/* readline.c -- a general facility for reading lines of input
with emacs style editing and completion. */
-/* Copyright (C) 1987, 1989, 1992 Free Software Foundation, Inc.
+/* Copyright (C) 1987-2012 Free Software Foundation, Inc.
- This file is part of the GNU Readline Library, a library for
- reading lines of text with interactive input and history editing.
+ This file is part of the GNU Readline Library (Readline), a library
+ for reading lines of text with interactive input and history editing.
- The GNU Readline Library 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 2, or
+ Readline 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 GNU Readline Library 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
+ Readline 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.
- The GNU General Public License is often shipped with GNU software, and
- is generally kept in a file called COPYING or LICENSE. If you do not
- have a copy of the license, write to the Free Software Foundation,
- 59 Temple Place, Suite 330, Boston, MA 02111 USA. */
+ You should have received a copy of the GNU General Public License
+ along with Readline. If not, see <http://www.gnu.org/licenses/>.
+*/
+
#define READLINE_LIBRARY
#if defined (HAVE_CONFIG_H)
#include "rlprivate.h"
#include "xmalloc.h"
+extern void replace_history_data PARAMS((int, histdata_t *, histdata_t *));
+
/* Non-zero tells rl_delete_text and rl_insert_text to not add to
the undo list. */
int _rl_doing_an_undo = 0;
/* */
/* **************************************************************** */
-/* Remember how to undo something. Concatenate some undos if that
- seems right. */
-void
-rl_add_undo (what, start, end, text)
+static UNDO_LIST *
+alloc_undo_entry (what, start, end, text)
enum undo_code what;
int start, end;
char *text;
{
- UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
+ UNDO_LIST *temp;
+
+ temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
temp->what = what;
temp->start = start;
temp->end = end;
temp->text = text;
+
+ temp->next = (UNDO_LIST *)NULL;
+ return temp;
+}
+
+/* Remember how to undo something. Concatenate some undos if that
+ seems right. */
+void
+rl_add_undo (what, start, end, text)
+ enum undo_code what;
+ int start, end;
+ char *text;
+{
+ UNDO_LIST *temp;
+
+ temp = alloc_undo_entry (what, start, end, text);
temp->next = rl_undo_list;
rl_undo_list = temp;
}
-/* Free the existing undo list. */
+/* Free an UNDO_LIST */
void
-rl_free_undo_list ()
+_rl_free_undo_list (ul)
+ UNDO_LIST *ul;
{
- while (rl_undo_list)
+ UNDO_LIST *release;
+
+ while (ul)
{
- UNDO_LIST *release = rl_undo_list;
- rl_undo_list = rl_undo_list->next;
+ release = ul;
+ ul = ul->next;
if (release->what == UNDO_DELETE)
- free (release->text);
+ xfree (release->text);
- free (release);
+ xfree (release);
}
+}
+
+/* Free the existing undo list. */
+void
+rl_free_undo_list ()
+{
+ UNDO_LIST *release, *orig_list;
+
+ orig_list = rl_undo_list;
+ _rl_free_undo_list (rl_undo_list);
rl_undo_list = (UNDO_LIST *)NULL;
+ replace_history_data (-1, (histdata_t *)orig_list, (histdata_t *)NULL);
+}
+
+UNDO_LIST *
+_rl_copy_undo_entry (entry)
+ UNDO_LIST *entry;
+{
+ UNDO_LIST *new;
+
+ new = alloc_undo_entry (entry->what, entry->start, entry->end, (char *)NULL);
+ new->text = entry->text ? savestring (entry->text) : 0;
+ return new;
+}
+
+UNDO_LIST *
+_rl_copy_undo_list (head)
+ UNDO_LIST *head;
+{
+ UNDO_LIST *list, *new, *roving, *c;
+
+ if (head == 0)
+ return head;
+
+ list = head;
+ new = 0;
+ while (list)
+ {
+ c = _rl_copy_undo_entry (list);
+ if (new == 0)
+ roving = new = c;
+ else
+ {
+ roving->next = c;
+ roving = roving->next;
+ }
+ list = list->next;
+ }
+
+ roving->next = 0;
+ return new;
}
/* Undo the next thing in the list. Return 0 if there
{
UNDO_LIST *release;
int waiting_for_begin, start, end;
+ HIST_ENTRY *cur, *temp;
#define TRANS(i) ((i) == -1 ? rl_point : ((i) == -2 ? rl_end : (i)))
start = end = waiting_for_begin = 0;
do
{
- if (!rl_undo_list)
+ if (rl_undo_list == 0)
return (0);
_rl_doing_an_undo = 1;
case UNDO_DELETE:
rl_point = start;
rl_insert_text (rl_undo_list->text);
- free (rl_undo_list->text);
+ xfree (rl_undo_list->text);
break;
/* Undoing inserts means deleting some text. */
release = rl_undo_list;
rl_undo_list = rl_undo_list->next;
- free (release);
+
+ /* If we are editing a history entry, make sure the change is replicated
+ in the history entry's line */
+ cur = current_history ();
+ if (cur && cur->data && (UNDO_LIST *)cur->data == release)
+ {
+ temp = replace_history_entry (where_history (), rl_line_buffer, (histdata_t)rl_undo_list);
+ xfree (temp->line);
+ FREE (temp->timestamp);
+ xfree (temp);
+ }
+
+ replace_history_data (-1, (histdata_t *)release, (histdata_t *)rl_undo_list);
+
+ xfree (release);
}
while (waiting_for_begin);
rl_revert_line (count, key)
int count, key;
{
- if (!rl_undo_list)
+ if (rl_undo_list == 0)
rl_ding ();
else
{
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