1 /* 2 Code for manipulating files. 3 */ 4 #include <petscsys.h> 5 6 /*@C 7 PetscGetHomeDirectory - Returns the name of the user's home directory 8 9 Not Collective 10 11 Input Parameter: 12 . maxlen - maximum length allowed 13 14 Output Parameter: 15 . dir - contains the home directory. Must be long enough to hold the name. 16 17 Level: developer 18 19 Notes: 20 If PETSc cannot determine the home directory it makes `dir` an empty string 21 22 On Microsoft Windows machines the environmental variable `HOME` specifies the home directory. 23 24 .seealso: `PetscGetTmp()`, `PetscSharedTmp()`, `PetscGetWorkingDirectory()` 25 @*/ 26 PetscErrorCode PetscGetHomeDirectory(char dir[], size_t maxlen) 27 { 28 const char *d1; 29 30 PetscFunctionBegin; 31 d1 = getenv("HOME"); 32 if (d1) { 33 PetscCall(PetscStrncpy(dir, d1, maxlen)); 34 } else if (maxlen > 0) dir[0] = 0; 35 PetscFunctionReturn(PETSC_SUCCESS); 36 } 37 38 /*@C 39 PetscFixFilename - Fixes a file name so that it is correct for both Unix and 40 Microsoft Windows by using the correct / or \ to separate directories. 41 42 Not Collective 43 44 Input Parameter: 45 . filein - name of file to be fixed 46 47 Output Parameter: 48 . fileout - the fixed name. Should long enough to hold the filename. 49 50 Level: developer 51 52 .seealso: `PetscFOpen()` 53 @*/ 54 PetscErrorCode PetscFixFilename(const char filein[], char fileout[]) 55 { 56 size_t i, n; 57 58 PetscFunctionBegin; 59 if (!filein || !fileout) PetscFunctionReturn(PETSC_SUCCESS); 60 61 PetscCall(PetscStrlen(filein, &n)); 62 for (i = 0; i < n; i++) { 63 if (filein[i] == PETSC_REPLACE_DIR_SEPARATOR) fileout[i] = PETSC_DIR_SEPARATOR; 64 else fileout[i] = filein[i]; 65 } 66 fileout[n] = 0; 67 PetscFunctionReturn(PETSC_SUCCESS); 68 } 69