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693 lines
17 KiB
693 lines
17 KiB
/* vdir.h
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*
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* (c) 1999 Microsoft Corporation. All rights reserved.
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* Portions (c) 1999 ActiveState Tool Corp, http://www.ActiveState.com/
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*
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* You may distribute under the terms of either the GNU General Public
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* License or the Artistic License, as specified in the README file.
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*/
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#ifndef ___VDir_H___
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#define ___VDir_H___
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/*
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* Allow one slot for each possible drive letter
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* and one additional slot for a UNC name
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*/
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const int driveCount = ('Z'-'A')+1+1;
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class VDir
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{
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public:
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VDir(int bManageDir = 1);
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~VDir() {};
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void Init(VDir* pDir, VMem *pMem);
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void SetDefaultA(char const *pDefault);
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void SetDefaultW(WCHAR const *pDefault);
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char* MapPathA(const char *pInName);
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WCHAR* MapPathW(const WCHAR *pInName);
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int SetCurrentDirectoryA(char *lpBuffer);
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int SetCurrentDirectoryW(WCHAR *lpBuffer);
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inline int GetDefault(void) { return nDefault; };
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inline char* GetCurrentDirectoryA(int dwBufSize, char *lpBuffer)
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{
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char* ptr = dirTableA[nDefault];
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while (dwBufSize--)
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{
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if ((*lpBuffer++ = *ptr++) == '\0')
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break;
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}
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return lpBuffer;
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};
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inline WCHAR* GetCurrentDirectoryW(int dwBufSize, WCHAR *lpBuffer)
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{
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WCHAR* ptr = dirTableW[nDefault];
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while (dwBufSize--)
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{
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if ((*lpBuffer++ = *ptr++) == '\0')
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break;
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}
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return lpBuffer;
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};
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DWORD CalculateEnvironmentSpace(void);
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LPSTR BuildEnvironmentSpace(LPSTR lpStr);
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protected:
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int SetDirA(char const *pPath, int index);
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void FromEnvA(char *pEnv, int index);
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inline const char *GetDefaultDirA(void)
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{
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return dirTableA[nDefault];
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};
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inline void SetDefaultDirA(char const *pPath, int index)
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{
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SetDirA(pPath, index);
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nDefault = index;
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};
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int SetDirW(WCHAR const *pPath, int index);
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inline const WCHAR *GetDefaultDirW(void)
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{
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return dirTableW[nDefault];
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};
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inline void SetDefaultDirW(WCHAR const *pPath, int index)
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{
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SetDirW(pPath, index);
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nDefault = index;
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};
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inline const char *GetDirA(int index)
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{
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char *ptr = dirTableA[index];
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if (!ptr) {
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/* simulate the existance of this drive */
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ptr = szLocalBufferA;
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ptr[0] = 'A' + index;
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ptr[1] = ':';
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ptr[2] = '\\';
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ptr[3] = 0;
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}
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return ptr;
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};
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inline const WCHAR *GetDirW(int index)
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{
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WCHAR *ptr = dirTableW[index];
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if (!ptr) {
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/* simulate the existance of this drive */
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ptr = szLocalBufferW;
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ptr[0] = 'A' + index;
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ptr[1] = ':';
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ptr[2] = '\\';
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ptr[3] = 0;
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}
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return ptr;
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};
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inline int DriveIndex(char chr)
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{
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if (chr == '\\' || chr == '/')
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return ('Z'-'A')+1;
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return (chr | 0x20)-'a';
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};
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VMem *pMem;
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int nDefault, bManageDirectory;
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char *dirTableA[driveCount];
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char szLocalBufferA[MAX_PATH+1];
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WCHAR *dirTableW[driveCount];
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WCHAR szLocalBufferW[MAX_PATH+1];
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};
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VDir::VDir(int bManageDir /* = 1 */)
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{
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nDefault = 0;
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bManageDirectory = bManageDir;
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memset(dirTableA, 0, sizeof(dirTableA));
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memset(dirTableW, 0, sizeof(dirTableW));
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}
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void VDir::Init(VDir* pDir, VMem *p)
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{
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int index;
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DWORD driveBits;
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int nSave;
