/*!
** \file error.c
** \ingroup (PSIO)
*/

#include <stdio.h>
#include <stdlib.h>
#include "psio.h"
#include <psifiles.h>

/*!
** \ingroup (PSIO)
**
** PSIO_ERROR(): Print out an error message for libpsio.
**
** \param unit   = file number
** \param errval = error code (defined symbolically, PSIO_ERROR_XXX)
**
*/
void psio_error(unsigned int unit, unsigned int errval)
{
  int i;

  fprintf(stderr, "PSIO_ERROR: unit = %d\n", unit);
  /* Try to save the TOCs for all open units */
  /* psio_tocwrite() does not call psio_error() so this is OK */
  for(i=0; i < PSIO_MAXUNIT; i++) psio_tocwrite(i);

  switch(errval) {
  case PSIO_ERROR_INIT:
      fprintf(stderr, "PSIO_ERROR: %d (I/O inititalization failed)\n",
	      PSIO_ERROR_INIT);
      break;
  case PSIO_ERROR_DONE:
      fprintf(stderr, "PSIO_ERROR: %d (I/O cleanup failed)\n",
	      PSIO_ERROR_DONE);
      break;
  case PSIO_ERROR_MAXVOL:
      fprintf(stderr, "PSIO_ERROR: %d (maximum number of volumes exceeded)\n",
	      PSIO_ERROR_MAXVOL);
      break;
  case PSIO_ERROR_NOVOLPATH:
      fprintf(stderr, "PSIO_ERROR: %d (no volume path given)\n",
	      PSIO_ERROR_NOVOLPATH);
      break;
  case PSIO_ERROR_IDENTVOLPATH:
      fprintf(stderr, "PSIO_ERROR: %d (two identical volume paths)\n",
              PSIO_ERROR_IDENTVOLPATH);
      break;
  case PSIO_ERROR_OPEN:
      fprintf(stderr, "PSIO_ERROR: %d (file not open or open call failed)\n",
	      PSIO_ERROR_OPEN);
      break;
  case PSIO_ERROR_REOPEN:
      fprintf(stderr, "PSIO_ERROR: %d (file is already open)\n",
	      PSIO_ERROR_REOPEN);
      break;
  case PSIO_ERROR_CLOSE:
      fprintf(stderr, "PSIO_ERROR: %d (file close failed)\n",
	      PSIO_ERROR_CLOSE);
      break;
  case PSIO_ERROR_RECLOSE:
      fprintf(stderr, "PSIO_ERROR: %d (file is already closed)\n",
	      PSIO_ERROR_RECLOSE);
      break;
  case PSIO_ERROR_OSTAT:
      fprintf(stderr, "PSIO_ERROR: %d (invalid status flag for file open)\n",
	      PSIO_ERROR_OSTAT);
      break;
  case PSIO_ERROR_LSEEK:
      fprintf(stderr, "PSIO_ERROR: %d (lseek failed)\n",
	      PSIO_ERROR_LSEEK);
      break;
  case PSIO_ERROR_NOTOCENT:
      fprintf(stderr, "PSIO_ERROR: %d (no such TOC entry)\n",
	      PSIO_ERROR_NOTOCENT);
      break;
  case PSIO_ERROR_TOCENTSZ:
      fprintf(stderr, "PSIO_ERROR: %d (TOC entry size mismatch)\n",
	      PSIO_ERROR_TOCENTSZ);
      break;
  case PSIO_ERROR_KEYLEN:
      fprintf(stderr, "PSIO_ERROR: %d (TOC key too long)\n",
	      PSIO_ERROR_KEYLEN);
      break;
  case PSIO_ERROR_BLKSIZ:
      fprintf(stderr, "PSIO_ERROR: %d (Requested blocksize invalid)\n",
	      PSIO_ERROR_BLKSIZ);
      break;
  case PSIO_ERROR_BLKSTART:
      fprintf(stderr, "PSIO_ERROR: %d (Incorrect block start address)\n",
	      PSIO_ERROR_BLKSTART);
      break;
  case PSIO_ERROR_BLKEND:
      fprintf(stderr, "PSIO_ERROR: %d (Incorrect block end address)\n",
	      PSIO_ERROR_BLKEND);
      break;
    }
  exit(PSI_RETURN_FAILURE);
}
