mirror of git://git.sv.gnu.org/nano.git
3793 lines
100 KiB
C
3793 lines
100 KiB
C
/* $Id$ */
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/**************************************************************************
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* nano.c *
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* *
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* Copyright (C) 1999-2003 Chris Allegretta *
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* This program is free software; you can redistribute it and/or modify *
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* it under the terms of the GNU General Public License as published by *
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* the Free Software Foundation; either version 2, or (at your option) *
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* any later version. *
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* *
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* This program is distributed in the hope that it will be useful, *
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* but WITHOUT ANY WARRANTY; without even the implied warranty of *
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
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* GNU General Public License for more details. *
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* *
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* You should have received a copy of the GNU General Public License *
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* along with this program; if not, write to the Free Software *
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. *
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* *
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**************************************************************************/
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#include "config.h"
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#include <stdio.h>
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#include <stdlib.h>
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#include <stdarg.h>
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#include <signal.h>
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#include <setjmp.h>
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#include <unistd.h>
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#include <string.h>
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#include <fcntl.h>
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#include <sys/stat.h>
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#include <sys/ioctl.h>
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#include <sys/param.h>
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#include <sys/types.h>
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#include <sys/wait.h>
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#include <errno.h>
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#include <ctype.h>
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#include <locale.h>
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#include <limits.h>
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#include <assert.h>
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#include "proto.h"
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#include "nano.h"
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#ifdef HAVE_TERMIOS_H
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#include <termios.h>
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#endif
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#ifdef HAVE_TERMIO_H
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#include <termio.h>
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#endif
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#ifdef HAVE_GETOPT_H
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#include <getopt.h>
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#endif
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#ifndef DISABLE_WRAPJUSTIFY
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static int fill = 0; /* Fill - where to wrap lines, basically */
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#endif
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static struct termios oldterm; /* The user's original term settings */
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static struct sigaction act; /* For all our fun signal handlers */
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static sigjmp_buf jmpbuf; /* Used to return to mainloop after SIGWINCH */
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/* What we do when we're all set to exit */
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RETSIGTYPE finish(int sigage)
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{
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#ifndef NANO_SMALL
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#ifdef ENABLE_NANORC
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/* do here so errors about ./nano_history
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don't confuse user */
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if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG))
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save_history();
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#endif
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free_history(&search_history);
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free_history(&replace_history);
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#endif
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keypad(edit, TRUE);
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keypad(bottomwin, TRUE);
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if (!ISSET(NO_HELP)) {
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mvwaddstr(bottomwin, 1, 0, hblank);
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mvwaddstr(bottomwin, 2, 0, hblank);
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} else
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mvwaddstr(bottomwin, 0, 0, hblank);
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wrefresh(bottomwin);
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endwin();
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/* Restore the old term settings */
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tcsetattr(0, TCSANOW, &oldterm);
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#ifdef DEBUG
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thanks_for_all_the_fish();
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#endif
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exit(sigage);
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}
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/* Die (gracefully?) */
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void die(const char *msg, ...)
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{
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va_list ap;
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endwin();
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curses_ended = TRUE;
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/* Restore the old term settings */
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tcsetattr(0, TCSANOW, &oldterm);
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va_start(ap, msg);
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vfprintf(stderr, msg, ap);
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va_end(ap);
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/* save the currently loaded file if it's been modified */
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if (ISSET(MODIFIED))
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die_save_file(filename);
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#ifdef ENABLE_MULTIBUFFER
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/* then save all of the other modified loaded files, if any */
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if (open_files != NULL) {
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openfilestruct *tmp;
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tmp = open_files;
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while (open_files->prev != NULL)
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open_files = open_files->prev;
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while (open_files->next != NULL) {
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/* if we already saved the file above (i. e. if it was the
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currently loaded file), don't save it again */
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if (tmp != open_files) {
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/* make sure open_files->fileage and fileage, and
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open_files->filebot and filebot, are in sync; they
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might not be if lines have been cut from the top or
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bottom of the file */
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fileage = open_files->fileage;
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filebot = open_files->filebot;
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/* save the file if it's been modified */
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if (open_files->file_flags & MODIFIED)
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die_save_file(open_files->filename);
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}
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open_files = open_files->next;
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}
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}
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#endif
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exit(1); /* We have a problem: exit w/ errorlevel(1) */
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}
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void die_save_file(const char *die_filename)
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{
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char *ret;
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int i = -1;
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/* If we can't save, we have REAL bad problems, but we might as well
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TRY. */
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if (die_filename[0] == '\0')
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ret = get_next_filename("nano.save");
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else {
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char *buf = charalloc(strlen(die_filename) + 6);
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strcpy(buf, die_filename);
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strcat(buf, ".save");
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ret = get_next_filename(buf);
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free(buf);
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}
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if (ret[0] != '\0')
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i = write_file(ret, 1, 0, 0);
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if (i != -1)
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fprintf(stderr, _("\nBuffer written to %s\n"), ret);
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else
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fprintf(stderr, _("\nNo %s written (too many backup files?)\n"), ret);
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free(ret);
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}
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/* Die with an error message that the screen was too small if, well, the
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* screen is too small. */
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void die_too_small(void)
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{
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die(_("Window size is too small for nano...\n"));
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}
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void print_view_warning(void)
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{
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statusbar(_("Key illegal in VIEW mode"));
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}
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/* Initialize global variables - no better way for now. If
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* save_cutbuffer is nonzero, don't set cutbuffer to NULL. */
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void global_init(int save_cutbuffer)
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{
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current_x = 0;
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current_y = 0;
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editwinrows = LINES - 5 + no_help();
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if (editwinrows < MIN_EDITOR_ROWS || COLS < MIN_EDITOR_COLS)
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die_too_small();
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fileage = NULL;
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if (!save_cutbuffer)
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cutbuffer = NULL;
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current = NULL;
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edittop = NULL;
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editbot = NULL;
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totlines = 0;
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totsize = 0;
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placewewant = 0;
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#ifndef DISABLE_WRAPJUSTIFY
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fill = wrap_at;
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if (fill <= 0)
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fill += COLS;
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if (fill < 0)
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fill = 0;
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#endif
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hblank = charalloc(COLS + 1);
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memset(hblank, ' ', COLS);
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hblank[COLS] = '\0';
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}
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void window_init(void)
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{
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editwinrows = LINES - 5 + no_help();
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if (editwinrows < MIN_EDITOR_ROWS)
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die_too_small();
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if (edit != NULL)
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delwin(edit);
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if (topwin != NULL)
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delwin(topwin);
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if (bottomwin != NULL)
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delwin(bottomwin);
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/* Set up the main text window */
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edit = newwin(editwinrows, COLS, 2, 0);
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/* And the other windows */
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topwin = newwin(2, COLS, 0, 0);
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bottomwin = newwin(3 - no_help(), COLS, LINES - 3 + no_help(), 0);
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#ifdef PDCURSES
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/* Oops, I guess we need this again. Moved here so the keypad still
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works after a Meta-X, for example */
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keypad(edit, TRUE);
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keypad(bottomwin, TRUE);
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#endif
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}
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#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
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void mouse_init(void)
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{
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if (ISSET(USE_MOUSE)) {
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keypad_on(edit, 1);
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keypad_on(bottomwin, 1);
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mousemask(BUTTON1_RELEASED, NULL);
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mouseinterval(50);
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} else
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mousemask(0, NULL);
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}
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#endif
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#ifndef DISABLE_HELP
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/* This function allocates help_text, and stores the help string in it.
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* help_text should be NULL initially. */
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void help_init(void)
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{
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size_t allocsize = 1; /* space needed for help_text */
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char *ptr = NULL;
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#ifndef NANO_SMALL
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const toggle *t;
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#endif
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const shortcut *s;
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/* First set up the initial help text for the current function */
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if (currshortcut == whereis_list || currshortcut == replace_list
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|| currshortcut == replace_list_2)
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ptr = _("Search Command Help Text\n\n "
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"Enter the words or characters you would like to search "
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"for, then hit enter. If there is a match for the text you "
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"entered, the screen will be updated to the location of the "
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"nearest match for the search string.\n\n "
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"The previous search string will be shown in brackets after "
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"the Search: prompt. Hitting Enter without entering any text "
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"will perform the previous search.\n\n The following function "
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"keys are available in Search mode:\n\n");
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else if (currshortcut == goto_list)
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ptr = _("Go To Line Help Text\n\n "
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"Enter the line number that you wish to go to and hit "
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"Enter. If there are fewer lines of text than the "
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"number you entered, you will be brought to the last line "
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"of the file.\n\n The following function keys are "
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"available in Go To Line mode:\n\n");
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else if (currshortcut == insertfile_list)
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ptr = _("Insert File Help Text\n\n "
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"Type in the name of a file to be inserted into the current "
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"file buffer at the current cursor location.\n\n "
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"If you have compiled nano with multiple file buffer "
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"support, and enable multiple buffers with the -F "
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"or --multibuffer command line flags, the Meta-F toggle, or "
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"a nanorc file, inserting a file will cause it to be "
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"loaded into a separate buffer (use Meta-< and > to switch "
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"between file buffers).\n\n If you need another blank "
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"buffer, do not enter any filename, or type in a "
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"nonexistent filename at the prompt and press "
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"Enter.\n\n The following function keys are "
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"available in Insert File mode:\n\n");
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else if (currshortcut == writefile_list)
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ptr = _("Write File Help Text\n\n "
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"Type the name that you wish to save the current file "
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"as and hit Enter to save the file.\n\n If you have "
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"selected text with Ctrl-^, you will be prompted to "
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"save only the selected portion to a separate file. To "
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"reduce the chance of overwriting the current file with "
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"just a portion of it, the current filename is not the "
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"default in this mode.\n\n The following function keys "
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"are available in Write File mode:\n\n");
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#ifndef DISABLE_BROWSER
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else if (currshortcut == browser_list)
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ptr = _("File Browser Help Text\n\n "
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"The file browser is used to visually browse the "
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"directory structure to select a file for reading "
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"or writing. You may use the arrow keys or Page Up/"
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"Down to browse through the files, and S or Enter to "
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"choose the selected file or enter the selected "
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"directory. To move up one level, select the directory "
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"called \"..\" at the top of the file list.\n\n The "
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"following function keys are available in the file "
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"browser:\n\n");
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else if (currshortcut == gotodir_list)
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ptr = _("Browser Go To Directory Help Text\n\n "
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"Enter the name of the directory you would like to "
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"browse to.\n\n If tab completion has not been disabled, "
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"you can use the TAB key to (attempt to) automatically "
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"complete the directory name.\n\n The following function "
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"keys are available in Browser Go To Directory mode:\n\n");
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#endif
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#ifndef DISABLE_SPELLER
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else if (currshortcut == spell_list)
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ptr = _("Spell Check Help Text\n\n "
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"The spell checker checks the spelling of all text "
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"in the current file. When an unknown word is "
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"encountered, it is highlighted and a replacement can "
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"be edited. It will then prompt to replace every "
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"instance of the given misspelled word in the "
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"current file.\n\n The following other functions are "
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"available in Spell Check mode:\n\n");
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#endif
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#ifndef NANO_SMALL
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else if (currshortcut == extcmd_list)
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ptr = _("External Command Help Text\n\n "
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"This menu allows you to insert the output of a command "
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"run by the shell into the current buffer (or a new "
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"buffer in multibuffer mode).\n\n The following keys are "
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"available in this mode:\n\n");
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#endif
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else /* Default to the main help list */
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ptr = _(" nano help text\n\n "
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"The nano editor is designed to emulate the functionality and "
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"ease-of-use of the UW Pico text editor. There are four main "
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"sections of the editor: The top line shows the program "
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"version, the current filename being edited, and whether "
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"or not the file has been modified. Next is the main editor "
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"window showing the file being edited. The status line is "
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"the third line from the bottom and shows important messages. "
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"The bottom two lines show the most commonly used shortcuts "
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"in the editor.\n\n "
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"The notation for shortcuts is as follows: Control-key "
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"sequences are notated with a caret (^) symbol and are entered "
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"with the Control (Ctrl) key. Escape-key sequences are notated "
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"with the Meta (M) symbol and can be entered using either the "
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"Esc, Alt or Meta key depending on your keyboard setup. The "
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"following keystrokes are available in the main editor window. "
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"Alternative keys are shown in parentheses:\n\n");
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allocsize += strlen(ptr);
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/* The space needed for the shortcut lists, at most COLS characters,
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* plus '\n'. */
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allocsize += (COLS + 1) * length_of_list(currshortcut);
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#ifndef NANO_SMALL
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/* If we're on the main list, we also count the toggle help text.
