swfdec/swfdec_function_list.c

   1 /* Swfdec
   2  * Copyright (C) 2008 Benjamin Otte <otte@gnome.org>
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin Street, Fifth Floor,
  17  * Boston, MA  02110-1301  USA
  18  */
  19
  20 #ifdef HAVE_CONFIG_H
  21 #include "config.h"
  22 #endif
  23
  24 #include <string.h>
  25 #include "swfdec_function_list.h"
  26
  27 typedef struct _SwfdecFunctionListEntry SwfdecFunctionListEntry;
  28 struct _SwfdecFunctionListEntry {
  29   GFunc                 func;
  30   gpointer              data;
  31   GDestroyNotify        destroy;
  32 };
  33
  34 void
  35 swfdec_function_list_clear (SwfdecFunctionList *list)
  36 {
  37   GList *walk;
  38
  39   g_return_if_fail (list != NULL);
  40
  41   for (walk = list->list; walk; walk = walk->next) {
  42     SwfdecFunctionListEntry *entry = walk->data;
  43     if (entry->destroy)
  44       entry->destroy (entry->data);
  45     g_slice_free (SwfdecFunctionListEntry, entry);
  46   }
  47   g_list_free (list->list);
  48   list->list = NULL;
  49 }
  50
  51 void
  52 swfdec_function_list_add (SwfdecFunctionList *list, GFunc func,
  53     gpointer data, GDestroyNotify destroy)
  54 {
  55   SwfdecFunctionListEntry *entry;
  56
  57   g_return_if_fail (list != NULL);
  58   g_return_if_fail (func);
  59
  60   entry = g_slice_new (SwfdecFunctionListEntry);
  61   entry->func = func;
  62   entry->data = data;
  63   entry->destroy = destroy;
  64
  65   list->list = g_list_append (list->list, entry);
  66 }
  67
  68 static int
  69 swfdec_function_list_entry_compare (gconstpointer a, gconstpointer b)
  70 {
  71   a = ((const SwfdecFunctionListEntry *) a)->data;
  72   b = ((const SwfdecFunctionListEntry *) b)->data;
  73
  74   if (a < b)
  75     return -1;
  76   if (a > b)
  77     return 1;
  78   return 0;
  79 }
  80
  81 void
  82 swfdec_function_list_remove (SwfdecFunctionList *list, gpointer data)
  83 {
  84   SwfdecFunctionListEntry entry = { NULL, data, NULL };
  85   SwfdecFunctionListEntry *e;
  86   GList *node;
  87
  88   g_return_if_fail (list != NULL);
  89
  90   node = g_list_find_custom (list->list, &entry,
  91       swfdec_function_list_entry_compare);
  92   e = node->data;
  93   if (e->destroy)
  94     e->destroy (data);
  95   g_slice_free (SwfdecFunctionListEntry, e);
  96   list->list = g_list_delete_link (list->list, node);
  97 }
  98
  99 void
 100 swfdec_function_list_execute (SwfdecFunctionList *list, gpointer data)
 101 {
 102   SwfdecFunctionListEntry *entry;
 103   GList *walk;
 104
 105   g_return_if_fail (list != NULL);
 106
 107   for (walk = list->list; walk; walk = walk->next) {
 108     entry = walk->data;
 109     entry->func (entry->data, data);
 110   }
 111 }
 112
 113 void
 114 swfdec_function_list_execute_and_clear (SwfdecFunctionList *list, gpointer data)
 115 {
 116   SwfdecFunctionListEntry *entry;
 117   GList *old, *walk;
 118
 119   g_return_if_fail (list != NULL);
 120
 121   old = list->list;
 122   list->list = NULL;
 123   for (walk = old; walk; walk = walk->next) {
 124     entry = walk->data;
 125     entry->func (entry->data, data);
 126     if (entry->destroy)
 127       entry->destroy (entry->data);
 128     g_slice_free (SwfdecFunctionListEntry, entry);
 129   }
 130   g_list_free (old);
 131 }
 132