/* See LICENSE file for copyright and license details. */
/*
* Visual layout:
* .---------
* | cwd: /mnt/path
* |
* | file0
* | file1
* | > file2
* | file3
* | file4
* ...
* | filen
* |
* | Permission denied
* '------
*/
#ifdef __linux__
#include <sys/inotify.h>
#define LINUX_INOTIFY
#endif
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/statvfs.h>
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
# include <sys/types.h>
#include <sys/event.h>
#include <sys/time.h>
#define BSD_KQUEUE
#else
# include <sys/sysmacros.h>
#endif
#include <sys/wait.h>
#include <ctype.h>
#ifdef __linux__ /* Fix failure due to mvaddnwstr() */
#ifndef NCURSES_WIDECHAR
#define NCURSES_WIDECHAR 1
#endif
#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__)
#ifndef _XOPEN_SOURCE_EXTENDED
#define _XOPEN_SOURCE_EXTENDED
#endif
#endif
#ifndef __USE_XOPEN /* Fix failure due to wcswidth(), ncursesw/curses.h includes whcar.h on Ubuntu 14.04 */
#define __USE_XOPEN
#endif
#include <curses.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <libgen.h>
#include <limits.h>
#ifdef __gnu_hurd__
#define PATH_MAX 4096
#endif
#include <locale.h>
#include <pwd.h>
#include <regex.h>
#include <signal.h>
#include <stdarg.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include <readline/history.h>
#include <readline/readline.h>
#ifndef __USE_XOPEN_EXTENDED
#define __USE_XOPEN_EXTENDED 1
#endif
#include <ftw.h>
#include <wchar.h>
#include "config.h"
#ifdef DEBUGMODE
static int DEBUG_FD;
static int
xprintf(int fd, const char *fmt, ...)
{
char buf[BUFSIZ];
int r;
va_list ap;
va_start(ap, fmt);
r = vsnprintf(buf, sizeof(buf), fmt, ap);
if (r > 0)
r = write(fd, buf, r);
va_end(ap);
return r;
}
static int
enabledbg()
{
FILE *fp = fopen("/tmp/nnn_debug", "w");
if (!fp) {
fprintf(stderr, "Cannot open debug file\n");
return -1;
}
DEBUG_FD = fileno(fp);
if (DEBUG_FD == -1) {
fprintf(stderr, "Cannot open debug file descriptor\n");
return -1;
}
return 0;
}
static void
disabledbg()
{
close(DEBUG_FD);
}
#define DPRINTF_D(x) xprintf(DEBUG_FD, #x "=%d\n", x)
#define DPRINTF_U(x) xprintf(DEBUG_FD, #x "=%u\n", x)
#define DPRINTF_S(x) xprintf(DEBUG_FD, #x "=%s\n", x)
#define DPRINTF_P(x) xprintf(DEBUG_FD, #x "=0x%p\n", x)
#else
#define DPRINTF_D(x)
#define DPRINTF_U(x)
#define DPRINTF_S(x)
#define DPRINTF_P(x)
#endif /* DEBUGMODE */
/* Macro definitions */
#define VERSION "1.3"
#define LEN(x) (sizeof(x) / sizeof(*(x)))
#undef MIN
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#define ISODD(x) ((x) & 1)
#define TOUPPER(ch) \
(((ch) >= 'a' && (ch) <= 'z') ? ((ch) - 'a' + 'A') : (ch))
#define MAX_CMD_LEN 5120
#define CWD "cwd: "
#define CURSR " > "
#define EMPTY " "
#define CURSYM(flag) (flag ? CURSR : EMPTY)
#define FILTER '/'
#define REGEX_MAX 128
#define BM_MAX 10
/* Macros to define process spawn behaviour as flags */
#define F_NONE 0x00 /* no flag set */
#define F_MARKER 0x01 /* draw marker to indicate nnn spawned (e.g. shell) */
#define F_NOWAIT 0x02 /* don't wait for child process (e.g. file manager) */
#define F_NOTRACE 0x04 /* suppress stdout and strerr (no traces) */
#define F_SIGINT 0x08 /* restore default SIGINT handler */
#define F_NORMAL 0x80 /* spawn child process in non-curses regular mode */
#define exitcurses() endwin()
#define clearprompt() printmsg("")
#define printwarn() printmsg(strerror(errno))
#define istopdir(path) (path[1] == '\0' && path[0] == '/')
#define settimeout() timeout(1000)
#define cleartimeout() timeout(-1)
#define errexit() printerr(__LINE__)
#ifdef LINUX_INOTIFY
#define EVENT_SIZE (sizeof(struct inotify_event))
#define EVENT_BUF_LEN (1024 * (EVENT_SIZE + 16))
#elif defined(BSD_KQUEUE)
#define NUM_EVENT_SLOTS 1
#define NUM_EVENT_FDS 1
#endif
/* TYPE DEFINITIONS */
typedef unsigned long ulong;
typedef unsigned int uint;
typedef unsigned char uchar;
/* STRUCTURES */
/* Directory entry */
typedef struct entry {
char name[NAME_MAX];
mode_t mode;
time_t t;
off_t size;
blkcnt_t blocks; /* number of 512B blocks allocated */
} *pEntry;
/* Bookmark */
typedef struct {
char *key;
char *loc;
} bm;
/* Settings */
typedef struct {
uchar filtermode : 1; /* Set to enter filter mode */
uchar mtimeorder : 1; /* Set to sort by time modified */
uchar sizeorder : 1; /* Set to sort by file size */
uchar blkorder : 1; /* Set to sort by blocks used (disk usage) */
uchar showhidden : 1; /* Set to show hidden files */
uchar showdetail : 1; /* Clear to show fewer file info */
uchar showcolor : 1; /* Set to show dirs in blue */
uchar dircolor : 1; /* Current status of dir color */
} settings;
/* GLOBALS */
/* Configuration */
static settings cfg = {0, 0, 0, 0, 0, 1, 1, 0};
static struct entry *dents;
static int ndents, cur, total_dents;
static uint idle;
static uint idletimeout;
static char *player;
static char *copier;
static char *editor;
static char *desktop_manager;
static char *metaviewer;
static blkcnt_t ent_blocks;
static blkcnt_t dir_blocks;
static ulong num_files;
static uint open_max;
static bm bookmark[BM_MAX];
static uchar color = 4;
#ifdef LINUX_INOTIFY
static int inotify_fd, inotify_wd = -1;
static uint INOTIFY_MASK = IN_ATTRIB | IN_CREATE | IN_DELETE | IN_DELETE_SELF | IN_MODIFY | IN_MOVE_SELF | IN_MOVED_FROM | IN_MOVED_TO;
#elif defined(BSD_KQUEUE)
static int kq, event_fd = -1;
static struct kevent events_to_monitor[NUM_EVENT_FDS];
static uint KQUEUE_FFLAGS = NOTE_DELETE | NOTE_EXTEND | NOTE_LINK | NOTE_RENAME | NOTE_REVOKE | NOTE_WRITE;
static struct timespec gtimeout;
#endif
/* Utilities to open files, run actions */
static char * const utils[] = {
#ifdef __APPLE__
"/usr/bin/open",
#else
"/usr/bin/xdg-open",
#endif
"nlay",
"mediainfo",
"exiftool"
};
/* Common message strings */
static char *STR_NFTWFAIL = "nftw(3) failed";
static char *STR_ATROOT = "You are at /";
static char *STR_NOHOME = "HOME not set";
/* For use in functions which are isolated and don't return the buffer */
static char g_buf[MAX_CMD_LEN];
/* Forward declarations */
static void redraw(char *path);
/* Functions */
/* Messages show up at the bottom */
static void
printmsg(char *msg)
{
mvprintw(LINES - 1, 0, "%s\n", msg);
}
/* Kill curses and display error before exiting */
static void
printerr(int linenum)
{
exitcurses();
fprintf(stderr, "line %d: (%d) %s\n", linenum, errno, strerror(errno));
exit(1);
}
/* Print prompt on the last line */
static void
printprompt(char *str)
{
clearprompt();
printw(str);
}
/* Increase the limit on open file descriptors, if possible */
static rlim_t
max_openfds()
{
struct rlimit rl;
rlim_t limit = getrlimit(RLIMIT_NOFILE, &rl);
if (limit != 0)
return 32;
limit = rl.rlim_cur;
rl.rlim_cur = rl.rlim_max;
/* Return ~75% of max possible */
if (setrlimit(RLIMIT_NOFILE, &rl) == 0) {
limit = rl.rlim_max - (rl.rlim_max >> 2);
/*
* 20K is arbitrary> If the limit is set to max possible
* value, the memory usage increases to more than double.
*/
return limit > 20480 ? 20480 : limit;
}
return limit;
}
/*
* Custom xstrlen()
*/
static size_t
xstrlen(const char *s)
{
static size_t len;
if (!s)
return 0;
len = 0;
while (*s)
++len, ++s;
return len;
}
/*
* Just a safe strncpy(3)
* Always null ('\0') terminates if both src and dest are valid pointers.
