int libretrodb_create(RFILE *fd, libretrodb_value_provider value_provider,
void *ctx)
{
int rv;
libretrodb_metadata_t md;
struct rmsgpack_dom_value item;
uint64_t item_count = 0;
libretrodb_header_t header = {{0}};
ssize_t root = filestream_seek(fd, 0, SEEK_CUR);
memcpy(header.magic_number, MAGIC_NUMBER, sizeof(MAGIC_NUMBER)-1);
/* We write the header in the end because we need to know the size of
* the db first */
filestream_seek(fd, sizeof(libretrodb_header_t), SEEK_CUR);
item.type = RDT_NULL;
while ((rv = value_provider(ctx, &item)) == 0)
{
if ((rv = libretrodb_validate_document(&item)) < 0)
goto clean;
if ((rv = rmsgpack_dom_write(fd, &item)) < 0)
goto clean;
rmsgpack_dom_value_free(&item);
item.type = RDT_NULL;
item_count++;
}
if (rv < 0)
goto clean;
if ((rv = rmsgpack_dom_write(fd, &sentinal)) < 0)
goto clean;
header.metadata_offset = swap_if_little64(filestream_seek(fd, 0, SEEK_CUR));
md.count = item_count;
libretrodb_write_metadata(fd, &md);
filestream_seek(fd, root, SEEK_SET);
filestream_write(fd, &header, sizeof(header));
clean:
rmsgpack_dom_value_free(&item);
return rv;
}
int libretrodb_create(int fd, libretrodb_value_provider value_provider,
void * ctx)
{
int rv;
off_t root;
libretrodb_metadata_t md;
uint64_t item_count = 0;
struct rmsgpack_dom_value item = {};
libretrodb_header_t header = {};
memcpy(header.magic_number, MAGIC_NUMBER, sizeof(MAGIC_NUMBER)-1);
root = lseek(fd, 0, SEEK_CUR);
/* We write the header in the end because we need to know the size of
* the db first */
lseek(fd, sizeof(libretrodb_header_t), SEEK_CUR);
while ((rv = value_provider(ctx, &item)) == 0)
{
if ((rv = validate_document(&item)) < 0)
goto clean;
if ((rv = rmsgpack_dom_write(fd, &item)) < 0)
goto clean;
item_count++;
}
if (rv < 0)
goto clean;
if ((rv = rmsgpack_dom_write(fd, &sentinal)) < 0)
goto clean;
header.metadata_offset = httobe64(lseek(fd, 0, SEEK_CUR));
md.count = item_count;
libretrodb_write_metadata(fd, &md);
lseek(fd, root, SEEK_SET);
write(fd, &header, sizeof(header));
clean:
rmsgpack_dom_value_free(&item);
return rv;
}
