summaryrefslogtreecommitdiff
path: root/src/cut.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/cut.c')
-rw-r--r--src/cut.c291
1 files changed, 291 insertions, 0 deletions
diff --git a/src/cut.c b/src/cut.c
new file mode 100644
index 0000000..8c21c8e
--- /dev/null
+++ b/src/cut.c
@@ -0,0 +1,291 @@
+/* $Id: cut.c 4453 2009-12-02 03:36:22Z astyanax $ */
+/**************************************************************************
+ * cut.c *
+ * *
+ * Copyright (C) 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, *
+ * 2008, 2009 Free Software Foundation, Inc. *
+ * This program 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, or (at your option) *
+ * any later version. *
+ * *
+ * This program 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. *
+ * *
+ * You should have received a copy of the GNU General Public License *
+ * along with this program; if not, write to the Free Software *
+ * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA *
+ * 02110-1301, USA. *
+ * *
+ **************************************************************************/
+
+#include "proto.h"
+
+#include <string.h>
+#include <stdio.h>
+
+static bool keep_cutbuffer = FALSE;
+ /* Should we keep the contents of the cutbuffer? */
+ /* Pointer to the end of the cutbuffer. */
+
+/* Indicate that we should no longer keep the contents of the
+ * cutbuffer. */
+void cutbuffer_reset(void)
+{
+ keep_cutbuffer = FALSE;
+}
+
+/* If we aren't on the last line of the file, move all the text of the
+ * current line, plus the newline at the end, into the cutbuffer. If we
+ * are, move all of the text of the current line into the cutbuffer. In
+ * both cases, set the current place we want to the beginning of the
+ * current line. */
+void cut_line(void)
+{
+ if (openfile->current != openfile->filebot)
+ move_to_filestruct(&cutbuffer, &cutbottom, openfile->current, 0,
+ openfile->current->next, 0);
+ else
+ move_to_filestruct(&cutbuffer, &cutbottom, openfile->current, 0,
+ openfile->current, strlen(openfile->current->data));
+ openfile->placewewant = 0;
+}
+
+#ifndef NANO_TINY
+/* Move all currently marked text into the cutbuffer, and set the
+ * current place we want to where the text used to start. */
+void cut_marked(void)
+{
+ filestruct *top, *bot;
+ size_t top_x, bot_x;
+
+ mark_order((const filestruct **)&top, &top_x,
+ (const filestruct **)&bot, &bot_x, NULL);
+
+ move_to_filestruct(&cutbuffer, &cutbottom, top, top_x, bot, bot_x);
+ openfile->placewewant = xplustabs();
+}
+
+/* If we aren't at the end of the current line, move all the text from
+ * the current cursor position to the end of the current line, not
+ * counting the newline at the end, into the cutbuffer. If we are, and
+ * we're not on the last line of the file, move the newline at the end
+ * into the cutbuffer, and set the current place we want to where the
+ * newline used to be. */
+void cut_to_eol(void)
+{
+ size_t data_len = strlen(openfile->current->data);
+
+ assert(openfile->current_x <= data_len);
+
+ if (openfile->current_x < data_len)
+ /* If we're not at the end of the line, move all the text from
+ * the current position up to it, not counting the newline at
+ * the end, into the cutbuffer. */
+ move_to_filestruct(&cutbuffer, &cutbottom, openfile->current,
+ openfile->current_x, openfile->current, data_len);
+ else if (openfile->current != openfile->filebot) {
+ /* If we're at the end of the line, and it isn't the last line
+ * of the file, move all the text from the current position up
+ * to the beginning of the next line, i.e. the newline at the
+ * end, into the cutbuffer. */
+ move_to_filestruct(&cutbuffer, &cutbottom, openfile->current,
+ openfile->current_x, openfile->current->next, 0);
+ openfile->placewewant = xplustabs();
+ }
+}
+
+/* Move all the text from the current cursor position to the end of the
+ * file into the cutbuffer. */
+void cut_to_eof(void)
+{
+ move_to_filestruct(&cutbuffer, &cutbottom, openfile->current,
+ openfile->current_x, openfile->filebot,
+ strlen(openfile->filebot->data));
+}
+#endif /* !NANO_TINY */
+
+/* Move text from the current filestruct into the cutbuffer. If
+ * copy_text is TRUE, copy the text back into the filestruct afterward.
