/*
Copyright (c) 1996 Eugene Roshal
Copyright (c) 2000 Far Group
All rights reserved.

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.
3. The name of the authors may not be used to endorse or promote products
   derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 THE AUTHOR 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 "headers.hpp"


#include "plugins.hpp"
#include "plugapi.hpp"
#include "lang.hpp"
#include "keys.hpp"
#include "scantree.hpp"
#include "chgprior.hpp"
#include "constitle.hpp"
#include "cmdline.hpp"
#include "filepanels.hpp"
#include "panel.hpp"
#include "vmenu.hpp"
#include "dialog.hpp"
#include "rdrwdsk.hpp"
#include "savescr.hpp"
#include "ctrlobj.hpp"
#include "scrbuf.hpp"
#include "udlist.hpp"
#include "fileedit.hpp"
#include "RefreshFrameManager.hpp"
#include "InterThreadCall.hpp"
#include "plclass.hpp"
#include "PluginW.hpp"
#include "keyboard.hpp"
#include "message.hpp"
#include "clipboard.hpp"
#include "xlat.hpp"
#include "pathmix.hpp"
#include "dirmix.hpp"
#include "strmix.hpp"
#include "processname.hpp"
#include "mix.hpp"
#include "interf.hpp"
#include "execute.hpp"
#include "flink.hpp"
#include <string>
#include <list>
#include <vector>
#include <KeyFileHelper.h>

static const char *szCache_Preload = "Preload";
static const char *szCache_Preopen = "Preopen";
static const char *szCache_SysID = "SysID";

static const char szCache_OpenPlugin[] = "OpenPluginW";
static const char szCache_OpenFilePlugin[] = "OpenFilePluginW";
static const char szCache_SetFindList[] = "SetFindListW";
static const char szCache_ProcessEditorInput[] = "ProcessEditorInputW";
static const char szCache_ProcessEditorEvent[] = "ProcessEditorEventW";
static const char szCache_ProcessViewerEvent[] = "ProcessViewerEventW";
static const char szCache_ProcessDialogEvent[] = "ProcessDialogEventW";
static const char szCache_ProcessSynchroEvent[] = "ProcessSynchroEventW";
#if defined(PROCPLUGINMACROFUNC)
static const char szCache_ProcessMacroFunc[] = "ProcessMacroFuncW";
#endif
static const char szCache_Configure[] = "ConfigureW";
static const char szCache_Analyse[] = "AnalyseW";
static const char szCache_GetCustomData[] = "GetCustomDataW";

static const char NFMP_OpenPlugin[] = "OpenPluginW";
static const char NFMP_OpenFilePlugin[] = "OpenFilePluginW";
static const char NFMP_SetFindList[] = "SetFindListW";
static const char NFMP_ProcessEditorInput[] = "ProcessEditorInputW";
static const char NFMP_ProcessEditorEvent[] = "ProcessEditorEventW";
static const char NFMP_ProcessViewerEvent[] = "ProcessViewerEventW";
static const char NFMP_ProcessDialogEvent[] = "ProcessDialogEventW";
static const char NFMP_ProcessSynchroEvent[] = "ProcessSynchroEventW";
#if defined(PROCPLUGINMACROFUNC)
static const char NFMP_ProcessMacroFunc[] = "ProcessMacroFuncW";
#endif
static const char NFMP_SetStartupInfo[] = "SetStartupInfoW";
static const char NFMP_ClosePlugin[] = "ClosePluginW";
static const char NFMP_GetPluginInfo[] = "GetPluginInfoW";
static const char NFMP_GetOpenPluginInfo[] = "GetOpenPluginInfoW";
static const char NFMP_GetFindData[] = "GetFindDataW";
static const char NFMP_FreeFindData[] = "FreeFindDataW";
static const char NFMP_GetVirtualFindData[] = "GetVirtualFindDataW";
static const char NFMP_FreeVirtualFindData[] = "FreeVirtualFindDataW";
static const char NFMP_SetDirectory[] = "SetDirectoryW";
static const char NFMP_GetFiles[] = "GetFilesW";
static const char NFMP_PutFiles[] = "PutFilesW";
static const char NFMP_DeleteFiles[] = "DeleteFilesW";
static const char NFMP_MakeDirectory[] = "MakeDirectoryW";
static const char NFMP_ProcessHostFile[] = "ProcessHostFileW";
static const char NFMP_Configure[] = "ConfigureW";
static const char NFMP_MayExitFAR[] = "MayExitFARW";
static const char NFMP_ExitFAR[] = "ExitFARW";
static const char NFMP_ProcessKey[] = "ProcessKeyW";
static const char NFMP_ProcessEvent[] = "ProcessEventW";
static const char NFMP_Compare[] = "CompareW";
static const char NFMP_GetMinFarVersion[] = "GetMinFarVersionW";
static const char NFMP_Analyse[] = "AnalyseW";
static const char NFMP_GetCustomData[] = "GetCustomDataW";
static const char NFMP_FreeCustomData[] = "FreeCustomDataW";


static void CheckScreenLock()
{
	if (ScrBuf.GetLockCount() > 0 && !CtrlObject->Macro.PeekKey())
	{
		ScrBuf.SetLockCount(0);
		ScrBuf.Flush();
	}
}

static size_t WINAPI FarKeyToName(int Key,wchar_t *KeyText,size_t Size)
{
	FARString strKT;

	if (!KeyToText(Key,strKT))
		return 0;

	size_t len = strKT.GetLength();

	if (Size && KeyText)
	{
		if (Size <= len) len = Size-1;

		wmemcpy(KeyText, strKT.CPtr(), len);
		KeyText[len] = 0;
	}
	else if (KeyText) *KeyText = 0;

	return (len+1);
}

int WINAPI KeyNameToKeyW(const wchar_t *Name)
{
	FARString strN(Name);
	return (int)KeyNameToKey(strN);
}

