files.c

/* $Id$ */
/**************************************************************************
 *   files.c                                                              *
 *                                                                        *
 *   Copyright (C) 1999 Chris Allegretta                                  *
 *   This program is free software; you can redistribute it and/or modify *
 *   it under the terms of the GNU General Public License as published by *
 *   the Free Software Foundation; either version 1, or (at your option)  *
 *   any later version.                                                   *
 *                                                                        *
 *   This program is distributed in the hope that it will be useful,      *
 *   but WITHOUT ANY WARRANTY; without even the implied warranty of       *
 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
 *   GNU General Public License for more details.                         *
 *                                                                        *
 *   You should have received a copy of the GNU General Public License    *
 *   along with this program; if not, write to the Free Software          *
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.            *
 *                                                                        *
 **************************************************************************/

#include "config.h"

#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <pwd.h>

#include "proto.h"
#include "nano.h"

#ifndef NANO_SMALL
#include <libintl.h>
#define _(string) gettext(string)
#else
#define _(string) (string)
#endif

/* Load file into edit buffer - takes data from file struct */
void load_file(void)
{
    current = fileage;

#ifdef ENABLE_MULTIBUFFER
    /* add a new entry to the open_files structure, and check for
       duplicate entries; if a duplicate entry was found, reload the
       currently open file (it may have been changed during duplicate
       handling) */
    if (add_open_file(0, 1) == 2)
	load_open_file();
#endif

    wmove(edit, current_y, current_x);
}

/* What happens when there is no file to open? aiee! */
void new_file(void)
{
    fileage = nmalloc(sizeof(filestruct));
    fileage->data = charalloc(1);
    strcpy(fileage->data, "");
    fileage->prev = NULL;
    fileage->next = NULL;
    fileage->lineno = 1;
    filebot = fileage;
    edittop = fileage;
    editbot = fileage;
    current = fileage;
    totlines = 1;

#ifdef ENABLE_MULTIBUFFER
    /* if there aren't any entries in open_files, create the entry for
       this new file, and, of course, don't bother checking for
       duplicates; without this, if nano is started without a filename on
       the command line, a new file with no name will be created, but it
       will be given no open_files entry, leading to problems later on */
    if (!open_files)
	add_open_file(0, 0);
#endif

    UNSET(VIEW_MODE);
}


int read_byte(int fd, char *filename, char *input)
{
    static char buf[BUFSIZ];
    static int index = 0;
    static int size = 0;

    if (index == size) {
	index = 0;
	size = read(fd, buf, BUFSIZ);
	if (size == -1) {
	    clear();
	    refresh();
	    resetty();
	    endwin();
	    perror(filename);
	}
	if (!size)
	    return 0;
    }
    *input = buf[index++];
    return 1;
}

filestruct *read_line(char *buf, filestruct * prev, int *line1ins)
{
    filestruct *fileptr;

    fileptr = nmalloc(sizeof(filestruct));
    fileptr->data = charalloc(strlen(buf) + 2);
    strcpy(fileptr->data, buf);

    if (*line1ins) {
	/* Special case, insert with cursor on 1st line. */
	fileptr->prev = NULL;
	fileptr->next = fileage;
	fileptr->lineno = 1;
	*line1ins = 0;
	/* If we're inserting into the first line of the file, then
	   we want to make sure that our edit buffer stays on the
	   first line (and that fileage stays up to date!) */
	fileage = fileptr;
	edittop = fileptr;
    } else if (fileage == NULL) {
	fileage = fileptr;
	fileage->lineno = 1;
	fileage->next = fileage->prev = NULL;
	fileptr = filebot = fileage;
    } else if (prev) {
	fileptr->prev = prev;
	fileptr->next = NULL;
	fileptr->lineno = prev->lineno + 1;
	prev->next = fileptr;
    } else {
	die(_("read_line: not on first line and prev is NULL"));
    }

    return fileptr;
}


int read_file(int fd, char *filename)
{
    long size, num_lines = 0, linetemp = 0;
    char input[2];		/* buffer */
    char *buf;
    long i = 0, bufx = 128;
    filestruct *fileptr = current, *tmp = NULL;
    int line1ins = 0;

    buf = charalloc(bufx);
    buf[0] = '\0';

    if (fileptr != NULL && fileptr->prev != NULL) {
	fileptr = fileptr->prev;
	tmp = fileptr;
    } else if (fileptr != NULL && fileptr->prev == NULL) {
	tmp = fileage;
	current = fileage;
	line1ins = 1;
    }
    input[1] = 0;
    /* Read the entire file into file struct */
    while ((size = read_byte(fd, filename, input)) > 0) {
	linetemp = 0;
	if (input[0] == '\n') {
	    fileptr = read_line(buf, fileptr, &line1ins);
	    num_lines++;
	    buf[0] = 0;
	    i = 0;
	} else {
	    /* Now we allocate a bigger buffer 128 characters at a time.
	       If we allocate a lot of space for one line, we may indeed 
	       have to use a buffer this big later on, so we don't
	       decrease it at all.  We do free it at the end, though. */

	    if (i >= bufx - 1) {
		buf = nrealloc(buf, bufx + 128);
		bufx += 128;
	    }
	    buf[i] = input[0];
	    buf[i + 1] = 0;
	    i++;
	}
	totsize += size;
    }

    /* Did we not get a newline but still have stuff to do? */
    if (buf[0]) {
	fileptr = read_line(buf, fileptr, &line1ins);
	num_lines++;
	buf[0] = 0;
    }
    /* Did we even GET a file? */
    if (totsize == 0 || fileptr == NULL) {
	new_file();
	statusbar(_("Read %d lines"), num_lines);
	return 1;
    }

    if (current != NULL) {
	fileptr->next = current;
	current->prev = fileptr;
	renumber(current);
	current_x = 0;
	placewewant = 0;
    } else if (fileptr->next == NULL) {
	filebot = fileptr;
	new_magicline();
	totsize--;

	/* Update the edit buffer */
	load_file();
    }
    statusbar(_("Read %d lines"), num_lines);
    totlines += num_lines;

    free(buf);
    close(fd);

    return 1;
}

/* Open the file (and decide if it exists) */
int open_file(char *filename, int insert, int quiet)
{
    int fd;
    struct stat fileinfo;

    if (!strcmp(filename, "") || stat(filename, &fileinfo) == -1) {
	if (insert) {
	    if (!quiet)
		statusbar(_("\"%s\" not found"), filename);
	    return -1;
	} else {
	    /* We have a new file */
	    statusbar(_("New File"));
	    new_file();
	}
    } else if ((fd = open(filename, O_RDONLY)) == -1) {
	if (!quiet)
	    statusbar("%s: %s", strerror(errno), filename);
	if (!insert)
	    new_file();
	return -1;
    } else {			/* File is A-OK */
	if (S_ISDIR(fileinfo.st_mode) || S_ISCHR(fileinfo.st_mode) || 
		S_ISBLK(fileinfo.st_mode)) {
	    if (S_ISDIR(fileinfo.st_mode))
		statusbar(_("File \"%s\" is a directory"), filename);
	    else
		/* Don't open character or block files.  Sorry, /dev/sndstat! */
		statusbar(_("File \"%s\" is a device file"), filename);

	    if (!insert)
		new_file();
	    return -1;
	}
	if (!quiet)
	    statusbar(_("Reading File"));
	read_file(fd, filename);
    }

    return 1;
}

int do_insertfile(int loading_file)
{
    int i;
    char *realname = NULL;

    wrap_reset();

