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smol/files.c

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/* $Id$ */
/**************************************************************************
* files.c *
* *
* Copyright (C) 1999-2003 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 2, 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/wait.h>
#include <sys/stat.h>
#include <utime.h>
#include <fcntl.h>
#include <errno.h>
#include <ctype.h>
#include <dirent.h>
#include <pwd.h>
#include <assert.h>
#include "proto.h"
#include "nano.h"
/* Set a default value for PATH_MAX, so we can use it below in lines like
path = getcwd(NULL, PATH_MAX + 1); */
#ifndef PATH_MAX
#define PATH_MAX -1
#endif
#ifndef NANO_SMALL
static int fileformat = 0; /* 0 = *nix, 1 = DOS, 2 = Mac */
#endif
/* Load file into edit buffer - takes data from file struct. */
void load_file(int update)
{
current = fileage;
#ifdef ENABLE_MULTIBUFFER
/* if update is zero, add a new entry to the open_files structure;
otherwise, update the current entry (the latter is needed in the
case of the alternate spell checker) */
add_open_file(update);
#endif
#ifdef ENABLE_COLOR
update_color();
edit_refresh();
#endif
}
/* What happens when there is no file to open? aiee! */
void new_file(void)
{
fileage = make_new_node(NULL);
fileage->data = charalloc(1);
fileage->data[0] = '\0';
filebot = fileage;
edittop = fileage;
editbot = fileage;
current = fileage;
current_x = 0;
totlines = 1;
totsize = 0;
#ifdef ENABLE_MULTIBUFFER
/* if there aren't any entries in open_files, create the entry for
this new file; without this, if nano is started without a filename
on the command line, a new file will be created, but it will be
given no open_files entry */
if (open_files == NULL) {
add_open_file(0);
/* turn off view mode in this case; this is for consistency
whether multibuffers are compiled in or not */
UNSET(VIEW_MODE);
}
#else
/* if multibuffers haven't been compiled in, turn off view mode
unconditionally; otherwise, don't turn them off (except in the
above case), so that we can view multiple files properly */
UNSET(VIEW_MODE);
#endif
#ifdef ENABLE_COLOR
update_color();
edit_refresh();
#endif
}
filestruct *read_line(char *buf, filestruct *prev, int *line1ins, int len)
{
filestruct *fileptr = (filestruct *)nmalloc(sizeof(filestruct));
/* nulls to newlines; len is the string's real length here */
unsunder(buf, len);
assert(strlen(buf) == len);
fileptr->data = mallocstrcpy(NULL, buf);
#ifndef NANO_SMALL
/* If it's a DOS file (CRLF), and file conversion isn't disabled,
strip out the CR part */
if (!ISSET(NO_CONVERT) && len > 0 && buf[len - 1] == '\r') {
fileptr->data[len - 1] = '\0';
totsize--;
if (fileformat == 0)
fileformat = 1;
}
#endif
if (*line1ins != 0 || fileage == NULL) {
/* Special case, insert with cursor on 1st line. */
fileptr->prev = NULL;
fileptr->next = fileage;
fileptr->lineno = 1;
if (*line1ins != 0) {
*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!) */
edittop = fileptr;
} else
filebot = fileptr;
fileage = fileptr;
} else {
assert(prev != NULL);
fileptr->prev = prev;
fileptr->next = NULL;
fileptr->lineno = prev->lineno + 1;
prev->next = fileptr;
}
return fileptr;
}
int read_file(FILE *f, const char *filename, int quiet)
{
int num_lines = 0, len = 0;
char input = '\0'; /* current input character */
char *buf;
long i = 0, bufx = 128;
filestruct *fileptr = current, *tmp = NULL;
#ifndef NANO_SMALL
int old_no_convert = ISSET(NO_CONVERT);
#endif
int line1ins = 0;
int input_int;
buf = charalloc(bufx);
buf[0] = '\0';
if (current != NULL) {
if (current == fileage)
line1ins = 1;
else
fileptr = current->prev;
tmp = fileptr;
}
/* For the assertion in read_line(), it must be true that if current is
* NULL then so is fileage. */
assert(current != NULL || fileage == NULL);
/* Read the entire file into file struct. */
while ((input_int = getc(f)) != EOF) {
input = (char)input_int;
#ifndef NANO_SMALL
/* If the file has binary chars in it, don't stupidly
assume it's a DOS or Mac formatted file if it hasn't been
detected as one already! */
if (fileformat == 0 && !ISSET(NO_CONVERT)
&& is_cntrl_char((int)input) != 0 && input != '\t'
&& input != '\r' && input != '\n')
SET(NO_CONVERT);
#endif
if (input == '\n') {
/* read in the line properly */
fileptr = read_line(buf, fileptr, &line1ins, len);
/* reset the line length, in preparation for the next line */
len = 0;
num_lines++;
buf[0] = '\0';
i = 0;
#ifndef NANO_SMALL
/* If it's a Mac file (no LF just a CR), and file conversion
isn't disabled, handle it! */
} else if (!ISSET(NO_CONVERT) && i > 0 && buf[i - 1] == '\r') {
fileformat = 2;
/* read in the line properly */
fileptr = read_line(buf, fileptr, &line1ins, len);
/* reset the line length, in preparation for the next line;
since we've already read in the next character, reset it
to 1 instead of 0 */
len = 1;
num_lines++;
totsize++;
buf[0] = input;
buf[1] = '\0';
i = 1;
#endif
} else {
/* Calculate the total length of the line; it might have
nulls in it, so we can't just use strlen(). */
len++;
/* 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) {
bufx += 128;
buf = nrealloc(buf, bufx);
}
buf[i] = input;
buf[i + 1] = '\0';
i++;
}
totsize++;
}
/* This conditional duplicates previous read_byte() behavior;
perhaps this could use some better handling. */
if (ferror(f))
nperror(filename);
fclose(f);
/* Did we not get a newline but still have stuff to do? */
if (len > 0) {
#ifndef NANO_SMALL
/* If file conversion isn't disabled, the last character in
this file is a CR and fileformat isn't set yet, make sure
it's set to Mac format */
if (!ISSET(NO_CONVERT) && buf[len - 1] == '\r' && fileformat == 0)
fileformat = 2;
#endif
/* read in the LAST line properly */
fileptr = read_line(buf, fileptr, &line1ins, len);
num_lines++;
totsize++;
buf[0] = '\0';
}
#ifndef NANO_SMALL
else if (!ISSET(NO_CONVERT) && input == '\r') {
/* If file conversion isn't disabled and the last character in
this file is a CR, read it in properly as a (Mac format)
line */
buf[0] = input;
buf[1] = '\0';
len = 1;
fileptr = read_line(buf, fileptr, &line1ins, len);
num_lines++;
totsize++;
buf[0] = '\0';
}
#endif
free(buf);
#ifndef NANO_SMALL
/* If NO_CONVERT wasn't set before we read the file, but it is now,
unset it again. */
if (!old_no_convert && ISSET(NO_CONVERT))
UNSET(NO_CONVERT);
#endif
/* Did we even GET a file if we don't already have one? */
if (totsize == 0 || fileptr == NULL)
new_file();
/* Did we try to insert a file of 0 bytes? */
if (num_lines != 0) {
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--;
load_file(quiet);
}
}
#ifndef NANO_SMALL
if (fileformat == 2)
statusbar(P_("Read %d line (Converted from Mac format)",
"Read %d lines (Converted from Mac format)",
num_lines), num_lines);
else if (fileformat == 1)
statusbar(P_("Read %d line (Converted from DOS format)",
"Read %d lines (Converted from DOS format)",
num_lines), num_lines);
else
#endif
statusbar(P_("Read %d line", "Read %d lines", num_lines),
num_lines);
totlines += num_lines;
return 1;
}
/* Open the file (and decide if it exists). */
int open_file(const char *filename, int insert, int quiet)
{
int fd;
FILE *f;
struct stat fileinfo;
if (filename[0] == '\0' || stat(filename, &fileinfo) == -1) {
if (insert && !quiet) {
statusbar(_("\"%s\" not found"), filename);
return -1;
} else {
/* We have a new file */
statusbar(_("New File"));
new_file();
}
} else if (S_ISDIR(fileinfo.st_mode) || S_ISCHR(fileinfo.st_mode) ||
S_ISBLK(fileinfo.st_mode)) {
/* Don't open character or block files. Sorry, /dev/sndstat! */
statusbar(S_ISDIR(fileinfo.st_mode) ? _("\"%s\" is a directory") :
_("File \"%s\" is a device file"), filename);
if (!insert)
new_file();
return -1;
} else if ((fd = open(filename, O_RDONLY)) == -1) {
/* If we're in multibuffer mode, don't be quiet when an error
occurs while opening a file */
if (!quiet
#ifdef ENABLE_MULTIBUFFER
|| ISSET(MULTIBUFFER)
#endif
)
statusbar("%s: %s", strerror(errno), filename);
if (!insert)
new_file();
return -1;
} else { /* File is A-OK */
if (!quiet)
statusbar(_("Reading File"));
f = fdopen(fd, "rb"); /* Binary for our own line-end munging */
if (f == NULL) {
nperror("fdopen");
close(fd);
return -1;
}
read_file(f, filename, quiet);
#ifndef NANO_SMALL
stat(filename, &originalfilestat);
#endif
}
return 1;
}
/* This function will return the name of the first available extension
* of a filename (starting with the filename, then filename.1, etc).
