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sfm.c
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/* See LICENSE file for copyright and license details. */
#if defined(__linux__)
#define _GNU_SOURCE
#elif defined(__APPLE__)
#define _DARWIN_C_SOURCE
#elif defined(__FreeBSD__)
#define __BSD_VISIBLE 1
#endif
#include <sys/types.h>
#include <sys/resource.h>
#include <sys/stat.h>
#include <sys/time.h>
#include <sys/wait.h>
#if defined(__linux__)
#include <sys/inotify.h>
#elif defined(__FreeBSD__) || defined(__NetBSD__) || defined(__OpenBSD__) || \
defined(__APPLE__)
#include <sys/event.h>
#endif
#include <ctype.h>
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <grp.h>
#include <libgen.h>
#include <pthread.h>
#include <pwd.h>
#include <signal.h>
#include <stdarg.h>
#include <stdint.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
#include "termbox.h"
#include "util.h"
/* macros */
#define MAX_P 4096
#define MAX_N 255
#define MAX_USRI 32
#define MAX_EXT 4
#define MAX_STATUS 255
#define MAX_LINE 4096
#define MAX_USRN 32
#define MAX_GRPN 32
#define MAX_DTF 32
#define CURSOR(x) (x)->direntr[(x)->hdir - 1]
/* typedef */
typedef struct {
char name[MAX_N];
gid_t group;
mode_t mode;
off_t size;
time_t dt;
uid_t user;
} Entry;
typedef struct {
uint16_t fg;
uint16_t bg;
} Cpair;
typedef struct {
int pane_id;
char dirn[MAX_P]; // dir name cwd
char *filter;
Entry *direntr; // dir entries
int dirc; // dir entries sum
int hdir; // highlighted dir
int x_srt;
int x_end;
int firstrow;
int parent_firstrow;
int parent_row; // FIX
Cpair dircol;
int inotify_wd;
int event_fd;
} Pane;
typedef struct {
const char **ext;
size_t exlen;
const void *v;
size_t vlen;
} Rule;
typedef union {
uint16_t key; /* one of the TB_KEY_* constants */
uint32_t ch; /* unicode character */
} Evkey;
typedef union {
int i;
const void *v;
} Arg;
typedef struct {
const Evkey evkey;
void (*func)(const Arg *);
const Arg arg;
} Key;
/* function declarations */
static void print_tb(const char *, int, int, uint16_t, uint16_t);
static void printf_tb(int, int, Cpair, const char *, ...);
static void print_status(Cpair, const char *, ...);
static void print_xstatus(char, int);
static void print_error(char *);
static void print_prompt(char *);
static void print_info(Pane *, char *);
static void print_row(Pane *, size_t, Cpair);
static void clear(int, int, int, uint16_t);
static void clear_status(void);
static void clear_pane(Pane *);
static void add_hi(Pane *, size_t);
static void rm_hi(Pane *, size_t);
static int check_dir(char *);
static int sort_name(const void *const, const void *const);
static void get_dirp(char *);
static char *get_ext(char *);
static int get_fdt(char *, time_t);
static char *get_fgrp(gid_t);
static char *get_fperm(mode_t);
static char *get_fsize(off_t);
static char *get_fullpath(char *, char *);
static char *get_fusr(uid_t);
static void get_dirsize(char *, off_t *);
static void get_hicol(Cpair *, mode_t);
static void delent(const Arg *arg);
static void calcdir(const Arg *arg);
static void crnd(const Arg *arg);
static void crnf(const Arg *arg);
static void mv_ver(const Arg *arg);
static void mvbk(const Arg *arg);
static void mvbtm(const Arg *arg);
static void mvfwd(const Arg *arg);
static void mvtop(const Arg *arg);
static void bkmrk(const Arg *arg);
static int get_usrinput(char *, size_t, const char *, ...);
