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/* $Id$ */
#include <sys/types.h>
#ifndef S_SPLINT_S
#include <unistd.h>
#endif /* S_SPLINT_S */
#include <stdlib.h>
#include <string.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdarg.h>
#include <stdbool.h>
#include <ctype.h>
#include "gpsd_config.h"
#include "gpsd.h"
#include "gps_json.h"
static int verbose = 0;
static bool scaled = true;
static bool json = false;
/**************************************************************************
*
* Generic machinery
*
**************************************************************************/
void gpsd_report(int errlevel, const char *fmt, ... )
/* assemble command in printf(3) style, use stderr or syslog */
{
if (errlevel <= verbose) {
char buf[BUFSIZ];
va_list ap;
(void)strlcpy(buf, "gpsdecode: ", BUFSIZ);
va_start(ap, fmt) ;
(void)vsnprintf(buf + strlen(buf), sizeof(buf)-strlen(buf), fmt, ap);
va_end(ap);
(void)fputs(buf, stdout);
}
}
/*@ -compdestroy -compdef -usedef @*/
static void decode(FILE *fpin, FILE *fpout)
/* RTCM or AIS packets on fpin to dump format on fpout */
{
struct gps_packet_t lexer;
struct rtcm2_t rtcm2;
struct rtcm3_t rtcm3;
struct aivdm_context_t aivdm;
char buf[BUFSIZ];
packet_reset(&lexer);
while (packet_get(fileno(fpin), &lexer) > 0) {
if (lexer.type == COMMENT_PACKET)
continue;
else if (lexer.type == RTCM2_PACKET) {
rtcm2_unpack(&rtcm2, (char *)lexer.isgps.buf);
if (json)
rtcm2_json_dump(&rtcm2, buf, sizeof(buf));
else
rtcm2_sager_dump(&rtcm2, buf, sizeof(buf));
(void)fputs(buf, fpout);
}
else if (lexer.type == RTCM3_PACKET) {
rtcm3_unpack(&rtcm3, (char *)lexer.outbuffer);
rtcm3_dump(&rtcm3, stdout);
}
else if (lexer.type == AIVDM_PACKET) {
/*@ -uniondef */
if (aivdm_decode((char *)lexer.outbuffer, lexer.outbuflen, &aivdm)){
aivdm_dump(&aivdm.decoded, scaled, json, buf, sizeof(buf));
(void)fputs(buf, fpout);
(void)fputs("\n", fpout);
}
/*@ +uniondef */
}
}
}
/*@ +compdestroy +compdef +usedef @*/
/*@ -compdestroy @*/
static void encode(FILE *fpin, bool repack, FILE *fpout)
/* dump format on fpin to RTCM-104 on fpout */
{
char inbuf[BUFSIZ];
struct gps_data_t gpsdata;
int lineno = 0;
memset(&gpsdata, '\0', sizeof(gpsdata)); /* avoid segfault due to garbage in thread-hook slots */
while (fgets(inbuf, (int)sizeof(inbuf), fpin) != NULL) {
int status;
++lineno;
if (inbuf[0] == '#')
continue;
status = gps_unpack(inbuf, &gpsdata);
if (status < 0) {
(void) fprintf(stderr, "gpsdecode: bailing out with status %d on line %d\n", status, lineno);
exit(1);
} if ((gpsdata.set & RTCM2_SET) != 0) {
if (repack) {
// FIXME: This code is presently broken
struct gps_packet_t lexer;
(void)memset(lexer.isgps.buf, 0, sizeof(lexer.isgps.buf));
(void)rtcm2_repack(&gpsdata.rtcm2, lexer.isgps.buf);
if (fwrite(lexer.isgps.buf,
sizeof(isgps30bits_t),
(size_t)gpsdata.rtcm2.length, fpout) != (size_t)gpsdata.rtcm2.length)
(void) fprintf(stderr, "gpsdecode: report write failed.\n");
memset(&lexer, 0, sizeof(lexer));
} else {
/* this works */
char outbuf[BUFSIZ];
rtcm2_json_dump(&gpsdata.rtcm2, outbuf, sizeof(outbuf));
(void)fputs(outbuf, fpout);
}
}
}
}
/*@ +compdestroy @*/
int main(int argc, char **argv)
{
int c;
enum {doencode, dodecode} mode = dodecode;
while ((c = getopt(argc, argv, "dejpuVD:")) != EOF) {
switch (c) {
case 'd':
mode = dodecode;
break;
case 'e':
mode = doencode;
break;
case 'j':
json = true;
break;
case 'u':
scaled = false;
break;
case 'D':
verbose = atoi(optarg);
gpsd_hexdump_level = verbose;
break;
case 'V':
(void)fprintf(stderr, "SVN ID: $Id$ \n");
exit(0);
case '?':
default:
(void)fputs("gpsdecode [-v]\n", stderr);
exit(1);
}
}
argc -= optind;
argv += optind;
if (mode == doencode)
encode(stdin, !json, stdout);
else
decode(stdin, stdout);
exit(0);
}
/* gpsdecode.c ends here */
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