shared_source/c_tcl_base_7_5_w_mods/tclwin32dll.c

/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $ */

/* 
 * tclWin32Dll.c --
 *
 *      This file contains the DLL entry point.
 *
 * Copyright (c) 1995-1996 Sun Microsystems, Inc.
 * Copyright (c) 1998-2000 Scriptics Corporation.
 *
 * See the file "license.terms" for information on usage and redistribution
 * of this file, and for a DISCLAIMER OF ALL WARRANTIES.
 *
 * RCS: @(#) $Id: tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $
 */

#include "tclWinInt.h"

/*
 * The following data structures are used when loading the thunking 
 * library for execing child processes under Win32s.
 */

typedef DWORD (WINAPI UT32PROC)(LPVOID lpBuff, DWORD dwUserDefined,
        LPVOID *lpTranslationList);

typedef BOOL (WINAPI UTREGISTER)(HANDLE hModule, LPCSTR SixteenBitDLL,
        LPCSTR InitName, LPCSTR ProcName, UT32PROC **ThirtyTwoBitThunk,
        FARPROC UT32Callback, LPVOID Buff);

typedef VOID (WINAPI UTUNREGISTER)(HANDLE hModule);

/* 
 * The following variables keep track of information about this DLL
 * on a per-instance basis.  Each time this DLL is loaded, it gets its own 
 * new data segment with its own copy of all static and global information.
 */

static HINSTANCE hInstance;     /* HINSTANCE of this DLL. */
static int platformId;          /* Running under NT, or 95/98? */

/*
 * The following function tables are used to dispatch to either the
 * wide-character or multi-byte versions of the operating system calls,
 * depending on whether the Unicode calls are available.
 */

static TclWinProcs asciiProcs = {
    0,

    (BOOL (WINAPI *)(CONST TCHAR *, LPDCB)) BuildCommDCBA,
    (TCHAR *(WINAPI *)(TCHAR *)) CharLowerA,
    (BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *, BOOL)) CopyFileA,
    (BOOL (WINAPI *)(CONST TCHAR *, LPSECURITY_ATTRIBUTES)) CreateDirectoryA,
    (HANDLE (WINAPI *)(CONST TCHAR *, DWORD, DWORD, SECURITY_ATTRIBUTES *, 
            DWORD, DWORD, HANDLE)) CreateFileA,
    (BOOL (WINAPI *)(CONST TCHAR *, TCHAR *, LPSECURITY_ATTRIBUTES, 
            LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *, 
            LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessA,
    (BOOL (WINAPI *)(CONST TCHAR *)) DeleteFileA,
    (HANDLE (WINAPI *)(CONST TCHAR *, WIN32_FIND_DATAT *)) FindFirstFileA,
    (BOOL (WINAPI *)(HANDLE, WIN32_FIND_DATAT *)) FindNextFileA,
    (BOOL (WINAPI *)(WCHAR *, LPDWORD)) GetComputerNameA,
    (DWORD (WINAPI *)(DWORD, WCHAR *)) GetCurrentDirectoryA,
    (DWORD (WINAPI *)(CONST TCHAR *)) GetFileAttributesA,
    (DWORD (WINAPI *)(CONST TCHAR *, DWORD nBufferLength, WCHAR *, 
            TCHAR **)) GetFullPathNameA,
    (DWORD (WINAPI *)(HMODULE, WCHAR *, int)) GetModuleFileNameA,
    (DWORD (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD)) GetShortPathNameA,
    (UINT (WINAPI *)(CONST TCHAR *, CONST TCHAR *, UINT uUnique, 
            WCHAR *)) GetTempFileNameA,
    (DWORD (WINAPI *)(DWORD, WCHAR *)) GetTempPathA,
    (BOOL (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD,
            WCHAR *, DWORD)) GetVolumeInformationA,
    (HINSTANCE (WINAPI *)(CONST TCHAR *)) LoadLibraryA,
    (TCHAR (WINAPI *)(WCHAR *, CONST TCHAR *)) lstrcpyA,
    (BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *)) MoveFileA,
    (BOOL (WINAPI *)(CONST TCHAR *)) RemoveDirectoryA,
    (DWORD (WINAPI *)(CONST TCHAR *, CONST TCHAR *, CONST TCHAR *, DWORD, 
            WCHAR *, TCHAR **)) SearchPathA,
    (BOOL (WINAPI *)(CONST TCHAR *)) SetCurrentDirectoryA,
    (BOOL (WINAPI *)(CONST TCHAR *, DWORD)) SetFileAttributesA,
};