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* Each line has "M-%c\t\t\t", which fills 24 columns, plus at most
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* COLS - 24 characters, plus '\n'.*/
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if (currshortcut == main_list) {
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size_t endislen = strlen(_("enable/disable"));
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for (t = toggles; t != NULL; t = t->next)
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allocsize += 8 + strlen(t->desc) + endislen;
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}
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#endif /* !NANO_SMALL */
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/* help_text has been freed and set to NULL unless the user resized
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* while in the help screen. */
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free(help_text);
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/* Allocate space for the help text */
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help_text = charalloc(allocsize);
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/* Now add the text we want */
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strcpy(help_text, ptr);
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ptr = help_text + strlen(help_text);
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/* Now add our shortcut info */
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for (s = currshortcut; s != NULL; s = s->next) {
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/* true if the character in s->altval is shown in first column */
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int meta_shortcut = 0;
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if (s->val > 0 && s->val < 32)
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ptr += sprintf(ptr, "^%c", s->val + 64);
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#ifndef NANO_SMALL
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else if (s->val == NANO_CONTROL_SPACE)
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ptr += sprintf(ptr, "^%.6s", _("Space"));
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else if (s->altval == NANO_ALT_SPACE) {
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meta_shortcut = 1;
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ptr += sprintf(ptr, "M-%.5s", _("Space"));
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} else if (s->val == KEY_UP)
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ptr += sprintf(ptr, "%.2s", _("Up"));
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#endif
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else if (s->altval > 0) {
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meta_shortcut = 1;
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ptr += sprintf(ptr, "M-%c", s->altval -
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(('A' <= s->altval && s->altval <= 'Z') ||
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'a' <= s->altval ? 32 : 0));
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}
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/* Hack */
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else if (s->val >= 'a') {
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meta_shortcut = 1;
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ptr += sprintf(ptr, "M-%c", s->val - 32);
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}
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*(ptr++) = '\t';
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if (s->misc1 > KEY_F0 && s->misc1 <= KEY_F(64))
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ptr += sprintf(ptr, "(F%d)", s->misc1 - KEY_F0);
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*(ptr++) = '\t';
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if (!meta_shortcut && s->altval > 0)
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ptr += sprintf(ptr, "(M-%c)", s->altval -
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(('A' <= s->altval && s->altval <= 'Z') || 'a' <= s->altval
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? 32 : 0));
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*(ptr++) = '\t';
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assert(s->help != NULL);
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ptr += sprintf(ptr, "%.*s\n", COLS > 24 ? COLS - 24 : 0, s->help);
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}
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#ifndef NANO_SMALL
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/* And the toggles... */
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if (currshortcut == main_list)
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for (t = toggles; t != NULL; t = t->next) {
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assert(t->desc != NULL);
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ptr += sprintf(ptr, "M-%c\t\t\t%s %s\n", t->val - 32, t->desc,
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_("enable/disable"));
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}
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#endif /* !NANO_SMALL */
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/* If all went well, we didn't overwrite the allocated space for
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help_text. */
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assert(strlen(help_text) < allocsize);
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}
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#endif
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/* Create a new filestruct node. Note that we specifically do not set
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* prevnode->next equal to the new line. */
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filestruct *make_new_node(filestruct *prevnode)
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{
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filestruct *newnode = (filestruct *)nmalloc(sizeof(filestruct));
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newnode->data = NULL;
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newnode->prev = prevnode;
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newnode->next = NULL;
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newnode->lineno = prevnode != NULL ? prevnode->lineno + 1 : 1;
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return newnode;
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}
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/* Make a copy of a node to a pointer (space will be malloc()ed). */
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|
filestruct *copy_node(const filestruct *src)
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{
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filestruct *dst = (filestruct *)nmalloc(sizeof(filestruct));
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assert(src != NULL);
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dst->data = charalloc(strlen(src->data) + 1);
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dst->next = src->next;
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dst->prev = src->prev;
|
|
strcpy(dst->data, src->data);
|
|
dst->lineno = src->lineno;
|
|
|
|
return dst;
|
|
}
|
|
|
|
/* Splice a node into an existing filestruct. */
|
|
void splice_node(filestruct *begin, filestruct *newnode, filestruct *end)
|
|
{
|
|
if (newnode != NULL) {
|
|
newnode->next = end;
|
|
newnode->prev = begin;
|
|
}
|
|
if (begin != NULL)
|
|
begin->next = newnode;
|
|
if (end != NULL)
|
|
end->prev = newnode;
|
|
}
|
|
|
|
/* Unlink a node from the rest of the filestruct. */
|
|
void unlink_node(const filestruct *fileptr)
|
|
{
|
|
assert(fileptr != NULL);
|
|
|
|
if (fileptr->prev != NULL)
|
|
fileptr->prev->next = fileptr->next;
|
|
|
|
if (fileptr->next != NULL)
|
|
fileptr->next->prev = fileptr->prev;
|
|
}
|
|
|
|
/* Delete a node from the filestruct. */
|
|
void delete_node(filestruct *fileptr)
|
|
{
|
|
if (fileptr != NULL) {
|
|
if (fileptr->data != NULL)
|
|
free(fileptr->data);
|
|
free(fileptr);
|
|
}
|
|
}
|
|
|
|
/* Okay, now let's duplicate a whole struct! */
|
|
filestruct *copy_filestruct(const filestruct *src)
|
|
{
|
|
filestruct *head; /* copy of src, top of the copied list */
|
|
filestruct *prev; /* temp that traverses the list */
|
|
|
|
assert(src != NULL);
|
|
|
|
prev = copy_node(src);
|
|
prev->prev = NULL;
|
|
head = prev;
|
|
src = src->next;
|
|
while (src != NULL) {
|
|
prev->next = copy_node(src);
|
|
prev->next->prev = prev;
|
|
prev = prev->next;
|
|
|
|
src = src->next;
|
|
}
|
|
|
|
prev->next = NULL;
|
|
return head;
|
|
}
|
|
|
|
/* Frees a filestruct. */
|
|
void free_filestruct(filestruct *src)
|
|
{
|
|
if (src != NULL) {
|
|
while (src->next != NULL) {
|
|
src = src->next;
|
|
delete_node(src->prev);
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("%s: free'd a node, YAY!\n"), "delete_node()");
|
|
#endif
|
|
}
|
|
delete_node(src);
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("%s: free'd last node.\n"), "delete_node()");
|
|
#endif
|
|
}
|
|
}
|
|
|
|
void renumber_all(void)
|
|
{
|
|
filestruct *temp;
|
|
int i = 1;
|
|
|
|
assert(fileage == NULL || fileage != fileage->next);
|
|
for (temp = fileage; temp != NULL; temp = temp->next)
|
|
temp->lineno = i++;
|
|
}
|
|
|
|
void renumber(filestruct *fileptr)
|
|
{
|
|
if (fileptr == NULL || fileptr->prev == NULL || fileptr == fileage)
|
|
renumber_all();
|
|
else {
|
|
int lineno = fileptr->prev->lineno;
|
|
|
|
assert(fileptr != fileptr->next);
|
|
for (; fileptr != NULL; fileptr = fileptr->next)
|
|
fileptr->lineno = ++lineno;
|
|
}
|
|
}
|
|
|
|
/* Print one usage string to the screen, removes lots of duplicate
|
|
* strings to translate and takes out the parts that shouldn't be
|
|
* translatable (the flag names). */
|
|
void print1opt(const char *shortflag, const char *longflag,
|
|
const char *desc)
|
|
{
|
|
printf(" %s\t", shortflag);
|
|
if (strlen(shortflag) < 8)
|
|
printf("\t");
|
|
|
|
#ifdef HAVE_GETOPT_LONG
|
|
printf("%s\t", longflag);
|
|
if (strlen(longflag) < 8)
|
|
printf("\t\t");
|
|
else if (strlen(longflag) < 16)
|
|
printf("\t");
|
|
#endif
|
|
|
|
printf("%s\n", desc);
|
|
}
|
|
|
|
void usage(void)
|
|
{
|
|
#ifdef HAVE_GETOPT_LONG
|
|
printf(_("Usage: nano [+LINE] [GNU long option] [option] [file]\n\n"));
|
|
printf(_("Option\t\tLong option\t\tMeaning\n"));
|
|
#else
|
|
printf(_("Usage: nano [+LINE] [option] [file]\n\n"));
|
|
printf(_("Option\t\tMeaning\n"));
|
|
#endif /* HAVE_GETOPT_LONG */
|
|
|
|
print1opt("-h, -?", "--help", _("Show this message"));
|
|
print1opt(_("+LINE"), "", _("Start at line number LINE"));
|
|
#ifndef NANO_SMALL
|
|
print1opt("-B", "--backup", _("Backup existing files on save"));
|
|
print1opt("-D", "--dos", _("Write file in DOS format"));
|
|
#endif
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
print1opt("-F", "--multibuffer", _("Enable multiple file buffers"));
|
|
#endif
|
|
#ifdef ENABLE_NANORC
|
|
print1opt("-H", "--historylog", _("Log & read search/replace string history"));
|
|
print1opt("-I", "--ignorercfiles", _("Don't look at nanorc files"));
|
|
#endif
|
|
print1opt("-K", "--keypad", _("Use alternate keypad routines"));
|
|
#ifndef NANO_SMALL
|
|
print1opt("-M", "--mac", _("Write file in Mac format"));
|
|
print1opt("-N", "--noconvert", _("Don't convert files from DOS/Mac format"));
|
|
#endif
|
|
#ifndef DISABLE_JUSTIFY
|
|
print1opt(_("-Q [str]"), _("--quotestr=[str]"), _("Quoting string, default \"> \""));
|
|
#endif
|
|
#ifdef HAVE_REGEX_H
|
|
print1opt("-R", "--regexp", _("Do regular expression searches"));
|
|
#endif
|
|
#ifndef NANO_SMALL
|
|
print1opt("-S", "--smooth", _("Smooth scrolling"));
|
|
#endif
|
|
print1opt(_("-T [num]"), _("--tabsize=[num]"), _("Set width of a tab to num"));
|
|
print1opt("-V", "--version", _("Print version information and exit"));
|
|
#ifdef ENABLE_COLOR
|
|
print1opt(_("-Y [str]"), _("--syntax [str]"), _("Syntax definition to use"));
|
|
#endif
|
|
print1opt("-c", "--const", _("Constantly show cursor position"));
|
|
#ifndef NANO_SMALL
|
|
print1opt("-i", "--autoindent", _("Automatically indent new lines"));
|
|
print1opt("-k", "--cut", _("Let ^K cut from cursor to end of line"));
|
|
#endif
|
|
print1opt("-l", "--nofollow", _("Don't follow symbolic links, overwrite"));
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
print1opt("-m", "--mouse", _("Enable mouse"));
|
|
#endif
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
print1opt(_("-o [dir]"), _("--operatingdir=[dir]"), _("Set operating directory"));
|
|
#endif
|
|
print1opt("-p", "--preserve", _("Preserve XON (^Q) and XOFF (^S) keys"));
|
|
#ifndef DISABLE_WRAPJUSTIFY
|
|
print1opt(_("-r [#cols]"), _("--fill=[#cols]"), _("Set fill cols to (wrap lines at) #cols"));
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
print1opt(_("-s [prog]"), _("--speller=[prog]"), _("Enable alternate speller"));
|
|
#endif
|
|
print1opt("-t", "--tempfile", _("Auto save on exit, don't prompt"));
|
|
print1opt("-v", "--view", _("View (read only) mode"));
|
|
#ifndef DISABLE_WRAPPING
|
|
print1opt("-w", "--nowrap", _("Don't wrap long lines"));
|
|
#endif
|
|
print1opt("-x", "--nohelp", _("Don't show help window"));
|
|
print1opt("-z", "--suspend", _("Enable suspend"));
|
|
|
|
/* this is a special case */
|
|
printf(" %s\t\t\t%s\n","-a, -b, -e, -f, -g, -j", _("(ignored, for Pico compatibility)"));
|
|
|
|
exit(0);
|
|
}
|
|
|
|
void version(void)
|
|
{
|
|
printf(_(" GNU nano version %s (compiled %s, %s)\n"),
|
|
VERSION, __TIME__, __DATE__);
|
|
printf(_
|
|
(" Email: nano@nano-editor.org Web: http://www.nano-editor.org/"));
|
|
printf(_("\n Compiled options:"));
|
|
|
|
#ifndef ENABLE_NLS
|
|
printf(" --disable-nls");
|
|
#endif
|
|
#ifdef DEBUG
|
|
printf(" --enable-debug");
|
|
#endif
|
|
#ifdef NANO_EXTRA
|
|
printf(" --enable-extra");
|
|
#endif
|
|
#ifdef NANO_SMALL
|
|
printf(" --enable-tiny");
|
|
#else
|
|
#ifdef DISABLE_BROWSER
|
|
printf(" --disable-browser");
|
|
#endif
|
|
#ifdef DISABLE_HELP
|
|
printf(" --disable-help");
|
|
#endif
|
|
#ifdef DISABLE_JUSTIFY
|
|
printf(" --disable-justify");
|
|
#endif
|
|
#if defined(DISABLE_MOUSE) || !defined(NCURSES_MOUSE_VERSION)
|
|
printf(" --disable-mouse");
|
|
#endif
|
|
#ifdef DISABLE_OPERATINGDIR
|
|
printf(" --disable-operatingdir");
|
|
#endif
|
|
#ifdef DISABLE_SPELLER
|
|
printf(" --disable-speller");
|
|
#endif
|
|
#ifdef DISABLE_TABCOMP
|
|
printf(" --disable-tabcomp");
|
|
#endif
|
|
#endif /* NANO_SMALL */
|
|
#ifdef DISABLE_WRAPPING
|
|
printf(" --disable-wrapping");
|
|
#endif
|
|
#ifdef DISABLE_ROOTWRAP
|
|
printf(" --disable-wrapping-as-root");
|
|
#endif
|
|
#ifdef ENABLE_COLOR
|
|
printf(" --enable-color");
|
|
#endif
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
printf(" --enable-multibuffer");
|
|
#endif
|
|
#ifdef ENABLE_NANORC
|
|
printf(" --enable-nanorc");
|
|
#endif
|
|
#ifdef USE_SLANG
|
|
printf(" --with-slang");
|
|
#endif
|
|
printf("\n");
|
|
}
|
|
|
|
/* Stuff we do when we abort from programs and want to clean up the
|
|
* screen. This doesn't do much right now. */
|
|
void do_early_abort(void)
|
|
{
|
|
blank_statusbar_refresh();
|
|
}
|
|
|
|
int no_help(void)
|
|
{
|
|
return ISSET(NO_HELP) ? 2 : 0;
|
|
}
|
|
|
|
#if defined(DISABLE_JUSTIFY) || defined(DISABLE_SPELLER) || defined(DISABLE_HELP) || defined(NANO_SMALL)
|
|
void nano_disabled_msg(void)
|
|
{
|
|
statusbar(_("Sorry, support for this function has been disabled"));
|
|
}
|
|
#endif
|
|
|
|
void do_preserve_msg(void)
|
|
{
|
|
fprintf(stderr, _("\nThe -p flag now invokes the Pico \"preserve\" flag.\n"
|
|
"The Pico compatibility flag has been removed as nano\n"
|
|
"now fully Pico compatible. Please see the nano FAQ\n"
|
|
"for more info on this change...\n\n"
|
|
"Press return to continue\n"));
|
|
while (getchar() != '\n');
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
static int pid; /* This is the PID of the newly forked process
|
|
* below. It must be global since the signal
|
|
* handler needs it. */
|
|
RETSIGTYPE cancel_fork(int signal)
|
|
{
|
|
if (kill(pid, SIGKILL) == -1)
|
|
nperror("kill");
|
|
}
|
|
|
|
int open_pipe(const char *command)
|
|
{
|
|
int fd[2];
|
|
FILE *f;
|
|
struct sigaction oldaction, newaction;
|
|
/* original and temporary handlers for SIGINT */
|
|
#ifdef _POSIX_VDISABLE
|
|
struct termios term, newterm;
|
|
#endif /* _POSIX_VDISABLE */
|
|
int cancel_sigs = 0;
|
|
/* cancel_sigs == 1 means that sigaction() failed without changing
|
|
* the signal handlers. cancel_sigs == 2 means the signal handler
|
|
* was changed, but the tcsetattr didn't succeed.
|
|
*
|
|
* I use this variable since it is important to put things back when
|
|
* we finish, even if we get errors. */
|
|
|
|
/* Make our pipes. */
|
|
|
|
if (pipe(fd) == -1) {
|
|
statusbar(_("Could not pipe"));
|
|
return 1;
|
|
}
|
|
|
|
/* Fork a child. */
|
|
|
|
if ((pid = fork()) == 0) {
|
|
close(fd[0]);
|
|
dup2(fd[1], fileno(stdout));
|
|
dup2(fd[1], fileno(stderr));
|
|
/* If execl() returns at all, there was an error. */
|
|
|
|
execl("/bin/sh", "sh", "-c", command, 0);
|
|
exit(0);
|
|
}
|
|
|
|
/* Else continue as parent. */
|
|
|
|
close(fd[1]);
|
|
|
|
if (pid == -1) {
|
|
close(fd[0]);
|
|
statusbar(_("Could not fork"));
|
|
return 1;
|
|
}
|
|
|
|
/* Before we start reading the forked command's output, we set
|
|
* things up so that ^C will cancel the new process. */
|
|
if (sigaction(SIGINT, NULL, &newaction) == -1) {
|
|
cancel_sigs = 1;
|
|
nperror("sigaction");
|
|
} else {
|
|
newaction.sa_handler = cancel_fork;
|
|
