[p5sagit/p5-mst-13.2.git] / win32 / vdir.h

/* vdir.h
 *
 * (c) 1999 Microsoft Corporation. All rights reserved. 
 * Portions (c) 1999 ActiveState Tool Corp, http://www.ActiveState.com/
 *
 *    You may distribute under the terms of either the GNU General Public
 *    License or the Artistic License, as specified in the README file.
 */

#ifndef ___VDir_H___
#define ___VDir_H___

/*
 * Allow one slot for each possible drive letter
 * and one additional slot for a UNC name
 */
const int driveCount = ('Z'-'A')+1+1;

class VDir
{
public:
    VDir(int bManageDir = 1);
    ~VDir() {};

    void Init(VDir* pDir, VMem *pMem);
    void SetDefaultA(char const *pDefault);
    void SetDefaultW(WCHAR const *pDefault);
    char* MapPathA(const char *pInName);
    WCHAR* MapPathW(const WCHAR *pInName);
    int SetCurrentDirectoryA(char *lpBuffer);
    int SetCurrentDirectoryW(WCHAR *lpBuffer);
    inline int GetDefault(void) { return nDefault; };

    inline char* GetCurrentDirectoryA(int dwBufSize, char *lpBuffer)
    {
	char* ptr = dirTableA[nDefault];
	while (--dwBufSize)
	{
	    if ((*lpBuffer++ = *ptr++) == '\0')
		break;
	}
        *lpBuffer = '\0';
	return /* unused */ NULL;
    };
    inline WCHAR* GetCurrentDirectoryW(int dwBufSize, WCHAR *lpBuffer)
    {
	WCHAR* ptr = dirTableW[nDefault];
	while (--dwBufSize)
	{
	    if ((*lpBuffer++ = *ptr++) == '\0')
		break;
	}
        *lpBuffer = '\0';
	return /* unused */ NULL;
    };

    DWORD CalculateEnvironmentSpace(void);
    LPSTR BuildEnvironmentSpace(LPSTR lpStr);

protected:
    int SetDirA(char const *pPath, int index);
    int SetDirW(WCHAR const *pPath, int index);
    void FromEnvA(char *pEnv, int index);
    void FromEnvW(WCHAR *pEnv, int index);

    inline const char *GetDefaultDirA(void)
    {
	return dirTableA[nDefault];
    };
    inline void SetDefaultDirA(char const *pPath, int index)
    {
	SetDirA(pPath, index);
	nDefault = index;
    };
    inline const WCHAR *GetDefaultDirW(void)
    {
	return dirTableW[nDefault];
    };
    inline void SetDefaultDirW(WCHAR const *pPath, int index)
    {
	SetDirW(pPath, index);
	nDefault = index;
    };
    inline const char *GetDirA(int index)
    {
	char *ptr = dirTableA[index];
	if (!ptr) {
	    /* simulate the existance of this drive */
	    ptr = szLocalBufferA;
	    ptr[0] = 'A' + index;
	    ptr[1] = ':';
	    ptr[2] = '\\';
	    ptr[3] = 0;
	}
	return ptr;
    };
    inline const WCHAR *GetDirW(int index)
    {
	WCHAR *ptr = dirTableW[index];
	if (!ptr) {
	    /* simulate the existance of this drive */
	    ptr = szLocalBufferW;
	    ptr[0] = 'A' + index;
	    ptr[1] = ':';
	    ptr[2] = '\\';
	    ptr[3] = 0;
	}
	return ptr;
    };

    inline int DriveIndex(char chr)
    {
	if (chr == '\\' || chr == '/')
	    return ('Z'-'A')+1;
	return (chr | 0x20)-'a';
    };

    VMem *pMem;
    int nDefault, bManageDirectory;
    char *dirTableA[driveCount];
    char szLocalBufferA[MAX_PATH+1];
    WCHAR *dirTableW[driveCount];
    WCHAR szLocalBufferW[MAX_PATH+1];
};


VDir::VDir(int bManageDir /* = 1 */)
{
    nDefault = 0;
    bManageDirectory = bManageDir;
    memset(dirTableA, 0, sizeof(dirTableA));
    memset(dirTableW, 0, sizeof(dirTableW));
}

void VDir::Init(VDir* pDir, VMem *p)
{
    int index;

    pMem = p;
    if (pDir) {
	for (index = 0; index < driveCount; ++index) {
	    SetDirW(pDir->GetDirW(index), index);
	}
	nDefault = pDir->GetDefault();
    }
    else {
	int bSave = bManageDirectory;
	DWORD driveBits = GetLogicalDrives();
        OSVERSIONINFO osver;

        memset(&osver, 0, sizeof(osver));
        osver.dwOSVersionInfoSize = sizeof(osver);
        GetVersionEx(&osver);

	bManageDirectory = 0;
        if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
            char szBuffer[MAX_PATH*driveCount];
            if (GetLogicalDriveStringsA(sizeof(szBuffer), szBuffer)) {
                char* pEnv = (char*)GetEnvironmentStringsA();
                char* ptr = szBuffer;
                for (index = 0; index < driveCount; ++index) {
                    if (driveBits & (1<<index)) {
                        ptr += SetDirA(ptr, index) + 1;
                        FromEnvA(pEnv, index);
                    }
                }
                FreeEnvironmentStringsA(pEnv);
            }
            SetDefaultA(".");
        }
        else { /* Windows NT or later */
            WCHAR szBuffer[MAX_PATH*driveCount];
            if (GetLogicalDriveStringsW(sizeof(szBuffer), szBuffer)) {
                WCHAR* pEnv = GetEnvironmentStringsW();
                WCHAR* ptr = szBuffer;
                for (index = 0; index < driveCount; ++index) {
                    if (driveBits & (1<<index)) {
                        ptr += SetDirW(ptr, index) + 1;
                        FromEnvW(pEnv, index);
                    }
                }
                FreeEnvironmentStringsW(pEnv);
            }
            SetDefaultW(L".");
        }
	bManageDirectory = bSave;
  }
}