* Memory is allocated for the return value. If no writable extension
* exists, we return "". */
char *get_next_filename(const char *name)
{
int i = 0;
char *buf = NULL;
struct stat fs;
buf = charalloc(strlen(name) + num_of_digits(INT_MAX) + 2);
strcpy(buf, name);
while (1) {
if (stat(buf, &fs) == -1)
return buf;
if (i == INT_MAX)
break;
i++;
strcpy(buf, name);
sprintf(&buf[strlen(name)], ".%d", i);
}
/* We get here only if there is no possible save file. */
buf[0] = '\0';
return buf;
}
int do_insertfile(int loading_file)
{
int i, old_current_x = current_x;
char *realname = NULL;
static char *inspath = NULL;
if (inspath == NULL) {
inspath = charalloc(1);
inspath[0] = '\0';
}
wrap_reset();
#if !defined(DISABLE_BROWSER) || !defined(NANO_SMALL) && defined(ENABLE_MULTIBUFFER)
start_again: /* Goto here when the user cancels the file browser. */
#endif
#if !defined(DISABLE_BROWSER) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION))
currshortcut = insertfile_list;
#endif
#ifndef DISABLE_OPERATINGDIR
if (operating_dir != NULL && strcmp(operating_dir, ".") != 0)
#ifdef ENABLE_MULTIBUFFER
if (ISSET(MULTIBUFFER))
i = statusq(1, insertfile_list, inspath,
#ifndef NANO_SMALL
0,
#endif
_("File to insert into new buffer [from %s] "),
operating_dir);
else
#endif
i = statusq(1, insertfile_list, inspath,
#ifndef NANO_SMALL
0,
#endif
_("File to insert [from %s] "),
operating_dir);
else
#endif
#ifdef ENABLE_MULTIBUFFER
if (ISSET(MULTIBUFFER))
i = statusq(1, insertfile_list, inspath,
#ifndef NANO_SMALL
0,
#endif
_("File to insert into new buffer [from ./] "));
else
#endif /* ENABLE_MULTIBUFFER */
i = statusq(1, insertfile_list, inspath,
#ifndef NANO_SMALL
0,
#endif
_("File to insert [from ./] "));
if (i != -1) {
inspath = mallocstrcpy(inspath, answer);
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), answer);
#endif
#ifndef NANO_SMALL
#ifdef ENABLE_MULTIBUFFER
if (i == TOGGLE_LOAD_KEY) {
/* Don't allow toggling if we're in view mode. */
if (!ISSET(VIEW_MODE))
TOGGLE(MULTIBUFFER);
loading_file = ISSET(MULTIBUFFER);
goto start_again;
}
#endif /* ENABLE_MULTIBUFFER */
if (i == NANO_EXTCMD_KEY) {
int ts = statusq(TRUE, extcmd_list, "", NULL,
_("Command to execute"));
if (ts == -1 || answer == NULL || answer[0] == '\0') {
statusbar(_("Cancelled"));
UNSET(KEEP_CUTBUFFER);
display_main_list();
return 0;
}
}
#endif /* !NANO_SMALL */
#ifndef DISABLE_BROWSER
if (i == NANO_TOFILES_KEY) {
char *tmp = do_browse_from(answer);
if (tmp != NULL) {
free(answer);
answer = tmp;
resetstatuspos = 1;
} else
goto start_again;
}
#endif
#ifndef DISABLE_OPERATINGDIR
if (i != NANO_EXTCMD_KEY && check_operating_dir(answer, FALSE)) {
statusbar(_("Can't insert file from outside of %s"),
operating_dir);
return 0;
}
#endif
#ifdef ENABLE_MULTIBUFFER
if (loading_file) {
/* update the current entry in the open_files structure */
add_open_file(1);
new_file();
UNSET(MODIFIED);
#ifndef NANO_SMALL
UNSET(MARK_ISSET);
#endif
}
#endif
#ifndef NANO_SMALL
if (i == NANO_EXTCMD_KEY) {
realname = mallocstrcpy(realname, "");
i = open_pipe(answer);
} else
#endif /* NANO_SMALL */
{
realname = real_dir_from_tilde(answer);
i = open_file(realname, 1, loading_file);
}
#ifdef ENABLE_MULTIBUFFER
if (loading_file) {
/* if there was an error opening the file, free() realname,
free() fileage (which now points to the new buffer we
created to hold the file), reload the buffer we had open
before, and skip the insertion; otherwise, save realname
in filename and continue the insertion */
if (i == -1) {
free(realname);
free(fileage);
load_open_file();
goto skip_insert;
} else
filename = mallocstrcpy(filename, realname);
}
#endif
free(realname);
#ifdef DEBUG
dump_buffer(fileage);
#endif
#ifdef ENABLE_MULTIBUFFER
if (loading_file)
load_file(0);
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
#ifdef ENABLE_MULTIBUFFER
if (!loading_file) {
#endif
/* Restore the old x-coordinate position */
current_x = old_current_x;
#ifdef ENABLE_MULTIBUFFER
}
#endif
/* If we've gone off the bottom, recenter; otherwise, just redraw */
if (current->lineno > editbot->lineno)
edit_update(current, CENTER);
else
edit_refresh();
} else {
statusbar(_("Cancelled"));
i = 0;
}
#ifdef ENABLE_MULTIBUFFER
skip_insert:
#endif
free(inspath);
inspath = NULL;
UNSET(KEEP_CUTBUFFER);
display_main_list();
return i;
}
int do_insertfile_void(void)
{
int result = 0;
#ifdef ENABLE_MULTIBUFFER
if (ISSET(VIEW_MODE)) {
if (ISSET(MULTIBUFFER))
result = do_insertfile(1);
else
statusbar(_("Key illegal in non-multibuffer mode"));
}
else
result = do_insertfile(ISSET(MULTIBUFFER));
#else
result = do_insertfile(0);
#endif
display_main_list();
return result;
}
#ifdef ENABLE_MULTIBUFFER
/* Create a new openfilestruct node. */
openfilestruct *make_new_opennode(openfilestruct *prevnode)
{
openfilestruct *newnode = nmalloc(sizeof(openfilestruct));
newnode->filename = NULL;
newnode->fileage = NULL;
newnode->filebot = NULL;
newnode->prev = prevnode;
newnode->next = NULL;
return newnode;
}
/* Splice a node into an existing openfilestruct. */
void splice_opennode(openfilestruct *begin, openfilestruct *newnode,
openfilestruct *end)
{
newnode->next = end;
newnode->prev = begin;
begin->next = newnode;
if (end != NULL)
end->prev = newnode;
}
/* Unlink a node from the rest of the openfilestruct. */
void unlink_opennode(const openfilestruct *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 openfilestruct. */
void delete_opennode(openfilestruct *fileptr)
{
if (fileptr != NULL) {
if (fileptr->filename != NULL)
free(fileptr->filename);
if (fileptr->fileage != NULL)
free_filestruct(fileptr->fileage);
free(fileptr);
}
}
/* Deallocate all memory associated with this and later files,
* including the lines of text. */
void free_openfilestruct(openfilestruct *src)
{
if (src != NULL) {
while (src->next != NULL) {
src = src->next;
delete_opennode(src->prev);
#ifdef DEBUG
fprintf(stderr, _("%s: free'd a node, YAY!\n"), "delete_opennode()");
#endif
}
delete_opennode(src);
#ifdef DEBUG
fprintf(stderr, _("%s: free'd last node.\n"), "delete_opennode()");
#endif
}
}
/*
* Add/update an entry to the open_files openfilestruct. If update is
* zero, a new entry is created; otherwise, the current entry is updated.
