commit b549f3761a0f15e9c565dafa879a3383c842b974
parent e137f12e5ef1df2f6305c9f87440d2156f514415
Author: Chris Allegretta <chrisa@asty.org>
Date: Tue, 16 Sep 2008 21:35:19 +0000
2008-09-16 Chris Allegretta <chrisa@asty.org>
* text.c: Add support for undoing a text uncut. Split out the undo and redo of a text cut
in order to avoid code duplication.
git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@4327 35c25a1d-7b9e-4130-9fde-d3aeb78583b8
Diffstat:
3 files changed, 102 insertions(+), 60 deletions(-)
diff --git a/ChangeLog b/ChangeLog
@@ -1,3 +1,6 @@
+2008-09-16 Chris Allegretta <chrisa@asty.org>
+ * text.c: Add support for undoing a text uncut. Split out the undo and redo of a text cut
+ in order to avoid code duplication.
2008-09-06 Chris Allegretta <chrisa@asty.org>
* nano.c: Do call disable_signals at startup regardless, since under cygwin we can't generate
^C without it.
diff --git a/src/cut.c b/src/cut.c
@@ -260,6 +260,10 @@ void do_uncut_text(void)
if (cutbuffer == NULL)
return;
+#ifndef NANO_TINY
+ update_undo(UNCUT);
+#endif
+
/* Add a copy of the text in the cutbuffer to the current filestruct
* at the current cursor position. */
copy_from_filestruct(cutbuffer, cutbottom);
diff --git a/src/text.c b/src/text.c
@@ -364,6 +364,70 @@ void do_unindent(void)
do_indent(-tabsize);
}
+/* undo a cut, or re-do an uncut */
+void undo_cut(undo *u)
+{
+ cutbuffer = copy_filestruct(u->cutbuffer);
+
+ /* Compute cutbottom for the uncut using out copy */
+ for (cutbottom = cutbuffer; cutbottom->next != NULL; cutbottom = cutbottom->next)
+ ;
+
+ /* Get to where we need to uncut from */
+ if (u->mark_set && u->mark_begin_lineno < u->lineno)
+ do_gotolinecolumn(u->mark_begin_lineno, u->mark_begin_x+1, FALSE, FALSE, FALSE, FALSE);
+ else
+ do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
+
+ copy_from_filestruct(cutbuffer, cutbottom);
+ free_filestruct(cutbuffer);
+ cutbuffer = NULL;
+
+}
+
+/* Re-do a cut, or undo an uncut */
+void redo_cut(undo *u) {
+ int i;
+ filestruct *t;
+
+ do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
+ openfile->mark_set = u->mark_set;
+ if (cutbuffer)
+ free(cutbuffer);
+ cutbuffer = NULL;
+
+ /* Move ahead the same # lines we had if a marked cut */
+ if (u->mark_set) {
+ for (i = 1, t = openfile->fileage; i != u->mark_begin_lineno; i++)
+ t = t->next;
+ openfile->mark_begin = t;
+ } else if (!u->to_end) {
+ /* Here we have a regular old potentially multi-line ^K cut. We'll
+ need to trick nano into thinking it's a marked cut to cut more
+ than one line again */
+#ifdef DEBUG
+ fprintf(stderr, "Undoing multi-^K cut, u->linescut = %d\n", u->linescut);
+#endif
+ for (i = 0, t = openfile->current; i < u->linescut; i++) {
+
+#ifdef DEBUG
+ fprintf(stderr, "Advancing, lineno = %d, data = \"%s\"\n", t->lineno, t->data);
+#endif
+ t = t->next;
+ }
+ openfile->mark_begin = t;
+ openfile->mark_begin_x = 0;
+ openfile->mark_set = TRUE;
+ }
+
+ openfile->mark_begin_x = u->mark_begin_x;
+ do_cut_text(FALSE, u->to_end, TRUE);
+ openfile->mark_set = FALSE;
+ openfile->mark_begin = NULL;
+ openfile->mark_begin_x = 0;
+ edit_refresh();
+}
+
/* Undo the last thing(s) we did */
void do_undo(void)
{
@@ -443,21 +507,11 @@ void do_undo(void)
case CUT:
case CUTTOEND:
undidmsg = _("text cut");
- cutbuffer = copy_filestruct(u->cutbuffer);
-
- /* Compute cutbottom for the uncut using out copy */
- for (cutbottom = cutbuffer; cutbottom->next != NULL; cutbottom = cutbottom->next)
- ;
-
- /* Get to where we need to uncut from */
- if (u->mark_set && u->mark_begin_lineno < u->lineno)