if (sigaction(SIGINT, &newaction, &oldaction) == -1) {
|
|
cancel_sigs = 1;
|
|
nperror("sigaction");
|
|
}
|
|
}
|
|
/* Note that now oldaction is the previous SIGINT signal handler,
|
|
* to be restored later. */
|
|
|
|
/* See if the platform supports disabling individual control
|
|
* characters. */
|
|
#ifdef _POSIX_VDISABLE
|
|
if (cancel_sigs == 0 && tcgetattr(0, &term) == -1) {
|
|
cancel_sigs = 2;
|
|
nperror("tcgetattr");
|
|
}
|
|
if (cancel_sigs == 0) {
|
|
newterm = term;
|
|
/* Grab oldterm's VINTR key :-) */
|
|
newterm.c_cc[VINTR] = oldterm.c_cc[VINTR];
|
|
if (tcsetattr(0, TCSANOW, &newterm) == -1) {
|
|
cancel_sigs = 2;
|
|
nperror("tcsetattr");
|
|
}
|
|
}
|
|
#endif /* _POSIX_VDISABLE */
|
|
|
|
f = fdopen(fd[0], "rb");
|
|
if (f == NULL)
|
|
nperror("fdopen");
|
|
|
|
read_file(f, "stdin", 0);
|
|
/* if multibuffer mode is on, we could be here in view mode; if so,
|
|
don't set the modification flag */
|
|
if (!ISSET(VIEW_MODE))
|
|
set_modified();
|
|
|
|
if (wait(NULL) == -1)
|
|
nperror("wait");
|
|
|
|
#ifdef _POSIX_VDISABLE
|
|
if (cancel_sigs == 0 && tcsetattr(0, TCSANOW, &term) == -1)
|
|
nperror("tcsetattr");
|
|
#endif /* _POSIX_VDISABLE */
|
|
|
|
if (cancel_sigs != 1 && sigaction(SIGINT, &oldaction, NULL) == -1)
|
|
nperror("sigaction");
|
|
|
|
return 0;
|
|
}
|
|
#endif /* NANO_SMALL */
|
|
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
void do_mouse(void)
|
|
{
|
|
MEVENT mevent;
|
|
int currslen;
|
|
const shortcut *s = currshortcut;
|
|
|
|
if (getmouse(&mevent) == ERR)
|
|
return;
|
|
|
|
/* If mouse not in edit or bottom window, return */
|
|
if (wenclose(edit, mevent.y, mevent.x) && currshortcut == main_list) {
|
|
int sameline;
|
|
/* Did they click on the line with the cursor? If they
|
|
clicked on the cursor, we set the mark. */
|
|
size_t xcur;
|
|
/* The character they clicked on. */
|
|
|
|
/* Subtract out size of topwin. Perhaps we need a constant
|
|
* somewhere? */
|
|
mevent.y -= 2;
|
|
|
|
sameline = mevent.y == current_y;
|
|
|
|
/* Move to where the click occurred. */
|
|
for(; current_y < mevent.y && current->next != NULL; current_y++)
|
|
current = current->next;
|
|
for(; current_y > mevent.y && current->prev != NULL; current_y--)
|
|
current = current->prev;
|
|
|
|
xcur = actual_x(current, get_page_start(xplustabs()) + mevent.x);
|
|
|
|
/* Selecting where the cursor is toggles the mark. As does
|
|
selecting beyond the line length with the cursor at the end of
|
|
the line. */
|
|
if (sameline && xcur == current_x) {
|
|
if (ISSET(VIEW_MODE)) {
|
|
print_view_warning();
|
|
return;
|
|
}
|
|
do_mark();
|
|
}
|
|
|
|
current_x = xcur;
|
|
placewewant = xplustabs();
|
|
edit_refresh();
|
|
} else if (wenclose(bottomwin, mevent.y, mevent.x) && !ISSET(NO_HELP)) {
|
|
int i, k;
|
|
|
|
if (currshortcut == main_list)
|
|
currslen = MAIN_VISIBLE;
|
|
else
|
|
currslen = length_of_list(currshortcut);
|
|
|
|
if (currslen < 2)
|
|
k = COLS / 6;
|
|
else
|
|
k = COLS / ((currslen + (currslen %2)) / 2);
|
|
|
|
/* Determine what shortcut list was clicked */
|
|
mevent.y -= (editwinrows + 3);
|
|
|
|
if (mevent.y < 0) /* They clicked on the statusbar */
|
|
return;
|
|
|
|
/* Don't select stuff beyond list length */
|
|
if (mevent.x / k >= currslen)
|
|
return;
|
|
|
|
for (i = 0; i < (mevent.x / k) * 2 + mevent.y; i++)
|
|
s = s->next;
|
|
|
|
/* And ungetch that value */
|
|
ungetch(s->val);
|
|
|
|
/* And if it's an alt-key sequence, we should probably send alt
|
|
too ;-) */
|
|
if (s->val >= 'a' && s->val <= 'z')
|
|
ungetch(27);
|
|
}
|
|
}
|
|
#endif
|
|
|
|
/* The user typed a printable character; add it to the edit buffer. */
|
|
void do_char(char ch)
|
|
{
|
|
size_t current_len = strlen(current->data);
|
|
#if !defined(DISABLE_WRAPPING) || defined(ENABLE_COLOR)
|
|
int refresh = 0;
|
|
/* Do we have to run edit_refresh(), or can we get away with
|
|
* update_line()? */
|
|
#endif
|
|
|
|
/* magic-line: when a character is inserted on the current magic line,
|
|
* it means we need a new one! */
|
|
if (filebot == current && current->data[0] == '\0') {
|
|
new_magicline();
|
|
fix_editbot();
|
|
}
|
|
|
|
/* more dangerousness fun =) */
|
|
current->data = nrealloc(current->data, current_len + 2);
|
|
assert(current_x <= current_len);
|
|
memmove(¤t->data[current_x + 1],
|
|
¤t->data[current_x],
|
|
current_len - current_x + 1);
|
|
current->data[current_x] = ch;
|
|
totsize++;
|
|
set_modified();
|
|
|
|
#ifndef NANO_SMALL
|
|
/* note that current_x has not yet been incremented */
|
|
if (current == mark_beginbuf && current_x < mark_beginx)
|
|
mark_beginx++;
|
|
#endif
|
|
|
|
do_right();
|
|
|
|
#ifndef DISABLE_WRAPPING
|
|
if (!ISSET(NO_WRAP) && ch != '\t')
|
|
refresh = do_wrap(current);
|
|
#endif
|
|
|
|
#ifdef ENABLE_COLOR
|
|
refresh = 1;
|
|
#endif
|
|
|
|
#if !defined(DISABLE_WRAPPING) || defined(ENABLE_COLOR)
|
|
if (refresh)
|
|
edit_refresh();
|
|
#endif
|
|
|
|
UNSET(KEEP_CUTBUFFER);
|
|
}
|
|
|
|
int do_backspace(void)
|
|
{
|
|
int refresh = 0;
|
|
if (current_x > 0) {
|
|
assert(current_x <= strlen(current->data));
|
|
/* Let's get dangerous */
|
|
memmove(¤t->data[current_x - 1], ¤t->data[current_x],
|
|
strlen(current->data) - current_x + 1);
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("current->data now = \"%s\"\n"), current->data);
|
|
#endif
|
|
align(¤t->data);
|
|
#ifndef NANO_SMALL
|
|
if (current_x <= mark_beginx && mark_beginbuf == current)
|
|
mark_beginx--;
|
|
#endif
|
|
do_left();
|
|
#ifdef ENABLE_COLOR
|
|
refresh = 1;
|
|
#endif
|
|
} else {
|
|
filestruct *previous;
|
|
const filestruct *tmp;
|
|
|
|
if (current == fileage)
|
|
return 0; /* Can't delete past top of file */
|
|
|
|
previous = current->prev;
|
|
current_x = strlen(previous->data);
|
|
placewewant = strlenpt(previous->data);
|
|
#ifndef NANO_SMALL
|
|
if (current == mark_beginbuf) {
|
|
mark_beginx += current_x;
|
|
mark_beginbuf = previous;
|
|
}
|
|
#endif
|
|
previous->data = nrealloc(previous->data,
|
|
current_x + strlen(current->data) + 1);
|
|
strcpy(previous->data + current_x, current->data);
|
|
|
|
unlink_node(current);
|
|
delete_node(current);
|
|
tmp = current;
|
|
current = (previous->next ? previous->next : previous);
|
|
renumber(current);
|
|
/* We had to renumber before doing update_line. */
|
|
if (tmp == edittop)
|
|
page_up();
|
|
|
|
/* Ooops, sanity check */
|
|
if (tmp == filebot) {
|
|
filebot = current;
|
|
editbot = current;
|
|
|
|
/* Recreate the magic line if we're deleting it AND if the
|
|
line we're on now is NOT blank. if it is blank we
|
|
can just use IT for the magic line. This is how Pico
|
|
appears to do it, in any case. */
|
|
if (current->data[0] != '\0') {
|
|
new_magicline();
|
|
fix_editbot();
|
|
}
|
|
}
|
|
|
|
current = previous;
|
|
if (current_y > 0)
|
|
current_y--;
|
|
totlines--;
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("After, data = \"%s\"\n"), current->data);
|
|
#endif
|
|
UNSET(KEEP_CUTBUFFER);
|
|
refresh = 1;
|
|
}
|
|
|
|
totsize--;
|
|
set_modified();
|
|
if (refresh)
|
|
edit_refresh();
|
|
return 1;
|
|
}
|
|
|
|
int do_delete(void)
|
|
{
|
|
int refresh = 0;
|
|
|
|
/* blbf -> blank line before filebot (see below) */
|
|
int blbf = 0;
|
|
|
|
if (current->next == filebot && current->data[0] == '\0')
|
|
blbf = 1;
|
|
|
|
placewewant = xplustabs();
|
|
|
|
if (current_x != strlen(current->data)) {
|
|
/* Let's get dangerous */
|
|
memmove(¤t->data[current_x], ¤t->data[current_x + 1],
|
|
strlen(current->data) - current_x);
|
|
|
|
align(¤t->data);
|
|
#ifdef ENABLE_COLOR
|
|
refresh = 1;
|
|
#endif
|
|
} else if (current->next != NULL && (current->next != filebot || blbf)) {
|
|
/* We can delete the line before filebot only if it is blank: it
|
|
becomes the new magic line then. */
|
|
|
|
filestruct *foo;
|
|
|
|
current->data = nrealloc(current->data,
|
|
strlen(current->data) +
|
|
strlen(current->next->data) + 1);
|
|
strcat(current->data, current->next->data);
|
|
|
|
foo = current->next;
|
|
if (filebot == foo) {
|
|
filebot = current;
|
|
editbot = current;
|
|
}
|
|
|
|
unlink_node(foo);
|
|
delete_node(foo);
|
|
renumber(current);
|
|
totlines--;
|
|
refresh = 1;
|
|
} else
|
|
return 0;
|
|
|
|
totsize--;
|
|
set_modified();
|
|
UNSET(KEEP_CUTBUFFER);
|
|
update_line(current, current_x);
|
|
if (refresh)
|
|
edit_refresh();
|
|
return 1;
|
|
}
|
|
|
|
int do_tab(void)
|
|
{
|
|
do_char('\t');
|
|
return 1;
|
|
}
|
|
|
|
/* Someone hits return *gasp!* */
|
|
int do_enter(void)
|
|
{
|
|
filestruct *newnode;
|
|
char *tmp;
|
|
|
|
newnode = make_new_node(current);
|
|
assert(current != NULL && current->data != NULL);
|
|
tmp = ¤t->data[current_x];
|
|
|
|
#ifndef NANO_SMALL
|
|
/* Do auto-indenting, like the neolithic Turbo Pascal editor. */
|
|
if (ISSET(AUTOINDENT)) {
|
|
int extra = 0;
|
|
const char *spc = current->data;
|
|
|
|
while (*spc == ' ' || *spc == '\t') {
|
|
extra++;
|
|
spc++;
|
|
}
|
|
/* If current_x < extra, then we are breaking the line in the
|
|
* indentation. Autoindenting should add only current_x
|
|
* characters of indentation. */
|
|
if (current_x < extra)
|
|
extra = current_x;
|
|
else
|
|
current_x = extra;
|
|
totsize += extra;
|
|
|
|
newnode->data = charalloc(strlen(tmp) + extra + 1);
|
|
strncpy(newnode->data, current->data, extra);
|
|
strcpy(&newnode->data[extra], tmp);
|
|
} else
|
|
#endif
|
|
{
|
|
current_x = 0;
|
|
newnode->data = charalloc(strlen(tmp) + 1);
|
|
strcpy(newnode->data, tmp);
|
|
}
|
|
*tmp = '\0';
|
|
|
|
if (current->next == NULL) {
|
|
filebot = newnode;
|
|
editbot = newnode;
|
|
}
|
|
splice_node(current, newnode, current->next);
|
|
|
|
totsize++;
|
|
renumber(current);
|
|
current = newnode;
|
|
align(¤t->data);
|
|
|
|
/* The logic here is as follows:
|
|
* -> If we are at the bottom of the buffer, we want to recenter
|
|
* (read: rebuild) the screen and forcibly move the cursor.
|
|
* -> otherwise, we want simply to redraw the screen and update
|
|
* where we think the cursor is.
|
|
*/
|
|
if (current_y == editwinrows - 1) {
|
|
#ifndef NANO_SMALL
|
|
if (ISSET(SMOOTHSCROLL))
|
|
edit_update(current, NONE);
|
|
else
|
|
#endif
|
|
edit_update(current, CENTER);
|
|
reset_cursor();
|
|
} else {
|
|
current_y++;
|
|
edit_refresh();
|
|
update_cursor();
|
|
}
|
|
|
|
totlines++;
|
|
set_modified();
|
|
|
|
placewewant = xplustabs();
|
|
return 1;
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
int do_next_word(void)
|
|
{
|
|
filestruct *old = current;
|
|
|
|
assert(current != NULL && current->data != NULL);
|
|
|
|
/* Skip letters in this word first. */
|
|
while (current->data[current_x] != '\0' &&
|
|
isalnum((int)current->data[current_x]))
|
|
current_x++;
|
|
|
|
for (; current != NULL; current = current->next) {
|
|
while (current->data[current_x] != '\0' &&
|
|
!isalnum((int)current->data[current_x]))
|
|
current_x++;
|
|
|
|
if (current->data[current_x] != '\0')
|
|
break;
|
|
|
|
current_x = 0;
|
|
}
|
|
if (current == NULL)
|
|
current = filebot;
|
|
|
|
placewewant = xplustabs();
|
|
|
|
if (current->lineno >= editbot->lineno) {
|
|
/* If we're on the last line, don't center the screen. */
|
|
if (current->lineno == filebot->lineno)
|
|
edit_refresh();
|
|
else
|
|
edit_update(current, CENTER);
|
|
}
|
|
else {
|
|
/* If we've jumped lines, refresh the old line. We can't just
|
|
use current->prev here, because we may have skipped over some
|
|
blank lines, in which case the previous line is the wrong
|
|
one. */
|
|
if (current != old) {
|
|
update_line(old, 0);
|
|
/* If the mark was set, then the lines between old and
|
|
current have to be updated too. */
|
|
if (ISSET(MARK_ISSET)) {
|
|
while (old->next != current) {
|
|
old = old->next;
|
|
update_line(old, 0);
|
|
}
|
|
}
|
|
}
|
|
update_line(current, current_x);
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* The same thing for backwards. */
|
|
int do_prev_word(void)
|
|
{
|
|
filestruct *old = current;
|
|
|
|
assert(current != NULL && current->data != NULL);
|
|
|
|
/* Skip letters in this word first. */
|
|
while (current_x >= 0 && isalnum((int)current->data[current_x]))
|
|
current_x--;
|
|
|
|
for (; current != NULL; current = current->prev) {
|
|
while (current_x >= 0 && !isalnum((int)current->data[current_x]))
|
|
current_x--;
|
|
|
|
if (current_x >= 0)
|
|
break;
|
|
|
|
if (current->prev != NULL)
|
|
current_x = strlen(current->prev->data);
|
|
}
|
|
|
|
if (current != NULL) {
|
|
while (current_x > 0 && isalnum((int)current->data[current_x - 1]))
|
|
current_x--;
|
|
} else {
|
|
current = fileage;
|
|
current_x = 0;
|
|
}
|
|
|
|
placewewant = xplustabs();
|
|
|
|
if (current->lineno <= edittop->lineno) {
|
|
/* If we're on the first line, don't center the screen. */
|
|
if (current->lineno == fileage->lineno)
|
|
edit_refresh();
|
|
else
|
|
edit_update(current, CENTER);
|
|
}
|
|
else {
|
|
/* If we've jumped lines, refresh the old line. We can't just
|
|
use current->prev here, because we may have skipped over some
|
|
blank lines, in which case the previous line is the wrong
|
|
one. */
|
|
if (current != old) {
|
|
update_line(old, 0);
|
|
/* If the mark was set, then the lines between old and
|
|
current have to be updated too. */
|
|
if (ISSET(MARK_ISSET)) {
|
|
while (old->prev != current) {
|
|
old = old->prev;
|
|
update_line(old, 0);
|
|
}
|
|
}
|
|
}
|
|
update_line(current, current_x);
|
|
}
|
|
return 0;
|
|
}
|
|
#endif /* !NANO_SMALL */
|
|
|
|
int do_mark(void)
|
|
{
|
|
#ifdef NANO_SMALL
|
|
nano_disabled_msg();
|
|
#else
|
|
if (!ISSET(MARK_ISSET)) {
|
|
statusbar(_("Mark Set"));
|
|
SET(MARK_ISSET);
|
|
mark_beginbuf = current;
|
|
mark_beginx = current_x;
|
|
} else {
|
|
statusbar(_("Mark UNset"));
|
|
UNSET(MARK_ISSET);
|
|
edit_refresh();
|
|
}
|
|
#endif
|
|
return 1;
|
|
}
|
|
|
|
void wrap_reset(void)
|
|
{
|
|
UNSET(SAMELINEWRAP);
|
|
}
|
|
|
|
#ifndef DISABLE_WRAPPING
|
|
/* We wrap the given line. Precondition: we assume the cursor has been
|
|
* moved forward since the last typed character. Return value:
|
|
* whether we wrapped. */
|
|
int do_wrap(filestruct *inptr)
|
|
{
|
|
size_t len = strlen(inptr->data); /* length of the line we wrap */
|
|
int i = 0; /* generic loop variable */
|
|
int wrap_loc = -1; /* index of inptr->data where we wrap */
|
|
int word_back = -1;
|
|
#ifndef NANO_SMALL
|
|
const char *indentation = NULL;
|
|
/* indentation to prepend to the new line */
|
|
int indent_len = 0; /* strlen(indentation) */
|
|
#endif
|
|
const char *after_break; /* text after the wrap point */
|
|
int after_break_len; /* strlen(after_break) */
|
|
int wrapping = 0; /* do we prepend to the next line? */
|
|
const char *wrap_line = NULL;
|
|
/* the next line, minus indentation */
|
|
int wrap_line_len = 0; /* strlen(wrap_line) */
|
|
char *newline = NULL; /* the line we create */
|
|
int new_line_len = 0; /* eventual length of newline */
|
|
|
|
/* There are three steps. First, we decide where to wrap. Then, we
|
|
* create the new wrap line. Finally, we clean up. */
|
|
|
|
/* Step 1, finding where to wrap. We are going to add a new-line
|
|
* after a white-space character. In this step, we set wrap_loc as the
|
|
* location of this replacement.
|
|
*
|
|
* Where should we break the line? We need the last "legal wrap point"
|
|
* such that the last word before it ended at or before fill. If there
|
|
* is no such point, we settle for the first legal wrap point.
|
|
*
|
|
* A "legal wrap point" is a white-space character that is not followed by
|
|
* white-space.
|
|
*
|
|
* If there is no legal wrap point or we found the last character of the
|
|
* line, we should return without wrapping.
|
|
*
|
|
* Note that the initial indentation does not count as a legal wrap
|
|
* point if we are going to auto-indent!
|
|
*
|
|
* Note that the code below could be optimised, by not calling strnlenpt()
|
|
* so often. */
|
|
|
|
#ifndef NANO_SMALL
|
|
if (ISSET(AUTOINDENT))
|
|
i = indent_length(inptr->data);
|
|
#endif
|
|
wrap_line = inptr->data + i;
|
|
for(; i < len; i++, wrap_line++) {
|
|
/* record where the last word ended */
|
|
if (*wrap_line != ' ' && *wrap_line != '\t')
|
|
word_back = i;
|
|
/* if we have found a "legal wrap point" and the current word
|
|
* extends too far, then we stop */
|
|
if (wrap_loc != -1 && strnlenpt(inptr->data, word_back + 1) > fill)
|
|
break;
|
|
/* we record the latest "legal wrap point" */
|
|
if (word_back != i && wrap_line[1] != ' ' && wrap_line[1] != '\t')
|
|
wrap_loc = i;
|
|
}
|
|
if (wrap_loc < 0 || i == len)
|
|
return 0;
|
|
|
|
/* Step 2, making the new wrap line. It will consist of indentation +
|
|
* after_break + " " + wrap_line (although indentation and wrap_line are
|
|
* conditional on flags and #defines). */
|
|
|
|
/* after_break is the text that will be moved to the next line. */
|
|
after_break = inptr->data + wrap_loc + 1;
|
|
after_break_len = len - wrap_loc - 1;
|
|
assert(after_break_len == strlen(after_break));
|
|
|
|
/* new_line_len will later be increased by the lengths of indentation
|
|
* and wrap_line. */
|
|
new_line_len = after_break_len;
|
|
|
|
/* We prepend the wrapped text to the next line, if the flag is set,
|
|
* and there is a next line, and prepending would not make the line
|
|
* too long. */
|
|
if (ISSET(SAMELINEWRAP) && inptr->next) {
|
|
wrap_line = inptr->next->data;
|
|
wrap_line_len = strlen(wrap_line);
|
|
|
|
/* +1 for the space between after_break and wrap_line */
|
|
if ((new_line_len + 1 + wrap_line_len) <= fill) {
|
|
wrapping = 1;
|
|
new_line_len += (1 + wrap_line_len);
|
|
}
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
if (ISSET(AUTOINDENT)) {
|
|
/* Indentation comes from the next line if wrapping, else from
|
|
* this line. */
|
|
indentation = (wrapping ? wrap_line : inptr->data);
|
|
indent_len = indent_length(indentation);
|
|
if (wrapping)
|
|
/* The wrap_line text should not duplicate indentation.
