Adding "find" to ex17 extra credit

lcthw-remnants-2/ex17-ec.c

@@ -152,6 +152,23 @@ void Database_list(struct Connection *conn)
   }
 }
 
+void Database_find(struct Connection *conn, char *search)
+{
+  int i = 0;
+  struct Database *db = conn->db;
+
+  for(i = 0; i < MAX_ROWS; i++) {
+    struct Address *cur = &db->rows[i];
+
+    if(cur->set) {
+      if(strstr(cur->email, search) != NULL ||
+          strstr(cur->name, search) != NULL) {
+        Address_print(cur);
+      }
+    }
+  }
+}
+
 int main(int argc, char *argv[])
 {
   char usage[64];
@@ -193,11 +210,16 @@ int main(int argc, char *argv[])
       Database_write(conn);
       break;
 
+    case 'f':
+      if(argc != 4) die("Need something to find", conn);
+      Database_find(conn, argv[3]);
+      break;
+
     case 'l':
       Database_list(conn);
       break;
     default:
-      die("Invalid action, only: c=create, g=get, s=set, d=del, l=list", conn);
+      die("Invalid action, only: c=create, g=get, s=set, d=del, l=list, f=find", conn);
   }
 
   Database_close(conn);