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nnn.c
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nnn.c
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/*
* BSD 2-Clause License
*
* Copyright (C) 2014-2016, Lazaros Koromilas <lostd@2f30.org>
* Copyright (C) 2014-2016, Dimitris Papastamos <sin@2f30.org>
* Copyright (C) 2016-2023, Arun Prakash Jana <engineerarun@gmail.com>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* * Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* * Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#if defined(__linux__) || defined(MINGW) || defined(__MINGW32__) \
|| defined(__MINGW64__) || defined(__CYGWIN__)
#ifndef _GNU_SOURCE
#define _GNU_SOURCE
#endif
#if defined(__arm__) || defined(__i386__)
#define _FILE_OFFSET_BITS 64 /* Support large files on 32-bit */
#endif
#if defined(__linux__)
#include <sys/inotify.h>
#define LINUX_INOTIFY
#endif
#if !defined(__GLIBC__)
#include <sys/types.h>
#endif
#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
#elif defined(__HAIKU__)
#include "../misc/haiku/haiku_interop.h"
#define HAIKU_NM
#else
#include <sys/sysmacros.h>
#endif
#include <sys/wait.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__) || defined(__sun)
#ifndef _XOPEN_SOURCE_EXTENDED
#define _XOPEN_SOURCE_EXTENDED
#endif
#endif
#ifndef __USE_XOPEN /* Fix wcswidth() failure, ncursesw/curses.h includes whcar.h on Ubuntu 14.04 */
#define __USE_XOPEN
#endif
#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <fts.h>
#include <libgen.h>
#include <limits.h>
#ifndef NOLC
#include <locale.h>
#endif
#include <pthread.h>
#include <stdio.h>
#ifndef NORL
#include <readline/history.h>
#include <readline/readline.h>
#endif
#ifdef PCRE
#include <pcre.h>
#else
#include <regex.h>
#endif
#include <signal.h>
#include <stdarg.h>
#include <stdlib.h>
#include <string.h>
#include <strings.h>
#include <time.h>
#include <unistd.h>
#include <stddef.h>
#include <stdalign.h>
#ifndef __USE_XOPEN_EXTENDED
#define __USE_XOPEN_EXTENDED 1
#endif
#include <ftw.h>
#include <pwd.h>
#include <grp.h>
#ifdef MACOS_BELOW_1012
#include "../misc/macos-legacy/mach_gettime.h"
#endif
#if !defined(alloca) && defined(__GNUC__)
/*
* GCC doesn't expand alloca() to __builtin_alloca() in standards mode
* (-std=...) and not all standard libraries do or supply it, e.g.
* NetBSD/arm64 so explicitly use the builtin.
*/
#define alloca(size) __builtin_alloca(size)
#endif
#include "nnn.h"
#include "dbg.h"
#if defined(ICONS_IN_TERM) || defined(NERD) || defined(EMOJI)
#define ICONS_ENABLED
#include ICONS_INCLUDE
#include "icons-hash.c"
#include "icons.h"
#endif
#ifdef TOURBIN_QSORT
#include "qsort.h"
#endif
/* Macro definitions */
#define VERSION "4.8"
#define GENERAL_INFO "BSD 2-Clause\nhttps://github.com/jarun/nnn"
#ifndef NOSSN
#define SESSIONS_VERSION 1
#endif
#ifndef S_BLKSIZE
#define S_BLKSIZE 512 /* S_BLKSIZE is missing on Android NDK (Termux) */
#endif
/*
* NAME_MAX and PATH_MAX may not exist, e.g. with dirent.c_name being a
* flexible array on Illumos. Use somewhat accommodating fallback values.