|
|
* Note in this case we need not increase new_line_len. */
|
|
wrap_line += indent_len;
|
|
else
|
|
new_line_len += indent_len;
|
|
}
|
|
#endif
|
|
|
|
/* Now we allocate the new line and copy into it. */
|
|
newline = charalloc(new_line_len + 1); /* +1 for \0 */
|
|
*newline = '\0';
|
|
|
|
#ifndef NANO_SMALL
|
|
if (ISSET(AUTOINDENT)) {
|
|
strncpy(newline, indentation, indent_len);
|
|
newline[indent_len] = '\0';
|
|
}
|
|
#endif
|
|
strcat(newline, after_break);
|
|
/* We end the old line after wrap_loc. Note this does not eat the
|
|
* space. */
|
|
null_at(&inptr->data, wrap_loc + 1);
|
|
totsize++;
|
|
if (wrapping) {
|
|
/* In this case, totsize increases by 1 since we add a space
|
|
* between after_break and wrap_line. If the line already ends
|
|
* in a tab or a space, we don't add a space and decrement
|
|
* totsize to account for that. */
|
|
if (!isspace(newline[strlen(newline) - 1]))
|
|
strcat(newline, " ");
|
|
else
|
|
totsize--;
|
|
strcat(newline, wrap_line);
|
|
free(inptr->next->data);
|
|
inptr->next->data = newline;
|
|
} else {
|
|
filestruct *temp = (filestruct *)nmalloc(sizeof(filestruct));
|
|
|
|
/* In this case, the file size changes by +1 for the new line, and
|
|
* +indent_len for the new indentation. */
|
|
#ifndef NANO_SMALL
|
|
totsize += indent_len;
|
|
#endif
|
|
totlines++;
|
|
temp->data = newline;
|
|
temp->prev = inptr;
|
|
temp->next = inptr->next;
|
|
temp->prev->next = temp;
|
|
/* If temp->next is NULL, then temp is the last line of the
|
|
* file, so we must set filebot. */
|
|
if (temp->next != NULL)
|
|
temp->next->prev = temp;
|
|
else
|
|
filebot = temp;
|
|
}
|
|
|
|
/* Step 3, clean up. Here we reposition the cursor and mark, and do some
|
|
* other sundry things. */
|
|
|
|
/* later wraps of this line will be prepended to the next line. */
|
|
SET(SAMELINEWRAP);
|
|
|
|
/* Each line knows its line number. We recalculate these if we
|
|
* inserted a new line. */
|
|
if (!wrapping)
|
|
renumber(inptr);
|
|
|
|
/* If the cursor was after the break point, we must move it. */
|
|
if (current_x > wrap_loc) {
|
|
current = current->next;
|
|
current_x -=
|
|
#ifndef NANO_SMALL
|
|
-indent_len +
|
|
#endif
|
|
wrap_loc + 1;
|
|
wrap_reset();
|
|
placewewant = xplustabs();
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
/* If the mark was on this line after the wrap point, we move it down.
|
|
* If it was on the next line and we wrapped, we must move it
|
|
* right. */
|
|
if (mark_beginbuf == inptr && mark_beginx > wrap_loc) {
|
|
mark_beginbuf = inptr->next;
|
|
mark_beginx -= wrap_loc - indent_len + 1;
|
|
} else if (wrapping && mark_beginbuf == inptr->next)
|
|
mark_beginx += after_break_len;
|
|
#endif /* !NANO_SMALL */
|
|
|
|
/* Place the cursor. */
|
|
reset_cursor();
|
|
|
|
return 1;
|
|
}
|
|
#endif /* !DISABLE_WRAPPING */
|
|
|
|
#ifndef DISABLE_SPELLER
|
|
/* word is misspelled in the file. Let the user replace it. We return
|
|
False if the user cancels. */
|
|
int do_int_spell_fix(const char *word)
|
|
{
|
|
char *save_search;
|
|
char *save_replace;
|
|
filestruct *current_save = current;
|
|
int current_x_save = current_x;
|
|
filestruct *edittop_save = edittop;
|
|
/* Save where we are. */
|
|
int i = 0;
|
|
/* The return value. */
|
|
int reverse_search_set = ISSET(REVERSE_SEARCH);
|
|
#ifndef NANO_SMALL
|
|
int case_sens_set = ISSET(CASE_SENSITIVE);
|
|
int mark_set = ISSET(MARK_ISSET);
|
|
|
|
SET(CASE_SENSITIVE);
|
|
/* Make sure the marking highlight is off during Spell Check */
|
|
UNSET(MARK_ISSET);
|
|
#endif
|
|
/* Make sure Spell Check goes forward only */
|
|
UNSET(REVERSE_SEARCH);
|
|
|
|
/* save the current search/replace strings */
|
|
search_init_globals();
|
|
save_search = last_search;
|
|
save_replace = last_replace;
|
|
|
|
/* set search/replace strings to mis-spelt word */
|
|
last_search = mallocstrcpy(NULL, word);
|
|
last_replace = mallocstrcpy(NULL, word);
|
|
|
|
/* start from the top of file */
|
|
current = fileage;
|
|
current_x = -1;
|
|
|
|
search_last_line = FALSE;
|
|
|
|
/* We find the first whole-word occurrence of word. */
|
|
while (findnextstr(TRUE, TRUE, fileage, -1, word))
|
|
if (is_whole_word(current_x, current->data, word)) {
|
|
edit_refresh();
|
|
|
|
do_replace_highlight(TRUE, word);
|
|
|
|
/* allow replace word to be corrected */
|
|
i = statusq(0, spell_list, word,
|
|
#ifndef NANO_SMALL
|
|
NULL,
|
|
#endif
|
|
_("Edit a replacement"));
|
|
|
|
do_replace_highlight(FALSE, word);
|
|
|
|
if (i != -1 && strcmp(word, answer)) {
|
|
int j = 0;
|
|
|
|
search_last_line = FALSE;
|
|
current_x--;
|
|
do_replace_loop(word, current_save, ¤t_x_save, TRUE, &j);
|
|
}
|
|
|
|
break;
|
|
}
|
|
|
|
/* restore the search/replace strings */
|
|
free(last_search); last_search=save_search;
|
|
free(last_replace); last_replace=save_replace;
|
|
|
|
/* restore where we were */
|
|
current = current_save;
|
|
current_x = current_x_save;
|
|
edittop = edittop_save;
|
|
|
|
/* restore Search/Replace direction */
|
|
if (reverse_search_set)
|
|
SET(REVERSE_SEARCH);
|
|
|
|
#ifndef NANO_SMALL
|
|
if (!case_sens_set)
|
|
UNSET(CASE_SENSITIVE);
|
|
|
|
/* restore marking highlight */
|
|
if (mark_set)
|
|
SET(MARK_ISSET);
|
|
#endif
|
|
|
|
return i != -1;
|
|
}
|
|
|
|
/* Integrated spell checking using 'spell' program. Return value: NULL
|
|
* for normal termination, otherwise the error string. */
|
|
char *do_int_speller(char *tempfile_name)
|
|
{
|
|
char *read_buff, *read_buff_ptr, *read_buff_word;
|
|
size_t pipe_buff_size, read_buff_size, read_buff_read, bytesread;
|
|
int spell_fd[2], sort_fd[2], uniq_fd[2], tempfile_fd = -1;
|
|
pid_t pid_spell, pid_sort, pid_uniq;
|
|
int spell_status, sort_status, uniq_status;
|
|
|
|
/* Create all three pipes up front */
|
|
|
|
if (pipe(spell_fd) == -1 || pipe(sort_fd) == -1 || pipe(uniq_fd) == -1)
|
|
return _("Could not create pipe");
|
|
|
|
statusbar(_("Creating misspelled word list, please wait..."));
|
|
/* A new process to run spell in */
|
|
|
|
if ((pid_spell = fork()) == 0) {
|
|
|
|
/* Child continues, (i.e. future spell process) */
|
|
|
|
close(spell_fd[0]);
|
|
|
|
/* replace the standard in with the tempfile */
|
|
if ((tempfile_fd = open(tempfile_name, O_RDONLY)) == -1)
|
|
goto close_pipes_and_exit;
|
|
|
|
if (dup2(tempfile_fd, STDIN_FILENO) != STDIN_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(tempfile_fd);
|
|
|
|
/* send spell's standard out to the pipe */
|
|
if (dup2(spell_fd[1], STDOUT_FILENO) != STDOUT_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(spell_fd[1]);
|
|
|
|
/* Start spell program, we are using the PATH here!?!? */
|
|
execlp("spell", "spell", NULL);
|
|
|
|
/* Should not be reached, if spell is found!!! */
|
|
exit(1);
|
|
}
|
|
|
|
/* Parent continues here */
|
|
close(spell_fd[1]);
|
|
|
|
/* A new process to run sort in */
|
|
if ((pid_sort = fork()) == 0) {
|
|
|
|
/* Child continues, (i.e. future spell process) */
|
|
/* replace the standard in with output of the old pipe */
|
|
if (dup2(spell_fd[0], STDIN_FILENO) != STDIN_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(spell_fd[0]);
|
|
|
|
/* send sort's standard out to the new pipe */
|
|
if (dup2(sort_fd[1], STDOUT_FILENO) != STDOUT_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(sort_fd[1]);
|
|
|
|
/* Start sort program. Use -f to remove mixed case without having
|
|
to have ANOTHER pipe for tr. If this isn't portable, let me know. */
|
|
execlp("sort", "sort", "-f", NULL);
|
|
|
|
/* Should not be reached, if sort is found */
|
|
exit(1);
|
|
}
|
|
|
|
close(spell_fd[0]);
|
|
close(sort_fd[1]);
|
|
|
|
/* A new process to run uniq in */
|
|
if ((pid_uniq = fork()) == 0) {
|
|
|
|
/* Child continues, (i.e. future uniq process) */
|
|
/* replace the standard in with output of the old pipe */
|
|
if (dup2(sort_fd[0], STDIN_FILENO) != STDIN_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(sort_fd[0]);
|
|
|
|
/* send uniq's standard out to the new pipe */
|
|
if (dup2(uniq_fd[1], STDOUT_FILENO) != STDOUT_FILENO)
|
|
goto close_pipes_and_exit;
|
|
|
|
close(uniq_fd[1]);
|
|
|
|
/* Start uniq program, we are using PATH */
|
|
execlp("uniq", "uniq", NULL);
|
|
|
|
/* Should not be reached, if uniq is found */
|
|
exit(1);
|
|
}
|
|
|
|
close(sort_fd[0]);
|
|
close(uniq_fd[1]);
|
|
|
|
/* Child process was not forked successfully */
|
|
if (pid_spell < 0 || pid_sort < 0 || pid_uniq < 0) {
|
|
close(uniq_fd[0]);
|
|
return _("Could not fork");
|
|
}
|
|
|
|
/* Get system pipe buffer size */
|
|
if ((pipe_buff_size = fpathconf(uniq_fd[0], _PC_PIPE_BUF)) < 1) {
|
|
close(uniq_fd[0]);
|
|
return _("Could not get size of pipe buffer");
|
|
}
|
|
|
|
/* Read-in the returned spelling errors */
|
|
read_buff_read = 0;
|
|
read_buff_size = pipe_buff_size + 1;
|
|
read_buff = read_buff_ptr = charalloc(read_buff_size);
|
|
|
|
while ((bytesread = read(uniq_fd[0], read_buff_ptr, pipe_buff_size)) > 0) {
|
|
read_buff_read += bytesread;
|
|
read_buff_size += pipe_buff_size;
|
|
read_buff = read_buff_ptr = nrealloc(read_buff, read_buff_size);
|
|
read_buff_ptr += read_buff_read;
|
|
|
|
}
|
|
|
|
*read_buff_ptr = (char)NULL;
|
|
close(uniq_fd[0]);
|
|
|
|
/* Process the spelling errors */
|
|
read_buff_word = read_buff_ptr = read_buff;
|
|
|
|
while (*read_buff_ptr != '\0') {
|
|
|
|
if ((*read_buff_ptr == '\n') || (*read_buff_ptr == '\r')) {
|
|
*read_buff_ptr = (char)NULL;
|
|
if (read_buff_word != read_buff_ptr) {
|
|
if (!do_int_spell_fix(read_buff_word)) {
|
|
read_buff_word = read_buff_ptr;
|
|
break;
|
|
}
|
|
}
|
|
read_buff_word = read_buff_ptr + 1;
|
|
}
|
|
read_buff_ptr++;
|
|
}
|
|
|
|
/* special case where last word doesn't end with \n or \r */
|
|
if (read_buff_word != read_buff_ptr)
|
|
do_int_spell_fix(read_buff_word);
|
|
|
|
free(read_buff);
|
|
replace_abort();
|
|
edit_refresh();
|
|
|
|
/* Process end of spell process */
|
|
|
|
waitpid(pid_spell, &spell_status, 0);
|
|
waitpid(pid_sort, &sort_status, 0);
|
|
waitpid(pid_uniq, &uniq_status, 0);
|
|
|
|
if (WIFEXITED(spell_status) == 0 || WEXITSTATUS(spell_status))
|
|
return _("Error invoking \"spell\"");
|
|
|
|
if (WIFEXITED(sort_status) == 0 || WEXITSTATUS(sort_status))
|
|
return _("Error invoking \"sort -f\"");
|
|
|
|
if (WIFEXITED(uniq_status) == 0 || WEXITSTATUS(uniq_status))
|
|
return _("Error invoking \"uniq\"");
|
|
|
|
/* Otherwise... */
|
|
return NULL;
|
|
|
|
close_pipes_and_exit:
|
|
|
|
/* Don't leak any handles */
|
|
close(tempfile_fd);
|
|
close(spell_fd[0]);
|
|
close(spell_fd[1]);
|
|
close(sort_fd[0]);
|
|
close(sort_fd[1]);
|
|
close(uniq_fd[0]);
|
|
close(uniq_fd[1]);
|
|
exit(1);
|
|
}
|
|
|
|
/* External spell checking. Return value: NULL for normal termination,
|
|
* otherwise the error string. */
|
|
char *do_alt_speller(char *tempfile_name)
|
|
{
|
|
int alt_spell_status, lineno_cur = current->lineno;
|
|
int x_cur = current_x, y_cur = current_y, pww_cur = placewewant;
|
|
pid_t pid_spell;
|
|
char *ptr;
|
|
static int arglen = 3;
|
|
static char **spellargs = (char **)NULL;
|
|
#ifndef NANO_SMALL
|
|
int mark_set = ISSET(MARK_ISSET);
|
|
int mbb_lineno_cur = 0;
|
|
/* We're going to close the current file, and open the output of
|
|
the alternate spell command. The line that mark_beginbuf
|
|
points to will be freed, so we save the line number and restore
|
|
afterwards. */
|
|
|
|
if (mark_set) {
|
|
mbb_lineno_cur = mark_beginbuf->lineno;
|
|
UNSET(MARK_ISSET);
|
|
}
|
|
#endif
|
|
|
|
endwin();
|
|
|
|
/* Set up an argument list to pass the execvp function */
|
|
if (spellargs == NULL) {
|
|
spellargs = nmalloc(arglen * sizeof(char *));
|
|
|
|
spellargs[0] = strtok(alt_speller, " ");
|
|
while ((ptr = strtok(NULL, " ")) != NULL) {
|
|
arglen++;
|
|
spellargs = nrealloc(spellargs, arglen * sizeof(char *));
|
|
spellargs[arglen - 3] = ptr;
|
|
}
|
|
spellargs[arglen - 1] = NULL;
|
|
}
|
|
spellargs[arglen - 2] = tempfile_name;
|
|
|
|
/* Start a new process for the alternate speller */
|
|
if ((pid_spell = fork()) == 0) {
|
|
/* Start alternate spell program; we are using the PATH here!?!? */
|
|
execvp(spellargs[0], spellargs);
|
|
|
|
/* Should not be reached, if alternate speller is found!!! */
|
|
exit(1);
|
|
}
|
|
|
|
/* Could not fork?? */
|
|
if (pid_spell < 0)
|
|
return _("Could not fork");
|
|
|
|
/* Wait for alternate speller to complete */
|
|
|
|
wait(&alt_spell_status);
|
|
if (!WIFEXITED(alt_spell_status) || WEXITSTATUS(alt_spell_status) != 0) {
|
|
char *altspell_error = NULL;
|
|
char *invoke_error = _("Could not invoke \"%s\"");
|
|
int msglen = strlen(invoke_error) + strlen(alt_speller) + 2;
|
|
|
|
altspell_error = charalloc(msglen);
|
|
snprintf(altspell_error, msglen, invoke_error, alt_speller);
|
|
return altspell_error;
|
|
}
|
|
|
|
refresh();
|
|
free_filestruct(fileage);
|
|
global_init(1);
|
|
open_file(tempfile_name, 0, 1);
|
|
|
|
#ifndef NANO_SMALL
|
|
if (mark_set) {
|
|
do_gotopos(mbb_lineno_cur, mark_beginx, y_cur, 0);
|
|
mark_beginbuf = current;
|
|
mark_beginx = current_x;
|
|
/* In case the line got shorter, assign mark_beginx. */
|
|
SET(MARK_ISSET);
|
|
}
|
|
#endif
|
|
|
|
/* go back to the old position, mark the file as modified, and make
|
|
sure that the titlebar is refreshed */
|
|
do_gotopos(lineno_cur, x_cur, y_cur, pww_cur);
|
|
set_modified();
|
|
clearok(topwin, FALSE);
|
|
titlebar(NULL);
|
|
|
|
return NULL;
|
|
}
|
|
#endif
|
|
|
|
int do_spell(void)
|
|
{
|
|
#ifdef DISABLE_SPELLER
|
|
nano_disabled_msg();
|
|
return TRUE;
|
|
#else
|
|
char *temp, *spell_msg;
|
|
|
|
if ((temp = safe_tempnam(0, "nano.")) == NULL) {
|
|
statusbar(_("Could not create a temporary filename: %s"),
|
|
strerror(errno));
|
|
return 0;
|
|
}
|
|
|
|
if (write_file(temp, 1, 0, 0) == -1) {
|
|
statusbar(_("Spell checking failed: unable to write temp file!"));
|
|
free(temp);
|
|
return 0;
|
|
}
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
/* update the current open_files entry before spell-checking, in case
|
|
any problems occur */
|
|
add_open_file(1);
|
|
#endif
|
|
|
|
if (alt_speller != NULL)
|
|
spell_msg = do_alt_speller(temp);
|
|
else
|
|
spell_msg = do_int_speller(temp);
|
|
remove(temp);
|
|
free(temp);
|
|
|
|
if (spell_msg != NULL) {
|
|
statusbar(_("Spell checking failed: %s"), spell_msg);
|
|
return 0;
|
|
}
|
|
|
|
statusbar(_("Finished checking spelling"));
|
|
return 1;
|
|
#endif
|
|
}
|
|
|
|
#if !defined(DISABLE_WRAPPING) && !defined(NANO_SMALL) || !defined(DISABLE_JUSTIFY)
|
|
/* The "indentation" of a line is the white-space between the quote part
|
|
* and the non-white-space of the line. */
|
|
size_t indent_length(const char *line)
|
|
{
|
|
size_t len = 0;
|
|
|
|
assert(line != NULL);
|
|
while (*line == ' ' || *line == '\t') {
|
|
line++;
|
|
len++;
|
|
}
|
|
return len;
|
|
}
|
|
#endif /* !DISABLE_WRAPPING && !NANO_SMALL || !DISABLE_JUSTIFY */
|
|
|
|
#ifndef DISABLE_JUSTIFY
|
|
/* justify_format() replaces Tab by Space and multiple spaces by 1 (except
|
|
* it maintains 2 after a . ! or ?). Note the terminating \0
|
|
* counts as a space.
