#define PETSC_DLL

#include "src/sys/viewer/viewerimpl.h"  /*I "petsc.h" I*/  

PetscCookie PETSC_VIEWER_COOKIE = 0;

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerDestroy" 
/*@
   PetscViewerDestroy - Destroys a PetscViewer.

   Collective on PetscViewer

   Input Parameters:
.  viewer - the PetscViewer to be destroyed.

   Level: beginner

.seealso: PetscViewerSocketOpen(), PetscViewerASCIIOpen(), PetscViewerCreate(), PetscViewerDrawOpen()

@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerDestroy(PetscViewer viewer)
{
  PetscErrorCode ierr;

  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  ierr = PetscViewerFlush(viewer);CHKERRQ(ierr);
  if (--viewer->refct > 0) PetscFunctionReturn(0);

  ierr = PetscObjectDepublish(viewer);CHKERRQ(ierr);

  if (viewer->ops->destroy) {
    ierr = (*viewer->ops->destroy)(viewer);CHKERRQ(ierr);
  }
  ierr = PetscHeaderDestroy(viewer);CHKERRQ(ierr);
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerGetType" 
/*@C
   PetscViewerGetType - Returns the type of a PetscViewer.

   Not Collective

   Input Parameter:
.   viewer - the PetscViewer

   Output Parameter:
.  type - PetscViewer type (see below)

   Available Types Include:
.  PETSC_VIEWER_SOCKET - Socket PetscViewer
.  PETSC_VIEWER_ASCII - ASCII PetscViewer
.  PETSC_VIEWER_BINARY - binary file PetscViewer
.  PETSC_VIEWER_STRING - string PetscViewer
.  PETSC_VIEWER_DRAW - drawing PetscViewer

   Level: intermediate

   Note:
   See include/petscviewer.h for a complete list of PetscViewers.

   PetscViewerType is actually a string

.seealso: PetscViewerCreate(), PetscViewerSetType()

@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerGetType(PetscViewer viewer,PetscViewerType *type)
{
  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  *type = (PetscViewerType) viewer->type_name;
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerSetOptionsPrefix"
/*@C
   PetscViewerSetOptionsPrefix - Sets the prefix used for searching for all 
   PetscViewer options in the database.

   Collective on PetscViewer

   Input Parameter:
+  viewer - the PetscViewer context
-  prefix - the prefix to prepend to all option names

   Notes:
   A hyphen (-) must NOT be given at the beginning of the prefix name.
   The first character of all runtime options is AUTOMATICALLY the hyphen.

   Level: advanced

.keywords: PetscViewer, set, options, prefix, database

.seealso: PetscViewerSetFromOptions()
@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerSetOptionsPrefix(PetscViewer viewer,const char prefix[])
{
  PetscErrorCode ierr;

  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  ierr = PetscObjectSetOptionsPrefix((PetscObject)viewer,prefix);CHKERRQ(ierr);
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerAppendOptionsPrefix"
/*@C
   PetscViewerAppendOptionsPrefix - Appends to the prefix used for searching for all 
   PetscViewer options in the database.

   Collective on PetscViewer

   Input Parameters:
+  viewer - the PetscViewer context
-  prefix - the prefix to prepend to all option names

   Notes:
   A hyphen (-) must NOT be given at the beginning of the prefix name.
   The first character of all runtime options is AUTOMATICALLY the hyphen.

   Level: advanced

.keywords: PetscViewer, append, options, prefix, database

.seealso: PetscViewerGetOptionsPrefix()
@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerAppendOptionsPrefix(PetscViewer viewer,const char prefix[])
{
  PetscErrorCode ierr;
  
  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  ierr = PetscObjectAppendOptionsPrefix((PetscObject)viewer,prefix);CHKERRQ(ierr);
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerGetOptionsPrefix"
/*@C
   PetscViewerGetOptionsPrefix - Sets the prefix used for searching for all 
   PetscViewer options in the database.

   Not Collective

   Input Parameter:
.  viewer - the PetscViewer context

   Output Parameter:
.  prefix - pointer to the prefix string used

   Notes: On the fortran side, the user should pass in a string 'prefix' of
   sufficient length to hold the prefix.