* Returns the number of bytes copied including terminating null byte.
*/
static size_t
xstrlcpy(char *dest, const char *src, size_t n)
{
static size_t len, blocks;
static const uint _WSHIFT = (sizeof(ulong) == 8) ? 3 : 2;
if (!src || !dest)
return 0;
len = xstrlen(src) + 1;
if (n > len)
n = len;
else if (len > n)
/* Save total number of bytes to copy in len */
len = n;
blocks = n >> _WSHIFT;
n -= (blocks << _WSHIFT);
if (blocks) {
static ulong *s, *d;
s = (ulong *)src;
d = (ulong *)dest;
while (blocks) {
*d = *s;
++d, ++s;
--blocks;
}
if (!n) {
dest = (char *)d;
*--dest = '\0';
return len;
}
src = (char *)s;
dest = (char *)d;
}
while (--n && (*dest = *src))
++dest, ++src;
if (!n)
*dest = '\0';
return len;
}
/*
* Custom strcmp(), just what we need.
* Returns 0 if same, else -1
*/
static int
xstrcmp(const char *s1, const char *s2)
{
if (!s1 || !s2)
return -1;
while (*s1 && *s1 == *s2)
++s1, ++s2;
if (*s1 != *s2)
return -1;
return 0;
}
/*
* The poor man's implementation of memrchr(3).
* We are only looking for '/' in this program.
* Ideally 0 < n <= strlen(s).
*/
static void *
xmemrchr(uchar *s, uchar ch, size_t n)
{
if (!s || !n)
return NULL;
s = s + n - 1;
while (n) {
if (*s == ch)
return s;
--n, --s;
}
return NULL;
}
/*
* The following dirname(3) implementation does not
* modify the input. We use a copy of the original.
*
* Modified from the glibc (GNU LGPL) version.
*/
static char *
xdirname(const char *path)
{
static char *buf = g_buf;
static char *last_slash;
xstrlcpy(buf, path, PATH_MAX);
/* Find last '/'. */
last_slash = xmemrchr((uchar *)buf, '/', xstrlen(buf));
if (last_slash != NULL && last_slash != buf && last_slash[1] == '\0') {
/* Determine whether all remaining characters are slashes. */
char *runp;
for (runp = last_slash; runp != buf; --runp)
if (runp[-1] != '/')
break;
/* The '/' is the last character, we have to look further. */
if (runp != buf)
last_slash = xmemrchr((uchar *)buf, '/', runp - buf);
}
if (last_slash != NULL) {
/* Determine whether all remaining characters are slashes. */
char *runp;
for (runp = last_slash; runp != buf; --runp)
if (runp[-1] != '/')
break;
/* Terminate the buffer. */
if (runp == buf) {
/* The last slash is the first character in the string.
* We have to return "/". As a special case we have to
* return "//" if there are exactly two slashes at the
* beginning of the string. See XBD 4.10 Path Name
* Resolution for more information.
*/
if (last_slash == buf + 1)
++last_slash;
else
last_slash = buf + 1;
} else
last_slash = runp;
last_slash[0] = '\0';
} else {
/* This assignment is ill-designed but the XPG specs require to
* return a string containing "." in any case no directory part
* is found and so a static and constant string is required.
*/
buf[0] = '.';
buf[1] = '\0';
}
return buf;
}
/*
* Return number of dots if all chars in a string are dots, else 0
*/
static int
all_dots(const char *path)
{
if (!path)
return FALSE;
int count = 0;
while (*path == '.')
++count, ++path;
if (*path)
return 0;
return count;
}
/* Initialize curses mode */
static void
initcurses(void)
{
if (initscr() == NULL) {
char *term = getenv("TERM");
if (term != NULL)
fprintf(stderr, "error opening TERM: %s\n", term);
else
fprintf(stderr, "initscr() failed\n");
exit(1);
}
cbreak();
noecho();
nonl();
intrflush(stdscr, FALSE);
keypad(stdscr, TRUE);
curs_set(FALSE); /* Hide cursor */
start_color();
use_default_colors();
if (cfg.showcolor)
init_pair(1, color, -1);
settimeout(); /* One second */
}
/*
* Spawns a child process. Behaviour can be controlled using flag.
* Limited to 2 arguments to a program, flag works on bit set.
*/
static void
spawn(char *file, char *arg1, char *arg2, char *dir, uchar flag)
{
pid_t pid;
int status;
if (flag & F_NORMAL)
exitcurses();
pid = fork();
if (pid == 0) {
if (dir != NULL)
status = chdir(dir);
/* Show a marker (to indicate nnn spawned shell) */
if (flag & F_MARKER) {
printf("\n +-++-++-+\n | n n n |\n +-++-++-+\n\n");
printf("Spawned shell level: %d\n", atoi(getenv("SHLVL")) + 1);
}
/* Suppress stdout and stderr */
if (flag & F_NOTRACE) {
int fd = open("/dev/null", O_WRONLY, 0200);
dup2(fd, 1);
dup2(fd, 2);
close(fd);
}
if (flag & F_SIGINT)
signal(SIGINT, SIG_DFL);
execlp(file, file, arg1, arg2, NULL);
_exit(1);
} else {
if (!(flag & F_NOWAIT))
/* Ignore interruptions */
while (waitpid(pid, &status, 0) == -1)
DPRINTF_D(status);
DPRINTF_D(pid);
if (flag & F_NORMAL)
initcurses();
}
}
/* Get program name from env var, else return fallback program */
static char *
xgetenv(char *name, char *fallback)
{
if (name == NULL)
return fallback;
char *value = getenv(name);
return value && value[0] ? value : fallback;
}
/* Check if a dir exists, IS a dir and is readable */
static bool
xdiraccess(char *path)
{
static DIR *dirp;
dirp = opendir(path);
if (dirp == NULL) {
printwarn();
return FALSE;
}
closedir(dirp);
return TRUE;
}
/*
* We assume none of the strings are NULL.
*
* Let's have the logic to sort numeric names in numeric order.
* E.g., the order '1, 10, 2' doesn't make sense to human eyes.
*
* If the absolute numeric values are same, we fallback to alphasort.
*/
static int
xstricmp(char *s1, char *s2)
{
static char *c1, *c2;
c1 = s1;
while (isspace(*c1))
++c1;
if (*c1 == '-' || *c1 == '+')
++c1;
while (*c1 >= '0' && *c1 <= '9')
++c1;
c2 = s2;
while (isspace(*c2))
++c2;
if (*c2 == '-' || *c2 == '+')
++c2;
while (*c2 >= '0' && *c2 <= '9')
++c2;
if (*c1 == '\0' && *c2 == '\0') {
static long long num1, num2;
num1 = strtoll(s1, &c1, 10);
num2 = strtoll(s2, &c2, 10);
if (num1 != num2) {
if (num1 > num2)
return 1;
else
return -1;
}
} else if (*c1 == '\0' && *c2 != '\0')
return -1;
else if (*c1 != '\0' && *c2 == '\0')
return 1;
while (*s2 && *s1 && TOUPPER(*s1) == TOUPPER(*s2))
++s1, ++s2;
/* In case of alphabetically same names, make sure
* lower case one comes before upper case one
*/
if (!*s1 && !*s2)
return 1;
return (int) (TOUPPER(*s1) - TOUPPER(*s2));
}
/* Return the integer value of a char representing HEX */
static char
xchartohex(char c)
{
if (c >= '0' && c <= '9')
return c - '0';
c = TOUPPER(c);
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return c;
}
/* Trim all whitespace from both ends, / from end */
static char *
strstrip(char *s)
{
if (!s || !*s)
return s;
size_t len = xstrlen(s) - 1;
while (len != 0 && (isspace(s[len]) || s[len] == '/'))
--len;
s[len + 1] = '\0';
while (*s && isspace(*s))
++s;
return s;
}
static char *
getmime(char *file)
{
regex_t regex;
uint i;
static uint len = LEN(assocs);
for (i = 0; i < len; ++i) {
if (regcomp(®ex, assocs[i].regex, REG_NOSUB | REG_EXTENDED | REG_ICASE) != 0)
continue;
if (regexec(®ex, file, 0, NULL, 0) == 0)
return assocs[i].mime;
}
return NULL;
}
static int
setfilter(regex_t *regex, char *filter)
{
static size_t len;
static int r;
r = regcomp(regex, filter, REG_NOSUB | REG_EXTENDED | REG_ICASE);
if (r != 0 && filter && filter[0] != '\0') {
len = COLS;
if (len > LINE_MAX)
len = LINE_MAX;
regerror(r, regex, g_buf, len);
printmsg(g_buf);
}
return r;
}
static void
initfilter(int dot, char **ifilter)
{
*ifilter = dot ? "." : "^[^.]";
}
static int
visible(regex_t *regex, char *file)
{
return regexec(regex, file, 0, NULL, 0) == 0;
}
static int
entrycmp(const void *va, const void *vb)
{
static pEntry pa, pb;
pa = (pEntry)va;
pb = (pEntry)vb;
/* Sort directories first */
if (S_ISDIR(pb->mode) && !S_ISDIR(pa->mode))
return 1;
else if (S_ISDIR(pa->mode) && !S_ISDIR(pb->mode))
return -1;
/* Do the actual sorting */
if (cfg.mtimeorder)
return pb->t - pa->t;
if (cfg.sizeorder) {
if (pb->size > pa->size)
return 1;
else if (pb->size < pa->size)
return -1;
}
if (cfg.blkorder) {
if (pb->blocks > pa->blocks)
return 1;
else if (pb->blocks < pa->blocks)
return -1;
}
return xstricmp(pa->name, pb->name);
}
/*
* Returns SEL_* if key is bound and 0 otherwise.