|
|
*
|
|
* If !changes_allowed and justify_format() needs to make a change, it
|
|
* returns 1, otherwise returns 0.
|
|
*
|
|
* If changes_allowed, justify_format() might make line->data
|
|
* shorter, and change the actual pointer with null_at().
|
|
*
|
|
* justify_format() will not look at the first skip characters of line.
|
|
* skip should be at most strlen(line->data). The skip+1st character must
|
|
* not be whitespace. */
|
|
int justify_format(int changes_allowed, filestruct *line, size_t skip)
|
|
{
|
|
const char *punct = ".?!";
|
|
const char *brackets = "'\")}]>";
|
|
char *back, *front;
|
|
|
|
/* These four asserts are assumptions about the input data. */
|
|
assert(line != NULL);
|
|
assert(line->data != NULL);
|
|
assert(skip <= strlen(line->data));
|
|
assert(line->data[skip] != ' ' && line->data[skip] != '\t');
|
|
|
|
back = line->data + skip;
|
|
front = back;
|
|
for (; *front; front++) {
|
|
int remove_space = 0;
|
|
/* Do we want to remove this space? */
|
|
|
|
if (*front == '\t') {
|
|
if (!changes_allowed)
|
|
return 1;
|
|
*front = ' ';
|
|
}
|
|
/* these tests are safe since line->data + skip is not a space */
|
|
if (*front == ' ' && *(front - 1) == ' ') {
|
|
const char *bob = front - 2;
|
|
|
|
remove_space = 1;
|
|
for (bob = front - 2; bob >= line->data + skip; bob--) {
|
|
if (strchr(punct, *bob) != NULL) {
|
|
remove_space = 0;
|
|
break;
|
|
}
|
|
if (strchr(brackets, *bob) == NULL)
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (remove_space) {
|
|
/* Now *front is a space we want to remove. We do that by
|
|
* simply failing to assign it to *back. */
|
|
if (!changes_allowed)
|
|
return 1;
|
|
#ifndef NANO_SMALL
|
|
if (mark_beginbuf == line && back - line->data < mark_beginx)
|
|
mark_beginx--;
|
|
#endif
|
|
} else {
|
|
*back = *front;
|
|
back++;
|
|
}
|
|
}
|
|
|
|
/* Remove spaces from the end of the line, except maintain 1 after a
|
|
* sentence punctuation. */
|
|
while (line->data < back && *(back - 1) == ' ')
|
|
back--;
|
|
if (line->data < back && *back == ' ' &&
|
|
strchr(punct, *(back - 1)) != NULL)
|
|
back++;
|
|
if (!changes_allowed && back != front)
|
|
return 1;
|
|
|
|
/* This assert merely documents a fact about the loop above. */
|
|
assert(changes_allowed != 0 || back == front);
|
|
|
|
/* Now back is the new end of line->data. */
|
|
if (back != front) {
|
|
totsize += back - line->data - strlen(line->data);
|
|
null_at(&line->data, back - line->data);
|
|
#ifndef NANO_SMALL
|
|
if (mark_beginbuf == line && back - line->data < mark_beginx)
|
|
mark_beginx = back - line->data;
|
|
#endif
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
/* The "quote part" of a line is the largest initial substring matching
|
|
* the quote string. This function returns the length of the quote part
|
|
* of the given line.
|
|
*
|
|
* Note that if !HAVE_REGEX_H then we match concatenated copies of
|
|
* quotestr. */
|
|
#ifdef HAVE_REGEX_H
|
|
size_t quote_length(const char *line, const regex_t *qreg)
|
|
{
|
|
regmatch_t matches;
|
|
int rc = regexec(qreg, line, 1, &matches, 0);
|
|
|
|
if (rc == REG_NOMATCH || matches.rm_so == (regoff_t) -1)
|
|
return 0;
|
|
/* matches.rm_so should be 0, since the quote string should start with
|
|
* the caret ^. */
|
|
return matches.rm_eo;
|
|
}
|
|
#else /* !HAVE_REGEX_H */
|
|
size_t quote_length(const char *line)
|
|
{
|
|
size_t qdepth = 0;
|
|
size_t qlen = strlen(quotestr);
|
|
|
|
/* Compute quote depth level */
|
|
while (!strcmp(line + qdepth, quotestr))
|
|
qdepth += qlen;
|
|
return qdepth;
|
|
}
|
|
#endif /* !HAVE_REGEX_H */
|
|
|
|
/* a_line and b_line are lines of text. The quotation part of a_line is
|
|
* the first a_quote characters. Check that the quotation part of
|
|
* b_line is the same. */
|
|
int quotes_match(const char *a_line, size_t a_quote,
|
|
IFREG(const char *b_line, const regex_t *qreg))
|
|
{
|
|
/* Here is the assumption about a_quote: */
|
|
assert(a_quote == quote_length(IFREG(a_line, qreg)));
|
|
return a_quote == quote_length(IFREG(b_line, qreg)) &&
|
|
!strncmp(a_line, b_line, a_quote);
|
|
}
|
|
|
|
/* We assume a_line and b_line have no quote part. Then, we return whether
|
|
* b_line could follow a_line in a paragraph. */
|
|
size_t indents_match(const char *a_line, size_t a_indent,
|
|
const char *b_line, size_t b_indent)
|
|
{
|
|
assert(a_indent == indent_length(a_line));
|
|
assert(b_indent == indent_length(b_line));
|
|
|
|
return b_indent <= a_indent && !strncmp(a_line, b_line, b_indent);
|
|
}
|
|
|
|
/* Put the next par_len lines, starting with first_line, in the cut
|
|
* buffer. We assume there are enough lines after first_line. We leave
|
|
* copies of the lines in place, too. We return the new copy of
|
|
* first_line. */
|
|
filestruct *backup_lines(filestruct *first_line, size_t par_len,
|
|
size_t quote_len)
|
|
{
|
|
/* We put the original lines, not copies, into the cut buffer, just
|
|
* out of a misguided sense of consistency, so if you un-cut, you
|
|
* get the actual same paragraph back, not a copy. */
|
|
filestruct *alice = first_line;
|
|
|
|
set_modified();
|
|
cutbuffer = NULL;
|
|
for(; par_len > 0; par_len--) {
|
|
filestruct *bob = copy_node(alice);
|
|
|
|
if (alice == first_line)
|
|
first_line = bob;
|
|
if (alice == current)
|
|
current = bob;
|
|
if (alice == edittop)
|
|
edittop = bob;
|
|
#ifndef NANO_SMALL
|
|
if (alice == mark_beginbuf)
|
|
mark_beginbuf = bob;
|
|
#endif
|
|
justify_format(1, bob,
|
|
quote_len + indent_length(bob->data + quote_len));
|
|
|
|
assert(alice != NULL && bob != NULL);
|
|
add_to_cutbuffer(alice);
|
|
splice_node(bob->prev, bob, bob->next);
|
|
alice = bob->next;
|
|
}
|
|
return first_line;
|
|
}
|
|
|
|
/* Is it possible to break line at or before goal? */
|
|
int breakable(const char *line, int goal)
|
|
{
|
|
for(; *line != '\0' && goal >= 0; line++) {
|
|
if (*line == ' ' || *line == '\t')
|
|
return TRUE;
|
|
|
|
if (is_cntrl_char(*line) != 0)
|
|
goal -= 2;
|
|
else
|
|
goal -= 1;
|
|
}
|
|
/* If goal is not negative, the whole line (one word) was short
|
|
* enough. */
|
|
return goal >= 0;
|
|
}
|
|
|
|
/* We are trying to break a chunk off line. We find the last space such
|
|
* that the display length to there is at most goal + 1. If there is
|
|
* no such space, and force is not 0, then we find the first space.
|
|
* Anyway, we then take the last space in that group of spaces. The
|
|
* terminating '\0' counts as a space. */
|
|
int break_line(const char *line, int goal, int force)
|
|
{
|
|
/* Note that we use int instead of size_t, since goal is at most COLS,
|
|
* the screen width, which will always be reasonably small. */
|
|
int space_loc = -1;
|
|
/* Current tentative return value. Index of the last space we
|
|
* found with short enough display width. */
|
|
int cur_loc = 0;
|
|
/* Current index in line */
|
|
|
|
assert(line != NULL);
|
|
for(; *line != '\0' && goal >= 0; line++, cur_loc++) {
|
|
if (*line == ' ')
|
|
space_loc = cur_loc;
|
|
assert(*line != '\t');
|
|
|
|
if (is_cntrl_char(*line))
|
|
goal -= 2;
|
|
else
|
|
goal--;
|
|
}
|
|
if (goal >= 0)
|
|
/* In fact, the whole line displays shorter than goal. */
|
|
return cur_loc;
|
|
if (space_loc == -1) {
|
|
/* No space found short enough. */
|
|
if (force)
|
|
for(; *line != '\0'; line++, cur_loc++)
|
|
if (*line == ' ' && *(line + 1) != ' ')
|
|
return cur_loc;
|
|
return -1;
|
|
}
|
|
/* Perhaps the character after space_loc is a space. But because
|
|
* of justify_format(), there can be only two adjacent. */
|
|
if (*(line - cur_loc + space_loc + 1) == ' ' ||
|
|
*(line - cur_loc + space_loc + 1) == '\0')
|
|
space_loc++;
|
|
return space_loc;
|
|
}
|
|
#endif /* !DISABLE_JUSTIFY */
|
|
|
|
/* This function justifies the current paragraph. */
|
|
int do_justify(void)
|
|
{
|
|
#ifdef DISABLE_JUSTIFY
|
|
nano_disabled_msg();
|
|
return 1;
|
|
#else
|
|
|
|
/* To explain the justifying algorithm, I first need to define some
|
|
* phrases about paragraphs and quotation:
|
|
* A line of text consists of a "quote part", followed by an
|
|
* "indentation part", followed by text. The functions quote_length()
|
|
* and indent_length() calculate these parts.
|
|
*
|
|
* A line is "part of a paragraph" if it has a part not in the quote
|
|
* part or the indentation.
|
|
*
|
|
* A line is "the beginning of a paragraph" if it is part of a paragraph
|
|
* and
|
|
* 1) it is the top line of the file, or
|
|
* 2) the line above it is not part of a paragraph, or
|
|
* 3) the line above it does not have precisely the same quote
|
|
* part, or
|
|
* 4) the indentation of this line is not an initial substring of the
|
|
* indentation of the previous line, or
|
|
* 5) this line has no quote part and some indentation, and
|
|
* AUTOINDENT is not set.
|
|
* The reason for number 5) is that if AUTOINDENT is not set, then an
|
|
* indented line is expected to start a paragraph, like in books. Thus,
|
|
* nano can justify an indented paragraph only if AUTOINDENT is turned
|
|
* on.
|
|
*
|
|
* A contiguous set of lines is a "paragraph" if each line is part of
|
|
* a paragraph and only the first line is the beginning of a paragraph.
|
|
*/
|
|
|
|
size_t quote_len;
|
|
/* Length of the initial quotation of the paragraph we justify. */
|
|
size_t par_len;
|
|
/* Number of lines in that paragraph. */
|
|
filestruct *first_mod_line = NULL;
|
|
/* Will be the first line of the resulting justified paragraph
|
|
* that differs from the original. For restoring after uncut. */
|
|
filestruct *last_par_line = current;
|
|
/* Will be the last line of the result, also for uncut. */
|
|
filestruct *cutbuffer_save = cutbuffer;
|
|
/* When the paragraph gets modified, all lines from the changed
|
|
* one down are stored in the cut buffer. We back up the original
|
|
* to restore it later. */
|
|
|
|
/* We save these global variables to be restored if the user
|
|
* unjustifies. Note we don't need to save totlines. */
|
|
int current_x_save = current_x;
|
|
int current_y_save = current_y;
|
|
filestruct *current_save = current;
|
|
int flags_save = flags;
|
|
long totsize_save = totsize;
|
|
filestruct *edittop_save = edittop;
|
|
filestruct *editbot_save = editbot;
|
|
#ifndef NANO_SMALL
|
|
filestruct *mark_beginbuf_save = mark_beginbuf;
|
|
int mark_beginx_save = mark_beginx;
|
|
#endif
|
|
|
|
size_t indent_len; /* generic indentation length */
|
|
filestruct *line; /* generic line of text */
|
|
size_t i; /* generic loop variable */
|
|
|
|
#ifdef HAVE_REGEX_H
|
|
regex_t qreg; /* qreg is the compiled quotation regexp.
|
|
* We no longer care about quotestr. */
|
|
int rc = regcomp(&qreg, quotestr, REG_EXTENDED);
|
|
|
|
if (rc) {
|
|
size_t size = regerror(rc, &qreg, NULL, 0);
|
|
char *strerror = charalloc(size);
|
|
|
|
regerror(rc, &qreg, strerror, size);
|
|
statusbar(_("Bad quote string %s: %s"), quotestr, strerror);
|
|
free(strerror);
|
|
return -1;
|
|
}
|
|
#endif
|
|
|
|
/* Here is an assumption that is always true anyway. */
|
|
assert(current != NULL);
|
|
|
|
/* Here we find the first line of the paragraph to justify. If the
|
|
* current line is in a paragraph, then we move back to the first line.