- do_gotolinecolumn(u->mark_begin_lineno, u->mark_begin_x+1, FALSE, FALSE, FALSE, FALSE);
- else
- do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
-
- do_uncut_text();
- free_filestruct(cutbuffer);
- cutbuffer = NULL;
+ undo_cut(u);
+ break;
+ case UNCUT:
+ undidmsg = _("text uncut");
+ redo_cut(u);
break;
case INSERT:
undidmsg = _("text insert");
@@ -576,43 +630,12 @@ void do_redo(void)
break;
case CUT:
case CUTTOEND:
- undidmsg = _("line cut");
- do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
- openfile->mark_set = u->mark_set;
- if (cutbuffer)
- free(cutbuffer);
- cutbuffer = NULL;
-
- /* Move ahead the same # lines we had if a marked cut */
- if (u->mark_set) {
- for (i = 1, t = openfile->fileage; i != u->mark_begin_lineno; i++)
- t = t->next;
- openfile->mark_begin = t;
- } else if (!u->to_end) {
- /* Here we have a regular old potentially multi-line ^K cut. We'll
- need to trick nano into thinking it's a marked cut to cut more
- than one line again */
-#ifdef DEBUG
- fprintf(stderr, "Undoing multi-^K cut, u->linescut = %d\n", u->linescut);
-#endif
- for (i = 0, t = openfile->current; i < u->linescut; i++) {
-
-#ifdef DEBUG
- fprintf(stderr, "Advancing, lineno = %d, data = \"%s\"\n", t->lineno, t->data);
-#endif
- t = t->next;
- }
- openfile->mark_begin = t;
- openfile->mark_begin_x = 0;
- openfile->mark_set = TRUE;
- }
-
- openfile->mark_begin_x = u->mark_begin_x;
- do_cut_text(FALSE, u->to_end, TRUE);
- openfile->mark_set = FALSE;
- openfile->mark_begin = NULL;
- openfile->mark_begin_x = 0;
- edit_refresh();
+ undidmsg = _("text cut");
+ redo_cut(u);
+ break;
+ case UNCUT:
+ undidmsg = _("text uncut");
+ undo_cut(u);
break;
case REPLACE:
undidmsg = _("text replace");
@@ -620,14 +643,11 @@ void do_redo(void)
u->strdata = f->data;
f->data = data;
break;
- case INSERT:
+ case INSERT:
undidmsg = _("text insert");
- cutbuffer = u->cutbuffer;
- cutbottom = u->cutbottom;
do_gotolinecolumn(u->lineno, u->begin+1, FALSE, FALSE, FALSE, FALSE);
- do_uncut_text();
- cutbuffer = oldcutbuffer;
- cutbottom = oldcutbottom;
+ copy_from_filestruct(u->cutbuffer, u->cutbottom);
+ openfile->placewewant = xplustabs();
break;
default:
undidmsg = _("Internal error: unknown type. Please save your work");
@@ -799,7 +819,7 @@ bool execute_command(const char *command)
/* Add a new undo struct to the top of the current pile */
void add_undo(undo_type current_action)
{
- undo *u;
+ undo *u, *cutu;
char *data;
openfilestruct *fs = openfile;
@@ -832,6 +852,7 @@ void add_undo(undo_type current_action)
u->strdata = NULL;
u->cutbuffer = NULL;
u->cutbottom = NULL;
+ u->mark_set = 0;
u->mark_begin_lineno = 0;
u->mark_begin_x = 0;
u->linescut = 0;
@@ -877,6 +898,20 @@ void add_undo(undo_type current_action)
u->to_end = (current_action == CUTTOEND);
break;
case UNCUT:
+ for (cutu = u; cutu != NULL && cutu->type != CUT; cutu = cutu->next)
+ ;
+ if (cutu->type == CUT) {
+ u->cutbuffer = cutu->cutbuffer;
+ u->cutbottom = cutu->cutbottom;
+ if (!cutu->mark_set)
+ u->linescut = cutu->linescut;
+ else {
+ filestruct *c;
+ for (c = u->cutbuffer; c != NULL; c = c->next)
+ u->linescut++;
+ }
+ } else
+ statusbar(_("Internal error: can't setup uncut. Please save your work."));
break;
case OTHER:
statusbar(_("Internal error: unknown type. Please save your work."));
@@ -981,7 +1016,6 @@ void update_undo(undo_type action)
break;
case CUT:
case CUTTOEND:
- case UNCUT:
if (u->cutbuffer)
free(u->cutbuffer);
u->cutbuffer = copy_filestruct(cutbuffer);
@@ -989,6 +1023,7 @@ void update_undo(undo_type action)
u->linescut++;
break;
case REPLACE:
+ case UNCUT:
add_undo(action);
break;
case INSERT:
