static value_ptr extract_object(bplist_info_ptr bplist, uint64_t objectRef)
{
uint64_t offset;
value_ptr result = NULL;
uint8_t objectTag;
if (objectRef >= bplist->object_count) {
// Out-of-range object reference.
bplist_log("Bad binary plist: object index is out of range.\n");
return NULL;
}
// Use cached object if it exists
result = cache_lookup(bplist->cache, objectRef);
if (result != NULL) return result;
// Otherwise, find object in file.
offset = read_offset(bplist, objectRef);
if (offset > bplist->length) {
// Out-of-range offset.
bplist_log("Bad binary plist: object outside container.\n");
return NULL;
}
objectTag = *(bplist->data_bytes + offset);
switch (objectTag & 0xF0) {
case kTAG_SIMPLE:
result = extract_simple(bplist, offset);
break;
case kTAG_INT:
result = extract_int(bplist, offset);
break;
case kTAG_REAL:
result = extract_real(bplist, offset);
break;
case kTAG_DATE:
result = extract_date(bplist, offset);
break;
case kTAG_DATA:
result = extract_data(bplist, offset);
break;
case kTAG_ASCIISTRING:
result = extract_ascii_string(bplist, offset);
break;
case kTAG_UNICODESTRING:
result = extract_unicode_string(bplist, offset);
break;
case kTAG_UID:
result = extract_uid(bplist, offset);
break;
case kTAG_ARRAY:
result = extract_array(bplist, offset);
break;
case kTAG_DICTIONARY:
result = extract_dictionary(bplist, offset);
break;
default:
// Unknown tag.
bplist_log("Bad binary plist: unknown tag 0x%X.\n",
(objectTag & 0x0F) >> 4);
result = NULL;
}
// Cache and return result.
if (result != NULL)
cache_insert(&bplist->cache, objectRef, result);
return result;
}
static void
write_float (st_parameter_dt *dtp, const fnode *f, const char *source, int len)
{
GFC_REAL_LARGEST n;
int nb =0, res, save_scale_factor;
char * p, fin;
fnode *f2 = NULL;
n = extract_real (source, len);
if (f->format != FMT_B && f->format != FMT_O && f->format != FMT_Z)
{
res = isfinite (n);
if (res == 0)
{
nb = f->u.real.w;
/* If the field width is zero, the processor must select a width
not zero. 4 is chosen to allow output of '-Inf' or '+Inf' */
if (nb == 0) nb = 4;
p = write_block (dtp, nb);
if (p == NULL)
return;
if (nb < 3)
{
memset (p, '*',nb);
return;
}
memset(p, ' ', nb);
res = !isnan (n);
if (res != 0)
{
if (signbit(n))
{
/* If the sign is negative and the width is 3, there is
insufficient room to output '-Inf', so output asterisks */
if (nb == 3)
{
memset (p, '*',nb);
return;
}
/* The negative sign is mandatory */
fin = '-';
}
else
/* The positive sign is optional, but we output it for
consistency */
fin = '+';
if (nb > 8)
/* We have room, so output 'Infinity' */
memcpy(p + nb - 8, "Infinity", 8);
else
/* For the case of width equals 8, there is not enough room
for the sign and 'Infinity' so we go with 'Inf' */
memcpy(p + nb - 3, "Inf", 3);
if (nb < 9 && nb > 3)
p[nb - 4] = fin; /* Put the sign in front of Inf */
else if (nb > 8)
p[nb - 9] = fin; /* Put the sign in front of Infinity */
}
else
memcpy(p + nb - 3, "NaN", 3);
return;
}
}
if (f->format != FMT_G)
output_float (dtp, f, n);
else
{
save_scale_factor = dtp->u.p.scale_factor;
f2 = calculate_G_format (dtp, f, n, &nb);
output_float (dtp, f2, n);
dtp->u.p.scale_factor = save_scale_factor;
if (f2 != NULL)
free_mem(f2);
if (nb > 0)
{
p = write_block (dtp, nb);
if (p == NULL)
return;
memset (p, ' ', nb);
}
}
}