|
|
* Otherwise we move down to the first line that is in a paragraph. */
|
|
quote_len = quote_length(IFREG(current->data, &qreg));
|
|
indent_len = indent_length(current->data + quote_len);
|
|
|
|
current_x = 0;
|
|
if (current->data[quote_len + indent_len] != '\0') {
|
|
/* This line is part of a paragraph. So we must search back to
|
|
* the first line of this paragraph. First we check items 1) and
|
|
* 3) above. */
|
|
while (current->prev != NULL && quotes_match(current->data,
|
|
quote_len, IFREG(current->prev->data, &qreg))) {
|
|
size_t temp_id_len =
|
|
indent_length(current->prev->data + quote_len);
|
|
/* The indentation length of the previous line. */
|
|
|
|
/* Is this line the beginning of a paragraph, according to
|
|
items 2), 5), or 4) above? If so, stop. */
|
|
if (current->prev->data[quote_len + temp_id_len] == '\0' ||
|
|
(quote_len == 0 && indent_len > 0
|
|
#ifndef NANO_SMALL
|
|
&& !ISSET(AUTOINDENT)
|
|
#endif
|
|
) ||
|
|
!indents_match(current->prev->data + quote_len,
|
|
temp_id_len, current->data + quote_len, indent_len))
|
|
break;
|
|
indent_len = temp_id_len;
|
|
current = current->prev;
|
|
current_y--;
|
|
}
|
|
} else {
|
|
/* This line is not part of a paragraph. Move down until we get
|
|
* to a non "blank" line. */
|
|
do {
|
|
/* There is no next paragraph, so nothing to justify. */
|
|
if (current->next == NULL) {
|
|
placewewant = 0;
|
|
edit_refresh();
|
|
#ifdef HAVE_REGEX_H
|
|
regfree(&qreg);
|
|
#endif
|
|
return 0;
|
|
}
|
|
current = current->next;
|
|
current_y++;
|
|
quote_len = quote_length(IFREG(current->data, &qreg));
|
|
indent_len = indent_length(current->data + quote_len);
|
|
} while (current->data[quote_len + indent_len] == '\0');
|
|
}
|
|
/* Now current is the first line of the paragraph, and quote_len
|
|
* is the quotation length of that line. */
|
|
|
|
/* Next step, compute par_len, the number of lines in this paragraph. */
|
|
line = current;
|
|
par_len = 1;
|
|
indent_len = indent_length(line->data + quote_len);
|
|
|
|
while (line->next != NULL && quotes_match(current->data, quote_len,
|
|
IFREG(line->next->data, &qreg))) {
|
|
size_t temp_id_len = indent_length(line->next->data + quote_len);
|
|
|
|
if (!indents_match(line->data + quote_len, indent_len,
|
|
line->next->data + quote_len, temp_id_len) ||
|
|
line->next->data[quote_len + temp_id_len] == '\0' ||
|
|
(quote_len == 0 && temp_id_len > 0
|
|
#ifndef NANO_SMALL
|
|
&& !ISSET(AUTOINDENT)
|
|
#endif
|
|
))
|
|
break;
|
|
indent_len = temp_id_len;
|
|
line = line->next;
|
|
par_len++;
|
|
}
|
|
#ifdef HAVE_REGEX_H
|
|
/* We no longer need to check quotation. */
|
|
regfree(&qreg);
|
|
#endif
|
|
/* Now par_len is the number of lines in this paragraph. Should never
|
|
* call quotes_match() or quote_length() again. */
|
|
|
|
/* Next step, we loop through the lines of this paragraph, justifying
|
|
* each one individually. */
|
|
for(; par_len > 0; current_y++, par_len--) {
|
|
size_t line_len;
|
|
size_t display_len;
|
|
/* The width of current in screen columns. */
|
|
int break_pos;
|
|
/* Where we will break the line. */
|
|
|
|
indent_len = indent_length(current->data + quote_len) +
|
|
quote_len;
|
|
/* justify_format() removes excess spaces from the line, and
|
|
* changes tabs to spaces. The first argument, 0, means don't
|
|
* change the line, just say whether there are changes to be
|
|
* made. If there are, we do backup_lines(), which copies the
|
|
* original paragraph to the cutbuffer for unjustification, and
|
|
* then calls justify_format() on the remaining lines. */
|
|
if (first_mod_line == NULL && justify_format(0, current, indent_len))
|
|
first_mod_line = backup_lines(current, par_len, quote_len);
|
|
|
|
line_len = strlen(current->data);
|
|
display_len = strlenpt(current->data);
|
|
|
|
if (display_len > fill) {
|
|
/* The line is too long. Try to wrap it to the next. */
|
|
break_pos = break_line(current->data + indent_len,
|
|
fill - strnlenpt(current->data, indent_len),
|
|
1);
|
|
if (break_pos == -1 || break_pos + indent_len == line_len)
|
|
/* We can't break the line, or don't need to, so just go
|
|
* on to the next. */
|
|
goto continue_loc;
|
|
break_pos += indent_len;
|
|
assert(break_pos < line_len);
|
|
/* If we haven't backed up the paragraph, do it now. */
|
|
if (first_mod_line == NULL)
|
|
first_mod_line = backup_lines(current, par_len, quote_len);
|
|
if (par_len == 1) {
|
|
/* There is no next line in this paragraph. We make a new
|
|
* line and copy text after break_pos into it. */
|
|
splice_node(current, make_new_node(current),
|
|
current->next);
|
|
/* In a non-quoted paragraph, we copy the indent only if
|
|
AUTOINDENT is turned on. */
|
|
if (quote_len == 0)
|
|
#ifndef NANO_SMALL
|
|
if (!ISSET(AUTOINDENT))
|
|
#endif
|
|
indent_len = 0;
|
|
current->next->data = charalloc(indent_len + line_len -
|
|
break_pos);
|
|
strncpy(current->next->data, current->data,
|
|
indent_len);
|
|
strcpy(current->next->data + indent_len,
|
|
current->data + break_pos + 1);
|
|
assert(strlen(current->next->data) ==
|
|
indent_len + line_len - break_pos - 1);
|
|
totlines++;
|
|
totsize += indent_len;
|
|
par_len++;
|
|
} else {
|
|
size_t next_line_len = strlen(current->next->data);
|
|
|
|
indent_len = quote_len +
|
|
indent_length(current->next->data + quote_len);
|
|
current->next->data = (char *)nrealloc(current->next->data,
|
|
sizeof(char) * (next_line_len + line_len -
|
|
break_pos + 1));
|
|
|
|
memmove(current->next->data + indent_len + line_len - break_pos,
|
|
current->next->data + indent_len,
|
|
next_line_len - indent_len + 1);
|
|
strcpy(current->next->data + indent_len,
|
|
current->data + break_pos + 1);
|
|
current->next->data[indent_len + line_len - break_pos - 1]
|
|
= ' ';
|
|
#ifndef NANO_SMALL
|
|
if (mark_beginbuf == current->next) {
|
|
if (mark_beginx < indent_len)
|
|
mark_beginx = indent_len;
|
|
mark_beginx += line_len - break_pos;
|
|
}
|
|
#endif
|
|
}
|
|
#ifndef NANO_SMALL
|
|
if (mark_beginbuf == current && mark_beginx > break_pos) {
|
|
mark_beginbuf = current->next;
|
|
mark_beginx -= break_pos + 1 - indent_len;
|
|
}
|
|
#endif
|
|
null_at(¤t->data, break_pos);
|
|
current = current->next;
|
|
} else if (display_len < fill && par_len > 1) {
|
|
size_t next_line_len;
|
|
|
|
indent_len = quote_len +
|
|
indent_length(current->next->data + quote_len);
|
|
/* If we can't pull a word from the next line up to this one,
|
|
* just go on. */
|
|
if (!breakable(current->next->data + indent_len,
|
|
fill - display_len - 1))
|
|
goto continue_loc;
|
|
|
|
/* If we haven't backed up the paragraph, do it now. */
|
|
if (first_mod_line == NULL)
|
|
first_mod_line = backup_lines(current, par_len, quote_len);
|
|
|
|
break_pos = break_line(current->next->data + indent_len,
|
|
fill - display_len - 1, FALSE);
|
|
assert(break_pos != -1);
|
|
|
|
current->data = (char *)nrealloc(current->data,
|
|
line_len + break_pos + 2);
|
|
current->data[line_len] = ' ';
|
|
strncpy(current->data + line_len + 1,
|
|
current->next->data + indent_len, break_pos);
|
|
current->data[line_len + break_pos + 1] = '\0';
|
|
#ifndef NANO_SMALL
|
|
if (mark_beginbuf == current->next) {
|
|
if (mark_beginx < indent_len + break_pos) {
|
|
mark_beginbuf = current;
|
|
if (mark_beginx <= indent_len)
|
|
mark_beginx = line_len + 1;
|
|
else
|
|
mark_beginx = line_len + 1 + mark_beginx - indent_len;
|
|
} else
|
|
mark_beginx -= break_pos + 1;
|
|
}
|
|
#endif
|
|
next_line_len = strlen(current->next->data);
|
|
if (indent_len + break_pos == next_line_len) {
|
|
line = current->next;
|
|
|
|
/* Don't destroy edittop! */
|
|
if (line == edittop)
|
|
edittop = current;
|
|
|
|
unlink_node(line);
|
|
delete_node(line);
|
|
totlines--;
|
|
totsize -= indent_len;
|
|
current_y--;
|
|
} else {
|
|
memmove(current->next->data + indent_len,
|
|
current->next->data + indent_len + break_pos + 1,
|
|
next_line_len - break_pos - indent_len);
|
|
null_at(¤t->next->data,
|
|
next_line_len - break_pos);
|
|
current = current->next;
|
|
}
|
|
} else
|
|
continue_loc:
|
|
current = current->next;
|
|
}
|
|
/* We are now done justifying the paragraph. There are cleanup things to
|
|
* do, and we check for unjustify. */
|
|
|
|
/* totlines, totsize, and current_y have been maintained above. We
|
|
* now set last_par_line to the new end of the paragraph, update
|
|
* fileage, set current_x. Also, edit_refresh() needs the line
|
|
* numbers to be right, so we renumber(). */
|
|
last_par_line = current->prev;
|
|
if (first_mod_line != NULL) {
|
|
if (first_mod_line->prev == NULL)
|
|
fileage = first_mod_line;
|
|
renumber(first_mod_line);
|
|
}
|
|
|
|
if (current_y > editwinrows - 1)
|
|
edit_update(current, CENTER);
|
|
else
|
|
edit_refresh();
|
|
|
|
statusbar(_("Can now UnJustify!"));
|
|
/* Change the shortcut list to display the unjustify code */
|
|
shortcut_init(1);
|
|
display_main_list();
|
|
reset_cursor();
|
|
|
|
/* Now get a keystroke and see if it's unjustify; if not, unget the
|
|
* keystroke and return. */
|
|
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
/* If it was a mouse click, parse it with do_mouse() and it might
|
|
* become the unjustify key. Else give it back to the input stream. */
|
|
if ((i = wgetch(edit)) == KEY_MOUSE)
|
|
do_mouse();
|
|
else
|
|
ungetch(i);
|
|
#endif
|
|
|
|
if ((i = wgetch(edit)) != NANO_UNJUSTIFY_KEY) {
|
|
ungetch(i);
|
|
/* Did we back up anything at all? */
|
|
if (cutbuffer != cutbuffer_save)
|
|
free_filestruct(cutbuffer);
|
|
placewewant = 0;
|
|
} else {
|
|
/* Else restore the justify we just did (ungrateful user!) */
|
|
current = current_save;
|
|
current_x = current_x_save;
|
|
current_y = current_y_save;
|
|
edittop = edittop_save;
|
|
editbot = editbot_save;
|
|
if (first_mod_line != NULL) {
|
|
filestruct *cutbottom = get_cutbottom();
|
|
|
|
/* Splice the cutbuffer back into the file. */
|
|
cutbottom->next = last_par_line->next;
|
|
cutbottom->next->prev = cutbottom;
|
|
/* The line numbers after the end of the paragraph have
|
|
* been changed, so we change them back. */
|
|
renumber(cutbottom->next);
|
|
if (first_mod_line->prev != NULL) {
|
|
cutbuffer->prev = first_mod_line->prev;
|
|
cutbuffer->prev->next = cutbuffer;
|
|
} else
|
|
fileage = cutbuffer;
|
|
cutbuffer = NULL;
|
|
|
|
last_par_line->next = NULL;
|
|
free_filestruct(first_mod_line);
|
|
|
|
/* Restore global variables from before justify */
|
|
totsize = totsize_save;
|
|
totlines = filebot->lineno;
|
|
#ifndef NANO_SMALL
|
|
mark_beginbuf = mark_beginbuf_save;
|
|
mark_beginx = mark_beginx_save;
|
|
#endif
|
|
flags = flags_save;
|
|
if (!ISSET(MODIFIED)) {
|
|
titlebar(NULL);
|
|
wrefresh(topwin);
|
|
}
|
|
}
|
|
edit_refresh();
|
|
}
|
|
UNSET(KEEP_CUTBUFFER);
|
|
cutbuffer = cutbuffer_save;
|
|
blank_statusbar_refresh();
|
|
/* display shortcut list without UnCut */
|
|
shortcut_init(0);
|
|
display_main_list();
|
|
|
|
return 0;
|
|
#endif
|
|
}
|
|
|
|
int do_exit(void)
|
|
{
|
|
int i;
|
|
|
|
if (!ISSET(MODIFIED)) {
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (!close_open_file()) {
|
|
display_main_list();
|
|
return 1;
|
|
}
|
|
else
|
|
#endif
|
|
finish(0);
|
|
}
|
|
|
|
if (ISSET(TEMP_OPT)) {
|
|
i = 1;
|
|
} else {
|
|
i = do_yesno(0, 0,
|
|
_
|
|
("Save modified buffer (ANSWERING \"No\" WILL DESTROY CHANGES) ? "));
|
|
}
|
|
|
|
#ifdef DEBUG
|
|
dump_buffer(fileage);
|
|
#endif
|
|
|
|
if (i == 1) {
|
|
if (do_writeout(filename, 1, 0) > 0) {
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (!close_open_file()) {
|
|
display_main_list();
|
|
return 1;
|
|
}
|
|
else
|
|
#endif
|
|
finish(0);
|
|
}
|
|
} else if (i == 0) {
|
|
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
if (!close_open_file()) {
|
|
display_main_list();
|
|
return 1;
|
|
}
|
|
else
|
|
#endif
|
|
finish(0);
|
|
} else
|
|
statusbar(_("Cancelled"));
|
|
|
|
display_main_list();
|
|
return 1;
|
|
}
|
|
|
|
void signal_init(void)
|
|
{
|
|
#ifdef _POSIX_VDISABLE
|
|
struct termios term;
|
|
#endif
|
|
|
|
/* Trap SIGINT and SIGQUIT cuz we want them to do useful things. */
|
|
memset(&act, 0, sizeof(struct sigaction));
|
|
act.sa_handler = SIG_IGN;
|
|
sigaction(SIGINT, &act, NULL);
|
|
|
|
/* Trap SIGHUP and SIGTERM cuz we want to write the file out. */
|
|
act.sa_handler = handle_hupterm;
|
|
sigaction(SIGHUP, &act, NULL);
|
|
sigaction(SIGTERM, &act, NULL);
|
|
|
|
#ifndef NANO_SMALL
|
|
act.sa_handler = handle_sigwinch;
|
|
sigaction(SIGWINCH, &act, NULL);
|
|
#endif
|
|
|
|
#ifdef _POSIX_VDISABLE
|
|
tcgetattr(0, &term);
|
|
|
|
if (!ISSET(PRESERVE)) {
|
|
/* Ignore ^S and ^Q, much to Chris' chagrin */
|
|
term.c_cc[VSTOP] = _POSIX_VDISABLE;
|
|
term.c_cc[VSTART] = _POSIX_VDISABLE;
|
|
}
|
|
#ifdef VDSUSP
|
|
term.c_cc[VDSUSP] = _POSIX_VDISABLE;
|
|
#endif /* VDSUSP */
|
|
|
|
#endif /* _POSIX_VDISABLE */
|
|
|
|
if (!ISSET(SUSPEND)) {
|
|
/* Insane! */
|
|
#ifdef _POSIX_VDISABLE
|
|
term.c_cc[VSUSP] = _POSIX_VDISABLE;
|
|
#else
|
|
act.sa_handler = SIG_IGN;
|
|
sigaction(SIGTSTP, &act, NULL);
|
|
#endif
|
|
} else {
|
|
/* If we don't do this, it seems other stuff interrupts the
|
|
suspend handler! Try using nano with mutt without this
|
|
line. */
|
|
sigfillset(&act.sa_mask);
|
|
|
|
act.sa_handler = do_suspend;
|
|
sigaction(SIGTSTP, &act, NULL);
|
|
|
|
act.sa_handler = do_cont;
|
|
sigaction(SIGCONT, &act, NULL);
|
|
}
|
|
|
|
#ifdef _POSIX_VDISABLE
|
|
tcsetattr(0, TCSANOW, &term);
|
|
#endif
|
|
}
|
|
|
|
/* Handler for SIGHUP and SIGTERM */
|
|
RETSIGTYPE handle_hupterm(int signal)
|
|
{
|
|
die(_("Received SIGHUP or SIGTERM\n"));
|
|
}
|
|
|
|
/* What do we do when we catch the suspend signal */
|
|
RETSIGTYPE do_suspend(int signal)
|
|
{
|
|
endwin();
|
|
printf("\n\n\n\n\nUse \"fg\" to return to nano\n");
|
|
fflush(stdout);
|
|
|
|
/* Restore the terminal settings for the disabled keys */
|
|
tcsetattr(0, TCSANOW, &oldterm);
|
|
|
|
/* We used to re-enable the default SIG_DFL and raise SIGTSTP, but
|
|
then we could be (and were) interrupted in the middle of the call.