*/
#ifndef NAME_MAX
#define NAME_MAX 255
#endif
#ifndef PATH_MAX
#define PATH_MAX 4096
#endif
#define _ABSSUB(N, M) (((N) <= (M)) ? ((M) - (N)) : ((N) - (M)))
#define ELEMENTS(x) (sizeof(x) / sizeof(*(x)))
#undef MIN
#define MIN(x, y) ((x) < (y) ? (x) : (y))
#undef MAX
#define MAX(x, y) ((x) > (y) ? (x) : (y))
#define ISODD(x) ((x) & 1)
#define ISBLANK(x) ((x) == ' ' || (x) == '\t')
#define TOUPPER(ch) (((ch) >= 'a' && (ch) <= 'z') ? ((ch) - 'a' + 'A') : (ch))
#define TOLOWER(ch) (((ch) >= 'A' && (ch) <= 'Z') ? ((ch) - 'A' + 'a') : (ch))
#define ISUPPER_(ch) ((ch) >= 'A' && (ch) <= 'Z')
#define ISLOWER_(ch) ((ch) >= 'a' && (ch) <= 'z')
#define CMD_LEN_MAX (PATH_MAX + ((NAME_MAX + 1) << 1))
#define ALIGN_UP(x, A) ((((x) + (A) - 1) / (A)) * (A))
#define READLINE_MAX 256
#define FILTER '/'
#define RFILTER '\\'
#define CASE ':'
#define MSGWAIT '$'
#define SELECT ' '
#define PROMPT ">>> "
#define REGEX_MAX 48
#define ENTRY_INCR 64 /* Number of dir 'entry' structures to allocate per shot */
#define NAMEBUF_INCR 0x800 /* 64 dir entries at once, avg. 32 chars per file name = 64*32B = 2KB */
#define DESCRIPTOR_LEN 32
#define _ALIGNMENT 0x10 /* 16-byte alignment */
#define _ALIGNMENT_MASK 0xF
#define TMP_LEN_MAX 64
#define DOT_FILTER_LEN 7
#define ASCII_MAX 128
#define EXEC_ARGS_MAX 10
#define LIST_FILES_MAX (1 << 14) /* Support listing 16K files */
#define LIST_INPUT_MAX ((size_t)LIST_FILES_MAX * PATH_MAX)
#define SCROLLOFF 3
#define COLOR_256 256
#define CREATE_NEW_KEY (-1)
/* Time intervals */
#define DBLCLK_INTERVAL_NS (400000000)
#define XDELAY_INTERVAL_MS (350000) /* 350 ms delay */
#ifndef CTX8
#define CTX_MAX 4
#else
#define CTX_MAX 8
#endif
#ifndef SED
/* BSDs or Solaris or SunOS */
#if defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__) || defined(__APPLE__) || defined(sun) || defined(__sun)
#define SED "gsed"
#else
#define SED "sed"
#endif
#endif
/* Large selection threshold */
#ifndef LARGESEL
#define LARGESEL 1000
#endif
#define MIN_DISPLAY_COL (CTX_MAX * 2)
#define ARCHIVE_CMD_LEN 16
#define BLK_SHIFT_512 9
/* Detect hardlinks in du */
#define HASH_BITS (0xFFFFFF)
#define HASH_OCTETS (HASH_BITS >> 6) /* 2^6 = 64 */
/* Entry flags */
#define DIR_OR_DIRLNK 0x01
#define HARD_LINK 0x02
#define SYM_ORPHAN 0x04
#define FILE_MISSING 0x08
#define FILE_SELECTED 0x10
#define FILE_SCANNED 0x20
#define FILE_YOUNG 0x40
/* Macros to define process spawn behaviour as flags */
#define F_NONE 0x00 /* no flag set */
#define F_MULTI 0x01 /* first arg can be combination of args; to be used with F_NORMAL */
#define F_NOWAIT 0x02 /* don't wait for child process (e.g. file manager) */
#define F_NOTRACE 0x04 /* suppress stdout and stderr (no traces) */
#define F_NORMAL 0x08 /* spawn child process in non-curses regular CLI mode */
#define F_CONFIRM 0x10 /* run command - show results before exit (must have F_NORMAL) */
#define F_CHKRTN 0x20 /* wait for user prompt if cmd returns failure status */
#define F_NOSTDIN 0x40 /* suppress stdin */
#define F_PAGE 0x80 /* page output in run-cmd-as-plugin mode */
#define F_TTY 0x100 /* Force stdout to go to tty if redirected to a non-tty */
