tests: Adding a usage function.

Signed-off-by: José Bollo <jose.bollo@open.eurogiciel.org>

diff --git a/tests/generator.c b/tests/generator.c
index c57720e..0efeda8 100644 (file)
--- a/tests/generator.c
+++ b/tests/generator.c
@@ -274,6 +274,20 @@ int pick_obj_label(struct label *labels, int nlab, int max_reoccurance, int *sub
        return idx;
 }
 
+/* displays the usage */
+void usage()
+{
+       fprintf(stderr,
+               "usage: gen [[lLrumi]=VALUE]... (where VALUE is a number >= 0)\n"
+               "      l: number of labels in policy, l>0\n"
+               "      L: maximal number of each label reoccurance in policy, L>0\n"
+               "      u: number of unique rules (rules with different subject,object pair), u>0\n"
+               "      m: number of merges per each unique rule, m>=0\n"
+               "      r: number of different rights generated randomly, r>0\n"
+               "      i: i=0: generate labels, i>0: read labels from stdio, 0 by default\n"
+       );
+}
+
 /* main */
 int main(int argc, char **argv)
 {
@@ -303,14 +317,7 @@ int main(int argc, char **argv)
                        case 'i': lab_stdin = n; break;
                        }
                } else {
-                       fprintf(stderr, "usage: gen [[lLrumi]=VALUE]... (where VALUE is a number >= 0)\n");
-                       fprintf(stderr, "      l: number of labels in policy, l>0\n");
-                       fprintf(stderr, "      L: maximal number of each label reoccurance in policy, L>0\n");
-                       fprintf(stderr, "      u: number of unique rules (rules with different subject,object pair), u>0\n");
-                       fprintf(stderr, "      m: number of merges per each unique rule, m>=0\n");
-                       fprintf(stderr, "      r: number of different rights generated randomly, r>0\n");
-                       fprintf(stderr, "      i: i=0: generate labels, i>0: read labels from stdio, 0 by default\n");
-
+                       usage();
                        exit(1);
                }
        }