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Imported from ../bash-3.2.tar.gz.

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This commit is contained in:
Jari Aalto 2006-10-10 14:15:34 +00:00
commit 0628567a28
182 changed files with 17647 additions and 9477 deletions
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74
lib/readline/undo.c
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@ -1,7 +1,7 @@
/* 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, 1989, 1992, 2006 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.
@ -50,6 +50,8 @@
#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;
@ -66,6 +68,24 @@ UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL;
/* */
/* **************************************************************** */
static UNDO_LIST *
alloc_undo_entry (what, start, end, text)
enum undo_code what;
int start, end;
char *text;
{
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
@ -74,11 +94,9 @@ rl_add_undo (what, start, end, text)
int start, end;
char *text;
{
UNDO_LIST *temp = (UNDO_LIST *)xmalloc (sizeof (UNDO_LIST));
temp->what = what;
temp->start = start;
temp->end = end;
temp->text = text;
UNDO_LIST *temp;
temp = alloc_undo_entry (what, start, end, text);
temp->next = rl_undo_list;
rl_undo_list = temp;
}
@ -87,9 +105,12 @@ rl_add_undo (what, start, end, text)
void
rl_free_undo_list ()
{
UNDO_LIST *release, *orig_list;
orig_list = rl_undo_list;
while (rl_undo_list)
{
UNDO_LIST *release = rl_undo_list;
release = rl_undo_list;
rl_undo_list = rl_undo_list->next;
if (release->what == UNDO_DELETE)
@ -98,6 +119,43 @@ rl_free_undo_list ()
free (release);
}
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;
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
@ -161,6 +219,8 @@ rl_do_undo ()
release = rl_undo_list;
rl_undo_list = rl_undo_list->next;
replace_history_data (-1, (histdata_t *)release, (histdata_t *)rl_undo_list);
free (release);
}
while (waiting_for_begin);