497 lines
12 KiB
C
497 lines
12 KiB
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 <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 "config.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;
|
|
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 = nmalloc(1);
|
|
strcpy(fileage->data, "");
|
|
fileage->prev = NULL;
|
|
fileage->next = NULL;
|
|
fileage->lineno = 1;
|
|
filebot = fileage;
|
|
edittop = fileage;
|
|
editbot = fileage;
|
|
current = fileage;
|
|
totlines = 1;
|
|
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 = nmalloc(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 = nmalloc(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) {
|
|
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();
|
|
|
|
/* 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);
|
|
return -1;
|
|
} else { /* File is A-OK */
|
|
if (S_ISDIR(fileinfo.st_mode)) {
|
|
statusbar(_("File \"%s\" is a directory"), filename);
|
|
if (!insert)
|
|
new_file();
|
|
return -1;
|
|
}
|
|
if (!quiet)
|
|
statusbar(_("Reading File"));
|
|
read_file(fd, filename);
|
|
}
|
|
|
|
return 1;
|
|
}
|
|
|
|
int do_insertfile(void)
|
|
{
|
|
int i;
|
|
|
|
wrap_reset();
|
|
i = statusq(writefile_list, WRITEFILE_LIST_LEN, "",
|
|
_("File to insert [from ./] "));
|
|
if (i != -1) {
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, "filename is %s", answer);
|
|
#endif
|
|
|
|
i = open_file(answer, 1, 0);
|
|
|
|
dump_buffer(fileage);
|
|
set_modified();
|
|
|
|
/* Here we want to rebuild the edit window */
|
|
fix_editbot();
|
|
|
|
/* 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;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* Write a file out. If tmp is nonzero, we set the umask to 0600,
|
|
* we don't set the global variable filename to it's name, and don't
|
|
* print out how many lines we wrote on the statusbar.
|
|
*
|
|
* Note that tmp is only set to 1 for storing temporary files internal
|
|
* to the editor, and is completely different from TEMP_OPT.
|
|
*/
|
|
int write_file(char *name, int tmp)
|
|
{
|
|
long size, lineswritten = 0;
|
|
char buf[PATH_MAX + 1];
|
|
filestruct *fileptr;
|
|
int fd, mask = 0;
|
|
struct stat st;
|
|
|
|
if (!strcmp(name, "")) {
|
|
statusbar(_("Cancelled"));
|
|
return -1;
|
|
}
|
|
titlebar();
|
|
fileptr = fileage;
|
|
|
|
|
|
/* Check to see if the file is a regular file and FOLLOW_SYMLINKS is
|
|
set. If so then don't do the delete and recreate code which would
|
|
cause unexpected behavior */
|
|
lstat(name, &st);
|
|
|
|
/* Open the file and truncate it. Trust the symlink. */
|
|
if ((ISSET(FOLLOW_SYMLINKS) || !S_ISLNK(st.st_mode)) && !tmp) {
|
|
|
|
if ((fd = open(name, O_WRONLY | O_CREAT | O_TRUNC,
|
|
S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH |
|
|
S_IWOTH)) == -1) {
|
|
if (ISSET(TEMP_OPT)) {
|
|
UNSET(TEMP_OPT);
|
|
return do_writeout(1);
|
|
}
|
|
statusbar(_("Could not open file for writing: %s"),
|
|
strerror(errno));
|
|
return -1;
|
|
}
|
|
}
|
|
/* Don't follow symlink. Create new file. */
|
|
else {
|
|
if (strlen(name) > (PATH_MAX - 7)) {
|
|
statusbar(_("Could not open file: Path length exceeded."));
|
|
return -1;
|
|
}
|
|
|
|
memset(buf, 0x00, PATH_MAX + 1);
|
|
strcat(buf, name);
|
|
strcat(buf, ".XXXXXX");
|
|
if ((fd = mkstemp(buf)) == -1) {
|
|
if (ISSET(TEMP_OPT)) {
|
|
UNSET(TEMP_OPT);
|
|
return do_writeout(1);
|
|
}
|
|
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);
|
|
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"), name, strerror(errno));
|
|
unlink(buf);
|
|
return -1;
|
|
}
|
|
|
|
if (!ISSET(FOLLOW_SYMLINKS) || tmp) {
|
|
if (stat(name, &st) == -1) {
|
|
/* Use default umask as file permisions 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 (unlink(name) == -1) {
|
|
if (errno != ENOENT) {
|
|
statusbar(_("Could not open %s for writing: %s"),
|
|
name, strerror(errno));
|
|
unlink(buf);
|
|
return -1;
|
|
}
|
|
}
|
|
}
|
|
|
|
if (link(buf, name) != -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, name) == -1) { /* Try a rename?? */
|
|
statusbar(_("Could not open %s for writing: %s"),
|
|
name, strerror(errno));
|
|
unlink(buf);
|
|
return -1;
|
|
}
|
|
if (chmod(name, mask) == -1) {
|
|
statusbar(_("Could not set permissions %o on %s: %s"),
|
|
mask, name, strerror(errno));
|
|
}
|
|
|
|
}
|
|
if (!tmp) {
|
|
strncpy(filename, name, 132);
|
|
statusbar(_("Wrote %d lines"), lineswritten);
|
|
}
|
|
UNSET(MODIFIED);
|
|
titlebar();
|
|
return 1;
|
|
}
|
|
|
|
int do_writeout(int exiting)
|
|
{
|
|
int i = 0;
|
|
|
|
strncpy(answer, filename, 132);
|
|
|
|
if ((exiting) && (ISSET(TEMP_OPT))) {
|
|
if (filename[0]) {
|
|
i = write_file(answer, 0);
|
|
display_main_list();
|
|
return i;
|
|
} else {
|
|
UNSET(TEMP_OPT);
|
|
do_exit();
|
|
|
|
/* They cancelled, abort quit */
|
|
return -1;
|
|
}
|
|
}
|
|
|
|
while (1) {
|
|
i = statusq(writefile_list, WRITEFILE_LIST_LEN, answer,
|
|
_("File Name to write"));
|
|
|
|
if (i != -1) {
|
|
|
|
#ifdef DEBUG
|
|
fprintf(stderr, _("filename is %s"), answer);
|
|
#endif
|
|
if (strncmp(answer, filename, 132)) {
|
|
struct stat st;
|
|
if (!stat(answer, &st)) {
|
|
i = do_yesno(0, 0, _("File exists, OVERWRITE ?"));
|
|
|
|
if (!i || (i == -1))
|
|
continue;
|
|
}
|
|
}
|
|
i = write_file(answer, 0);
|
|
|
|
display_main_list();
|
|
return i;
|
|
} else {
|
|
statusbar(_("Cancelled"));
|
|
display_main_list();
|
|
return 0;
|
|
}
|
|
}
|
|
}
|
|
|
|
int do_writeout_void(void)
|
|
{
|
|
return do_writeout(0);
|
|
}
|