PluginW::PluginW(PluginManager *owner, const FARString &strModuleName,
					const std::string &settingsName, const std::string &moduleID)
	:
	Plugin(owner, strModuleName, settingsName, moduleID)
{
	ClearExports();
}

PluginW::~PluginW()
{
}

bool PluginW::LoadFromCache()
{
	KeyFileReadSection kfh(PluginsIni(), GetSettingsName());

	if (!kfh.SectionLoaded())
		return false;

	//PF_PRELOAD plugin, skip cache
	if (kfh.GetInt(szCache_Preload) != 0)
		return Load();

	//одинаковые ли бинарники?
	if (kfh.GetString("ID") != m_strModuleID)
		return false;

	SysID = kfh.GetUInt(szCache_SysID, 0);
	pOpenPluginW = (PLUGINOPENPLUGINW)(INT_PTR)kfh.GetUInt(szCache_OpenPlugin, 0);
	pOpenFilePluginW = (PLUGINOPENFILEPLUGINW)(INT_PTR)kfh.GetUInt(szCache_OpenFilePlugin, 0);
	pSetFindListW = (PLUGINSETFINDLISTW)(INT_PTR)kfh.GetUInt(szCache_SetFindList, 0);
	pProcessEditorInputW = (PLUGINPROCESSEDITORINPUTW)(INT_PTR)kfh.GetUInt(szCache_ProcessEditorInput, 0);
	pProcessEditorEventW = (PLUGINPROCESSEDITOREVENTW)(INT_PTR)kfh.GetUInt(szCache_ProcessEditorEvent, 0);
	pProcessViewerEventW = (PLUGINPROCESSVIEWEREVENTW)(INT_PTR)kfh.GetUInt(szCache_ProcessViewerEvent, 0);
	pProcessDialogEventW = (PLUGINPROCESSDIALOGEVENTW)(INT_PTR)kfh.GetUInt(szCache_ProcessDialogEvent, 0);
	pProcessSynchroEventW = (PLUGINPROCESSSYNCHROEVENTW)(INT_PTR)kfh.GetUInt(szCache_ProcessSynchroEvent, 0);
#if defined(PROCPLUGINMACROFUNC)
	pProcessMacroFuncW = (PLUGINPROCESSMACROFUNCW)(INT_PTR)kfh.GetUInt(szCache_ProcessMacroFunc, 0);
#endif
	pConfigureW = (PLUGINCONFIGUREW)(INT_PTR)kfh.GetUInt(szCache_Configure, 0);
	pAnalyseW = (PLUGINANALYSEW)(INT_PTR)kfh.GetUInt(szCache_Analyse, 0);
	pGetCustomDataW = (PLUGINGETCUSTOMDATAW)(INT_PTR)kfh.GetUInt(szCache_GetCustomData, 0);
	WorkFlags.Set(PIWF_CACHED); //too much "cached" flags

	if (kfh.GetInt(szCache_Preopen) != 0)
		OpenModule();

	return true;
}

bool PluginW::SaveToCache()
{
	if (!pGetPluginInfoW &&
        !pOpenPluginW &&
        !pOpenFilePluginW &&
        !pSetFindListW &&
        !pProcessEditorInputW &&
        !pProcessEditorEventW &&
        !pProcessViewerEventW &&
        !pProcessDialogEventW &&
        !pProcessSynchroEventW &&
#if defined(PROCPLUGINMACROFUNC)
        !pProcessMacroFuncW &&
#endif
        !pAnalyseW &&
        !pGetCustomDataW
	   )
	{
		return false;
	}

	KeyFileHelper kfh(PluginsIni());
	kfh.RemoveSection(GetSettingsName());

	struct stat st{};
	const std::string &module = m_strModuleName.GetMB();
	if (stat(module.c_str(), &st) == -1)
	{
		fprintf(stderr, "%s: stat('%s') error %u\n",
			__FUNCTION__, module.c_str(), errno);
		return false;
	}

	kfh.SetString(GetSettingsName(), "Module", module.c_str());

	PluginInfo Info{};
	GetPluginInfo(&Info);
	SysID = Info.SysID; //LAME!!!