static TclWinProcs unicodeProcs = {
    1,

    (BOOL (WINAPI *)(CONST TCHAR *, LPDCB)) BuildCommDCBW,
    (TCHAR *(WINAPI *)(TCHAR *)) CharLowerW,
    (BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *, BOOL)) CopyFileW,
    (BOOL (WINAPI *)(CONST TCHAR *, LPSECURITY_ATTRIBUTES)) CreateDirectoryW,
    (HANDLE (WINAPI *)(CONST TCHAR *, DWORD, DWORD, SECURITY_ATTRIBUTES *, 
            DWORD, DWORD, HANDLE)) CreateFileW,
    (BOOL (WINAPI *)(CONST TCHAR *, TCHAR *, LPSECURITY_ATTRIBUTES, 
            LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *, 
            LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessW,
    (BOOL (WINAPI *)(CONST TCHAR *)) DeleteFileW,
    (HANDLE (WINAPI *)(CONST TCHAR *, WIN32_FIND_DATAT *)) FindFirstFileW,
    (BOOL (WINAPI *)(HANDLE, WIN32_FIND_DATAT *)) FindNextFileW,
    (BOOL (WINAPI *)(WCHAR *, LPDWORD)) GetComputerNameW,
    (DWORD (WINAPI *)(DWORD, WCHAR *)) GetCurrentDirectoryW,
    (DWORD (WINAPI *)(CONST TCHAR *)) GetFileAttributesW,
    (DWORD (WINAPI *)(CONST TCHAR *, DWORD nBufferLength, WCHAR *, 
            TCHAR **)) GetFullPathNameW,
    (DWORD (WINAPI *)(HMODULE, WCHAR *, int)) GetModuleFileNameW,
    (DWORD (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD)) GetShortPathNameW,
    (UINT (WINAPI *)(CONST TCHAR *, CONST TCHAR *, UINT uUnique, 
            WCHAR *)) GetTempFileNameW,
    (DWORD (WINAPI *)(DWORD, WCHAR *)) GetTempPathW,
    (BOOL (WINAPI *)(CONST TCHAR *, WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD, 
            WCHAR *, DWORD)) GetVolumeInformationW,
    (HINSTANCE (WINAPI *)(CONST TCHAR *)) LoadLibraryW,
    (TCHAR (WINAPI *)(WCHAR *, CONST TCHAR *)) lstrcpyW,
    (BOOL (WINAPI *)(CONST TCHAR *, CONST TCHAR *)) MoveFileW,
    (BOOL (WINAPI *)(CONST TCHAR *)) RemoveDirectoryW,
    (DWORD (WINAPI *)(CONST TCHAR *, CONST TCHAR *, CONST TCHAR *, DWORD, 
            WCHAR *, TCHAR **)) SearchPathW,
    (BOOL (WINAPI *)(CONST TCHAR *)) SetCurrentDirectoryW,
    (BOOL (WINAPI *)(CONST TCHAR *, DWORD)) SetFileAttributesW,
};

TclWinProcs *tclWinProcs;
static Tcl_Encoding tclWinTCharEncoding;

/*
 * The following declaration is for the VC++ DLL entry point.
 */

BOOL APIENTRY           DllMain(HINSTANCE hInst, DWORD reason, 
                                LPVOID reserved);


