prosody
6eb5d2bb11af
util-src/windows.c

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util-src/windows.c @ 10921:6eb5d2bb11af

util-src: Use the luaL_pushfail API added in Lua 5.4 to highlight all failure conditions Actually just an alias of pushnil, but it does make it more obvious where the failure conditions are, which is good for readability.
author Kim Alvefur <zash@zash.se>
date Sun, 07 Jun 2020 02:25:56 +0200
parent 7889:b8d694646597
child 12575:1f6f05a98fcd
comparison
equal deleted inserted replaced
10920:c171b4c59bd1 10921:6eb5d2bb11af
20 #include "lauxlib.h" 20 #include "lauxlib.h"
21 21
22 #if (LUA_VERSION_NUM == 501) 22 #if (LUA_VERSION_NUM == 501)
23 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R) 23 #define luaL_setfuncs(L, R, N) luaL_register(L, NULL, R)
24 #endif 24 #endif
25 #if (LUA_VERSION_NUM < 504)
26 #define luaL_pushfail lua_pushnil
27 #endif
25 28
26 static int Lget_nameservers(lua_State *L) { 29 static int Lget_nameservers(lua_State *L) {
27 char stack_buffer[1024]; // stack allocated buffer 30 char stack_buffer[1024]; // stack allocated buffer
28 IP4_ARRAY *ips = (IP4_ARRAY *) stack_buffer; 31 IP4_ARRAY *ips = (IP4_ARRAY *) stack_buffer;
29 DWORD len = sizeof(stack_buffer); 32 DWORD len = sizeof(stack_buffer);
43 lua_rawseti(L, -2, i + 1); 46 lua_rawseti(L, -2, i + 1);
44 } 47 }
45 48
46 return 1; 49 return 1;
47 } else { 50 } else {
48 lua_pushnil(L); 51 luaL_pushfail(L);
49 lua_pushfstring(L, "DnsQueryConfig returned %d", status); 52 lua_pushfstring(L, "DnsQueryConfig returned %d", status);
50 return 2; 53 return 2;
51 } 54 }
52 } 55 }
53 56
54 static int lerror(lua_State *L, char *string) { 57 static int lerror(lua_State *L, char *string) {
55 lua_pushnil(L); 58 luaL_pushfail(L);
56 lua_pushfstring(L, "%s: %d", string, GetLastError()); 59 lua_pushfstring(L, "%s: %d", string, GetLastError());
57 return 2; 60 return 2;
58 } 61 }
59 62
60 static int Lget_consolecolor(lua_State *L) { 63 static int Lget_consolecolor(lua_State *L) {