	kfh.SetInt(GetSettingsName(), szCache_Preopen, ((Info.Flags & PF_PREOPEN) != 0));

	if ((Info.Flags & PF_PRELOAD) != 0)
	{
		kfh.SetInt(GetSettingsName(), szCache_Preload, 1);
		WorkFlags.Change(PIWF_PRELOADED, TRUE);
		return true;
	}
	WorkFlags.Change(PIWF_PRELOADED, FALSE);

	kfh.SetString(GetSettingsName(), "ID", m_strModuleID.c_str());

	for (int i = 0; i < Info.DiskMenuStringsNumber; i++)
	{
		kfh.SetString(GetSettingsName(),
			StrPrintf(FmtDiskMenuStringD, i).c_str(),
				Info.DiskMenuStrings[i]);
	}

	for (int i = 0; i < Info.PluginMenuStringsNumber; i++)
	{
		kfh.SetString(GetSettingsName(),
			StrPrintf(FmtPluginMenuStringD, i).c_str(),
				Info.PluginMenuStrings[i]);
	}

	for (int i = 0; i < Info.PluginConfigStringsNumber; i++)
	{
		kfh.SetString(GetSettingsName(),
			StrPrintf(FmtPluginConfigStringD, i).c_str(),
				Info.PluginConfigStrings[i]);
	}

	kfh.SetString(GetSettingsName(), "CommandPrefix", Info.CommandPrefix);
	kfh.SetUInt(GetSettingsName(), "Flags", Info.Flags);

	kfh.SetUInt(GetSettingsName(), szCache_SysID, SysID);
	kfh.SetUInt(GetSettingsName(), szCache_OpenPlugin, pOpenPluginW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_OpenFilePlugin, pOpenFilePluginW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_SetFindList, pSetFindListW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_ProcessEditorInput, pProcessEditorInputW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_ProcessEditorEvent, pProcessEditorEventW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_ProcessViewerEvent, pProcessViewerEventW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_ProcessDialogEvent, pProcessDialogEventW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_ProcessSynchroEvent, pProcessSynchroEventW!=nullptr);
#if defined(PROCPLUGINMACROFUNC)
	kfh.SetUInt(GetSettingsName(), szCache_ProcessMacroFunc, pProcessMacroFuncW!=nullptr);
#endif
	kfh.SetUInt(GetSettingsName(), szCache_Configure, pConfigureW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_Analyse, pAnalyseW!=nullptr);
	kfh.SetUInt(GetSettingsName(), szCache_GetCustomData, pGetCustomDataW!=nullptr);

	return true;
}

bool PluginW::Load()
{
	if (m_Loaded)
		return true;

	if (!OpenModule())
		return false;

	m_Loaded = true;

	WorkFlags.Clear(PIWF_CACHED);
	GetModuleFN(pSetStartupInfoW, NFMP_SetStartupInfo);
	GetModuleFN(pOpenPluginW, NFMP_OpenPlugin);
	GetModuleFN(pOpenFilePluginW, NFMP_OpenFilePlugin);
	GetModuleFN(pClosePluginW, NFMP_ClosePlugin);
	GetModuleFN(pGetPluginInfoW, NFMP_GetPluginInfo);
	GetModuleFN(pGetOpenPluginInfoW, NFMP_GetOpenPluginInfo);
	GetModuleFN(pGetFindDataW, NFMP_GetFindData);
	GetModuleFN(pFreeFindDataW, NFMP_FreeFindData);
	GetModuleFN(pGetVirtualFindDataW, NFMP_GetVirtualFindData);
	GetModuleFN(pFreeVirtualFindDataW, NFMP_FreeVirtualFindData);
	GetModuleFN(pSetDirectoryW, NFMP_SetDirectory);
	GetModuleFN(pGetFilesW, NFMP_GetFiles);
	GetModuleFN(pPutFilesW, NFMP_PutFiles);
	GetModuleFN(pDeleteFilesW, NFMP_DeleteFiles);
	GetModuleFN(pMakeDirectoryW, NFMP_MakeDirectory);
	GetModuleFN(pProcessHostFileW, NFMP_ProcessHostFile);
	GetModuleFN(pSetFindListW, NFMP_SetFindList);
	GetModuleFN(pConfigureW, NFMP_Configure);
	GetModuleFN(pExitFARW, NFMP_ExitFAR);
	GetModuleFN(pMayExitFARW, NFMP_MayExitFAR);
	GetModuleFN(pProcessKeyW, NFMP_ProcessKey);
	GetModuleFN(pProcessEventW, NFMP_ProcessEvent);
	GetModuleFN(pCompareW, NFMP_Compare);
	GetModuleFN(pProcessEditorInputW, NFMP_ProcessEditorInput);
	GetModuleFN(pProcessEditorEventW, NFMP_ProcessEditorEvent);
	GetModuleFN(pProcessViewerEventW, NFMP_ProcessViewerEvent);
	GetModuleFN(pProcessDialogEventW, NFMP_ProcessDialogEvent);
	GetModuleFN(pProcessSynchroEventW, NFMP_ProcessSynchroEvent);
#if defined(PROCPLUGINMACROFUNC)
	GetModuleFN(pProcessMacroFuncW, NFMP_ProcessMacroFunc);
#endif
	GetModuleFN(pMinFarVersionW,NFMP_GetMinFarVersion);
	GetModuleFN(pAnalyseW, NFMP_Analyse);
	GetModuleFN(pGetCustomDataW, NFMP_GetCustomData);
	GetModuleFN(pFreeCustomDataW, NFMP_FreeCustomData);

	bool bUnloaded = false;

	if (!CheckMinFarVersion(bUnloaded) || !SetStartupInfo(bUnloaded))
	{
		if (!bUnloaded)
			Unload();