* Return 0 on success or 1 on error.
*/
int add_open_file(int update)
{
openfilestruct *tmp;
if (fileage == NULL || current == NULL || filename == NULL)
return 1;
/* if no entries, make the first one */
if (open_files == NULL)
open_files = make_new_opennode(NULL);
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\n"), open_files->filename);
#endif
tmp = make_new_opennode(NULL);
splice_opennode(open_files, tmp, open_files->next);
open_files = open_files->next;
}
/* save current filename */
open_files->filename = mallocstrcpy(open_files->filename, filename);
#ifndef NANO_SMALL
/* save the file's stat */
open_files->originalfilestat = originalfilestat;
#endif
/* 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->file_lineno = current->lineno;
/* if we're updating, save current modification status (and marking
status, if available) */
if (update) {
#ifndef NANO_SMALL
open_files->file_flags = (MODIFIED & ISSET(MODIFIED)) | (MARK_ISSET & ISSET(MARK_ISSET));
if (ISSET(MARK_ISSET)) {
open_files->file_mark_beginbuf = mark_beginbuf;
open_files->file_mark_beginx = mark_beginx;
}
#else
open_files->file_flags = (MODIFIED & ISSET(MODIFIED));
#endif
}
/* if we're not in view mode and not updating, the file contents
might have changed, so save the filestruct; otherwise, don't */
if (!(ISSET(VIEW_MODE) && !update)) {
/* save current file buffer */
open_files->fileage = fileage;
open_files->filebot = filebot;
}
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), open_files->filename);
#endif
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 == NULL)
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->filename);
#ifndef NANO_SMALL
originalfilestat = open_files->originalfilestat;
#endif
fileage = open_files->fileage;
current = fileage;
filebot = open_files->filebot;
totlines = open_files->file_totlines;
totsize = open_files->file_totsize;
/* restore modification status */
if (open_files->file_flags & MODIFIED)
SET(MODIFIED);
else
UNSET(MODIFIED);
#ifndef NANO_SMALL
/* restore marking status */
if (open_files->file_flags & MARK_ISSET) {
mark_beginbuf = open_files->file_mark_beginbuf;
mark_beginx = open_files->file_mark_beginx;
SET(MARK_ISSET);
} else
UNSET(MARK_ISSET);
#endif
#ifdef ENABLE_COLOR
update_color();
#endif
/* restore full file position: line number, x-coordinate, y-
coordinate, place we want */
do_gotopos(open_files->file_lineno, open_files->file_current_x, open_files->file_current_y, open_files->file_placewewant);
/* update the titlebar */
clearok(topwin, FALSE);
titlebar(NULL);
/* now we're done */
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 == NULL)
return 1;
/* if we're not about to close the current entry, update it before
doing anything */
if (!closing_file)
add_open_file(1);
if (open_files->prev == NULL && open_files->next == NULL) {
/* only one file open */
if (!closing_file)
statusbar(_("No more open files"));
return 1;
}
if (open_files->prev != NULL) {
open_files = open_files->prev;
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), open_files->filename);
#endif
}
else if (open_files->next != NULL) {
/* if we're at the beginning, wrap around to the end */
while (open_files->next != NULL)
open_files = open_files->next;
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), open_files->filename);
#endif
}
load_open_file();
statusbar(_("Switched to %s"),
((open_files->filename[0] == '\0') ? "New Buffer" : open_files->filename));
#ifdef DEBUG
dump_buffer(current);
#endif
return 0;
}
/* This function is used by the shortcut list. */
int open_prevfile_void(void)
{
return open_prevfile(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 == NULL)
return 1;
/* if we're not about to close the current entry, update it before
doing anything */
if (!closing_file)
add_open_file(1);
if (open_files->prev == NULL && open_files->next == NULL) {
/* only one file open */
if (!closing_file)
statusbar(_("No more open files"));
return 1;
}
if (open_files->next != NULL) {
open_files = open_files->next;
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), open_files->filename);
#endif
}
else if (open_files->prev != NULL) {
/* if we're at the end, wrap around to the beginning */
while (open_files->prev != NULL) {
open_files = open_files->prev;
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), open_files->filename);
#endif
}
}
load_open_file();
statusbar(_("Switched to %s"),
((open_files->filename[0] == '\0') ? "New Buffer" : open_files->filename));
#ifdef DEBUG
dump_buffer(current);
#endif
return 0;
}
/* This function is used by the shortcut list. */
int open_nextfile_void(void)
{
return open_nextfile(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)
{
openfilestruct *tmp;
if (open_files == NULL)
return 1;
/* make sure open_files->fileage and fileage, and open_files->filebot
and filebot, are in sync; they might not be if lines have been cut
from the top or bottom of the file */
open_files->fileage = fileage;
open_files->filebot = filebot;
tmp = open_files;
if (open_nextfile(1)) {
if (open_prevfile(1))
return 1;
}
unlink_opennode(tmp);
delete_opennode(tmp);
shortcut_init(0);
display_main_list();
return 0;
}
#endif /* MULTIBUFFER */
#if !defined(DISABLE_SPELLER) || !defined(DISABLE_OPERATINGDIR)
/*
* When passed "[relative path]" or "[relative path][filename]" in
* origpath, return "[full path]" or "[full path][filename]" on success,
* or NULL on error. This is still done if the file doesn't exist but
* the relative path does (since the file could exist in memory but not
* yet on disk); it is not done if the relative path doesn't exist (since
* the first call to chdir() will fail then).