* Also modifies the run and env pointers (used on SEL_{RUN,RUNARG}).
* The next keyboard input can be simulated by presel.
*/
static int
nextsel(char **run, char **env, int *presel)
{
static int c;
static uchar i;
static uint len = LEN(bindings);
#ifdef LINUX_INOTIFY
static char inotify_buf[EVENT_BUF_LEN];
#elif defined(BSD_KQUEUE)
static struct kevent event_data[NUM_EVENT_SLOTS];
#endif
c = *presel;
if (c == 0)
c = getch();
else {
*presel = 0;
/* Unwatch dir if we are still in a filtered view */
#ifdef LINUX_INOTIFY
if (inotify_wd >= 0) {
inotify_rm_watch(inotify_fd, inotify_wd);
inotify_wd = -1;
}
#elif defined(BSD_KQUEUE)
if (event_fd >= 0) {
close(event_fd);
event_fd = -1;
}
#endif
}
if (c == -1) {
++idle;
/* Do not check for directory changes in du
* mode. A redraw forces du calculation.
* Check for changes every odd second.
*/
#ifdef LINUX_INOTIFY
if (!cfg.blkorder && inotify_wd >= 0 && idle & 1 && read(inotify_fd, inotify_buf, EVENT_BUF_LEN) > 0)
#elif defined(BSD_KQUEUE)
if (!cfg.blkorder && event_fd >= 0 && idle & 1
&& kevent(kq, events_to_monitor, NUM_EVENT_SLOTS, event_data, NUM_EVENT_FDS, >imeout) > 0)
#endif
c = CONTROL('L');
} else
idle = 0;
for (i = 0; i < len; ++i)
if (c == bindings[i].sym) {
*run = bindings[i].run;
*env = bindings[i].env;
return bindings[i].act;
}
return 0;
}
/*
* Move non-matching entries to the end
*/
static void
fill(struct entry **dents, int (*filter)(regex_t *, char *), regex_t *re)
{
static int count;
for (count = 0; count < ndents; ++count) {
if (filter(re, (*dents)[count].name) == 0) {
if (count != --ndents) {
static struct entry _dent, *dentp1, *dentp2;
dentp1 = &(*dents)[count];
dentp2 = &(*dents)[ndents];
/* Copy count to tmp */
xstrlcpy(_dent.name, dentp1->name, NAME_MAX);
_dent.mode = dentp1->mode;
_dent.t = dentp1->t;
_dent.size = dentp1->size;
_dent.blocks = dentp1->blocks;
/* Copy ndents - 1 to count */
xstrlcpy(dentp1->name, dentp2->name, NAME_MAX);
dentp1->mode = dentp2->mode;
dentp1->t = dentp2->t;
dentp1->size = dentp2->size;
dentp1->blocks = dentp2->blocks;
/* Copy tmp to ndents - 1 */
xstrlcpy(dentp2->name, _dent.name, NAME_MAX);
dentp2->mode = _dent.mode;
dentp2->t = _dent.t;
dentp2->size = _dent.size;
dentp2->blocks = _dent.blocks;
--count;
}
continue;
}
}
}
static int
matches(char *fltr)
{
static regex_t re;
/* Search filter */
if (setfilter(&re, fltr) != 0)
return -1;
fill(&dents, visible, &re);
qsort(dents, ndents, sizeof(*dents), entrycmp);
return 0;
}
static int
filterentries(char *path)
{
static char ln[REGEX_MAX];
static wchar_t wln[REGEX_MAX];
static wint_t ch[2] = {0};
static int maxlen = REGEX_MAX - 1;
int r, total = ndents;
int oldcur = cur;
int len = 1;
char *pln = ln + 1;
ln[0] = wln[0] = FILTER;
ln[1] = wln[1] = '\0';
cur = 0;
cleartimeout();
echo();
curs_set(TRUE);
printprompt(ln);
while ((r = get_wch(ch)) != ERR) {
if (*ch == 127 /* handle DEL */ || *ch == KEY_DC || *ch == KEY_BACKSPACE) {
if (len == 1) {
cur = oldcur;
*ch = CONTROL('L');
goto end;
}
wln[--len] = '\0';
if (len == 1)
cur = oldcur;
wcstombs(ln, wln, REGEX_MAX);
ndents = total;
if (matches(pln) == -1)
continue;
redraw(path);
printprompt(ln);
continue;
}
if (r == OK) {
switch (*ch) {
case '\r': // with nonl(), this is ENTER key value
if (len == 1) {
cur = oldcur;
goto end;
}
if (matches(pln) == -1)
goto end;
redraw(path);
goto end;
case CONTROL('L'):
if (len == 1)
cur = oldcur; // fallthrough
case CONTROL('Q'):
goto end;
default:
/* Reset cur in case it's a repeat search */
if (len == 1)
cur = 0;
if (len == maxlen)
break;
wln[len] = (wchar_t)*ch;
wln[++len] = '\0';
wcstombs(ln, wln, REGEX_MAX);
ndents = total;
if (matches(pln) == -1)
continue;
redraw(path);
printprompt(ln);
}
} else {
if (len == 1)
cur = oldcur;
goto end;
}
}
end:
noecho();
curs_set(FALSE);
settimeout();
/* Return keys for navigation etc. */
return *ch;
}
/* Show a prompt with input string and return the changes */
static char *
xreadline(char *fname)
{
int old_curs = curs_set(1);
size_t len, pos;
int x, y, r;
wint_t ch[2] = {0};
wchar_t *buf = (wchar_t *)g_buf;
size_t buflen = NAME_MAX - 1;
DPRINTF_S(fname)
len = pos = mbstowcs(buf, fname, NAME_MAX);
/* For future: handle NULL, say for a new name */
if (len == (size_t)-1) {
buf[0] = '\0';
len = pos = 0;
}
getyx(stdscr, y, x);
cleartimeout();
while (1) {
buf[len] = ' ';
mvaddnwstr(y, x, buf, len + 1);
move(y, x + wcswidth(buf, pos));
if ((r = get_wch(ch)) != ERR) {
if (r == OK) {
if (*ch == KEY_ENTER || *ch == '\n' || *ch == '\r')
break;
if (*ch == CONTROL('L')) {
clearprompt();
len = pos = 0;
continue;
}
if (pos < buflen) {
memmove(buf + pos + 1, buf + pos, (len - pos) << 2);
buf[pos] = *ch;
++len, ++pos;
continue;
}
} else {
switch (*ch) {
case KEY_LEFT:
if (pos > 0)
--pos;
break;
case KEY_RIGHT:
if (pos < len)
++pos;
break;
case KEY_BACKSPACE:
if (pos > 0) {
memmove(buf + pos - 1, buf + pos, (len - pos) << 2);
--len, --pos;
}
break;
case KEY_DC:
if (pos < len) {
memmove(buf + pos, buf + pos + 1, (len - pos - 1) << 2);
--len;
}
break;
default:
break;
}
}
}
}
buf[len] = '\0';
if (old_curs != ERR) curs_set(old_curs);
settimeout();
DPRINTF_S(buf)
wcstombs(g_buf, buf, NAME_MAX);
return g_buf;
}
/*
* Returns "dir/name or "/name"
*/
static char *
mkpath(char *dir, char *name, char *out, size_t n)
{
/* Handle absolute path */
if (name[0] == '/')
xstrlcpy(out, name, n);
else {
/* Handle root case */
if (istopdir(dir))
snprintf(out, n, "/%s", name);
else
snprintf(out, n, "%s/%s", dir, name);
}
return out;
}
static void
parsebmstr(char *bms)
{
int i = 0;
while (*bms && i < BM_MAX) {
bookmark[i].key = bms;
++bms;
while (*bms && *bms != ':')
++bms;
if (!*bms) {
bookmark[i].key = NULL;
break;
}
*bms = '\0';
bookmark[i].loc = ++bms;
if (bookmark[i].loc[0] == '\0' || bookmark[i].loc[0] == ';') {
bookmark[i].key = NULL;
break;
}
while (*bms && *bms != ';')
++bms;
if (*bms)
*bms = '\0';
else
break;
++bms;
++i;
}
}
static char *
readinput(void)
{
cleartimeout();
echo();
curs_set(TRUE);
memset(g_buf, 0, LINE_MAX);
wgetnstr(stdscr, g_buf, LINE_MAX - 1);
noecho();
curs_set(FALSE);
settimeout();
return g_buf[0] ? g_buf : NULL;
}
/*
* Replace escape characters in a string with '?'
