X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=readline%2Fundo.c;h=eb042b29fd966e7261a8735f9709fc9627beec57;hb=128e85e3ab36b8e30f6612fb50de3cbb4ede6824;hp=f7f30d17d9d8dc48d99e7c4e50069d04e647933d;hpb=f9267e152c9c4e2b150366c590674180e66d45df;p=deliverable%2Fbinutils-gdb.git diff --git a/readline/undo.c b/readline/undo.c index f7f30d17d9..eb042b29fd 100644 --- a/readline/undo.c +++ b/readline/undo.c @@ -1,25 +1,25 @@ /* 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) 1987-2009 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 . +*/ + #define READLINE_LIBRARY #if defined (HAVE_CONFIG_H) @@ -48,8 +48,9 @@ #include "history.h" #include "rlprivate.h" +#include "xmalloc.h" -#define SWAP(s, e) do { int t; t = s; s = e; e = t; } while (0) +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. */ @@ -67,38 +68,97 @@ 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; } /* Free the existing undo list. */ void -free_undo_list () +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) - free (release->text); + xfree (release->text); - free (release); + xfree (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; + + 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 @@ -107,17 +167,18 @@ int rl_do_undo () { UNDO_LIST *release; - int waiting_for_begin = 0; - int start, end; + int waiting_for_begin, start, end; #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; + RL_SETSTATE(RL_STATE_UNDOING); /* To better support vi-mode, a start or end value of -1 means rl_point, and a value of -2 means rl_end. */ @@ -133,7 +194,7 @@ rl_do_undo () 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. */ @@ -152,15 +213,18 @@ rl_do_undo () if (waiting_for_begin) waiting_for_begin--; else - ding (); + rl_ding (); break; } _rl_doing_an_undo = 0; + RL_UNSETSTATE(RL_STATE_UNDOING); release = rl_undo_list; rl_undo_list = rl_undo_list->next; - free (release); + replace_history_data (-1, (histdata_t *)release, (histdata_t *)rl_undo_list); + + xfree (release); } while (waiting_for_begin); @@ -230,13 +294,18 @@ int rl_revert_line (count, key) int count, key; { - if (!rl_undo_list) - ding (); + if (rl_undo_list == 0) + rl_ding (); else { 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; } @@ -254,7 +323,7 @@ rl_undo_command (count, key) count--; else { - ding (); + rl_ding (); break; } }