int VDir::SetDirA(char const *pPath, int index)
{
    char chr, *ptr;
    int length = 0;
    WCHAR wBuffer[MAX_PATH+1];
    if (index < driveCount && pPath != NULL) {
	length = strlen(pPath);
	pMem->Free(dirTableA[index]);
	ptr = dirTableA[index] = (char*)pMem->Malloc(length+2);
	if (ptr != NULL) {
	    strcpy(ptr, pPath);
	    ptr += length-1;
	    chr = *ptr++;
	    if (chr != '\\' && chr != '/') {
		*ptr++ = '\\';
		*ptr = '\0';
	    }
	    MultiByteToWideChar(CP_ACP, 0, dirTableA[index], -1,
		    wBuffer, (sizeof(wBuffer)/sizeof(WCHAR)));
	    length = wcslen(wBuffer);
	    pMem->Free(dirTableW[index]);
	    dirTableW[index] = (WCHAR*)pMem->Malloc((length+1)*2);
	    if (dirTableW[index] != NULL) {
		wcscpy(dirTableW[index], wBuffer);
	    }
	}
    }

    if(bManageDirectory)
	::SetCurrentDirectoryA(pPath);

    return length;
}

void VDir::FromEnvA(char *pEnv, int index)
{   /* gets the directory for index from the environment variable. */
    while (*pEnv != '\0') {
	if ((pEnv[0] == '=') && (DriveIndex(pEnv[1]) == index)) {
	    SetDirA(&pEnv[4], index);
	    break;
	}
	else
	    pEnv += strlen(pEnv)+1;
    }
}

void VDir::FromEnvW(WCHAR *pEnv, int index)
{   /* gets the directory for index from the environment variable. */
    while (*pEnv != '\0') {
	if ((pEnv[0] == '=') && (DriveIndex((char)pEnv[1]) == index)) {
	    SetDirW(&pEnv[4], index);
	    break;
	}
	else
	    pEnv += wcslen(pEnv)+1;
    }
}

void VDir::SetDefaultA(char const *pDefault)
{
    char szBuffer[MAX_PATH+1];
    char *pPtr;

    if (GetFullPathNameA(pDefault, sizeof(szBuffer), szBuffer, &pPtr)) {
        if (*pDefault != '.' && pPtr != NULL)
	    *pPtr = '\0';

	SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
    }
}

int VDir::SetDirW(WCHAR const *pPath, int index)
{
    WCHAR chr, *ptr;
    char szBuffer[MAX_PATH+1];
    int length = 0;
    if (index < driveCount && pPath != NULL) {
	length = wcslen(pPath);
	pMem->Free(dirTableW[index]);
	ptr = dirTableW[index] = (WCHAR*)pMem->Malloc((length+2)*2);
	if (ptr != NULL) {
	    wcscpy(ptr, pPath);
	    ptr += length-1;
	    chr = *ptr++;
	    if (chr != '\\' && chr != '/') {
		*ptr++ = '\\';
		*ptr = '\0';
	    }
	    WideCharToMultiByte(CP_ACP, 0, dirTableW[index], -1, szBuffer, sizeof(szBuffer), NULL, NULL);
	    length = strlen(szBuffer);
	    pMem->Free(dirTableA[index]);
	    dirTableA[index] = (char*)pMem->Malloc(length+1);
	    if (dirTableA[index] != NULL) {
		strcpy(dirTableA[index], szBuffer);
	    }
	}
    }

    if(bManageDirectory)
	::SetCurrentDirectoryW(pPath);

    return length;
}

void VDir::SetDefaultW(WCHAR const *pDefault)
{
    WCHAR szBuffer[MAX_PATH+1];
    WCHAR *pPtr;

    if (GetFullPathNameW(pDefault, (sizeof(szBuffer)/sizeof(WCHAR)), szBuffer, &pPtr)) {
        if (*pDefault != '.' && pPtr != NULL)
	    *pPtr = '\0';

	SetDefaultDirW(szBuffer, DriveIndex((char)szBuffer[0]));
    }
}

inline BOOL IsPathSep(char ch)
{
    return (ch == '\\' || ch == '/');
}

inline void DoGetFullPathNameA(char* lpBuffer, DWORD dwSize, char* Dest)
{
    char *pPtr;

    /*
     * On WinNT GetFullPathName does not fail, (or at least always
     * succeeds when the drive is valid) WinNT does set *Dest to Nullch
     * On Win98 GetFullPathName will set last error if it fails, but
     * does not touch *Dest
     */
    *Dest = '\0';
    GetFullPathNameA(lpBuffer, dwSize, Dest, &pPtr);
}

inline bool IsSpecialFileName(const char* pName)
{
    /* specical file names are devices that the system can open
     * these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
     * (x is a single digit, and names are case-insensitive)
     */
    char ch = (pName[0] & ~0x20);
    switch (ch)
    {
	case 'A': /* AUX */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'X')
		&& !pName[3])
		    return true;
	    break;
	case 'C': /* CLOCK$, COMx,  CON, CONIN$ CONOUT$ */
	    ch = (pName[1] & ~0x20);
	    switch (ch)
	    {
		case 'L': /* CLOCK$ */
		    if (((pName[2] & ~0x20) == 'O')
			&& ((pName[3] & ~0x20) == 'C')
			&& ((pName[4] & ~0x20) == 'K')
			&& (pName[5] == '$')
			&& !pName[6])
			    return true;
		    break;
		case 'O': /* COMx,  CON, CONIN$ CONOUT$ */
		    if ((pName[2] & ~0x20) == 'M') {
			if ((pName[3] >= '1') && (pName[3] <= '9')
			    && !pName[4])
			    return true;
		    }
		    else if ((pName[2] & ~0x20) == 'N') {
			if (!pName[3])
			    return true;
			else if ((pName[3] & ~0x20) == 'I') {
			    if (((pName[4] & ~0x20) == 'N')
				&& (pName[5] == '$')
				&& !pName[6])
			    return true;
			}
			else if ((pName[3] & ~0x20) == 'O') {
			    if (((pName[4] & ~0x20) == 'U')
				&& ((pName[5] & ~0x20) == 'T')
				&& (pName[6] == '$')
				&& !pName[7])
			    return true;
			}
		    }
		    break;
	    }
	    break;
	case 'L': /* LPTx */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'X')
		&& (pName[3] >= '1') && (pName[3] <= '9')
		&& !pName[4])
		    return true;
	    break;
	case 'N': /* NUL */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'L')
		&& !pName[3])
		    return true;
	    break;
	case 'P': /* PRN */
	    if (((pName[1] & ~0x20) == 'R')
		&& ((pName[2] & ~0x20) == 'N')
		&& !pName[3])
		    return true;
	    break;
    }
    return false;
}