#ifdef __WIN32__
#ifndef STATIC_BUILD


/*
 *----------------------------------------------------------------------
 *
 * DllEntryPoint --
 *
 *      This wrapper function is used by Borland to invoke the
 *      initialization code for Tcl.  It simply calls the DllMain
 *      routine.
 *
 * Results:
 *      See DllMain.
 *
 * Side effects:
 *      See DllMain.
 *
 *----------------------------------------------------------------------
 */

BOOL APIENTRY
DllEntryPoint(hInst, reason, reserved)
    HINSTANCE hInst;            /* Library instance handle. */
    DWORD reason;               /* Reason this function is being called. */
    LPVOID reserved;            /* Not used. */
{
    return DllMain(hInst, reason, reserved);
}

/*
 *----------------------------------------------------------------------
 *
 * DllMain --
 *
 *      This routine is called by the VC++ C run time library init
 *      code, or the DllEntryPoint routine.  It is responsible for
 *      initializing various dynamically loaded libraries.
 *
 * Results:
 *      TRUE on sucess, FALSE on failure.
 *
 * Side effects:
 *      Establishes 32-to-16 bit thunk and initializes sockets library.
 *
 *----------------------------------------------------------------------
 */
BOOL APIENTRY
DllMain(hInst, reason, reserved)
    HINSTANCE hInst;            /* Library instance handle. */
    DWORD reason;               /* Reason this function is being called. */
    LPVOID reserved;            /* Not used. */
{
    switch (reason) {
    case DLL_PROCESS_ATTACH:
        TclWinInit(hInst);
        return TRUE;

    case DLL_PROCESS_DETACH:
        if (hInst == hInstance) {
            Tcl_Finalize();
        }
        break;
    }

    return TRUE; 
}

#endif /* !STATIC_BUILD */
#endif /* __WIN32__ */

/*
 *----------------------------------------------------------------------
 *
 * TclWinGetTclInstance --
 *
 *      Retrieves the global library instance handle.
 *
 * Results:
 *      Returns the global library instance handle.
 *
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

HINSTANCE
TclWinGetTclInstance()
{
    return hInstance;
}

/*
 *----------------------------------------------------------------------
 *
 * TclWinInit --
 *
 *      This function initializes the internal state of the tcl library.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      Initializes the tclPlatformId variable.
 *
 *----------------------------------------------------------------------
 */

void
TclWinInit(hInst)
    HINSTANCE hInst;            /* Library instance handle. */
{
    OSVERSIONINFO os;

    hInstance = hInst;
    os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
    GetVersionEx(&os);
    platformId = os.dwPlatformId;

    /*
     * We no longer support Win32s, so just in case someone manages to
     * get a runtime there, make sure they know that.
     */

    if (platformId == VER_PLATFORM_WIN32s) {
        panic("Win32s is not a supported platform");    
    }

    tclWinProcs = &asciiProcs;
}

/*
 *----------------------------------------------------------------------
 *
 * TclWinGetPlatformId --
 *
 *      Determines whether running under NT, 95, or Win32s, to allow 
 *      runtime conditional code.
 *
 * Results:
 *      The return value is one of:
 *          VER_PLATFORM_WIN32s         Win32s on Windows 3.1. (not supported)
 *          VER_PLATFORM_WIN32_WINDOWS  Win32 on Windows 95.
 *          VER_PLATFORM_WIN32_NT       Win32 on Windows NT
 *
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

int             
TclWinGetPlatformId()
{
    return platformId;
}

/*
 *-------------------------------------------------------------------------
 *
 * TclWinNoBackslash --
 *
 *      We're always iterating through a string in Windows, changing the
 *      backslashes to slashes for use in Tcl.
 *
 * Results:
 *      All backslashes in given string are changed to slashes.
 *
 * Side effects:
 *      None.
 *
 *-------------------------------------------------------------------------
 */

char *
TclWinNoBackslash(
    char *path)                 /* String to change. */
{
    char *p;

    for (p = path; *p != '\0'; p++) {
        if (*p == '\\') {
            *p = '/';
        }
    }
    return path;
}

