rt_private int run_idr_read (IDR *bu)
{
RT_GET_CONTEXT
register char * ptr = bu->i_buf;
int32 read_size;
long amount_left;
register int part_read;
register int total_read = 0;
if ((char_read_func ((char *)(&read_size), sizeof (int32))) < sizeof (int32))
eise_io("Independent retrieve: unable to read buffer size.");
read_size = ntohl (read_size);
#ifdef DEBUG
if (read_size > idrs_size (bu))
print_err_msg(stderr, "Too large %d info for %d buffer\n", read_size, idrs_size (bu));
#endif
amount_left = read_size;
while (total_read < read_size) {
if ((part_read = char_read_func (ptr, amount_left)) <= 0) {
/* If we read 0 bytes, it means that we reached the end of file,
* so we are missing something, instead of going further we stop */
eio();
}
total_read += part_read;
ptr += part_read;
amount_left -= part_read;
}
return total_read;
}
rt_private size_t parsing_retrieve_read_with_compression (void)
{
RT_GET_CONTEXT
void* dcmps_in_ptr = (char *)0;
void* dcmps_out_ptr = (char *)0;
lzo_uint dcmps_in_size = 0;
lzo_uint dcmps_out_size = (lzo_uint) cmp_buffer_size;
char* ptr = (char *)0;
int read_size = 0;
int part_read = 0;
int l_bytes_read;
REQUIRE("cmp_buffer_size not too big", cmp_buffer_size <= 0xFFFFFFFF);
ptr = cmps_general_buffer;
l_bytes_read = char_read_func ((char *) &read_size, sizeof(int));
if ((l_bytes_read < 0) || ((size_t) l_bytes_read < sizeof(int))) {
eio();
}
dcmps_in_size = read_size;
while (read_size > 0) {
part_read = char_read_func (ptr, read_size);
if (part_read <= 0)
/* If we read 0 bytes, it means that we reached the end of file,
* so we are missing something, instead of going further we stop */
eio();
read_size -= part_read;
ptr += part_read;
}
dcmps_in_ptr = cmps_general_buffer;
dcmps_out_ptr = general_buffer;
lzo1x_decompress (dcmps_in_ptr, dcmps_in_size,
dcmps_out_ptr, &dcmps_out_size, NULL);
CHECK("dcmps_out_size_positive", dcmps_out_size > 0);
return dcmps_out_size;
}