* Adjust string length to maxcols if > 0;
*/
static char *
unescape(const char *str, uint maxcols)
{
static char buffer[PATH_MAX];
static wchar_t wbuf[PATH_MAX];
static wchar_t *buf;
static size_t len, width;
buffer[0] = '\0';
buf = wbuf;
/* Convert multi-byte to wide char */
len = mbstowcs(wbuf, str, PATH_MAX);
if (maxcols) {
width = wcswidth(wbuf, len);
if (width > maxcols)
wbuf[maxcols] = 0;
}
while (*buf) {
if (*buf <= '\x1f' || *buf == '\x7f')
*buf = '\?';
++buf;
}
/* Convert wide char to multi-byte */
wcstombs(buffer, wbuf, PATH_MAX);
return buffer;
}
static void
printent(struct entry *ent, int sel)
{
static char *pname;
pname = unescape(ent->name, COLS - 5);
if (S_ISDIR(ent->mode))
printw("%s%s/\n", CURSYM(sel), pname);
else if (S_ISLNK(ent->mode))
printw("%s%s@\n", CURSYM(sel), pname);
else if (S_ISSOCK(ent->mode))
printw("%s%s=\n", CURSYM(sel), pname);
else if (S_ISFIFO(ent->mode))
printw("%s%s|\n", CURSYM(sel), pname);
else if (ent->mode & 0100)
printw("%s%s*\n", CURSYM(sel), pname);
else
printw("%s%s\n", CURSYM(sel), pname);
/* Dirs are always shown on top */
if (cfg.dircolor && !S_ISDIR(ent->mode)) {
attroff(COLOR_PAIR(1) | A_BOLD);
cfg.dircolor = 0;
}
}
static char *
coolsize(off_t size)
{
static const char * const U = "BKMGTPEZY";
static char size_buf[12]; /* Buffer to hold human readable size */
static int i;
static off_t tmp;
static long double rem;
static const double div_2_pow_10 = 1.0 / 1024.0;
i = 0;
rem = 0;
while (size > 1024) {
tmp = size;
size >>= 10;
rem = tmp - (size << 10);
++i;
}
snprintf(size_buf, 12, "%.*Lf%c", i, size + rem * div_2_pow_10, U[i]);
return size_buf;
}
static void
printent_long(struct entry *ent, int sel)
{
static char buf[18], *pname;
strftime(buf, 18, "%d-%m-%Y %H:%M", localtime(&ent->t));
pname = unescape(ent->name, COLS - 32);
if (sel)
attron(A_REVERSE);
if (!cfg.blkorder) {
if (S_ISDIR(ent->mode))
printw("%s%-16.16s / %s/\n", CURSYM(sel), buf, pname);
else if (S_ISLNK(ent->mode))
printw("%s%-16.16s @ %s@\n", CURSYM(sel), buf, pname);
else if (S_ISSOCK(ent->mode))
printf("%s%-16.16s = %s=\n", CURSYM(sel), buf, pname);
else if (S_ISFIFO(ent->mode))
printw("%s%-16.16s | %s|\n", CURSYM(sel), buf, pname);
else if (S_ISBLK(ent->mode))
printw("%s%-16.16s b %s\n", CURSYM(sel), buf, pname);
else if (S_ISCHR(ent->mode))
printw("%s%-16.16s c %s\n", CURSYM(sel), buf, pname);
else if (ent->mode & 0100)
printw("%s%-16.16s %8.8s* %s*\n", CURSYM(sel), buf, coolsize(ent->size), pname);
else
printw("%s%-16.16s %8.8s %s\n", CURSYM(sel), buf, coolsize(ent->size), pname);
} else {
if (S_ISDIR(ent->mode))
printw("%s%-16.16s %8.8s/ %s/\n", CURSYM(sel), buf, coolsize(ent->blocks << 9), pname);
else if (S_ISLNK(ent->mode))
printw("%s%-16.16s @ %s@\n", CURSYM(sel), buf, pname);
else if (S_ISSOCK(ent->mode))
printw("%s%-16.16s = %s=\n", CURSYM(sel), buf, pname);
else if (S_ISFIFO(ent->mode))
printw("%s%-16.16s | %s|\n", CURSYM(sel), buf, pname);
else if (S_ISBLK(ent->mode))
printw("%s%-16.16s b %s\n", CURSYM(sel), buf, pname);
else if (S_ISCHR(ent->mode))
printw("%s%-16.16s c %s\n", CURSYM(sel), buf, pname);
else if (ent->mode & 0100)
printw("%s%-16.16s %8.8s* %s*\n", CURSYM(sel), buf, coolsize(ent->blocks << 9), pname);
else
printw("%s%-16.16s %8.8s %s\n", CURSYM(sel), buf, coolsize(ent->blocks << 9), pname);
}
/* Dirs are always shown on top */
if (cfg.dircolor && !S_ISDIR(ent->mode)) {
attroff(COLOR_PAIR(1) | A_BOLD);
cfg.dircolor = 0;
}
if (sel)
attroff(A_REVERSE);
}
static void (*printptr)(struct entry *ent, int sel) = &printent_long;
static char
get_fileind(mode_t mode, char *desc)
{
static char c;
if (S_ISREG(mode)) {
c = '-';
sprintf(desc, "%s", "regular file");
if (mode & 0100)
strcat(desc, ", executable");
} else if (S_ISDIR(mode)) {
c = 'd';
sprintf(desc, "%s", "directory");
} else if (S_ISBLK(mode)) {
c = 'b';
sprintf(desc, "%s", "block special device");
} else if (S_ISCHR(mode)) {
c = 'c';
sprintf(desc, "%s", "character special device");
#ifdef S_ISFIFO
} else if (S_ISFIFO(mode)) {
c = 'p';
sprintf(desc, "%s", "FIFO");
#endif /* S_ISFIFO */
#ifdef S_ISLNK
} else if (S_ISLNK(mode)) {
c = 'l';
sprintf(desc, "%s", "symbolic link");
#endif /* S_ISLNK */
#ifdef S_ISSOCK
} else if (S_ISSOCK(mode)) {
c = 's';
sprintf(desc, "%s", "socket");
#endif /* S_ISSOCK */
#ifdef S_ISDOOR
/* Solaris 2.6, etc. */
} else if (S_ISDOOR(mode)) {
c = 'D';
desc[0] = '\0';
#endif /* S_ISDOOR */
} else {
/* Unknown type -- possibly a regular file? */
c = '?';
desc[0] = '\0';
}
return c;
}
/* Convert a mode field into "ls -l" type perms field. */
static char *
get_lsperms(mode_t mode, char *desc)
{
static const char * const rwx[] = {"---", "--x", "-w-", "-wx", "r--", "r-x", "rw-", "rwx"};
static char bits[11];
bits[0] = get_fileind(mode, desc);
strcpy(&bits[1], rwx[(mode >> 6) & 7]);
strcpy(&bits[4], rwx[(mode >> 3) & 7]);
strcpy(&bits[7], rwx[(mode & 7)]);
if (mode & S_ISUID)
bits[3] = (mode & 0100) ? 's' : 'S'; /* user executable */
if (mode & S_ISGID)
bits[6] = (mode & 0010) ? 's' : 'l'; /* group executable */
if (mode & S_ISVTX)
bits[9] = (mode & 0001) ? 't' : 'T'; /* others executable */
bits[10] = '\0';
return bits;
}
/*
* Gets only a single line (that's what we need
* for now) or shows full command output in pager.