		//чтоб не пытаться загрузить опять а то ошибка будет постоянно показываться.
		WorkFlags.Set(PIWF_DONTLOADAGAIN);

		return false;
	}

	FuncFlags.Set(PICFF_LOADED);
	SaveToCache();
	return true;
}

static int WINAPI farExecuteW(const wchar_t *CmdStr, unsigned int flags)
{
	return farExecuteA(Wide2MB(CmdStr).c_str(), flags);
}

static int WINAPI farExecuteLibraryW(const wchar_t *Library, const wchar_t *Symbol, const wchar_t *CmdStr, unsigned int flags)
{
	return farExecuteLibraryA(Wide2MB(Library).c_str(), Wide2MB(Symbol).c_str(), Wide2MB(CmdStr).c_str(), flags);
}

static void farDisplayNotificationW(const wchar_t *action, const wchar_t *object)
{
	DisplayNotification(action, object);
}

static int farDispatchInterThreadCallsW()
{
	return DispatchInterThreadCalls();
}

static void WINAPI farBackgroundTaskW(const wchar_t *Info, BOOL Started)
{
	if (Started)
		CtrlObject->Plugins.BackroundTaskStarted(Info);
	else
		CtrlObject->Plugins.BackroundTaskFinished(Info);
}

static size_t WINAPI farStrCellsCount(const wchar_t *Str, size_t CharsCount)
{
	return StrCellsCount(Str, CharsCount);
}

static size_t WINAPI farStrSizeOfCells(const wchar_t *Str, size_t CharsCount, size_t *CellsCount, BOOL RoundUp)
{
	return StrSizeOfCells(Str, CharsCount, *CellsCount, RoundUp != FALSE);
}

void CreatePluginStartupInfo(Plugin *pPlugin, PluginStartupInfo *PSI, FarStandardFunctions *FSF)
{
	static PluginStartupInfo StartupInfo{};
	static FarStandardFunctions StandardFunctions{};

	// заполняем структуру StandardFunctions один раз!!!
	if (!StandardFunctions.StructSize)
	{
		StandardFunctions.StructSize=sizeof(StandardFunctions);
		StandardFunctions.snprintf=swprintf;
		StandardFunctions.BoxSymbols=BoxSymbols;
		StandardFunctions.sscanf=swscanf;
		StandardFunctions.qsort=FarQsort;
		StandardFunctions.qsortex=FarQsortEx;
		StandardFunctions.atoi=FarAtoi;
		StandardFunctions.atoi64=FarAtoi64;
		StandardFunctions.itoa=FarItoa;
		StandardFunctions.itoa64=FarItoa64;
		StandardFunctions.bsearch=FarBsearch;
		StandardFunctions.LIsLower = farIsLower;
		StandardFunctions.LIsUpper = farIsUpper;
		StandardFunctions.LIsAlpha = farIsAlpha;
		StandardFunctions.LIsAlphanum = farIsAlphaNum;
		StandardFunctions.LUpper = farUpper;
		StandardFunctions.LUpperBuf = farUpperBuf;
		StandardFunctions.LLowerBuf = farLowerBuf;
		StandardFunctions.LLower = farLower;
		StandardFunctions.LStrupr = farStrUpper;
		StandardFunctions.LStrlwr = farStrLower;
		StandardFunctions.LStricmp = farStrCmpI;
		StandardFunctions.LStrnicmp = farStrCmpNI;
		StandardFunctions.Unquote=Unquote;
		StandardFunctions.LTrim=RemoveLeadingSpaces;
		StandardFunctions.RTrim=RemoveTrailingSpaces;
		StandardFunctions.Trim=RemoveExternalSpaces;
		StandardFunctions.TruncStr=TruncStr;
		StandardFunctions.TruncPathStr=TruncPathStr;
		StandardFunctions.QuoteSpaceOnly=QuoteSpaceOnly;
		StandardFunctions.PointToName=PointToName;
		StandardFunctions.GetPathRoot=farGetPathRoot;
		StandardFunctions.AddEndSlash=AddEndSlash;
		StandardFunctions.CopyToClipboard=CopyToClipboard;
		StandardFunctions.PasteFromClipboard=PasteFromClipboard;
		StandardFunctions.FarKeyToName=FarKeyToName;
		StandardFunctions.FarNameToKey=KeyNameToKeyW;
		StandardFunctions.FarInputRecordToKey=InputRecordToKey;
		StandardFunctions.XLat=Xlat;
		StandardFunctions.GetFileOwner=farGetFileOwner;
		StandardFunctions.GetNumberOfLinks=GetNumberOfLinks;
		StandardFunctions.FarRecursiveSearch=FarRecursiveSearch;
		StandardFunctions.MkTemp=FarMkTemp;
		StandardFunctions.DeleteBuffer=DeleteBuffer;
		StandardFunctions.ProcessName=ProcessName;
		StandardFunctions.MkLink=FarMkLink;
		StandardFunctions.ConvertPath=farConvertPath;
		StandardFunctions.GetReparsePointInfo=farGetReparsePointInfo;
		StandardFunctions.GetCurrentDirectory=farGetCurrentDirectory;
		StandardFunctions.Execute = farExecuteW;
		StandardFunctions.ExecuteLibrary = farExecuteLibraryW;
		StandardFunctions.DisplayNotification = farDisplayNotificationW;
		StandardFunctions.DispatchInterThreadCalls = farDispatchInterThreadCallsW;
		StandardFunctions.BackgroundTask = farBackgroundTaskW;
		StandardFunctions.StrCellsCount = farStrCellsCount;
		StandardFunctions.StrSizeOfCells = farStrSizeOfCells;
	}

