int main(int argc, char **argv)
{
struct arg_xxx *scalar = arg_xxx1(NULL, NULL, "<scalar>", 0.0, 1.0, "<double> value in range [0.0, 1.0]");
struct arg_xxx *x = arg_xxx0("x", NULL, "<double>", -1.0, 1.0, "x coeff in range [-1.0, 1.0]");
struct arg_xxx *y = arg_xxxn("y", NULL, "<double>", 0,argc+2, 0.5, 0.9, "y coeff in range [0.5, 0.9]");
struct arg_lit *help = arg_lit0(NULL,"help", "print this help and exit");
struct arg_end *end = arg_end(20);
void* argtable[] = {scalar,x,y,help,end};
const char* progname = "argcustom";
int nerrors;
int exitcode=0;
int i;
/* verify the argtable[] entries were allocated sucessfully */
if (arg_nullcheck(argtable) != 0)
{
/* NULL entries were detected, some allocations must have failed */
printf("%s: insufficient memory\n",progname);
exitcode=1;
goto exit;
}
/* Parse the command line as defined by argtable[] */
nerrors = arg_parse(argc,argv,argtable);
/* special case: '--help' takes precedence over error reporting */
if (help->count > 0)
{
printf("Usage: %s", progname);
arg_print_syntax(stdout,argtable,"\n");
printf("This program demonstrates the use of the argtable2 library\n");
printf("for parsing command line arguments.\n");
arg_print_glossary(stdout,argtable," %-25s %s\n");
exitcode=0;
goto exit;
}
/* If the parser returned any errors then display them and exit */
if (nerrors > 0)
{
/* Display the error details contained in the arg_end struct.*/
arg_print_errors(stdout,end,progname);
printf("Try '%s --help' for more information.\n",progname);
exitcode=1;
goto exit;
}
/* only get here is command line arguments were parsed sucessfully */
printf("scalar = %f\n", scalar->data[0]);
if (x->count > 0)
printf("x = %f\n", x->data[0]);
for (i=0; i<y->count; i++)
printf("y[%d] = %f\n", i, y->data[i]);
exit:
/* deallocate each non-null entry in argtable[] */
arg_freetable(argtable,sizeof(argtable)/sizeof(argtable[0]));
return exitcode;
}
struct arg_xxx* arg_xxx1(const char* shortopts,
const char* longopts,
const char *datatype,
double minvalue,
double maxvalue,
const char *glossary)
{
return arg_xxxn(shortopts,longopts,datatype,1,1,minvalue,maxvalue,glossary);
}