*/
char *get_full_path(const char *origpath)
{
char *newpath = NULL, *last_slash, *d_here, *d_there, *d_there_file, tmp;
int path_only, last_slash_index;
struct stat fileinfo;
char *expanded_origpath;
/* first, get the current directory, and tack a slash onto the end of
it, unless it turns out to be "/", in which case leave it alone */
#ifdef PATH_MAX
d_here = getcwd(NULL, PATH_MAX + 1);
#else
d_here = getcwd(NULL, 0);
#endif
if (d_here != NULL) {
align(&d_here);
if (strcmp(d_here, "/")) {
d_here = nrealloc(d_here, strlen(d_here) + 2);
strcat(d_here, "/");
}
/* stat origpath; if stat() fails, assume that origpath refers to
a new file that hasn't been saved to disk yet (i. e. set
path_only to 0); if stat() succeeds, set path_only to 0 if
origpath doesn't refer to a directory, or to 1 if it does */
path_only = !stat(origpath, &fileinfo) && S_ISDIR(fileinfo.st_mode);
expanded_origpath = real_dir_from_tilde(origpath);
/* save the value of origpath in both d_there and d_there_file */
d_there = mallocstrcpy(NULL, expanded_origpath);
d_there_file = mallocstrcpy(NULL, expanded_origpath);
free(expanded_origpath);
/* if we have a path but no filename, tack slashes onto the ends
of both d_there and d_there_file, if they don't end in slashes
already */
if (path_only) {
tmp = d_there[strlen(d_there) - 1];
if (tmp != '/') {
d_there = nrealloc(d_there, strlen(d_there) + 2);
strcat(d_there, "/");
d_there_file = nrealloc(d_there_file, strlen(d_there_file) + 2);
strcat(d_there_file, "/");
}
}
/* 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 == NULL)
d_there = mallocstrcpy(d_there, d_here);
else {
/* otherwise, remove all non-path elements from d_there
(i. e. everything after the last slash) */
last_slash_index = strlen(d_there) - strlen(last_slash);
null_at(&d_there, last_slash_index + 1);
/* and remove all non-file elements from d_there_file (i. e.
everything before and including the last slash); if we
have a path but no filename, don't do anything */
if (!path_only) {
last_slash = strrchr(d_there_file, '/');
last_slash++;
strcpy(d_there_file, last_slash);
align(&d_there_file);
}
/* 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,
tacking a slash on the end if we have a path but no
filename; if the saving fails, get out */
free(d_there);
#ifdef PATH_MAX
d_there = getcwd(NULL, PATH_MAX + 1);
#else
d_there = getcwd(NULL, 0);
#endif
align(&d_there);
if (d_there != NULL) {
/* add a slash to d_there, unless it's "/", in which
case we don't need it */
if (strcmp(d_there, "/")) {
d_there = nrealloc(d_there, strlen(d_there) + 2);
strcat(d_there, "/");
}
}
else
return NULL;
}
/* 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 */
/* if we have a path and a filename, newpath = d_there +
d_there_file; otherwise, newpath = d_there */
if (!path_only) {
newpath = charalloc(strlen(d_there) + strlen(d_there_file) + 1);
strcpy(newpath, d_there);
strcat(newpath, d_there_file);
}
else {
newpath = charalloc(strlen(d_there) + 1);
strcpy(newpath, d_there);
}
/* finally, clean up */
free(d_there_file);
free(d_there);
free(d_here);
}
return newpath;
}
#endif /* !DISABLE_SPELLER || !DISABLE_OPERATINGDIR */
#ifndef DISABLE_SPELLER
/*
* This function accepts a path and returns the full path (via
* get_full_path()). On error, if the path doesn't reference a
* directory, or if the directory isn't writable, it returns NULL.
*/
char *check_writable_directory(const char *path)
{
char *full_path = get_full_path(path);
int writable;
struct stat fileinfo;
/* if get_full_path() failed, return NULL */
if (full_path == NULL)
return NULL;
/* otherwise, stat() the full path to see if it's writable by the
user; set writable to 1 if it is, or 0 if it isn't */
writable = !stat(full_path, &fileinfo) && (fileinfo.st_mode & S_IWUSR);
/* if the full path doesn't end in a slash (meaning get_full_path()
found that it isn't a directory) or isn't writable, free full_path
and return NULL */
if (full_path[strlen(full_path) - 1] != '/' || writable == 0) {
free(full_path);
return NULL;
}
/* otherwise, return the full path */
return full_path;
}
/*
* This function accepts a directory name and filename prefix the same
* way that tempnam() does, determines the location for its temporary
* file the same way that tempnam() does, safely creates the temporary
* file there via mkstemp(), and returns the name of the temporary file
* the same way that tempnam() does. It does not reference the value of
* TMP_MAX because the total number of random filenames that it can
* generate using one prefix is equal to 256**6, which is a sufficiently
* large number to handle most cases. Since the behavior after tempnam()
* generates TMP_MAX random filenames is implementation-defined, my
* implementation is to go on generating random filenames regardless of
* it.
*/
char *safe_tempnam(const char *dirname, const char *filename_prefix)
{
char *full_tempdir = NULL;
const char *TMPDIR_env;
int filedesc;
/* if $TMPDIR is set and non-empty, set tempdir to it, run it through
get_full_path(), and save the result in full_tempdir; otherwise,
leave full_tempdir set to NULL */
TMPDIR_env = getenv("TMPDIR");
if (TMPDIR_env != NULL && TMPDIR_env[0] != '\0')
full_tempdir = check_writable_directory(TMPDIR_env);
/* if $TMPDIR is blank or isn't set, or isn't a writable
directory, and dirname isn't NULL, try it; otherwise, leave
full_tempdir set to NULL */
if (full_tempdir == NULL && dirname != NULL)
full_tempdir = check_writable_directory(dirname);
/* if $TMPDIR is blank or isn't set, or if it isn't a writable
directory, and dirname is NULL, try P_tmpdir instead */
if (full_tempdir == NULL)
full_tempdir = check_writable_directory(P_tmpdir);
/* if P_tmpdir didn't work, use /tmp instead */
if (full_tempdir == NULL) {
full_tempdir = charalloc(6);
strcpy(full_tempdir, "/tmp/");
}
full_tempdir = nrealloc(full_tempdir, strlen(full_tempdir) + 12);
/* like tempnam(), use only the first 5 characters of the prefix */
strncat(full_tempdir, filename_prefix, 5);
strcat(full_tempdir, "XXXXXX");
filedesc = mkstemp(full_tempdir);
/* if mkstemp succeeded, close the resulting file; afterwards, it'll be
0 bytes long, so delete it; finally, return the filename (all that's
left of it) */
if (filedesc != -1) {
close(filedesc);
unlink(full_tempdir);
return full_tempdir;
}
free(full_tempdir);
return NULL;
}
#endif /* !DISABLE_SPELLER */
#ifndef DISABLE_OPERATINGDIR
/* Initialize full_operating_dir based on operating_dir. */
void init_operating_dir(void)
{
assert(full_operating_dir == NULL);
if (operating_dir == NULL)
return;
full_operating_dir = get_full_path(operating_dir);
/* If get_full_path() failed or the operating directory is
inaccessible, unset operating_dir. */
if (full_operating_dir == NULL || chdir(full_operating_dir) == -1) {
free(full_operating_dir);
full_operating_dir = NULL;
free(operating_dir);
operating_dir = NULL;
}
}
/*
* Check to see if we're inside the operating directory. Return 0 if we
* are, or 1 otherwise. If allow_tabcomp is nonzero, allow incomplete
* names that would be matches for the operating directory, so that tab
* completion will work.
*/
int check_operating_dir(const char *currpath, int allow_tabcomp)
{
/* The char *full_operating_dir is global for mem cleanup, and
therefore we only need to get it the first time this function
is called; also, a relative operating directory path will
only be handled properly if this is done */
char *fullpath;
int retval = 0;
const char *whereami1, *whereami2 = NULL;
/* if no operating directory is set, don't bother doing anything */
if (operating_dir == NULL)
return 0;
fullpath = get_full_path(currpath);
if (fullpath == NULL)
return 1;
whereami1 = strstr(fullpath, full_operating_dir);
if (allow_tabcomp)
whereami2 = strstr(full_operating_dir, fullpath);
/* if both searches failed, we're outside the operating directory */
/* otherwise */
/* check the search results; if the full operating directory path is
not at the beginning of the full current path (for normal usage)
and vice versa (for tab completion, if we're allowing it), we're
outside the operating directory */
if (whereami1 != fullpath && whereami2 != full_operating_dir)
retval = 1;
free(fullpath);
/* otherwise, we're still inside it */
return retval;
}
#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 == 1 means we are appending instead of overwriting.
