271 lines
7.7 KiB
C++
271 lines
7.7 KiB
C++
/*
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* Copyright (C) EdgeTX
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*
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* Based on code named
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* opentx - https://github.com/opentx/opentx
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* th9x - http://code.google.com/p/th9x
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* er9x - http://code.google.com/p/er9x
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* gruvin9x - http://code.google.com/p/gruvin9x
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*
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* License GPLv2: http://www.gnu.org/licenses/gpl-2.0.html
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#include <ctype.h>
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#include <stdio.h>
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#include "edgetx.h"
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#include "lua_api.h"
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#include "widget.h"
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#include "lib_file.h"
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#include "view_main.h"
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#include "lua_widget.h"
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#include "lua_widget_factory.h"
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#include "lua_states.h"
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#define MAX_INSTRUCTIONS (20000/100)
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#define LUA_WARNING_INFO_LEN 64
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lua_State * lsWidgets = NULL;
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uint8_t instructionsPercent = 0;
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extern int custom_lua_atpanic(lua_State *L);
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#define LUA_WIDGET_FILENAME "/main.lua"
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#define LUA_FULLPATH_MAXLEN \
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(LEN_FILE_PATH_MAX + LEN_SCRIPT_FILENAME + \
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LEN_FILE_EXTENSION_MAX)
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static void luaHook(lua_State *L, lua_Debug *ar)
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{
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if (ar->event == LUA_HOOKCOUNT) {
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instructionsPercent++;
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#if defined(DEBUG)
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// Disable Lua script instructions limit in DEBUG mode,
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// just report max value reached
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static uint16_t max = 0;
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if (instructionsPercent > 100) {
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if (max + 10 < instructionsPercent) {
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max = instructionsPercent;
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TRACE("LUA instructionsPercent %u%%", (uint32_t)max);
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}
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} else if (instructionsPercent < 10) {
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max = 0;
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}
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#else
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if (instructionsPercent > 100) {
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// From now on, as soon as a line is executed, error
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// keep erroring until you're script reaches the top
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lua_sethook(L, luaHook, LUA_MASKLINE, 0);
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luaL_error(L, "CPU limit");
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}
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#endif
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}
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#if defined(LUA_ALLOCATOR_TRACER)
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else if (ar->event == LUA_HOOKLINE) {
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lua_getinfo(L, "nSl", ar);
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LuaMemTracer *tracer = GET_TRACER(L);
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if (tracer->alloc || tracer->free) {
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TRACE("LT: [+%u,-%u] %s:%d", tracer->alloc, tracer->free, tracer->script,
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tracer->lineno);
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}
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tracer->script = ar->source;
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tracer->lineno = ar->currentline;
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tracer->alloc = 0;
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tracer->free = 0;
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}
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#endif // #if defined(LUA_ALLOCATOR_TRACER)
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}
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void luaSetInstructionsLimit(lua_State * L, int count)
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{
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instructionsPercent = 0;
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#if defined(LUA_ALLOCATOR_TRACER)
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lua_sethook(L, luaHook, LUA_MASKCOUNT|LUA_MASKLINE, count);
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#else
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lua_sethook(L, luaHook, LUA_MASKCOUNT, count);
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#endif
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}
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void luaLoadWidgetCallback(const char* filename)
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{
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TRACE("luaLoadWidgetCallback()");
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const char * name=NULL;
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int optionDefinitionsReference = LUA_REFNIL, createFunction = 0, updateFunction = 0,
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refreshFunction = 0, backgroundFunction = 0, translateFunction = 0;
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bool lvglLayout = false;
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luaL_checktype(lsWidgets, -1, LUA_TTABLE);
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for (lua_pushnil(lsWidgets); lua_next(lsWidgets, -2); lua_pop(lsWidgets, 1)) {
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const char * key = lua_tostring(lsWidgets, -2);
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if (!strcmp(key, "name")) {
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name = luaL_checkstring(lsWidgets, -1);
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}
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else if (!strcmp(key, "options")) {
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optionDefinitionsReference = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcmp(key, "create")) {
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createFunction = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcmp(key, "update")) {
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updateFunction = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcmp(key, "refresh")) {
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refreshFunction = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcmp(key, "background")) {
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backgroundFunction = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcmp(key, "translate")) {
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translateFunction = luaL_ref(lsWidgets, LUA_REGISTRYINDEX);
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lua_pushnil(lsWidgets);
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}
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else if (!strcasecmp(key, "useLvgl")) {
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lvglLayout = lua_toboolean(lsWidgets, -1);
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}
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}
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if (name && createFunction) {
