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