| 352 | |
| 353 | |
| 354 | void NextVolumeName(wchar *ArcName,uint MaxLength,bool OldNumbering) |
| 355 | { |
| 356 | wchar *ChPtr; |
| 357 | if ((ChPtr=GetExt(ArcName))==NULL) |
| 358 | { |
| 359 | wcsncatz(ArcName,L".rar",MaxLength); |
| 360 | ChPtr=GetExt(ArcName); |
| 361 | } |
| 362 | else |
| 363 | if (ChPtr[1]==0 || wcsicomp(ChPtr,L".exe")==0 || wcsicomp(ChPtr,L".sfx")==0) |
| 364 | wcsncpyz(ChPtr,L".rar",MaxLength-(ChPtr-ArcName)); |
| 365 | |
| 366 | if (ChPtr==NULL || *ChPtr!='.' || ChPtr[1]==0) |
| 367 | { |
| 368 | // Normally we shall have some extension here. If we don't, it means |
| 369 | // the name has no extension and buffer has no free space to append one. |
| 370 | // Let's clear the name to prevent a new call with same name and return. |
| 371 | *ArcName=0; |
| 372 | return; |
| 373 | } |
| 374 | |
| 375 | if (!OldNumbering) |
| 376 | { |
| 377 | ChPtr=GetVolNumPart(ArcName); |
| 378 | |
| 379 | // We should not check for IsDigit(*ChPtr) here and should increment |
| 380 | // even non-digits. If we got a corrupt archive with volume flag, |
| 381 | // but without numeric part, we still need to modify its name somehow, |
| 382 | // so while (exist(name)) {NextVolumeName()} loops do not run infinitely. |
| 383 | while ((++(*ChPtr))=='9'+1) |
| 384 | { |
| 385 | *ChPtr='0'; |
| 386 | ChPtr--; |
| 387 | if (ChPtr<ArcName || !IsDigit(*ChPtr)) |
| 388 | { |
| 389 | // Convert .part:.rar (.part9.rar after increment) to part10.rar. |
| 390 | for (wchar *EndPtr=ArcName+wcslen(ArcName);EndPtr!=ChPtr;EndPtr--) |
| 391 | *(EndPtr+1)=*EndPtr; |
| 392 | *(ChPtr+1)='1'; |
| 393 | break; |
| 394 | } |
| 395 | } |
| 396 | } |
| 397 | else |
| 398 | if (!IsDigit(ChPtr[2]) || !IsDigit(ChPtr[3])) |
| 399 | wcsncpyz(ChPtr+2,L"00",MaxLength-(ChPtr-ArcName)-2); // From .rar to .r00. |
| 400 | else |
| 401 | { |
| 402 | ChPtr+=wcslen(ChPtr)-1; // Set to last character. |
| 403 | while (++(*ChPtr)=='9'+1) |
| 404 | if (ChPtr<=ArcName || *(ChPtr-1)=='.') |
| 405 | { |
| 406 | *ChPtr='a'; // From .999 to .a00 if started from .001 or for too short names. |
| 407 | break; |
| 408 | } |
| 409 | else |
| 410 | { |
| 411 | *ChPtr='0'; |