/**
* rig_protobuf_c_data_buffer_str_index_of:
* @buffer: buffer to scan.
* @str_to_find: a string to look for.
*
* Scans for the first instance of the given string.
* returns: its index in the buffer, or -1 if the string
* is not in the buffer.
*/
int
rig_protobuf_c_data_buffer_str_index_of (ProtobufCDataBuffer *buffer,
const char *str_to_find)
{
ProtobufCDataBufferFragment *frag = buffer->first_frag;
size_t rv = 0;
for (frag = buffer->first_frag; frag; frag = frag->next)
{
const uint8_t *frag_at = PROTOBUF_C_FRAGMENT_DATA (frag);
size_t frag_rem = frag->buf_length;
while (frag_rem > 0)
{
ProtobufCDataBufferFragment *subfrag;
const uint8_t *subfrag_at;
size_t subfrag_rem;
const char *str_at;
if (*frag_at != str_to_find[0])
{
frag_at++;
frag_rem--;
rv++;
continue;
}
subfrag = frag;
subfrag_at = frag_at + 1;
subfrag_rem = frag_rem - 1;
str_at = str_to_find + 1;
if (*str_at == '\0')
return rv;
while (subfrag != NULL)
{
while (subfrag_rem == 0)
{
subfrag = subfrag->next;
if (subfrag == NULL)
goto bad_guess;
subfrag_at = rig_protobuf_c_data_buffer_fragment_start (subfrag);
subfrag_rem = subfrag->buf_length;
}
while (*str_at != '\0' && subfrag_rem != 0)
{
if (*str_at++ != *subfrag_at++)
goto bad_guess;
subfrag_rem--;
}
if (*str_at == '\0')
return rv;
}
bad_guess:
frag_at++;
frag_rem--;
rv++;
}
}
return -1;
}
static inline uint8_t *
rig_protobuf_c_data_buffer_fragment_end (ProtobufCDataBufferFragment *frag)
{
return PROTOBUF_C_FRAGMENT_DATA(frag) + frag->buf_start + frag->buf_length;
}
static inline uint8_t *
protobuf_c_data_buffer_fragment_start (ProtobufCDataBufferFragment *frag)
{
return PROTOBUF_C_FRAGMENT_DATA(frag) + frag->buf_start;
}
