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can-utils
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Added optional filename argument to -l option

pull/345/head
xR3b0rn 2022-02-15 16:49:38 +01:00 committed by GitHub
parent ec6a573de1
commit 9b5dbdc430
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 22 additions and 10 deletions
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32
candump.c
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@ -134,7 +134,7 @@ static void print_usage(char *prg)
fprintf(stderr, " -a (enable additional ASCII output)\n");
fprintf(stderr, " -S (swap byte order in printed CAN data[] - marked with '%c' )\n", SWAP_DELIMITER);
fprintf(stderr, " -s <level> (silent mode - %d: off (default) %d: animation %d: silent)\n", SILENT_OFF, SILENT_ANI, SILENT_ON);
fprintf(stderr, " -l (log CAN-frames into file. Sets '-s %d' by default)\n", SILENT_ON);
fprintf(stderr, " -l <fname> (log CAN-frames into file. Sets '-s %d' by default)\n", SILENT_ON);
fprintf(stderr, " -L (use log file format on stdout)\n");
fprintf(stderr, " -n <count> (terminate after reception of <count> CAN frames)\n");
fprintf(stderr, " -r <size> (set socket receive buffer to <size>)\n");
@ -314,6 +314,7 @@ int main(int argc, char **argv)
struct timeval tv, last_tv;
int timeout_ms = -1; /* default to no timeout */
FILE *logfile = NULL;
const char *log_filename = NULL;
signal(SIGTERM, sigterm);
signal(SIGHUP, sigterm);
@ -321,8 +322,8 @@ int main(int argc, char **argv)
last_tv.tv_sec = 0;
last_tv.tv_usec = 0;
while ((opt = getopt(argc, argv, "t:HciaSs:lDdxLn:r:he8T:?")) != -1) {
while ((opt = getopt(argc, argv, "t:HciaSs:l::DdxLn:r:he8T:?")) != -1) {
switch (opt) {
case 't':
timestamp = optarg[0];
@ -376,6 +377,7 @@ int main(int argc, char **argv)
case 'l':
log = 1;
log_filename = optarg;
break;
case 'D':
@ -662,13 +664,23 @@ int main(int argc, char **argv)
localtime_r(&currtime, &now);
sprintf(fname, "candump-%04d-%02d-%02d_%02d%02d%02d.log",
now.tm_year + 1900,
now.tm_mon + 1,
now.tm_mday,
now.tm_hour,
now.tm_min,
now.tm_sec);
if (!log_filename) {
sprintf(fname, "candump-%04d-%02d-%02d_%02d%02d%02d.log",
now.tm_year + 1900,
now.tm_mon + 1,
now.tm_mday,
now.tm_hour,
now.tm_min,
now.tm_sec);
} else {
int len = strlen(fname);
if (len > sizeof(fname) - 1) {
fprintf(stderr, "fname of -l argument must not exceed %d characters\n", sizeof(fname) - 1);
return 1;
}
memcpy(fname, log_filename, len);
fname[len] = 0;
}
if (silent != SILENT_ON)
fprintf(stderr, "Warning: Console output active while logging!\n");