*
* If pager is valid, returns NULL
*/
static char *
get_output(char *buf, size_t bytes, char *file, char *arg1, char *arg2,
int pager)
{
pid_t pid;
int pipefd[2];
FILE *pf;
int tmp, flags;
char *ret = NULL;
if (pipe(pipefd) == -1)
errexit();
for (tmp = 0; tmp < 2; ++tmp) {
/* Get previous flags */
flags = fcntl(pipefd[tmp], F_GETFL, 0);
/* Set bit for non-blocking flag */
flags |= O_NONBLOCK;
/* Change flags on fd */
fcntl(pipefd[tmp], F_SETFL, flags);
}
pid = fork();
if (pid == 0) {
/* In child */
close(pipefd[0]);
dup2(pipefd[1], STDOUT_FILENO);
dup2(pipefd[1], STDERR_FILENO);
close(pipefd[1]);
execlp(file, file, arg1, arg2, NULL);
_exit(1);
}
/* In parent */
waitpid(pid, &tmp, 0);
close(pipefd[1]);
if (!pager) {
pf = fdopen(pipefd[0], "r");
if (pf) {
ret = fgets(buf, bytes, pf);
close(pipefd[0]);
}
return ret;
}
pid = fork();
if (pid == 0) {
/* Show in pager in child */
dup2(pipefd[0], STDIN_FILENO);
close(pipefd[0]);
execlp("less", "less", NULL);
_exit(1);
}
/* In parent */
waitpid(pid, &tmp, 0);
close(pipefd[0]);
return NULL;
}
/*
* Follows the stat(1) output closely
*/
static int
show_stats(char *fpath, char *fname, struct stat *sb)
{
char *perms = get_lsperms(sb->st_mode, g_buf);
char *p, *begin = g_buf;
char tmp[] = "/tmp/nnnXXXXXX";
int fd = mkstemp(tmp);
if (fd == -1)
return -1;
/* Show file name or 'symlink' -> 'target' */
if (perms[0] == 'l') {
/* Note that MAX_CMD_LEN > PATH_MAX */
ssize_t len = readlink(fpath, g_buf, MAX_CMD_LEN);
if (len != -1) {
g_buf[len] = '\0';
dprintf(fd, " File: '%s' -> ", unescape(fname, 0));
dprintf(fd, "'%s'", unescape(g_buf, 0));
xstrlcpy(g_buf, "symbolic link", MAX_CMD_LEN);
}
} else
dprintf(fd, " File: '%s'", unescape(fname, 0));
/* Show size, blocks, file type */
#ifdef __APPLE__
dprintf(fd, "\n Size: %-15lld Blocks: %-10lld IO Block: %-6d %s",
#else
dprintf(fd, "\n Size: %-15ld Blocks: %-10ld IO Block: %-6ld %s",
#endif
sb->st_size, sb->st_blocks, sb->st_blksize, g_buf);
/* Show containing device, inode, hardlink count */
#ifdef __APPLE__
sprintf(g_buf, "%xh/%ud", sb->st_dev, sb->st_dev);
dprintf(fd, "\n Device: %-15s Inode: %-11llu Links: %-9hu",
#else
sprintf(g_buf, "%lxh/%lud", sb->st_dev, sb->st_dev);
dprintf(fd, "\n Device: %-15s Inode: %-11lu Links: %-9lu",
#endif
g_buf, sb->st_ino, sb->st_nlink);
/* Show major, minor number for block or char device */
if (perms[0] == 'b' || perms[0] == 'c')
dprintf(fd, " Device type: %x,%x", major(sb->st_rdev), minor(sb->st_rdev));
/* Show permissions, owner, group */
dprintf(fd, "\n Access: 0%d%d%d/%s Uid: (%u/%s) Gid: (%u/%s)", (sb->st_mode >> 6) & 7, (sb->st_mode >> 3) & 7,
sb->st_mode & 7, perms, sb->st_uid, (getpwuid(sb->st_uid))->pw_name, sb->st_gid, (getgrgid(sb->st_gid))->gr_name);
/* Show last access time */
strftime(g_buf, 40, "%a %d-%b-%Y %T %z,%Z", localtime(&sb->st_atime));
dprintf(fd, "\n\n Access: %s", g_buf);
/* Show last modification time */
strftime(g_buf, 40, "%a %d-%b-%Y %T %z,%Z", localtime(&sb->st_mtime));
dprintf(fd, "\n Modify: %s", g_buf);
/* Show last status change time */
strftime(g_buf, 40, "%a %d-%b-%Y %T %z,%Z", localtime(&sb->st_ctime));
dprintf(fd, "\n Change: %s", g_buf);
if (S_ISREG(sb->st_mode)) {
/* Show file(1) output */
p = get_output(g_buf, MAX_CMD_LEN, "file", "-b", fpath, 0);
if (p) {
dprintf(fd, "\n\n ");
while (*p) {
if (*p == ',') {
*p = '\0';
dprintf(fd, " %s\n", begin);
begin = p + 1;
}
++p;
}
dprintf(fd, " %s", begin);
}
dprintf(fd, "\n\n");
} else
dprintf(fd, "\n\n\n");
close(fd);
exitcurses();
get_output(NULL, 0, "cat", tmp, NULL, 1);
unlink(tmp);
initcurses();
return 0;
}
static int
getorder(size_t size)
{
switch (size) {
case 4096:
return 12;
case 512:
return 9;
case 8192:
return 13;
case 16384:
return 14;
case 32768:
return 15;
case 65536:
return 16;
case 131072:
return 17;
case 262144:
return 18;
case 524288:
return 19;
case 1048576:
return 20;
case 2048:
return 11;
case 1024:
return 10;
default:
return 0;
}
}
static size_t
get_fs_free(char *path)
{
static struct statvfs svb;
if (statvfs(path, &svb) == -1)
return 0;
else
return svb.f_bavail << getorder(svb.f_frsize);
}
static size_t
get_fs_capacity(char *path)
{
struct statvfs svb;
if (statvfs(path, &svb) == -1)
return 0;
else
return svb.f_blocks << getorder(svb.f_bsize);
}
static int
show_mediainfo(char *fpath, char *arg)
{
if (!get_output(g_buf, MAX_CMD_LEN, "which", metaviewer, NULL, 0))
return -1;
exitcurses();
get_output(NULL, 0, metaviewer, fpath, arg, 1);
initcurses();
return 0;
}
/*
* The help string tokens (each line) start with a HEX value
* which indicates the number of spaces to print before the
* particular token. This method was chosen instead of a flat
* string because the number of bytes in help was increasing
* the binary size by around a hundred bytes. This would only
* have increased as we keep adding new options.
*/
static int
show_help(char *path)
{
char tmp[] = "/tmp/nnnXXXXXX";
int i = 0, fd = mkstemp(tmp);
char *start, *end;
static char helpstr[] = (
"cKey | Function\n"
"e- + -\n"
"7↑, k, ^P | Previous entry\n"
"7↓, j, ^N | Next entry\n"
"7PgUp, ^U | Scroll half page up\n"
"7PgDn, ^D | Scroll half page down\n"
"1Home, g, ^, ^A | Jump to first entry\n"
"2End, G, $, ^E | Jump to last entry\n"
"4→, ↵, l, ^M | Open file or enter dir\n"
"1←, Bksp, h, ^H | Go to parent dir\n"
"9Insert | Toggle navigate-as-you-type\n"
"e~ | Go HOME\n"
"e& | Go to initial dir\n"
"e- | Go to last visited dir\n"
"e/ | Filter dir contents\n"
"d^/ | Open desktop search tool\n"
"e. | Toggle hide .dot files\n"
"eb | Show bookmark prompt\n"
"d^B | Mark current dir\n"
"d^V | Go to marked dir\n"
"ec | Show change dir prompt\n"
"ed | Toggle detail view\n"
"eD | Show current file details\n"
"em | Show concise media info\n"
"eM | Show full media info\n"
"d^R | Rename selected entry\n"
"es | Toggle sort by file size\n"
"eS | Toggle disk usage mode\n"
"et | Toggle sort by mtime\n"
"e! | Spawn SHELL in dir\n"
"ee | Edit entry in EDITOR\n"
"eo | Open dir in file manager\n"
"ep | Open entry in PAGER\n"
"d^K | Invoke file path copier\n"
"d^L | Redraw, clear prompt\n"
"e? | Show help, settings\n"
"eQ | Quit and change dir\n"
"aq, ^Q | Quit\n\n");
if (fd == -1)
return -1;
start = end = helpstr;
while (*end) {
while (*end != '\n')
++end;
if (start == end) {
++end;
continue;
}
dprintf(fd, "%*c%.*s", xchartohex(*start), ' ', (int)(end - start), start + 1);
start = ++end;
}
dprintf(fd, "\n");
if (getenv("NNN_BMS")) {
dprintf(fd, "BOOKMARKS\n");
for (; i < BM_MAX; ++i)
if (bookmark[i].key)
dprintf(fd, " %s: %s\n",
bookmark[i].key, bookmark[i].loc);
else
break;
dprintf(fd, "\n");
}
if (editor)
dprintf(fd, "NNN_USE_EDITOR: %s\n", editor);
if (desktop_manager)
dprintf(fd, "NNN_DE_FILE_MANAGER: %s\n", desktop_manager);
if (idletimeout)
dprintf(fd, "NNN_IDLE_TIMEOUT: %d secs\n", idletimeout);
