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216db7ee VK |
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 | ||
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; | |
18 | ||
19 | class VDir | |
20 | { | |
21 | public: | |
22 | VDir(int bManageDir = 1); | |
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); | |
32 | inline int GetDefault(void) { return nDefault; }; | |
33 | ||
34 | inline char* GetCurrentDirectoryA(int dwBufSize, char *lpBuffer) | |
35 | { | |
36 | char* ptr = dirTableA[nDefault]; | |
37 | while (dwBufSize--) | |
38 | { | |
39 | if ((*lpBuffer++ = *ptr++) == '\0') | |
40 | break; | |
41 | } | |
42 | return lpBuffer; | |
43 | }; | |
44 | inline WCHAR* GetCurrentDirectoryW(int dwBufSize, WCHAR *lpBuffer) | |
45 | { | |
46 | WCHAR* ptr = dirTableW[nDefault]; | |
47 | while (dwBufSize--) | |
48 | { | |
49 | if ((*lpBuffer++ = *ptr++) == '\0') | |
50 | break; | |
51 | } | |
52 | return lpBuffer; | |
53 | }; | |
54 | ||
55 | ||
56 | DWORD CalculateEnvironmentSpace(void); | |
57 | LPSTR BuildEnvironmentSpace(LPSTR lpStr); | |
58 | ||
59 | protected: | |
60 | int SetDirA(char const *pPath, int index); | |
61 | void FromEnvA(char *pEnv, int index); | |
62 | inline const char *GetDefaultDirA(void) | |
63 | { | |
64 | return dirTableA[nDefault]; | |
65 | }; | |
66 | ||
67 | inline void SetDefaultDirA(char const *pPath, int index) | |
68 | { | |
69 | SetDirA(pPath, index); | |
70 | nDefault = index; | |
71 | }; | |
72 | int SetDirW(WCHAR const *pPath, int index); | |
73 | inline const WCHAR *GetDefaultDirW(void) | |
74 | { | |
75 | return dirTableW[nDefault]; | |
76 | }; | |
77 | ||
78 | inline void SetDefaultDirW(WCHAR const *pPath, int index) | |
79 | { | |
80 | SetDirW(pPath, index); | |
81 | nDefault = index; | |
82 | }; | |
83 | inline const char *GetDirA(int index) | |
84 | { | |
85 | char *ptr = dirTableA[index]; | |
86 | if (!ptr) { | |
87 | /* simulate the existance of this drive */ | |
88 | ptr = szLocalBufferA; | |
89 | ptr[0] = 'A' + index; | |
90 | ptr[1] = ':'; | |
91 | ptr[2] = '\\'; | |
92 | ptr[3] = 0; | |
93 | } | |
94 | return ptr; | |
95 | }; | |
96 | inline const WCHAR *GetDirW(int index) | |
97 | { | |
98 | WCHAR *ptr = dirTableW[index]; | |
99 | if (!ptr) { | |
100 | /* simulate the existance of this drive */ | |
101 | ptr = szLocalBufferW; | |
102 | ptr[0] = 'A' + index; | |
103 | ptr[1] = ':'; | |
104 | ptr[2] = '\\'; | |
105 | ptr[3] = 0; | |
106 | } | |
107 | return ptr; | |
108 | }; | |
109 | ||
110 | inline int DriveIndex(char chr) | |
111 | { | |
112 | if (chr == '\\' || chr == '/') | |
113 | return ('Z'-'A')+1; | |
114 | return (chr | 0x20)-'a'; | |
115 | }; | |
116 | ||
117 | VMem *pMem; | |
118 | int nDefault, bManageDirectory; | |
119 | char *dirTableA[driveCount]; | |
120 | char szLocalBufferA[MAX_PATH+1]; | |
121 | WCHAR *dirTableW[driveCount]; | |
122 | WCHAR szLocalBufferW[MAX_PATH+1]; | |
123 | }; | |
124 | ||
125 | ||
126 | VDir::VDir(int bManageDir /* = 1 */) | |
127 | { | |
128 | nDefault = 0; | |