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char szBuffer[MAX_PATH*driveCount];
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pMem = p;
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if (pDir) {
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for (index = 0; index < driveCount; ++index) {
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SetDirW(pDir->GetDirW(index), index);
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}
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nDefault = pDir->GetDefault();
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}
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else {
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nSave = bManageDirectory;
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bManageDirectory = 0;
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driveBits = GetLogicalDrives();
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if (GetLogicalDriveStrings(sizeof(szBuffer), szBuffer)) {
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char* pEnv = GetEnvironmentStrings();
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char* ptr = szBuffer;
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for (index = 0; index < driveCount; ++index) {
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if (driveBits & (1<<index)) {
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ptr += SetDirA(ptr, index) + 1;
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FromEnvA(pEnv, index);
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}
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}
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FreeEnvironmentStrings(pEnv);
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}
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SetDefaultA(".");
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bManageDirectory = nSave;
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}
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}
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int VDir::SetDirA(char const *pPath, int index)
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{
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char chr, *ptr;
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int length = 0;
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WCHAR wBuffer[MAX_PATH+1];
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if (index < driveCount && pPath != NULL) {
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length = strlen(pPath);
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pMem->Free(dirTableA[index]);
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ptr = dirTableA[index] = (char*)pMem->Malloc(length+2);
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if (ptr != NULL) {
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strcpy(ptr, pPath);
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ptr += length-1;
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chr = *ptr++;
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if (chr != '\\' && chr != '/') {
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*ptr++ = '\\';
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*ptr = '\0';
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}
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MultiByteToWideChar(CP_ACP, 0, dirTableA[index], -1,
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wBuffer, (sizeof(wBuffer)/sizeof(WCHAR)));
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length = wcslen(wBuffer);
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pMem->Free(dirTableW[index]);
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dirTableW[index] = (WCHAR*)pMem->Malloc((length+1)*2);
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if (dirTableW[index] != NULL) {
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wcscpy(dirTableW[index], wBuffer);
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}
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}
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}
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if(bManageDirectory)
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::SetCurrentDirectoryA(pPath);
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return length;
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}
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void VDir::FromEnvA(char *pEnv, int index)
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{ /* gets the directory for index from the environment variable. */
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while (*pEnv != '\0') {
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if ((pEnv[0] == '=') && (DriveIndex(pEnv[1]) == index)) {
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SetDirA(&pEnv[4], index);
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break;
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}
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else
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pEnv += strlen(pEnv)+1;
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}
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}
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void VDir::SetDefaultA(char const *pDefault)
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{
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char szBuffer[MAX_PATH+1];
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char *pPtr;
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if (GetFullPathNameA(pDefault, sizeof(szBuffer), szBuffer, &pPtr)) {
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if (*pDefault != '.' && pPtr != NULL)
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*pPtr = '\0';
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SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
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}
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}
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int VDir::SetDirW(WCHAR const *pPath, int index)
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{
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WCHAR chr, *ptr;
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char szBuffer[MAX_PATH+1];
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int length = 0;
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if (index < driveCount && pPath != NULL) {
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length = wcslen(pPath);
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pMem->Free(dirTableW[index]);
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ptr = dirTableW[index] = (WCHAR*)pMem->Malloc((length+2)*2);
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if (ptr != NULL) {
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wcscpy(ptr, pPath);
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ptr += length-1;
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chr = *ptr++;
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if (chr != '\\' && chr != '/') {
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*ptr++ = '\\';
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*ptr = '\0';
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}
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WideCharToMultiByte(CP_ACP, 0, dirTableW[index], -1, szBuffer, sizeof(szBuffer), NULL, NULL);
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length = strlen(szBuffer);
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pMem->Free(dirTableA[index]);
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dirTableA[index] = (char*)pMem->Malloc(length+1);
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if (dirTableA[index] != NULL) {
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strcpy(dirTableA[index], szBuffer);
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}
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}
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}
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if(bManageDirectory)
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::SetCurrentDirectoryW(pPath);
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return length;
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}
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void VDir::SetDefaultW(WCHAR const *pDefault)
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{
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WCHAR szBuffer[MAX_PATH+1];
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WCHAR *pPtr;
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if (GetFullPathNameW(pDefault, (sizeof(szBuffer)/sizeof(WCHAR)), szBuffer, &pPtr)) {
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if (*pDefault != '.' && pPtr != NULL)
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*pPtr = '\0';
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SetDefaultDirW(szBuffer, DriveIndex((char)szBuffer[0]));
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}
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}
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inline BOOL IsPathSep(char ch)
