(pfn);
return fd;
}
static pic_value
pic_system_emergency_exit(pic_state *pic)
{
pic_value v;
int argc, status = EXIT_FAILURE;
argc = pic_get_args(pic, "|o", &v);
if (argc == 1) {
switch (pic_type(v)) {
case PIC_TT_FLOAT:
status = (int)pic_float(v);
break;
case PIC_TT_INT:
status = pic_int(v);
break;
default:
break;
}
}
_Exit(status);
}
int
pic_get_args(pic_state *pic, const char *format, ...)
{
char c;
int i = 1, argc = pic->ci->argc;
va_list ap;
bool opt = false;
va_start(ap, format);
while ((c = *format++)) {
switch (c) {
default:
if (argc <= i && ! opt) {
pic_error(pic, "wrong number of arguments");
}
break;
case '|':
break;
case '*':
break;
}
/* in order to run out of all arguments passed to this function
(i.e. do va_arg for each argument), optional argument existence
check is done in every case closure */
if (c == '*')
break;
switch (c) {
case '|':
opt = true;
break;
case 'o': {
pic_value *p;
p = va_arg(ap, pic_value*);
if (i < argc) {
*p = GET_OPERAND(pic,i);
i++;
}
break;
}
case 'f': {
double *f;
f = va_arg(ap, double *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*f = pic_float(v);
break;
case PIC_TT_INT:
*f = pic_int(v);
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
break;
}
case 'F': {
double *f;
bool *e;
f = va_arg(ap, double *);
e = va_arg(ap, bool *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*f = pic_float(v);
*e = false;
break;
case PIC_TT_INT:
*f = pic_int(v);
*e = true;
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
break;
}
case 'I': {
int *k;
bool *e;
k = va_arg(ap, int *);
e = va_arg(ap, bool *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*k = (int)pic_float(v);
*e = false;
break;
case PIC_TT_INT:
*k = pic_int(v);
*e = true;
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
break;
}
case 'i': {
int *k;
k = va_arg(ap, int *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*k = (int)pic_float(v);
break;
case PIC_TT_INT:
*k = pic_int(v);
break;
default:
pic_error(pic, "pic_get_args: expected int");
}
i++;
}
break;
}
case 's': {
pic_str **str;
pic_value v;
str = va_arg(ap, pic_str **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_str_p(v)) {
*str = pic_str_ptr(v);
}
else {
pic_error(pic, "pic_get_args: expected string");
}
i++;
}
break;
}
case 'z': {
pic_value str;
const char **cstr;
cstr = va_arg(ap, const char **);
if (i < argc) {
str = GET_OPERAND(pic,i);
if (! pic_str_p(str)) {
pic_error(pic, "pic_get_args: expected string");
}
*cstr = pic_str_cstr(pic_str_ptr(str));
i++;
}
break;
}
case 'm': {
pic_sym *m;
pic_value v;
m = va_arg(ap, pic_sym *);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_sym_p(v)) {
*m = pic_sym(v);
}
else {
pic_error(pic, "pic_get_args: expected symbol");
}
i++;
}
break;
}
case 'v': {
struct pic_vector **vec;
pic_value v;
vec = va_arg(ap, struct pic_vector **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_vec_p(v)) {
*vec = pic_vec_ptr(v);
}
else {
pic_error(pic, "pic_get_args: expected vector");
}
i++;
}
break;
}
case 'b': {
struct pic_blob **b;
pic_value v;
b = va_arg(ap, struct pic_blob **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_blob_p(v)) {
*b = pic_blob_ptr(v);
}
else {
pic_error(pic, "pic_get_args: expected bytevector");
}
i++;
}
break;
}
case 'c': {
char *c;
pic_value v;
c = va_arg(ap, char *);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_char_p(v)) {
*c = pic_char(v);
}
else {
pic_error(pic, "pic_get_args: expected char");
}
i++;
}
break;
}
case 'l': {
struct pic_proc **l;
pic_value v;
l = va_arg(ap, struct pic_proc **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_proc_p(v)) {
