static const bson_t * _bson_reader_handle_read (bson_reader_handle_t *reader, /* IN */ bool *reached_eof) /* IN */ { int32_t blen; bson_return_val_if_fail (reader, NULL); if (reached_eof) { *reached_eof = false; } while (!reader->done) { if ((reader->end - reader->offset) < 4) { _bson_reader_handle_fill_buffer (reader); continue; } memcpy (&blen, &reader->data[reader->offset], sizeof blen); blen = BSON_UINT32_FROM_LE (blen); if (blen < 5) { return NULL; } if (blen > (int32_t)(reader->end - reader->offset)) { if (blen > (int32_t)reader->len) { _bson_reader_handle_grow_buffer (reader); } _bson_reader_handle_fill_buffer (reader); continue; } if (!bson_init_static (&reader->inline_bson, &reader->data[reader->offset], (uint32_t)blen)) { return NULL; } reader->offset += blen; return &reader->inline_bson; } if (reached_eof) { *reached_eof = reader->done && !reader->failed; } return NULL; }
bson_reader_t * bson_reader_new_from_handle (void *handle, bson_reader_read_func_t rf, bson_reader_destroy_func_t df) { bson_reader_handle_t *real; bson_return_val_if_fail (handle, NULL); bson_return_val_if_fail (rf, NULL); real = bson_malloc0 (sizeof *real); real->type = BSON_READER_HANDLE; real->data = bson_malloc0 (1024); real->handle = handle; real->len = 1024; real->offset = 0; bson_reader_set_read_func ((bson_reader_t *)real, rf); if (df) { bson_reader_set_destroy_func ((bson_reader_t *)real, df); } _bson_reader_handle_fill_buffer (real); return (bson_reader_t *)real; }