static int frules(char *);
static int spawn(const void *, size_t, const void *, size_t, char *, int);
static int opnf(char *);
static int fsev_init(void);
static int addwatch(Pane *);
static int read_events(void);
static void rmwatch(Pane *);
static void fsev_shdn(void);
static void toggle_df(const Arg *arg);
static void start_filter(const Arg *arg);
static void start_vmode(const Arg *arg);
static void exit_vmode(const Arg *arg);
static void start_bkmrk(const Arg *arg);
static void exit_bkmrk(const Arg *arg);
static void start_change(const Arg *arg);
static void exit_change(const Arg *arg);
static void selup(const Arg *arg);
static void seldwn(const Arg *arg);
static void selall(const Arg *arg);
static void selref(void);
static void selynk(const Arg *arg);
static void selcalc(void);
static void paste(const Arg *arg);
static void selmv(const Arg *arg);
static void seldel(const Arg *arg);
static void init_files(void);
static void free_files(void);
static void yank(const Arg *arg);
static void rname(const Arg *arg);
static void chngo(const Arg *arg);
static void chngm(const Arg *arg);
static void chngf(const Arg *arg);
static void dupl(const Arg *arg);
static void switch_pane(const Arg *arg);
static void quit(const Arg *arg);
static void grabkeys(struct tb_event *, Key *, size_t);
static void *read_th(void *arg);
static void start_ev(void);
static void refresh_pane(Pane *);
static void set_direntr(Pane *, struct dirent *, DIR *, char *);
static int listdir(Pane *);
static void t_resize(void);
static void get_shell(void);
static void opnsh(const Arg *arg);
static void drgon(const Arg *arg);
static void set_panes(void);
static void draw_frame(void);
static void refresh(const Arg *arg);
static void start(void);
/* global variables */
static pthread_t fsev_thread;
static Pane panes[2];
static Pane *cpane;
static int pane_idx;
static char *editor[2];
static char fed[] = "vi";
static char *shell[2];
static char sh[] = "/bin/sh";
static int theight, twidth, hwidth, scrheight;
static int *sel_indexes;
static size_t sel_len = 0;
static char **sel_files;
static int cont_vmode = 0;
static int cont_change = 0;
static int cont_bkmrk = 0;
static pid_t fork_pid = 0, main_pid;
#if defined(_SYS_INOTIFY_H)
#define READEVSZ 16
static int inotify_fd;
#elif defined(_SYS_EVENT_H_)
#define READEVSZ 0
static int kq;
struct kevent evlist[2]; /* events we want to monitor */
struct kevent chlist[2]; /* events that were triggered */
static struct timespec gtimeout;
#endif
#if defined(__linux__) || defined(__FreeBSD__)
#define OFF_T "%ld"
#elif defined(__NetBSD__) || defined(__OpenBSD__) || defined(__APPLE__)
#define OFF_T "%lld"
#endif
enum { Left, Right }; /* panes */
enum { Wait, DontWait }; /* spawn forks */
/* configuration, allows nested code to access above variables */
#include "config.h"
/* function implementations */
static void
print_tb(const char *str, int x, int y, uint16_t fg, uint16_t bg)
{
while (*str != '\0') {
uint32_t uni = 0;
str += tb_utf8_char_to_unicode(&uni, str);
tb_change_cell(x, y, uni, fg, bg);
x++;
}
}
static void
printf_tb(int x, int y, Cpair col, const char *fmt, ...)
{
char buf[MAX_LINE];
va_list vl;
va_start(vl, fmt);
(void)vsnprintf(buf, MAX_LINE, fmt, vl);
va_end(vl);
print_tb(buf, x, y, col.fg, col.bg);
}
static void
print_status(Cpair col, const char *fmt, ...)
