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smol/files.c

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/* $Id$ */
/**************************************************************************
* 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 <ctype.h>
#include <dirent.h>
#include <pwd.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 || 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(void)
{
int i;
char *realname = NULL;
wrap_reset();
i = statusq(1, writefile_list, WRITEFILE_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);
#ifdef DISABLE_TABCOMP
realname = NULL;
#endif
if (tmp != NULL)
realname = mallocstrcpy(realname, tmp);
else
return do_insertfile();
}
#endif
i = open_file(realname, 1, 0);
free(realname);
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.
*
* 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.
*/
int write_file(char *name, int tmp)
{
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 (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);
}
statusbar(_("Could not open file for writing: %s"),
strerror(errno));
return -1;
}
}
/* Don't follow symlink. Create new file. */
else {
buf = nmalloc(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);
}
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"), realname, strerror(errno));
unlink(buf);
return -1;
}
if (realexists == -1 || tmp ||
(!ISSET(FOLLOW_SYMLINKS) && S_ISLNK(lst.st_mode))) {
/* 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 (!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) {
filename = mallocstrcpy(filename, realname);
statusbar(_("Wrote %d lines"), lineswritten);
UNSET(MODIFIED);
titlebar(NULL);
}
return 1;
}
int do_writeout(char *path, int exiting)
{
int i = 0;
#ifdef NANO_EXTRA
static int did_cred = 0;
#endif
answer = mallocstrcpy(answer, path);
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(1, writefile_list, WRITEFILE_LIST_LEN, answer,
_("File Name to write"));
if (i != -1) {
#ifndef DISABLE_BROWSER
if (i == NANO_TOFILES_KEY) {
char *tmp = do_browse_from(answer);
if (tmp != NULL)
answer = mallocstrcpy(answer, tmp);
else
return do_writeout(answer, exiting);
}
#endif
#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 (strcmp(answer, filename)) {
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(filename, 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 = nmalloc(strlen(buf) + 2 + strlen(getenv("HOME")));
sprintf(dirtmp, "%s%s", getenv("HOME"), &buf[1]);
}
}
else {
/* Figure how how much of 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 = nmalloc(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 = nmalloc(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 = nmalloc(strlen(buf) + 1);
tmp = buf + strlen(buf);
while (*tmp != '/' && tmp != buf)
tmp--;
tmp++;
strncpy(dirName, buf, tmp - buf + 1);
dirName[tmp - buf] = 0;
} else {
if ((dirName = getcwd(NULL, 0)) == NULL)
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 = nmalloc(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 = nmalloc(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 answer = 0;
if ((stat(a, &file1info) != -1) && (stat(b, &file2info) != -1)) {
/* If is a is a dir and b isn't, return -1.
Else if b is a dir and a isn't, return 0.
Else return a < b */
if (S_ISDIR(file1info.st_mode) && !S_ISDIR(file2info.st_mode))
return -1;
else if (!S_ISDIR(file1info.st_mode) && S_ISDIR(file2info.st_mode))
return 1;
else
answer = strcmp(a, b);
}
return(answer);
}
/* 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] = nmalloc(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 malloced 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;
/* 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 = nmalloc(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 {
blank_edit();
blank_statusbar();
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) {
case KEY_UP:
case 'u':
if (selected - width >= 0)
selected -= width;
break;
case KEY_LEFT:
case 'l':
if (selected > 0)
selected--;
break;
case KEY_DOWN:
case 'd':
if (selected + width <= numents - 1)
selected += width;
break;
case KEY_RIGHT:
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_CONTROL_M:
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"));
else
path = mallocstrcpy(path, filelist[selected]);
st = filestat(path);
if (S_ISDIR(st.st_mode)) {
if (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;
}
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;
/* Stuff we want to abort the browser */
case 'q':
case 'Q':
case 'e': /* Pico compatibility, yeech */
case 'E':
case NANO_EXIT_FKEY:
abort = 1;
break;
}
if (abort)
break;
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 < 1024) /* less than 1 K */
sprintf(foo + longest - 7, "%4d B", (int) st.st_size);
else if (st.st_size > 1073741824) /* at least 1 gig */
sprintf(foo + longest - 7, "%4d GB", (int) st.st_size / 1073741824);
else if (st.st_size > 1048576) /* at least 1 meg */
sprintf(foo + longest - 7, "%4d MB", (int) st.st_size / 1048576);
else /* Its more than 1 k and less than a meg */
sprintf(foo + longest - 7, "%4d KB", (int) st.st_size / 1024);
}
/* Hilight the currently selected file/dir */
if (j == selected)
wattron(edit, A_REVERSE);
waddnstr(edit, foo, strlen(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 fron't 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 was well start from . */
if (tmp == NULL || !strstr(tmp, "/"))
return do_browser(getcwd(NULL, 0));
/* 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
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