char *VDir::MapPathA(const char *pInName)
{   /*
     * possiblities -- relative path or absolute path with or without drive letter
     * OR UNC name
     */
    char szBuffer[(MAX_PATH+1)*2];
    char szlBuf[MAX_PATH+1];
    int length = strlen(pInName);

    if (!length)
	return (char*)pInName;

    if (length > MAX_PATH) {
	strncpy(szlBuf, pInName, MAX_PATH);
	if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) {   
	    /* absolute path - reduce length by 2 for drive specifier */
	    szlBuf[MAX_PATH-2] = '\0';
	}
	else
	    szlBuf[MAX_PATH] = '\0';
	pInName = szlBuf;
    }
    /* strlen(pInName) is now <= MAX_PATH */

    if (pInName[1] == ':') {
	/* has drive letter */
	if (IsPathSep(pInName[2])) {
	    /* absolute with drive letter */
	    DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA);
	}
	else {
	    /* relative path with drive letter */
	    strcpy(szBuffer, GetDirA(DriveIndex(*pInName)));
	    strcat(szBuffer, &pInName[2]);
	    if(strlen(szBuffer) > MAX_PATH)
		szBuffer[MAX_PATH] = '\0';

	    DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
	}
    }
    else {
	/* no drive letter */
	if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) {
	    /* UNC name */
	    DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA);
	}
	else {
	    strcpy(szBuffer, GetDefaultDirA());
	    if (IsPathSep(pInName[0])) {
		/* absolute path */
		strcpy(&szBuffer[2], pInName);
		DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
	    }
	    else {
		/* relative path */
		if (IsSpecialFileName(pInName)) {
		    return (char*)pInName;
		}
		else {
		    strcat(szBuffer, pInName);
		    if (strlen(szBuffer) > MAX_PATH)
			szBuffer[MAX_PATH] = '\0';

		    DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
		}
	    }
	}
    }

    return szLocalBufferA;
}

int VDir::SetCurrentDirectoryA(char *lpBuffer)
{
    char *pPtr;
    int length, nRet = -1;

    pPtr = MapPathA(lpBuffer);
    length = strlen(pPtr);
    if(length > 3 && IsPathSep(pPtr[length-1])) {
	/* don't remove the trailing slash from 'x:\'  */
	pPtr[length-1] = '\0';
    }

    DWORD r = GetFileAttributesA(pPtr);
    if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY))
    {
	char szBuffer[(MAX_PATH+1)*2];
	DoGetFullPathNameA(pPtr, sizeof(szBuffer), szBuffer);
	SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
	nRet = 0;
    }

    return nRet;
}

DWORD VDir::CalculateEnvironmentSpace(void)
{   /* the current directory environment strings are stored as '=D:=d:\path' */
    int index;
    DWORD dwSize = 0;
    for (index = 0; index < driveCount; ++index) {
	if (dirTableA[index] != NULL) {
	    dwSize += strlen(dirTableA[index]) + 5;  /* add 1 for trailing NULL and 4 for '=D:=' */
	}
    }
    return dwSize;
}

LPSTR VDir::BuildEnvironmentSpace(LPSTR lpStr)
{   /* store the current directory environment strings as '=D:=d:\path' */
    int index, length;
    LPSTR lpDirStr;
    for (index = 0; index < driveCount; ++index) {
	lpDirStr = dirTableA[index];
	if (lpDirStr != NULL) {
	    lpStr[0] = '=';
	    lpStr[1] = lpDirStr[0];
	    lpStr[2] = '\0';
	    CharUpper(&lpStr[1]);
	    lpStr[2] = ':';
	    lpStr[3] = '=';
	    strcpy(&lpStr[4], lpDirStr);
	    length = strlen(lpDirStr);
	    lpStr += length + 5; /* add 1 for trailing NULL and 4 for '=D:=' */
	    if (length > 3 && IsPathSep(lpStr[-2])) {
		lpStr[-2] = '\0';   /* remove the trailing path separator */
		--lpStr;
	    }
	}
    }
    return lpStr;
}

inline BOOL IsPathSep(WCHAR ch)
{
    return (ch == '\\' || ch == '/');
}

inline void DoGetFullPathNameW(WCHAR* lpBuffer, DWORD dwSize, WCHAR* Dest)
{
    WCHAR *pPtr;

    /*
     * On WinNT GetFullPathName does not fail, (or at least always
     * succeeds when the drive is valid) WinNT does set *Dest to Nullch
     * On Win98 GetFullPathName will set last error if it fails, but
     * does not touch *Dest
     */
    *Dest = '\0';
    GetFullPathNameW(lpBuffer, dwSize, Dest, &pPtr);
}

inline bool IsSpecialFileName(const WCHAR* pName)
{
    /* specical file names are devices that the system can open
     * these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
     * (x is a single digit, and names are case-insensitive)
     */
    WCHAR ch = (pName[0] & ~0x20);
    switch (ch)
    {
	case 'A': /* AUX */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'X')
		&& !pName[3])
		    return true;
	    break;
	case 'C': /* CLOCK$, COMx,  CON, CONIN$ CONOUT$ */
	    ch = (pName[1] & ~0x20);
	    switch (ch)
	    {
		case 'L': /* CLOCK$ */
		    if (((pName[2] & ~0x20) == 'O')
			&& ((pName[3] & ~0x20) == 'C')
			&& ((pName[4] & ~0x20) == 'K')
			&& (pName[5] == '$')
			&& !pName[6])
			    return true;
		    break;
		case 'O': /* COMx,  CON, CONIN$ CONOUT$ */
		    if ((pName[2] & ~0x20) == 'M') {
			if ((pName[3] >= '1') && (pName[3] <= '9')
			    && !pName[4])
			    return true;
		    }
		    else if ((pName[2] & ~0x20) == 'N') {
			if (!pName[3])
			    return true;
			else if ((pName[3] & ~0x20) == 'I') {
			    if (((pName[4] & ~0x20) == 'N')
				&& (pName[5] == '$')
				&& !pName[6])
			    return true;
			}
			else if ((pName[3] & ~0x20) == 'O') {
			    if (((pName[4] & ~0x20) == 'U')
				&& ((pName[5] & ~0x20) == 'T')
				&& (pName[6] == '$')
				&& !pName[7])
			    return true;
			}
		    }
		    break;
	    }
	    break;
	case 'L': /* LPTx */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'X')
		&& (pName[3] >= '1') && (pName[3] <= '9')
		&& !pName[4])
		    return true;
	    break;
	case 'N': /* NUL */
	    if (((pName[1] & ~0x20) == 'U')
		&& ((pName[2] & ~0x20) == 'L')
		&& !pName[3])
		    return true;
	    break;
	case 'P': /* PRN */
	    if (((pName[1] & ~0x20) == 'R')
		&& ((pName[2] & ~0x20) == 'N')
		&& !pName[3])
		    return true;
	    break;
    }
    return false;
}