#define F_CLI (F_NORMAL | F_MULTI)
#define F_SILENT (F_CLI | F_NOTRACE)
/* Version compare macros */
/*
* states: S_N: normal, S_I: comparing integral part, S_F: comparing
* fractional parts, S_Z: idem but with leading Zeroes only
*/
#define S_N 0x0
#define S_I 0x3
#define S_F 0x6
#define S_Z 0x9
/* result_type: VCMP: return diff; VLEN: compare using len_diff/diff */
#define VCMP 2
#define VLEN 3
/* Volume info */
#define VFS_AVAIL 0
#define VFS_USED 1
#define VFS_SIZE 2
/* TYPE DEFINITIONS */
typedef unsigned int uint_t;
typedef unsigned char uchar_t;
typedef unsigned short ushort_t;
typedef unsigned long long ullong_t;
/* STRUCTURES */
/* Directory entry */
typedef struct entry {
char *name; /* 8 bytes */
time_t sec; /* 8 bytes */
uint_t nsec; /* 4 bytes (enough to store nanosec) */
mode_t mode; /* 4 bytes */
off_t size; /* 8 bytes */
struct {
ullong_t blocks : 40; /* 5 bytes (enough for 512 TiB in 512B blocks allocated) */
ullong_t nlen : 16; /* 2 bytes (length of file name) */
ullong_t flags : 8; /* 1 byte (flags specific to the file) */
};
#ifndef NOUG
uid_t uid; /* 4 bytes */
gid_t gid; /* 4 bytes */
#endif
} *pEntry;
/* Selection marker */
typedef struct {
char *startpos;
size_t len;
} selmark;
/* Key-value pairs from env */
typedef struct {
int key;
int off;
} kv;
typedef struct {
#ifdef PCRE
const pcre *pcrex;
#else
const regex_t *regex;
#endif
const char *str;
} fltrexp_t;
/*
* Settings
*/
typedef struct {
uint_t filtermode : 1; /* Set to enter filter mode */
uint_t timeorder : 1; /* Set to sort by time */
uint_t sizeorder : 1; /* Set to sort by file size */
uint_t apparentsz : 1; /* Set to sort by apparent size (disk usage) */
uint_t blkorder : 1; /* Set to sort by blocks used (disk usage) */
uint_t extnorder : 1; /* Order by extension */
uint_t showhidden : 1; /* Set to show hidden files */
uint_t reserved0 : 1;
uint_t showdetail : 1; /* Clear to show lesser file info */
uint_t ctxactive : 1; /* Context active or not */
uint_t reverse : 1; /* Reverse sort */
uint_t version : 1; /* Version sort */
uint_t reserved1 : 1;
/* The following settings are global */
uint_t curctx : 3; /* Current context number */
uint_t prefersel : 1; /* Prefer selection over current, if exists */
uint_t fileinfo : 1; /* Show file information on hover */
uint_t nonavopen : 1; /* Open file on right arrow or `l` */
uint_t autoenter : 1; /* auto-enter dir in type-to-nav mode */
uint_t reserved2 : 1;
uint_t useeditor : 1; /* Use VISUAL to open text files */
uint_t reserved3 : 3;
uint_t regex : 1; /* Use regex filters */
uint_t x11 : 1; /* Copy to system clipboard, show notis, xterm title */
uint_t timetype : 2; /* Time sort type (0: access, 1: change, 2: modification) */
uint_t cliopener : 1; /* All-CLI app opener */
uint_t waitedit : 1; /* For ops that can't be detached, used EDITOR */
uint_t rollover : 1; /* Roll over at edges */
} settings;
/* Non-persistent program-internal states (alphabeical order) */
typedef struct {
uint_t autofifo : 1; /* Auto-create NNN_FIFO */
uint_t autonext : 1; /* Auto-advance on file open */
