add "import -"

Closes: #21
Signed-off-by: William Casarin <[email protected]>

ndb.c

@@ -166,9 +166,13 @@ int main(int argc, char *argv[])
 
 		print_stats(&stat);
 	} else if (argc == 3 && !strcmp(argv[1], "import")) {
-		map_file(argv[2], &data, &data_len);
-		ndb_process_events(ndb, (const char *)data, data_len);
-		ndb_process_client_events(ndb, (const char *)data, data_len);
+		if (!strcmp(argv[2], "-")) {
+			ndb_process_events_stream(ndb, stdin);
+		} else {
+			map_file(argv[2], &data, &data_len);
+			ndb_process_events(ndb, (const char *)data, data_len);
+			ndb_process_client_events(ndb, (const char *)data, data_len);
+		}
 	} else if (argc == 2 && !strcmp(argv[1], "print-search-keys")) {
 		ndb_begin_query(ndb, &txn);
 		ndb_print_search_keys(&txn);

nostrdb.c

@@ -3236,6 +3236,24 @@ int _ndb_process_events(struct ndb *ndb, const char *ldjson, size_t json_len, in
 	return 1;
 }
 
+int ndb_process_events_stream(struct ndb *ndb, FILE* fp)
+{
+	char *line = NULL;
+	size_t len = 0;
+	ssize_t nread;
+
+	while ((nread = getline(&line, &len, stdin)) != -1) {
+		if (line == NULL)
+			break;
+		ndb_process_event(ndb, line, len);
+	}
+
+	if (line)
+		free(line);
+
+	return 1;
+}
+
 int ndb_process_client_events(struct ndb *ndb, const char *ldjson, size_t json_len)
 {
 	return _ndb_process_events(ndb, ldjson, json_len, 1);

nostrdb.h

@@ -340,6 +340,7 @@ int ndb_init(struct ndb **ndb, const char *dbdir, struct ndb_config *);
 int ndb_db_version(struct ndb *ndb);
 int ndb_process_event(struct ndb *, const char *json, int len);
 int ndb_process_events(struct ndb *, const char *ldjson, size_t len);
+int ndb_process_events_stream(struct ndb *, FILE* fp);
 int ndb_process_client_event(struct ndb *, const char *json, int len);
 int ndb_process_client_events(struct ndb *, const char *json, size_t len);
 int ndb_begin_query(struct ndb *, struct ndb_txn *);