/*
 *----------------------------------------------------------------------
 *
 * TclpCheckStackSpace --
 *
 *      Detect if we are about to blow the stack.  Called before an 
 *      evaluation can happen when nesting depth is checked.
 *
 * Results:
 *      1 if there is enough stack space to continue; 0 if not.
 *
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

int
TclpCheckStackSpace()
{
    /*
     * We can recurse only if there is at least TCL_WIN_STACK_THRESHOLD
     * bytes of stack space left.  alloca() is cheap on windows; basically
     * it just subtracts from the stack pointer causing the OS to throw an
     * exception if the stack pointer is set below the bottom of the stack.
     */

    __try {
        alloca(TCL_WIN_STACK_THRESHOLD);
        return 1;
    } __except (1) {}

    return 0;
}


/*
 *----------------------------------------------------------------------
 *
 * TclWinGetPlatform --
 *
 *      This is a kludge that allows the test library to get access
 *      the internal tclPlatform variable.
 *
 * Results:
 *      Returns a pointer to the tclPlatform variable.
 *
 * Side effects:
 *      None.
 *
 *----------------------------------------------------------------------
 */

TclPlatformType *
TclWinGetPlatform()
{
    return &tclPlatform;
}

/*
 *---------------------------------------------------------------------------
 *
 * TclWinSetInterfaces --
 *
 *      A helper proc that allows the test library to change the
 *      tclWinProcs structure to dispatch to either the wide-character
 *      or multi-byte versions of the operating system calls, depending
 *      on whether Unicode is the system encoding.
 *
 * Results:
 *      None.
 *
 * Side effects:
 *      None.
 *
 *---------------------------------------------------------------------------
 */

void
TclWinSetInterfaces(
    int wide)                   /* Non-zero to use wide interfaces, 0
                                 * otherwise. */
{
    Tcl_FreeEncoding(tclWinTCharEncoding);

    if (wide) {
        tclWinProcs = &unicodeProcs;
        tclWinTCharEncoding = Tcl_GetEncoding(NULL, "unicode");
    } else {
        tclWinProcs = &asciiProcs;
        tclWinTCharEncoding = NULL;
    }
}

/*
 *---------------------------------------------------------------------------
 *
 * Tcl_WinUtfToTChar, Tcl_WinTCharToUtf --
 *
 *      Convert between UTF-8 and Unicode when running Windows NT or 
 *      the current ANSI code page when running Windows 95.
 *
 *      On Mac, Unix, and Windows 95, all strings exchanged between Tcl
 *      and the OS are "char" oriented.  We need only one Tcl_Encoding to
 *      convert between UTF-8 and the system's native encoding.  We use
 *      NULL to represent that encoding.
 *
 *      On NT, some strings exchanged between Tcl and the OS are "char"
 *      oriented, while others are in Unicode.  We need two Tcl_Encoding
 *      APIs depending on whether we are targeting a "char" or Unicode
 *      interface.  
 *
 *      Calling Tcl_UtfToExternal() or Tcl_ExternalToUtf() with an
 *      encoding of NULL should always used to convert between UTF-8
 *      and the system's "char" oriented encoding.  The following two
 *      functions are used in Windows-specific code to convert between
 *      UTF-8 and Unicode strings (NT) or "char" strings(95).  This saves
 *      you the trouble of writing the following type of fragment over and
 *      over:
 *
 *              if (running NT) {
 *                  encoding <- Tcl_GetEncoding("unicode");
 *                  nativeBuffer <- UtfToExternal(encoding, utfBuffer);
 *                  Tcl_FreeEncoding(encoding);
 *              } else {
 *                  nativeBuffer <- UtfToExternal(NULL, utfBuffer);
 *              }
 *
 *      By convention, in Windows a TCHAR is a character in the ANSI code
 *      page on Windows 95, a Unicode character on Windows NT.  If you
 *      plan on targeting a Unicode interfaces when running on NT and a
 *      "char" oriented interface while running on 95, these functions
 *      should be used.  If you plan on targetting the same "char"
 *      oriented function on both 95 and NT, use Tcl_UtfToExternal()
 *      with an encoding of NULL.
 *
 * Results:
 *      The result is a pointer to the string in the desired target
 *      encoding.  Storage for the result string is allocated in
 *      dsPtr; the caller must call Tcl_DStringFree() when the result
 *      is no longer needed.
 *
 * Side effects:
 *      None.
 *
 *---------------------------------------------------------------------------
 */