#ifndef DISABLE_MOUSE
    currshortcut = insertfile_list;
    currslen = INSERTFILE_LIST_LEN;
#endif

    i = statusq(1, insertfile_list, INSERTFILE_LIST_LEN, "",
		_("File to insert [from ./] "));
    if (i != -1) {

#ifdef DEBUG
	fprintf(stderr, _("filename is %s"), answer);
#endif

#ifndef DISABLE_TABCOMP
	realname = real_dir_from_tilde(answer);
#else
	realname = mallocstrcpy(realname, answer);
#endif

#ifndef DISABLE_BROWSER
	if (i == NANO_TOFILES_KEY) {
	    
	    char *tmp = do_browse_from(realname);
#ifndef DISABLE_MOUSE
	    currshortcut = insertfile_list;
	    currslen = INSERTFILE_LIST_LEN;
#endif

#ifdef DISABLE_TABCOMP
	    realname = NULL;
#endif
	    if 	(tmp != NULL)
		realname = mallocstrcpy(realname, tmp);
	    else
		return do_insertfile(loading_file);
	}
#endif

#ifdef ENABLE_MULTIBUFFER
	if (loading_file) {

	    /* update the current entry in the open_files structure; we
	       don't need to check for duplicate entries (the conditions
	       that could create them are taken care of elsewhere) */
	    add_open_file(1, 0);

	    free_filestruct(current);
	    new_file();
	    UNSET(MODIFIED);
	}
#endif

	i = open_file(realname, 1, 0);

#ifdef ENABLE_MULTIBUFFER
	if (loading_file)
	    filename = mallocstrcpy(filename, realname);
#endif

	free(realname);

	dump_buffer(fileage);

#ifdef ENABLE_MULTIBUFFER
	if (loading_file)
	    load_file();
	else
#endif

	    set_modified();

	/* Here we want to rebuild the edit window */
	fix_editbot();

#ifdef ENABLE_MULTIBUFFER
	/* If we've loaded another file, update the titlebar's contents */
	if (loading_file) {
	    clearok(topwin, FALSE);
	    titlebar(NULL);

	    /* And re-init the shortcut list */
	    shortcut_init(0);
	}
#endif

	/* If we've gone off the bottom, recenter; otherwise, just redraw */
	if (current->lineno > editbot->lineno)
	    edit_update(current, CENTER);
	else
	    edit_refresh();

	UNSET(KEEP_CUTBUFFER);
	display_main_list();
	return i;
    } else {
	statusbar(_("Cancelled"));
	UNSET(KEEP_CUTBUFFER);
	display_main_list();
	return 0;
    }
}

int do_insertfile_void(void)
{
    int result = 0;
#ifdef ENABLE_MULTIBUFFER
    result = do_insertfile(ISSET(MULTIBUFFER));
#else
    result = do_insertfile(0);
#endif

    display_main_list();
    return result;
}

#ifdef ENABLE_MULTIBUFFER
/*
 * Add/update an entry to the open_files filestruct.  If update is
 * zero, a new entry is created; otherwise, the current entry is updated.
 * If dup_fix is zero, checking for and handling duplicate entries is not
 * done; otherwise, it is.  Return 0 on success, 1 on error, or 2 on
 * finding a duplicate entry.
 */
int add_open_file(int update, int dup_fix)
{
    filestruct *tmp;

    if (!current || !filename)
	return 1;

    /* first, if duplicate checking is allowed, do it */
    if (dup_fix) {

	/* if duplicates were found and handled, we're done */
	if (open_file_dup_fix(update))
	    return 2;
    }

    /* if no entries, make the first one */
    if (!open_files) {
	open_files = make_new_node(NULL);

	/* if open_files->file is NULL at the nrealloc() below, we get a
	   segfault */
	open_files->file = open_files;
    }

    else if (!update) {

	/* otherwise, if we're not updating, make a new entry for
	   open_files and splice it in after the current one */

#ifdef DEBUG
	    fprintf(stderr, _("filename is %s"), open_files->data);
#endif

	tmp = make_new_node(NULL);
	splice_node(open_files, tmp, open_files->next);
	open_files = open_files->next;

	/* if open_files->file is NULL at the nrealloc() below, we get a
	   segfault */
	open_files->file = open_files;
    }

    /* save current filename */
    open_files->data = mallocstrcpy(open_files->data, filename);

    /* save the full path location */
    open_files->file_path = get_full_path(open_files->data);

    /* save current total number of lines */
    open_files->file_totlines = totlines;

    /* save current total size */
    open_files->file_totsize = totsize;

    /* save current x-coordinate position */
    open_files->file_current_x = current_x;

    /* save current y-coordinate position */
    open_files->file_current_y = current_y;

    /* save current place we want */
    open_files->file_placewewant = placewewant;

    /* save current line number */
    open_files->lineno = current->lineno;

    /* save current filestruct */
    open_files->file = nrealloc(open_files->file, sizeof(filestruct));
    while (current->prev)
	current = current->prev;
    open_files->file = copy_filestruct(current);
    do_gotoline(open_files->lineno, 1);
    placewewant = open_files->file_placewewant;
    update_line(current, current_x);

    /* save current modification status */
    open_files->file_modified = ISSET(MODIFIED);

#ifdef DEBUG
    fprintf(stderr, _("filename is %s"), open_files->data);
#endif

    return 0;
}

/*
 * Update only the filename and full path stored in the current entry.
 * Return 0 on success or 1 on error.
 */ 
int open_file_change_name(void)
{
    if (!open_files || !filename)
	return 1;

    /* save current filename */
    open_files->data = mallocstrcpy(open_files->data, filename);

    /* save the full path location */
    open_files->file_path = get_full_path(open_files->data);

    return 0;
}

/*
 * Read the current entry in the open_files structure and set up the
 * currently open file using that entry's information.  Return 0 on
 * success or 1 on error.
 */
int load_open_file(void)
{
    if (!open_files)
	return 1;

    /* set up the filename, the file buffer, the total number of lines in
       the file, and the total file size */
    filename = mallocstrcpy(filename, open_files->data);
    fileage = copy_filestruct(open_files->file);
    current = fileage;
    totlines = open_files->file_totlines;
    totsize = open_files->file_totsize;

    /* since do_gotoline() resets the x-coordinate but not the
       y-coordinate, set all coordinates up this way */
    current_y = open_files->file_current_y;
    do_gotoline(open_files->lineno, 1);
    current_x = open_files->file_current_x;
    placewewant = open_files->file_placewewant;
    update_line(current, current_x);

    /* set up modification status and update the titlebar */
    if (open_files->file_modified)
	SET(MODIFIED);
    else
	UNSET(MODIFIED);
    clearok(topwin, FALSE);
    titlebar(NULL);

    /* if we're constantly displaying the cursor position, update it */
    if (ISSET(CONSTUPDATE))
	do_cursorpos();

    /* now we're done */
    return 0;
}

/*
 * Search the open_files structure for an entry with the same value for
 * the file_path member as the current entry (i. e. a duplicate entry).
 * If one is found, return a pointer to it; otherwise, return NULL.
 *
 * Note: This should only be called inside open_file_dup_fix().
 */
filestruct *open_file_dup_search(void)
{
    filestruct *tmp;
    char *path;

    if (!open_files || !filename)
	return NULL;

    tmp = open_files;
    path = get_full_path(filename);

