static int db_gethook (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
char buff[5];
int mask = lua_gethookmask(L1);
lua_Hook hook = lua_gethook(L1);
if (hook == NULL) /* no hook? */
lua_pushnil(L);
else if (hook != hookf) /* external hook? */
lua_pushliteral(L, "external hook");
else { /* hook table must exist */
lua_rawgetp(L, LUA_REGISTRYINDEX, &HOOKKEY);
checkstack(L, L1, 1);
lua_pushthread(L1); lua_xmove(L1, L, 1);
lua_rawget(L, -2); /* 1st result = hooktable[L1] */
lua_remove(L, -2); /* remove hook table */
}
lua_pushstring(L, unmakemask(mask, buff)); /* 2nd result = mask */
lua_pushinteger(L, lua_gethookcount(L1)); /* 3rd result = count */
return 3;
}
static int db_sethook (lua_State *L) {
int arg;
lua_State *L1 = getthread(L, &arg);
if (lua_isnoneornil(L, arg+1)) {
lua_settop(L, arg+1);
lua_sethook(L1, NULL, 0, 0); /* turn off hooks */
}
else {
const char *smask = luaL_checkstring(L, arg+2);
int count = luaL_optint(L, arg+3, 0);
luaL_checktype(L, arg+1, LUA_TFUNCTION);
lua_sethook(L1, hookf, makemask(smask, count), count);
}
gethooktable(L1);
lua_pushlightuserdata(L1, L1);
lua_pushvalue(L, arg+1);
lua_xmove(L, L1, 1);
lua_rawset(L1, -3); /* set new hook */
lua_pop(L1, 1); /* remove hook table */
return 0;
}
static int db_sethook (lua_State *L) {
int arg, mask, count;
lua_Hook func;
lua_State *L1 = getthread(L, &arg);
if (lua_isnoneornil(L, arg+1)) {
lua_settop(L, arg+1);
func = NULL; mask = 0; count = 0; /* turn off hooks */
}
else {
const char *smask = luaL_checkstring(L, arg+2);
luaL_checktype(L, arg+1, LUA_TFUNCTION);
count = luaL_optint(L, arg+3, 0);
func = hookf; mask = makemask(smask, count);
}
gethooktable(L);
lua_pushvalue(L, arg+1);
lua_rawsetp(L, -2, L1); /* set new hook */
lua_pop(L, 1); /* remove hook table */
lua_sethook(L1, func, mask, count); /* set hooks */
return 0;
}
static int db_getlocal(lua_State *L)
{
int arg;
lua_State *L1 = getthread(L, &arg);
lua_Debug ar;
const char *name;
if (!lua_getstack(L1, luaL_checkint(L, arg + 1), &ar)) /* out of range? */
return luaL_argerror(L, arg + 1, "level out of range");
name = lua_getlocal(L1, &ar, luaL_checkint(L, arg + 2));
if (name)
{
lua_xmove(L1, L, 1);
lua_pushstring(L, name);
lua_pushvalue(L, -2);
return 2;
}
else
{
lua_pushnil(L);
return 1;
}
}
static int db_getinfo (lua_State *L) {
lua_Debug ar;
int arg;
//add by cuiwei 07.8.30
int i;
char aparms[1024] = {0};
//add end
lua_State *L1 = getthread(L, &arg);
const char *options = luaL_optstring(L, arg+2, "flnSu");
if (lua_isnumber(L, arg+1)) {
if (!lua_getstack(L1, (int)lua_tointeger(L, arg+1), &ar)) {
lua_pushnil(L); /* level out of range */
return 1;
}
}
else if (lua_isfunction(L, arg+1)) {
lua_pushfstring(L, ">%s", options);
options = lua_tostring(L, -1);
lua_pushvalue(L, arg+1);
lua_xmove(L, L1, 1);
}
else
return luaL_argerror(L, arg+1, "function or level expected");
if (!lua_getinfo(L1, options, &ar))
return luaL_argerror(L, arg+2, "invalid option");
lua_createtable(L, 0, 2);
if (strchr(options, 'S')) {
settabss(L, "source", ar.source);
settabss(L, "short_src", ar.short_src);
settabsi(L, "linedefined", ar.linedefined);
settabsi(L, "lastlinedefined", ar.lastlinedefined);
settabss(L, "what", ar.what);
}
if (strchr(options, 'l'))
settabsi(L, "currentline", ar.currentline);
if (strchr(options, 'u'))
{
settabsi(L, "nups", ar.nups);
//add by cuiwei 07.8.30
if (ar.what != "C" )
{
settabsi(L, "npars", ar.npars);
settabsi(L, "has3dot", ar.has3dot?1:0);
for ( i = 1; i <= ar.npars; i++ )
{
strcat(aparms, ar.parms[i-1]);
if ( i != ar.npars || ar.has3dot)
{
strcat(aparms, ",");
}
}
if ( ar.has3dot )
{
strcat(aparms, "...");
} settabss(L, "strparms", aparms);
}
//add end
}
if (strchr(options, 'n')) {
settabss(L, "name", ar.name);
settabss(L, "namewhat", ar.namewhat);
}
if (strchr(options, 'L'))
treatstackoption(L, L1, "activelines");
if (strchr(options, 'f'))
treatstackoption(L, L1, "func");
return 1; /* return table */
}
