Hi Guys
Thanks for your wonderful tool, I use it all the time.
I've been hitting a problem while combining several rrds into a single
graph, for example:
300 rrds, 14 datasources in each.. and combining them all
basically 100's if not 1000's of arguements
The problem is that the shell was hitting a length limit!
My solution - write args to text file (1 per line) and pass the filename as
the arg and read them in from the text file..
I'm not sure I did it in a great way but it works and could be useful if
anyone comes across this problem too. Code:
I renamed the original main() to rrdmain() and made a new main which calls
rrdmain() after it has read the args from the file:
int main (int argc, char **argv[]) {
FILE*fp ;
int i;
char line[1600];
char** myargv;
char* carriage;
if (argc > 2 && strcmp("file", argv[1]) == 0) {
fp = fopen ( argv[2],"r" ) ;
if( fp == NULL )
{
puts ( "cannot open file" ) ;
return 0;
}
i = 0;
while(!feof(fp))
{
i++;
memset(line,'\0',1600);
fgets(line,1600,fp);
//printf("line %s", line);
}
fclose(fp);
myargv = calloc(i, sizeof(char*));
fp = fopen ( argv[2],"r" ) ;
i=0;
while(!feof(fp))
{
fgets(line,1600,fp);
carriage = strrchr(line, '\n');
if (carriage != NULL) { *carriage = 0; }
myargv[i] = strdup(line);
printf("line %s", line);
i++;
}
fclose(fp);
rrdmain(i, myargv);
}
else {
rrdmain(argc, argv);
}
}
int rrdmain(
int argc,
char **argv[])
{ //original main follows unmodified
again, it's not great but it got me past the limitation and maybe you can
use the idea in future versions
Cheers,
Richard
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