    /* if there's only one entry, handle it */
    if (!tmp->prev && !tmp->next) {
	if (!strcmp(tmp->file_path, path))
	    return tmp;
    }

    /* otherwise, go to the beginning */
    while (tmp->prev)
	tmp = tmp->prev;

    /* and search the entries one by one */
    while (tmp) {

	if (!strcmp(tmp->file_path, path)) {

	    /* if it's not the current entry, we've found a duplicate */
	    if (tmp != open_files) 
		return tmp;
	}

	/* go to the next entry */
	tmp = tmp->next;

    }

    return NULL;
}

/*
 * Search for duplicate entries in the open_files structure using
 * open_file_dup_search(), and, if one is found, handle it properly.
 * Return 0 if no duplicates were found, and 1 otherwise.
 */
int open_file_dup_fix(int update)
{
    filestruct *tmp = open_file_dup_search();

    if (!tmp)
	return 0;

    /* if there's only one entry, handle it */
    if (!tmp->prev && !tmp->next)
	return 1;

    /* otherwise, if we're not updating, the user's trying to load a
       duplicate; switch to the original instead */
    if (!update) {
	open_files = tmp;
	return 1;
    }

    /* if we are updating, the filename's been changed via a save; it's
       thus more recent than the original, so remove the original */
    else {
	unlink_node(tmp);
	free_filestruct(tmp->file);
	free(tmp->file_path);
	delete_node(tmp);
    }
    return 0;
}

/*
 * Open the previous entry in the open_files structure.  If closing_file
 * is zero, update the current entry before switching from it.
 * Otherwise, we are about to close that entry, so don't bother doing so.
 * Return 0 on success and 1 on error.
 */
int open_prevfile(int closing_file)
{
    if (!open_files)
	return 1;

    /* if we're not about to close the current entry, update it before
       doing anything; since we're only switching, we don't need to check
       for duplicate entries */
    if (!closing_file)
	add_open_file(1, 0);

    if (!open_files->prev && !open_files->next) {

	/* only one file open */
	if (!closing_file)
	    statusbar(_("No more open files"));
	return 1;
    }

    if (open_files->prev) {
	open_files = open_files->prev;

#ifdef DEBUG
	fprintf(stderr, _("filename is %s"), open_files->data);
#endif

    }

    else if (open_files->next) {

	/* if we're at the beginning, wrap around to the end */
	while (open_files->next)
	    open_files = open_files->next;

#ifdef DEBUG
	    fprintf(stderr, _("filename is %s"), open_files->data);
#endif

    }

    load_open_file();

#ifdef DEBUG
    dump_buffer(current);
#endif

    return 0;
}

/*
 * Open the next entry in the open_files structure.  If closing_file is
 * zero, update the current entry before switching from it.  Otherwise, we
 * are about to close that entry, so don't bother doing so.  Return 0 on
 * success and 1 on error.
 */
int open_nextfile(int closing_file)
{
    if (!open_files)
	return 1;

    /* if we're not about to close the current entry, update it before
       doing anything; since we're only switching, we don't need to check
       for duplicate entries */
    if (!closing_file)
	add_open_file(1, 0);

    if (!open_files->prev && !open_files->next) {

	/* only one file open */
	if (!closing_file)
	    statusbar(_("No more open files"));
	return 1;
    }

    if (open_files->next) {
	open_files = open_files->next;

#ifdef DEBUG
	fprintf(stderr, _("filename is %s"), open_files->data);
#endif

    }
    else if (open_files->prev) {

	/* if we're at the end, wrap around to the beginning */
	while (open_files->prev) {
	    open_files = open_files->prev;

#ifdef DEBUG
	    fprintf(stderr, _("filename is %s"), open_files->data);
#endif

	}
    }

    load_open_file();

#ifdef DEBUG
    dump_buffer(current);
#endif

    return 0;
}

/*
 * Delete an entry from the open_files filestruct.  After deletion of an
 * entry, the next or previous entry is opened, whichever is found first.
 * Return 0 on success or 1 on error.
 */
int close_open_file(void)
{
    filestruct *tmp;

    if (!open_files)
	return 1;

    tmp = open_files;
    if (open_nextfile(1)) {
	if (open_prevfile(1))
	    return 1;
    }

    unlink_node(tmp);
    free_filestruct(tmp->file);
    free(tmp->file_path);
    delete_node(tmp);

    shortcut_init(0);
    display_main_list();
    return 0;
}

/*
 * When passed "[relative path][filename]" in origpath, return "[full
 * path][filename]" on success, or NULL on error.
 */
char *get_full_path(const char *origpath)
{
    char *newpath = NULL, *last_slash, *d_here, *d_there, *d_there_file;
    int last_slash_index;

    /* first, get the current directory */

#ifdef PATH_MAX
    d_here = getcwd(NULL, PATH_MAX + 1);
#else
    d_here = getcwd(NULL, 0);
#endif

    if (d_here) {

	align(&d_here);

	/* get the filename (with path included) and save it in both
	   d_there and d_there_file */
	d_there = charalloc(strlen(origpath) + 1);
	d_there_file = charalloc(strlen(origpath) + 1);
	strcpy(d_there, origpath);
	strcpy(d_there_file, origpath);

	/* search for the last slash in d_there */
	last_slash = strrchr(d_there, '/');

	/* if we didn't find one, copy d_here into d_there; all data is
	   then set up */
	if (!last_slash) {
	    d_there = nrealloc(d_there, strlen(d_here) + 1);
	    strcpy(d_there, d_here);
	}

	else {

	    /* otherwise, remove all non-path elements from d_there */
	    last_slash_index = strlen(d_there) - strlen(last_slash);
	    null_at(d_there, last_slash_index);

	    /* and remove all non-file elements from d_there_file */
	    last_slash++;
	    d_there_file = nrealloc(d_there_file, strlen(last_slash) + 1);
	    strcpy(d_there_file, last_slash);

	    /* now go to the path specified in d_there */
	    if (chdir(d_there) != -1) {

		/* get the full pathname, and save it back in d_there */

		free(d_there);

#ifdef PATH_MAX
		d_there = getcwd(NULL, PATH_MAX + 1);
#else
		d_there = getcwd(NULL, 0);
#endif

		align(&d_there);
	    }

	    /* finally, go back to where we were before, d_here (no error
	       checking is done on this chdir(), because we can do
	       nothing if it fails) */
	    chdir(d_here);
	}
	
	/* all data is set up; fill in newpath */

	/* newpath = d_there + "/" + d_there_file */
	newpath = charalloc(strlen(d_there) + strlen(d_there_file) + 2);
	strcpy(newpath, d_there);
	strcat(newpath, "/");
	strcat(newpath, d_there_file);

