mirror of
https://github.com/MidnightCommander/mc
synced 2024-12-23 12:56:51 +03:00
126 lines
3.8 KiB
C
126 lines
3.8 KiB
C
/* Hooks
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Copyright (C) 1994, 1995, 1996, 1998, 1999, 2000, 2001, 2002, 2003,
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2004, 2005, 2007, 2009, 2010 Free Software Foundation, Inc.
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Written 1994, 1995, 1996 by:
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Miguel de Icaza, Janne Kukonlehto, Dugan Porter,
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Jakub Jelinek, Mauricio Plaza.
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The file_date routine is mostly from GNU's fileutils package,
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written by Richard Stallman and David MacKenzie.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */
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/** \file
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* \brief Source: hooks
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*/
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#include <config.h>
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#include "lib/global.h"
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#include "lib/hook.h"
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/*** global variables ****************************************************************************/
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/*** file scope macro definitions ****************************************************************/
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/*** file scope type declarations ****************************************************************/
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/*** file scope variables ************************************************************************/
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/*** file scope functions ************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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/*** public functions ****************************************************************************/
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/* --------------------------------------------------------------------------------------------- */
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void
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add_hook (hook_t ** hook_list, void (*hook_fn) (void *), void *data)
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{
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hook_t *new_hook = g_new (hook_t, 1);
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new_hook->hook_fn = hook_fn;
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new_hook->next = *hook_list;
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new_hook->hook_data = data;
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*hook_list = new_hook;
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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execute_hooks (hook_t * hook_list)
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{
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hook_t *new_hook = NULL;
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hook_t *p;
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/* We copy the hook list first so tahat we let the hook
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* function call delete_hook
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*/
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while (hook_list != NULL)
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{
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add_hook (&new_hook, hook_list->hook_fn, hook_list->hook_data);
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hook_list = hook_list->next;
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}
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p = new_hook;
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while (new_hook != NULL)
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{
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new_hook->hook_fn (new_hook->hook_data);
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new_hook = new_hook->next;
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}
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for (hook_list = p; hook_list != NULL;)
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{
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p = hook_list;
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hook_list = hook_list->next;
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g_free (p);
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}
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}
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/* --------------------------------------------------------------------------------------------- */
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void
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delete_hook (hook_t ** hook_list, void (*hook_fn) (void *))
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{
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hook_t *new_list = NULL;
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hook_t *current, *next;
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for (current = *hook_list; current != NULL; current = next)
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{
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next = current->next;
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if (current->hook_fn == hook_fn)
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g_free (current);
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else
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add_hook (&new_list, current->hook_fn, current->hook_data);
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}
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*hook_list = new_list;
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}
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/* --------------------------------------------------------------------------------------------- */
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gboolean
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hook_present (hook_t * hook_list, void (*hook_fn) (void *))
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{
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hook_t *p;
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for (p = hook_list; p != NULL; p = p->next)
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if (p->hook_fn == hook_fn)
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return TRUE;
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return FALSE;
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}
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/* --------------------------------------------------------------------------------------------- */
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