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jsfmesgtype.c
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jsfmesgtype.c
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/*************************************
*
*
* jsfmesgtype
*
* List the ET jsf file message types and number of occurances
* Reflects jsf format 0004824_REV_1.18
*
* Tom O'Brien
* USGS
* Woods Hole, MA
*
* September 11, 2017
*
*
*************************************/
#include <stdio.h>
#include <fcntl.h>
#include <ctype.h>
#include <sys/types.h>
#include <netinet/in.h>
#include <unistd.h>
#include <string.h>
#include <stdlib.h>
#include "jsf2.h"
int
main (int argc, char *argv[])
{ /* START MAIN */
int in_fd; /* file descriptor */
int JSFmsgSize;
int inbytes;
int msg;
int Sonar = 0;
int Sidescan = 0;
int Pitch = 0;
int NMEA = 0;
int Press = 0;
int Analog = 0;
int Doppler = 0;
int Situation = 0;
int SitII = 0;
int SAS = 0;
int S_info = 0;
int Cable = 0;
off_t offset; /* offset for seeking starting record */
off_t where;
unsigned char *JSFmsg;
JSFmsgSize = 16;
char *progname;
progname = argv[0];
if ((argc - optind) < 1)
usage ();
/*
* open the input jsf file
*/
if ((in_fd = open (argv[optind], O_RDONLY)) == -1)
{
fprintf (stderr, "%s: cannot open %s\n", argv[optind], progname);
perror ("open");
err_exit ();
}
/*
* Get some memory for JSF header
*/
JSFmsg =
(unsigned char *) calloc ((size_t) JSFmsgSize, sizeof (unsigned char));
if (JSFmsg == 0)
fprintf (stdout, "Error callocing\n");
while (1)
{
inbytes = read (in_fd, JSFmsg, (size_t) JSFmsgSize);
if (inbytes == ZERO)
{
fprintf (stdout, "End of File reached in input file\n");
if (Sonar)
fprintf (stdout, "Sonar = %d ", Sonar);
if (Sidescan)
fprintf (stdout, " Sidescan = %d ", Sidescan);
if (Pitch)
fprintf (stdout, " Pitch = %d ", Pitch);
if (NMEA)
fprintf (stdout, " NMEA = %d ", NMEA);
if (Press)
fprintf (stdout, " Pressure = %d ", Press);
if (Analog)
fprintf (stdout, " Analog = %d ", Analog);
if (Doppler)
fprintf (stdout, " Doppler = %d ", Doppler);
if (Situation)
fprintf (stdout, " Situation = %d ", Situation);
if (SAS)
fprintf (stdout, " SAS = %d ", SAS);
if (S_info)
fprintf (stdout, " S_info = %d ", S_info);
if (Cable)
fprintf (stdout, " Cable = %d ", Cable);
if (SitII)
fprintf (stdout, " DII Situation = %d ", SitII);
fprintf (stdout, "\n");
exit (EXIT_SUCCESS);
} // End if
if (inbytes != (int) JSFmsgSize)
{
fprintf (stderr, "%s: error reading JSF message header\n",
progname);
perror ("read");
err_exit ();
}
if (get_short (JSFmsg, 0) != 0x1601)
{
fprintf (stdout, "Invalid file format\n");
err_exit ();
}
msg = (int) get_short (JSFmsg, 4);
switch (msg)
{
case 80:
Sonar++;
break;
case 82:
Sidescan++;
break;
case 2020:
Pitch++;
break;
case 2002:
NMEA++;
break;
case 2060:
Press++;
break;
case 2040:
Analog++;
break;
case 2080:
Doppler++;
break;
case 2091:
Situation++;
break;
case 86:
SAS++;
break;
case 182:
S_info++;
break;
case 2100:
Cable++;
break;
case 9002:
SitII++;
break;
case '?':
err_exit ();
break;
} // End switch
/*
* Skip to next JSF Headeer
*/
offset = (off_t) get_int (JSFmsg, 12);
where = lseek (in_fd, offset, SEEK_CUR);
} // End while()
} // End Main()
void
err_exit (void)
{
fprintf (stdout, "An error occured \n");
exit (EXIT_FAILURE);
}
void
usage (void)
{
fprintf (stdout,
"jsfmesgtype ... Lists Edgetech JSF message types within a file\n");
fprintf (stdout, "Usage: jsfmesgtype full path to input file name\n");
exit (EXIT_FAILURE);
}