129 | bManageDirectory = bManageDir; | |
130 | memset(dirTableA, 0, sizeof(dirTableA)); | |
131 | memset(dirTableW, 0, sizeof(dirTableW)); | |
132 | } | |
133 | ||
134 | void VDir::Init(VDir* pDir, VMem *p) | |
135 | { | |
136 | int index; | |
137 | DWORD driveBits; | |
138 | int nSave; | |
139 | char szBuffer[MAX_PATH*driveCount]; | |
140 | ||
141 | pMem = p; | |
142 | if (pDir) { | |
143 | for (index = 0; index < driveCount; ++index) { | |
144 | SetDirW(pDir->GetDirW(index), index); | |
145 | } | |
146 | nDefault = pDir->GetDefault(); | |
147 | } | |
148 | else { | |
149 | nSave = bManageDirectory; | |
150 | bManageDirectory = 0; | |
151 | driveBits = GetLogicalDrives(); | |
152 | if (GetLogicalDriveStrings(sizeof(szBuffer), szBuffer)) { | |
153 | char* pEnv = (char*)GetEnvironmentStrings(); | |
154 | char* ptr = szBuffer; | |
155 | for (index = 0; index < driveCount; ++index) { | |
156 | if (driveBits & (1<<index)) { | |
157 | ptr += SetDirA(ptr, index) + 1; | |
158 | FromEnvA(pEnv, index); | |
159 | } | |
160 | } | |
161 | FreeEnvironmentStrings(pEnv); | |
162 | } | |
163 | SetDefaultA("."); | |
164 | bManageDirectory = nSave; | |
165 | } | |
166 | } | |
167 | ||
168 | int VDir::SetDirA(char const *pPath, int index) | |
169 | { | |
170 | char chr, *ptr; | |
171 | int length = 0; | |
172 | WCHAR wBuffer[MAX_PATH+1]; | |
173 | if (index < driveCount && pPath != NULL) { | |
174 | length = strlen(pPath); | |
175 | pMem->Free(dirTableA[index]); | |
176 | ptr = dirTableA[index] = (char*)pMem->Malloc(length+2); | |
177 | if (ptr != NULL) { | |
178 | strcpy(ptr, pPath); | |
179 | ptr += length-1; | |
180 | chr = *ptr++; | |
181 | if (chr != '\\' && chr != '/') { | |
182 | *ptr++ = '\\'; | |
183 | *ptr = '\0'; | |
184 | } | |
185 | MultiByteToWideChar(CP_ACP, 0, dirTableA[index], -1, | |
186 | wBuffer, (sizeof(wBuffer)/sizeof(WCHAR))); | |
187 | length = wcslen(wBuffer); | |
188 | pMem->Free(dirTableW[index]); | |
189 | dirTableW[index] = (WCHAR*)pMem->Malloc((length+1)*2); | |
190 | if (dirTableW[index] != NULL) { | |
191 | wcscpy(dirTableW[index], wBuffer); | |
192 | } | |
193 | } | |
194 | } | |
195 | ||
196 | if(bManageDirectory) | |
197 | ::SetCurrentDirectoryA(pPath); | |
198 | ||
199 | return length; | |
200 | } | |
201 | ||
202 | void VDir::FromEnvA(char *pEnv, int index) | |
203 | { /* gets the directory for index from the environment variable. */ | |
204 | while (*pEnv != '\0') { | |
205 | if ((pEnv[0] == '=') && (DriveIndex(pEnv[1]) == index)) { | |
206 | SetDirA(&pEnv[4], index); | |
207 | break; | |
208 | } | |
209 | else | |
210 | pEnv += strlen(pEnv)+1; | |
211 | } | |
212 | } | |
213 | ||
214 | void VDir::SetDefaultA(char const *pDefault) | |
215 | { | |
216 | char szBuffer[MAX_PATH+1]; | |
217 | char *pPtr; | |
218 | ||
219 | if (GetFullPathNameA(pDefault, sizeof(szBuffer), szBuffer, &pPtr)) { | |
220 | if (*pDefault != '.' && pPtr != NULL) | |
221 | *pPtr = '\0'; | |
222 | ||
223 | SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0])); | |
