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/*
* Copyright 2010-2016, Tarantool AUTHORS, please see AUTHORS file.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* 1. Redistributions of source code must retain the above
* copyright notice, this list of conditions and the
* following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above
* copyright notice, this list of conditions and the following
* disclaimer in the documentation and/or other materials
* provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY <COPYRIGHT HOLDER> ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
* <COPYRIGHT HOLDER> OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT,
* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
* BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF
* THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#include "say.h"
#include "cfg.h"
#include "lua/utils.h"
#include "tt_static.h"
enum { MAX_OPT_NAME_LEN = 256, MAX_OPT_VAL_LEN = 256 };
static void
cfg_get(const char *param)
{
const char *buf =
tt_snprintf(MAX_OPT_NAME_LEN, "return box.cfg.%s", param);
if (luaL_dostring(tarantool_L, buf) != 0)
panic("cfg_get('%s')", param);
}
int
cfg_geti(const char *param)
{
cfg_get(param);
int val;
if (lua_isboolean(tarantool_L, -1))
val = lua_toboolean(tarantool_L, -1);
else
val = lua_tointeger(tarantool_L, -1);
lua_pop(tarantool_L, 1);
return val;
}
int
cfg_getb(const char *param)
{
cfg_get(param);
int val;
if (lua_isnil(tarantool_L, -1))
return -1;
val = lua_toboolean(tarantool_L, -1);
lua_pop(tarantool_L, 1);
return val;
}
int
cfg_geti_default(const char *param, int default_val)
{
cfg_get(param);
int ok;
int val = lua_tointegerx(tarantool_L, -1, &ok);
return ok ? val : default_val;
}
int64_t
cfg_geti64(const char *param)
{
cfg_get(param);
int64_t val = luaL_toint64(tarantool_L, -1);
lua_pop(tarantool_L, 1);
return val;
}
/* Support simultaneous cfg_gets("str1") and cfg_gets("str2") */
static const char *
cfg_tostring(struct lua_State *L)
{
if (lua_isnil(L, -1))
return NULL;
return tt_snprintf(MAX_OPT_VAL_LEN, "%s", lua_tostring(L, -1));
}
const char *
cfg_gets(const char *param)
{
cfg_get(param);
const char *val = cfg_tostring(tarantool_L);
lua_pop(tarantool_L, 1);
return val;
}
double
cfg_getd(const char *param)
{
cfg_get(param);
double val = lua_tonumber(tarantool_L, -1);
lua_pop(tarantool_L, 1);
return val;
}
double
cfg_getd_default(const char *param, double default_val)
{
cfg_get(param);
int ok;
double val = lua_tonumberx(tarantool_L, -1, &ok);
return ok ? val : default_val;
}
int
cfg_getarr_size(const char *name)
{
cfg_get(name);
if (lua_isnil(tarantool_L, -1)) {
/* missing value is equal to empty array */
lua_pop(tarantool_L, 1);
return 0;
} else if (!lua_istable(tarantool_L, -1)) {
/* scalars are handled like an array with one element */
lua_pop(tarantool_L, 1);
return 1;
}
int result = lua_objlen(tarantool_L, -1);
lua_pop(tarantool_L, 1);
return result;
}
const char *
cfg_getarr_elem(const char *name, int i)
{
cfg_get(name);
if (!lua_istable(tarantool_L, -1)) {
/* scalars are handled like an array with one element */
assert(i == 0 && !lua_isnil(tarantool_L, -1));
const char *val = cfg_tostring(tarantool_L);
lua_pop(tarantool_L, 1);
return val;
}
lua_rawgeti(tarantool_L, -1, i + 1);
const char *val = cfg_tostring(tarantool_L);
lua_pop(tarantool_L, 2);
return val;
}
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