	if (!StartupInfo.StructSize)
	{
		StartupInfo.StructSize=sizeof(StartupInfo);
		StartupInfo.Menu=FarMenuFn;
		StartupInfo.GetMsg=FarGetMsgFn;
		StartupInfo.Message=FarMessageFn;
		StartupInfo.Control=FarControl;
		StartupInfo.SaveScreen=FarSaveScreen;
		StartupInfo.RestoreScreen=FarRestoreScreen;
		StartupInfo.GetDirList=FarGetDirList;
		StartupInfo.GetPluginDirList=FarGetPluginDirList;
		StartupInfo.FreeDirList=FarFreeDirList;
		StartupInfo.FreePluginDirList=FarFreePluginDirList;
		StartupInfo.Viewer=FarViewer;
		StartupInfo.Editor=FarEditor;
		StartupInfo.CmpName=FarCmpName;
		StartupInfo.Text=FarText;
		StartupInfo.EditorControl=FarEditorControl;
		StartupInfo.ViewerControl=FarViewerControl;
		StartupInfo.ShowHelp=FarShowHelp;
		StartupInfo.AdvControl=FarAdvControl;
		StartupInfo.DialogInit=FarDialogInit;
		StartupInfo.DialogRun=FarDialogRun;
		StartupInfo.DialogFree=FarDialogFree;
		StartupInfo.SendDlgMessage=FarSendDlgMessage;
		StartupInfo.DefDlgProc=FarDefDlgProc;
		StartupInfo.InputBox=FarInputBox;
		StartupInfo.PluginsControl=farPluginsControl;
		StartupInfo.FileFilterControl=farFileFilterControl;
		StartupInfo.RegExpControl=farRegExpControl;
	}

	*PSI=StartupInfo;
	*FSF=StandardFunctions;
	PSI->FSF=FSF;
	PSI->RootKey=nullptr;
	PSI->ModuleNumber=(INT_PTR)pPlugin;

	if (pPlugin)
	{
		PSI->ModuleName = pPlugin->GetModuleName().CPtr();
	}
}


struct ExecuteStruct
{
	int id; //function id
	union
	{
		INT_PTR nResult;
		HANDLE hResult;
		BOOL bResult;
	};

	union
	{
		INT_PTR nDefaultResult;
		HANDLE hDefaultResult;
		BOOL bDefaultResult;
	};

	bool bUnloaded;
};


#define EXECUTE_FUNCTION(function, es) \
	{ \
		es.nResult = 0; \
		es.nDefaultResult = 0; \
		es.bUnloaded = false; \
		function; \
	}


#define EXECUTE_FUNCTION_EX(function, es) \
	{ \
		es.bUnloaded = false; \
		es.nResult = 0; \
			es.nResult = (INT_PTR)function; \
	}

bool PluginW::SetStartupInfo(bool &bUnloaded)
{
	if (pSetStartupInfoW)
	{
		PluginStartupInfo _info;
		FarStandardFunctions _fsf;
		CreatePluginStartupInfo(this, &_info, &_fsf);
		// скорректируем адреса и плагино-зависимые поля
		_info.RootKey = strRootKey.CPtr();
		ExecuteStruct es;
		es.id = EXCEPT_SETSTARTUPINFO;
		EXECUTE_FUNCTION(pSetStartupInfoW(&_info), es);

		if (es.bUnloaded)
		{
			bUnloaded = true;
			return false;
		}
	}

	return true;
}

static void ShowMessageAboutIllegalPluginVersion(const wchar_t* plg,int required)
{
	FARString strMsg1, strMsg2;
	FARString strPlgName;
	strMsg1.Format(Msg::PlgRequired,
	               (WORD)(HIWORD(required)),(WORD)(LOWORD(required)));
	strMsg2.Format(Msg::PlgRequired2,
	               (WORD)(HIWORD(FAR_VERSION)),(WORD)(LOWORD(FAR_VERSION)));
	Message(MSG_WARNING,1,Msg::Error,Msg::PlgBadVers,plg,strMsg1,strMsg2,Msg::Ok);
}


bool PluginW::CheckMinFarVersion(bool &bUnloaded)
{
	if (pMinFarVersionW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_MINFARVERSION;
		es.nDefaultResult = 0;
		EXECUTE_FUNCTION_EX(pMinFarVersionW(), es);

		if (es.bUnloaded)
		{
			bUnloaded = true;
			return false;
		}

		DWORD FVer = (DWORD)es.nResult;

		if (LOWORD(FVer) >  LOWORD(FAR_VERSION) ||
		        (LOWORD(FVer) == LOWORD(FAR_VERSION) &&
		         HIWORD(FVer) >  HIWORD(FAR_VERSION)))
		{
			ShowMessageAboutIllegalPluginVersion(m_strModuleName,FVer);
			return false;
		}
	}

	return true;
}

int PluginW::Unload(bool bExitFAR)
{
	int nResult = TRUE;

	if (bExitFAR)
		ExitFAR();

	if (!WorkFlags.Check(PIWF_CACHED))
		ClearExports();