* append == 2 means we are prepending instead of overwriting.
*
* nonamechange means don't change the current filename, it is ignored
* if tmp is nonzero or if we're appending/prepending.
*/
int write_file(const char *name, int tmp, int append, int nonamechange)
{
int retval = -1;
/* Instead of returning in this function, you should always
* merely set retval then goto cleanup_and_exit. */
long size;
int lineswritten = 0;
char *buf = NULL;
const filestruct *fileptr;
FILE *f;
int fd;
int mask = 0, realexists, anyexists;
struct stat st, lst;
char *realname = NULL;
if (name[0] == '\0') {
statusbar(_("Cancelled"));
return -1;
}
if (!tmp)
titlebar(NULL);
fileptr = fileage;
realname = real_dir_from_tilde(name);
#ifndef DISABLE_OPERATINGDIR
/* If we're writing a temporary file, we're probably going outside
the operating directory, so skip the operating directory test. */
if (!tmp && operating_dir != NULL && check_operating_dir(realname, 0)) {
statusbar(_("Can't write outside of %s"), operating_dir);
goto cleanup_and_exit;
}
#endif
/* Save the state of file at the end of the symlink (if there is
one). */
realexists = stat(realname, &st);
#ifndef NANO_SMALL
/* We backup only if the backup toggle is set, the file isn't
temporary, and the file already exists. Furthermore, if we aren't
appending, prepending, or writing a selection, we backup only if
the file has not been modified by someone else since nano opened
it. */
if (ISSET(BACKUP_FILE) && !tmp && realexists == 0 &&
(append != 0 || ISSET(MARK_ISSET) ||
originalfilestat.st_mtime == st.st_mtime)) {
FILE *backup_file;
char *backupname = NULL;
char backupbuf[COPYFILEBLOCKSIZE];
size_t bytesread;
struct utimbuf filetime;
/* save the original file's access and modification times */
filetime.actime = originalfilestat.st_atime;
filetime.modtime = originalfilestat.st_mtime;
/* open the original file to copy to the backup */
f = fopen(realname, "rb");
if (f == NULL) {
statusbar(_("Could not read %s for backup: %s"), realname,
strerror(errno));
return -1;
}
backupname = charalloc(strlen(realname) + 2);
sprintf(backupname, "%s~", realname);
/* get a file descriptor for the destination backup file */
backup_file = fopen(backupname, "wb");
if (backup_file == NULL) {
statusbar(_("Couldn't write backup: %s"), strerror(errno));
free(backupname);
return -1;
}
#ifdef DEBUG
fprintf(stderr, _("Backing up %s to %s\n"), realname, backupname);
#endif
/* copy the file */
while ((bytesread = fread(backupbuf, sizeof(char),
COPYFILEBLOCKSIZE, f)) > 0)
if (fwrite(backupbuf, sizeof(char), bytesread, backup_file) <= 0)
break;
fclose(backup_file);
fclose(f);
if (chmod(backupname, originalfilestat.st_mode) == -1)
statusbar(_("Could not set permissions %o on backup %s: %s"),
originalfilestat.st_mode, backupname,
strerror(errno));
if (chown(backupname, originalfilestat.st_uid,
originalfilestat.st_gid) == -1)
statusbar(_("Could not set owner %d/group %d on backup %s: %s"),
originalfilestat.st_uid, originalfilestat.st_gid,
backupname, strerror(errno));
if (utime(backupname, &filetime) == -1)
statusbar(_("Could not set access/modification time on backup %s: %s"),
backupname, strerror(errno));
free(backupname);
}
#endif
/* Stat the link itself for the check... */
anyexists = lstat(realname, &lst);
/* New case: if the file exists, just give up */
if (tmp && anyexists != -1)
goto cleanup_and_exit;
/* NOTE: If you change this statement, you MUST CHANGE the if
statement below (that says:
if (realexists == -1 || tmp || (ISSET(NOFOLLOW_SYMLINKS) &&
S_ISLNK(lst.st_mode))) {
to reflect whether or not to link/unlink/rename the file */
else if (append != 2 && (!ISSET(NOFOLLOW_SYMLINKS) || !S_ISLNK(lst.st_mode)
|| tmp)) {
/* Use O_EXCL if tmp is nonzero. This is now copied from joe,
because wiggy says so *shrug*. */
if (append != 0)
fd = open(realname, O_WRONLY | O_CREAT | 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);
retval = do_writeout(filename, 1, 0);
} else
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
goto cleanup_and_exit;
}
}
/* Don't follow symlink. Create new file. */
else {
buf = charalloc(strlen(realname) + 8);
strcpy(buf, realname);
strcat(buf, ".XXXXXX");
if ((fd = mkstemp(buf)) == -1) {
if (ISSET(TEMP_OPT)) {
UNSET(TEMP_OPT);
retval = do_writeout(filename, 1, 0);
} else
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
goto cleanup_and_exit;
}
}
#ifdef DEBUG
dump_buffer(fileage);
#endif
f = fdopen(fd, append == 1 ? "ab" : "wb");
if (f == NULL) {
statusbar(_("Could not open file for writing: %s"), strerror(errno));
goto cleanup_and_exit;
}
while (fileptr != NULL && fileptr->next != NULL) {
int data_len;
/* Next line is so we discount the "magic line" */
if (filebot == fileptr && fileptr->data[0] == '\0')
break;
data_len = strlen(fileptr->data);
/* newlines to nulls, just before we write to disk */
sunder(fileptr->data);
size = fwrite(fileptr->data, 1, data_len, f);
/* nulls to newlines; data_len is the string's real length here */
unsunder(fileptr->data, data_len);
if (size < data_len) {
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
fclose(f);
goto cleanup_and_exit;
}
#ifdef DEBUG
else
fprintf(stderr, _("Wrote >%s\n"), fileptr->data);
#endif
#ifndef NANO_SMALL
if (ISSET(DOS_FILE) || ISSET(MAC_FILE))
putc('\r', f);
if (!ISSET(MAC_FILE))
#endif
putc('\n', f);
fileptr = fileptr->next;
lineswritten++;
}
if (fileptr != NULL) {
int data_len = strlen(fileptr->data);
/* newlines to nulls, just before we write to disk */
sunder(fileptr->data);
size = fwrite(fileptr->data, 1, data_len, f);
/* nulls to newlines; data_len is the string's real length here */
unsunder(fileptr->data, data_len);
if (size < data_len) {
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
goto cleanup_and_exit;
} else if (data_len > 0) {
#ifndef NANO_SMALL
if (ISSET(DOS_FILE) || ISSET(MAC_FILE)) {
if (putc('\r', f) == EOF) {
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
fclose(f);
goto cleanup_and_exit;
}
lineswritten++;
}
if (!ISSET(MAC_FILE))
#endif
{
if (putc('\n', f) == EOF) {
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
fclose(f);
goto cleanup_and_exit;
}
lineswritten++;
}
}
}
if (fclose(f) != 0) {
statusbar(_("Could not close %s: %s"), realname, strerror(errno));
unlink(buf);
goto cleanup_and_exit;
}
/* if we're prepending, open the real file, and append it here */
if (append == 2) {
int fd_source, fd_dest;
FILE *f_source, *f_dest;
int prechar;
if ((fd_dest = open(buf, O_WRONLY | O_APPEND, (S_IRUSR | S_IWUSR))) == -1) {
statusbar(_("Could not reopen %s: %s"), buf, strerror(errno));
goto cleanup_and_exit;
}
f_dest = fdopen(fd_dest, "wb");
if (f_dest == NULL) {
statusbar(_("Could not reopen %s: %s"), buf, strerror(errno));
close(fd_dest);
goto cleanup_and_exit;
}
if ((fd_source = open(realname, O_RDONLY | O_CREAT)) == -1) {
statusbar(_("Could not open %s for prepend: %s"), realname, strerror(errno));
fclose(f_dest);
goto cleanup_and_exit;
}
