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 { 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(0); 36 } 37 38 /*@C 39 PetscFixFilename - Fixes a file name so that it is correct for both Unix and 40 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: advanced 51 52 Notes: 53 Call PetscFixFilename() just before calling fopen(). 54 @*/ 55 PetscErrorCode PetscFixFilename(const char filein[],char fileout[]) 56 { 57 size_t i,n; 58 59 PetscFunctionBegin; 60 if (!filein || !fileout) PetscFunctionReturn(0); 61 62 PetscCall(PetscStrlen(filein,&n)); 63 for (i=0; i<n; i++) { 64 if (filein[i] == PETSC_REPLACE_DIR_SEPARATOR) fileout[i] = PETSC_DIR_SEPARATOR; 65 else fileout[i] = filein[i]; 66 } 67 fileout[n] = 0; 68 PetscFunctionReturn(0); 69 } 70