	/* finally, clean up */
	free(d_there_file);
	free(d_there);
	free(d_here);
    }

    return newpath;
}
#endif

/*
 * Write a file out.  If tmp is nonzero, we set the umask to 0600,
 * we don't set the global variable filename to its name, and don't
 * print out how many lines we wrote on the statusbar.
 * 
 * tmp means we are writing a tmp file in a secure fashion.  We use
 * it when spell checking or dumping the file on an error.
 *
 * append means, not surprisingly, whether we are appending instead
 * of overwriting.
 *
 * nonamechange means don't change the current filename, it is ignored
 * if tmp == 1.
 */
int write_file(char *name, int tmp, int append, int nonamechange)
{
    long size, lineswritten = 0;
    static char *buf = NULL;
    filestruct *fileptr;
    int fd, mask = 0, realexists, anyexists;
    struct stat st, lst;
    static char *realname = NULL;

    if (!strcmp(name, "")) {
	statusbar(_("Cancelled"));
	return -1;
    }
    titlebar(NULL);
    fileptr = fileage;

    if (realname != NULL)
	free(realname);

    if (buf != NULL)
	free(buf);

#ifndef DISABLE_TABCOMP
    realname = real_dir_from_tilde(name);
#else
    realname = mallocstrcpy(realname, name);
#endif

    /* Save the state of file at the end of the symlink (if there is one) */
    realexists = stat(realname, &st);

    /* Stat the link itself for the check... */
    anyexists = lstat(realname, &lst);

    /* New case: if the file exists, just give up */
    if (tmp && anyexists != -1)
	return -1;
    /* NOTE: If you change this statement, you MUST CHANGE the if 
       statement below (that says:
		if (realexists == -1 || tmp || (!ISSET(FOLLOW_SYMLINKS) &&
		S_ISLNK(lst.st_mode))) {
       to reflect whether or not to link/unlink/rename the file */
    else if (ISSET(FOLLOW_SYMLINKS) || !S_ISLNK(lst.st_mode) || tmp) {
	/* Use O_EXCL if tmp == 1.  This is now copied from joe, because
	   wiggy says so *shrug*. */
	if (append)
	    fd = open(realname, O_WRONLY | O_APPEND, (S_IRUSR|S_IWUSR));
	else if (tmp)
	    fd = open(realname, O_WRONLY | O_CREAT | O_EXCL, (S_IRUSR|S_IWUSR));
	else
	    fd = open(realname, O_WRONLY | O_CREAT | O_TRUNC, (S_IRUSR|S_IWUSR));

	/* First, just give up if we couldn't even open the file */
	if (fd == -1) {
	    if (!tmp && ISSET(TEMP_OPT)) {
		UNSET(TEMP_OPT);
		return do_writeout(filename, 1, 0);
	    }
	    statusbar(_("Could not open file for writing: %s"),
		      strerror(errno));
	    return -1;
	}

    }
    /* Don't follow symlink.  Create new file. */
    else {
	buf = charalloc(strlen(realname) + 8);
	strncpy(buf, realname, strlen(realname)+1);
	strcat(buf, ".XXXXXX");
	if ((fd = mkstemp(buf)) == -1) {
	    if (ISSET(TEMP_OPT)) {
		UNSET(TEMP_OPT);
		return do_writeout(filename, 1, 0);
	    }
	    statusbar(_("Could not open file for writing: %s"),
		      strerror(errno));
	    return -1;
	}
    }

    dump_buffer(fileage);
    while (fileptr != NULL && fileptr->next != NULL) {
	/* Next line is so we discount the "magic line" */
	if (filebot == fileptr && fileptr->data[0] == '\0')
	    break;

	size = write(fd, fileptr->data, strlen(fileptr->data));
	if (size == -1) {
	    statusbar(_("Could not open file for writing: %s"),
		      strerror(errno));
	    return -1;
	} else {
#ifdef DEBUG
	    fprintf(stderr, _("Wrote >%s\n"), fileptr->data);
#endif
	}
	write(fd, "\n", 1);

	fileptr = fileptr->next;
	lineswritten++;
    }

    if (fileptr != NULL) {
	size = write(fd, fileptr->data, strlen(fileptr->data));
	if (size == -1) {
	    statusbar(_("Could not open file for writing: %s"),
		      strerror(errno));
	    return -1;
	} else if (size > 0) {
	    size = write(fd, "\n", 1);
	    lineswritten++;
	    if (size == -1) {
		statusbar(_("Could not open file for writing: %s"),
			  strerror(errno));
		return -1;
	    }
	}
    }


    if (close(fd) == -1) {
	statusbar(_("Could not close %s: %s"), realname, strerror(errno));
	unlink(buf);
	return -1;
    }

    if (realexists == -1 || tmp ||
	(!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode))) {

	/* Use default umask as file permissions if file is a new file. */
	mask = umask(0);
	umask(mask);

	if (tmp)		/* We don't want anyone reading our temporary file! */
	    mask = 0600;
	else
	    mask = 0666 & ~mask;
    } else
	/* Use permissions from file we are overwriting. */
	mask = st.st_mode;

    if (!tmp && (!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode))) {
	if (unlink(realname) == -1) {
	    if (errno != ENOENT) {
		statusbar(_("Could not open %s for writing: %s"),
			  realname, strerror(errno));
		unlink(buf);
		return -1;
	    }
	}
	if (link(buf, realname) != -1)
	    unlink(buf);
	else if (errno != EPERM) {
	    statusbar(_("Could not open %s for writing: %s"),
		      name, strerror(errno));
	    unlink(buf);
	    return -1;
	} else if (rename(buf, realname) == -1) {	/* Try a rename?? */
	    statusbar(_("Could not open %s for writing: %s"),
		      realname, strerror(errno));
	    unlink(buf);
	    return -1;
	}
    }
    if (chmod(realname, mask) == -1)
	statusbar(_("Could not set permissions %o on %s: %s"),
		  mask, realname, strerror(errno));

    if (!tmp) {
	if (!nonamechange)
	    filename = mallocstrcpy(filename, realname);

	statusbar(_("Wrote %d lines"), lineswritten);
	UNSET(MODIFIED);
	titlebar(NULL);
    }
    return 1;
}

int do_writeout(char *path, int exiting, int append)
{
    int i = 0;

#ifdef NANO_EXTRA
    static int did_cred = 0;
#endif

#ifndef DISABLE_MOUSE
    currshortcut = writefile_list;
    currslen = WRITEFILE_LIST_LEN;
#endif

    answer = mallocstrcpy(answer, path);

    if ((exiting) && (ISSET(TEMP_OPT))) {
	if (filename[0]) {
	    i = write_file(answer, 0, 0, 0);
	    display_main_list();
	    return i;
	} else {
	    UNSET(TEMP_OPT);
	    do_exit();

	    /* They cancelled, abort quit */
	    return -1;
	}
    }

    while (1) {
#ifndef NANO_SMALL
	if (ISSET(MARK_ISSET) && !exiting)
	    i = statusq(1, writefile_list, WRITEFILE_LIST_LEN, "",
		    _("%s Selection to File"), append ? _("Append") : _("Write"));
	else
#endif
	    i = statusq(1, writefile_list, WRITEFILE_LIST_LEN, answer,
		    _("File Name to %s"), append ? _("Append") : _("Write"));

	if (i != -1) {

#ifndef DISABLE_BROWSER
	if (i == NANO_TOFILES_KEY) {

	    char *tmp = do_browse_from(answer);

#ifndef DISABLE_MOUSE
	    currshortcut = writefile_list;
	    currslen = WRITEFILE_LIST_LEN;
#endif

	    if (tmp != NULL) {
		answer = mallocstrcpy(answer, tmp);
	    } else
		return do_writeout(answer, exiting, append);
	} else
#endif
	if (i == NANO_APPEND_KEY)
	    return(do_writeout(answer, exiting, 1 - append));