   Level: advanced

.keywords: PetscViewer, get, options, prefix, database

.seealso: PetscViewerAppendOptionsPrefix()
@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerGetOptionsPrefix(PetscViewer viewer,const char *prefix[])
{
  PetscErrorCode ierr;

  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  ierr = PetscObjectGetOptionsPrefix((PetscObject)viewer,prefix);CHKERRQ(ierr);
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerSetUp"
/*@
   PetscViewerSetUp - Sets up the internal viewer data structures for the later use.

   Collective on PetscViewer

   Input Parameters:
.  viewer - the PetscViewer context

   Notes:
   For basic use of the PetscViewer classes the user need not explicitly call
   PetscViewerSetUp(), since these actions will happen automatically.

   Level: advanced

.keywords: PetscViewer, setup

.seealso: PetscViewerCreate(), PetscViewerDestroy()
@*/
PetscErrorCode PETSC_DLLEXPORT PetscViewerSetUp(PetscViewer viewer)
{
  PetscFunctionBegin;
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,1);
  PetscFunctionReturn(0);
}

#undef __FUNCT__  
#define __FUNCT__ "PetscViewerView"
/*@C
   PetscViewerView - Visualizes a viewer object.

   Collective on PetscViewer

   Input Parameters:
+  v - the viewer
-  viewer - visualization context

  Notes:
  The available visualization contexts include
+    PETSC_VIEWER_STDOUT_SELF - standard output (default)
.    PETSC_VIEWER_STDOUT_WORLD - synchronized standard
        output where only the first processor opens
        the file.  All other processors send their 
        data to the first processor to print. 
-     PETSC_VIEWER_DRAW_WORLD - graphical display of nonzero structure

   Level: beginner

.seealso: PetscViewerSetFormat(), PetscViewerASCIIOpen(), PetscViewerDrawOpen(), 
          PetscViewerSocketOpen(), PetscViewerBinaryOpen(), PetscViewerLoad()
@*/
PetscErrorCode PETSCVEC_DLLEXPORT PetscViewerView(PetscViewer v,PetscViewer viewer)
{
  PetscErrorCode    ierr;
  PetscTruth        iascii;
  const char        *cstr;
  PetscViewerFormat format;

  PetscFunctionBegin;
  PetscValidHeaderSpecific(v,PETSC_VIEWER_COOKIE,1);
  PetscValidType(v,1);
  if (!viewer) {
    ierr = PetscViewerASCIIGetStdout(v->comm,&viewer);CHKERRQ(ierr);
  }
  PetscValidHeaderSpecific(viewer,PETSC_VIEWER_COOKIE,2);
  PetscCheckSameComm(v,1,viewer,2);

  ierr = PetscTypeCompare((PetscObject)viewer,PETSC_VIEWER_ASCII,&iascii);CHKERRQ(ierr);
  if (iascii) {
    ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr);  
    if (format == PETSC_VIEWER_ASCII_INFO || format == PETSC_VIEWER_ASCII_INFO_DETAIL) {
      if (v->prefix) {
        ierr = PetscViewerASCIIPrintf(viewer,"PetscViewer Object:(%s)\n",v->prefix);CHKERRQ(ierr);
      } else {
        ierr = PetscViewerASCIIPrintf(viewer,"PetscViewer Object:\n");CHKERRQ(ierr);
      }
      ierr = PetscViewerASCIIPushTab(viewer);CHKERRQ(ierr);
      ierr = PetscViewerGetType(v,&cstr);CHKERRQ(ierr);
      ierr = PetscViewerASCIIPrintf(viewer,"type=%s\n",cstr);CHKERRQ(ierr);
    }
  }
  if (!iascii) {
    SETERRQ1(PETSC_ERR_SUP,"Viewer type %s not supported",((PetscObject)viewer)->type_name);
  } else {
    ierr = PetscViewerGetFormat(viewer,&format);CHKERRQ(ierr);  
    if (format == PETSC_VIEWER_ASCII_INFO || format == PETSC_VIEWER_ASCII_INFO_DETAIL) {
      ierr = PetscViewerASCIIPopTab(viewer);CHKERRQ(ierr);
    }
  }
  PetscFunctionReturn(0);
}