/**
* Copyright 2005-2007 ECMWF
* 
* Licensed under the GNU Lesser General Public License which
* incorporates the terms and conditions of version 3 of the GNU
* General Public License.
* See LICENSE and gpl-3.0.txt for details.
*/

/*
 * C Implementation: grib_info
 *
 * Description:
 *
 *
 * Author: Enrico Fucile <enrico.fucile@ecmwf.int>
 *
 *
 */

#include "grib_tools.h"

void usage( char*);

#define INFO_PRINT_ALL                0
#define INFO_PRINT_VERSION           (1<<0)
#define INFO_PRINT_DEFINITION_PATH   (1<<1)
#define INFO_PRINT_SAMPLES_PATH     (1<<2)

int main( int argc,char* argv[]) {
  char* path=NULL;
  int c=0;
  int nfiles=0;
  unsigned long print_flags=0;
  int major=GRIB_API_MAJOR_VERSION;
  int minor=GRIB_API_MINOR_VERSION;
  int revision=GRIB_API_REVISION_VERSION;

  while (1) {

    c = getopt (argc, argv, "vdt");

    if (c == -1)
      break;

    switch (c) {
      case 'v':
        print_flags|=INFO_PRINT_VERSION;
        break;
      case 'd':
        print_flags|=INFO_PRINT_DEFINITION_PATH;
        break;
      case 't':
        print_flags|=INFO_PRINT_SAMPLES_PATH;
        break;
      default:
        usage(argv[0]);
    }
  }

  nfiles=argc-optind;
  if (nfiles != 0) usage(argv[0]);

  if (print_flags ==  INFO_PRINT_ALL) {
    printf("\n");
    printf("grib_api Version %d.%d.%d",
      major,minor,revision);
    if (GRIB_API_MAJOR_VERSION < 1) printf(" PRE-RELEASE");
    printf("\n");
    printf("\n");


    if ((path=getenv("GRIB_DEFINITION_PATH")) != NULL) {
      printf("Definition files path from environment variable");
      printf(" GRIB_DEFINITION_PATH=%s\n",path);
    } else {
      printf("Default definition files path is used: %s\n",GRIB_DEFINITION_PATH);
      printf("Definition files path can be changed setting GRIB_DEFINITION_PATH environment variable\n");
    }
    printf("\n");

    if ((path=getenv("GRIB_SAMPLES_PATH")) != NULL) {
      printf("SAMPLES path from environment variable");
      printf(" GRIB_SAMPLES_PATH=%s\n",path);
    } else {
      printf("Default SAMPLES path is used: %s\n",GRIB_SAMPLES_PATH);
      printf("SAMPLES path can be changed setting GRIB_SAMPLES_PATH environment variable\n");
    }
    printf("\n");
    return 0;
  }

  if (print_flags & INFO_PRINT_VERSION)
    printf("%d.%d.%d ",major,minor,revision);

  if (print_flags & INFO_PRINT_DEFINITION_PATH) {
    if ((path=getenv("GRIB_DEFINITION_PATH")) != NULL) {
      printf("%s",path);
    } else {
      printf("%s",GRIB_DEFINITION_PATH);
    }
  }

  if (print_flags & INFO_PRINT_SAMPLES_PATH) {
    if ((path=getenv("GRIB_SAMPLES_PATH")) != NULL) {
      printf("%s",path);
    } else {
      printf("%s",GRIB_SAMPLES_PATH);
    }
  }

  return 0;
}



void usage(char* progname) {
  printf("\nUsage: %s [-v] [-d] [-t]\n",progname);
  exit(1);
}