caleb-brown/redict
1
0
Fork 0
mirror of https://codeberg.org/redict/redict.git synced 2025-01-23 00:28:26 -05:00
Code Issues Actions Packages Projects Releases Wiki Activity

Scripting: add helper functions redis.error_reply() and redis.status_reply().

Browse Source 
A previous commit introduced Redis.NIL. This commit adds similar helper
functions to return tables with a single field set to the specified
string so that instead of using 'return {err="My Error"}' it is possible
to use a more idiomatic form:

    return redis.error_reply("My Error")
    return redis.status_reply("OK")
This commit is contained in:
antirez 2012-09-28 16:54:57 +02:00
parent 6dd1693c0e
commit 9c21b72bb9
1 changed files with 36 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/scripting.c
View File

@ -332,6 +332,34 @@ int luaRedisSha1hexCommand(lua_State *lua) {
return 1;
}
/* Returns a table with a single field 'field' set to the string value
* passed as argument. This helper function is handy when returning
* a Redis Protocol error or status reply from Lua:
*
* return redis.error_reply("ERR Some Error")
* return redis.status_reply("ERR Some Error")
*/
int luaRedisReturnSingleFieldTable(lua_State *lua, char *field) {
if (lua_gettop(lua) != 1 || lua_type(lua,-1) != LUA_TSTRING) {
luaPushError(lua, "wrong number or type of arguments");
return 1;
}
lua_newtable(lua);
lua_pushstring(lua, field);
lua_pushvalue(lua, -3);
lua_settable(lua, -3);
return 1;
}
int luaRedisErrorReplyCommand(lua_State *lua) {
return luaRedisReturnSingleFieldTable(lua,"err");
}
int luaRedisStatusReplyCommand(lua_State *lua) {
return luaRedisReturnSingleFieldTable(lua,"ok");
}
int luaLogCommand(lua_State *lua) {
int j, argc = lua_gettop(lua);
int level;
@ -524,6 +552,14 @@ void scriptingInit(void) {
lua_settable(lua, -3);
lua_settable(lua, -3);
/* redis.error_reply and redis.status_reply */
lua_pushstring(lua, "error_reply");
lua_pushcfunction(lua, luaRedisErrorReplyCommand);
lua_settable(lua, -3);
lua_pushstring(lua, "status_reply");
lua_pushcfunction(lua, luaRedisStatusReplyCommand);
lua_settable(lua, -3);
/* Finally set the table as 'redis' global var. */
lua_setglobal(lua,"redis");