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{
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return (ch == '\\' || ch == '/');
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}
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inline void DoGetFullPathNameA(char* lpBuffer, DWORD dwSize, char* Dest)
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{
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char *pPtr;
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/*
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* On WinNT GetFullPathName does not fail, (or at least always
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* succeeds when the drive is valid) WinNT does set *Dest to Nullch
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* On Win98 GetFullPathName will set last error if it fails, but
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* does not touch *Dest
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*/
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*Dest = '\0';
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GetFullPathNameA(lpBuffer, dwSize, Dest, &pPtr);
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}
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inline bool IsSpecialFileName(const char* pName)
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{
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/* specical file names are devices that the system can open
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* these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
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* (x is a single digit, and names are case-insensitive)
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*/
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char ch = (pName[0] & ~0x20);
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switch (ch)
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{
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case 'A': /* AUX */
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if (((pName[1] & ~0x20) == 'U')
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&& ((pName[2] & ~0x20) == 'X')
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&& !pName[3])
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return true;
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break;
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case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */
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ch = (pName[1] & ~0x20);
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switch (ch)
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{
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case 'L': /* CLOCK$ */
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if (((pName[2] & ~0x20) == 'O')
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&& ((pName[3] & ~0x20) == 'C')
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&& ((pName[4] & ~0x20) == 'K')
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&& (pName[5] == '$')
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&& !pName[6])
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return true;
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break;
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case 'O': /* COMx, CON, CONIN$ CONOUT$ */
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if ((pName[2] & ~0x20) == 'M') {
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if ((pName[3] >= '1') && (pName[3] <= '9')
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&& !pName[4])
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return true;
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}
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else if ((pName[2] & ~0x20) == 'N') {
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if (!pName[3])
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return true;
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else if ((pName[3] & ~0x20) == 'I') {
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if (((pName[4] & ~0x20) == 'N')
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&& (pName[5] == '$')
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&& !pName[6])
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return true;
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}
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else if ((pName[3] & ~0x20) == 'O') {
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if (((pName[4] & ~0x20) == 'U')
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&& ((pName[5] & ~0x20) == 'T')
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&& (pName[6] == '$')
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&& !pName[7])
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return true;
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}
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}
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break;
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}
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break;
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case 'L': /* LPTx */
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if (((pName[1] & ~0x20) == 'U')
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&& ((pName[2] & ~0x20) == 'X')
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&& (pName[3] >= '1') && (pName[3] <= '9')
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&& !pName[4])
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return true;
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break;
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case 'N': /* NUL */
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if (((pName[1] & ~0x20) == 'U')
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&& ((pName[2] & ~0x20) == 'L')
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&& !pName[3])
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return true;
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break;
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case 'P': /* PRN */
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if (((pName[1] & ~0x20) == 'R')
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&& ((pName[2] & ~0x20) == 'N')
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&& !pName[3])
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return true;
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break;
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}
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return false;
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}
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char *VDir::MapPathA(const char *pInName)
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{ /*
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* possiblities -- relative path or absolute path with or without drive letter
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* OR UNC name
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*/
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char szBuffer[(MAX_PATH+1)*2];
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char szlBuf[MAX_PATH+1];
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int length = strlen(pInName);
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if (!length)
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return (char*)pInName;
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if (length > MAX_PATH) {
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strncpy(szlBuf, pInName, MAX_PATH);
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if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) {
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/* absolute path - reduce length by 2 for drive specifier */
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szlBuf[MAX_PATH-2] = '\0';
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}
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else
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szlBuf[MAX_PATH] = '\0';
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pInName = szlBuf;
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}
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/* strlen(pInName) is now <= MAX_PATH */
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if (pInName[1] == ':') {
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/* has drive letter */
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if (IsPathSep(pInName[2])) {
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/* absolute with drive letter */
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strcpy(szLocalBufferA, pInName);
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}
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else {
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/* relative path with drive letter */
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strcpy(szBuffer, GetDirA(DriveIndex(*pInName)));
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strcat(szBuffer, &pInName[2]);