#ifdef DEBUG
	    fprintf(stderr, _("filename is %s"), answer);
#endif

#ifdef NANO_EXTRA
	    if (exiting && !ISSET(TEMP_OPT) && !strcasecmp(answer, "zzy")
		&& !did_cred) {
		do_credits();
		did_cred = 1;
		return -1;
	    }
#endif
	    if (!append && strcmp(answer, filename)) {
		struct stat st;
		if (!stat(answer, &st)) {
		    i = do_yesno(0, 0, _("File exists, OVERWRITE ?"));

		    if (!i || (i == -1))
			continue;
		}
	    }
#ifndef NANO_SMALL

	/* Here's where we allow the selected text to be written to 
	   a separate file. */
	if (ISSET(MARK_ISSET) && !exiting) {
	    filestruct *fileagebak = fileage;	
	    filestruct *filebotbak = filebot;
	    filestruct *cutback = cutbuffer;
	    int oldmod = 0;
	    cutbuffer = NULL;

	    /* Okay, since write_file changes the filename, back it up */
	    if (ISSET(MODIFIED))
		oldmod = 1;

	    /* Now, non-destructively add the marked text to the
	       cutbuffer, and write the file out using the cutbuffer ;) */
	    if (current->lineno <= mark_beginbuf->lineno)
		cut_marked_segment(current, current_x, mark_beginbuf,
				mark_beginx, 0);
	    else
		cut_marked_segment(mark_beginbuf, mark_beginx, current,
				current_x, 0);

	    fileage = cutbuffer;
	    for (filebot = cutbuffer; filebot->next != NULL; 
			filebot = filebot->next)
		;
	    i = write_file(answer, 0, append, 1);

	    /* Now restore everything */
	    fileage = fileagebak;
	    filebot = filebotbak;
	    cutbuffer = cutback;
	    if (oldmod)
		set_modified();
	} else
#endif
	    i = write_file(answer, 0, append, 0);

#ifdef ENABLE_MULTIBUFFER
	    /* if we're not about to exit, update the current entry in
	       the open_files structure */
	    if (!exiting) {

		/* first, if the filename was changed during the save,
		   update the filename and full path stored in the
		   current entry, and then update the current entry,
		   checking for duplicate entries */
		if (strcmp(open_files->data, filename)) {
		    open_file_change_name();
		    add_open_file(1, 1);
		}
		else {

		    /* otherwise, just update the current entry without
		       checking for duplicate entries */
		    add_open_file(1, 0);
		}
	    }
#endif

	    display_main_list();
	    return i;
	} else {
	    statusbar(_("Cancelled"));
	    display_main_list();
	    return 0;
	}
    }
}

int do_writeout_void(void)
{
    return do_writeout(filename, 0, 0);
}

#ifndef DISABLE_TABCOMP

/* Return a malloc()ed string containing the actual directory, used
 * to convert ~user and ~/ notation...
 */
char *real_dir_from_tilde(char *buf)
{
    char *dirtmp = NULL, *find_user = NULL;
    int i = 1;
    struct passwd *userdata;

    /* set a default value for dirtmp, in the case user home dir not found */
    dirtmp = mallocstrcpy(dirtmp, buf);

    if (buf[0] == '~') {
	if (buf[1] == 0 || buf[1] == '/') {
	    if (getenv("HOME") != NULL) {

		free(dirtmp);
		dirtmp = charalloc(strlen(buf) + 2 + strlen(getenv("HOME")));

		sprintf(dirtmp, "%s%s", getenv("HOME"), &buf[1]);

	    }
	}
	else {

	    /* Figure how how much of the str we need to compare */
	    for (i = 1; buf[i] != '/' && buf[i] != 0; i++)
		;

	    find_user = mallocstrcpy(find_user, &buf[1]);
	    find_user[i - 1] = 0;

	    for (userdata = getpwent(); userdata != NULL && 
		  strcmp(userdata->pw_name, find_user); 
		  userdata = getpwent());

	    free(find_user);

	    if (userdata != NULL) {  /* User found */

	        free(dirtmp);
		dirtmp = charalloc(strlen(buf) + 2 + strlen(userdata->pw_dir));
		sprintf(dirtmp, "%s%s", userdata->pw_dir, &buf[i]);

	    }

	    endpwent();
	}
    }

    return dirtmp;
}

/* Tack a slash onto the string we're completing if it's a directory */
int append_slash_if_dir(char *buf, int *lastWasTab, int *place)
{
    char *dirptr;
    struct stat fileinfo;
    int ret = 0;

    dirptr = real_dir_from_tilde(buf);

    if (stat(dirptr, &fileinfo) == -1)
	ret = 0;
    else if (S_ISDIR(fileinfo.st_mode)) {
	strncat(buf, "/", 1);
	*place += 1;
	/* now we start over again with # of tabs so far */
	*lastWasTab = 0;
	ret = 1;
    }

    if (dirptr != buf)
	free(dirptr);

    return ret;
}

/*
 * These functions (username_tab_completion, cwd_tab_completion, and
 * input_tab were taken from busybox 0.46 (cmdedit.c).  Here is the notice
 * from that file:
 *
 * Termios command line History and Editting, originally
 * intended for NetBSD sh (ash)
 * Copyright (c) 1999
 *      Main code:            Adam Rogoyski <rogoyski@cs.utexas.edu>
 *      Etc:                  Dave Cinege <dcinege@psychosis.com>
 *  Majorly adjusted/re-written for busybox:
 *                            Erik Andersen <andersee@debian.org>
 *
 * You may use this code as you wish, so long as the original author(s)
 * are attributed in any redistributions of the source code.
 * This code is 'as is' with no warranty.
 * This code may safely be consumed by a BSD or GPL license.
 */

char **username_tab_completion(char *buf, int *num_matches)
{
    char **matches = (char **) NULL;
    char *matchline = NULL;
    struct passwd *userdata;

    *num_matches = 0;
    matches = nmalloc(BUFSIZ * sizeof(char *));

    strcat(buf, "*");

    while ((userdata = getpwent()) != NULL) {

	if (check_wildcard_match(userdata->pw_name, &buf[1]) == TRUE) {

	    /* Cool, found a match.  Add it to the list
	     * This makes a lot more sense to me (Chris) this way...
	     */

	    matchline = charalloc(strlen(userdata->pw_name) + 2);
	    sprintf(matchline, "~%s", userdata->pw_name);
	    matches[*num_matches] = matchline;
	    ++*num_matches;

	    /* If there's no more room, bail out */
	    if (*num_matches == BUFSIZ)
		break;
	}
    }
    endpwent();

    return (matches);
}

/* This was originally called exe_n_cwd_tab_completion, but we're not
   worried about executables, only filenames :> */

char **cwd_tab_completion(char *buf, int *num_matches)
{
    char *dirName, *dirtmp = NULL, *tmp = NULL, *tmp2 = NULL;
    char **matches = (char **) NULL;
    DIR *dir;
    struct dirent *next;

    matches = nmalloc(BUFSIZ * sizeof(char *));

    /* Stick a wildcard onto the buf, for later use */
    strcat(buf, "*");