f_source = fdopen(fd_source, "rb");
if (f_source == NULL) {
statusbar(_("Could not open %s for prepend: %s"), realname, strerror(errno));
fclose(f_dest);
close(fd_source);
goto cleanup_and_exit;
}
/* Doing this in blocks is an exercise left to some other reader. */
while ((prechar = getc(f_source)) != EOF) {
if (putc(prechar, f_dest) == EOF) {
statusbar(_("Could not open %s for prepend: %s"), realname, strerror(errno));
fclose(f_source);
fclose(f_dest);
goto cleanup_and_exit;
}
}
if (ferror(f_source)) {
statusbar(_("Could not reopen %s: %s"), buf, strerror(errno));
fclose(f_source);
fclose(f_dest);
goto cleanup_and_exit;
}
fclose(f_source);
fclose(f_dest);
}
if (realexists == -1 || tmp ||
(ISSET(NOFOLLOW_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 = S_IRUSR | S_IWUSR;
else
mask = (S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH |
S_IWOTH) & ~mask;
} else
/* Use permissions from file we are overwriting. */
mask = st.st_mode;
if (append == 2 ||
(!tmp && (ISSET(NOFOLLOW_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);
goto cleanup_and_exit;
}
}
if (link(buf, realname) != -1)
unlink(buf);
else if (errno != EPERM) {
statusbar(_("Could not open %s for writing: %s"),
name, strerror(errno));
unlink(buf);
goto cleanup_and_exit;
} else if (rename(buf, realname) == -1) { /* Try a rename?? */
statusbar(_("Could not open %s for writing: %s"),
realname, strerror(errno));
unlink(buf);
goto cleanup_and_exit;
}
}
if (chmod(realname, mask) == -1)
statusbar(_("Could not set permissions %o on %s: %s"),
mask, realname, strerror(errno));
if (!tmp && append == 0) {
if (!nonamechange) {
filename = mallocstrcpy(filename, realname);
#ifdef ENABLE_COLOR
update_color();
edit_refresh();
#endif
}
#ifndef NANO_SMALL
/* Update originalfilestat to reference the file as it is now. */
stat(filename, &originalfilestat);
#endif
statusbar(P_("Wrote %d line", "Wrote %d lines", lineswritten),
lineswritten);
UNSET(MODIFIED);
titlebar(NULL);
}
retval = 1;
cleanup_and_exit:
free(realname);
free(buf);
return retval;
}
int do_writeout(const char *path, int exiting, int append)
{
int i = 0;
#ifdef NANO_EXTRA
static int did_cred = 0;
#endif
#if !defined(DISABLE_BROWSER) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION))
currshortcut = writefile_list;
#endif
answer = mallocstrcpy(answer, path);
if (exiting && ISSET(TEMP_OPT)) {
if (filename[0] != '\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
const char *formatstr, *backupstr;
if (ISSET(MAC_FILE))
formatstr = _(" [Mac Format]");
else if (ISSET(DOS_FILE))
formatstr = _(" [DOS Format]");
else
formatstr = "";
if (ISSET(BACKUP_FILE))
backupstr = _(" [Backup]");
else
backupstr = "";
/* Be nice to the translation folks */
if (ISSET(MARK_ISSET) && !exiting) {
if (append == 2)
i = statusq(1, writefile_list, "", 0,
"%s%s%s", _("Prepend Selection to File"), formatstr, backupstr);
else if (append == 1)
i = statusq(1, writefile_list, "", 0,
"%s%s%s", _("Append Selection to File"), formatstr, backupstr);
else
i = statusq(1, writefile_list, "", 0,
"%s%s%s", _("Write Selection to File"), formatstr, backupstr);
} else {
if (append == 2)
i = statusq(1, writefile_list, answer, 0,
"%s%s%s", _("File Name to Prepend to"), formatstr, backupstr);
else if (append == 1)
i = statusq(1, writefile_list, answer, 0,
"%s%s%s", _("File Name to Append to"), formatstr, backupstr);
else
i = statusq(1, writefile_list, answer, 0,
"%s%s%s", _("File Name to Write"), formatstr, backupstr);
}
#else
if (append == 2)
i = statusq(1, writefile_list, answer,
"%s", _("File Name to Prepend to"));
else if (append == 1)
i = statusq(1, writefile_list, answer,
"%s", _("File Name to Append to"));
else
i = statusq(1, writefile_list, answer,
"%s", _("File Name to Write"));
#endif /* !NANO_SMALL */
if (i == -1) {
statusbar(_("Cancelled"));
display_main_list();
return 0;
}
#ifndef DISABLE_BROWSER
if (i == NANO_TOFILES_KEY) {
char *tmp = do_browse_from(answer);
currshortcut = writefile_list;
if (tmp == NULL)
continue;
free(answer);
answer = tmp;
} else
#endif /* !DISABLE_BROWSER */
#ifndef NANO_SMALL
if (i == TOGGLE_DOS_KEY) {
UNSET(MAC_FILE);
TOGGLE(DOS_FILE);
continue;
} else if (i == TOGGLE_MAC_KEY) {
UNSET(DOS_FILE);
TOGGLE(MAC_FILE);
continue;
} else if (i == TOGGLE_BACKUP_KEY) {
TOGGLE(BACKUP_FILE);
continue;
} else
#endif /* !NANO_SMALL */
if (i == NANO_PREPEND_KEY) {
append = append == 2 ? 0 : 2;
continue;
} else if (i == NANO_APPEND_KEY) {
append = append == 1 ? 0 : 1;
continue;
}
#ifdef DEBUG
fprintf(stderr, _("filename is %s\n"), 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 == 0 && strcmp(answer, filename) != 0) {
struct stat st;
if (!stat(answer, &st)) {
i = do_yesno(0, 0, _("File exists, OVERWRITE ?"));
if (i == 0 || 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 = ISSET(MODIFIED);
/* write_file() unsets the MODIFIED flag. */
cutbuffer = NULL;
/* Put the marked text in the cutbuffer without changing
the open file. */
cut_marked_segment(current, current_x, mark_beginbuf,
mark_beginx, 0);
fileage = cutbuffer;
filebot = get_cutbottom();
i = write_file(answer, 0, append, 1);
/* Now restore everything */
free_filestruct(cutbuffer);
fileage = fileagebak;
filebot = filebotbak;
cutbuffer = cutback;
if (oldmod)
set_modified();
} else
#endif /* !NANO_SMALL */
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)
add_open_file(1);
#endif
display_main_list();
return i;
} /* while (1) */
}
int do_writeout_void(void)
{
return do_writeout(filename, 0, 0);
}
/* Return a malloc()ed string containing the actual directory, used
* to convert ~user and ~/ notation... */
char *real_dir_from_tilde(const char *buf)
{
char *dirtmp = NULL;
if (buf[0] == '~') {
size_t i;
const struct passwd *userdata;
/* Figure how how much of the str we need to compare */
for (i = 1; buf[i] != '/' && buf[i] != '\0'; i++)
;
/* Determine home directory using getpwent(), don't rely on
$HOME */
if (i == 1)
userdata = getpwuid(geteuid());
else {
do {
userdata = getpwent();
} while (userdata != NULL &&
strncmp(userdata->pw_name, buf + 1, i - 1));
}
endpwent();
if (userdata != NULL) { /* User found */
dirtmp = charalloc(strlen(userdata->pw_dir) + strlen(buf + i) + 1);
sprintf(dirtmp, "%s%s", userdata->pw_dir, &buf[i]);
}
}
if (dirtmp == NULL)
dirtmp = mallocstrcpy(dirtmp, buf);
return dirtmp;
}
#ifndef DISABLE_TABCOMP
/* Tack a slash onto the string we're completing if it's a directory. We
* assume there is room for one more character on the end of buf. The
* return value says whether buf is a directory. */
int append_slash_if_dir(char *buf, int *lastwastab, int *place)
{
char *dirptr = real_dir_from_tilde(buf);
struct stat fileinfo;
int ret = 0;
assert(dirptr != buf);
if (stat(dirptr, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode)) {
strncat(buf, "/", 1);
(*place)++;
/* now we start over again with # of tabs so far */
*lastwastab = 0;
ret = 1;
}
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...