if (copier)
dprintf(fd, "NNN_COPIER: %s\n", copier);
dprintf(fd, "\nVolume: %s of ", coolsize(get_fs_free(path)));
dprintf(fd, "%s free\n", coolsize(get_fs_capacity(path)));
dprintf(fd, "\n");
close(fd);
exitcurses();
get_output(NULL, 0, "cat", tmp, NULL, 1);
unlink(tmp);
initcurses();
return 0;
}
static int
sum_bsizes(const char *fpath, const struct stat *sb,
int typeflag, struct FTW *ftwbuf)
{
if (sb->st_blocks && (typeflag == FTW_F || typeflag == FTW_D))
ent_blocks += sb->st_blocks;
++num_files;
return 0;
}
static int
dentfill(char *path, struct entry **dents,
int (*filter)(regex_t *, char *), regex_t *re)
{
static DIR *dirp;
static struct dirent *dp;
static struct stat sb_path, sb;
static int fd, n;
static char *namep;
static ulong num_saved;
static struct entry *dentp;
dirp = opendir(path);
if (dirp == NULL)
return 0;
fd = dirfd(dirp);
n = 0;
if (cfg.blkorder) {
num_files = 0;
dir_blocks = 0;
if (fstatat(fd, ".", &sb_path, 0) == -1) {
printwarn();
return 0;
}
}
while ((dp = readdir(dirp)) != NULL) {
namep = dp->d_name;
if (filter(re, namep) == 0) {
if (!cfg.blkorder)
continue;
/* Skip self and parent */
if ((namep[0] == '.' && (namep[1] == '\0' || (namep[1] == '.' && namep[2] == '\0'))))
continue;
if (fstatat(fd, namep, &sb, AT_SYMLINK_NOFOLLOW)
== -1)
continue;
if (S_ISDIR(sb.st_mode)) {
if (sb_path.st_dev == sb.st_dev) {
ent_blocks = 0;
mkpath(path, namep, g_buf, PATH_MAX);
if (nftw(g_buf, sum_bsizes, open_max, FTW_MOUNT | FTW_PHYS) == -1) {
printmsg(STR_NFTWFAIL);
dir_blocks += sb.st_blocks;
} else
dir_blocks += ent_blocks;
}
} else {
if (sb.st_blocks)
dir_blocks += sb.st_blocks;
++num_files;
}
continue;
}
/* Skip self and parent */
if ((namep[0] == '.' && (namep[1] == '\0' ||
(namep[1] == '.' && namep[2] == '\0'))))
continue;
if (fstatat(fd, namep, &sb, AT_SYMLINK_NOFOLLOW) == -1) {
if (*dents)
free(*dents);
errexit();
}
if (n == total_dents) {
total_dents += 64;
*dents = realloc(*dents, total_dents * sizeof(**dents));
if (*dents == NULL)
errexit();
}
dentp = &(*dents)[n];
xstrlcpy(dentp->name, namep, NAME_MAX);
dentp->mode = sb.st_mode;
dentp->t = sb.st_mtime;
dentp->size = sb.st_size;
if (cfg.blkorder) {
if (S_ISDIR(sb.st_mode)) {
ent_blocks = 0;
num_saved = num_files + 1;
mkpath(path, namep, g_buf, PATH_MAX);
if (nftw(g_buf, sum_bsizes, open_max, FTW_MOUNT | FTW_PHYS) == -1) {
printmsg(STR_NFTWFAIL);
dentp->blocks = sb.st_blocks;
} else
dentp->blocks = ent_blocks;
if (sb_path.st_dev == sb.st_dev)
dir_blocks += dentp->blocks;
else
num_files = num_saved;
} else {
dentp->blocks = sb.st_blocks;
dir_blocks += dentp->blocks;
++num_files;
}
}
++n;
}
/* Should never be null */
if (closedir(dirp) == -1) {
if (*dents)
free(*dents);
errexit();
}
return n;
}
static void
dentfree(struct entry *dents)
{
free(dents);
}
/* Return the position of the matching entry or 0 otherwise */
static int
dentfind(struct entry *dents, int n, char *path)
{
if (!path)
return 0;
static int i;
static char *p;
p = basename(path);
DPRINTF_S(p);
for (i = 0; i < n; ++i)
if (xstrcmp(p, dents[i].name) == 0)
return i;
return 0;
}
static int
populate(char *path, char *oldpath, char *fltr)
{
static regex_t re;
/* Can fail when permissions change while browsing.
* It's assumed that path IS a directory when we are here.
*/
if (access(path, R_OK) == -1)
return -1;
/* Search filter */
if (setfilter(&re, fltr) != 0)
return -1;
if (cfg.blkorder) {
printmsg("Calculating...");
refresh();
}
ndents = dentfill(path, &dents, visible, &re);
qsort(dents, ndents, sizeof(*dents), entrycmp);
/* Find cur from history */
cur = dentfind(dents, ndents, oldpath);
return 0;
}
static void
redraw(char *path)
{
static int nlines, i;
static size_t ncols;
nlines = MIN(LINES - 4, ndents);
/* Clean screen */
erase();
/* Strip trailing slashes */
for (i = xstrlen(path) - 1; i > 0; --i)
if (path[i] == '/')
path[i] = '\0';
else
break;
DPRINTF_D(cur);
DPRINTF_S(path);
/* No text wrapping in cwd line */
if (!realpath(path, g_buf)) {
printwarn();
return;
}
ncols = COLS;
if (ncols > PATH_MAX)
ncols = PATH_MAX;
/* - xstrlen(CWD) - 1 = 6 */
g_buf[ncols - 6] = '\0';
printw(CWD "%s\n\n", g_buf);
if (cfg.showcolor) {
attron(COLOR_PAIR(1) | A_BOLD);
cfg.dircolor = 1;
}
/* Print listing */
if (cur < (nlines >> 1)) {
for (i = 0; i < nlines; ++i)
printptr(&dents[i], i == cur);
} else if (cur >= ndents - (nlines >> 1)) {
for (i = ndents - nlines; i < ndents; ++i)
printptr(&dents[i], i == cur);
} else {
static int odd;
odd = ISODD(nlines);
nlines >>= 1;
for (i = cur - nlines; i < cur + nlines + odd; ++i)
printptr(&dents[i], i == cur);
}
/* Must reset e.g. no files in dir */
if (cfg.dircolor) {
attroff(COLOR_PAIR(1) | A_BOLD);
cfg.dircolor = 0;
}
if (cfg.showdetail) {
if (ndents) {
static char ind[2] = "\0\0";
static char sort[9];
if (cfg.mtimeorder)
sprintf(sort, "by time ");
else if (cfg.sizeorder)
sprintf(sort, "by size ");
else
sort[0] = '\0';
if (S_ISDIR(dents[cur].mode))
ind[0] = '/';
else if (S_ISLNK(dents[cur].mode))
ind[0] = '@';
else if (S_ISSOCK(dents[cur].mode))
ind[0] = '=';
else if (S_ISFIFO(dents[cur].mode))
ind[0] = '|';
else if (dents[cur].mode & 0100)
ind[0] = '*';
else
ind[0] = '\0';
/* We need to show filename as it may
* be truncated in directory listing
*/
if (!cfg.blkorder)
sprintf(g_buf, "total %d %s[%s%s]", ndents, sort, unescape(dents[cur].name, 0), ind);
else {
i = sprintf(g_buf, "du: %s (%lu files) ", coolsize(dir_blocks << 9), num_files);
sprintf(g_buf + i, "vol: %s free [%s%s]", coolsize(get_fs_free(path)), unescape(dents[cur].name, 0), ind);
}
printmsg(g_buf);
} else
printmsg("0 items");
}
}
static void
browse(char *ipath, char *ifilter)
{
static char path[PATH_MAX], oldpath[PATH_MAX], newpath[PATH_MAX], lastdir[PATH_MAX], mark[PATH_MAX];
static char fltr[LINE_MAX];
char *dir, *tmp, *run, *env, *dstdir = NULL;
struct stat sb;
int r, fd, presel;
enum action sel = SEL_RUNARG + 1;
xstrlcpy(path, ipath, PATH_MAX);
xstrlcpy(fltr, ifilter, LINE_MAX);
oldpath[0] = newpath[0] = lastdir[0] = mark[0] = '\0';
if (cfg.filtermode)
presel = FILTER;
else
presel = 0;
begin:
#ifdef LINUX_INOTIFY
if (inotify_wd >= 0)
inotify_rm_watch(inotify_fd, inotify_wd);
#elif defined(BSD_KQUEUE)
if (event_fd >= 0)
close(event_fd);
#endif
if (populate(path, oldpath, fltr) == -1) {
printwarn();
goto nochange;
}
#ifdef LINUX_INOTIFY
inotify_wd = inotify_add_watch(inotify_fd, path, INOTIFY_MASK);
#elif defined(BSD_KQUEUE)
event_fd = open(path, O_EVTONLY);
if (event_fd >= 0)
EV_SET(&events_to_monitor[0], event_fd, EVFILT_VNODE, EV_ADD | EV_CLEAR, KQUEUE_FFLAGS, 0, path);
#endif
for (;;) {
redraw(path);
nochange:
/* Exit if parent has exited */
if (getppid() == 1)
_exit(0);
sel = nextsel(&run, &env, &presel);
switch (sel) {
case SEL_CDQUIT:
{
char *tmpfile = "/tmp/nnn";
tmp = getenv("NNN_TMPFILE");
if (tmp)
