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dashley |
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/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $ */
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/*
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* tclWin32Dll.c --
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*
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* This file contains the DLL entry point.
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*
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* Copyright (c) 1995-1996 Sun Microsystems, Inc.
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* Copyright (c) 1998-2000 Scriptics Corporation.
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*
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* See the file "license.terms" for information on usage and redistribution
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* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
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*
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* RCS: @(#) $Id: tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $
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*/
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#include "tclWinInt.h"
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/*
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* The following data structures are used when loading the thunking
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* library for execing child processes under Win32s.
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*/
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typedef DWORD (WINAPI UT32PROC)(LPVOID lpBuff, DWORD dwUserDefined,
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LPVOID *lpTranslationList);
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typedef BOOL (WINAPI UTREGISTER)(HANDLE hModule, LPCSTR SixteenBitDLL,
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LPCSTR InitName, LPCSTR ProcName, UT32PROC **ThirtyTwoBitThunk,
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FARPROC UT32Callback, LPVOID Buff);
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typedef VOID (WINAPI UTUNREGISTER)(HANDLE hModule);
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/*
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* The following variables keep track of information about this DLL
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* on a per-instance basis. Each time this DLL is loaded, it gets its own
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* new data segment with its own copy of all static and global information.
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*/
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static HINSTANCE hInstance; /* HINSTANCE of this DLL. */
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static int platformId; /* Running under NT, or 95/98? */
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/*
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* The following function tables are used to dispatch to either the
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* wide-character or multi-byte versions of the operating system calls,
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* depending on whether the Unicode calls are available.
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*/
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static TclWinProcs asciiProcs = {
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0,
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(BOOL (WINAPI *)(CONST TCHAR *, LPDCB)) BuildCommDCBA,
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(TCHAR *(WINAPI *)(TCHAR *)) CharLowerA,
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(BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *, BOOL)) CopyFileA,
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(BOOL (WINAPI *)(CONST TCHAR *, LPSECURITY_ATTRIBUTES)) CreateDirectoryA,
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(HANDLE (WINAPI *)(CONST TCHAR *, DWORD, DWORD, SECURITY_ATTRIBUTES *,
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DWORD, DWORD, HANDLE)) CreateFileA,
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(BOOL (WINAPI *)(CONST TCHAR *, TCHAR *, LPSECURITY_ATTRIBUTES,
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LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *,
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LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessA,
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(BOOL (WINAPI *)(CONST TCHAR *)) DeleteFileA,
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(HANDLE (WINAPI *)(CONST TCHAR *, WIN32_FIND_DATAT *)) FindFirstFileA,
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(BOOL (WINAPI *)(HANDLE, WIN32_FIND_DATAT *)) FindNextFileA,
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(BOOL (WINAPI *)(WCHAR *, LPDWORD)) GetComputerNameA,
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(DWORD (WINAPI *)(DWORD, WCHAR *)) GetCurrentDirectoryA,
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(DWORD (WINAPI *)(CONST TCHAR *)) GetFileAttributesA,
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(DWORD (WINAPI *)(CONST TCHAR *, DWORD nBufferLength, WCHAR *,
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TCHAR **)) GetFullPathNameA,
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(DWORD (WINAPI *)(HMODULE, WCHAR *, int)) GetModuleFileNameA,
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(DWORD (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD)) GetShortPathNameA,
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(UINT (WINAPI *)(CONST TCHAR *, CONST TCHAR *, UINT uUnique,
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WCHAR *)) GetTempFileNameA,
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(DWORD (WINAPI *)(DWORD, WCHAR *)) GetTempPathA,
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(BOOL (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD,
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WCHAR *, DWORD)) GetVolumeInformationA,
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(HINSTANCE (WINAPI *)(CONST TCHAR *)) LoadLibraryA,
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(TCHAR (WINAPI *)(WCHAR *, CONST TCHAR *)) lstrcpyA,
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(BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *)) MoveFileA,
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(BOOL (WINAPI *)(CONST TCHAR *)) RemoveDirectoryA,
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(DWORD (WINAPI *)(CONST TCHAR *, CONST TCHAR *, CONST TCHAR *, DWORD,
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WCHAR *, TCHAR **)) SearchPathA,
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(BOOL (WINAPI *)(CONST TCHAR *)) SetCurrentDirectoryA,
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(BOOL (WINAPI *)(CONST TCHAR *, DWORD)) SetFileAttributesA,
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};
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static TclWinProcs unicodeProcs = {
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1,
