summaryrefslogtreecommitdiffstats
path: root/lib/hook.c
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--lib/hook.c133
1 files changed, 133 insertions, 0 deletions
diff --git a/lib/hook.c b/lib/hook.c
new file mode 100644
index 0000000..c67d75c
--- /dev/null
+++ b/lib/hook.c
@@ -0,0 +1,133 @@
+/*
+ Hooks.
+
+ Slavaz: Warning! this file is deprecated and should be replaced
+ by mcevents functional.
+
+ Copyright (C) 1994-2023
+ Free Software Foundation, Inc.
+
+ Written by:
+ Miguel de Icaza, 1994, 1995, 1996
+ Janne Kukonlehto, 1994, 1995, 1996
+ Dugan Porter, 1994, 1995, 1996
+ Jakub Jelinek, 1994, 1995, 1996
+ Mauricio Plaza, 1994, 1995, 1996
+
+ This file is part of the Midnight Commander.
+
+ The Midnight Commander is free software: you can redistribute it
+ and/or modify it under the terms of the GNU General Public License as
+ published by the Free Software Foundation, either version 3 of the License,
+ or (at your option) any later version.
+
+ The Midnight Commander 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 General Public License for more details.
+
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+/** \file
+ * \brief Source: hooks
+ */
+
+#include <config.h>
+
+#include "lib/global.h"
+#include "lib/hook.h"
+
+/*** global variables ****************************************************************************/
+
+/*** file scope macro definitions ****************************************************************/
+
+/*** file scope type declarations ****************************************************************/
+
+/*** file scope variables ************************************************************************/
+
+/*** file scope functions ************************************************************************/
+
+/* --------------------------------------------------------------------------------------------- */
+/*** public functions ****************************************************************************/
+/* --------------------------------------------------------------------------------------------- */
+
+void
+add_hook (hook_t ** hook_list, void (*hook_fn) (void *), void *data)
+{
+ hook_t *new_hook = g_new (hook_t, 1);
+
+ new_hook->hook_fn = hook_fn;
+ new_hook->next = *hook_list;
+ new_hook->hook_data = data;
+
+ *hook_list = new_hook;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+execute_hooks (hook_t * hook_list)
+{
+ hook_t *new_hook = NULL;
+ hook_t *p;
+
+ /* We copy the hook list first so tahat we let the hook
+ * function call delete_hook
+ */
+
+ while (hook_list != NULL)
+ {
+ add_hook (&new_hook, hook_list->hook_fn, hook_list->hook_data);
+ hook_list = hook_list->next;
+ }
+ p = new_hook;
+
+ while (new_hook != NULL)
+ {
+ new_hook->hook_fn (new_hook->hook_data);
+ new_hook = new_hook->next;
+ }
+
+ for (hook_list = p; hook_list != NULL;)
+ {
+ p = hook_list;
+ hook_list = hook_list->next;
+ g_free (p);
+ }
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+void
+delete_hook (hook_t ** hook_list, void (*hook_fn) (void *))
+{
+ hook_t *new_list = NULL;
+ hook_t *current, *next;
+
+ for (current = *hook_list; current != NULL; current = next)
+ {
+ next = current->next;
+ if (current->hook_fn == hook_fn)
+ g_free (current);
+ else
+ add_hook (&new_list, current->hook_fn, current->hook_data);
+ }
+ *hook_list = new_list;
+}
+
+/* --------------------------------------------------------------------------------------------- */
+
+gboolean
+hook_present (hook_t * hook_list, void (*hook_fn) (void *))
+{
+ hook_t *p;
+
+ for (p = hook_list; p != NULL; p = p->next)
+ if (p->hook_fn == hook_fn)
+ return TRUE;
+ return FALSE;
+}
+
+/* --------------------------------------------------------------------------------------------- */