|
|
So we do it the mutt way instead */
|
|
kill(0, SIGSTOP);
|
|
}
|
|
|
|
/* Restore the suspend handler when we come back into the prog */
|
|
RETSIGTYPE do_cont(int signal)
|
|
{
|
|
/* Now we just update the screen instead of having to reenable the
|
|
SIGTSTP handler. */
|
|
|
|
doupdate();
|
|
/* The Hurd seems to need this, otherwise a ^Y after a ^Z will
|
|
start suspending again. */
|
|
signal_init();
|
|
|
|
#ifndef NANO_SMALL
|
|
/* Perhaps the user resized the window while we slept. */
|
|
handle_sigwinch(0);
|
|
#endif
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
void handle_sigwinch(int s)
|
|
{
|
|
const char *tty = ttyname(0);
|
|
int fd;
|
|
int result = 0;
|
|
struct winsize win;
|
|
|
|
if (tty == NULL)
|
|
return;
|
|
fd = open(tty, O_RDWR);
|
|
if (fd == -1)
|
|
return;
|
|
result = ioctl(fd, TIOCGWINSZ, &win);
|
|
close(fd);
|
|
if (result == -1)
|
|
return;
|
|
|
|
/* Could check whether the COLS or LINES changed, and return
|
|
* otherwise. EXCEPT, that COLS and LINES are ncurses global
|
|
* variables, and in some cases ncurses has already updated them.
|
|
* But not in all cases, argh. */
|
|
COLS = win.ws_col;
|
|
LINES = win.ws_row;
|
|
editwinrows = LINES - 5 + no_help();
|
|
if (editwinrows < MIN_EDITOR_ROWS || COLS < MIN_EDITOR_COLS)
|
|
die_too_small();
|
|
|
|
#ifndef DISABLE_WRAPJUSTIFY
|
|
fill = wrap_at;
|
|
if (fill <= 0)
|
|
fill += COLS;
|
|
if (fill < 0)
|
|
fill = 0;
|
|
#endif
|
|
|
|
hblank = nrealloc(hblank, COLS + 1);
|
|
memset(hblank, ' ', COLS);
|
|
hblank[COLS] = '\0';
|
|
|
|
#ifdef HAVE_RESIZETERM
|
|
resizeterm(LINES, COLS);
|
|
#ifdef HAVE_WRESIZE
|
|
if (wresize(topwin, 2, COLS) == ERR)
|
|
die(_("Cannot resize top win"));
|
|
if (mvwin(topwin, 0, 0) == ERR)
|
|
die(_("Cannot move top win"));
|
|
if (wresize(edit, editwinrows, COLS) == ERR)
|
|
die(_("Cannot resize edit win"));
|
|
if (mvwin(edit, 2, 0) == ERR)
|
|
die(_("Cannot move edit win"));
|
|
if (wresize(bottomwin, 3 - no_help(), COLS) == ERR)
|
|
die(_("Cannot resize bottom win"));
|
|
if (mvwin(bottomwin, LINES - 3 + no_help(), 0) == ERR)
|
|
die(_("Cannot move bottom win"));
|
|
#endif /* HAVE_WRESIZE */
|
|
#endif /* HAVE_RESIZETERM */
|
|
|
|
fix_editbot();
|
|
|
|
if (current_y > editwinrows - 1)
|
|
edit_update(editbot, CENTER);
|
|
erase();
|
|
|
|
/* Do these b/c width may have changed... */
|
|
refresh();
|
|
titlebar(NULL);
|
|
edit_refresh();
|
|
display_main_list();
|
|
blank_statusbar();
|
|
total_refresh();
|
|
|
|
/* Turn cursor back on for sure */
|
|
curs_set(1);
|
|
|
|
/* Jump back to main loop */
|
|
siglongjmp(jmpbuf, 1);
|
|
}
|
|
#endif /* !NANO_SMALL */
|
|
|
|
/* If the NumLock key has made the keypad go awry, print an error
|
|
message; hopefully we can address it later. */
|
|
void print_numlock_warning(void)
|
|
{
|
|
static int didmsg = 0;
|
|
if (!didmsg) {
|
|
statusbar(_
|
|
("NumLock glitch detected. Keypad will malfunction with NumLock off"));
|
|
didmsg = 1;
|
|
}
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
void do_toggle(const toggle *which)
|
|
{
|
|
int enabled;
|
|
|
|
/* Even easier! */
|
|
TOGGLE(which->flag);
|
|
|
|
switch (which->val) {
|
|
case TOGGLE_SUSPEND_KEY:
|
|
signal_init();
|
|
break;
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
case TOGGLE_MOUSE_KEY:
|
|
mouse_init();
|
|
break;
|
|
#endif
|
|
case TOGGLE_NOHELP_KEY:
|
|
wclear(bottomwin);
|
|
wrefresh(bottomwin);
|
|
window_init();
|
|
fix_editbot();
|
|
edit_refresh();
|
|
display_main_list();
|
|
break;
|
|
case TOGGLE_DOS_KEY:
|
|
UNSET(MAC_FILE);
|
|
break;
|
|
case TOGGLE_MAC_KEY:
|
|
UNSET(DOS_FILE);
|
|
break;
|
|
#ifdef ENABLE_COLOR
|
|
case TOGGLE_SYNTAX_KEY:
|
|
edit_refresh();
|
|
break;
|
|
#endif
|
|
}
|
|
|
|
/* We are assuming here that shortcut_init() above didn't free and
|
|
* reallocate the toggles. */
|
|
enabled = ISSET(which->flag);
|
|
if (which->val == TOGGLE_NOHELP_KEY || which->val == TOGGLE_WRAP_KEY)
|
|
enabled = !enabled;
|
|
statusbar("%s %s", which->desc,
|
|
enabled ? _("enabled") : _("disabled"));
|
|
}
|
|
#endif /* !NANO_SMALL */
|
|
|
|
/* This function returns the correct keystroke, given the A,B,C or D
|
|
input key. This is a common sequence of many terms which send
|
|
Esc-O-[A-D] or Esc-[-[A-D]. */
|
|
int abcd(int input)
|
|
{
|
|
switch (input) {
|
|
case 'A':
|
|
case 'a':
|
|
return KEY_UP;
|
|
case 'B':
|
|
case 'b':
|
|
return KEY_DOWN;
|
|
case 'C':
|
|
case 'c':
|
|
return KEY_RIGHT;
|
|
case 'D':
|
|
case 'd':
|
|
return KEY_LEFT;
|
|
default:
|
|
return 0;
|
|
}
|
|
}
|
|
|
|
int main(int argc, char *argv[])
|
|
{
|
|
int optchr;
|
|
int startline = 0; /* Line to try and start at */
|
|
int modify_control_seq;
|
|
int fill_flag_used = 0; /* Was the fill option used? */
|
|
const shortcut *s;
|
|
#ifdef HAVE_GETOPT_LONG
|
|
int preserveopt = 0; /* Did the cmdline include --preserve? */
|
|
#endif
|
|
#ifndef NANO_SMALL
|
|
const toggle *t;
|
|
#endif
|
|
#ifdef _POSIX_VDISABLE
|
|
struct termios term;
|
|
#endif
|
|
#ifdef HAVE_GETOPT_LONG
|
|
int option_index = 0;
|
|
const struct option long_options[] = {
|
|
{"help", 0, 0, 'h'},
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
{"multibuffer", 0, 0, 'F'},
|
|
#endif
|
|
#ifdef ENABLE_NANORC
|
|
{"historylog", 0, 0, 'H'},
|
|
{"ignorercfiles", 0, 0, 'I'},
|
|
#endif
|
|
{"keypad", 0, 0, 'K'},
|
|
#ifndef DISABLE_JUSTIFY
|
|
{"quotestr", 1, 0, 'Q'},
|
|
#endif
|
|
#ifdef HAVE_REGEX_H
|
|
{"regexp", 0, 0, 'R'},
|
|
#endif
|
|
{"tabsize", 1, 0, 'T'},
|
|
{"version", 0, 0, 'V'},
|
|
#ifdef ENABLE_COLOR
|
|
{"syntax", 1, 0, 'Y'},
|
|
#endif
|
|
{"const", 0, 0, 'c'},
|
|
{"nofollow", 0, 0, 'l'},
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
{"mouse", 0, 0, 'm'},
|
|
#endif
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
{"operatingdir", 1, 0, 'o'},
|
|
#endif
|
|
{"preserve", 0, 0, 'p'},
|
|
#ifndef DISABLE_WRAPJUSTIFY
|
|
{"fill", 1, 0, 'r'},
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
{"speller", 1, 0, 's'},
|
|
#endif
|
|
{"tempfile", 0, 0, 't'},
|
|
{"view", 0, 0, 'v'},
|
|
#ifndef DISABLE_WRAPPING
|
|
{"nowrap", 0, 0, 'w'},
|
|
#endif
|
|
{"nohelp", 0, 0, 'x'},
|
|
{"suspend", 0, 0, 'z'},
|
|
#ifndef NANO_SMALL
|
|
{"backup", 0, 0, 'B'},
|
|
{"dos", 0, 0, 'D'},
|
|
{"mac", 0, 0, 'M'},
|
|
{"noconvert", 0, 0, 'N'},
|
|
{"smooth", 0, 0, 'S'},
|
|
{"autoindent", 0, 0, 'i'},
|
|
{"cut", 0, 0, 'k'},
|
|
#endif
|
|
{0, 0, 0, 0}
|
|
};
|
|
#endif
|
|
|
|
#ifdef ENABLE_NLS
|
|
setlocale(LC_ALL, "");
|
|
bindtextdomain(PACKAGE, LOCALEDIR);
|
|
textdomain(PACKAGE);
|
|
#endif
|
|
|
|
#ifdef HAVE_GETOPT_LONG
|
|
{
|
|
/* Check for the --preserve flag, and report error if people are
|
|
still using --pico. */
|
|
int i;
|
|
for (i = 1; i < argc; i++) {
|
|
if (!strcmp(argv[i], "--preserve"))
|
|
preserveopt = 1;
|
|
else if (!strcmp(argv[i], "--pico"))
|
|
do_preserve_msg();
|
|
}
|
|
}
|
|
#endif
|
|
|
|
#if !defined(ENABLE_NANORC) && defined(DISABLE_ROOTWRAP) && !defined(DISABLE_WRAPPING)
|
|
/* if we don't have rcfile support, we're root, and
|
|
--disable-wrapping-as-root is used, turn wrapping off */
|
|
if (geteuid() == 0)
|
|
SET(NO_WRAP);
|
|
#endif
|
|
|
|
#ifdef HAVE_GETOPT_LONG
|
|
while ((optchr = getopt_long(argc, argv, "h?BDFHIKMNQ:RST:VY:abcefgijklmo:pr:s:tvwxz",
|
|
long_options, &option_index)) != -1) {
|
|
#else
|
|
while ((optchr =
|
|
getopt(argc, argv, "h?BDFHIKMNQ:RST:VY:abcefgijklmo:pr:s:tvwxz")) != -1) {
|
|
#endif
|
|
|
|
switch (optchr) {
|
|
|
|
case 'a':
|
|
case 'b':
|
|
case 'e':
|
|
case 'f':
|
|
case 'g':
|
|
case 'j':
|
|
/* Pico compatibility flags */
|
|
break;
|
|
#ifndef NANO_SMALL
|
|
case 'B':
|
|
SET(BACKUP_FILE);
|
|
break;
|
|
case 'D':
|
|
SET(DOS_FILE);
|
|
break;
|
|
#endif
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
case 'F':
|
|
SET(MULTIBUFFER);
|
|
break;
|
|
#endif
|
|
#ifdef ENABLE_NANORC
|
|
case 'H':
|
|
SET(HISTORYLOG);
|
|
break;
|
|
case 'I':
|
|
SET(NO_RCFILE);
|
|
break;
|
|
#endif
|
|
case 'K':
|
|
SET(ALT_KEYPAD);
|
|
break;
|
|
#ifndef NANO_SMALL
|
|
case 'M':
|
|
SET(MAC_FILE);
|
|
break;
|
|
case 'N':
|
|
SET(NO_CONVERT);
|
|
break;
|
|
#endif
|
|
#ifndef DISABLE_JUSTIFY
|
|
case 'Q':
|
|
quotestr = mallocstrcpy(quotestr, optarg);
|
|
break;
|
|
#endif
|
|
#ifdef HAVE_REGEX_H
|
|
case 'R':
|
|
SET(USE_REGEXP);
|
|
break;
|
|
#endif
|
|
#ifndef NANO_SMALL
|
|
case 'S':
|
|
SET(SMOOTHSCROLL);
|
|
break;
|
|
#endif
|
|
case 'T':
|
|
{
|
|
int i;
|
|
char *first_error;
|
|
|
|
/* Using strtol() instead of atoi() lets us accept 0
|
|
* while checking other errors. */
|
|
i = (int)strtol(optarg, &first_error, 10);
|
|
if (errno == ERANGE || *optarg == '\0' || *first_error != '\0')
|
|
usage();
|
|
else
|
|
tabsize = i;
|
|
if (tabsize <= 0) {
|
|
fprintf(stderr, _("Tab size is too small for nano...\n"));
|
|
exit(1);
|
|
}
|
|
}
|
|
break;
|
|
case 'V':
|
|
version();
|
|
exit(0);
|
|
#ifdef ENABLE_COLOR
|
|
case 'Y':
|
|
syntaxstr = mallocstrcpy(syntaxstr, optarg);
|
|
break;
|
|
#endif
|
|
case 'c':
|
|
SET(CONSTUPDATE);
|
|
break;
|
|
#ifndef NANO_SMALL
|
|
case 'i':
|
|
SET(AUTOINDENT);
|
|
break;
|
|
case 'k':
|
|
SET(CUT_TO_END);
|
|
break;
|
|
#endif
|
|
case 'l':
|
|
SET(NOFOLLOW_SYMLINKS);
|
|
break;
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
case 'm':
|
|
SET(USE_MOUSE);
|
|
break;
|
|
#endif
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
case 'o':
|
|
operating_dir = mallocstrcpy(operating_dir, optarg);
|
|
break;
|
|
#endif
|
|
case 'p':
|
|
SET(PRESERVE);
|
|
#ifdef HAVE_GETOPT_LONG
|
|
if (!preserveopt)
|
|
do_preserve_msg();
|
|
#endif
|
|
break;
|
|
#ifndef DISABLE_WRAPJUSTIFY
|
|
case 'r':
|
|
{
|
|
int i;
|
|
char *first_error;
|
|
|
|
/* Using strtol() instead of atoi() lets us accept 0
|
|
* while checking other errors. */
|
|
i = (int)strtol(optarg, &first_error, 10);
|
|
if (errno == ERANGE || *optarg == '\0' || *first_error != '\0')
|
|
usage();
|
|
else
|
|
wrap_at = i;
|
|
}
|
|
fill_flag_used = 1;
|
|
break;
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
case 's':
|
|
alt_speller = mallocstrcpy(alt_speller, optarg);
|
|
break;
|
|
#endif
|
|
case 't':
|
|
SET(TEMP_OPT);
|
|
break;
|
|
case 'v':
|
|
SET(VIEW_MODE);
|
|
break;
|
|
#ifndef DISABLE_WRAPPING
|
|
case 'w':
|
|
SET(NO_WRAP);
|
|
break;
|
|
#endif
|
|
case 'x':
|
|
SET(NO_HELP);
|
|
break;
|
|
case 'z':
|
|
SET(SUSPEND);
|
|
break;
|
|
default:
|
|
usage();
|
|
}
|
|
}
|
|
|
|
/* We've read through the command line options. Now back up the flags
|
|
and values that are set, and read the rcfile(s). If the values
|
|
haven't changed afterward, restore the backed-up values. */
|
|
#ifdef ENABLE_NANORC
|
|
if (!ISSET(NO_RCFILE)) {
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
char *operating_dir_cpy = operating_dir;
|
|
#endif
|
|
#ifndef DISABLE_WRAPPING
|
|
int wrap_at_cpy = wrap_at;
|
|
#endif
|
|
#ifndef DISABLE_JUSTIFY
|
|
char *quotestr_cpy = quotestr;
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
char *alt_speller_cpy = alt_speller;
|
|
#endif
|
|
int tabsize_cpy = tabsize;
|
|
long flags_cpy = flags;
|
|
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
operating_dir = NULL;
|
|
#endif
|
|
#ifndef DISABLE_JUSTIFY
|
|
quotestr = NULL;
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
alt_speller = NULL;
|
|
#endif
|
|
|
|
do_rcfile();
|
|
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
if (operating_dir_cpy != NULL) {
|
|
free(operating_dir);
|
|
operating_dir = operating_dir_cpy;
|
|
}
|
|
#endif
|
|
#ifndef DISABLE_WRAPPING
|
|
if (fill_flag_used)
|
|
wrap_at = wrap_at_cpy;
|
|
#endif
|
|
#ifndef DISABLE_JUSTIFY
|
|
if (quotestr_cpy != NULL) {
|
|
free(quotestr);
|
|
quotestr = quotestr_cpy;
|
|
}
|
|
#endif
|
|
#ifndef DISABLE_SPELLER
|
|
if (alt_speller_cpy != NULL) {
|
|
free(alt_speller);
|
|
alt_speller = alt_speller_cpy;
|
|
}
|
|
#endif
|
|
if (tabsize_cpy > 0)
|
|
tabsize = tabsize_cpy;
|
|