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(BOOL (WINAPI *)(CONST TCHAR *, LPDCB)) BuildCommDCBW,
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(TCHAR *(WINAPI *)(TCHAR *)) CharLowerW,
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(BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *, BOOL)) CopyFileW,
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(BOOL (WINAPI *)(CONST TCHAR *, LPSECURITY_ATTRIBUTES)) CreateDirectoryW,
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(HANDLE (WINAPI *)(CONST TCHAR *, DWORD, DWORD, SECURITY_ATTRIBUTES *,
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DWORD, DWORD, HANDLE)) CreateFileW,
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(BOOL (WINAPI *)(CONST TCHAR *, TCHAR *, LPSECURITY_ATTRIBUTES,
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LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *,
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LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessW,
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(BOOL (WINAPI *)(CONST TCHAR *)) DeleteFileW,
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(HANDLE (WINAPI *)(CONST TCHAR *, WIN32_FIND_DATAT *)) FindFirstFileW,
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(BOOL (WINAPI *)(HANDLE, WIN32_FIND_DATAT *)) FindNextFileW,
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(BOOL (WINAPI *)(WCHAR *, LPDWORD)) GetComputerNameW,
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(DWORD (WINAPI *)(DWORD, WCHAR *)) GetCurrentDirectoryW,
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(DWORD (WINAPI *)(CONST TCHAR *)) GetFileAttributesW,
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(DWORD (WINAPI *)(CONST TCHAR *, DWORD nBufferLength, WCHAR *,
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TCHAR **)) GetFullPathNameW,
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(DWORD (WINAPI *)(HMODULE, WCHAR *, int)) GetModuleFileNameW,
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(DWORD (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD)) GetShortPathNameW,
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(UINT (WINAPI *)(CONST TCHAR *, CONST TCHAR *, UINT uUnique,
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WCHAR *)) GetTempFileNameW,
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(DWORD (WINAPI *)(DWORD, WCHAR *)) GetTempPathW,
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(BOOL (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD,
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WCHAR *, DWORD)) GetVolumeInformationW,
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(HINSTANCE (WINAPI *)(CONST TCHAR *)) LoadLibraryW,
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(TCHAR (WINAPI *)(WCHAR *, CONST TCHAR *)) lstrcpyW,
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(BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *)) MoveFileW,
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(BOOL (WINAPI *)(CONST TCHAR *)) RemoveDirectoryW,
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(DWORD (WINAPI *)(CONST TCHAR *, CONST TCHAR *, CONST TCHAR *, DWORD,
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WCHAR *, TCHAR **)) SearchPathW,
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(BOOL (WINAPI *)(CONST TCHAR *)) SetCurrentDirectoryW,
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(BOOL (WINAPI *)(CONST TCHAR *, DWORD)) SetFileAttributesW,
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};
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TclWinProcs *tclWinProcs;
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static Tcl_Encoding tclWinTCharEncoding;
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/*
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* The following declaration is for the VC++ DLL entry point.
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*/
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BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason,
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LPVOID reserved);
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#ifdef __WIN32__
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#ifndef STATIC_BUILD
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/*
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*----------------------------------------------------------------------
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*
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* DllEntryPoint --
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*
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* This wrapper function is used by Borland to invoke the
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* initialization code for Tcl. It simply calls the DllMain
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* routine.
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*
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* Results:
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* See DllMain.
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*
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* Side effects:
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* See DllMain.
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*
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*----------------------------------------------------------------------
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*/
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BOOL APIENTRY
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DllEntryPoint(hInst, reason, reserved)
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HINSTANCE hInst; /* Library instance handle. */
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DWORD reason; /* Reason this function is being called. */
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LPVOID reserved; /* Not used. */
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{
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return DllMain(hInst, reason, reserved);
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}
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/*
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*----------------------------------------------------------------------
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*
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* DllMain --
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*
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* This routine is called by the VC++ C run time library init
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* code, or the DllEntryPoint routine. It is responsible for
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* initializing various dynamically loaded libraries.
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*
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* Results:
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* TRUE on sucess, FALSE on failure.
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*
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* Side effects:
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* Establishes 32-to-16 bit thunk and initializes sockets library.