	CloseModule();

	m_Loaded = false;
	FuncFlags.Clear(PICFF_LOADED); //??
	return nResult;
}

bool PluginW::IsPanelPlugin()
{
	return pSetFindListW ||
	       pGetFindDataW ||
	       pGetVirtualFindDataW ||
	       pSetDirectoryW ||
	       pGetFilesW ||
	       pPutFilesW ||
	       pDeleteFilesW ||
	       pMakeDirectoryW ||
	       pProcessHostFileW ||
	       pProcessKeyW ||
	       pProcessEventW ||
	       pCompareW ||
	       pGetOpenPluginInfoW ||
	       pFreeFindDataW ||
	       pFreeVirtualFindDataW ||
	       pClosePluginW;
}

int PluginW::Analyse(const AnalyseData *pData)
{
	if (Load() && pAnalyseW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_ANALYSE;
		es.bDefaultResult = FALSE;
		es.bResult = FALSE;
		EXECUTE_FUNCTION_EX(pAnalyseW(pData), es);
		return es.bResult;
	}

	return FALSE;
}

HANDLE PluginW::OpenPlugin(int OpenFrom, INT_PTR Item)
{
	ChangePriority *ChPriority = new ChangePriority(ChangePriority::NORMAL);

	CheckScreenLock(); //??

	{
//		FARString strCurDir;
//		CtrlObject->CmdLine->GetCurDir(strCurDir);
//		FarChDir(strCurDir);
		g_strDirToSet.Clear();
	}

	HANDLE hResult = INVALID_HANDLE_VALUE;

	if (Load() && pOpenPluginW)
	{
		//CurPluginItem=this; //BUGBUG
		ExecuteStruct es;
		es.id = EXCEPT_OPENPLUGIN;
		es.hDefaultResult = INVALID_HANDLE_VALUE;
		es.hResult = INVALID_HANDLE_VALUE;
		EXECUTE_FUNCTION_EX(pOpenPluginW(OpenFrom,Item), es);
		hResult = es.hResult;
		//CurPluginItem=nullptr; //BUGBUG
		/*    CtrlObject->Macro.SetRedrawEditor(TRUE); //BUGBUG

		    if ( !es.bUnloaded )
		    {

		      if(OpenFrom == OPEN_EDITOR &&
		         !CtrlObject->Macro.IsExecuting() &&
		         CtrlObject->Plugins.CurEditor &&
		         CtrlObject->Plugins.CurEditor->IsVisible() )
		      {
		        CtrlObject->Plugins.ProcessEditorEvent(EE_REDRAW,EEREDRAW_CHANGE);
		        CtrlObject->Plugins.ProcessEditorEvent(EE_REDRAW,EEREDRAW_ALL);
		        CtrlObject->Plugins.CurEditor->Show();
		      }
		      if (hInternal!=INVALID_HANDLE_VALUE)
		      {
		        PluginHandle *hPlugin=new PluginHandle;
		        hPlugin->InternalHandle=es.hResult;
		        hPlugin->PluginNumber=(INT_PTR)this;
		        return((HANDLE)hPlugin);
		      }
		      else
		        if ( !g_strDirToSet.IsEmpty() )
		        {
							CtrlObject->Cp()->ActivePanel->SetCurDir(g_strDirToSet,TRUE);
		          CtrlObject->Cp()->ActivePanel->Redraw();
		        }
		    } */
	}

	delete ChPriority;

	return hResult;
}

//////////////////////////////////

HANDLE PluginW::OpenFilePlugin(
    const wchar_t *Name,
    const unsigned char *Data,
    int DataSize,
    int OpMode
)
{
	HANDLE hResult = INVALID_HANDLE_VALUE;

	if (Load() && pOpenFilePluginW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_OPENFILEPLUGIN;
		es.hDefaultResult = INVALID_HANDLE_VALUE;
		EXECUTE_FUNCTION_EX(pOpenFilePluginW(Name, Data, DataSize, OpMode), es);
		hResult = es.hResult;
	}

	return hResult;
}


int PluginW::SetFindList(
    HANDLE hPlugin,
    const PluginPanelItem *PanelItem,
    int ItemsNumber
)
{
	BOOL bResult = FALSE;

	if (pSetFindListW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_SETFINDLIST;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pSetFindListW(hPlugin, PanelItem, ItemsNumber), es);
		bResult = es.bResult;
	}

	return bResult;
}

int PluginW::ProcessEditorInput(
    const INPUT_RECORD *D
)
{
	BOOL bResult = FALSE;

	if (Load() && pProcessEditorInputW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSEDITORINPUT;
		es.bDefaultResult = TRUE; //(TRUE) treat the result as a completed request on exception!
		EXECUTE_FUNCTION_EX(pProcessEditorInputW(D), es);
		bResult = es.bResult;
	}

	return bResult;
}

int PluginW::ProcessEditorEvent(
    int Event,
    PVOID Param
)
{
	if (Load() && pProcessEditorEventW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSEDITOREVENT;
		es.nDefaultResult = 0;
		EXECUTE_FUNCTION_EX(pProcessEditorEventW(Event, Param), es);
		(void)es; // supress 'set but not used' warning
	}

	return 0; //oops!
}

int PluginW::ProcessViewerEvent(
    int Event,
    void *Param
)
{
	if (Load() && pProcessViewerEventW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSVIEWEREVENT;
		es.nDefaultResult = 0;
		EXECUTE_FUNCTION_EX(pProcessViewerEventW(Event, Param), es);
		(void)es; // supress 'set but not used' warning
	}

	return 0; //oops, again!
}

int PluginW::ProcessDialogEvent(
    int Event,
    void *Param
)
{
	BOOL bResult = FALSE;