*l = pic_proc_ptr(v);
}
else {
pic_error(pic, "pic_get_args, expected procedure");
}
i++;
}
break;
}
case 'p': {
struct pic_port **p;
pic_value v;
p = va_arg(ap, struct pic_port **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_port_p(v)) {
*p = pic_port_ptr(v);
}
else {
pic_error(pic, "pic_get_args, expected port");
}
i++;
}
break;
}
default:
pic_error(pic, "pic_get_args: invalid argument specifier given");
}
}
if ('*' == c) {
size_t *n;
pic_value **argv;
n = va_arg(ap, size_t *);
argv = va_arg(ap, pic_value **);
if (i <= argc) {
*n = argc - i;
*argv = &GET_OPERAND(pic, i);
i = argc;
}
}
static void
write_core(pic_state *pic, pic_value obj, pic_value port, struct writer_control *p)
{
pic_value labels = p->labels;
int i;
/* shared objects */
if (is_shared_object(pic, obj, p)) {
if (pic_weak_has(pic, labels, obj)) {
pic_fprintf(pic, port, "#%d#", pic_int(pic, pic_weak_ref(pic, labels, obj)));
return;
}
i = p->cnt++;
pic_fprintf(pic, port, "#%d=", i);
pic_weak_set(pic, labels, obj, pic_int_value(pic, i));
}
switch (pic_type(pic, obj)) {
case PIC_TYPE_UNDEF:
pic_fprintf(pic, port, "#undefined");
break;
case PIC_TYPE_NIL:
pic_fprintf(pic, port, "()");
break;
case PIC_TYPE_TRUE:
pic_fprintf(pic, port, "#t");
break;
case PIC_TYPE_FALSE:
pic_fprintf(pic, port, "#f");
break;
case PIC_TYPE_ID:
pic_fprintf(pic, port, "#<identifier %s>", pic_str(pic, pic_id_name(pic, obj)));
break;
case PIC_TYPE_EOF:
pic_fprintf(pic, port, "#.(eof-object)");
break;
case PIC_TYPE_INT:
pic_fprintf(pic, port, "%d", pic_int(pic, obj));
break;
case PIC_TYPE_SYMBOL:
pic_fprintf(pic, port, "%s", pic_sym(pic, obj));
break;
case PIC_TYPE_FLOAT:
write_float(pic, obj, port);
break;
case PIC_TYPE_BLOB:
write_blob(pic, obj, port);
break;
case PIC_TYPE_CHAR:
write_char(pic, obj, port, p);
break;
case PIC_TYPE_STRING:
write_str(pic, obj, port, p);
break;
case PIC_TYPE_PAIR:
write_pair(pic, obj, port, p);
break;
case PIC_TYPE_VECTOR:
write_vec(pic, obj, port, p);
break;
case PIC_TYPE_DICT:
write_dict(pic, obj, port, p);
break;
default:
pic_fprintf(pic, port, "#<%s %p>", pic_typename(pic, pic_type(pic, obj)), pic_obj_ptr(obj));
break;
}
if (p->op == OP_WRITE) {
if (is_shared_object(pic, obj, p)) {
pic_weak_del(pic, labels, obj);
}
}
}
static bool
internal_equal_p(pic_state *pic, pic_value x, pic_value y, size_t depth, xhash *ht)
{
pic_value local = pic_nil_value();
size_t c;
if (depth > 10) {
if (depth > 200) {
pic_errorf(pic, "Stack overflow in equal\n");
}
if (pic_pair_p(x) || pic_vec_p(x)) {
if (xh_get_ptr(ht, pic_obj_ptr(x)) != NULL) {
return true; /* `x' was seen already. */
} else {
xh_put_ptr(ht, pic_obj_ptr(x), NULL);
}
}
}
c = 0;
LOOP:
if (pic_eqv_p(x, y))
return true;
if (pic_type(x) != pic_type(y))
return false;
switch (pic_type(x)) {
case PIC_TT_STRING:
return str_equal_p(pic_str_ptr(x), pic_str_ptr(y));
case PIC_TT_BLOB:
return blob_equal_p(pic_blob_ptr(x), pic_blob_ptr(y));
case PIC_TT_PAIR: {
if (pic_nil_p(local)) {
local = x;
}
if (internal_equal_p(pic, pic_car(pic, x), pic_car(pic, y), depth + 1, ht)) {
x = pic_cdr(pic, x);
y = pic_cdr(pic, y);
c++;
if (c == 2) {
c = 0;
local = pic_cdr(pic, local);
if (pic_eq_p(local, x)) {
return true;
}
}
goto LOOP;
} else {
return false;
}
}
case PIC_TT_VECTOR: {
size_t i;
struct pic_vector *u, *v;
u = pic_vec_ptr(x);
v = pic_vec_ptr(y);
if (u->len != v->len) {
return false;
}
for (i = 0; i < u->len; ++i) {
if (! internal_equal_p(pic, u->data[i], v->data[i], depth + 1, ht))
return false;
}
return true;
}
default:
return false;
}
}
int
pic_get_args(pic_state *pic, const char *format, ...)