WCHAR* VDir::MapPathW(const WCHAR *pInName)
{   /*
     * possiblities -- relative path or absolute path with or without drive letter
     * OR UNC name
     */
    WCHAR szBuffer[(MAX_PATH+1)*2];
    WCHAR szlBuf[MAX_PATH+1];
    int length = wcslen(pInName);

    if (!length)
	return (WCHAR*)pInName;

    if (length > MAX_PATH) {
	wcsncpy(szlBuf, pInName, MAX_PATH);
	if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) {   
	    /* absolute path - reduce length by 2 for drive specifier */
	    szlBuf[MAX_PATH-2] = '\0';
	}
	else
	    szlBuf[MAX_PATH] = '\0';
	pInName = szlBuf;
    }
    /* strlen(pInName) is now <= MAX_PATH */

    if (pInName[1] == ':') {
	/* has drive letter */
	if (IsPathSep(pInName[2])) {
	    /* absolute with drive letter */
	    DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
	}
	else {
	    /* relative path with drive letter */
	    wcscpy(szBuffer, GetDirW(DriveIndex((char)*pInName)));
	    wcscat(szBuffer, &pInName[2]);
	    if(wcslen(szBuffer) > MAX_PATH)
		szBuffer[MAX_PATH] = '\0';

	    DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
	}
    }
    else {
	/* no drive letter */
	if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) {
	    /* UNC name */
	    DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
	}
	else {
	    wcscpy(szBuffer, GetDefaultDirW());
	    if (IsPathSep(pInName[0])) {
		/* absolute path */
		wcscpy(&szBuffer[2], pInName);
		DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
	    }
	    else {
		/* relative path */
		if (IsSpecialFileName(pInName)) {
		    return (WCHAR*)pInName;
		}
		else {
		    wcscat(szBuffer, pInName);
		    if (wcslen(szBuffer) > MAX_PATH)
			szBuffer[MAX_PATH] = '\0';

		    DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
		}
	    }
	}
    }
    return szLocalBufferW;
}

int VDir::SetCurrentDirectoryW(WCHAR *lpBuffer)
{
    WCHAR *pPtr;
    int length, nRet = -1;

    pPtr = MapPathW(lpBuffer);
    length = wcslen(pPtr);
    if(length > 3 && IsPathSep(pPtr[length-1])) {
	/* don't remove the trailing slash from 'x:\'  */
	pPtr[length-1] = '\0';
    }

    DWORD r = GetFileAttributesW(pPtr);
    if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY))
    {
	WCHAR wBuffer[(MAX_PATH+1)*2];
	DoGetFullPathNameW(pPtr, (sizeof(wBuffer)/sizeof(WCHAR)), wBuffer);
	SetDefaultDirW(wBuffer, DriveIndex((char)wBuffer[0]));
	nRet = 0;
    }