224 | } | |
225 | } | |
226 | ||
227 | int VDir::SetDirW(WCHAR const *pPath, int index) | |
228 | { | |
229 | WCHAR chr, *ptr; | |
230 | char szBuffer[MAX_PATH+1]; | |
231 | int length = 0; | |
232 | if (index < driveCount && pPath != NULL) { | |
233 | length = wcslen(pPath); | |
234 | pMem->Free(dirTableW[index]); | |
235 | ptr = dirTableW[index] = (WCHAR*)pMem->Malloc((length+2)*2); | |
236 | if (ptr != NULL) { | |
237 | wcscpy(ptr, pPath); | |
238 | ptr += length-1; | |
239 | chr = *ptr++; | |
240 | if (chr != '\\' && chr != '/') { | |
241 | *ptr++ = '\\'; | |
242 | *ptr = '\0'; | |
243 | } | |
244 | WideCharToMultiByte(CP_ACP, 0, dirTableW[index], -1, szBuffer, sizeof(szBuffer), NULL, NULL); | |
245 | length = strlen(szBuffer); | |
246 | pMem->Free(dirTableA[index]); | |
247 | dirTableA[index] = (char*)pMem->Malloc(length+1); | |
248 | if (dirTableA[index] != NULL) { | |
249 | strcpy(dirTableA[index], szBuffer); | |
250 | } | |
251 | } | |
252 | } | |
253 | ||
254 | if(bManageDirectory) | |
255 | ::SetCurrentDirectoryW(pPath); | |
256 | ||
257 | return length; | |
258 | } | |
259 | ||
260 | void VDir::SetDefaultW(WCHAR const *pDefault) | |
261 | { | |
262 | WCHAR szBuffer[MAX_PATH+1]; | |
263 | WCHAR *pPtr; | |
264 | ||
265 | if (GetFullPathNameW(pDefault, (sizeof(szBuffer)/sizeof(WCHAR)), szBuffer, &pPtr)) { | |
266 | if (*pDefault != '.' && pPtr != NULL) | |
267 | *pPtr = '\0'; | |
268 | ||
269 | SetDefaultDirW(szBuffer, DriveIndex((char)szBuffer[0])); | |
270 | } | |
271 | } | |
272 | ||
273 | inline BOOL IsPathSep(char ch) | |
274 | { | |
275 | return (ch == '\\' || ch == '/'); | |
276 | } | |
277 | ||
278 | inline void DoGetFullPathNameA(char* lpBuffer, DWORD dwSize, char* Dest) | |
279 | { | |
280 | char *pPtr; | |
281 | ||
282 | /* | |
283 | * On WinNT GetFullPathName does not fail, (or at least always | |
284 | * succeeds when the drive is valid) WinNT does set *Dest to Nullch | |
285 | * On Win98 GetFullPathName will set last error if it fails, but | |
286 | * does not touch *Dest | |
287 | */ | |
288 | *Dest = '\0'; | |
289 | GetFullPathNameA(lpBuffer, dwSize, Dest, &pPtr); | |
290 | } | |
291 | ||
292 | inline bool IsSpecialFileName(const char* pName) | |
293 | { | |
294 | /* specical file names are devices that the system can open | |
295 | * these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$ | |
296 | * (x is a single digit, and names are case-insensitive) | |
297 | */ | |
298 | char ch = (pName[0] & ~0x20); | |
299 | switch (ch) | |
300 | { | |
301 | case 'A': /* AUX */ | |
302 | if (((pName[1] & ~0x20) == 'U') | |
303 | && ((pName[2] & ~0x20) == 'X') | |
304 | && !pName[3]) | |
305 | return true; | |
306 | break; | |
307 | case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */ | |
308 | ch = (pName[1] & ~0x20); | |
309 | switch (ch) | |
310 | { | |
311 | case 'L': /* CLOCK$ */ | |
312 | if (((pName[2] & ~0x20) == 'O') | |
313 | && ((pName[3] & ~0x20) == 'C') | |
314 | && ((pName[4] & ~0x20) == 'K') | |
