test_options.c

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#include "options.h"
 
 
 
struct params {
        int a_int;
        double a_double;
        const char * file;
        int algo;
};
 
 
struct option_alternative alt[4] = { 
   {"PLICP", 3, "a new algorithm"}, 
   {"ICP",   4, "the standard"}, 
   {"MbICP", 5, "good for rotations"}, {0,0,0}
};
 
int main(int argc, const char*argv[]) {
        options_banner("This is a test program for the options library.");
        
        struct params p;
        
        struct option* ops = options_allocate(3);
        options_int    (ops, "i", &p.a_int,  42, "An int parameter");
        options_double (ops, "d", &p.a_double,  0.42, "A double parameter");
        options_string (ops, "s", &p.file ,  "Hello", "A file parameter");
        options_alternative(ops, "algorith", alt, &p.algo, "which algorithm to use" );
        
        
        if(!options_parse_args(ops, argc, argv)) {
                printf("A simple program.\n\nUsage:\n");
                options_print_help(ops, stderr);
                return -1;
        }
        
        printf("i: %d \n", p.a_int);
        printf("d: %g \n", p.a_double);
        printf("s: %s \n", p.file);
        
        return 0;
}