    return nRet;
}

#endif	/* ___VDir_H___ */
Commit	Line	Data
7766f137	1	/* vdir.h
	2	*
	3	* (c) 1999 Microsoft Corporation. All rights reserved.
	4	* Portions (c) 1999 ActiveState Tool Corp, http://www.ActiveState.com/
	5	*
	6	* You may distribute under the terms of either the GNU General Public
	7	* License or the Artistic License, as specified in the README file.
	8	*/
	9
	10	#ifndef ___VDir_H___
	11	#define ___VDir_H___
	12
93153446	13	/*
	14	* Allow one slot for each possible drive letter
	15	* and one additional slot for a UNC name
	16	*/
	17	const int driveCount = ('Z'-'A')+1+1;
7766f137	18
	19	class VDir
	20	{
	21	public:
f7aeb604	22	VDir(int bManageDir = 1);
7766f137	23	~VDir() {};
	24
	25	void Init(VDir* pDir, VMem *pMem);
	26	void SetDefaultA(char const *pDefault);
	27	void SetDefaultW(WCHAR const *pDefault);
	28	char* MapPathA(const char *pInName);
	29	WCHAR* MapPathW(const WCHAR *pInName);
	30	int SetCurrentDirectoryA(char *lpBuffer);
	31	int SetCurrentDirectoryW(WCHAR *lpBuffer);
7766f137	32	inline int GetDefault(void) { return nDefault; };
	33
	34	inline char* GetCurrentDirectoryA(int dwBufSize, char *lpBuffer)
	35	{
	36	char* ptr = dirTableA[nDefault];
d684b162	37	while (--dwBufSize)
7766f137	38	{
	39	if ((lpBuffer++ = ptr++) == '\0')
	40	break;
	41	}
d684b162	42	*lpBuffer = '\0';
d684b162	43	return /* unused */ NULL;
7766f137	44	};
	45	inline WCHAR* GetCurrentDirectoryW(int dwBufSize, WCHAR *lpBuffer)
	46	{
	47	WCHAR* ptr = dirTableW[nDefault];
d684b162	48	while (--dwBufSize)
7766f137	49	{
	50	if ((lpBuffer++ = ptr++) == '\0')
	51	break;
	52	}
d684b162	53	*lpBuffer = '\0';
d684b162	54	return /* unused */ NULL;
7766f137	55	};
7766f137	56
7766f137	57	DWORD CalculateEnvironmentSpace(void);
	58	LPSTR BuildEnvironmentSpace(LPSTR lpStr);
	59
	60	protected:
	61	int SetDirA(char const *pPath, int index);
d684b162	62	int SetDirW(WCHAR const *pPath, int index);
7766f137	63	void FromEnvA(char *pEnv, int index);
d684b162	64	void FromEnvW(WCHAR *pEnv, int index);
d684b162	65
7766f137	66	inline const char *GetDefaultDirA(void)
	67	{
	68	return dirTableA[nDefault];
	69	};
7766f137	70	inline void SetDefaultDirA(char const *pPath, int index)
	71	{
	72	SetDirA(pPath, index);
	73	nDefault = index;
	74	};
7766f137	75	inline const WCHAR *GetDefaultDirW(void)
	76	{
	77	return dirTableW[nDefault];
	78	};
7766f137	79	inline void SetDefaultDirW(WCHAR const *pPath, int index)
	80	{
	81	SetDirW(pPath, index);
	82	nDefault = index;
	83	};
e2694c95	84	inline const char *GetDirA(int index)
	85	{
	86	char *ptr = dirTableA[index];
	87	if (!ptr) {
	88	/* simulate the existance of this drive */
	89	ptr = szLocalBufferA;
	90	ptr[0] = 'A' + index;
	91	ptr[1] = ':';
	92	ptr[2] = '\\';
	93	ptr[3] = 0;
	94	}
	95	return ptr;
	96	};
	97	inline const WCHAR *GetDirW(int index)
	98	{
	99	WCHAR *ptr = dirTableW[index];
	100	if (!ptr) {
	101	/* simulate the existance of this drive */
	102	ptr = szLocalBufferW;
	103	ptr[0] = 'A' + index;
	104	ptr[1] = ':';
	105	ptr[2] = '\\';
	106	ptr[3] = 0;
	107	}
	108	return ptr;
	109	};
7766f137	110
	111	inline int DriveIndex(char chr)
	112	{
93153446	113	if (chr == '\\' \|\| chr == '/')
93153446	114	return ('Z'-'A')+1;
7766f137	115	return (chr \| 0x20)-'a';
	116	};
	117
	118	VMem *pMem;
f7aeb604	119	int nDefault, bManageDirectory;
7766f137	120	char *dirTableA[driveCount];
	121	char szLocalBufferA[MAX_PATH+1];
	122	WCHAR *dirTableW[driveCount];
	123	WCHAR szLocalBufferW[MAX_PATH+1];
	124	};
	125
	126
f7aeb604	127	VDir::VDir(int bManageDir /* = 1 */)
7766f137	128	{
7766f137	129	nDefault = 0;
f7aeb604	130	bManageDirectory = bManageDir;
7766f137	131	memset(dirTableA, 0, sizeof(dirTableA));
	132	memset(dirTableW, 0, sizeof(dirTableW));
	133	}
	134
	135	void VDir::Init(VDir* pDir, VMem *p)
	136	{
	137	int index;
7766f137	138
	139	pMem = p;
	140	if (pDir) {
	141	for (index = 0; index < driveCount; ++index) {
	142	SetDirW(pDir->GetDirW(index), index);
	143	}
	144	nDefault = pDir->GetDefault();
	145	}
	146	else {
d684b162	147	int bSave = bManageDirectory;
	148	DWORD driveBits = GetLogicalDrives();
	149	OSVERSIONINFO osver;
	150
	151	memset(&osver, 0, sizeof(osver));
	152	osver.dwOSVersionInfoSize = sizeof(osver);
	153	GetVersionEx(&osver);
	154
f7aeb604	155	bManageDirectory = 0;
d684b162	156	if (osver.dwPlatformId == VER_PLATFORM_WIN32_WINDOWS) {
	157	char szBuffer[MAX_PATH*driveCount];
	158	if (GetLogicalDriveStringsA(sizeof(szBuffer), szBuffer)) {
	159	char* pEnv = (char*)GetEnvironmentStringsA();
	160	char* ptr = szBuffer;
	161	for (index = 0; index < driveCount; ++index) {
	162	if (driveBits & (1<<index)) {
	163	ptr += SetDirA(ptr, index) + 1;
	164	FromEnvA(pEnv, index);
	165	}
	166	}
	167	FreeEnvironmentStringsA(pEnv);
	168	}
	169	SetDefaultA(".");
	170	}
	171	else { /* Windows NT or later */
	172	WCHAR szBuffer[MAX_PATH*driveCount];
	173	if (GetLogicalDriveStringsW(sizeof(szBuffer), szBuffer)) {
	174	WCHAR* pEnv = GetEnvironmentStringsW();
	175	WCHAR* ptr = szBuffer;
	176	for (index = 0; index < driveCount; ++index) {
	177	if (driveBits & (1<<index)) {
	178	ptr += SetDirW(ptr, index) + 1;