{
char buf[MAX_STATUS];
va_list vl;
va_start(vl, fmt);
(void)vsnprintf(buf, MAX_STATUS, fmt, vl);
va_end(vl);
clear_status();
print_tb(buf, 1, theight - 1, col.fg, col.bg);
}
static void
print_xstatus(char c, int x)
{
uint32_t uni = 0;
(void)tb_utf8_char_to_unicode(&uni, &c);
tb_change_cell(x, theight - 1, uni, cstatus.fg, cstatus.bg);
}
static void
print_error(char *errmsg)
{
print_status(cerr, errmsg);
}
static void
print_prompt(char *prompt)
{
print_status(cprompt, prompt);
}
static void
print_info(Pane *pane, char *dirsize)
{
char *sz, *ur, *gr, *dt, *prm;
dt = ecalloc(MAX_DTF, sizeof(char));
prm = get_fperm(CURSOR(pane).mode);
ur = get_fusr(CURSOR(pane).user);
gr = get_fgrp(CURSOR(pane).group);
if (get_fdt(dt, CURSOR(pane).dt) < 0)
*dt = '\0';
if (S_ISREG(CURSOR(pane).mode)) {
sz = get_fsize(CURSOR(pane).size);
} else {
if (dirsize == NULL) {
sz = ecalloc(1, sizeof(char));
*sz = '\0';
} else {
sz = dirsize;
}
}
print_status(cstatus, "%02d/%02d %s %s:%s %s %s", pane->hdir,
pane->dirc, prm, ur, gr, dt, sz);
free(prm);
free(ur);
free(gr);
free(dt);
free(sz);
}
static void
print_row(Pane *pane, size_t entpos, Cpair col)
{
int x, y;
char *full_str, *rez_pth;
char lnk_full[MAX_N];
full_str = basename(pane->direntr[entpos].name);
x = pane->x_srt;
y = entpos - pane->firstrow + 1;
if (S_ISLNK(pane->direntr[entpos].mode) != 0) {
rez_pth = ecalloc(MAX_P, sizeof(char));
if (realpath(pane->direntr[entpos].name, rez_pth) != NULL) {
snprintf(
lnk_full, MAX_N, "%s -> %s", full_str, rez_pth);
full_str = lnk_full;
}
free(rez_pth);
}
printf_tb(x, y, col, "%*.*s", ~hwidth, hwidth, full_str);
}
static void
clear(int sx, int ex, int y, uint16_t bg)
{
/* clear line from to */
/* x = line number vertical */
/* y = column number horizontal */
int i;
for (i = sx; i < ex; i++) {
tb_change_cell(i, y, 0x0000, TB_DEFAULT, bg);
}
}
static void
clear_status(void)
{
clear(1, twidth - 1, theight - 1, cstatus.bg);
}
static void
clear_pane(Pane *pane)
{
int i, y;
y = 0, i = 0;
while (i < scrheight) {
clear(pane->x_srt, pane->x_end, y, TB_DEFAULT);
i++;
y++;
}
/* draw top line */
for (y = pane->x_srt; y < pane->x_end; ++y) {
tb_change_cell(y, 0, u_hl, cframe.fg, cframe.bg);
}
}
static void
add_hi(Pane *pane, size_t entpos)
{
Cpair col;
get_hicol(&col, pane->direntr[entpos].mode);
col.fg |= TB_REVERSE | TB_BOLD;
col.bg |= TB_REVERSE;
print_row(pane, entpos, col);
}
static void
rm_hi(Pane *pane, size_t entpos)
{
Cpair col;
get_hicol(&col, pane->direntr[entpos].mode);
print_row(pane, entpos, col);
}
static int
check_dir(char *path)
{
DIR *dir;
dir = opendir(path);
if (dir == NULL) {
if (errno == ENOTDIR) {
return 1;
} else {
return -1;
}
}
if (closedir(dir) < 0)
return -1;
return 0;
}
static int
sort_name(const void *const A, const void *const B)
{
int result;
mode_t data1 = (*(Entry *)A).mode;
mode_t data2 = (*(Entry *)B).mode;
if (data1 < data2) {
return -1;
} else if (data1 == data2) {
result = strncmp((*(Entry *)A).name, (*(Entry *)B).name, MAX_N);
return result;
} else {
return 1;
}
}
static void
get_dirp(char *cdir)
{
int counter, len, i;
counter = 0;
len = strnlen(cdir, MAX_P);
if (len == 1)
return;
for (i = len - 1; i > 1; i--) {