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*
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*----------------------------------------------------------------------
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*/
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BOOL APIENTRY
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DllMain(hInst, reason, reserved)
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HINSTANCE hInst; /* Library instance handle. */
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DWORD reason; /* Reason this function is being called. */
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LPVOID reserved; /* Not used. */
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{
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switch (reason) {
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case DLL_PROCESS_ATTACH:
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TclWinInit(hInst);
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return TRUE;
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case DLL_PROCESS_DETACH:
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if (hInst == hInstance) {
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Tcl_Finalize();
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}
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break;
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}
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return TRUE;
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}
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#endif /* !STATIC_BUILD */
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#endif /* __WIN32__ */
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/*
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*----------------------------------------------------------------------
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*
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* TclWinGetTclInstance --
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*
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* Retrieves the global library instance handle.
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*
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* Results:
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* Returns the global library instance handle.
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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*/
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HINSTANCE
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TclWinGetTclInstance()
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{
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return hInstance;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TclWinInit --
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*
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* This function initializes the internal state of the tcl library.
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*
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* Results:
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* None.
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*
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* Side effects:
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* Initializes the tclPlatformId variable.
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*
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*----------------------------------------------------------------------
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*/
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void
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TclWinInit(hInst)
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HINSTANCE hInst; /* Library instance handle. */
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{
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OSVERSIONINFO os;
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hInstance = hInst;
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os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
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GetVersionEx(&os);
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platformId = os.dwPlatformId;
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/*
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* We no longer support Win32s, so just in case someone manages to
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* get a runtime there, make sure they know that.
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*/
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if (platformId == VER_PLATFORM_WIN32s) {
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panic("Win32s is not a supported platform");
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}
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tclWinProcs = &asciiProcs;
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}
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/*
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*----------------------------------------------------------------------
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*
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* TclWinGetPlatformId --
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*
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* Determines whether running under NT, 95, or Win32s, to allow
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* runtime conditional code.
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*
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* Results:
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* The return value is one of:
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* VER_PLATFORM_WIN32s Win32s on Windows 3.1. (not supported)
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* VER_PLATFORM_WIN32_WINDOWS Win32 on Windows 95.
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* VER_PLATFORM_WIN32_NT Win32 on Windows NT
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*
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* Side effects:
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* None.
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*
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*----------------------------------------------------------------------
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284 |
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*/
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int
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TclWinGetPlatformId()
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{
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return platformId;
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}
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291 |
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292 |
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/*
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293 |
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*-------------------------------------------------------------------------
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294 |
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*
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295 |
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* TclWinNoBackslash --
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*
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297 |
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* We're always iterating through a string in Windows, changing the
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* backslashes to slashes for use in Tcl.
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*
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300 |
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* Results:
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301 |
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* All backslashes in given string are changed to slashes.
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*
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303 |
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* Side effects:
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* None.
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305 |
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*
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306 |
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*-------------------------------------------------------------------------
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307 |
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*/
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308 |
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309 |
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char *
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TclWinNoBackslash(
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char *path) /* String to change. */
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{
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313 |
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char *p;
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314 |
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315 |
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for (p = path; *p != '\0'; p++) {
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316 |
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if (*p == '\\') {
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317 |
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*p = '/';
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318 |
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}
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319 |
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}
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320 |
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return path;
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321 |
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}
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322 |
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|
323 |
|
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/*
|
324 |
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|
*----------------------------------------------------------------------
|
325 |
|
|
*
|
326 |
|
|
* TclpCheckStackSpace --
|
327 |
|
|
*
|
328 |
|
|
* Detect if we are about to blow the stack. Called before an
|
329 |
|
|
* evaluation can happen when nesting depth is checked.
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330 |
|
|
*
|
331 |
|
|
* Results:
|
332 |
|
|
* 1 if there is enough stack space to continue; 0 if not.
|
333 |
|
|
*
|
334 |
|
|
* Side effects:
|
335 |
|
|
* None.
|
336 |
|
|
*
|
337 |
|
|
*----------------------------------------------------------------------
|
338 |
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|
*/
|
339 |
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|
|
340 |
|
|
int
|
341 |
|
|
TclpCheckStackSpace()
|
342 |
|
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{
|
343 |
|
|
/*
|
344 |
|
|
* We can recurse only if there is at least TCL_WIN_STACK_THRESHOLD
|
345 |
|
|
* bytes of stack space left. alloca() is cheap on windows; basically
|
346 |
|
|
* it just subtracts from the stack pointer causing the OS to throw an
|
347 |
|
|
* exception if the stack pointer is set below the bottom of the stack.