TCHAR *
Tcl_WinUtfToTChar(string, len, dsPtr)
    CONST char *string;         /* Source string in UTF-8. */
    int len;                    /* Source string length in bytes, or < 0 for
                                 * strlen(). */
    Tcl_DString *dsPtr;         /* Uninitialized or free DString in which 
                                 * the converted string is stored. */
{
    return (TCHAR *) Tcl_UtfToExternalDString(tclWinTCharEncoding, 
            string, len, dsPtr);
}

char *
Tcl_WinTCharToUtf(string, len, dsPtr)
    CONST TCHAR *string;        /* Source string in Unicode when running
                                 * NT, ANSI when running 95. */
    int len;                    /* Source string length in bytes, or < 0 for
                                 * platform-specific string length. */
    Tcl_DString *dsPtr;         /* Uninitialized or free DString in which 
                                 * the converted string is stored. */
{
    return Tcl_ExternalToUtfDString(tclWinTCharEncoding, 
            (CONST char *) string, len, dsPtr);
}


/* $History: tclwin32dll.c $
 * 
 * *****************  Version 1  *****************
 * User: Dtashley     Date: 1/02/01    Time: 12:51a
 * Created in $/IjuScripter, IjuConsole/Source/Tcl Base
 * Initial check-in.
 */ 

