ib_status_t ib_string_to_float_ex(
const char *s,
size_t slen,
ib_float_t *result
)
{
assert(result != NULL);
ib_status_t rc;
/* Check for zero length string */
if ( (s == NULL) || (*s == '\0') ) {
return IB_EINVAL;
}
char *sdup = strndup(s, slen);
if ( ! sdup ) {
return IB_EALLOC;
}
/* In this case the _ex function calls out to the no-length function. */
rc = ib_string_to_float(sdup, result);
free(sdup);
return rc;
}
/**
* Attempt to convert a single field.
*
* If the desired type matches the in_field type, out_field is set to NULL
* and IB_OK is returned.
*
* @param[in,out] mp Memory pool to use.
* @param[in] desired_type The type to try to convert this to.
* @param[in] in_field The input field.
* @param[out] out_field The output field to write to.
*
* @returns
* - IB_OK On success.
* - IB_EINVAL If a string cannot be converted to a number type
* or some other invalid type conversion is requested.
* - IB_EALLOC Memory allocation error.
*/
ib_status_t ib_field_convert(
ib_mpool_t *mp,
const ib_ftype_t desired_type,
const ib_field_t *in_field,
ib_field_t **out_field)
{
assert(mp);
assert(in_field);
ib_status_t rc;
/* Holder values for in_field values before being set in out_field. */
size_t sz;
const char *str;
const ib_bytestr_t *bstr;
ib_num_t num;
ib_float_t flt;
void *new_field_value;
if (in_field->type == desired_type) {
*out_field = NULL;
return IB_OK;
}
switch (in_field->type) {
case IB_FTYPE_NULSTR:
/* Extract string. */
rc = ib_field_value(in_field, ib_ftype_nulstr_out(&str));
if (rc!=IB_OK){
return rc;
}
switch(desired_type) {
case IB_FTYPE_BYTESTR:
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc!=IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_NUM:
rc = ib_string_to_num(str, 0, &num);
new_field_value = ib_ftype_num_in(&num);
break;
case IB_FTYPE_FLOAT:
rc = ib_string_to_float(str, &flt);
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_BYTESTR:
/* Extract bytestr. */
rc = ib_field_value(in_field, ib_ftype_bytestr_out(&bstr));
if (rc!=IB_OK){
return rc;
}
sz = ib_bytestr_length(bstr);
/* Convert byte str. */
switch(desired_type) {
case IB_FTYPE_NULSTR:
str = ib_mpool_memdup_to_str(mp, bstr, sz);
if (!str) {
return rc;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_NUM:
rc = ib_string_to_num_ex((char *)bstr, sz, 0, &num);
new_field_value = ib_ftype_num_in(&num);
break;
case IB_FTYPE_FLOAT:
rc = ib_string_to_float_ex((char *)bstr, sz, &flt);
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_NUM:
/* Extract unum. */
rc = ib_field_value(in_field, ib_ftype_num_out(&num));
if (rc!=IB_OK){
return rc;
}
switch(desired_type) {
case IB_FTYPE_NULSTR:
str = ib_num_to_string(mp, num);
if (!str) {
return IB_EINVAL;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_BYTESTR:
str = ib_num_to_string(mp, num);
if (!str) {
return IB_EINVAL;
}
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc!=IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_FLOAT:
flt = (ib_float_t)num;
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_FLOAT:
/* Extract unum. */
rc = ib_field_value(in_field, ib_ftype_float_out(&flt));
if (rc!=IB_OK){
return rc;
}
switch(desired_type) {
case IB_FTYPE_NULSTR:
str = ib_float_to_string(mp, flt);
if (!str) {
return IB_EINVAL;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_BYTESTR:
str = ib_float_to_string(mp, flt);
if (!str) {
return IB_EINVAL;
}
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc!=IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_NUM:
num = (ib_float_t)flt;
new_field_value = ib_ftype_num_in(&num);
break;
default:
return IB_EINVAL;
}
break;
default:
return IB_EINVAL;
}
rc = ib_field_create(
out_field,
mp,
in_field->name,
in_field->nlen,
desired_type,
new_field_value);
return rc;
}
static ib_status_t field_from_string_internal(
ib_mpool_t *mp,
const char *name,
size_t nlen,
const char *vstr,
size_t vlen,
bool vstr_is_nulstr,
ib_field_t **pfield)
{
assert(mp != NULL);
assert(name != NULL);
assert(vstr != NULL);
assert(pfield != NULL);
ib_status_t conv;
ib_status_t rc = IB_OK;
ib_field_t *field;
*pfield = NULL;
/* Try to convert to an integer */
if (*pfield == NULL) {
ib_num_t num_val;
if (vstr_is_nulstr) {
conv = ib_string_to_num(vstr, 0, &num_val);
}
else {
conv = ib_string_to_num_ex(vstr, vlen, 0, &num_val);
}
if (conv == IB_OK) {
rc = ib_field_create(&field, mp,
name, nlen,
IB_FTYPE_NUM,
ib_ftype_num_in(&num_val));
*pfield = field;
}
}
/* Try to convert to a float */
if (*pfield == NULL) {
ib_float_t float_val;
if (vstr_is_nulstr) {
conv = ib_string_to_float(vstr, &float_val);
}
else {
conv = ib_string_to_float_ex(vstr, vlen, &float_val);
}
if (conv == IB_OK) {
rc = ib_field_create(&field, mp,
name, nlen,
IB_FTYPE_FLOAT,
ib_ftype_float_in(&float_val));
*pfield = field;
}
}
/* Finally, assume that it's a string */
