diff options
Diffstat (limited to 'cmd-line-utils/readline/undo.c')
| -rw-r--r-- | cmd-line-utils/readline/undo.c | 91 |
1 files changed, 80 insertions, 11 deletions
diff --git a/cmd-line-utils/readline/undo.c b/cmd-line-utils/readline/undo.c index 4d256f492b8..9d9bd25ba8f 100644 --- a/cmd-line-utils/readline/undo.c +++ b/cmd-line-utils/readline/undo.c @@ -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. @@ -22,7 +22,9 @@ 59 Temple Place, Suite 330, Boston, MA 02111 USA. */ #define READLINE_LIBRARY -#include "config_readline.h" +#if defined (HAVE_CONFIG_H) +# include <config.h> +#endif #include <sys/types.h> @@ -48,6 +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; @@ -64,19 +68,35 @@ UNDO_LIST *rl_undo_list = (UNDO_LIST *)NULL; /* */ /* **************************************************************** */ -/* 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; } @@ -85,9 +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) @@ -96,6 +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 @@ -159,6 +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); @@ -175,7 +237,7 @@ _rl_fix_last_undo_of_type (type, start, end) for (rl = rl_undo_list; rl; rl = rl->next) { - if (rl->what == (unsigned int) type) + if (rl->what == type) { rl->start = start; rl->end = end; @@ -226,7 +288,8 @@ rl_modifying (start, end) /* Revert the current line to its previous state. */ int -rl_revert_line (int count __attribute__((unused)), int key __attribute__((unused))) +rl_revert_line (count, key) + int count, key; { if (!rl_undo_list) rl_ding (); @@ -234,13 +297,19 @@ rl_revert_line (int count __attribute__((unused)), int key __attribute__((unuse { while (rl_undo_list) rl_do_undo (); +#if defined (VI_MODE) + if (rl_editing_mode == vi_mode) + rl_point = rl_mark = 0; /* rl_end should be set correctly */ +#endif } + return 0; } /* Do some undoing of things that were done. */ int -rl_undo_command (int count, int key __attribute__((unused))) +rl_undo_command (count, key) + int count, key; { if (count < 0) return 0; /* Nothing to do. */ |