/* End of TCLWIN32DLL.C */
1	dashley	25	/* $Header: /cvsroot/esrg/sfesrg/esrgpcpj/shared/tcl_base/tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $ */
2
3			/*
4			* tclWin32Dll.c --
5			*
6			* This file contains the DLL entry point.
7			*
8			* Copyright (c) 1995-1996 Sun Microsystems, Inc.
9			* Copyright (c) 1998-2000 Scriptics Corporation.
10			*
11			* See the file "license.terms" for information on usage and redistribution
12			* of this file, and for a DISCLAIMER OF ALL WARRANTIES.
13			*
14			* RCS: @(#) $Id: tclwin32dll.c,v 1.1.1.1 2001/06/13 04:48:12 dtashley Exp $
15			*/
16
17			#include "tclWinInt.h"
18
19			/*
20			* The following data structures are used when loading the thunking
21			* library for execing child processes under Win32s.
22			*/
23
24			typedef DWORD (WINAPI UT32PROC)(LPVOID lpBuff, DWORD dwUserDefined,
25			LPVOID *lpTranslationList);
26
27			typedef BOOL (WINAPI UTREGISTER)(HANDLE hModule, LPCSTR SixteenBitDLL,
28			LPCSTR InitName, LPCSTR ProcName, UT32PROC **ThirtyTwoBitThunk,
29			FARPROC UT32Callback, LPVOID Buff);
30
31			typedef VOID (WINAPI UTUNREGISTER)(HANDLE hModule);
32
33			/*
34			* The following variables keep track of information about this DLL
35			* on a per-instance basis. Each time this DLL is loaded, it gets its own
36			* new data segment with its own copy of all static and global information.
37			*/
38
39			static HINSTANCE hInstance; /* HINSTANCE of this DLL. */
40			static int platformId; /* Running under NT, or 95/98? */
41
42			/*
43			* The following function tables are used to dispatch to either the
44			* wide-character or multi-byte versions of the operating system calls,
45			* depending on whether the Unicode calls are available.
46			*/
47
48			static TclWinProcs asciiProcs = {
49			0,
50
51			(BOOL (WINAPI )(CONST TCHAR , LPDCB)) BuildCommDCBA,
52			(TCHAR (WINAPI )(TCHAR *)) CharLowerA,
53			(BOOL (WINAPI )(CONST TCHAR , CONST TCHAR *, BOOL)) CopyFileA,
54			(BOOL (WINAPI )(CONST TCHAR , LPSECURITY_ATTRIBUTES)) CreateDirectoryA,
55			(HANDLE (WINAPI )(CONST TCHAR , DWORD, DWORD, SECURITY_ATTRIBUTES *,
56			DWORD, DWORD, HANDLE)) CreateFileA,
57			(BOOL (WINAPI )(CONST TCHAR , TCHAR *, LPSECURITY_ATTRIBUTES,
58			LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *,
59			LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessA,
60			(BOOL (WINAPI )(CONST TCHAR )) DeleteFileA,
61			(HANDLE (WINAPI )(CONST TCHAR , WIN32_FIND_DATAT *)) FindFirstFileA,
62			(BOOL (WINAPI )(HANDLE, WIN32_FIND_DATAT )) FindNextFileA,
63			(BOOL (WINAPI )(WCHAR , LPDWORD)) GetComputerNameA,
64			(DWORD (WINAPI )(DWORD, WCHAR )) GetCurrentDirectoryA,
65			(DWORD (WINAPI )(CONST TCHAR )) GetFileAttributesA,
66			(DWORD (WINAPI )(CONST TCHAR , DWORD nBufferLength, WCHAR *,
67			TCHAR **)) GetFullPathNameA,
68			(DWORD (WINAPI )(HMODULE, WCHAR , int)) GetModuleFileNameA,
69			(DWORD (WINAPI )(CONST TCHAR , WCHAR *, DWORD)) GetShortPathNameA,
70			(UINT (WINAPI )(CONST TCHAR , CONST TCHAR *, UINT uUnique,
71			WCHAR *)) GetTempFileNameA,
72			(DWORD (WINAPI )(DWORD, WCHAR )) GetTempPathA,
73			(BOOL (WINAPI )(CONST TCHAR , WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD,
74			WCHAR *, DWORD)) GetVolumeInformationA,
75			(HINSTANCE (WINAPI )(CONST TCHAR )) LoadLibraryA,
76			(TCHAR (WINAPI )(WCHAR , CONST TCHAR *)) lstrcpyA,
77			(BOOL (WINAPI )(CONST TCHAR , CONST TCHAR *)) MoveFileA,
78			(BOOL (WINAPI )(CONST TCHAR )) RemoveDirectoryA,
79			(DWORD (WINAPI )(CONST TCHAR , CONST TCHAR , CONST TCHAR , DWORD,
80			WCHAR , TCHAR *)) SearchPathA,
81			(BOOL (WINAPI )(CONST TCHAR )) SetCurrentDirectoryA,
82			(BOOL (WINAPI )(CONST TCHAR , DWORD)) SetFileAttributesA,
83			};
84
85			static TclWinProcs unicodeProcs = {
86			1,
87