|
348 |
|
|
*/
|
349 |
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|
350 |
|
|
__try {
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351 |
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|
alloca(TCL_WIN_STACK_THRESHOLD);
|
352 |
|
|
return 1;
|
353 |
|
|
} __except (1) {}
|
354 |
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|
355 |
|
|
return 0;
|
356 |
|
|
}
|
357 |
|
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|
358 |
|
|
|
359 |
|
|
/*
|
360 |
|
|
*----------------------------------------------------------------------
|
361 |
|
|
*
|
362 |
|
|
* TclWinGetPlatform --
|
363 |
|
|
*
|
364 |
|
|
* This is a kludge that allows the test library to get access
|
365 |
|
|
* the internal tclPlatform variable.
|
366 |
|
|
*
|
367 |
|
|
* Results:
|
368 |
|
|
* Returns a pointer to the tclPlatform variable.
|
369 |
|
|
*
|
370 |
|
|
* Side effects:
|
371 |
|
|
* None.
|
372 |
|
|
*
|
373 |
|
|
*----------------------------------------------------------------------
|
374 |
|
|
*/
|
375 |
|
|
|
376 |
|
|
TclPlatformType *
|
377 |
|
|
TclWinGetPlatform()
|
378 |
|
|
{
|
379 |
|
|
return &tclPlatform;
|
380 |
|
|
}
|
381 |
|
|
|
382 |
|
|
/*
|
383 |
|
|
*---------------------------------------------------------------------------
|
384 |
|
|
*
|
385 |
|
|
* TclWinSetInterfaces --
|
386 |
|
|
*
|
387 |
|
|
* A helper proc that allows the test library to change the
|
388 |
|
|
* tclWinProcs structure to dispatch to either the wide-character
|
389 |
|
|
* or multi-byte versions of the operating system calls, depending
|
390 |
|
|
* on whether Unicode is the system encoding.
|
391 |
|
|
*
|
392 |
|
|
* Results:
|
393 |
|
|
* None.
|
394 |
|
|
*
|
395 |
|
|
* Side effects:
|
396 |
|
|
* None.
|
397 |
|
|
*
|
398 |
|
|
*---------------------------------------------------------------------------
|
399 |
|
|
*/
|
400 |
|
|
|
401 |
|
|
void
|
402 |
|
|
TclWinSetInterfaces(
|
403 |
|
|
int wide) /* Non-zero to use wide interfaces, 0
|
404 |
|
|
* otherwise. */
|
405 |
|
|
{
|
406 |
|
|
Tcl_FreeEncoding(tclWinTCharEncoding);
|
407 |
|
|
|
408 |
|
|
if (wide) {
|
409 |
|
|
tclWinProcs = &unicodeProcs;
|
410 |
|
|
tclWinTCharEncoding = Tcl_GetEncoding(NULL, "unicode");
|
411 |
|
|
} else {
|
412 |
|
|
tclWinProcs = &asciiProcs;
|
413 |
|
|
tclWinTCharEncoding = NULL;
|
414 |
|
|
}
|
415 |
|
|
}
|
416 |
|
|
|
417 |
|
|
/*
|
418 |
|
|
*---------------------------------------------------------------------------
|
419 |
|
|
*
|
420 |
|
|
* Tcl_WinUtfToTChar, Tcl_WinTCharToUtf --
|
421 |
|
|
*
|
422 |
|
|
* Convert between UTF-8 and Unicode when running Windows NT or
|
423 |
|
|
* the current ANSI code page when running Windows 95.
|
424 |
|
|
*
|
425 |
|
|
* On Mac, Unix, and Windows 95, all strings exchanged between Tcl
|
426 |
|
|
* and the OS are "char" oriented. We need only one Tcl_Encoding to
|
427 |
|
|
* convert between UTF-8 and the system's native encoding. We use
|
428 |
|
|
* NULL to represent that encoding.
|
429 |
|
|
*
|
430 |
|
|
* On NT, some strings exchanged between Tcl and the OS are "char"
|
431 |
|
|
* oriented, while others are in Unicode. We need two Tcl_Encoding
|
432 |
|
|
* APIs depending on whether we are targeting a "char" or Unicode
|
433 |
|
|
* interface.