+ * If cut_till_end is TRUE, move all text from the current cursor
+ * position to the end of the file into the cutbuffer. */
+void do_cut_text(
+#ifndef NANO_TINY
+ bool copy_text, bool cut_till_end, bool undoing
+#else
+ void
+#endif
+ )
+{
+#ifndef NANO_TINY
+ filestruct *cb_save = NULL;
+ /* The current end of the cutbuffer, before we add text to
+ * it. */
+ size_t cb_save_len = 0;
+ /* The length of the string at the current end of the cutbuffer,
+ * before we add text to it. */
+ bool old_no_newlines = ISSET(NO_NEWLINES);
+#endif
+
+ assert(openfile->current != NULL && openfile->current->data != NULL);
+
+ /* If keep_cutbuffer is FALSE and the cutbuffer isn't empty, blow
+ * away the text in the cutbuffer. */
+ if (!keep_cutbuffer && cutbuffer != NULL) {
+ free_filestruct(cutbuffer);
+ cutbuffer = NULL;
+#ifdef DEBUG
+ fprintf(stderr, "Blew away cutbuffer =)\n");
+#endif
+ }
+
+#ifndef NANO_TINY
+ if (copy_text) {
+ if (cutbuffer != NULL) {
+ /* If the cutbuffer isn't empty, save where it currently
+ * ends. This is where we'll add the new text. */
+ cb_save = cutbottom;
+ cb_save_len = strlen(cutbottom->data);
+ }
+
+ /* Set NO_NEWLINES to TRUE, so that we don't disturb the last
+ * line of the file when moving text to the cutbuffer. */
+ SET(NO_NEWLINES);
+ }
+#endif
+
+ /* Set keep_cutbuffer to TRUE, so that the text we're going to move
+ * into the cutbuffer will be added to the text already in the
+ * cutbuffer instead of replacing it. */
+ keep_cutbuffer = TRUE;
+
+#ifndef NANO_TINY
+
+ if (cut_till_end) {
+ /* If cut_till_end is TRUE, move all text up to the end of the
+ * file into the cutbuffer. */
+ cut_to_eof();
+ } else if (openfile->mark_set) {
+ /* If the mark is on, move the marked text to the cutbuffer, and
+ * turn the mark off. */
+ cut_marked();
+ openfile->mark_set = FALSE;
+ } else if (ISSET(CUT_TO_END))
+ /* If the CUT_TO_END flag is set, move all text up to the end of
+ * the line into the cutbuffer. */
+ cut_to_eol();
+ else
+#endif
+ /* Move the entire line into the cutbuffer. */
+ cut_line();
+
+#ifndef NANO_TINY
+ if (copy_text) {
+ /* Copy the text in the cutbuffer, starting at its saved end if
+ * there is one, back into the filestruct. This effectively
+ * uncuts the text we just cut without marking the file as
+ * modified. */
+ if (cutbuffer != NULL) {
+ if (cb_save != NULL) {
+ cb_save->data += cb_save_len;
+ copy_from_filestruct(cb_save, cutbottom);
+ cb_save->data -= cb_save_len;
+ } else
+ copy_from_filestruct(cutbuffer, cutbottom);
+
+ /* Set the current place we want to where the text from the
+ * cutbuffer ends. */
+ openfile->placewewant = xplustabs();
+ }
+
+ /* Set NO_NEWLINES back to what it was before, since we're done
+ * disturbing the text. */
+ if (!old_no_newlines)
+ UNSET(NO_NEWLINES);
+ } else if (!undoing)
+ update_undo(CUT);
+#endif
+ /* Leave the text in the cutbuffer, and mark the file as
+ * modified. */
+ set_modified();
+
+ /* Update the screen. */
+ edit_refresh_needed = TRUE;
+
+#ifdef ENABLE_COLOR
+ reset_multis(openfile->current, FALSE);
+#endif
+
+#ifdef DEBUG
+ dump_filestruct(cutbuffer);
+#endif
+}
+
+/* Move text from the current filestruct into the cutbuffer. */
+void do_cut_text_void(void)
+{
+#ifndef NANO_TINY
+ add_undo(CUT);
+#endif
+ do_cut_text(
+#ifndef NANO_TINY
+ FALSE, FALSE, FALSE
+#endif
+ );
+}
+
+#ifndef NANO_TINY
+/* Move text from the current filestruct into the cutbuffer, and copy it
+ * back into the filestruct afterward. */
+void do_copy_text(void)
+{
+ do_cut_text(TRUE, FALSE, FALSE);
+}
+
+/* Cut from the current cursor position to the end of the file. */
+void do_cut_till_end(void)
+{
+#ifndef NANO_TINY
+ add_undo(CUT);
+#endif
+ do_cut_text(FALSE, TRUE, FALSE);
+}
+#endif /* !NANO_TINY */
+
+/* Copy text from the cutbuffer into the current filestruct. */
+void do_uncut_text(void)
+{
+ assert(openfile->current != NULL && openfile->current->data != NULL);
+
+ /* If the cutbuffer is empty, get out. */
+ 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);
+
+ /* Set the current place we want to where the text from the
+ * cutbuffer ends. */
+ openfile->placewewant = xplustabs();
+
+ /* Mark the file as modified. */
+ set_modified();
+
+ /* Update the screen. */
+ edit_refresh_needed = TRUE;
+
+#ifdef ENABLE_COLOR
+ reset_multis(openfile->current, FALSE);
+#endif
+
+#ifdef DEBUG
+ dump_filestruct_reverse();
+#endif
+}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-24 10:14:51 +0000