315 | && (pName[5] == '$') | |
316 | && !pName[6]) | |
317 | return true; | |
318 | break; | |
319 | case 'O': /* COMx, CON, CONIN$ CONOUT$ */ | |
320 | if ((pName[2] & ~0x20) == 'M') { | |
321 | if ((pName[3] >= '1') && (pName[3] <= '9') | |
322 | && !pName[4]) | |
323 | return true; | |
324 | } | |
325 | else if ((pName[2] & ~0x20) == 'N') { | |
326 | if (!pName[3]) | |
327 | return true; | |
328 | else if ((pName[3] & ~0x20) == 'I') { | |
329 | if (((pName[4] & ~0x20) == 'N') | |
330 | && (pName[5] == '$') | |
331 | && !pName[6]) | |
332 | return true; | |
333 | } | |
334 | else if ((pName[3] & ~0x20) == 'O') { | |
335 | if (((pName[4] & ~0x20) == 'U') | |
336 | && ((pName[5] & ~0x20) == 'T') | |
337 | && (pName[6] == '$') | |
338 | && !pName[7]) | |
339 | return true; | |
340 | } | |
341 | } | |
342 | break; | |
343 | } | |
344 | break; | |
345 | case 'L': /* LPTx */ | |
346 | if (((pName[1] & ~0x20) == 'U') | |
347 | && ((pName[2] & ~0x20) == 'X') | |
348 | && (pName[3] >= '1') && (pName[3] <= '9') | |
349 | && !pName[4]) | |
350 | return true; | |
351 | break; | |
352 | case 'N': /* NUL */ | |
353 | if (((pName[1] & ~0x20) == 'U') | |
354 | && ((pName[2] & ~0x20) == 'L') | |
355 | && !pName[3]) | |
356 | return true; | |
357 | break; | |
358 | case 'P': /* PRN */ | |
359 | if (((pName[1] & ~0x20) == 'R') | |
360 | && ((pName[2] & ~0x20) == 'N') | |
361 | && !pName[3]) | |
362 | return true; | |
363 | break; | |
364 | } | |
365 | return false; | |
366 | } | |
367 | ||
368 | char *VDir::MapPathA(const char *pInName) | |
369 | { /* | |
370 | * possiblities -- relative path or absolute path with or without drive letter | |
371 | * OR UNC name | |
372 | */ | |
373 | char szBuffer[(MAX_PATH+1)*2]; | |
374 | char szlBuf[MAX_PATH+1]; | |
375 | int length = strlen(pInName); | |
376 | ||
377 | if (!length) | |
378 | return (char*)pInName; | |
379 | ||
380 | if (length > MAX_PATH) { | |
381 | strncpy(szlBuf, pInName, MAX_PATH); | |
382 | if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) { | |
383 | /* absolute path - reduce length by 2 for drive specifier */ | |
384 | szlBuf[MAX_PATH-2] = '\0'; | |
385 | } | |
386 | else | |
387 | szlBuf[MAX_PATH] = '\0'; | |
388 | pInName = szlBuf; | |
389 | } | |
390 | /* strlen(pInName) is now <= MAX_PATH */ | |
391 | ||
392 | if (pInName[1] == ':') { | |
393 | /* has drive letter */ | |
394 | if (IsPathSep(pInName[2])) { | |
395 | /* absolute with drive letter */ | |
396 | DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA); | |
397 | } | |
398 | else { | |
399 | /* relative path with drive letter */ | |
400 | strcpy(szBuffer, GetDirA(DriveIndex(*pInName))); | |
401 | strcat(szBuffer, &pInName[2]); | |
402 | if(strlen(szBuffer) > MAX_PATH) | |
403 | szBuffer[MAX_PATH] = '\0'; | |
404 | ||
405 | DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA); | |
406 | } | |
407 | } | |
408 | else { | |
409 | /* no drive letter */ | |
410 | if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) { | |
411 | /* UNC name */ | |