tmpfile = tmp;
FILE *fp = fopen(tmpfile, "w");
if (fp) {
fprintf(fp, "cd \"%s\"", path);
fclose(fp);
}
/* Fall through to exit */
} // fallthrough
case SEL_QUIT:
dentfree(dents);
return;
case SEL_BACK:
/* There is no going back */
if (istopdir(path)) {
printmsg(STR_ATROOT);
goto nochange;
}
dir = xdirname(path);
if (access(dir, R_OK) == -1) {
printwarn();
goto nochange;
}
/* Save history */
xstrlcpy(oldpath, path, PATH_MAX);
/* Save last working directory */
xstrlcpy(lastdir, path, PATH_MAX);
xstrlcpy(path, dir, PATH_MAX);
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
if (cfg.filtermode)
presel = FILTER;
goto begin;
case SEL_GOIN:
/* Cannot descend in empty directories */
if (ndents == 0)
goto begin;
mkpath(path, dents[cur].name, newpath, PATH_MAX);
DPRINTF_S(newpath);
/* Get path info */
fd = open(newpath, O_RDONLY | O_NONBLOCK);
if (fd == -1) {
printwarn();
goto nochange;
}
r = fstat(fd, &sb);
if (r == -1) {
printwarn();
close(fd);
goto nochange;
}
close(fd);
DPRINTF_U(sb.st_mode);
switch (sb.st_mode & S_IFMT) {
case S_IFDIR:
if (access(newpath, R_OK) == -1) {
printwarn();
goto nochange;
}
/* Save last working directory */
xstrlcpy(lastdir, path, PATH_MAX);
xstrlcpy(path, newpath, PATH_MAX);
oldpath[0] = '\0';
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
if (cfg.filtermode)
presel = FILTER;
goto begin;
case S_IFREG:
{
/* If NNN_USE_EDITOR is set,
* open text in EDITOR
*/
if (editor) {
if (getmime(dents[cur].name)) {
spawn(editor, newpath, NULL, NULL, F_NORMAL);
continue;
}
/* Recognize and open plain
* text files with vi
*/
if (get_output(g_buf, MAX_CMD_LEN, "file", "-bi", newpath, 0) == NULL)
continue;
if (strstr(g_buf, "text/") == g_buf) {
spawn(editor, newpath, NULL, NULL, F_NORMAL);
continue;
}
}
/* Invoke desktop opener as last resort */
spawn(utils[0], newpath, NULL, NULL, F_NOTRACE);
continue;
}
default:
printmsg("Unsupported file");
goto nochange;
}
case SEL_FLTR:
presel = filterentries(path);
xstrlcpy(fltr, ifilter, LINE_MAX);
DPRINTF_S(fltr);
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto nochange;
case SEL_MFLTR:
cfg.filtermode ^= 1;
if (cfg.filtermode)
presel = FILTER;
else
printmsg("navigate-as-you-type off");
goto nochange;
case SEL_SEARCH:
spawn(player, path, "search", NULL, F_NORMAL);
break;
case SEL_NEXT:
if (cur < ndents - 1)
++cur;
else if (ndents)
/* Roll over, set cursor to first entry */
cur = 0;
break;
case SEL_PREV:
if (cur > 0)
--cur;
else if (ndents)
/* Roll over, set cursor to last entry */
cur = ndents - 1;
break;
case SEL_PGDN:
if (cur < ndents - 1)
cur += MIN((LINES - 4) / 2, ndents - 1 - cur);
break;
case SEL_PGUP:
if (cur > 0)
cur -= MIN((LINES - 4) / 2, cur);
break;
case SEL_HOME:
cur = 0;
break;
case SEL_END:
cur = ndents - 1;
break;
case SEL_CD:
{
char *input;
int truecd;
/* Save the program start dir */
tmp = getcwd(newpath, PATH_MAX);
if (tmp == NULL) {
printwarn();
goto nochange;
}
/* Switch to current path for readline(3) */
if (chdir(path) == -1) {
printwarn();
goto nochange;
}
exitcurses();
tmp = readline("chdir: ");
initcurses();
/* Change back to program start dir */
if (chdir(newpath) == -1)
printwarn();
if (tmp[0] == '\0')
break;
/* Add to readline(3) history */
add_history(tmp);
input = tmp;
tmp = strstrip(tmp);
if (tmp[0] == '\0') {
free(input);
break;
}
truecd = 0;
if (tmp[0] == '~') {
/* Expand ~ to HOME absolute path */
char *home = getenv("HOME");
if (home)
snprintf(newpath, PATH_MAX, "%s%s", home, tmp + 1);
else {
free(input);
printmsg(STR_NOHOME);
goto nochange;
}
} else if (tmp[0] == '-' && tmp[1] == '\0') {
if (lastdir[0] == '\0') {
free(input);
break;
}
/* Switch to last visited dir */
xstrlcpy(newpath, lastdir, PATH_MAX);
truecd = 1;
} else if ((r = all_dots(tmp))) {
if (r == 1) {
/* Always in the current dir */
free(input);
break;
}
/* Show a message if already at / */
if (istopdir(path)) {
printmsg(STR_ATROOT);
free(input);
goto nochange;
}
--r; /* One . for the current dir */
dir = path;
/* Note: fd is used as a tmp variable here */
for (fd = 0; fd < r; ++fd) {
/* Reached / ? */
if (istopdir(path)) {
/* Can't cd beyond / */
break;
}
dir = xdirname(dir);
if (access(dir, R_OK) == -1) {
printwarn();
free(input);
goto nochange;
}
}
truecd = 1;
/* Save the path in case of cd ..
* We mark the current dir in parent dir
*/
if (r == 1) {
xstrlcpy(oldpath, path, PATH_MAX);
truecd = 2;
}
xstrlcpy(newpath, dir, PATH_MAX);
} else
mkpath(path, tmp, newpath, PATH_MAX);
free(input);
if (!xdiraccess(newpath))
goto nochange;
if (truecd == 0) {
/* Probable change in dir */
/* No-op if it's the same directory */
if (xstrcmp(path, newpath) == 0)
break;
oldpath[0] = '\0';
} else if (truecd == 1)
/* Sure change in dir */
oldpath[0] = '\0';
/* Save last working directory */
xstrlcpy(lastdir, path, PATH_MAX);
/* Save the newly opted dir in path */
xstrlcpy(path, newpath, PATH_MAX);
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
DPRINTF_S(path);
if (cfg.filtermode)
presel = FILTER;
goto begin;
}
case SEL_CDHOME:
dstdir = getenv("HOME");
if (dstdir == NULL) {
clearprompt();
goto nochange;
} // fallthrough
case SEL_CDBEGIN:
if (!dstdir)
dstdir = ipath;
if (!xdiraccess(dstdir)) {
dstdir = NULL;
goto nochange;
}
if (xstrcmp(path, dstdir) == 0) {
dstdir = NULL;
break;
}
/* Save last working directory */
xstrlcpy(lastdir, path, PATH_MAX);
xstrlcpy(path, dstdir, PATH_MAX);
oldpath[0] = '\0';
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
DPRINTF_S(path);
if (cfg.filtermode)
presel = FILTER;
dstdir = NULL;
goto begin;
case SEL_CDLAST: // fallthrough
case SEL_VISIT:
if (sel == SEL_VISIT) {
if (xstrcmp(mark, path) == 0)
break;
tmp = mark;
} else
tmp = lastdir;
if (tmp[0] == '\0') {
printmsg("Not set...");
goto nochange;
}
if (!xdiraccess(tmp))
goto nochange;
xstrlcpy(newpath, tmp, PATH_MAX);
xstrlcpy(lastdir, path, PATH_MAX);
xstrlcpy(path, newpath, PATH_MAX);
oldpath[0] = '\0';
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
DPRINTF_S(path);
if (cfg.filtermode)
presel = FILTER;
goto begin;
case SEL_CDBM:
printprompt("key: ");
tmp = readinput();
clearprompt();
if (tmp == NULL)
break;
for (r = 0; bookmark[r].key && r < BM_MAX; ++r) {
if (xstrcmp(bookmark[r].key, tmp) == -1)
continue;
if (bookmark[r].loc[0] == '~') {
/* Expand ~ to HOME */
char *home = getenv("HOME");
if (home)
snprintf(newpath, PATH_MAX, "%s%s", home, bookmark[r].loc + 1);
else {
printmsg(STR_NOHOME);
goto nochange;
}
} else
mkpath(path, bookmark[r].loc,
newpath, PATH_MAX);
if (!xdiraccess(newpath))
goto nochange;
if (xstrcmp(path, newpath) == 0)
break;
oldpath[0] = '\0';
break;
}
if (!bookmark[r].key) {
printmsg("No matching bookmark");
goto nochange;
}
/* Save last working directory */
xstrlcpy(lastdir, path, PATH_MAX);
/* Save the newly opted dir in path */
xstrlcpy(path, newpath, PATH_MAX);
/* Reset filter */