88			(BOOL (WINAPI )(CONST TCHAR , LPDCB)) BuildCommDCBW,
89			(TCHAR (WINAPI )(TCHAR *)) CharLowerW,
90			(BOOL (WINAPI )(CONST TCHAR , CONST TCHAR *, BOOL)) CopyFileW,
91			(BOOL (WINAPI )(CONST TCHAR , LPSECURITY_ATTRIBUTES)) CreateDirectoryW,
92			(HANDLE (WINAPI )(CONST TCHAR , DWORD, DWORD, SECURITY_ATTRIBUTES *,
93			DWORD, DWORD, HANDLE)) CreateFileW,
94			(BOOL (WINAPI )(CONST TCHAR , TCHAR *, LPSECURITY_ATTRIBUTES,
95			LPSECURITY_ATTRIBUTES, BOOL, DWORD, LPVOID, CONST TCHAR *,
96			LPSTARTUPINFOA, LPPROCESS_INFORMATION)) CreateProcessW,
97			(BOOL (WINAPI )(CONST TCHAR )) DeleteFileW,
98			(HANDLE (WINAPI )(CONST TCHAR , WIN32_FIND_DATAT *)) FindFirstFileW,
99			(BOOL (WINAPI )(HANDLE, WIN32_FIND_DATAT )) FindNextFileW,
100			(BOOL (WINAPI )(WCHAR , LPDWORD)) GetComputerNameW,
101			(DWORD (WINAPI )(DWORD, WCHAR )) GetCurrentDirectoryW,
102			(DWORD (WINAPI )(CONST TCHAR )) GetFileAttributesW,
103			(DWORD (WINAPI )(CONST TCHAR , DWORD nBufferLength, WCHAR *,
104			TCHAR **)) GetFullPathNameW,
105			(DWORD (WINAPI )(HMODULE, WCHAR , int)) GetModuleFileNameW,
106			(DWORD (WINAPI )(CONST TCHAR , WCHAR *, DWORD)) GetShortPathNameW,
107			(UINT (WINAPI )(CONST TCHAR , CONST TCHAR *, UINT uUnique,
108			WCHAR *)) GetTempFileNameW,
109			(DWORD (WINAPI )(DWORD, WCHAR )) GetTempPathW,
110			(BOOL (WINAPI )(CONST TCHAR , WCHAR *, DWORD, LPDWORD, LPDWORD, LPDWORD,
111			WCHAR *, DWORD)) GetVolumeInformationW,
112			(HINSTANCE (WINAPI )(CONST TCHAR )) LoadLibraryW,
113			(TCHAR (WINAPI )(WCHAR , CONST TCHAR *)) lstrcpyW,
114			(BOOL (WINAPI )(CONST TCHAR , CONST TCHAR *)) MoveFileW,
115			(BOOL (WINAPI )(CONST TCHAR )) RemoveDirectoryW,
116			(DWORD (WINAPI )(CONST TCHAR , CONST TCHAR , CONST TCHAR , DWORD,
117			WCHAR , TCHAR *)) SearchPathW,
118			(BOOL (WINAPI )(CONST TCHAR )) SetCurrentDirectoryW,
119			(BOOL (WINAPI )(CONST TCHAR , DWORD)) SetFileAttributesW,
120			};
121
122			TclWinProcs *tclWinProcs;
123			static Tcl_Encoding tclWinTCharEncoding;
124
125			/*
126			* The following declaration is for the VC++ DLL entry point.
127			*/
128
129			BOOL APIENTRY DllMain(HINSTANCE hInst, DWORD reason,
130			LPVOID reserved);
131
132
133			#ifdef __WIN32__
134			#ifndef STATIC_BUILD
135
136
137			/*
138			*----------------------------------------------------------------------
139			*
140			* DllEntryPoint --
141			*
142			* This wrapper function is used by Borland to invoke the
143			* initialization code for Tcl. It simply calls the DllMain
144			* routine.
145			*
146			* Results:
147			* See DllMain.
148			*
149			* Side effects:
150			* See DllMain.
151			*
152			*----------------------------------------------------------------------
153			*/
154
155			BOOL APIENTRY
156			DllEntryPoint(hInst, reason, reserved)
157			HINSTANCE hInst; /* Library instance handle. */
158			DWORD reason; /* Reason this function is being called. */
159			LPVOID reserved; /* Not used. */
160			{
161			return DllMain(hInst, reason, reserved);
162			}
163
164			/*
165			*----------------------------------------------------------------------
166			*
167			* DllMain --
168			*
169			* This routine is called by the VC++ C run time library init
170			* code, or the DllEntryPoint routine. It is responsible for
171			* initializing various dynamically loaded libraries.
172			*
173			* Results:
174			* TRUE on sucess, FALSE on failure.
175			*
176			* Side effects:
177			* Establishes 32-to-16 bit thunk and initializes sockets library.
178			*
179			*----------------------------------------------------------------------
180			*/
181			BOOL APIENTRY
182			DllMain(hInst, reason, reserved)
183			HINSTANCE hInst; /* Library instance handle. */
184			DWORD reason; /* Reason this function is being called. */