412 | DoGetFullPathNameA((char*)pInName, sizeof(szLocalBufferA), szLocalBufferA); | |
413 | } | |
414 | else { | |
415 | strcpy(szBuffer, GetDefaultDirA()); | |
416 | if (IsPathSep(pInName[0])) { | |
417 | /* absolute path */ | |
418 | strcpy(&szBuffer[2], pInName); | |
419 | DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA); | |
420 | } | |
421 | else { | |
422 | /* relative path */ | |
423 | if (IsSpecialFileName(pInName)) { | |
424 | return (char*)pInName; | |
425 | } | |
426 | else { | |
427 | strcat(szBuffer, pInName); | |
428 | if (strlen(szBuffer) > MAX_PATH) | |
429 | szBuffer[MAX_PATH] = '\0'; | |
430 | ||
431 | DoGetFullPathNameA(szBuffer, sizeof(szLocalBufferA), szLocalBufferA); | |
432 | } | |
433 | } | |
434 | } | |
435 | } | |
436 | ||
437 | return szLocalBufferA; | |
438 | } | |
439 | ||
440 | int VDir::SetCurrentDirectoryA(char *lpBuffer) | |
441 | { | |
442 | char *pPtr; | |
443 | int length, nRet = -1; | |
444 | ||
445 | pPtr = MapPathA(lpBuffer); | |
446 | length = strlen(pPtr); | |
447 | if(length > 3 && IsPathSep(pPtr[length-1])) { | |
448 | /* don't remove the trailing slash from 'x:\' */ | |
449 | pPtr[length-1] = '\0'; | |
450 | } | |
451 | ||
452 | DWORD r = GetFileAttributesA(pPtr); | |
453 | if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY)) | |
454 | { | |
455 | char szBuffer[(MAX_PATH+1)*2]; | |
456 | DoGetFullPathNameA(pPtr, sizeof(szBuffer), szBuffer); | |
457 | SetDefaultDirA(szBuffer, DriveIndex(szBuffer[0])); | |
458 | nRet = 0; | |
459 | } | |
460 | ||
461 | return nRet; | |
462 | } | |
463 | ||
464 | DWORD VDir::CalculateEnvironmentSpace(void) | |
465 | { /* the current directory environment strings are stored as '=D:=d:\path' */ | |
466 | int index; | |
467 | DWORD dwSize = 0; | |
468 | for (index = 0; index < driveCount; ++index) { | |
469 | if (dirTableA[index] != NULL) { | |
470 | dwSize += strlen(dirTableA[index]) + 5; /* add 1 for trailing NULL and 4 for '=D:=' */ | |
471 | } | |
472 | } | |
473 | return dwSize; | |
474 | } | |
475 | ||
476 | LPSTR VDir::BuildEnvironmentSpace(LPSTR lpStr) | |
477 | { /* store the current directory environment strings as '=D:=d:\path' */ | |
478 | int index, length; | |
479 | LPSTR lpDirStr; | |
480 | for (index = 0; index < driveCount; ++index) { | |
481 | lpDirStr = dirTableA[index]; | |
482 | if (lpDirStr != NULL) { | |
483 | lpStr[0] = '='; | |
484 | lpStr[1] = lpDirStr[0]; | |
485 | lpStr[2] = '\0'; | |
486 | CharUpper(&lpStr[1]); | |
487 | lpStr[2] = ':'; | |
488 | lpStr[3] = '='; | |
489 | strcpy(&lpStr[4], lpDirStr); | |
490 | length = strlen(lpDirStr); | |
491 | lpStr += length + 5; /* add 1 for trailing NULL and 4 for '=D:=' */ | |
492 | if (length > 3 && IsPathSep(lpStr[-2])) { | |
493 | lpStr[-2] = '\0'; /* remove the trailing path separator */ | |
494 | --lpStr; | |
495 | } | |
496 | } | |
497 | } | |
498 | return lpStr; | |
499 | } | |
500 | ||
501 | inline BOOL IsPathSep(WCHAR ch) | |
502 | { | |
503 | return (ch == '\\' || ch == '/'); | |
504 | } | |
505 | ||
