int lwm2m_stringToUri(char * buffer,
size_t len,
lwm2m_uri_t * uriP)
{
int head;
int readNum;
int buffer_len = len;
if (buffer == NULL || buffer_len == 0 || uriP == NULL) return 0;
// Skip any white space
head = 0;
while (head < buffer_len && isspace(buffer[head]))
{
head++;
}
if (head == buffer_len) return 0;
// Read object ID
readNum = prv_parse_number(buffer, buffer_len, &head);
if (readNum < 0 || readNum > LWM2M_MAX_ID) return 0;
uriP->objectId = (uint16_t)readNum;
if (head >= buffer_len) return head;
// Read object instance
if (buffer[head] == '/')
{
// default instance
head++;
}
else
{
readNum = prv_parse_number(buffer, buffer_len, &head);
if (readNum < 0 || readNum >= LWM2M_MAX_ID) return 0;
uriP->instanceId = (uint16_t)readNum;
uriP->flag |= LWM2M_URI_FLAG_INSTANCE_ID;
}
if (head >= buffer_len) return head;
// Read ressource ID
if (buffer[head] == '/')
{
// no ID
head++;
}
else
{
readNum = prv_parse_number(buffer, buffer_len, &head);
if (readNum < 0 || readNum >= LWM2M_MAX_ID) return 0;
uriP->resourceId = (uint16_t)readNum;
uriP->flag |= LWM2M_URI_FLAG_RESOURCE_ID;
}
return head;
}
int lwm2m_stringToUri(const char * buffer,
size_t buffer_len,
lwm2m_uri_t * uriP)
{
size_t head;
int readNum;
if (buffer == NULL || buffer_len == 0 || uriP == NULL) return 0;
memset(uriP, 0, sizeof(lwm2m_uri_t));
// Skip any white space
head = 0;
while (head < buffer_len && isspace(buffer[head]&0xFF))
{
head++;
}
if (head == buffer_len) return 0;
// Check the URI start with a '/'
if (buffer[head] != '/') return 0;
head++;
if (head == buffer_len) return 0;
// Read object ID
readNum = prv_parse_number((uint8_t *)buffer, buffer_len, &head);
if (readNum < 0 || readNum > LWM2M_MAX_ID) return 0;
uriP->objectId = (uint16_t)readNum;
uriP->flag |= LWM2M_URI_FLAG_OBJECT_ID;
if (buffer[head] == '/') head += 1;
if (head >= buffer_len) return head;
readNum = prv_parse_number((uint8_t *)buffer, buffer_len, &head);
if (readNum < 0 || readNum >= LWM2M_MAX_ID) return 0;
uriP->instanceId = (uint16_t)readNum;
uriP->flag |= LWM2M_URI_FLAG_INSTANCE_ID;
if (buffer[head] == '/') head += 1;
if (head >= buffer_len) return head;
readNum = prv_parse_number((uint8_t *)buffer, buffer_len, &head);
if (readNum < 0 || readNum >= LWM2M_MAX_ID) return 0;
uriP->resourceId = (uint16_t)readNum;
uriP->flag |= LWM2M_URI_FLAG_RESOURCE_ID;
if (head != buffer_len) return 0;
return head;
}
int prv_get_number(const char * uriString,
size_t uriLength)
{
int index = 0;
return prv_parse_number(uriString, uriLength, &index);
}
int prv_get_number(uint8_t * uriString,
size_t uriLength)
{
size_t index = 0;
return prv_parse_number(uriString, uriLength, &index);
}