MtkTimeRangeToOrbitList.c

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/*===========================================================================
=                                                                           =
=                         MtkTimeRangeToOrbitList                           =
=                                                                           =
=============================================================================

                         Jet Propulsion Laboratory
                                   MISR
                               MISR Toolkit

            Copyright 2005, California Institute of Technology.
                           ALL RIGHTS RESERVED.
                 U.S. Government Sponsorship acknowledged.

============================================================================*/

#include "MisrOrbitPath.h"
#include "MisrError.h"
#include <stdlib.h>

MTKt_status MtkTimeRangeToOrbitList(
  const char *start_time, 
  const char *end_time, 
  int *orbitcnt, 
  int **orbitlist  )
{
  MTKt_status status;       /* Return status */
  MTKt_status status_code;      /* Return code of this function */
  int start_orbit;
  int start_path;
  int end_orbit;
  int end_path;
  int *list = NULL;
  int i;

  if (start_time == NULL || end_time == NULL ||
      orbitcnt == NULL || orbitlist == NULL)
    MTK_ERR_CODE_JUMP(MTK_NULLPTR);

  /* Find start orbit */
  status = MtkTimeToOrbitPath(start_time,&start_orbit,&start_path);
  if (status == MTK_BAD_ARGUMENT)
  {
    status = MtkTimeToOrbitPath("2000-02-25T01:00:00Z",&start_orbit,&start_path);
    MTK_ERR_COND_JUMP(status);
  }
  else if (status != MTK_SUCCESS)
    MTK_ERR_CODE_JUMP(status)  

  /* Find end orbit */
  status = MtkTimeToOrbitPath(end_time,&end_orbit,&end_path);
  MTK_ERR_COND_JUMP(status);

  if (start_orbit > end_orbit)
    MTK_ERR_CODE_JUMP(MTK_BAD_ARGUMENT);

  *orbitcnt = end_orbit - start_orbit + 1;

  list = (int*)malloc(*orbitcnt * sizeof(int));
  if (list == NULL)
    MTK_ERR_CODE_JUMP(MTK_MALLOC_FAILED);

  for (i = 0; i < *orbitcnt; ++i)
    list[i] = start_orbit + i;

  *orbitlist = list;

  return MTK_SUCCESS;

 ERROR_HANDLE:
  return status_code;
}