if (cdir[i] == '/')
break;
else
counter++;
}
cdir[len - counter - 1] = '\0';
}
static char *
get_ext(char *str)
{
char *ext;
char dot;
size_t counter, len, i;
dot = '.';
counter = 0;
len = strnlen(str, MAX_N);
for (i = len - 1; i > 0; i--) {
if (str[i] == dot) {
break;
} else {
counter++;
}
}
ext = ecalloc(MAX_EXT + 1, sizeof(char));
strncpy(ext, &str[len - counter], MAX_EXT);
ext[MAX_EXT] = '\0';
for(char *p=ext; *p; p++) {
*p=tolower(*(const unsigned char *)p);
}
return ext;
}
static int
get_fdt(char *result, time_t status)
{
struct tm lt;
localtime_r(&status, <);
return strftime(result, MAX_DTF, dtfmt, <);
}
static char *
get_fgrp(gid_t status)
{
char *result;
struct group *gr;
result = ecalloc(MAX_GRPN, sizeof(char));
gr = getgrgid(status);
if (gr == NULL)
(void)snprintf(result, MAX_GRPN, "%u", status);
else
strncpy(result, gr->gr_name, MAX_GRPN);
result[MAX_GRPN - 1] = '\0';
return result;
}
static char *
get_fperm(mode_t mode)
{
char *buf;
size_t i;
const char chars[] = "rwxrwxrwx";
buf = ecalloc(11, sizeof(char));
if (S_ISDIR(mode))
buf[0] = 'd';
else if (S_ISREG(mode))
buf[0] = '-';
else if (S_ISLNK(mode))
buf[0] = 'l';
else if (S_ISBLK(mode))
buf[0] = 'b';
else if (S_ISCHR(mode))
buf[0] = 'c';
else if (S_ISFIFO(mode))
buf[0] = 'p';
else if (S_ISSOCK(mode))
buf[0] = 's';
else
buf[0] = '?';
for (i = 1; i < 10; i++) {
buf[i] = (mode & (1 << (9 - i))) ? chars[i - 1] : '-';
}
buf[10] = '\0';
return buf;
}
static char *
get_fsize(off_t size)
{
char *result; /* need to be freed */
char unit;
int result_len;
int counter;
counter = 0;
result_len = 6; /* 9999X/0 */
result = ecalloc(result_len, sizeof(char));
while (size >= 1000) {
size /= 1024;
++counter;
}
switch (counter) {
case 0:
unit = 'B';
break;
case 1:
unit = 'K';
break;
case 2:
unit = 'M';
break;
case 3:
unit = 'G';
break;
case 4:
unit = 'T';
break;
default:
unit = '?';
}
if (snprintf(result, result_len, OFF_T "%c", size, unit) < 0)
strncat(result, "???", result_len);
return result;
}
static char *
get_fullpath(char *first, char *second)
{
char *full_path;
full_path = ecalloc(MAX_P, sizeof(char));
if (strncmp(first, "/", MAX_P) == 0)
(void)snprintf(full_path, MAX_P, "/%s", second);
else
(void)snprintf(full_path, MAX_P, "%s/%s", first, second);
return full_path;
}
static char *
get_fusr(uid_t status)
{
char *result;
struct passwd *pw;
result = ecalloc(MAX_USRN, sizeof(char));
pw = getpwuid(status);
if (pw == NULL)
(void)snprintf(result, MAX_USRN, "%u", status);
else
strncpy(result, pw->pw_name, MAX_USRN);
result[MAX_USRN - 1] = '\0';
return result;
}
static void
get_dirsize(char *fullpath, off_t *fullsize)
{
DIR *dir;
char *ent_full;
mode_t mode;
struct dirent *entry;
struct stat status;
dir = opendir(fullpath);
if (dir == NULL) {
return;
}
while ((entry = readdir(dir)) != 0) {
if ((strncmp(entry->d_name, ".", 2) == 0 ||
strncmp(entry->d_name, "..", 3) == 0))
continue;
ent_full = get_fullpath(fullpath, entry->d_name);
if (lstat(ent_full, &status) == 0) {
mode = status.st_mode;
if (S_ISDIR(mode)) {
get_dirsize(ent_full, fullsize);
free(ent_full);
} else {
*fullsize += status.st_size;
free(ent_full);
}
}
}
closedir(dir);
clear_status();
