1: #pragma once

  3: #include <petsc/private/viewerimpl.h>

  5: typedef struct _n_PetscViewerVTKObjectLink *PetscViewerVTKObjectLink;
  6: struct _n_PetscViewerVTKObjectLink {
  7:   PetscViewerVTKFieldType  ft;
  8:   PetscObject              vec;
  9:   PetscViewerVTKObjectLink next;
 10:   PetscInt                 field;
 11: };

 13: typedef struct {
 14:   char                    *filename;
 15:   PetscFileMode            btype;
 16:   PetscObject              dm;
 17:   PetscViewerVTKObjectLink link;
 18:   PetscErrorCode (*write)(PetscObject, PetscViewer);
 19: } PetscViewer_VTK;

 21: PETSC_EXTERN PetscErrorCode PetscViewerVTKFWrite(PetscViewer, FILE *, const void *, PetscCount, MPI_Datatype);

 23: #if defined(PETSC_HAVE_STDINT_H) /* The VTK format requires a 32-bit integer */
 24: typedef int32_t PetscVTKInt;
 25: #else /* Hope int is 32-bits */
 26: typedef int PetscVTKInt;
 27: #endif
 28: typedef unsigned char PetscVTKType;

 30: #define PETSC_VTK_INT_MAX 2147483647
 31: #define PETSC_VTK_INT_MIN -2147483647

 33: /*@C
 34:   PetscVTKIntCast - casts to a `PetscVTKInt` (which may be 32-bits in size), generates an
 35:   error if the `PetscVTKInt` is not large enough to hold the number.

 37:   Not Collective; No Fortran Support

 39:   Input Parameter:
 40: . a - the  value to cast

 42:   Output Parameter:
 43: . b - the resulting `PetscVTKInt` value

 45:   Level: advanced

 47: .seealso: `PetscBLASInt`, `PetscMPIInt`, `PetscInt`, `PetscBLASIntCast()`, `PetscIntCast()`
 48: @*/
 49: static inline PetscErrorCode PetscVTKIntCast(PetscCount a, PetscVTKInt *b)
 50: {
 51:   PetscFunctionBegin;
 52:   *b = 0; /* to prevent compilers erroneously suggesting uninitialized variable */
 53:   PetscCheck(a <= PETSC_VTK_INT_MAX, PETSC_COMM_SELF, PETSC_ERR_ARG_OUTOFRANGE, "%" PetscCount_FMT " is too big for VTK integer. Maximum supported value is %d", a, PETSC_MPI_INT_MAX);
 54:   *b = (PetscVTKInt)a;
 55:   PetscFunctionReturn(PETSC_SUCCESS);
 56: }

 58: /* the only problem we've encountered so far is spaces not being acceptable for paraview field names */
 59: static inline PetscErrorCode PetscViewerVTKSanitizeName_Internal(char name[], size_t maxlen)
 60: {
 61:   size_t c;

 63:   PetscFunctionBegin;
 64:   for (c = 0; c < maxlen; c++) {
 65:     char a = name[c];
 66:     if (a == '\0') break;
 67:     if (a == ' ') name[c] = '_';
 68:   }
 69:   PetscFunctionReturn(PETSC_SUCCESS);
 70: }