flags |= flags_cpy;
|
|
}
|
|
#if defined(DISABLE_ROOTWRAP) && !defined(DISABLE_WRAPPING)
|
|
else if (geteuid() == 0)
|
|
SET(NO_WRAP);
|
|
#endif
|
|
#endif /* ENABLE_NANORC */
|
|
|
|
#ifndef DISABLE_OPERATINGDIR
|
|
/* Set up the operating directory. This entails chdir()ing there,
|
|
so that file reads and writes will be based there. */
|
|
init_operating_dir();
|
|
#endif
|
|
|
|
#ifndef DISABLE_JUSTIFY
|
|
if (quotestr == NULL)
|
|
#ifdef HAVE_REGEX_H
|
|
quotestr = mallocstrcpy(NULL, "^([ \t]*[|>:}#])+");
|
|
#else
|
|
quotestr = mallocstrcpy(NULL, "> ");
|
|
#endif
|
|
#endif /* !DISABLE_JUSTIFY */
|
|
if (tabsize == -1)
|
|
tabsize = 8;
|
|
|
|
/* Clear the filename we'll be using */
|
|
filename = charalloc(1);
|
|
filename[0] = '\0';
|
|
|
|
/* If there's a +LINE flag, it is the first non-option argument. */
|
|
if (0 < optind && optind < argc && argv[optind][0] == '+') {
|
|
startline = atoi(&argv[optind][1]);
|
|
optind++;
|
|
}
|
|
if (0 < optind && optind < argc)
|
|
filename = mallocstrcpy(filename, argv[optind]);
|
|
|
|
/* See if there's a non-option in argv (first non-option is the
|
|
filename, if +LINE is not given) */
|
|
if (argc > 1 && argc > optind) {
|
|
/* Look for the +line flag... */
|
|
if (argv[optind][0] == '+') {
|
|
startline = atoi(&argv[optind][1]);
|
|
optind++;
|
|
if (argc > optind)
|
|
filename = mallocstrcpy(filename, argv[optind]);
|
|
} else
|
|
filename = mallocstrcpy(filename, argv[optind]);
|
|
}
|
|
|
|
/* First back up the old settings so they can be restored, duh */
|
|
tcgetattr(0, &oldterm);
|
|
|
|
#ifdef _POSIX_VDISABLE
|
|
term = oldterm;
|
|
term.c_cc[VINTR] = _POSIX_VDISABLE;
|
|
term.c_cc[VQUIT] = _POSIX_VDISABLE;
|
|
term.c_lflag &= ~IEXTEN;
|
|
tcsetattr(0, TCSANOW, &term);
|
|
#endif
|
|
|
|
/* now ncurses init stuff... */
|
|
initscr();
|
|
savetty();
|
|
nonl();
|
|
cbreak();
|
|
noecho();
|
|
|
|
/* Set up some global variables */
|
|
global_init(0);
|
|
shortcut_init(0);
|
|
signal_init();
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("Main: set up windows\n"));
|
|
#endif
|
|
|
|
window_init();
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
mouse_init();
|
|
#endif
|
|
|
|
if (!ISSET(ALT_KEYPAD)) {
|
|
keypad(edit, TRUE);
|
|
keypad(bottomwin, TRUE);
|
|
}
|
|
|
|
#ifndef NANO_SMALL
|
|
history_init();
|
|
#ifdef ENABLE_NANORC
|
|
if (!ISSET(NO_RCFILE) && ISSET(HISTORYLOG))
|
|
load_history();
|
|
#endif
|
|
#endif
|
|
|
|
|
|
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("Main: bottom win\n"));
|
|
#endif
|
|
/* Set up bottom of window */
|
|
display_main_list();
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("Main: open file\n"));
|
|
#endif
|
|
|
|
open_file(filename, 0, 1);
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
/* If we're using multibuffers and more than one file is specified
|
|
on the command line, load them all and switch to the first one
|
|
afterward */
|
|
if (ISSET(MULTIBUFFER) && optind + 1 < argc) {
|
|
for (optind++; optind < argc; optind++) {
|
|
add_open_file(1);
|
|
new_file();
|
|
filename = mallocstrcpy(filename, argv[optind]);
|
|
open_file(filename, 0, 0);
|
|
load_file(0);
|
|
}
|
|
open_nextfile_void();
|
|
}
|
|
#endif
|
|
|
|
titlebar(NULL);
|
|
|
|
if (startline > 0)
|
|
do_gotoline(startline, 0);
|
|
|
|
/* Return here after a sigwinch */
|
|
sigsetjmp(jmpbuf, 1);
|
|
|
|
/* This variable should be initialized after the sigsetjmp(), so we
|
|
can't do Esc-Esc then quickly resize and muck things up. */
|
|
modify_control_seq = 0;
|
|
|
|
edit_refresh();
|
|
reset_cursor();
|
|
|
|
while (1) {
|
|
int keyhandled = 0; /* Have we handled the keystroke yet? */
|
|
int kbinput; /* Input from keyboard */
|
|
|
|
if (ISSET(CONSTUPDATE))
|
|
do_cursorpos(1);
|
|
|
|
#if !defined(DISABLE_BROWSER) || !defined(DISABLE_HELP) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION))
|
|
currshortcut = main_list;
|
|
#endif
|
|
|
|
#ifndef _POSIX_VDISABLE
|
|
/* We're going to have to do it the old way, i.e. on cygwin */
|
|
raw();
|
|
#endif
|
|
|
|
kbinput = wgetch(edit);
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("AHA! %c (%d)\n"), kbinput, kbinput);
|
|
#endif
|
|
if (kbinput == 27) { /* Grab Alt-key stuff first */
|
|
kbinput = wgetch(edit);
|
|
switch (kbinput) {
|
|
/* Alt-O, suddenly very important ;) */
|
|
case 'O':
|
|
kbinput = wgetch(edit);
|
|
/* Shift or Ctrl + Arrows are Alt-O-[2,5,6]-[A,B,C,D] on some terms */
|
|
if (kbinput == '2' || kbinput == '5' || kbinput == '6')
|
|
kbinput = wgetch(edit);
|
|
if ((kbinput <= 'D' && kbinput >= 'A') ||
|
|
(kbinput <= 'd' && kbinput >= 'a'))
|
|
kbinput = abcd(kbinput);
|
|
else if (kbinput <= 'z' && kbinput >= 'j')
|
|
print_numlock_warning();
|
|
else if (kbinput <= 'S' && kbinput >= 'P')
|
|
kbinput = KEY_F(kbinput - 79);
|
|
#ifdef DEBUG
|
|
else {
|
|
fprintf(stderr, _("I got Alt-O-%c! (%d)\n"),
|
|
kbinput, kbinput);
|
|
break;
|
|
}
|
|
#endif
|
|
break;
|
|
case 27:
|
|
/* If we get Alt-Alt, the next keystroke should be the same as a
|
|
control sequence */
|
|
modify_control_seq = 1;
|
|
keyhandled = 1;
|
|
break;
|
|
case '[':
|
|
kbinput = wgetch(edit);
|
|
switch (kbinput) {
|
|
case '1': /* Alt-[-1-[0-5,7-9] = F1-F8 in X at least */
|
|
kbinput = wgetch(edit);
|
|
if (kbinput >= '1' && kbinput <= '5') {
|
|
kbinput = KEY_F(kbinput - 48);
|
|
wgetch(edit);
|
|
} else if (kbinput >= '7' && kbinput <= '9') {
|
|
kbinput = KEY_F(kbinput - 49);
|
|
wgetch(edit);
|
|
} else if (kbinput == '~')
|
|
kbinput = KEY_HOME;
|
|
#ifdef DEBUG
|
|
else {
|
|
fprintf(stderr, _("I got Alt-[-1-%c! (%d)\n"),
|
|
kbinput, kbinput);
|
|
break;
|
|
}
|
|
#endif
|
|
break;
|
|
case '2': /* Alt-[-2-[0,1,3,4] = F9-F12 in many terms */
|
|
kbinput = wgetch(edit);
|
|
switch (kbinput) {
|
|
case '0':
|
|
kbinput = KEY_F(9);
|
|
wgetch(edit);
|
|
break;
|
|
case '1':
|
|
kbinput = KEY_F(10);
|
|
wgetch(edit);
|
|
break;
|
|
case '3':
|
|
kbinput = KEY_F(11);
|
|
wgetch(edit);
|
|
break;
|
|
case '4':
|
|
kbinput = KEY_F(12);
|
|
wgetch(edit);
|
|
break;
|
|
case '~':
|
|
kbinput = NANO_INSERTFILE_KEY;
|
|
break;
|
|
#ifdef DEBUG
|
|
default:
|
|
fprintf(stderr, _("I got Alt-[-2-%c! (%d)\n"),
|
|
kbinput, kbinput);
|
|
break;
|
|
#endif
|
|
}
|
|
break;
|
|
case '3': /* Alt-[-3 = Delete? */
|
|
kbinput = NANO_DELETE_KEY;
|
|
wgetch(edit);
|
|
break;
|
|
case '4': /* Alt-[-4 = End? */
|
|
kbinput = NANO_END_KEY;
|
|
wgetch(edit);
|
|
break;
|
|
case '5': /* Alt-[-5 = Page Up */
|
|
kbinput = KEY_PPAGE;
|
|
wgetch(edit);
|
|
break;
|
|
case 'V': /* Alt-[-V = Page Up in Hurd Console */
|
|
case 'I': /* Alt-[-I = Page Up - FreeBSD Console */
|
|
kbinput = KEY_PPAGE;
|
|
break;
|
|
case '6': /* Alt-[-6 = Page Down */
|
|
kbinput = KEY_NPAGE;
|
|
wgetch(edit);
|
|
break;
|
|
case 'U': /* Alt-[-U = Page Down in Hurd Console */
|
|
case 'G': /* Alt-[-G = Page Down - FreeBSD Console */
|
|
kbinput = KEY_NPAGE;
|
|
break;
|
|
case '7':
|
|
kbinput = KEY_HOME;
|
|
wgetch(edit);
|
|
break;
|
|
case '8':
|
|
kbinput = KEY_END;
|
|
wgetch(edit);
|
|
break;
|
|
case '9': /* Alt-[-9 = Delete in Hurd Console */
|
|
kbinput = KEY_DC;
|
|
break;
|
|
case '@': /* Alt-[-@ = Insert in Hurd Console */
|
|
case 'L': /* Alt-[-L = Insert - FreeBSD Console */
|
|
kbinput = NANO_INSERTFILE_KEY;
|
|
break;
|
|
case '[': /* Alt-[-[-[A-E], F1-F5 in Linux console */
|
|
kbinput = wgetch(edit);
|
|
if (kbinput >= 'A' && kbinput <= 'E')
|
|
kbinput = KEY_F(kbinput - 64);
|
|
break;
|
|
case 'A':
|
|
case 'B':
|
|
case 'C':
|
|
case 'D':
|
|
case 'a':
|
|
case 'b':
|
|
case 'c':
|
|
case 'd':
|
|
kbinput = abcd(kbinput);
|
|
break;
|
|
case 'H':
|
|
kbinput = KEY_HOME;
|
|
break;
|
|
case 'F':
|
|
case 'Y': /* End Key in Hurd Console */
|
|
kbinput = KEY_END;
|
|
break;
|
|
default:
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("I got Alt-[-%c! (%d)\n"),
|
|
kbinput, kbinput);
|
|
#endif
|
|
break;
|
|
}
|
|
break;
|
|
#ifdef ENABLE_MULTIBUFFER
|
|
case NANO_OPENPREV_KEY:
|
|
case NANO_OPENPREV_ALTKEY:
|
|
open_prevfile_void();
|
|
keyhandled = 1;
|
|
break;
|
|
case NANO_OPENNEXT_KEY:
|
|
case NANO_OPENNEXT_ALTKEY:
|
|
open_nextfile_void();
|
|
keyhandled = 1;
|
|
break;
|
|
#endif
|
|
default:
|
|
/* Check for the altkey defs.... */
|
|
for (s = main_list; s != NULL; s = s->next)
|
|
if (kbinput == s->altval || (kbinput >= 'A' &&
|
|
kbinput <= 'Z' && kbinput == s->altval - 32)) {
|
|
if (ISSET(VIEW_MODE) && !s->viewok)
|
|
print_view_warning();
|
|
else
|
|
s->func();
|
|
keyhandled = 1;
|
|
break;
|
|
}
|
|
#ifndef NANO_SMALL
|
|
/* And for toggle switches */
|
|
for (t = toggles; t != NULL && !keyhandled; t = t->next)
|
|
if (kbinput == t->val || (t->val >= 'a' &&
|
|
t->val <= 'z' && kbinput == t->val - 32)) {
|
|
do_toggle(t);
|
|
keyhandled = 1;
|
|
break;
|
|
}
|
|
#endif
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("I got Alt-%c! (%d)\n"), kbinput,
|
|
kbinput);
|
|
#endif
|
|
break;
|
|
}
|
|
}
|
|
/* Hack, make insert key do something useful, like insert file */
|
|
else if (kbinput == KEY_IC)
|
|
kbinput = NANO_INSERTFILE_KEY;
|
|
|
|
/* If modify_control_seq is set, we received an Alt-Alt
|
|
sequence before this, so we make this key a control sequence
|
|
by subtracting 32, 64, or 96, depending on its value. */
|
|
if (!keyhandled && modify_control_seq) {
|
|
if (kbinput == ' ')
|
|
kbinput -= 32;
|
|
else if (kbinput >= 'A' && kbinput < 'a')
|
|
kbinput -= 64;
|
|
else if (kbinput >= 'a' && kbinput <= 'z')
|
|
kbinput -= 96;
|
|
|
|
modify_control_seq = 0;
|
|
}
|
|
|
|
/* Look through the main shortcut list to see if we've hit a
|
|
shortcut key */
|
|
|
|
#if !defined(DISABLE_BROWSER) || !defined (DISABLE_HELP) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION))
|
|
for (s = currshortcut; s != NULL && !keyhandled; s = s->next) {
|
|
#else
|
|
for (s = main_list; s != NULL && !keyhandled; s = s->next) {
|
|
#endif
|
|
if (kbinput == s->val ||
|
|
(s->misc1 && kbinput == s->misc1) ||
|
|
(s->misc2 && kbinput == s->misc2)) {
|
|
if (ISSET(VIEW_MODE) && !s->viewok)
|
|
print_view_warning();
|
|
else
|
|
s->func();
|
|
keyhandled = 1;
|
|
/* Rarely, the value of s can change after s->func(),
|
|
leading to problems; get around this by breaking out
|
|
explicitly once we successfully handle a shortcut */
|
|
break;
|
|
}
|
|
}
|
|
|
|
#ifdef _POSIX_VDISABLE
|
|
/* Don't even think about changing this string */
|
|
if (kbinput == 19)
|
|
statusbar(_("XOFF ignored, mumble mumble."));
|
|
if (kbinput == 17)
|
|
statusbar(_("XON ignored, mumble mumble."));
|
|
#endif
|
|
/* If we're in raw mode or using Alt-Alt-x, we have to catch
|
|
Control-S and Control-Q */
|
|
if (kbinput == 17 || kbinput == 19)
|
|
keyhandled = 1;
|
|
|
|
/* Catch ^Z by hand when triggered also
|
|
407 == ^Z in Linux console when keypad() is used? */
|
|
if (kbinput == 26 || kbinput == 407) {
|
|
if (ISSET(SUSPEND))
|
|
do_suspend(0);
|
|
keyhandled = 1;
|
|
}
|
|
|
|
/* Last gasp, stuff that's not in the main lists */
|
|
if (!keyhandled)
|
|
switch (kbinput) {
|
|
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
|
|
case KEY_MOUSE:
|
|
do_mouse();
|
|
break;
|
|
#endif
|
|
|
|
case -1: /* Stuff that we don't want to do squat */
|
|
case 0: /* Erg */
|
|
case 29: /* Ctrl-] */
|
|
case 410: /* Must ignore this, it's sent when we resize */
|
|
#ifdef PDCURSES
|
|
case 541: /* ???? */
|
|
case 542: /* Control and alt in Windows *shrug* */
|
|
case 543: /* Right ctrl key */
|
|
case 544:
|
|
case 545: /* Right alt key */
|
|
#endif
|
|
|
|
break;
|
|
default:
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("I got %c (%d)!\n"), kbinput, kbinput);
|
|
#endif
|
|
/* We no longer stop unhandled sequences so that people with
|
|
odd character sets can type... */
|
|
|
|
if (ISSET(VIEW_MODE))
|
|
print_view_warning();
|
|
else
|
|
do_char(kbinput);
|
|
}
|
|
|
|
reset_cursor();
|
|
wrefresh(edit);
|
|
}
|
|
assert(0);
|
|
}
|