xstrlcpy(fltr, ifilter, LINE_MAX);
DPRINTF_S(path);
if (cfg.filtermode)
presel = FILTER;
goto begin;
case SEL_MARK:
xstrlcpy(mark, path, PATH_MAX);
printmsg(mark);
goto nochange;
case SEL_TOGGLEDOT:
cfg.showhidden ^= 1;
initfilter(cfg.showhidden, &ifilter);
xstrlcpy(fltr, ifilter, LINE_MAX);
goto begin;
case SEL_DETAIL:
cfg.showdetail ^= 1;
cfg.showdetail ? (printptr = &printent_long) : (printptr = &printent);
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto begin;
case SEL_STATS:
if (ndents > 0) {
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
r = lstat(oldpath, &sb);
if (r == -1) {
if (dents)
dentfree(dents);
errexit();
} else {
r = show_stats(oldpath, dents[cur].name, &sb);
if (r < 0) {
printwarn();
goto nochange;
}
}
}
break;
case SEL_MEDIA: // fallthrough
case SEL_FMEDIA:
if (ndents > 0) {
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
if (show_mediainfo(oldpath, run) == -1) {
sprintf(g_buf, "%s missing", metaviewer);
printmsg(g_buf);
goto nochange;
}
}
break;
case SEL_DFB:
if (!desktop_manager) {
printmsg("NNN_DE_FILE_MANAGER not set");
goto nochange;
}
spawn(desktop_manager, path, NULL, path, F_NOTRACE | F_NOWAIT);
break;
case SEL_FSIZE:
cfg.sizeorder ^= 1;
cfg.mtimeorder = 0;
cfg.blkorder = 0;
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto begin;
case SEL_BSIZE:
cfg.blkorder ^= 1;
if (cfg.blkorder) {
cfg.showdetail = 1;
printptr = &printent_long;
}
cfg.mtimeorder = 0;
cfg.sizeorder = 0;
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto begin;
case SEL_MTIME:
cfg.mtimeorder ^= 1;
cfg.sizeorder = 0;
cfg.blkorder = 0;
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto begin;
case SEL_REDRAW:
/* Save current */
if (ndents > 0)
mkpath(path, dents[cur].name, oldpath, PATH_MAX);
goto begin;
case SEL_COPY:
if (copier && ndents) {
if (istopdir(path))
snprintf(newpath, PATH_MAX, "/%s", dents[cur].name);
else
snprintf(newpath, PATH_MAX, "%s/%s", path, dents[cur].name);
spawn(copier, newpath, NULL, NULL, F_NONE);
printmsg(newpath);
} else if (!copier)
printmsg("NNN_COPIER is not set");
goto nochange;
case SEL_RENAME:
if (ndents <= 0)
break;
printprompt("");
tmp = xreadline(dents[cur].name);
clearprompt();
if (tmp == NULL || tmp[0] == '\0')
break;
/* Allow only relative paths */
if (tmp[0] == '/' || basename(tmp) != tmp) {
printmsg("relative paths only");
goto nochange;
}
/* Skip renaming to same name */
if (xstrcmp(tmp, dents[cur].name) == 0)
break;
/* Open the descriptor to currently open directory */
fd = open(path, O_RDONLY | O_DIRECTORY);
if (fd == -1) {
printwarn();
goto nochange;
}
/* Check if another file with same name exists */
if (faccessat(fd, tmp, F_OK, AT_SYMLINK_NOFOLLOW) != -1) {
/* File with the same name exists */
printprompt("Press 'y' to overwrite");
cleartimeout();
r = getch();
settimeout();
if (r != 'y') {
close(fd);
break;
}
}
/* Rename the file */
r = renameat(fd, dents[cur].name, fd, tmp);
if (r != 0) {
printwarn();
close(fd);
goto nochange;
}
close(fd);
mkpath(path, tmp, oldpath, PATH_MAX);
goto begin;
case SEL_HELP:
show_help(path);
break;
case SEL_RUN:
run = xgetenv(env, run);
spawn(run, NULL, NULL, path, F_NORMAL | F_MARKER);
/* Repopulate as directory content may have changed */
goto begin;
case SEL_RUNARG:
run = xgetenv(env, run);
spawn(run, dents[cur].name, NULL, path, F_NORMAL);
break;
}
/* Screensaver */
if (idletimeout != 0 && idle == idletimeout) {
idle = 0;
spawn(player, "", "screensaver", NULL, F_NORMAL | F_SIGINT);
}
}
}
static void
usage(void)
{
printf("usage: nnn [-c N] [-e] [-i] [-l] [-p nlay] [-S]\n\
[-v] [-h] [PATH]\n\n\
The missing terminal file browser for X.\n\n\
positional arguments:\n\
PATH directory to open [default: current dir]\n\n\
optional arguments:\n\
-c N specify dir color, disables if N>7\n\
-e use exiftool instead of mediainfo\n\
-i start in navigate-as-you-type mode\n\
-l start in light mode (fewer details)\n\
-p nlay path to custom nlay\n\
-S start in disk usage analyzer mode\n\
-v show program version and exit\n\
-h show this help and exit\n\n\
Version: %s\n\
License: BSD 2-Clause\n\
Webpage: https://github.com/jarun/nnn\n", VERSION);
exit(0);
}
int
main(int argc, char *argv[])
{
static char cwd[PATH_MAX];
char *ipath, *ifilter, *bmstr;
int opt;
/* Confirm we are in a terminal */
if (!isatty(0) || !isatty(1)) {
fprintf(stderr, "stdin or stdout is not a tty\n");
exit(1);
}
while ((opt = getopt(argc, argv, "Slic:ep:vh")) != -1) {
switch (opt) {
case 'S':
cfg.blkorder = 1;
break;
case 'l':
cfg.showdetail = 0;
printptr = &printent;
break;
case 'i':
cfg.filtermode = 1;
break;
case 'c':
color = (uchar)atoi(optarg);
if (color > 7)
cfg.showcolor = 0;
break;
case 'e':
metaviewer = utils[3];
break;
case 'p':
player = optarg;
break;
case 'v':
printf("%s\n", VERSION);
return 0;
case 'h': // fallthrough
default:
usage();
}
}
if (argc == optind) {
/* Start in the current directory */
ipath = getcwd(cwd, PATH_MAX);
if (ipath == NULL)
ipath = "/";
} else {
ipath = realpath(argv[optind], cwd);
if (!ipath) {
fprintf(stderr, "%s: no such dir\n", argv[optind]);
exit(1);
}
}
/* Increase current open file descriptor limit */
open_max = max_openfds();
if (getuid() == 0)
cfg.showhidden = 1;
initfilter(cfg.showhidden, &ifilter);
#ifdef LINUX_INOTIFY
/* Initialize inotify */
inotify_fd = inotify_init1(IN_NONBLOCK);
if (inotify_fd < 0) {
fprintf(stderr, "Cannot initialize inotify: %s\n", strerror(errno));
exit(1);
}
#elif defined(BSD_KQUEUE)
kq = kqueue();
if (kq < 0) {
fprintf(stderr, "Cannot initialize kqueue: %s\n", strerror(errno));
exit(1);
}
gtimeout.tv_sec = 0;
gtimeout.tv_nsec = 50; /* 50 ns delay */
#endif
/* Parse bookmarks string, if available */
bmstr = getenv("NNN_BMS");
if (bmstr)
parsebmstr(bmstr);
/* Edit text in EDITOR, if opted */
if (getenv("NNN_USE_EDITOR"))
editor = xgetenv("EDITOR", "vi");
/* Set metadata viewer if not set */
if (!metaviewer)
metaviewer = utils[2];
/* Set player if not set already */
if (!player)
player = utils[1];
/* Get the desktop file browser, if set */
desktop_manager = getenv("NNN_DE_FILE_MANAGER");
/* Get screensaver wait time, if set; copier used as tmp var */
copier = getenv("NNN_IDLE_TIMEOUT");
if (copier)
idletimeout = abs(atoi(copier));
/* Get the default copier, if set */
copier = getenv("NNN_COPIER");
signal(SIGINT, SIG_IGN);
/* Test initial path */
if (!xdiraccess(ipath)) {
fprintf(stderr, "%s: %s\n", ipath, strerror(errno));
exit(1);
}
/* Set locale */
setlocale(LC_ALL, "");
#ifdef DEBUGMODE
enabledbg();
#endif
initcurses();
browse(ipath, ifilter);
exitcurses();
#ifdef LINUX_INOTIFY
/* Shutdown inotify */
if (inotify_wd >= 0)
inotify_rm_watch(inotify_fd, inotify_wd);
close(inotify_fd);
#elif defined(BSD_KQUEUE)
if (event_fd >= 0)
close(event_fd);
close(kq);
#endif
#ifdef DEBUGMODE
disabledbg();
#endif
exit(0);
}