if (*pfield == NULL) {
if (vstr_is_nulstr) {
rc = ib_field_create(&field, mp,
name, nlen,
IB_FTYPE_NULSTR,
ib_ftype_nulstr_in(vstr));
}
else {
ib_bytestr_t *bs;
rc = ib_bytestr_dup_mem(&bs, mp, (const uint8_t *)vstr, vlen);
if (rc != IB_OK) {
return rc;
}
rc = ib_field_create(&field, mp,
name, nlen,
IB_FTYPE_BYTESTR,
ib_ftype_bytestr_in(bs));
}
*pfield = field;
}
return rc;
}
ib_status_t ib_field_convert(
ib_mpool_t *mp,
const ib_ftype_t desired_type,
const ib_field_t *in_field,
ib_field_t **out_field
)
{
assert(mp);
assert(in_field);
ib_status_t rc;
/* Holder values for in_field values before being set in out_field. */
size_t sz;
const char *str;
const ib_bytestr_t *bstr;
ib_num_t num;
ib_time_t tme;
ib_float_t flt;
void *new_field_value;
if (in_field->type == desired_type) {
*out_field = NULL;
return IB_OK;
}
switch (in_field->type) {
case IB_FTYPE_NULSTR:
/* Extract string. Note that a zero-length nulstr field can
* have a NULL value in the union. */
if ( (in_field->val->u.nulstr == NULL) &&
(in_field->val->pval == NULL) )
{
str = "";
}
else {
rc = ib_field_value(in_field, ib_ftype_nulstr_out(&str));
if (rc != IB_OK){
return rc;
}
}
switch (desired_type) {
case IB_FTYPE_BYTESTR:
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_TIME:
rc = ib_string_to_time(str, &tme);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_time_in(&tme);
break;
case IB_FTYPE_NUM:
rc = ib_string_to_num(str, 0, &num);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_num_in(&num);
break;
case IB_FTYPE_FLOAT:
rc = ib_string_to_float(str, &flt);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_BYTESTR:
/* Extract bytestr. */
rc = ib_field_value(in_field, ib_ftype_bytestr_out(&bstr));
if (rc != IB_OK){
return rc;
}
str = (const char *)ib_bytestr_const_ptr(bstr);
sz = ib_bytestr_length(bstr);
/* Convert byte str. */
switch(desired_type) {
case IB_FTYPE_NULSTR:
str = ib_mpool_memdup_to_str(mp, str, sz);
if (!str) {
return rc;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_TIME:
rc = ib_string_to_time_ex(str, sz, &tme);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_time_in(&tme);
break;
case IB_FTYPE_NUM:
rc = ib_string_to_num_ex(str, sz, 0, &num);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_num_in(&num);
break;
case IB_FTYPE_FLOAT:
rc = ib_string_to_float_ex(str, sz, &flt);
if (rc != IB_OK) {
return rc;
}
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_TIME:
/* Extract time. */
rc = ib_field_value(in_field, ib_ftype_time_out(&tme));
if (rc != IB_OK){
return rc;
}
switch (desired_type) {
case IB_FTYPE_NULSTR:
str = ib_time_to_string(mp, tme);
if (! str) {
return IB_EINVAL;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_BYTESTR:
str = ib_time_to_string(mp, tme);
if (! str) {
return IB_EINVAL;
}
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc != IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_FLOAT:
flt = (ib_float_t)tme;
/* Check that our assignment is within error=1, or fail. */
if (llabs(tme - flt) > 1) {
return IB_EINVAL;
}
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_NUM:
/* Extract unum. */
rc = ib_field_value(in_field, ib_ftype_num_out(&num));
if (rc != IB_OK){
return rc;
}
switch (desired_type) {
case IB_FTYPE_NULSTR:
str = ib_num_to_string(mp, num);
if (! str) {
return IB_EINVAL;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_BYTESTR:
str = ib_num_to_string(mp, num);
if (! str) {
return IB_EINVAL;
}
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc != IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_TIME:
if (num < 0) {
return IB_EINVAL;
}
tme = (ib_time_t)num;
new_field_value = ib_ftype_time_in(&tme);
break;
case IB_FTYPE_FLOAT:
flt = (ib_float_t)num;
if (llabs(flt - num) > 1) {
return IB_EINVAL;
}
new_field_value = ib_ftype_float_in(&flt);
break;
default:
return IB_EINVAL;
}
break;
case IB_FTYPE_FLOAT:
/* Extract unum. */
rc = ib_field_value(in_field, ib_ftype_float_out(&flt));
if (rc != IB_OK){
return rc;
}
switch (desired_type) {
case IB_FTYPE_NULSTR:
str = ib_float_to_string(mp, flt);
if (!str) {
return IB_EINVAL;
}
new_field_value = ib_ftype_nulstr_in(str);
break;
case IB_FTYPE_BYTESTR:
str = ib_float_to_string(mp, flt);
if (!str) {
return IB_EINVAL;
}
rc = ib_bytestr_dup_nulstr((ib_bytestr_t **)&bstr, mp, str);
if (rc != IB_OK){
return rc;
}
new_field_value = ib_ftype_bytestr_in(bstr);
break;
case IB_FTYPE_TIME:
if (flt < 0) {
return IB_EINVAL;
}
tme = (ib_float_t)flt;
new_field_value = ib_ftype_time_in(&tme);
break;
case IB_FTYPE_NUM:
num = (ib_float_t)flt;
new_field_value = ib_ftype_num_in(&num);
break;
default:
return IB_EINVAL;
}
break;
default:
return IB_EINVAL;
}
rc = ib_field_create(
out_field,
mp,
in_field->name,
in_field->nlen,
desired_type,
new_field_value
);
return rc;
}