}
static void
get_hicol(Cpair *col, mode_t mode)
{
switch (mode & S_IFMT) {
case S_IFREG:
*col = cfile;
if ((S_IXUSR | S_IXGRP | S_IXOTH) & mode)
*col = cexec;
break;
case S_IFDIR:
*col = cdir;
break;
case S_IFLNK:
*col = clnk;
break;
case S_IFBLK:
*col = cblk;
break;
case S_IFCHR:
*col = cchr;
break;
case S_IFIFO:
*col = cifo;
break;
case S_IFSOCK:
*col = csock;
break;
default:
*col = cother;
break;
}
}
static void
delent(const Arg *arg)
{
if (cpane->dirc < 1)
return;
char *inp_conf;
inp_conf = ecalloc(delconf_len, sizeof(char));
if ((get_usrinput(inp_conf, delconf_len, "delete files(s) (%s) ?",
delconf) < 0) ||
(strncmp(inp_conf, delconf, delconf_len) != 0)) {
free(inp_conf);
return; /* canceled by user or wrong inp_conf */
}
free(inp_conf);
char *tmp[1];
tmp[0] = CURSOR(cpane).name;
if (spawn(rm_cmd, rm_cmd_len, tmp, 1, NULL, DontWait) < 0) {
print_error(strerror(errno));
return;
}
}
static void
calcdir(const Arg *arg)
{
if (cpane->dirc < 1)
return;
if (!S_ISDIR(CURSOR(cpane).mode))
return;
off_t *fullsize;
char *csize;
fullsize = ecalloc(1, sizeof(off_t));
get_dirsize(CURSOR(cpane).name, fullsize);
csize = get_fsize(*fullsize);
CURSOR(cpane).size = *fullsize;
print_info(cpane, csize);
free(fullsize);
}
static void
crnd(const Arg *arg)
{
char *user_input, *path;
user_input = ecalloc(MAX_USRI, sizeof(char));
if (get_usrinput(user_input, MAX_USRI, "new dir") < 0) {
free(user_input);
return;
}
path = ecalloc(MAX_P, sizeof(char));
if (snprintf(path, MAX_P, "%s/%s", cpane->dirn, user_input) < 0) {
free(user_input);
free(path);
return;
}
PERROR(mkdir(path, ndir_perm) < 0);
free(user_input);
free(path);
}
static void
crnf(const Arg *arg)
{
char *user_input, *path;
int rf;
user_input = ecalloc(MAX_USRI, sizeof(char));
if (get_usrinput(user_input, MAX_USRI, "new file") < 0) {
free(user_input);
return;
}
path = ecalloc(MAX_P, sizeof(char));
if (snprintf(path, MAX_P, "%s/%s", cpane->dirn, user_input) < 0) {
free(user_input);
free(path);
return;
}
rf = open(path, O_CREAT | O_EXCL, nf_perm);
if (rf < 0)
print_error(strerror(errno));
else if (close(rf) < 0)
print_error(strerror(errno));
free(user_input);
free(path);
}
static void
mv_ver(const Arg *arg)
{
if (cpane->dirc < 1)
return;
if (cpane->hdir - arg->i < 1) /* first line */
return;
if (cpane->hdir - arg->i > cpane->dirc) /* last line */
return;
if (cpane->firstrow > 0 && arg->i > 0 &&
cpane->hdir <= (cpane->firstrow + arg->i)) { /* scroll up */
cpane->firstrow = cpane->firstrow - arg->i;
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = cpane->hdir - arg->i;
refresh_pane(cpane);
add_hi(cpane, cpane->hdir - 1);
return;
}
if (cpane->hdir - cpane->firstrow >= scrheight + arg->i &&
arg->i < 0) { /* scroll down */
cpane->firstrow = cpane->firstrow - arg->i;
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = cpane->hdir - arg->i;
refresh_pane(cpane);
add_hi(cpane, cpane->hdir - 1);
return;
}
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = cpane->hdir - arg->i;
add_hi(cpane, cpane->hdir - 1);
print_info(cpane, NULL);
}
static void
mvbk(const Arg *arg)
{
if (cpane->dirn[0] == '/' && cpane->dirn[1] == '\0') { /* cwd = / */
return;
}
get_dirp(cpane->dirn);