*/
#ifndef DISABLE_OPERATINGDIR
/* ...unless the match exists outside the operating
directory, in which case just go to the next match */
if (operating_dir != NULL) {
if (check_operating_dir(userdata->pw_dir, 1) != 0)
continue;
}
#endif
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 (buf[0] != '\0' && strstr(buf, "/") != NULL) {
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 == NULL) {
/* 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...
*/
#ifndef DISABLE_OPERATINGDIR
/* ...unless the match exists outside the operating
directory, in which case just go to the next match; to
properly do operating directory checking, we have to add the
directory name to the beginning of the proposed match
before we check it */
if (operating_dir != NULL) {
tmp2 = charalloc(strlen(dirname) + strlen(next->d_name) + 2);
strcpy(tmp2, dirname);
strcat(tmp2, "/");
strcat(tmp2, next->d_name);
if (check_operating_dir(tmp2, 1)) {
free(tmp2);
continue;
}
free(tmp2);
}
#endif
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;
}
}
closedir(dir);
free(dirname);
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, int *list)
{
/* 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;
*list = 0;
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. */
/* If the original string begins with a tilde, and the part
we're trying to tab-complete doesn't contain a slash, copy
the part we're tab-completing into buf, so tab completion
will result in buf's containing only the tab-completed
username. */
if (buf[0] == '~' && strchr(tmp, '/') == NULL) {
buf = mallocstrcpy(buf, tmp);
matches = username_tab_completion(tmp, &num_matches);
}
/* If we're in the middle of the original line, copy the string
only up to the cursor position into buf, so tab completion
will result in buf's containing only the tab-completed
path/filename. */
else if (strlen(buf) > strlen(tmp))
buf = mallocstrcpy(buf, tmp);
/* Try to match everything in the current working directory that
* matches. */
if (matches == NULL)
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 (buf[0] != '\0' && strstr(buf, "/") != NULL) {
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 != 0)
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;
/* if an exact match is typed in and Tab is pressed,
*newplace will now be negative; in that case, make it
zero, so that the cursor will stay where it is instead of
moving backward */
if (*newplace < 0)
*newplace = 0;
/* 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 (buf[0] != '\0' && strstr(buf, "/") != NULL) {
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 != NULL && num_matches > 1) {
/* 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 && i + 1 < num_matches) {
editline++;
wmove(edit, editline, 0);
if (editline == editwinrows - 1) {
waddstr(edit, _("(more)"));
break;
}
col = 0;
}
}
free(foo);
wrefresh(edit);
*list = 1;
} else
beep();
}
/* Only refresh the edit window if we don't have a list of filename
matches on it */
if (*list == 0)
edit_refresh();
curs_set(1);
return buf;
}
#endif /* !DISABLE_TABCOMP */
#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 fileinfo;
const char *a = *(char *const *)va, *b = *(char *const *)vb;
int aisdir = stat(a, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
int bisdir = stat(b, &fileinfo) != -1 && S_ISDIR(fileinfo.st_mode);
if (aisdir != 0 && bisdir == 0)
return -1;
if (aisdir == 0 && bisdir != 0)
return 1;
return strcasecmp(a, b);
}
/* Free our malloc()ed memory */
void free_charptrarray(char **array, int len)
{
for (; len > 0; len--)
free(array[len - 1]);
free(array);
}
/* Only print the last part of a path; isn't there a shell
* command for this? */
const char *tail(const char *foo)
{
const char *tmp = foo + strlen(foo);
while (*tmp != '/' && tmp != foo)
tmp--;
if (*tmp == '/')
tmp++;
return tmp;
}
/* Strip one dir from the end of a string. */
void striponedir(char *foo)
{
char *tmp;
assert(foo != NULL);
/* Don't strip the root dir */
if (*foo == '\0' || strcmp(foo, "/") == 0)
return;
tmp = foo + strlen(foo) - 1;
assert(tmp >= foo);
if (*tmp == '/')
*tmp = '\0';
while (*tmp != '/' && tmp != foo)
tmp--;
if (tmp != foo)
*tmp = '\0';
else { /* SPK may need to make a 'default' path here */
if (*tmp != '/')
*tmp = '.';
*(tmp + 1) = '\0';
}
}
int readable_dir(const char *path)
{
DIR *dir = opendir(path);
/* If dir is NULL, don't do closedir(), since that changes errno. */
if (dir != NULL)
closedir(dir);
return dir != NULL;
}
/* Initialize the browser code, including the list of files in *path */
char **browser_init(const char *path, int *longest, int *numents)
{
DIR *dir;
struct dirent *next;
char **filelist;
int i = 0;
size_t path_len;
dir = opendir(path);
if (dir == NULL)
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 *));
if (!strcmp(path, "/"))
path = "";
path_len = strlen(path);
while ((next = readdir(dir)) != NULL) {
if (!strcmp(next->d_name, "."))