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if(strlen(szBuffer) > MAX_PATH)
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szBuffer[MAX_PATH] = '\0';
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DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
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}
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}
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else {
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/* no drive letter */
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if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) {
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/* UNC name */
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strcpy(szLocalBufferA, pInName);
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}
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else {
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strcpy(szBuffer, GetDefaultDirA());
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if (IsPathSep(pInName[0])) {
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/* absolute path */
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szLocalBufferA[0] = szBuffer[0];
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szLocalBufferA[1] = szBuffer[1];
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strcpy(&szLocalBufferA[2], pInName);
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}
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else {
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/* relative path */
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if (IsSpecialFileName(pInName)) {
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return (char*)pInName;
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}
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else {
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strcat(szBuffer, pInName);
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if (strlen(szBuffer) > MAX_PATH)
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szBuffer[MAX_PATH] = '\0';
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DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA);
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}
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}
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}
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}
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return szLocalBufferA;
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}
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int VDir::SetCurrentDirectoryA(char *lpBuffer)
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{
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char *pPtr;
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int length, nRet = -1;
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pPtr = MapPathA(lpBuffer);
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length = strlen(pPtr);
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if(length > 3 && IsPathSep(pPtr[length-1])) {
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/* don't remove the trailing slash from 'x:\' */
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pPtr[length-1] = '\0';
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}
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DWORD r = GetFileAttributesA(pPtr);
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if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY))
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{
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char szBuffer[(MAX_PATH+1)*2];
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DoGetFullPathNameA(pPtr, sizeof(szBuffer), szBuffer);
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SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0]));
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nRet = 0;
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}
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return nRet;
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}
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DWORD VDir::CalculateEnvironmentSpace(void)
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{ /* the current directory environment strings are stored as '=D:=d:\path' */
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int index;
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DWORD dwSize = 0;
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for (index = 0; index < driveCount; ++index) {
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if (dirTableA[index] != NULL) {
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dwSize += strlen(dirTableA[index]) + 5; /* add 1 for trailing NULL and 4 for '=D:=' */
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}
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}
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return dwSize;
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}
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LPSTR VDir::BuildEnvironmentSpace(LPSTR lpStr)
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{ /* store the current directory environment strings as '=D:=d:\path' */
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int index, length;
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LPSTR lpDirStr;
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for (index = 0; index < driveCount; ++index) {
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lpDirStr = dirTableA[index];
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if (lpDirStr != NULL) {
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lpStr[0] = '=';
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lpStr[1] = lpDirStr[0];
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lpStr[2] = '\0';
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CharUpper(&lpStr[1]);
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lpStr[2] = ':';
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lpStr[3] = '=';
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strcpy(&lpStr[4], lpDirStr);
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length = strlen(lpDirStr);
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lpStr += length + 5; /* add 1 for trailing NULL and 4 for '=D:=' */
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if (length > 3 && IsPathSep(lpStr[-2])) {
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lpStr[-2] = '\0'; /* remove the trailing path separator */
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--lpStr;
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}
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}
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}
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return lpStr;
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}
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inline BOOL IsPathSep(WCHAR ch)
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{
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return (ch == '\\' || ch == '/');
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}
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inline void DoGetFullPathNameW(WCHAR* lpBuffer, DWORD dwSize, WCHAR* Dest)
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{
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WCHAR *pPtr;
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|
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/*
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* On WinNT GetFullPathName does not fail, (or at least always
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* succeeds when the drive is valid) WinNT does set *Dest to Nullch
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* On Win98 GetFullPathName will set last error if it fails, but
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* does not touch *Dest
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*/
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*Dest = '\0';
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GetFullPathNameW(lpBuffer, dwSize, Dest, &pPtr);
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}
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inline bool IsSpecialFileName(const WCHAR* pName)
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{
|
|
/* specical file names are devices that the system can open
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|
* these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$
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|
* (x is a single digit, and names are case-insensitive)
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|
*/
|
|
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 */
|
|
wcscpy(szLocalBufferW, pInName);
|
|
}
|
|
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 */
|
|
wcscpy(szLocalBufferW, pInName);
|
|
}
|
|
else {
|
|
wcscpy(szBuffer, GetDefaultDirW());
|
|
if (IsPathSep(pInName[0])) {
|
|
/* absolute path */
|
|
szLocalBufferW[0] = szBuffer[0];
|
|
szLocalBufferW[1] = szBuffer[1];
|
|
wcscpy(&szLocalBufferW[2], pInName);
|
|
}
|
|
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___ */
|