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Implemented backu_step

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This commit is contained in:
Maas-Maarten Zeeman
2022-01-08 22:19:22 +01:00
parent e635710bda
commit d0cc3b10cc
4 changed files with 73 additions and 6 deletions
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61
c_src/esqlite3_nif.c
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@@ -262,6 +262,10 @@ static void
destruct_esqlite_backup(ErlNifEnv *env, void *arg)
{
esqlite_backup *backup = (esqlite_backup *) arg;
if(backup->backup) {
sqlite3_backup_finish(backup->backup);
}
backup->backup = NULL;
}
@@ -751,7 +755,6 @@ do_backup_init(ErlNifEnv *env, sqlite3 *db, const ERL_NIF_TERM arg)
if(!enif_get_tuple(env, arg, &tuple_arity, &elements)) {
return make_error_tuple(env, "no_tuple");
}
if(tuple_arity != 3) {
return make_error_tuple(env, "invalid_tuple");
}
@@ -791,9 +794,46 @@ do_backup_init(ErlNifEnv *env, sqlite3 *db, const ERL_NIF_TERM arg)
}
static ERL_NIF_TERM
do_backup_step(ErlNifEnv *env, const ERL_NIF_TERM arg)
do_backup_step(ErlNifEnv *env, sqlite3 *db, const ERL_NIF_TERM arg)
{
return make_atom(env, "todo");
int tuple_arity;
const ERL_NIF_TERM *elements;
esqlite_backup *esqlite_backup;
int n_page = 0;
int rc;
if(db == NULL) {
return make_error_tuple(env, "closed");
}
if(!enif_get_tuple(env, arg, &tuple_arity, &elements)) {
return make_error_tuple(env, "no_tuple");
}
if(tuple_arity != 2) {
return make_error_tuple(env, "invalid_tuple");
}
if(!enif_get_resource(env, elements[0], esqlite_backup_type, (void **) &esqlite_backup)) {
return make_error_tuple(env, "invalid");
}
if(!esqlite_backup->backup) {
return make_error_tuple(env, "backup");
}
if(!enif_get_int(env, elements[1], &n_page)) {
return make_error_tuple(env, "n_page");
}
rc = sqlite3_backup_step(esqlite_backup->backup, n_page);
if(rc == SQLITE_DONE) {
return make_atom(env, "done");
}
if(rc != SQLITE_OK) {
return make_sqlite3_error_tuple(env, rc, db);
}
return make_atom(env, "ok");
}
static ERL_NIF_TERM
@@ -833,7 +873,18 @@ do_backup_pagecount(ErlNifEnv *env, const ERL_NIF_TERM arg)
static ERL_NIF_TERM
do_backup_finish(ErlNifEnv *env, const ERL_NIF_TERM arg)
{
return make_atom(env, "todo");
esqlite_backup *esqlite_backup;
if(!enif_get_resource(env, arg, esqlite_backup_type, (void **) &esqlite_backup)) {
return make_error_tuple(env, "invalid");
}
if(esqlite_backup->backup) {
(void) sqlite3_backup_finish(esqlite_backup->backup);
esqlite_backup->backup = NULL;
}
return make_atom(env, "ok");
}
static ERL_NIF_TERM
@@ -884,7 +935,7 @@ evaluate_command(esqlite_command *cmd, esqlite_connection *conn)
case cmd_backup_init:
return do_backup_init(cmd->env, conn->db, cmd->arg);
case cmd_backup_step:
return do_backup_step(cmd->env, cmd->arg);
return do_backup_step(cmd->env, conn->db, cmd->arg);
case cmd_backup_remaining:
return do_backup_remaining(cmd->env, cmd->arg);
case cmd_backup_pagecount: