X-Git-Url: https://git.tokkee.org/?a=blobdiff_plain;f=src%2Ffrontend%2Fgrammar.y;h=50bb00e7f632fa35abb283ca7025b0c02a80a908;hb=8f340af6edef3f5a7f6b5e13ff960ade8abc3f24;hp=004a5effa1537a29473066103757cd169867c37a;hpb=9ae83505d8025ab32a8bdf7904ff4df8f9e661bf;p=sysdb.git

diff --git a/src/frontend/grammar.y b/src/frontend/grammar.y
index 004a5ef..50bb00e 100644
--- a/src/frontend/grammar.y
+++ b/src/frontend/grammar.y
@@ -75,13 +75,16 @@ sdb_fe_yyerror(YYLTYPE *lval, sdb_fe_yyscan_t scanner, const char *msg);
 
 %token SCANNER_ERROR
 
-%token <str> IDENTIFIER
-%token <node> FETCH LIST
+%token WHERE
+
+%token <str> IDENTIFIER STRING
+%token <node> FETCH LIST LOOKUP
 
 %type <list> statements
 %type <node> statement
 	fetch_statement
 	list_statement
+	lookup_statement
 	expression
 
 %%
@@ -141,22 +144,36 @@ statement:
 	|
 	list_statement
 	|
+	lookup_statement
+	|
 	/* empty */
 		{
 			$$ = NULL;
 		}
 	;
 
+/*
+ * FETCH <hostname>;
+ *
+ * Retrieve detailed information about a single host.
+ */
 fetch_statement:
-	FETCH IDENTIFIER
+	FETCH STRING
 		{
 			$$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
 						conn_fetch_t, conn_fetch_destroy));
 			CONN_FETCH($$)->name = strdup($2);
 			$$->cmd = CONNECTION_FETCH;
+			free($2);
+			$2 = NULL;
 		}
 	;
 
+/*
+ * LIST;
+ *
+ * Returns a list of all hosts in the store.
+ */
 list_statement:
 	LIST
 		{
@@ -166,8 +183,34 @@ list_statement:
 		}
 	;
 
+/*
+ * LOOKUP <type> WHERE <expression>;
+ *
+ * Returns detailed information about <type> matching expression.
+ */
+lookup_statement:
+	LOOKUP IDENTIFIER WHERE expression
+		{
+			/* TODO: support other types as well */
+			if (strcasecmp($2, "hosts")) {
+				char errmsg[strlen($2) + 32];
+				snprintf(errmsg, sizeof(errmsg),
+						YY_("unknown table %s"), $2);
+				sdb_fe_yyerror(&yylloc, scanner, errmsg);
+				YYABORT;
+			}
+
+			$$ = SDB_CONN_NODE(sdb_object_create_dT(/* name = */ NULL,
+						conn_lookup_t, conn_lookup_destroy));
+			CONN_LOOKUP($$)->matcher = CONN_MATCHER($4);
+			$$->cmd = CONNECTION_LOOKUP;
+			free($2);
+			$2 = NULL;
+		}
+	;
+
 expression:
-	IDENTIFIER
+	STRING
 		{
 			$$ = SDB_CONN_NODE(sdb_object_create_T(/* name = */ NULL,
 						conn_node_matcher_t));