{
char c;
int i = 1, argc = pic->ci->argc;
va_list ap;
bool opt = false;
va_start(ap, format);
while ((c = *format++)) {
switch (c) {
default:
if (argc <= i && ! opt) {
pic_error(pic, "wrong number of arguments");
}
break;
case '|':
break;
}
/* in order to run out of all arguments passed to this function
(i.e. do va_arg for each argument), optional argument existence
check is done in every case closure */
switch (c) {
case '|':
opt = true;
break;
case 'o':
{
pic_value *p;
p = va_arg(ap, pic_value*);
if (i < argc) {
*p = GET_OPERAND(pic,i);
i++;
}
}
break;
case 'f':
{
double *f;
f = va_arg(ap, double *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*f = pic_float(v);
break;
case PIC_TT_INT:
*f = pic_int(v);
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
}
break;
case 'F':
{
double *f;
bool *e;
f = va_arg(ap, double *);
e = va_arg(ap, bool *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*f = pic_float(v);
*e = false;
break;
case PIC_TT_INT:
*f = pic_int(v);
*e = true;
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
}
break;
case 'I':
{
int *k;
bool *e;
k = va_arg(ap, int *);
e = va_arg(ap, bool *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*k = (int)pic_float(v);
*e = false;
break;
case PIC_TT_INT:
*k = pic_int(v);
*e = true;
break;
default:
pic_error(pic, "pic_get_args: expected float or int");
}
i++;
}
}
break;
case 'i':
{
int *k;
k = va_arg(ap, int *);
if (i < argc) {
pic_value v;
v = GET_OPERAND(pic, i);
switch (pic_type(v)) {
case PIC_TT_FLOAT:
*k = (int)pic_float(v);
break;
case PIC_TT_INT:
*k = pic_int(v);
break;
default:
pic_error(pic, "pic_get_args: expected int");
}
i++;
}
}
break;
case 's':
{
pic_value str;
char **cstr;
size_t *len;
cstr = va_arg(ap, char **);
len = va_arg(ap, size_t *);
if (i < argc) {
str = GET_OPERAND(pic,i);
if (! pic_str_p(str)) {
pic_error(pic, "pic_get_args: expected string");
}
*cstr = pic_str_ptr(str)->str;
*len = pic_str_ptr(str)->len;
i++;
}
}
break;
case 'v':
{
struct pic_vector **vec;
pic_value v;
vec = va_arg(ap, struct pic_vector **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_vec_p(v)) {
*vec = pic_vec_ptr(v);
}
else {
pic_error(pic, "pic_get_args: expected vector");
}
i++;
}
}
break;
case 'b':
{
struct pic_blob **b;
pic_value v;
b = va_arg(ap, struct pic_blob **);
if (i < argc) {
v = GET_OPERAND(pic,i);
if (pic_blob_p(v)) {
*b = pic_blob_ptr(v);
}
else {
pic_error(pic, "pic_get_args: expected bytevector");
}
i++;
}
}
break;
default:
{
pic_error(pic, "pic_get_args: invalid argument specifier given");
}
}
}
if (argc > i) {
pic_error(pic, "wrong number of arguments");
}
va_end(ap);
return i;
}