	179	FromEnvW(pEnv, index);
	180	}
	181	}
	182	FreeEnvironmentStringsW(pEnv);
	183	}
	184	SetDefaultW(L".");
	185	}
	186	bManageDirectory = bSave;
	187	}
7766f137	188	}
	189
	190	int VDir::SetDirA(char const *pPath, int index)
	191	{
	192	char chr, *ptr;
	193	int length = 0;
	194	WCHAR wBuffer[MAX_PATH+1];
	195	if (index < driveCount && pPath != NULL) {
	196	length = strlen(pPath);
	197	pMem->Free(dirTableA[index]);
	198	ptr = dirTableA[index] = (char*)pMem->Malloc(length+2);
	199	if (ptr != NULL) {
	200	strcpy(ptr, pPath);
	201	ptr += length-1;
	202	chr = *ptr++;
	203	if (chr != '\\' && chr != '/') {
	204	*ptr++ = '\\';
	205	*ptr = '\0';
	206	}
	207	MultiByteToWideChar(CP_ACP, 0, dirTableA[index], -1,
	208	wBuffer, (sizeof(wBuffer)/sizeof(WCHAR)));
	209	length = wcslen(wBuffer);
	210	pMem->Free(dirTableW[index]);
	211	dirTableW[index] = (WCHAR)pMem->Malloc((length+1)2);
	212	if (dirTableW[index] != NULL) {
	213	wcscpy(dirTableW[index], wBuffer);
	214	}
	215	}
	216	}
f7aeb604	217
	218	if(bManageDirectory)
	219	::SetCurrentDirectoryA(pPath);
	220
7766f137	221	return length;
	222	}
	223
	224	void VDir::FromEnvA(char *pEnv, int index)
	225	{ /* gets the directory for index from the environment variable. */
	226	while (*pEnv != '\0') {
	227	if ((pEnv[0] == '=') && (DriveIndex(pEnv[1]) == index)) {
	228	SetDirA(&pEnv[4], index);
	229	break;
	230	}
	231	else
	232	pEnv += strlen(pEnv)+1;
	233	}
	234	}
	235
d684b162	236	void VDir::FromEnvW(WCHAR *pEnv, int index)
	237	{ /* gets the directory for index from the environment variable. */
	238	while (*pEnv != '\0') {
	239	if ((pEnv[0] == '=') && (DriveIndex((char)pEnv[1]) == index)) {
	240	SetDirW(&pEnv[4], index);
	241	break;
	242	}
	243	else
	244	pEnv += wcslen(pEnv)+1;
	245	}
	246	}
	247
7766f137	248	void VDir::SetDefaultA(char const *pDefault)
	249	{
	250	char szBuffer[MAX_PATH+1];
	251	char *pPtr;
	252
	253	if (GetFullPathNameA(pDefault, sizeof(szBuffer), szBuffer, &pPtr)) {
	254	if (*pDefault != '.' && pPtr != NULL)
	255	*pPtr = '\0';
	256
	257	SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
	258	}
	259	}
	260
	261	int VDir::SetDirW(WCHAR const *pPath, int index)
	262	{
	263	WCHAR chr, *ptr;
	264	char szBuffer[MAX_PATH+1];
	265	int length = 0;
	266	if (index < driveCount && pPath != NULL) {
	267	length = wcslen(pPath);
	268	pMem->Free(dirTableW[index]);
	269	ptr = dirTableW[index] = (WCHAR)pMem->Malloc((length+2)2);
	270	if (ptr != NULL) {
	271	wcscpy(ptr, pPath);
	272	ptr += length-1;
	273	chr = *ptr++;
	274	if (chr != '\\' && chr != '/') {
	275	*ptr++ = '\\';
	276	*ptr = '\0';
	277	}
	278	WideCharToMultiByte(CP_ACP, 0, dirTableW[index], -1, szBuffer, sizeof(szBuffer), NULL, NULL);
	279	length = strlen(szBuffer);
	280	pMem->Free(dirTableA[index]);
	281	dirTableA[index] = (char*)pMem->Malloc(length+1);
	282	if (dirTableA[index] != NULL) {
	283	strcpy(dirTableA[index], szBuffer);
	284	}
	285	}
	286	}
f7aeb604	287
	288	if(bManageDirectory)
	289	::SetCurrentDirectoryW(pPath);
	290
7766f137	291	return length;
	292	}
	293
	294	void VDir::SetDefaultW(WCHAR const *pDefault)
	295	{
	296	WCHAR szBuffer[MAX_PATH+1];
	297	WCHAR *pPtr;
	298
	299	if (GetFullPathNameW(pDefault, (sizeof(szBuffer)/sizeof(WCHAR)), szBuffer, &pPtr)) {
	300	if (*pDefault != '.' && pPtr != NULL)
	301	*pPtr = '\0';
	302
	303	SetDefaultDirW(szBuffer, DriveIndex((char)szBuffer[0]));
	304	}
	305	}
	306
	307	inline BOOL IsPathSep(char ch)
	308	{
	309	return (ch == '\\' \|\| ch == '/');
	310	}
	311
	312	inline void DoGetFullPathNameA(char* lpBuffer, DWORD dwSize, char* Dest)
	313	{
	314	char *pPtr;
	315
	316	/*
	317	* On WinNT GetFullPathName does not fail, (or at least always
	318	* succeeds when the drive is valid) WinNT does set *Dest to Nullch
	319	* On Win98 GetFullPathName will set last error if it fails, but
	320	* does not touch *Dest
	321	*/
	322	*Dest = '\0';
	323	GetFullPathNameA(lpBuffer, dwSize, Dest, &pPtr);
	324	}
	325
e2694c95	326	inline bool IsSpecialFileName(const char* pName)
	327	{
	328	/* specical file names are devices that the system can open
	329	* these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
	330	* (x is a single digit, and names are case-insensitive)
	331	*/
	332	char ch = (pName[0] & ~0x20);
	333	switch (ch)
	334	{
	335	case 'A': /* AUX */
	336	if (((pName[1] & ~0x20) == 'U')
	337	&& ((pName[2] & ~0x20) == 'X')
	338	&& !pName[3])
	339	return true;
	340	break;
	341	case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */
	342	ch = (pName[1] & ~0x20);
	343	switch (ch)
	344	{
	345	case 'L': /* CLOCK$ */
	346	if (((pName[2] & ~0x20) == 'O')
	347	&& ((pName[3] & ~0x20) == 'C')
	348	&& ((pName[4] & ~0x20) == 'K')
	349	&& (pName[5] == '$')
	350	&& !pName[6])
	351	return true;
	352	break;
	353	case 'O': /* COMx, CON, CONIN$ CONOUT$ */
	354	if ((pName[2] & ~0x20) == 'M') {
	355	if ((pName[3] >= '1') && (pName[3] <= '9')
	356	&& !pName[4])
	357	return true;
	358	}
	359	else if ((pName[2] & ~0x20) == 'N') {
	360	if (!pName[3])
	361	return true;
	362	else if ((pName[3] & ~0x20) == 'I') {
	363	if (((pName[4] & ~0x20) == 'N')
	364	&& (pName[5] == '$')
	365	&& !pName[6])