    /* Okie, if there's a / in the buffer, strip out the directory part */
    if (strcmp(buf, "") && strstr(buf, "/")) {
	dirName = charalloc(strlen(buf) + 1);
	tmp = buf + strlen(buf);
	while (*tmp != '/' && tmp != buf)
	    tmp--;

	tmp++;

	strncpy(dirName, buf, tmp - buf + 1);
	dirName[tmp - buf] = 0;

    } else {

#ifdef PATH_MAX
	if ((dirName = getcwd(NULL, PATH_MAX+1)) == NULL)
#else
	/* The better, but apparently segfault-causing way */
	if ((dirName = getcwd(NULL, 0)) == NULL)
#endif /* PATH_MAX */
	    return matches;
	else
	    tmp = buf;
    }

#ifdef DEBUG
    fprintf(stderr, "\nDir = %s\n", dirName);
    fprintf(stderr, "\nbuf = %s\n", buf);
    fprintf(stderr, "\ntmp = %s\n", tmp);
#endif

    dirtmp = real_dir_from_tilde(dirName);
    free(dirName);
    dirName = dirtmp;

#ifdef DEBUG
    fprintf(stderr, "\nDir = %s\n", dirName);
    fprintf(stderr, "\nbuf = %s\n", buf);
    fprintf(stderr, "\ntmp = %s\n", tmp);
#endif


    dir = opendir(dirName);
    if (!dir) {
	/* Don't print an error, just shut up and return */
	*num_matches = 0;
	beep();
	return (matches);
    }
    while ((next = readdir(dir)) != NULL) {

#ifdef DEBUG
	fprintf(stderr, "Comparing \'%s\'\n", next->d_name);
#endif
	/* See if this matches */
	if (check_wildcard_match(next->d_name, tmp) == TRUE) {

	    /* Cool, found a match.  Add it to the list
	     * This makes a lot more sense to me (Chris) this way...
	     */
	    tmp2 = NULL;
	    tmp2 = charalloc(strlen(next->d_name) + 1);
	    strcpy(tmp2, next->d_name);
	    matches[*num_matches] = tmp2;
	    ++*num_matches;

	    /* If there's no more room, bail out */
	    if (*num_matches == BUFSIZ)
		break;
	}
    }

    return (matches);
}

/* This function now has an arg which refers to how much the 
 * statusbar (place) should be advanced, i.e. the new cursor pos.
 */
char *input_tab(char *buf, int place, int *lastWasTab, int *newplace)
{
    /* Do TAB completion */
    static int num_matches = 0, match_matches = 0;
    static char **matches = (char **) NULL;
    int pos = place, i = 0, col = 0, editline = 0;
    int longestname = 0, is_dir = 0;
    char *foo;

    if (*lastWasTab == FALSE) {
	char *tmp, *copyto, *matchBuf;

	*lastWasTab = 1;

	/* Make a local copy of the string -- up to the position of the
	   cursor */
	matchBuf = (char *) nmalloc((strlen(buf) + 2) * sizeof(char));
	memset(matchBuf, '\0', (strlen(buf) + 2));

	strncpy(matchBuf, buf, place);
	tmp = matchBuf;

	/* skip any leading white space */
	while (*tmp && isspace((int) *tmp))
	    ++tmp;

	/* Free up any memory already allocated */
	if (matches != NULL) {
	    for (i = i; i < num_matches; i++)
		free(matches[i]);
	    free(matches);
	    matches = (char **) NULL;
	    num_matches = 0;
	}

	/* If the word starts with `~' and there is no slash in the word, 
	 * then try completing this word as a username. */

	/* FIXME -- this check is broken! */
	if (*tmp == '~' && !strchr(tmp, '/'))
	    matches = username_tab_completion(tmp, &num_matches);

	/* Try to match everything in the current working directory that
	 * matches.  */
	if (!matches)
	    matches = cwd_tab_completion(tmp, &num_matches);

	/* Don't leak memory */
	free(matchBuf);

#ifdef DEBUG
	fprintf(stderr, "%d matches found...\n", num_matches);
#endif
	/* Did we find exactly one match? */
	switch (num_matches) {
	case 0:
	    blank_edit();
	    wrefresh(edit);
	    break;
	case 1:

	    buf = nrealloc(buf, strlen(buf) + strlen(matches[0]) + 1);

	    if (strcmp(buf, "") && strstr(buf, "/")) {
		for (tmp = buf + strlen(buf); *tmp != '/' && tmp != buf;
		     tmp--);
		tmp++;
	    } else
		tmp = buf;

	    if (!strcmp(tmp, matches[0]))
		is_dir = append_slash_if_dir(buf, lastWasTab, newplace);

	    if (is_dir)
		break;

	    copyto = tmp;
	    for (pos = 0; *tmp == matches[0][pos] &&
		 pos <= strlen(matches[0]); pos++)
		tmp++;

	    /* write out the matched name */
	    strncpy(copyto, matches[0], strlen(matches[0]) + 1);
	    *newplace += strlen(matches[0]) - pos;

	    /* Is it a directory? */
	    append_slash_if_dir(buf, lastWasTab, newplace);

	    break;
	default:
	    /* Check to see if all matches share a beginning, and, if so,
	       tack it onto buf and then beep */

	    if (strcmp(buf, "") && strstr(buf, "/")) {
		for (tmp = buf + strlen(buf); *tmp != '/' && tmp != buf;
		     tmp--);
		tmp++;
	    } else
		tmp = buf;

	    for (pos = 0; *tmp == matches[0][pos] && *tmp != 0 &&
		 pos <= strlen(matches[0]); pos++)
		tmp++;

	    while (1) {
		match_matches = 0;

		for (i = 0; i < num_matches; i++) {
		    if (matches[i][pos] == 0)
			break;
		    else if (matches[i][pos] == matches[0][pos])
			match_matches++;
		}
		if (match_matches == num_matches &&
		    (i == num_matches || matches[i] != 0)) {
		    /* All the matches have the same character at pos+1,
		       so paste it into buf... */
		    buf = nrealloc(buf, strlen(buf) + 2);
		    strncat(buf, matches[0] + pos, 1);
		    *newplace += 1;
		    pos++;
		} else {
		    beep();
		    break;
		}
	    }
	    break;
	}
    } else {
	/* Ok -- the last char was a TAB.  Since they
	 * just hit TAB again, print a list of all the
	 * available choices... */
	if (matches && num_matches > 0) {

	    /* Blank the edit window, and print the matches out there */
	    blank_edit();
	    wmove(edit, 0, 0);

	    editline = 0;

	    /* Figure out the length of the longest filename */
	    for (i = 0; i < num_matches; i++)
		if (strlen(matches[i]) > longestname)
		    longestname = strlen(matches[i]);

	    if (longestname > COLS - 1)
		longestname = COLS - 1;

	    foo = charalloc(longestname + 5);

	    /* Print the list of matches */
	    for (i = 0, col = 0; i < num_matches; i++) {

		/* make each filename shown be the same length as the longest
		   filename, with two spaces at the end */
		snprintf(foo, longestname + 1, matches[i]);
		while (strlen(foo) < longestname)
		    strcat(foo, " ");

		strcat(foo, "  ");

		/* Disable el cursor */
		curs_set(0);
		/* now, put the match on the screen */
		waddnstr(edit, foo, strlen(foo));
		col += strlen(foo);

