104 lines
3.1 KiB
C
104 lines
3.1 KiB
C
/**
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* Copyright (c) 2009, Sun Microsystems Inc.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of Sun Microsystems Inc. nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
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* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
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* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
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* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
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* EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <lua.h>
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#include <lauxlib.h>
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#include <lualib.h>
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#include <string.h>
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#include <stdlib.h>
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#include "sigar.h"
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#include "lua-sigar.h"
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typedef struct {
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sigar_who_list_t who;
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sigar_t *sigar;
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} lua_sigar_who_t;
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static int lua_sigar_who_gc(lua_State *L) {
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lua_sigar_who_t *who = (lua_sigar_who_t *)luaL_checkudata(L, 1, "sigar_who");
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sigar_who_list_destroy(who->sigar, &(who->who));
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return 0;
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}
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static int lua_sigar_who_len(lua_State *L) {
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lua_sigar_who_t *who = (lua_sigar_who_t *)luaL_checkudata(L, 1, "sigar_who");
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lua_pushinteger(L, who->who.number);
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return 1;
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}
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static int lua_sigar_who_get_who(lua_State *L) {
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lua_sigar_who_t *who = (lua_sigar_who_t *)luaL_checkudata(L, 1, "sigar_who");
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int ndx = luaL_checkint(L, 2);
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if (ndx - 1 < 0 ||
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ndx - 1 >= who->who.number) {
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luaL_error(L, ".who[%d] out of range: 1..%d", ndx, who->who.number);
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}
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lua_newtable(L);
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#define DATA \
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(&(who->who.data[ndx - 1]))
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LUA_EXPORT_STR(DATA, user);
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LUA_EXPORT_STR(DATA, device);
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LUA_EXPORT_STR(DATA, host);
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LUA_EXPORT_INT(DATA, time);
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#undef DATA
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return 1;
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}
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int lua_sigar_who_get(lua_State *L) {
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sigar_t *s = *(sigar_t **)luaL_checkudata(L, 1, "sigar");
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lua_sigar_who_t *who;
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who = lua_newuserdata(L, sizeof(lua_sigar_who_t));
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who->sigar = s;
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sigar_who_list_get(s, &(who->who));
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if (0 != luaL_newmetatable(L, "sigar_who")) {
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lua_pushcfunction(L, lua_sigar_who_len);
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lua_setfield(L, -2, "__len");
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lua_pushcfunction(L, lua_sigar_who_get_who);
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lua_setfield(L, -2, "__index");
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lua_pushcfunction(L, lua_sigar_who_gc);
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lua_setfield(L, -2, "__gc");
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}
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lua_setmetatable(L, -2);
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return 1;
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}
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