continue;
filelist[i] = charalloc(strlen(next->d_name) + path_len + 2);
sprintf(filelist[i], "%s/%s", path, next->d_name);
i++;
}
closedir(dir);
if (*longest > COLS - 1)
*longest = COLS - 1;
return filelist;
}
/* Our browser function. inpath is the path to start browsing from */
char *do_browser(const 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;
#if !defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION)
MEVENT mevent;
#endif
assert(inpath != NULL);
/* 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(NULL, 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);
curs_set(0);
wmove(edit, 0, 0);
i = 0;
width = 0;
filecols = 0;
/* Loop invariant: Microsoft sucks. */
do {
char *new_path;
/* Used by the Go To Directory prompt. */
blank_statusbar_refresh();
#if !defined(DISABLE_HELP) || (!defined(DISABLE_MOUSE) && defined(NCURSES_MOUSE_VERSION))
currshortcut = browser_list;
#endif
editline = 0;
col = 0;
/* Compute line number we're on now, so we don't divide by zero later */
lineno = selected;
if (width != 0)
lineno /= width;
switch (kbinput) {
#if !defined(DISABLE_MOUSE) && defined(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;
/* Longest is the width of each column. There are two
* spaces between each column. */
selected = (lineno / editwinrows) * editwinrows * width
+ mevent.y * width + mevent.x / (longest + 2);
/* If they clicked beyond the end of a row, select the
* end of that row. */
if (mevent.x > width * (longest + 2))
selected--;
/* 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 */
} else /* Must be clicking a shortcut */
do_mouse();
break;
#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 (selected >= (editwinrows + lineno % editwinrows) * width)
selected -= (editwinrows + lineno % editwinrows) * width;
else
selected = 0;
break;
case NANO_NEXTPAGE_KEY:
case NANO_NEXTPAGE_FKEY:
case KEY_NPAGE:
case ' ':
selected += (editwinrows - lineno % editwinrows) * width;
if (selected >= numents)
selected = numents - 1;
break;
case NANO_HELP_KEY:
case NANO_HELP_FKEY:
do_help();
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"));
beep();
break;
}
#ifndef DISABLE_OPERATINGDIR
/*
* Note: the selected file can be outside the operating
* directory if it is .. or if it is a symlink to a directory
* outside the opdir. */
if (check_operating_dir(filelist[selected], FALSE)) {
statusbar(_("Can't go outside of %s in restricted mode"), operating_dir);
beep();
break;
}
#endif
if (stat(filelist[selected], &st) == -1) {
statusbar(_("Can't open \"%s\": %s"), filelist[selected], strerror(errno));
beep();
break;
}
if (!S_ISDIR(st.st_mode)) {
retval = mallocstrcpy(retval, filelist[selected]);
abort = 1;
break;
}
new_path = mallocstrcpy(NULL, filelist[selected]);
if (strcmp("..", tail(new_path)) == 0) {
/* They want to go up a level, so strip off .. and the
current dir */
striponedir(new_path);
/* SPK for '.' path, get the current path via getcwd */
if (strcmp(new_path, ".") == 0) {
free(new_path);
new_path = getcwd(NULL, PATH_MAX + 1);
}
striponedir(new_path);
}
if (!readable_dir(new_path)) {
/* We can't open this dir for some reason. Complain */
statusbar(_("Can't open \"%s\": %s"), new_path, strerror(errno));
free(new_path);
break;
}
free_charptrarray(filelist, numents);
free(foo);
free(path);
path = new_path;
return do_browser(path);
/* Goto a specific directory */
case 'g': /* Pico compatibility */
case 'G':
case NANO_GOTO_KEY:
curs_set(1);
j = statusq(0, gotodir_list, "",
#ifndef NANO_SMALL
0,
#endif
_("Goto Directory"));
bottombars(browser_list);
curs_set(0);
if (j < 0) {
statusbar(_("Goto Cancelled"));
break;
}
new_path = real_dir_from_tilde(answer);
if (new_path[0] != '/') {
new_path = charealloc(new_path, strlen(path) + strlen(answer) + 2);
sprintf(new_path, "%s/%s", path, answer);
}
#ifndef DISABLE_OPERATINGDIR
if (check_operating_dir(new_path, FALSE)) {
statusbar(_("Can't go outside of %s in restricted mode"), operating_dir);
free(new_path);
break;
}
#endif
if (!readable_dir(new_path)) {
/* We can't open this dir for some reason. Complain */
statusbar(_("Can't open \"%s\": %s"), answer, strerror(errno));
free(new_path);
break;
}
/* Start over again with the new path value */
free_charptrarray(filelist, numents);
free(foo);
free(path);
path = new_path;
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 != 0)
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 /* It's more than 1 k and less than a meg */
sprintf(foo + longest - 7, "%4d KB",
(int) st.st_size >> 10);
}
/* Highlight the currently selected file/dir */
if (j == selected)
wattron(edit, A_REVERSE);
waddstr(edit, foo);
if (j == selected)
wattroff(edit, A_REVERSE);
/* 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(const char *inpath)
{
struct stat st;
char *bob;
/* The result of do_browser; the selected file name. */
char *path;
/* inpath, tilde expanded. */
assert(inpath != NULL);
path = real_dir_from_tilde(inpath);
/*
* Perhaps path is a directory. If so, we will pass that to
* do_browser. Otherwise, perhaps path is a directory / a file. So
* we try stripping off the last path element. If it still isn't a
* directory, just use the current directory. */
if (stat(path, &st) == -1 || !S_ISDIR(st.st_mode)) {
striponedir(path);
if (stat(path, &st) == -1 || !S_ISDIR(st.st_mode)) {
free(path);
path = getcwd(NULL, PATH_MAX + 1);
}
}
#ifndef DISABLE_OPERATINGDIR
/* If the resulting path isn't in the operating directory, use that. */
if (check_operating_dir(path, FALSE))
path = mallocstrcpy(path, operating_dir);
#endif
if (!readable_dir(path)) {
beep();
bob = NULL;
} else
bob = do_browser(path);
free(path);
return bob;
}
#endif /* !DISABLE_BROWSER */
#ifndef NANO_SMALL
#ifdef ENABLE_NANORC
void load_history(void)
{
FILE *hist;
const struct passwd *userage = NULL;
static char *nanohist;
char *buf, *ptr;
char *homenv = getenv("HOME");
historyheadtype *history = &search_history;
if (homenv != NULL) {
nanohist = nrealloc(nanohist, strlen(homenv) + 15);
sprintf(nanohist, "%s/.nano_history", homenv);
} else {
userage = getpwuid(geteuid());
endpwent();
nanohist = nrealloc(nanohist, strlen(userage->pw_dir) + 15);
sprintf(nanohist, "%s/.nano_history", userage->pw_dir);
}
/* assume do_rcfile has reported missing home dir */
if (homenv != NULL || userage != NULL) {
hist = fopen(nanohist, "r");
if (!hist) {
if (errno != ENOENT)
rcfile_error(_("Unable to open ~/.nano_history file, %s"), strerror(errno));
free(nanohist);
} else {
buf = charalloc(1024);
while (fgets(buf, 1023, hist) != 0) {
ptr = buf;
while (*ptr != '\n' && *ptr != '\0' && ptr < buf + 1023)
ptr++;
*ptr = '\0';
if (strlen(buf))
update_history(history, buf);
else
history = &replace_history;
}
fclose(hist);
free(buf);
free(nanohist);
UNSET(HISTORY_CHANGED);
}
}
}
/* save histories to ~/.nano_history */
void save_history(void)
{
FILE *hist;
const struct passwd *userage = NULL;
char *nanohist = NULL;
char *homenv = getenv("HOME");
historytype *h;
/* don't save unchanged or empty histories */
if (!((search_history.count || replace_history.count) &&
ISSET(HISTORY_CHANGED) && !ISSET(VIEW_MODE)))
return;
if (homenv != NULL) {
nanohist = nrealloc(nanohist, strlen(homenv) + 15);
sprintf(nanohist, "%s/.nano_history", homenv);
} else {
userage = getpwuid(geteuid());
endpwent();
nanohist = nrealloc(nanohist, strlen(userage->pw_dir) + 15);
sprintf(nanohist, "%s/.nano_history", userage->pw_dir);
}
if (homenv != NULL || userage != NULL) {
hist = fopen(nanohist, "wb");
if (!hist) {
rcfile_msg(_("Unable to write ~/.nano_history file, %s"), strerror(errno));
} else {
/* set rw only by owner for security ?? */
chmod(nanohist, S_IRUSR | S_IWUSR);
/* write oldest first */
for (h = search_history.tail ; h->prev ; h = h->prev) {
h->data = nrealloc(h->data, strlen(h->data) + 2);
strcat(h->data, "\n");
if (fputs(h->data, hist) == EOF) {
rcfile_msg(_("Unable to write ~/.nano_history file, %s"), strerror(errno));
goto come_from;
}
}
if (fputs("\n", hist) == EOF) {
rcfile_msg(_("Unable to write ~/.nano_history file, %s"), strerror(errno));
goto come_from;
}
for (h = replace_history.tail ; h->prev ; h = h->prev) {
h->data = nrealloc(h->data, strlen(h->data) + 2);
strcat(h->data, "\n");
if (fputs(h->data, hist) == EOF) {
rcfile_msg(_("Unable to write ~/.nano_history file, %s"), strerror(errno));
goto come_from;
}
}
come_from:
fclose(hist);
}
free(nanohist);
}
}
#endif /* ENABLE_NANORC */
#endif /* !NANO_SMALL */
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