		/* And if the next match isn't going to fit on the
		   line, move to the next one */
		if (col > (COLS - longestname) && matches[i + 1] != NULL) {
		    editline++;
		    wmove(edit, editline, 0);
		    if (editline == editwinrows - 1) {
			waddstr(edit, _("(more)"));
			break;
		    }
		    col = 0;
		}
	    }
	    free(foo);
	    wrefresh(edit);
	} else
	    beep();

    }

    edit_refresh();
    curs_set(1);
    return buf;
}
#endif

#ifndef DISABLE_BROWSER

/* Return the stat of the file pointed to by path */
struct stat filestat(const char *path) {
    struct stat st;

    stat(path, &st);
    return st;
}

/* Our sort routine for file listings - sort directories before
 * files, and then alphabetically
 */ 
int diralphasort(const void *va, const void *vb) {
    struct stat file1info, file2info;
    char *a = *(char **)va, *b = *(char **)vb;
    int aisdir, bisdir;

    aisdir = (stat(a, &file1info) != -1) && S_ISDIR(file1info.st_mode);
    bisdir = (stat(b, &file2info) != -1) && S_ISDIR(file2info.st_mode);

    if (aisdir && !bisdir) return -1;
    if (!aisdir && bisdir) return 1;

#ifdef HAVE_STRCASECMP
    return(strcasecmp(a,b));
#else
    return(strcmp(a,b));
#endif

}


/* Initialize the browser code, including the list of files in *path */
char **browser_init(char *path, int *longest, int *numents)
{
    DIR *dir;
    struct dirent *next;
    char **filelist = (char **) NULL;
    int i = 0;

    dir = opendir(path);
    if (!dir) 
	return NULL;

    *numents = 0;
    while ((next = readdir(dir)) != NULL) {
	if (!strcmp(next->d_name, "."))
	   continue;
	(*numents)++;
	if (strlen(next->d_name) > *longest)
	    *longest = strlen(next->d_name);
    }
    rewinddir(dir);
    *longest += 10;

    filelist = nmalloc(*numents * sizeof (char *));

    while ((next = readdir(dir)) != NULL) {
	if (!strcmp(next->d_name, "."))
	   continue;
	filelist[i] = charalloc(strlen(next->d_name) + strlen(path) + 2);

	if (!strcmp(path, "/"))
	    snprintf(filelist[i], strlen(next->d_name) + strlen(path) + 1, 
			"%s%s", path, next->d_name);
	else
	    snprintf(filelist[i], strlen(next->d_name) + strlen(path) + 2, 
			"%s/%s", path, next->d_name);
	i++;
    }

    if (*longest > COLS - 1)
	*longest = COLS - 1;

    return filelist;
}

/* Free our malloc()ed memory */
void free_charptrarray(char **array, int len)
{
    int i;

    for (i = 0; i < len - 1; i++)
	free(array[i]);
    free(array);
}

/* only print the last part of a path; isn't there a shell 
   command for this? */
char *tail(char *foo)
{
    char *tmp = NULL;

    tmp = foo + strlen(foo);
    while (*tmp != '/' && tmp != foo)
	tmp--;

    tmp++;

    return tmp;
}

/* Strip one dir from the end of a string */
void striponedir(char *foo)
{
    char *tmp = NULL;

    /* Don't strip the root dir */
    if (!strcmp(foo, "/"))
	return;

    tmp = foo + strlen(foo);
    if (*tmp == '/')
	tmp--;

    while (*tmp != '/' && tmp != foo)
	tmp--;

    if (tmp != foo)
	*tmp = 0;
    else
	*(tmp+1) = 0;

    return;
}

/* Our browser function.  inpath is the path to start browsing from */
char *do_browser(char *inpath)
{
    struct stat st;
    char *foo, *retval = NULL;
    static char *path = NULL;
    int numents = 0, i = 0, j = 0, kbinput = 0, longest = 0, abort = 0;
    int col = 0, selected = 0, editline = 0, width = 0, filecols = 0;
    int lineno = 0, kb;
    char **filelist = (char **) NULL;
#ifndef DISABLE_MOUSE
#ifdef NCURSES_MOUSE_VERSION
    MEVENT mevent;
#endif
#endif

    /* If path isn't the same as inpath, we are being passed a new
	dir as an arg.  We free it here so it will be copied from 
	inpath below */
    if (path != NULL && strcmp(path, inpath)) {
	free(path);
	path = NULL;
    }

    /* if path doesn't exist, make it so */
    if (path == NULL)
	path = mallocstrcpy(path, inpath);

    filelist = browser_init(path, &longest, &numents);
    foo = charalloc(longest + 8);

    /* Sort the list by directory first, then alphabetically */
    qsort(filelist, numents, sizeof(char *), diralphasort);

    kb = keypad_on(edit, 1);
    titlebar(path);
    bottombars(browser_list, BROWSER_LIST_LEN);
    curs_set(0);
    wmove(edit, 0, 0);
    i = 0;
    width = 0;
    filecols = 0;

    /* Loop invariant: Microsoft sucks. */
    do {
	DIR *test_dir;

	blank_statusbar_refresh();

#ifndef DISABLE_MOUSE
	currshortcut = browser_list;
	currslen = BROWSER_LIST_LEN;
#endif

 	editline = 0;
	col = 0;
	    
	/* Compute line number we're on now, so we don't divide by zero later */
	if (width == 0)
	    lineno = selected;
	else
	    lineno = selected / width;

	switch (kbinput) {

#ifndef DISABLE_MOUSE
#ifdef NCURSES_MOUSE_VERSION
        case KEY_MOUSE:
	    if (getmouse(&mevent) == ERR)
	        return retval;
 
	    /* If they clicked in the edit window, they probably clicked
		on a file */
 	    if (wenclose(edit, mevent.y, mevent.x)) { 
		int selectedbackup = selected;

		mevent.y -= 2;

		/* If we're on line 0, don't toy with finding out what
			page we're on */
		if (lineno / editwinrows == 0)
		    selected = mevent.y * width + mevent.x / longest;
		else
		    selected = (lineno / editwinrows) * editwinrows * width 
			+ mevent.y * width + mevent.x / longest;

		/* If we're off the screen, reset to the last item.
		   If we clicked where we did last time, select this name! */
		if (selected > numents - 1)
		    selected = numents - 1;
		else if (selectedbackup == selected) {
		    ungetch('s');	/* Unget the 'select' key */
		    break;
		}
	    } else	/* Must be clicking a shortcut */
		do_mouse();

            break;
#endif
#endif
	case NANO_UP_KEY:
	case KEY_UP:
	case 'u':
	    if (selected - width >= 0)
		selected -= width;
	    break;
	case NANO_BACK_KEY:
	case KEY_LEFT:
	case NANO_BACKSPACE_KEY:
	case 127:
	case 'l':
	    if (selected > 0)
		selected--;
	    break;
	case KEY_DOWN:
	case NANO_DOWN_KEY:
	case 'd':
	    if (selected + width <= numents - 1)
		selected += width;
	    break;
	case KEY_RIGHT:
	case NANO_FORWARD_KEY:
	case 'r':
	    if (selected < numents - 1)
		selected++;
	    break;
	case NANO_PREVPAGE_KEY:
	case NANO_PREVPAGE_FKEY:
	case KEY_PPAGE:
	case '-':

	    if (lineno % editwinrows == 0) {
		if (selected - (editwinrows * width) >= 0)
		    selected -= editwinrows * width; 
		else
		    selected = 0;
	    }
	    else if (selected - (editwinrows + 
		lineno % editwinrows) * width  >= 0)

		selected -= (editwinrows + lineno % editwinrows) * width; 
	    else
		selected = 0;
	    break;
	case NANO_NEXTPAGE_KEY:
	case NANO_NEXTPAGE_FKEY:
	case KEY_NPAGE:	
	case ' ':
	    if (lineno % editwinrows == 0) {
		if (selected + (editwinrows * width) <= numents - 1)
		    selected += editwinrows * width; 
		else
		    selected = numents - 1;
	    }
	    else if (selected + (editwinrows - 
			lineno %  editwinrows) * width <= numents - 1)
 		selected += (editwinrows - lineno % editwinrows) * width; 
 	    else
		selected = numents - 1;
	    break;
	case KEY_ENTER:
	case NANO_ENTER_KEY:
	case 's': /* More Pico compatibility */
	case 'S':

