Sun, 23 Nov 2008 01:29:09 +0000
Initial import.
#include "dbd_mysql.h" int dbd_mysql_statement_create(lua_State *L, connection_t *conn, const char *sql_query); static int connection_new(lua_State *L) { int n = lua_gettop(L); connection_t *conn = NULL; const char *host = NULL; const char *user = NULL; const char *password = NULL; const char *db = NULL; int port = 0; const char *unix_socket = NULL; /* TODO always NULL */ int client_flag = 0; /* TODO always 0, set flags from options table */ /* db, user, password, host, port */ switch (n) { case 5: if (lua_isnil(L, 5) == 0) port = luaL_checkint(L, 5); case 4: if (lua_isnil(L, 4) == 0) host = luaL_checkstring(L, 4); case 3: if (lua_isnil(L, 3) == 0) password = luaL_checkstring(L, 3); case 2: if (lua_isnil(L, 2) == 0) user = luaL_checkstring(L, 2); case 1: if (lua_isnil(L, 1) == 0) db = luaL_checkstring(L, 1); } conn = (connection_t *)lua_newuserdata(L, sizeof(connection_t)); conn->mysql = mysql_init(NULL); if (mysql_real_connect(conn->mysql, host, user, password, db, port, unix_socket, client_flag)) { luaL_getmetatable(L, DBD_MYSQL_CONNECTION); lua_setmetatable(L, -2); } else { luaL_error(L, "Failed to connect to database: %s", mysql_error(conn->mysql)); lua_pushnil(L); } return 1; } static int connection_close(lua_State *L) { connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); int disconnect = 0; if (conn->mysql) { mysql_close(conn->mysql); disconnect = 1; } lua_pushboolean(L, disconnect); return 1; } static int connection_ping(lua_State *L) { connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); int err = 1; if (conn->mysql) { err = mysql_ping(conn->mysql); } lua_pushboolean(L, !err); return 1; } static int connection_prepare(lua_State *L) { connection_t *conn = (connection_t *)luaL_checkudata(L, 1, DBD_MYSQL_CONNECTION); if (conn->mysql) { return dbd_mysql_statement_create(L, conn, luaL_checkstring(L, 2)); } lua_pushnil(L); return 1; } static int connection_gc(lua_State *L) { /* always close the connection */ connection_close(L); return 0; } static const luaL_Reg connection_methods[] = { {"close", connection_close}, {"ping", connection_ping}, {"prepare", connection_prepare}, {NULL, NULL} }; static const luaL_Reg connection_class_methods[] = { {"New", connection_new}, {NULL, NULL} }; int dbd_mysql_connection(lua_State *L) { luaL_newmetatable(L, DBD_MYSQL_CONNECTION); luaL_register(L, 0, connection_methods); lua_pushvalue(L,-1); lua_setfield(L, -2, "__index"); lua_pushcfunction(L, connection_gc); lua_setfield(L, -2, "__gc"); luaL_register(L, DBD_MYSQL_CONNECTION, connection_class_methods); return 1; }