	if (Load() && pProcessDialogEventW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSDIALOGEVENT;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pProcessDialogEventW(Event, Param), es);
		bResult = es.bResult;
	}

	return bResult;
}

int PluginW::ProcessSynchroEvent(
    int Event,
    void *Param
)
{
	if (Load() && pProcessSynchroEventW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSSYNCHROEVENT;
		es.nDefaultResult = 0;
		EXECUTE_FUNCTION_EX(pProcessSynchroEventW(Event, Param), es);
		(void)es; // supress 'set but not used' warning
	}

	return 0; //oops, again!
}

#if defined(PROCPLUGINMACROFUNC)
int PluginW::ProcessMacroFunc(
    const wchar_t *Name,
    const FarMacroValue *Params,
    int nParams,
    FarMacroValue **Results,
    int *nResults
)
{
	int nResult = 0;

	if (Load() && pProcessMacroFuncW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSMACROFUNC;
		es.nDefaultResult = 0;
		EXECUTE_FUNCTION_EX(pProcessMacroFuncW(Name,Params,nParams,Results,nResults), es);
		nResult = (int)es.nResult;
	}

	return nResult;
}
#endif

int PluginW::GetVirtualFindData(
    HANDLE hPlugin,
    PluginPanelItem **pPanelItem,
    int *pItemsNumber,
    const wchar_t *Path
)
{
	BOOL bResult = FALSE;

	if (pGetVirtualFindDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETVIRTUALFINDDATA;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pGetVirtualFindDataW(hPlugin, pPanelItem, pItemsNumber, Path), es);
		bResult = es.bResult;
	}

	return bResult;
}


void PluginW::FreeVirtualFindData(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber
)
{
	if (pFreeVirtualFindDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_FREEVIRTUALFINDDATA;
		EXECUTE_FUNCTION(pFreeVirtualFindDataW(hPlugin, PanelItem, ItemsNumber), es);
		(void)es; // supress 'set but not used' warning
	}
}



int PluginW::GetFiles(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber,
    int Move,
    const wchar_t **DestPath,
    int OpMode
)
{
	int nResult = -1;

	if (pGetFilesW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETFILES;
		es.nDefaultResult = -1;
		EXECUTE_FUNCTION_EX(pGetFilesW(hPlugin, PanelItem, ItemsNumber, Move, DestPath, OpMode), es);
		nResult = (int)es.nResult;
	}

	return nResult;
}


int PluginW::PutFiles(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber,
    int Move,
    int OpMode
)
{
	int nResult = -1;

	if (pPutFilesW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PUTFILES;
		es.nDefaultResult = -1;
		static FARString strCurrentDirectory;
		apiGetCurrentDirectory(strCurrentDirectory);
		EXECUTE_FUNCTION_EX(pPutFilesW(hPlugin, PanelItem, ItemsNumber, Move, strCurrentDirectory, OpMode), es);
		nResult = (int)es.nResult;
	}

	return nResult;
}

int PluginW::DeleteFiles(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber,
    int OpMode
)
{
	BOOL bResult = FALSE;

	if (pDeleteFilesW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_DELETEFILES;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pDeleteFilesW(hPlugin, PanelItem, ItemsNumber, OpMode), es);
		bResult = (int)es.bResult;
	}

	return bResult;
}


int PluginW::MakeDirectory(
    HANDLE hPlugin,
    const wchar_t **Name,
    int OpMode
)
{
	int nResult = -1;

	if (pMakeDirectoryW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_MAKEDIRECTORY;
		es.nDefaultResult = -1;
		EXECUTE_FUNCTION_EX(pMakeDirectoryW(hPlugin, Name, OpMode), es);
		nResult = (int)es.nResult;
	}

	return nResult;
}


int PluginW::ProcessHostFile(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber,
    int OpMode
)
{
	BOOL bResult = FALSE;

	if (pProcessHostFileW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSHOSTFILE;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pProcessHostFileW(hPlugin, PanelItem, ItemsNumber, OpMode), es);
		bResult = es.bResult;
	}

	return bResult;
}


int PluginW::ProcessEvent(
    HANDLE hPlugin,
    int Event,
    PVOID Param
)
{
	BOOL bResult = FALSE;

	if (pProcessEventW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSEVENT;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pProcessEventW(hPlugin, Event, Param), es);
		bResult = es.bResult;
	}

	return bResult;
}


int PluginW::Compare(
    HANDLE hPlugin,
    const PluginPanelItem *Item1,
    const PluginPanelItem *Item2,
    DWORD Mode
)
{
	int nResult = -2;

	if (pCompareW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_COMPARE;
		es.nDefaultResult = -2;
		EXECUTE_FUNCTION_EX(pCompareW(hPlugin, Item1, Item2, Mode), es);
		nResult = (int)es.nResult;
	}

	return nResult;
}


int PluginW::GetFindData(
    HANDLE hPlugin,
    PluginPanelItem **pPanelItem,
    int *pItemsNumber,
    int OpMode
)
{
	BOOL bResult = FALSE;

	if (pGetFindDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETFINDDATA;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pGetFindDataW(hPlugin, pPanelItem, pItemsNumber, OpMode), es);
		bResult = es.bResult;
	}