185			LPVOID reserved; /* Not used. */
186			{
187			switch (reason) {
188			case DLL_PROCESS_ATTACH:
189			TclWinInit(hInst);
190			return TRUE;
191
192			case DLL_PROCESS_DETACH:
193			if (hInst == hInstance) {
194			Tcl_Finalize();
195			}
196			break;
197			}
198
199			return TRUE;
200			}
201
202			#endif /* !STATIC_BUILD */
203			#endif /* __WIN32__ */
204
205			/*
206			*----------------------------------------------------------------------
207			*
208			* TclWinGetTclInstance --
209			*
210			* Retrieves the global library instance handle.
211			*
212			* Results:
213			* Returns the global library instance handle.
214			*
215			* Side effects:
216			* None.
217			*
218			*----------------------------------------------------------------------
219			*/
220
221			HINSTANCE
222			TclWinGetTclInstance()
223			{
224			return hInstance;
225			}
226
227			/*
228			*----------------------------------------------------------------------
229			*
230			* TclWinInit --
231			*
232			* This function initializes the internal state of the tcl library.
233			*
234			* Results:
235			* None.
236			*
237			* Side effects:
238			* Initializes the tclPlatformId variable.
239			*
240			*----------------------------------------------------------------------
241			*/
242
243			void
244			TclWinInit(hInst)
245			HINSTANCE hInst; /* Library instance handle. */
246			{
247			OSVERSIONINFO os;
248
249			hInstance = hInst;
250			os.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
251			GetVersionEx(&os);
252			platformId = os.dwPlatformId;
253
254			/*
255			* We no longer support Win32s, so just in case someone manages to
256			* get a runtime there, make sure they know that.
257			*/
258
259			if (platformId == VER_PLATFORM_WIN32s) {
260			panic("Win32s is not a supported platform");
261			}
262
263			tclWinProcs = &asciiProcs;
264			}
265
266			/*
267			*----------------------------------------------------------------------
268			*
269			* TclWinGetPlatformId --
270			*
271			* Determines whether running under NT, 95, or Win32s, to allow
272			* runtime conditional code.
273			*
274			* Results:
275			* The return value is one of:
276			* VER_PLATFORM_WIN32s Win32s on Windows 3.1. (not supported)
277			* VER_PLATFORM_WIN32_WINDOWS Win32 on Windows 95.
278			* VER_PLATFORM_WIN32_NT Win32 on Windows NT
279			*
280			* Side effects:
281			* None.
282			*
283			*----------------------------------------------------------------------
284			*/
285
286			int
287			TclWinGetPlatformId()
288			{
289			return platformId;
290			}
291
292			/*
293			*-------------------------------------------------------------------------
294			*
295			* TclWinNoBackslash --
296			*
297			* We're always iterating through a string in Windows, changing the
298			* backslashes to slashes for use in Tcl.
299			*
300			* Results:
301			* All backslashes in given string are changed to slashes.
302			*
303			* Side effects:
304			* None.
305			*
306			*-------------------------------------------------------------------------
307			*/
308
309			char *
310			TclWinNoBackslash(
311			char path) / String to change. */
312			{
313			char *p;
314
315			for (p = path; *p != '\0'; p++) {
316			if (*p == '\\') {
317			*p = '/';
318			}
319			}
320			return path;
321			}
322
323			/*
324			*----------------------------------------------------------------------
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.
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			*/
339
340			int
341			TclpCheckStackSpace()
342			{
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
350			__try {
351			alloca(TCL_WIN_STACK_THRESHOLD);
352			return 1;
353			} __except (1) {}
354
355			return 0;
356			}
357
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 */