/*
 * Copyright 2005-2013 ECMWF.
 *
 * This software is licensed under the terms of the Apache Licence Version 2.0
 * which can be obtained at http://www.apache.org/licenses/LICENSE-2.0.
 *
 * In applying this licence, ECMWF does not waive the privileges and immunities granted to it by
 * virtue of its status as an intergovernmental organisation nor does it submit to any jurisdiction.
 */

#include "grib_api_internal.h"

void usage(char* prog) {
	printf("usage: %s infile1 infile2 ... \n",prog);
	exit(1);
}

static int check_file(FILE* in,long *count) {
	void* mesg=NULL;
	size_t size=0;
	off_t offset=0;
	int err=0;
	grib_context* c=grib_context_get_default();

	if (!in) return 1;

	while ( (mesg=wmo_read_any_from_file_malloc ( in,0,  &size,&offset,&err))!=NULL && err==GRIB_SUCCESS) {
		grib_context_free(c,mesg);
		(*count)++;
	}

	if (err==GRIB_END_OF_FILE) err=GRIB_SUCCESS;

	return err;
}

int main(int argc,char* argv[]) {

	FILE* infh;
	char* filename;
	int i;
	int err=0;
	long n=0,nn=0;

	if (argc <2) usage(argv[0]);

	n=0;
	for (i=1;i<argc;i++) {
		filename=argv[i];

		infh=fopen(filename,"r");
		if (!infh) {
			perror(filename);
			exit(1);
		}

		nn=0;
		err=check_file(infh,&nn);
		if (err!=0) {
			fprintf(stderr,"Invalid grib message(s) found in %s\n", filename);
			exit(err);
		}
		n+=nn;

		fclose(infh);
	}
	printf("%ld\n",n);

	return 0;
}