	366	return true;
	367	}
	368	else if ((pName[3] & ~0x20) == 'O') {
	369	if (((pName[4] & ~0x20) == 'U')
	370	&& ((pName[5] & ~0x20) == 'T')
	371	&& (pName[6] == '$')
	372	&& !pName[7])
	373	return true;
	374	}
	375	}
	376	break;
	377	}
	378	break;
	379	case 'L': /* LPTx */
	380	if (((pName[1] & ~0x20) == 'U')
	381	&& ((pName[2] & ~0x20) == 'X')
	382	&& (pName[3] >= '1') && (pName[3] <= '9')
	383	&& !pName[4])
	384	return true;
	385	break;
	386	case 'N': /* NUL */
	387	if (((pName[1] & ~0x20) == 'U')
	388	&& ((pName[2] & ~0x20) == 'L')
	389	&& !pName[3])
390	return true;
391	break;
392	case 'P': /* PRN */
393	if (((pName[1] & ~0x20) == 'R')
394	&& ((pName[2] & ~0x20) == 'N')
395	&& !pName[3])
396	return true;
397	break;
398	}
399	return false;
400	}
401
7766f137	402	char VDir::MapPathA(const char pInName)
	403	{ /*
	404	* possiblities -- relative path or absolute path with or without drive letter
	405	* OR UNC name
	406	*/
	407	char szBuffer[(MAX_PATH+1)*2];
	408	char szlBuf[MAX_PATH+1];
93153446	409	int length = strlen(pInName);
	410
	411	if (!length)
	412	return (char*)pInName;
7766f137	413
93153446	414	if (length > MAX_PATH) {
7766f137	415	strncpy(szlBuf, pInName, MAX_PATH);
	416	if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) {
	417	/* absolute path - reduce length by 2 for drive specifier */
	418	szlBuf[MAX_PATH-2] = '\0';
	419	}
	420	else
	421	szlBuf[MAX_PATH] = '\0';
	422	pInName = szlBuf;
	423	}
	424	/* strlen(pInName) is now <= MAX_PATH */
	425
	426	if (pInName[1] == ':') {
	427	/* has drive letter */
	428	if (IsPathSep(pInName[2])) {
	429	/* absolute with drive letter */
98b36f88	430	DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA);
7766f137	431	}
	432	else {
	433	/* relative path with drive letter */
	434	strcpy(szBuffer, GetDirA(DriveIndex(*pInName)));
	435	strcat(szBuffer, &pInName[2]);
	436	if(strlen(szBuffer) > MAX_PATH)
	437	szBuffer[MAX_PATH] = '\0';
	438
	439	DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
	440	}
	441	}
	442	else {
	443	/* no drive letter */
	444	if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) {
	445	/* UNC name */
98b36f88	446	DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA);
7766f137	447	}
	448	else {
	449	strcpy(szBuffer, GetDefaultDirA());
	450	if (IsPathSep(pInName[0])) {
	451	/* absolute path */
98b36f88	452	strcpy(&szBuffer[2], pInName);
98b36f88	453	DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
7766f137	454	}
	455	else {
	456	/* relative path */
e2694c95	457	if (IsSpecialFileName(pInName)) {
	458	return (char*)pInName;
	459	}
	460	else {
	461	strcat(szBuffer, pInName);
	462	if (strlen(szBuffer) > MAX_PATH)
	463	szBuffer[MAX_PATH] = '\0';
7766f137	464
e2694c95	465	DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
e2694c95	466	}
7766f137	467	}
	468	}
	469	}
	470
	471	return szLocalBufferA;
	472	}
	473
	474	int VDir::SetCurrentDirectoryA(char *lpBuffer)
	475	{
93153446	476	char *pPtr;
fd9459bc	477	int length, nRet = -1;
7766f137	478
93153446	479	pPtr = MapPathA(lpBuffer);
	480	length = strlen(pPtr);
	481	if(length > 3 && IsPathSep(pPtr[length-1])) {
	482	/* don't remove the trailing slash from 'x:\' */
	483	pPtr[length-1] = '\0';
fd9459bc	484	}
7766f137	485
93153446	486	DWORD r = GetFileAttributesA(pPtr);
	487	if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY))
	488	{
2eb25c99	489	char szBuffer[(MAX_PATH+1)*2];
	490	DoGetFullPathNameA(pPtr, sizeof(szBuffer), szBuffer);
	491	SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
7766f137	492	nRet = 0;
7766f137	493	}
93153446	494
7766f137	495	return nRet;
	496	}
	497
	498	DWORD VDir::CalculateEnvironmentSpace(void)
9afd7f94	499	{ /* the current directory environment strings are stored as '=D:=d:\path' */
7766f137	500	int index;
	501	DWORD dwSize = 0;
	502	for (index = 0; index < driveCount; ++index) {
	503	if (dirTableA[index] != NULL) {
9afd7f94	504	dwSize += strlen(dirTableA[index]) + 5; /* add 1 for trailing NULL and 4 for '=D:=' */
7766f137	505	}
	506	}
	507	return dwSize;
	508	}
	509
	510	LPSTR VDir::BuildEnvironmentSpace(LPSTR lpStr)
9afd7f94	511	{ /* store the current directory environment strings as '=D:=d:\path' */
9afd7f94	512	int index, length;
7766f137	513	LPSTR lpDirStr;
	514	for (index = 0; index < driveCount; ++index) {
	515	lpDirStr = dirTableA[index];
	516	if (lpDirStr != NULL) {
	517	lpStr[0] = '=';
	518	lpStr[1] = lpDirStr[0];
9afd7f94	519	lpStr[2] = '\0';
	520	CharUpper(&lpStr[1]);
	521	lpStr[2] = ':';
	522	lpStr[3] = '=';
	523	strcpy(&lpStr[4], lpDirStr);
	524	length = strlen(lpDirStr);
	525	lpStr += length + 5; /* add 1 for trailing NULL and 4 for '=D:=' */
	526	if (length > 3 && IsPathSep(lpStr[-2])) {
	527	lpStr[-2] = '\0'; /* remove the trailing path separator */
	528	--lpStr;
	529	}
7766f137	530	}
	531	}
	532	return lpStr;
	533	}
	534
	535	inline BOOL IsPathSep(WCHAR ch)
	536	{
	537	return (ch == '\\' \|\| ch == '/');
	538	}
	539
	540	inline void DoGetFullPathNameW(WCHAR* lpBuffer, DWORD dwSize, WCHAR* Dest)
	541	{
	542	WCHAR *pPtr;
	543
	544	/*
	545	* On WinNT GetFullPathName does not fail, (or at least always
