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 @*/ PetscGetHomeDirectory(char dir[],size_t maxlen)26PetscErrorCode PetscGetHomeDirectory(char dir[],size_t maxlen) 27 { 28 PetscErrorCode ierr; 29 const char *d1; 30 31 PetscFunctionBegin; 32 d1 = getenv("HOME"); 33 if (d1) { 34 ierr = PetscStrncpy(dir,d1,maxlen);CHKERRQ(ierr); 35 } else if (maxlen > 0) dir[0] = 0; 36 PetscFunctionReturn(0); 37 } 38 39 /*@C 40 PetscFixFilename - Fixes a file name so that it is correct for both Unix and 41 Windows by using the correct / or \ to separate directories. 42 43 Not Collective 44 45 Input Parameter: 46 . filein - name of file to be fixed 47 48 Output Parameter: 49 . fileout - the fixed name. Should long enough to hold the filename. 50 51 Level: advanced 52 53 Notes: 54 Call PetscFixFilename() just before calling fopen(). 55 @*/ PetscFixFilename(const char filein[],char fileout[])56PetscErrorCode PetscFixFilename(const char filein[],char fileout[]) 57 { 58 PetscErrorCode ierr; 59 size_t i,n; 60 61 PetscFunctionBegin; 62 if (!filein || !fileout) PetscFunctionReturn(0); 63 64 ierr = PetscStrlen(filein,&n);CHKERRQ(ierr); 65 for (i=0; i<n; i++) { 66 if (filein[i] == PETSC_REPLACE_DIR_SEPARATOR) fileout[i] = PETSC_DIR_SEPARATOR; 67 else fileout[i] = filein[i]; 68 } 69 fileout[n] = 0; 70 PetscFunctionReturn(0); 71 } 72