commit 0a73720: [Minor] Lua_text: Add __lt metamethod

[Vsevolod Stakhov]

Author: Vsevolod Stakhov
Date: 2020-08-15 14:49:54 +0100
URL: https://github.com/rspamd/rspamd/commit/0a737203c90e0fd5f8c022982ce42960bcb5b5b9

[Minor] Lua_text: Add __lt metamethod

---
 src/lua/lua_text.c | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/src/lua/lua_text.c b/src/lua/lua_text.c
index 663e4d49b..e3164aee1 100644
--- a/src/lua/lua_text.c
+++ b/src/lua/lua_text.c
@@ -201,6 +201,7 @@ LUA_FUNCTION_DEF (text, base64);
 LUA_FUNCTION_DEF (text, hex);
 LUA_FUNCTION_DEF (text, gc);
 LUA_FUNCTION_DEF (text, eq);
+LUA_FUNCTION_DEF (text, lt);
 
 static const struct luaL_reg textlib_f[] = {
 		LUA_INTERFACE_DEF (text, fromstring),
@@ -236,6 +237,7 @@ static const struct luaL_reg textlib_m[] = {
 		{"__tostring", lua_text_str},
 		{"__gc", lua_text_gc},
 		{"__eq", lua_text_eq},
+		{"__lt", lua_text_lt},
 		{NULL, NULL}
 };
 
@@ -1120,6 +1122,25 @@ lua_text_eq (lua_State *L)
 	return 1;
 }
 
+static gint
+lua_text_lt (lua_State *L)
+{
+	LUA_TRACE_POINT;
+	struct rspamd_lua_text *t1 = lua_check_text (L, 1),
+			*t2 = lua_check_text (L, 2);
+
+	if (t1 && t2) {
+		if (t1->len == t2->len) {
+			lua_pushboolean (L, memcmp (t1->start, t2->start, t1->len) < 0);
+		}
+		else {
+			lua_pushboolean (L, t1->len < t2->len);
+		}
+	}
+
+	return 1;
+}
+
 static gint
 lua_text_wipe (lua_State *L)
 {