hb_blob_t *
hb_blob_create (const char *data,
unsigned int length,
hb_memory_mode_t mode,
hb_destroy_func_t destroy,
void *user_data)
{
hb_blob_t *blob;
if (!length || !HB_OBJECT_DO_CREATE (hb_blob_t, blob)) {
if (destroy)
destroy (user_data);
return &_hb_blob_nil;
}
hb_mutex_init (blob->lock);
blob->lock_count = 0;
blob->data = data;
blob->length = length;
blob->mode = mode;
blob->destroy = destroy;
blob->user_data = user_data;
if (blob->mode == HB_MEMORY_MODE_DUPLICATE) {
blob->mode = HB_MEMORY_MODE_READONLY;
if (!hb_blob_try_writable (blob)) {
hb_blob_destroy (blob);
return &_hb_blob_nil;
}
}
return blob;
}
hb_blob_t *
hb_blob_create_sub_blob (hb_blob_t *parent,
unsigned int offset,
unsigned int length)
{
hb_blob_t *blob;
const char *pdata;
if (!length || offset >= parent->length || !HB_OBJECT_DO_CREATE (hb_blob_t, blob))
return &_hb_blob_nil;
pdata = hb_blob_lock (parent);
blob->data = pdata + offset;
blob->length = MIN (length, parent->length - offset);
hb_mutex_lock (parent->lock);
blob->mode = parent->mode;
hb_mutex_unlock (parent->lock);
blob->destroy = (hb_destroy_func_t) _hb_blob_unlock_and_destroy;
blob->user_data = hb_blob_reference (parent);
return blob;
}
hb_unicode_funcs_t *
hb_unicode_funcs_copy (hb_unicode_funcs_t *other_ufuncs)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
ufuncs->v = other_ufuncs->v;
return ufuncs;
}
hb_unicode_funcs_t *
hb_unicode_funcs_create (void)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
ufuncs->v = _hb_unicode_funcs_nil.v;
return ufuncs;
}
hb_unicode_funcs_t *
hb_unicode_funcs_create (void)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
*ufuncs = _hb_unicode_funcs_nil;
HB_OBJECT_DO_INIT (ufuncs);
return ufuncs;
}
hb_unicode_funcs_t *
hb_unicode_funcs_copy (hb_unicode_funcs_t *other_ufuncs)
{
hb_unicode_funcs_t *ufuncs;
if (!HB_OBJECT_DO_CREATE (hb_unicode_funcs_t, ufuncs))
return &_hb_unicode_funcs_nil;
*ufuncs = *other_ufuncs;
HB_OBJECT_DO_INIT (ufuncs);
ufuncs->immutable = FALSE;
return ufuncs;
}