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/** \file
* \brief IupGetParam bindig to Lua 5.
*
* See Copyright Notice in "iup.h"
*/
#include <stdlib.h>
#include <string.h>
#include <lua.h>
#include <lauxlib.h>
#include "iup.h"
#include "iuplua.h"
#include "il.h"
#include "il_controls.h"
/* Used only by the Lua binding */
int iupGetParamCount(const char *format, int *param_extra);
char iupGetParamType(const char* format, int *line_size);
typedef struct _getparam_data
{
lua_State *L;
int has_func;
int func_ref;
}getparam_data;
static int param_action(Ihandle* dialog, int param_index, void* user_data)
{
int ret = 1;
getparam_data* gp = (getparam_data*)user_data;
if (gp->has_func)
{
lua_State *L = gp->L;
lua_getref(L, gp->func_ref);
iuplua_pushihandle(L, dialog);
lua_pushnumber(L, param_index);
if (iuplua_call_raw(L, 2, 1) != 0) /* 2 args, 1 return */
{
ret = (int)lua_tonumber(L,-1);
lua_pop(L, 1);
}
}
return ret;
}
static int GetParam(lua_State *L)
{
getparam_data gp;
const char* title = luaL_checkstring(L, 1);
void* user_data = (void*)&gp;
const char* format = luaL_checkstring(L, 3);
int param_count, param_extra, i, size, ret,
line_size = 0, lua_param_start = 4;
const char* f = format;
const char* s;
void* param_data[50];
char param_type[50];
gp.L = L;
gp.has_func = 0;
gp.func_ref = 0;
memset(param_data, 0, sizeof(void*)*50);
memset(param_type, 0, sizeof(char)*50);
param_count = iupGetParamCount(format, ¶m_extra);
for (i = 0; i < param_count; i++)
{
char t = iupGetParamType(f, &line_size);
if (t == 't') /* if separator */
{
f += line_size;
i--; /* compensate next increment */
continue;
}
switch(t)
{
case 'b':
case 'i':
case 'l':
param_data[i] = malloc(sizeof(int));
*(int*)(param_data[i]) = (int)luaL_checknumber(L, lua_param_start); lua_param_start++;
break;
case 'a':
case 'r':
param_data[i] = malloc(sizeof(float));
*(float*)(param_data[i]) = (float)luaL_checknumber(L, lua_param_start); lua_param_start++;
break;
case 'f':
case 'c':
case 's':
case 'm':
s = luaL_checkstring(L, lua_param_start); lua_param_start++;
size = strlen(s);
if (size < 512)
param_data[i] = malloc(512);
else
param_data[i] = malloc(2*size);
memcpy(param_data[i], s, size+1);
break;
}
param_type[i] = t;
f += line_size;
}
if (lua_isfunction(L, 2))
{
lua_pushvalue(L, 2);
gp.func_ref = lua_ref(L, 1);
gp.has_func = 1;
}
ret = IupGetParamv(title, param_action, user_data, format, param_count, param_extra, param_data);
lua_pushboolean(L, ret);
if (ret)
{
for (i = 0; i < param_count; i++)
{
switch(param_type[i])
{
case 'b':
case 'i':
case 'l':
lua_pushnumber(L, *(int*)(param_data[i]));
break;
case 'a':
case 'r':
lua_pushnumber(L, *(float*)(param_data[i]));
break;
case 'f':
case 'c':
case 's':
case 'm':
lua_pushstring(L, (char*)(param_data[i]));
break;
}
}
}
for (i = 0; i < param_count; i++)
{
free(param_data[i]);
}
if (gp.has_func)
lua_unref(L, gp.func_ref);
if (ret)
return param_count+1;
else
return 1;
}
static int GetParamParam(lua_State *L)
{
Ihandle *dialog = iuplua_checkihandle(L, 1);
int param_index = (int)luaL_checknumber(L, 2);
Ihandle* param;
char param_str[50];
sprintf(param_str, "PARAM%d", param_index);
param = (Ihandle*)IupGetAttribute(dialog, param_str);
iuplua_pushihandle(L, param);
return 1;
}
void iupgetparamlua_open(lua_State * L)
{
iuplua_register(L, GetParam, "GetParam");
iuplua_register(L, GetParamParam, "GetParamParam");
}
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