|
434 |
|
|
*
|
435 |
|
|
* Calling Tcl_UtfToExternal() or Tcl_ExternalToUtf() with an
|
436 |
|
|
* encoding of NULL should always used to convert between UTF-8
|
437 |
|
|
* and the system's "char" oriented encoding. The following two
|
438 |
|
|
* functions are used in Windows-specific code to convert between
|
439 |
|
|
* UTF-8 and Unicode strings (NT) or "char" strings(95). This saves
|
440 |
|
|
* you the trouble of writing the following type of fragment over and
|
441 |
|
|
* over:
|
442 |
|
|
*
|
443 |
|
|
* if (running NT) {
|
444 |
|
|
* encoding <- Tcl_GetEncoding("unicode");
|
445 |
|
|
* nativeBuffer <- UtfToExternal(encoding, utfBuffer);
|
446 |
|
|
* Tcl_FreeEncoding(encoding);
|
447 |
|
|
* } else {
|
448 |
|
|
* nativeBuffer <- UtfToExternal(NULL, utfBuffer);
|
449 |
|
|
* }
|
450 |
|
|
*
|
451 |
|
|
* By convention, in Windows a TCHAR is a character in the ANSI code
|
452 |
|
|
* page on Windows 95, a Unicode character on Windows NT. If you
|
453 |
|
|
* plan on targeting a Unicode interfaces when running on NT and a
|
454 |
|
|
* "char" oriented interface while running on 95, these functions
|
455 |
|
|
* should be used. If you plan on targetting the same "char"
|
456 |
|
|
* oriented function on both 95 and NT, use Tcl_UtfToExternal()
|
457 |
|
|
* with an encoding of NULL.
|
458 |
|
|
*
|
459 |
|
|
* Results:
|
460 |
|
|
* The result is a pointer to the string in the desired target
|
461 |
|
|
* encoding. Storage for the result string is allocated in
|
462 |
|
|
* dsPtr; the caller must call Tcl_DStringFree() when the result
|
463 |
|
|
* is no longer needed.
|
464 |
|
|
*
|
465 |
|
|
* Side effects:
|
466 |
|
|
* None.
|
467 |
|
|
*
|
468 |
|
|
*---------------------------------------------------------------------------
|
469 |
|
|
*/
|
470 |
|
|
|
471 |
|
|
TCHAR *
|
472 |
|
|
Tcl_WinUtfToTChar(string, len, dsPtr)
|
473 |
|
|
CONST char *string; /* Source string in UTF-8. */
|
474 |
|
|
int len; /* Source string length in bytes, or < 0 for
|
475 |
|
|
* strlen(). */
|
476 |
|
|
Tcl_DString *dsPtr; /* Uninitialized or free DString in which
|
477 |
|
|
* the converted string is stored. */
|
478 |
|
|
{
|
479 |
|
|
return (TCHAR *) Tcl_UtfToExternalDString(tclWinTCharEncoding,
|
480 |
|
|
string, len, dsPtr);
|
481 |
|
|
}
|
482 |
|
|
|
483 |
|
|
char *
|
484 |
|
|
Tcl_WinTCharToUtf(string, len, dsPtr)
|
485 |
|
|
CONST TCHAR *string; /* Source string in Unicode when running
|
486 |
|
|
* NT, ANSI when running 95. */
|
487 |
|
|
int len; /* Source string length in bytes, or < 0 for
|
488 |
|
|
* platform-specific string length. */
|
489 |
|
|
Tcl_DString *dsPtr; /* Uninitialized or free DString in which
|
490 |
|
|
* the converted string is stored. */
|
491 |
|
|
{
|
492 |
|
|
return Tcl_ExternalToUtfDString(tclWinTCharEncoding,
|
493 |
|
|
(CONST char *) string, len, dsPtr);
|
494 |
|
|
}
|
495 |
|
|
|
496 |
|
|
|
497 |
|
|
/* $History: tclwin32dll.c $
|
498 |
|
|
*
|
499 |
|
|
* ***************** Version 1 *****************
|
500 |
|
|
* User: Dtashley Date: 1/02/01 Time: 12:51a
|
501 |
|
|
* Created in $/IjuScripter, IjuConsole/Source/Tcl Base
|
502 |
|
|
* Initial check-in.
|
503 |
|
|
*/
|
504 |
|
|
|
505 |
|
|
/* End of TCLWIN32DLL.C */ |