example_entrypoint.c

Simple example showing the path entry-point feature.

/*                         _
 *   ___  __ _  __ _ _   _(_)
 *  / __|/ _` |/ _` | | | | |
 *  \__ \ (_| | (_| | |_| | |
 *  |___/\__,_|\__, |\__,_|_|
 *             |___/
 *
 * Cross-platform library which helps to develop web servers or frameworks.
 *
 * Copyright (C) 2016-2019 Silvio Clecio <silvioprog@gmail.com>
 *
 * Sagui library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * Sagui library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with Sagui library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
 */
 
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <sagui.h>
 
/* NOTE: Error checking has been omitted to make it clear. */
 
static void r1_route_cb(void *cls, struct sg_route *route) {
  fprintf(stdout, "%s: %s\n", sg_route_path(route), (const char *) cls);
  fflush(stdout);
}
 
static void r2_route_cb(void *cls, struct sg_route *route) {
  fprintf(stdout, "%s: %s\n", sg_route_path(route), (const char *) cls);
  fflush(stdout);
}
 
int main(void) {
  struct sg_router *r1, *r2;
  struct sg_route *rts1 = NULL, *rts2 = NULL;
  struct sg_entrypoints *entrypoints;
  struct sg_entrypoint *entrypoint;
  sg_routes_add(&rts1, "/foo", r1_route_cb, "r1-foo-data");
  sg_routes_add(&rts1, "/bar", r1_route_cb, "r1-bar-data");
  r1 = sg_router_new(rts1);
  sg_routes_add(&rts2, "/foo", r2_route_cb, "r2-foo-data");
  sg_routes_add(&rts2, "/bar", r2_route_cb, "r2-bar-data");
  r2 = sg_router_new(rts2);
 
  entrypoints = sg_entrypoints_new();
  sg_entrypoints_add(entrypoints, "/r1", r1);
  sg_entrypoints_add(entrypoints, "/r2", r2);
 
  sg_entrypoints_find(entrypoints, &entrypoint, "/r1/foo");
  sg_router_dispatch(sg_entrypoint_user_data(entrypoint), "/foo", NULL);
  sg_entrypoints_find(entrypoints, &entrypoint, "/r1/bar");
  sg_router_dispatch(sg_entrypoint_user_data(entrypoint), "/bar", NULL);
  sg_entrypoints_find(entrypoints, &entrypoint, "/r2/foo");
  sg_router_dispatch(sg_entrypoint_user_data(entrypoint), "/foo", NULL);
  sg_entrypoints_find(entrypoints, &entrypoint, "/r2/bar");
  sg_router_dispatch(sg_entrypoint_user_data(entrypoint), "/bar", NULL);
 
  sg_routes_cleanup(&rts1);
  sg_routes_cleanup(&rts2);
  sg_router_free(r1);
  sg_router_free(r2);
  sg_entrypoints_free(entrypoints);
  return EXIT_SUCCESS;
}