if (check_dir(cpane->dirn) < 0) {
print_error(strerror(errno));
return;
}
cpane->firstrow = cpane->parent_firstrow;
cpane->hdir = cpane->parent_row;
PERROR(listdir(cpane) < 0);
cpane->parent_firstrow = 0;
cpane->parent_row = 1;
}
static void
mvbtm(const Arg *arg)
{
if (cpane->dirc < 1)
return;
if (cpane->dirc > scrheight) {
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = cpane->dirc;
cpane->firstrow = cpane->dirc - scrheight + 1;
refresh_pane(cpane);
add_hi(cpane, cpane->hdir - 1);
} else {
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = cpane->dirc;
add_hi(cpane, cpane->hdir - 1);
}
print_info(cpane, NULL);
}
static void
mvfwd(const Arg *arg)
{
if (cpane->dirc < 1)
return;
int s;
switch (check_dir(CURSOR(cpane).name)) {
case 0:
strncpy(cpane->dirn, CURSOR(cpane).name, MAX_P);
cpane->parent_row = cpane->hdir;
cpane->parent_firstrow = cpane->firstrow;
cpane->hdir = 1;
cpane->firstrow = 0;
PERROR(listdir(cpane) < 0);
break;
case 1: /* not a directory open file */
tb_shutdown();
s = opnf(CURSOR(cpane).name);
if (tb_init() != 0)
die("tb_init");
t_resize();
if (s < 0)
print_error("process failed non-zero exit");
break;
case -1: /* failed to open directory */
print_error(strerror(errno));
}
}
static void
mvtop(const Arg *arg)
{
if (cpane->dirc < 1)
return;
if (cpane->dirc > scrheight) {
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = 1;
cpane->firstrow = 0;
refresh_pane(cpane);
add_hi(cpane, cpane->hdir - 1);
} else {
rm_hi(cpane, cpane->hdir - 1);
cpane->hdir = 1;
add_hi(cpane, cpane->hdir - 1);
print_info(cpane, NULL);
}
}
static void
bkmrk(const Arg *arg)
{
if (check_dir((char *)arg->v) != 0) {
print_error(strerror(errno));
return;
}
strncpy(cpane->dirn, (char *)arg->v, MAX_P);
cpane->firstrow = 0;
cpane->parent_row = 1;
cpane->hdir = 1;
PERROR(listdir(cpane) < 0);
if (cont_bkmrk >= 0)
exit_bkmrk(NULL);
}
static int
get_usrinput(char *result, size_t max_chars, const char *fmt, ...)
{
char msg[MAX_N];
size_t i, cpos, startat;
struct tb_event fev;
va_list vl;
i = 0;
cpos = 1;
va_start(vl, fmt);
startat = vsnprintf(msg, MAX_N, fmt, vl) + 1;
va_end(vl);
clear_status();
print_tb(msg, 1, theight - 1, cprompt.fg, cprompt.bg);
tb_set_cursor(startat + 1, theight - 1);
tb_present();
while (tb_poll_event(&fev) != 0) {
switch (fev.type) {
case TB_EVENT_KEY:
if (fev.key == TB_KEY_ESC) {
tb_set_cursor(-1, -1);
clear_status();
return -1;
}
if (fev.key == TB_KEY_BACKSPACE ||
fev.key == TB_KEY_BACKSPACE2) {
if (BETWEEN(cpos, 2, max_chars)) {
result[i - 1] = '\0';
cpos--;
i--;
print_xstatus(' ', startat + cpos);
tb_set_cursor(
startat + cpos, theight - 1);
}
} else if (fev.key == TB_KEY_ENTER) {
tb_set_cursor(-1, -1);
result[cpos - 1] = '\0';
return 0;
} else if (fev.key) { /* disable other TB_KEY_* */
break;
} else {
if (cpos < max_chars) {
print_xstatus(
(char)fev.ch, (startat + cpos));
result[i] = (char)fev.ch;
tb_set_cursor((startat + cpos + 1),
theight - 1);
cpos++;
i++;
}
}
tb_present();
break;
case TB_EVENT_RESIZE:
t_resize();
clear_status();
print_tb(msg, 1, theight - 1, cprompt.fg, cprompt.bg);
print_tb(result, startat + 1, theight - 1, cstatus.fg,
cstatus.bg);
tb_present();
break;