Adding upstream version 3:4.8.30.upstream/3%4.8.30

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

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;
+}
+
+/* --------------------------------------------------------------------------------------------- */