506 | inline void DoGetFullPathNameW(WCHAR* lpBuffer, DWORD dwSize, WCHAR* Dest) | |
507 | { | |
508 | WCHAR *pPtr; | |
509 | ||
510 | /* | |
511 | * On WinNT GetFullPathName does not fail, (or at least always | |
512 | * succeeds when the drive is valid) WinNT does set *Dest to Nullch | |
513 | * On Win98 GetFullPathName will set last error if it fails, but | |
514 | * does not touch *Dest | |
515 | */ | |
516 | *Dest = '\0'; | |
517 | GetFullPathNameW(lpBuffer, dwSize, Dest, &pPtr); | |
518 | } | |
519 | ||
520 | inline bool IsSpecialFileName(const WCHAR* pName) | |
521 | { | |
522 | /* specical file names are devices that the system can open | |
523 | * these include AUX, CON, NUL, PRN, COMx, LPTx, CLOCK$, CONIN$, CONOUT$ | |
524 | * (x is a single digit, and names are case-insensitive) | |
525 | */ | |
526 | WCHAR ch = (pName[0] & ~0x20); | |
527 | switch (ch) | |
528 | { | |
529 | case 'A': /* AUX */ | |
530 | if (((pName[1] & ~0x20) == 'U') | |
531 | && ((pName[2] & ~0x20) == 'X') | |
532 | && !pName[3]) | |
533 | return true; | |
534 | break; | |
535 | case 'C': /* CLOCK$, COMx, CON, CONIN$ CONOUT$ */ | |
536 | ch = (pName[1] & ~0x20); | |
537 | switch (ch) | |
538 | { | |
539 | case 'L': /* CLOCK$ */ | |
540 | if (((pName[2] & ~0x20) == 'O') | |
541 | && ((pName[3] & ~0x20) == 'C') | |
542 | && ((pName[4] & ~0x20) == 'K') | |
543 | && (pName[5] == '$') | |
544 | && !pName[6]) | |
545 | return true; | |
546 | break; | |
547 | case 'O': /* COMx, CON, CONIN$ CONOUT$ */ | |
548 | if ((pName[2] & ~0x20) == 'M') { | |
549 | if ((pName[3] >= '1') && (pName[3] <= '9') | |
550 | && !pName[4]) | |
551 | return true; | |
552 | } | |
553 | else if ((pName[2] & ~0x20) == 'N') { | |
554 | if (!pName[3]) | |
555 | return true; | |
556 | else if ((pName[3] & ~0x20) == 'I') { | |
557 | if (((pName[4] & ~0x20) == 'N') | |
558 | && (pName[5] == '$') | |
559 | && !pName[6]) | |
560 | return true; | |
561 | } | |
562 | else if ((pName[3] & ~0x20) == 'O') { | |
563 | if (((pName[4] & ~0x20) == 'U') | |
564 | && ((pName[5] & ~0x20) == 'T') | |
565 | && (pName[6] == '$') | |
566 | && !pName[7]) | |
567 | return true; | |
568 | } | |
569 | } | |
570 | break; | |
571 | } | |
572 | break; | |
573 | case 'L': /* LPTx */ | |
574 | if (((pName[1] & ~0x20) == 'U') | |
575 | && ((pName[2] & ~0x20) == 'X') | |
576 | && (pName[3] >= '1') && (pName[3] <= '9') | |
577 | && !pName[4]) | |
578 | return true; | |
579 | break; | |
580 | case 'N': /* NUL */ | |
581 | if (((pName[1] & ~0x20) == 'U') | |
582 | && ((pName[2] & ~0x20) == 'L') | |
583 | && !pName[3]) | |
584 | return true; | |
585 | break; | |
586 | case 'P': /* PRN */ | |
587 | if (((pName[1] & ~0x20) == 'R') | |
588 | && ((pName[2] & ~0x20) == 'N') | |
589 | && !pName[3]) | |
590 | return true; | |
591 | break; | |
592 | } | |
593 | return false; | |
594 | } | |
595 | ||
596 | WCHAR* VDir::MapPathW(const WCHAR *pInName) | |
597 | { /* | |
598 | * possiblities -- relative path or absolute path with or without drive letter | |
