static char help[] = "Example for PetscOptionsInsertFileYAML\n";

#include <petscsys.h>
#include <petscviewer.h>

int main(int argc,char **argv)
{
  PetscErrorCode  ierr;
  char            filename[PETSC_MAX_PATH_LEN];
  PetscBool       flg;

  ierr = PetscInitialize(&argc,&argv,NULL,help);if (ierr) return ierr;

  ierr = PetscOptionsGetString(NULL,NULL,"-f",filename,sizeof(filename),&flg);
  if (flg) {
    ierr = PetscOptionsInsertFileYAML(PETSC_COMM_WORLD,NULL,filename,PETSC_TRUE);CHKERRQ(ierr);
  }

  ierr = PetscOptionsGetString(NULL,NULL,"-yaml",filename,sizeof(filename),&flg);
  if (flg) {
    PetscBool monitor = PETSC_FALSE;
    ierr = PetscOptionsGetBool(NULL,NULL,"-monitor",&monitor,NULL);CHKERRQ(ierr);
    if (monitor) {
      ierr = PetscOptionsMonitorSet(PetscOptionsMonitorDefault,NULL,NULL);CHKERRQ(ierr);
    }
    ierr = PetscOptionsClear(NULL);CHKERRQ(ierr);
    ierr = PetscOptionsInsertFileYAML(PETSC_COMM_WORLD,NULL,filename,PETSC_TRUE);CHKERRQ(ierr);
  }

  ierr = PetscOptionsView(NULL,PETSC_VIEWER_STDOUT_WORLD);CHKERRQ(ierr);
  ierr = PetscOptionsClear(NULL);CHKERRQ(ierr);
  ierr = PetscFinalize();
  return ierr;
}

/*TEST

   testset:
     args: -options_left false
     filter:  egrep -v "(options_left|options_monitor|malloc_dump|malloc_test|saws_port_auto_select|display|check_pointer_intensity|error_output_stdout|nox|vecscatter_mpi1|use_gpu_aware_mpi|checkstack)"
     localrunfiles: petsc.yml

     test:
        suffix: 1
        args: -f petsc.yml

     test:
        suffix: 2_file
        output_file: output/ex47_2.out
        args: -options_file_yaml petsc.yml

     test:
        suffix: 2_string
        output_file: output/ex47_2.out
        args: -options_string_yaml "`cat petsc.yml`"

     test:
        suffix: 2_auto
        args: -options_monitor
        args: -options_file ex47-yaml_tag
        args: -options_file ex47-yaml_doc
        localrunfiles: ex47-yaml_tag ex47-yaml_doc

     test:
        suffix: 2_prefix
        args: -options_monitor
        args: -options_file ex47-opt.txt
        args: -prefix_push p5_ -options_file ex47-opt.yml -prefix_pop
        args: -prefix_push p5_ -options_file ex47-opt.yml:yaml -prefix_pop
        args: -prefix_push p6_ -options_file_yaml ex47-opt.yml -prefix_pop
        args: -prefix_push p7_ -options_string_yaml "`cat ex47-opt.yml`" -prefix_pop
        args: -prefix_push p7_ -options_string_yaml "`cat ex47-opt.yml`" -prefix_pop
        args: -prefix_push p8_ -options_string_yaml "`cat ex47-opt.yml`" -prefix_pop
        args: -prefix_push p9_ -options_file ex47-opt.json -prefix_pop
        localrunfiles: ex47-opt.txt ex47-opt.yml ex47-opt.json

   testset:
     nsize: {{1 2}}

     test:
        suffix: 3_empty
        args: -yaml ex47-empty.yaml
        localrunfiles: ex47-empty.yaml

     test:
        suffix: 3_merge
        args: -yaml ex47-merge.yaml -monitor
        localrunfiles: ex47-merge.yaml

     test:
        suffix: 3_options
        args: -yaml ex47-options.yaml
        localrunfiles: ex47-options.yaml

     test:
        suffix: 3_include
        args: -yaml ex47-include.yaml
        localrunfiles: ex47-include.yaml ex47-empty.yaml ex47-options.yaml

     test:
        suffix: 3_prefix
        args: -yaml ex47-prefix.yaml
        localrunfiles: ex47-prefix.yaml

     test:
        suffix: 3_multidoc
        args: -yaml ex47-multidoc.yaml
        localrunfiles: ex47-multidoc.yaml

TEST*/