	    /* You can't cd up from / */
	    if (!strcmp(filelist[selected], "/..") && !strcmp(path, "/")) {
		statusbar(_("Can't move up a directory"));
		break;
	    }

	    path = mallocstrcpy(path, filelist[selected]);

	    st = filestat(path);
	    if (S_ISDIR(st.st_mode)) {
		if ((test_dir = opendir(path)) == NULL) {
		    /* We can't open this dir for some reason.  Complain */
		    statusbar(_("Can't open \"%s\": %s"), path, strerror(errno));
		    striponedir(path);
		    align(&path);
		    break;
		} 
		closedir(test_dir);

		if (!strcmp("..", tail(path))) {
		    /* They want to go up a level, so strip off .. and the
			current dir */
		    striponedir(path);
		    striponedir(path);
		    align(&path);
		}

		/* Start over again with the new path value */
		return do_browser(path);
	    } else {
		retval = path;
		abort = 1;
	    }
	    break;
	/* Goto a specific directory */
	case 'g':	/* Pico compatibility */
	case 'G':
	case NANO_GOTO_KEY:

	    curs_set(1);
	    j = statusq(0, gotodir_list, GOTODIR_LIST_LEN, "", _("Goto Directory"));
	    bottombars(browser_list, BROWSER_LIST_LEN);
	    curs_set(0);

	    if (j < 0) {
		statusbar(_("Goto Cancelled"));
		break;
	    }

	    if (answer[0] != '/') {
		char *saveanswer = NULL;

		saveanswer = mallocstrcpy(saveanswer, answer);
		answer = realloc(answer, strlen(path) + strlen(saveanswer) + 2);
		sprintf(answer, "%s/%s", path, saveanswer);
		free(saveanswer);
	    }

	    if ((test_dir = opendir(answer)) == NULL) {
		/* We can't open this dir for some reason.  Complain */
		statusbar(_("Can't open \"%s\": %s"), answer, strerror(errno));
		break;
	    } 
	    closedir(test_dir);

	    /* Start over again with the new path value */
	    path = mallocstrcpy(path, answer);
	    return do_browser(path);

	/* Stuff we want to abort the browser */
	case 'q':
	case 'Q':
	case 'e':	/* Pico compatibility, yeech */
	case 'E':
	case NANO_CANCEL_KEY:
	case NANO_EXIT_FKEY:
		abort = 1;
		break;
	}
	if (abort)
	    break;

	blank_edit();

	if (width)
	    i = width * editwinrows * ((selected / width) / editwinrows);
	else
	    i = 0;

	wmove(edit, 0, 0);
	for (j = i; j < numents && editline <= editwinrows - 1; j++) {
	    filecols++;

	    strncpy(foo, tail(filelist[j]), strlen(tail(filelist[j])) + 1);
	    while (strlen(foo) < longest)
		strcat(foo, " ");
	    col += strlen(foo);

	    /* Put file info in the string also */
	    /* We use lstat here to detect links; then, if we find a
		symlink, we examine it via stat() to see if it is a
		directory or just a file symlink */
	    lstat(filelist[j], &st);
	    if (S_ISDIR(st.st_mode))
		strcpy(foo + longest - 5, "(dir)");
	    else {
		if (S_ISLNK(st.st_mode)) {
		     /* Aha!  It's a symlink!  Now, is it a dir?  If so,
			mark it as such */
		    st = filestat(filelist[j]);
		    if (S_ISDIR(st.st_mode))
			strcpy(foo + longest - 5, "(dir)");
		    else
			strcpy(foo + longest - 2, "--");
		} else if (st.st_size < (1 << 10)) /* less than 1 K */
		    sprintf(foo + longest - 7, "%4d  B", 
			(int) st.st_size);
		else if (st.st_size >= (1 << 30)) /* at least 1 gig */
		    sprintf(foo + longest - 7, "%4d GB", 
			(int) st.st_size >> 30);
		else if (st.st_size >= (1 << 20)) /* at least 1 meg */
		    sprintf(foo + longest - 7, "%4d MB", 
			(int) st.st_size >>     20);
		else /* Its more than 1 k and less than a meg */
		    sprintf(foo + longest - 7, "%4d KB", 
			(int) st.st_size >> 10);
	    }

	    /* Hilight the currently selected file/dir */
	    if (j == selected) {
#ifdef ENABLE_COLOR
		color_on(edit, COLOR_STATUSBAR);
#else
		wattron(edit, A_REVERSE);

#endif
	    }
	    waddnstr(edit, foo, strlen(foo));
	    if (j == selected) {
#ifdef ENABLE_COLOR
		color_off(edit, COLOR_STATUSBAR);
#else
		wattroff(edit, A_REVERSE);
#endif
	    }

	    /* And add some space between the cols */
	    waddstr(edit, "  ");
	    col += 2;

	    /* And if the next entry isn't going to fit on the
		line, move to the next one */
	    if (col > (COLS - longest)) {
		editline++;
		wmove(edit, editline, 0);
		col = 0;
		if (width == 0)
		    width = filecols;
	    }
	}
 	wrefresh(edit);
    } while ((kbinput = wgetch(edit)) != NANO_EXIT_KEY);
    curs_set(1);
    blank_edit();
    titlebar(NULL); 
    edit_refresh();
    kb = keypad_on(edit, kb);

    /* cleanup */
    free_charptrarray(filelist, numents);
    free(foo);
    return retval;
}

/* Browser front end, checks to see if inpath has a dir in it and, if so,
 starts do_browser from there, else from the current dir */
char *do_browse_from(char *inpath)
{
    struct stat st;
    char *tmp = NULL;

    tmp = mallocstrcpy(tmp, inpath);


    /* If there's no / in the string, we may as well start from . */
    if (tmp == NULL || *tmp == '\0' || !strstr(tmp, "/")) {
#ifdef PATH_MAX
	char *from = getcwd(NULL, PATH_MAX+1);
#else
	char *from = getcwd(NULL, 0);
#endif /* PATH_MAX */
	return do_browser(from ? from : "./");
    }

    /* If the string is a directory, pass do_browser that */
    st = filestat(tmp);
    if (S_ISDIR(st.st_mode))
	return do_browser(tmp);

    /* Okay, there's a dir in there, but not at the end of the string... 
       try stripping it off */
    striponedir(tmp);
    align(&tmp);
    return do_browser(tmp);

}



#endif