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ZoneOption * options = LuaWidgetFactory::parseOptionDefinitions(optionDefinitionsReference);
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if (options) {
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new LuaWidgetFactory(name, options, optionDefinitionsReference,
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createFunction, updateFunction, refreshFunction, backgroundFunction,
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translateFunction, lvglLayout, filename);
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TRACE("Loaded Lua widget %s", name);
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}
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}
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}
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static void luaLoadFile(const char * filename, std::function<void()> callback)
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{
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if (lsWidgets == NULL)
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return;
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TRACE("luaLoadFile(%s)", filename);
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luaSetInstructionsLimit(lsWidgets, MAX_INSTRUCTIONS);
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PROTECT_LUA() {
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if (luaLoadScriptFileToState(lsWidgets, filename, LUA_SCRIPT_LOAD_MODE) == SCRIPT_OK) {
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if (lua_pcall(lsWidgets, 0, 1, 0) == LUA_OK && lua_istable(lsWidgets, -1)) {
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callback();
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}
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else {
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TRACE("luaLoadFile(%s): Error parsing script: %s", filename, lua_tostring(lsWidgets, -1));
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}
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}
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}
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else {
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// error while loading Lua widget/theme,
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// do not disable whole Lua state, just ingnore bad widget/theme
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return;
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}
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UNPROTECT_LUA();
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}
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static void luaLoadFiles(const char * directory)
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{
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char path[LUA_FULLPATH_MAXLEN+1];
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FILINFO fno;
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DIR dir;
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strcpy(path, directory);
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TRACE("luaLoadFiles() %s", path);
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FRESULT res = f_opendir(&dir, path); /* Open the directory */
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if (res == FR_OK) {
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int pathlen = strlen(path);
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path[pathlen++] = '/';
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for (;;) {
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res = f_readdir(&dir, &fno); /* Read a directory item */
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if (res != FR_OK || fno.fname[0] == 0) break; /* Break on error or end of dir */
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uint8_t len = strlen(fno.fname);
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if (len > 0 && (unsigned int)(len + pathlen + sizeof(LUA_WIDGET_FILENAME)) <= sizeof(path) &&
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fno.fname[0]!='.' && (fno.fattrib & AM_DIR)) {
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strcpy(&path[pathlen], fno.fname);
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strcat(&path[pathlen], LUA_WIDGET_FILENAME);
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if (isFileAvailable(path)) {
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luaLoadFile(path, [=]() { luaLoadWidgetCallback(path); });
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}
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}
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}
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}
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else {
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TRACE("f_opendir(%s) failed, code=%d", path, res);
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}
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f_closedir(&dir);
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}
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#if defined(LUA_ALLOCATOR_TRACER)
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LuaMemTracer lsWidgetsTrace;
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#endif
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void luaInitThemesAndWidgets()
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{
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TRACE("luaInitThemesAndWidgets");
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#if defined(USE_CUSTOM_ALLOCATOR)
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lsWidgets = lua_newstate(custom_l_alloc, NULL); //we use our own allocator!
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#elif defined(LUA_ALLOCATOR_TRACER)
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memclear(&lsWidgetsTrace, sizeof(lsWidgetsTrace));
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lsWidgetsTrace.script = "lua_newstate(widgets)";
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lsWidgets = lua_newstate(tracer_alloc, &lsWidgetsTrace); //we use tracer allocator
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#else
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lsWidgets = luaL_newstate(); //we use Lua default allocator
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#endif
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if (lsWidgets) {
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// install our panic handler
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lua_atpanic(lsWidgets, &custom_lua_atpanic);
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#if defined(LUA_ALLOCATOR_TRACER)
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lua_sethook(lsWidgets, luaHook, LUA_MASKLINE, 0);
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#endif
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// protect libs and constants registration
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PROTECT_LUA() {
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luaRegisterLibraries(lsWidgets);
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}
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else {
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// if we got panic during registration
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// we disable Lua for this session
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// luaDisable();
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luaClose(&lsWidgets);
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lsWidgets = 0;
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}
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UNPROTECT_LUA();
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TRACE("lsWidgets %p", lsWidgets);
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luaLoadFiles(WIDGETS_PATH);
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luaDoGc(lsWidgets, true);
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}
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}
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void luaUnregisterWidgets()
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{
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std::list<const WidgetFactory *> regWidgets(WidgetFactory::getRegisteredWidgets());
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for (auto w : regWidgets) {
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if (w->isLuaWidgetFactory()) {
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delete w;
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}
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}
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}
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