src/automaton.c

   1 /*
   2  * Sylpheed -- a GTK+ based, lightweight, and fast e-mail client
   3  * Copyright (C) 1999,2000 Hiroyuki Yamamoto
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation; either version 2 of the License, or
   8  * (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  18  */
  19
  20 #include <glib.h>
  21 #include <gdk/gdk.h>
  22 #include <gtk/gtkmain.h>
  23
  24 #include "automaton.h"
  25
  26 Automaton *automaton_create(gint num)
  27 {
  28         Automaton *atm;
  29
  30         g_return_val_if_fail(num > 0, NULL);
  31
  32         atm = g_new0(Automaton, 1);
  33         atm->max = num - 1;
  34         atm->state = g_new0(AtmState, num);
  35
  36         return atm;
  37 }
  38
  39 void automaton_destroy(Automaton *atm)
  40 {
  41         if (!atm) return;
  42
  43         g_free(atm->state);
  44         g_free(atm);
  45 }
  46
  47 void automaton_input_cb(gpointer data, gint dummy_source,
  48                         GdkInputCondition condition)
  49 {
  50         Automaton *atm = (Automaton *)data;
  51         SockInfo *sock;
  52         gint next;
  53
  54         /* We get out sockinfo from the atm context and not from the
  55          * passed file descriptor because we can't map that one back
  56          * to the sockinfo */
  57         sock = atm->help_sock;
  58         g_assert(sock->sock == dummy_source);
  59
  60         if (atm->timeout_tag > 0) {
  61                 gtk_timeout_remove(atm->timeout_tag);
  62                 atm->timeout_tag = 0;
  63                 atm->elapsed = 0;
  64         }
  65         gdk_input_remove(atm->tag);
  66         atm->tag = 0;
  67
  68         next = atm->state[atm->num].handler(sock, atm->data);
  69
  70         if (atm->terminated)
  71                 return;
  72
  73         if (next >= 0 && next <= atm->max && next != atm->num) {
  74                 atm->num = next;
  75                 atm->tag = sock_gdk_input_add(sock,
  76                                          atm->state[atm->num].condition,
  77                                          automaton_input_cb,
  78                                          data);
  79         } else {
  80                 atm->terminate(sock, data);
  81         }
  82 }