	return bResult;
}


void PluginW::FreeFindData(
    HANDLE hPlugin,
    PluginPanelItem *PanelItem,
    int ItemsNumber
)
{
	if (pFreeFindDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_FREEFINDDATA;
		EXECUTE_FUNCTION(pFreeFindDataW(hPlugin, PanelItem, ItemsNumber), es);
		(void)es; // supress 'set but not used' warning
	}
}

int PluginW::ProcessKey(
    HANDLE hPlugin,
    int Key,
    unsigned int dwControlState
)
{
	BOOL bResult = FALSE;

	if (pProcessKeyW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_PROCESSKEY;
		es.bDefaultResult = TRUE; // do not pass this key to far on exception
		EXECUTE_FUNCTION_EX(pProcessKeyW(hPlugin, Key, dwControlState), es);
		bResult = es.bResult;
	}

	return bResult;
}


void PluginW::ClosePlugin(
    HANDLE hPlugin
)
{
	if (pClosePluginW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_CLOSEPLUGIN;
		EXECUTE_FUNCTION(pClosePluginW(hPlugin), es);
		(void)es; // supress 'set but not used' warning
	}

//	m_pManager->m_pCurrentPlugin = (Plugin*)-1;
}


int PluginW::SetDirectory(
    HANDLE hPlugin,
    const wchar_t *Dir,
    int OpMode
)
{
	BOOL bResult = FALSE;

	if (pSetDirectoryW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_SETDIRECTORY;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pSetDirectoryW(hPlugin, Dir, OpMode), es);
		bResult = es.bResult;
	}

	return bResult;
}


void PluginW::GetOpenPluginInfo(
    HANDLE hPlugin,
    OpenPluginInfo *pInfo
)
{
//	m_pManager->m_pCurrentPlugin = this;
	pInfo->StructSize = sizeof(OpenPluginInfo);

	if (pGetOpenPluginInfoW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETOPENPLUGININFO;
		EXECUTE_FUNCTION(pGetOpenPluginInfoW(hPlugin, pInfo), es);
		(void)es; // supress 'set but not used' warning
	}
}


int PluginW::Configure(
    int MenuItem
)
{
	BOOL bResult = FALSE;

	if (Load() && pConfigureW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_CONFIGURE;
		es.bDefaultResult = FALSE;
		EXECUTE_FUNCTION_EX(pConfigureW(MenuItem), es);
		bResult = es.bResult;
	}

	return bResult;
}


bool PluginW::GetPluginInfo(PluginInfo *pi)
{
	memset(pi, 0, sizeof(PluginInfo));

	if (pGetPluginInfoW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETPLUGININFO;
		EXECUTE_FUNCTION(pGetPluginInfoW(pi), es);

		if (!es.bUnloaded)
			return true;
	}

	return false;
}

int PluginW::GetCustomData(const wchar_t *FilePath, wchar_t **CustomData)
{
	if (Load() && pGetCustomDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_GETCUSTOMDATA;
		es.bDefaultResult = 0;
		es.bResult = 0;
		EXECUTE_FUNCTION_EX(pGetCustomDataW(FilePath, CustomData), es);
		return es.bResult;
	}

	return 0;
}

void PluginW::FreeCustomData(wchar_t *CustomData)
{
	if (Load() && pFreeCustomDataW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_FREECUSTOMDATA;
		EXECUTE_FUNCTION(pFreeCustomDataW(CustomData), es);
		(void)es; // supress 'set but not used' warning
	}
}

bool PluginW::MayExitFAR()
{
	if (pMayExitFARW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_MAYEXITFAR;
		es.bDefaultResult = 1;
		EXECUTE_FUNCTION_EX(pMayExitFARW(), es);
		return es.bResult;
	}

	return true;
}

void PluginW::ExitFAR()
{
	if (pExitFARW)
	{
		ExecuteStruct es;
		es.id = EXCEPT_EXITFAR;
		EXECUTE_FUNCTION(pExitFARW(), es);
		(void)es; // supress 'set but not used' warning
	}
}

void PluginW::ClearExports()
{
	pSetStartupInfoW = nullptr;
	pOpenPluginW = nullptr;
	pOpenFilePluginW = nullptr;
	pClosePluginW = nullptr;
	pGetPluginInfoW = nullptr;
	pGetOpenPluginInfoW = nullptr;
	pGetFindDataW = nullptr;
	pFreeFindDataW = nullptr;
	pGetVirtualFindDataW = nullptr;
	pFreeVirtualFindDataW = nullptr;
	pSetDirectoryW = nullptr;
	pGetFilesW = nullptr;
	pPutFilesW = nullptr;
	pDeleteFilesW = nullptr;
	pMakeDirectoryW = nullptr;
	pProcessHostFileW = nullptr;
	pSetFindListW = nullptr;
	pConfigureW = nullptr;
	pExitFARW = nullptr;
	pMayExitFARW = nullptr;
	pProcessKeyW = nullptr;
	pProcessEventW = nullptr;
	pCompareW = nullptr;
	pProcessEditorInputW = nullptr;
	pProcessEditorEventW = nullptr;
	pProcessViewerEventW = nullptr;
	pProcessDialogEventW = nullptr;
	pProcessSynchroEventW = nullptr;
#if defined(PROCPLUGINMACROFUNC)
	pProcessMacroFuncW = nullptr;
#endif
	pMinFarVersionW = nullptr;
	pAnalyseW = nullptr;
	pGetCustomDataW = nullptr;
	pFreeCustomDataW = nullptr;
}