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#include "stdafx.h"
#define MT_SCRIPT "SCRIPT"
CMLuaScript::CMLuaScript(lua_State *L, const wchar_t *path)
: CMLuaEnvironment(L),
isBinary(false),
status(ScriptStatus::None),
unloadRef(LUA_NOREF)
{
mir_wstrcpy(filePath, path);
const wchar_t *fileName = wcsrchr(filePath, L'\\') + 1;
const wchar_t *dot = wcsrchr(fileName, '.');
size_t length = mir_wstrlen(fileName) - mir_wstrlen(dot) + 1;
scriptName = (wchar_t*)mir_calloc(sizeof(wchar_t) * (length + 1));
mir_wstrncpy(scriptName, fileName, length);
m_szModuleName = mir_utf8encodeW(scriptName);
isBinary = mir_wstrcmpi(dot + 1, LUAPRECSCRIPTEXT) == 0;
}
CMLuaScript::CMLuaScript(const CMLuaScript &script)
: CMLuaEnvironment(script.L), isBinary(script.isBinary),
status(ScriptStatus::None), unloadRef(LUA_NOREF)
{
mir_wstrcpy(filePath, script.filePath);
scriptName = mir_wstrdup(script.scriptName);
m_szModuleName = mir_strdup(script.m_szModuleName);
}
CMLuaScript::~CMLuaScript()
{
//Unload();
mir_free((void*)m_szModuleName);
mir_free((void*)scriptName);
}
const wchar_t* CMLuaScript::GetFilePath() const
{
return filePath;
}
const wchar_t* CMLuaScript::GetName() const
{
return scriptName;
}
bool CMLuaScript::IsBinary() const
{
return isBinary;
}
bool CMLuaScript::IsEnabled() const
{
return g_plugin.getByte(_T2A(scriptName), 1);
}
void CMLuaScript::Enable()
{
g_plugin.delSetting(_T2A(scriptName));
}
void CMLuaScript::Disable()
{
g_plugin.setByte(_T2A(scriptName), 0);
}
ScriptStatus CMLuaScript::GetStatus() const
{
return status;
}
int CMLuaScript::Load()
{
status = ScriptStatus::Failed;
if (luaL_loadfile(L, _T2A(filePath))) {
ReportError(L);
return false;
}
CMLuaEnvironment::CreateEnvironmentTable();
if (lua_pcall(L, 0, 1, 0) != LUA_OK) {
ReportError(L);
return false;
}
status = ScriptStatus::Loaded;
if (lua_isnoneornil(L, -1))
return true;
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_getfield(L, -1, m_szModuleName);
if (!lua_toboolean(L, -1)) {
lua_pop(L, 1);
lua_pushvalue(L, -2);
lua_setfield(L, -2, m_szModuleName);
lua_pop(L, 1);
}
else
lua_remove(L, -2);
if (!lua_istable(L, -1))
return true;
lua_getfield(L, -1, "Load");
if (lua_isfunction(L, -1))
luaM_pcall(L);
else
lua_pop(L, 1);
lua_getfield(L, -1, "Unload");
if (lua_isfunction(L, -1)) {
lua_pushvalue(L, -1);
unloadRef = luaL_ref(L, LUA_REGISTRYINDEX);
}
lua_pop(L, 1);
lua_pop(L, 1);
return true;
}
int CMLuaScript::Unload()
{
if (status == ScriptStatus::Loaded) {
lua_rawgeti(L, LUA_REGISTRYINDEX, unloadRef);
if (lua_isfunction(L, -1))
luaM_pcall(L);
lua_pushnil(L);
lua_rawsetp(L, LUA_REGISTRYINDEX, this);
status = ScriptStatus::None;
}
luaL_getsubtable(L, LUA_REGISTRYINDEX, LUA_LOADED_TABLE);
lua_pushnil(L);
lua_setfield(L, -2, m_szModuleName);
lua_pop(L, 1);
return CMLuaEnvironment::Unload();
}
bool CMLuaScript::Reload()
{
Log(L"Reloading script %s", filePath);
Unload();
return Load();
}
static int luc_Writer(lua_State* /*L*/, const void *p, size_t sz, void *u)
{
return (fwrite(p, sz, 1, (FILE*)u) != 1) && (sz != 0);
}
bool CMLuaScript::Compile()
{
Unload();
Log(L"Compiling script %s", filePath);
wchar_t scriptDir[MAX_PATH];
FoldersGetCustomPathT(g_hScriptsFolder, scriptDir, _countof(scriptDir), VARSW(MIRLUA_PATHT));
wchar_t fullPath[MAX_PATH];
mir_snwprintf(fullPath, L"%s\\%s.%s", scriptDir, scriptName, LUAPRECSCRIPTEXT);
wchar_t path[MAX_PATH];
PathToRelativeW(fullPath, path);
FILE *file = _wfopen(path, L"wb");
if (file == nullptr) {
Log(L"Failed to save compiled script to %s", file);
return false;
}
if (luaL_loadfile(L, _T2A(filePath))) {
ReportError(L);
fclose(file);
return false;
}
int res = lua_dump(L, luc_Writer, file, 1);
if (res != 0) {
fclose(file);
return false;
}
fclose(file);
ptrW newPath(mir_wstrdup(filePath));
newPath[mir_wstrlen(newPath) - 1] = L'_';
MoveFile(filePath, newPath);
mir_wstrcpy(filePath, path);
return Load();
}
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