599 | * OR UNC name | |
600 | */ | |
601 | WCHAR szBuffer[(MAX_PATH+1)*2]; | |
602 | WCHAR szlBuf[MAX_PATH+1]; | |
603 | int length = wcslen(pInName); | |
604 | ||
605 | if (!length) | |
606 | return (WCHAR*)pInName; | |
607 | ||
608 | if (length > MAX_PATH) { | |
609 | wcsncpy(szlBuf, pInName, MAX_PATH); | |
610 | if (IsPathSep(pInName[0]) && !IsPathSep(pInName[1])) { | |
611 | /* absolute path - reduce length by 2 for drive specifier */ | |
612 | szlBuf[MAX_PATH-2] = '\0'; | |
613 | } | |
614 | else | |
615 | szlBuf[MAX_PATH] = '\0'; | |
616 | pInName = szlBuf; | |
617 | } | |
618 | /* strlen(pInName) is now <= MAX_PATH */ | |
619 | ||
620 | if (pInName[1] == ':') { | |
621 | /* has drive letter */ | |
622 | if (IsPathSep(pInName[2])) { | |
623 | /* absolute with drive letter */ | |
624 | DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW); | |
625 | } | |
626 | else { | |
627 | /* relative path with drive letter */ | |
628 | wcscpy(szBuffer, GetDirW(DriveIndex((char)*pInName))); | |
629 | wcscat(szBuffer, &pInName[2]); | |
630 | if(wcslen(szBuffer) > MAX_PATH) | |
631 | szBuffer[MAX_PATH] = '\0'; | |
632 | ||
633 | DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW); | |
634 | } | |
635 | } | |
636 | else { | |
637 | /* no drive letter */ | |
638 | if (IsPathSep(pInName[1]) && IsPathSep(pInName[0])) { | |
639 | /* UNC name */ | |
640 | DoGetFullPathNameW((WCHAR*)pInName, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW); | |
641 | } | |
642 | else { | |
643 | wcscpy(szBuffer, GetDefaultDirW()); | |
644 | if (IsPathSep(pInName[0])) { | |
645 | /* absolute path */ | |
646 | wcscpy(&szBuffer[2], pInName); | |
647 | DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW); | |
648 | } | |
649 | else { | |
650 | /* relative path */ | |
651 | if (IsSpecialFileName(pInName)) { | |
652 | return (WCHAR*)pInName; | |
653 | } | |
654 | else { | |
655 | wcscat(szBuffer, pInName); | |
656 | if (wcslen(szBuffer) > MAX_PATH) | |
657 | szBuffer[MAX_PATH] = '\0'; | |
658 | ||
659 | DoGetFullPathNameW(szBuffer, (sizeof(szLocalBufferW)/sizeof(WCHAR)), szLocalBufferW); | |
660 | } | |
661 | } | |
662 | } | |
663 | } | |
664 | return szLocalBufferW; | |
665 | } | |
666 | ||
667 | int VDir::SetCurrentDirectoryW(WCHAR *lpBuffer) | |
668 | { | |
669 | WCHAR *pPtr; | |
670 | int length, nRet = -1; | |
671 | ||
672 | pPtr = MapPathW(lpBuffer); | |
673 | length = wcslen(pPtr); | |
674 | if(length > 3 && IsPathSep(pPtr[length-1])) { | |
675 | /* don't remove the trailing slash from 'x:\' */ | |
676 | pPtr[length-1] = '\0'; | |
677 | } | |
678 | ||
679 | DWORD r = GetFileAttributesW(pPtr); | |
680 | if ((r != 0xffffffff) && (r & FILE_ATTRIBUTE_DIRECTORY)) | |
681 | { | |
682 | WCHAR wBuffer[(MAX_PATH+1)*2]; | |
683 | DoGetFullPathNameW(pPtr, (sizeof(wBuffer)/sizeof(WCHAR)), wBuffer); | |
684 | SetDefaultDirW(wBuffer, DriveIndex((char)wBuffer[0])); | |
685 | nRet = 0; | |
686 | } | |
687 | ||
688 | return nRet; | |
689 | } | |
690 | ||
691 | #endif /* ___VDir_H___ */ |