-- see zlib.h -- */
| 375 | |
| 376 | /* -- see zlib.h -- */ |
| 377 | z_size_t ZEXPORT gzfread(voidp buf, z_size_t size, z_size_t nitems, gzFile file) { |
| 378 | z_size_t len; |
| 379 | gz_statep state; |
| 380 | |
| 381 | /* get internal structure */ |
| 382 | if (file == NULL) |
| 383 | return 0; |
| 384 | state = (gz_statep)file; |
| 385 | |
| 386 | /* check that we're reading and that there's no (serious) error */ |
| 387 | if (state->mode != GZ_READ || |
| 388 | (state->err != Z_OK && state->err != Z_BUF_ERROR)) |
| 389 | return 0; |
| 390 | |
| 391 | /* compute bytes to read -- error on overflow */ |
| 392 | len = nitems * size; |
| 393 | if (size && len / size != nitems) { |
| 394 | gz_error(state, Z_STREAM_ERROR, "request does not fit in a size_t"); |
| 395 | return 0; |
| 396 | } |
| 397 | |
| 398 | /* read len or fewer bytes to buf, return the number of full items read */ |
| 399 | return len ? gz_read(state, buf, len) / size : 0; |
| 400 | } |
| 401 | |
| 402 | /* -- see zlib.h -- */ |
| 403 | #ifdef Z_PREFIX_SET |