	546	* succeeds when the drive is valid) WinNT does set *Dest to Nullch
	547	* On Win98 GetFullPathName will set last error if it fails, but
	548	* does not touch *Dest
	549	*/
	550	*Dest = '\0';
	551	GetFullPathNameW(lpBuffer, dwSize, Dest, &pPtr);
	552	}
	553
e2694c95	554	inline bool IsSpecialFileName(const WCHAR* pName)
	555	{
	556	/* specical file names are devices that the system can open
	557	* these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
	558	* (x is a single digit, and names are case-insensitive)
	559	*/
	560	WCHAR ch = (pName[0] & ~0x20);
	561	switch (ch)
	562	{
	563	case 'A': /* AUX */
	564	if (((pName[1] & ~0x20) == 'U')
	565	&& ((pName[2] & ~0x20) == 'X')
	566	&& !pName[3])
	567	return true;
	568	break;
	569	case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */
	570	ch = (pName[1] & ~0x20);
	571	switch (ch)
	572	{
	573	case 'L': /* CLOCK$ */
	574	if (((pName[2] & ~0x20) == 'O')
	575	&& ((pName[3] & ~0x20) == 'C')
	576	&& ((pName[4] & ~0x20) == 'K')
	577	&& (pName[5] == '$')
	578	&& !pName[6])
	579	return true;
	580	break;
	581	case 'O': /* COMx, CON, CONIN$ CONOUT$ */
	582	if ((pName[2] & ~0x20) == 'M') {
	583	if ((pName[3] >= '1') && (pName[3] <= '9')
	584	&& !pName[4])
	585	return true;
	586	}
	587	else if ((pName[2] & ~0x20) == 'N') {
	588	if (!pName[3])
	589	return true;
	590	else if ((pName[3] & ~0x20) == 'I') {
	591	if (((pName[4] & ~0x20) == 'N')
	592	&& (pName[5] == '$')
	593	&& !pName[6])
	594	return true;
	595	}
	596	else if ((pName[3] & ~0x20) == 'O') {
	597	if (((pName[4] & ~0x20) == 'U')
	598	&& ((pName[5] & ~0x20) == 'T')
	599	&& (pName[6] == '$')
	600	&& !pName[7])
	601	return true;
	602	}
	603	}
	604	break;
	605	}
	606	break;
	607	case 'L': /* LPTx */
	608	if (((pName[1] & ~0x20) == 'U')
	609	&& ((pName[2] & ~0x20) == 'X')
	610	&& (pName[3] >= '1') && (pName[3] <= '9')
	611	&& !pName[4])
	612	return true;
	613	break;
	614	case 'N': /* NUL */
	615	if (((pName[1] & ~0x20) == 'U')
	616	&& ((pName[2] & ~0x20) == 'L')
	617	&& !pName[3])
618	return true;
619	break;
620	case 'P': /* PRN */
621	if (((pName[1] & ~0x20) == 'R')
622	&& ((pName[2] & ~0x20) == 'N')
623	&& !pName[3])
624	return true;
625	break;
626	}
627	return false;
628	}
629
7766f137	630	WCHAR* VDir::MapPathW(const WCHAR *pInName)
	631	{ /*
	632	* possiblities -- relative path or absolute path with or without drive letter
	633	* OR UNC name
	634	*/
	635	WCHAR szBuffer[(MAX_PATH+1)*2];
	636	WCHAR szlBuf[MAX_PATH+1];
93153446	637	int length = wcslen(pInName);
7766f137	638
93153446	639	if (!length)
	640	return (WCHAR*)pInName;
	641
	642	if (length > MAX_PATH) {
7766f137	643	wcsncpy(szlBuf, pInName, MAX_PATH);
	644	if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) {
	645	/* absolute path - reduce length by 2 for drive specifier */
	646	szlBuf[MAX_PATH-2] = '\0';
	647	}
	648	else
	649	szlBuf[MAX_PATH] = '\0';
	650	pInName = szlBuf;
	651	}
	652	/* strlen(pInName) is now <= MAX_PATH */
	653
	654	if (pInName[1] == ':') {
	655	/* has drive letter */
	656	if (IsPathSep(pInName[2])) {
	657	/* absolute with drive letter */
98b36f88	658	DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
7766f137	659	}
	660	else {
	661	/* relative path with drive letter */
	662	wcscpy(szBuffer, GetDirW(DriveIndex((char)*pInName)));
	663	wcscat(szBuffer, &pInName[2]);
	664	if(wcslen(szBuffer) > MAX_PATH)
	665	szBuffer[MAX_PATH] = '\0';
	666
	667	DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
	668	}
	669	}
	670	else {
	671	/* no drive letter */
	672	if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) {
	673	/* UNC name */
98b36f88	674	DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
7766f137	675	}
	676	else {
	677	wcscpy(szBuffer, GetDefaultDirW());
	678	if (IsPathSep(pInName[0])) {
	679	/* absolute path */
98b36f88	680	wcscpy(&szBuffer[2], pInName);
98b36f88	681	DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
7766f137	682	}
	683	else {
	684	/* relative path */
e2694c95	685	if (IsSpecialFileName(pInName)) {
	686	return (WCHAR*)pInName;
	687	}
	688	else {
	689	wcscat(szBuffer, pInName);
	690	if (wcslen(szBuffer) > MAX_PATH)
	691	szBuffer[MAX_PATH] = '\0';
7766f137	692
e2694c95	693	DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW);
e2694c95	694	}
7766f137	695	}
	696	}
	697	}
	698	return szLocalBufferW;
	699	}
	700
fd9459bc	701	int VDir::SetCurrentDirectoryW(WCHAR *lpBuffer)
fd9459bc	702	{
93153446	703	WCHAR *pPtr;
fd9459bc	704	int length, nRet = -1;
fd9459bc	705
93153446	706	pPtr = MapPathW(lpBuffer);
	707	length = wcslen(pPtr);
	708	if(length > 3 && IsPathSep(pPtr[length-1])) {
	709	/* don't remove the trailing slash from 'x:\' */
	710	pPtr[length-1] = '\0';
fd9459bc	711	}
fd9459bc	712
93153446	713	DWORD r = GetFileAttributesW(pPtr);
	714	if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY))
	715	{
2eb25c99	716	WCHAR wBuffer[(MAX_PATH+1)*2];
	717	DoGetFullPathNameW(pPtr, (sizeof(wBuffer)/sizeof(WCHAR)), wBuffer);
	718	SetDefaultDirW(wBuffer, DriveIndex((char)wBuffer[0]));
fd9459bc	719	nRet = 0;
fd9459bc	720	}
93153446	721
fd9459bc	722	return nRet;
fd9459bc	723	}
7766f137	724
7766f137	725	#endif /* ___VDir_H___ */