uint_t dircolor : 1; /* Current status of dir color */
uint_t dirctx : 1; /* Show dirs in context color */
uint_t duinit : 1; /* Initialize disk usage */
uint_t fifomode : 1; /* FIFO notify mode: 0: preview, 1: explorer */
uint_t forcequit : 1; /* Do not prompt on quit */
uint_t initfile : 1; /* Positional arg is a file */
uint_t interrupt : 1; /* Program received an interrupt */
uint_t move : 1; /* Move operation */
uint_t oldcolor : 1; /* Use older colorscheme */
uint_t picked : 1; /* Plugin has picked files */
uint_t picker : 1; /* Write selection to user-specified file */
uint_t pluginit : 1; /* Plugin framework initialized */
uint_t prstssn : 1; /* Persistent session */
uint_t rangesel : 1; /* Range selection on */
uint_t runctx : 3; /* The context in which plugin is to be run */
uint_t runplugin : 1; /* Choose plugin mode */
uint_t selbm : 1; /* Select a bookmark from bookmarks directory */
uint_t selmode : 1; /* Set when selecting files */
uint_t stayonsel : 1; /* Disable auto-advance on selection */
uint_t trash : 2; /* Trash method 0: rm -rf, 1: trash-cli, 2: gio trash */
uint_t uidgid : 1; /* Show owner and group info */
uint_t usebsdtar : 1; /* Use bsdtar as default archive utility */
uint_t reserved : 5; /* Adjust when adding/removing a field */
} runstate;
/* Contexts or workspaces */
typedef struct {
char c_path[PATH_MAX]; /* Current dir */
char c_last[PATH_MAX]; /* Last visited dir */
char c_name[NAME_MAX + 1]; /* Current file name */
char c_fltr[REGEX_MAX]; /* Current filter */
settings c_cfg; /* Current configuration */
uint_t color; /* Color code for directories */
} context;
#ifndef NOSSN
typedef struct {
size_t ver;
size_t pathln[CTX_MAX];
size_t lastln[CTX_MAX];
size_t nameln[CTX_MAX];
size_t fltrln[CTX_MAX];
} session_header_t;
#endif
/* GLOBALS */
/* Configuration, contexts */
static settings cfg = {
.ctxactive = 1,
.autoenter = 1,
.timetype = 2, /* T_MOD */
.rollover = 1,
};
alignas(max_align_t) static context g_ctx[CTX_MAX];
static int ndents, cur, last, curscroll, last_curscroll, total_dents = ENTRY_INCR, scroll_lines = 1;
static int nselected;
#ifndef NOFIFO
static int fifofd = -1;
#endif
static time_t gtimesecs;
static uint_t idletimeout, selbufpos, selbuflen;
static ushort_t xlines, xcols;
static ushort_t idle;
static uchar_t maxbm, maxplug, maxorder;
static uchar_t cfgsort[CTX_MAX + 1];
static char *bmstr;
static char *pluginstr;
static char *orderstr;
static char *opener;
static char *editor;
static char *enveditor;
static char *pager;
static char *shell;
static char *home;
static char *initpath;
static char *cfgpath;
static char *selpath;
static char *listpath;
static char *listroot;
static char *plgpath;
static char *pnamebuf, *pselbuf, *findselpos;
static char *mark;
#ifndef NOX11
static char hostname[_POSIX_HOST_NAME_MAX + 1];
#endif
#ifndef NOFIFO
static char *fifopath;
#endif
static char *lastcmd;
static ullong_t *ihashbmp;
static struct entry *pdents;
static blkcnt_t dir_blocks;
static kv *bookmark;
static kv *plug;
static kv *order;
static uchar_t tmpfplen, homelen;
static uchar_t blk_shift = BLK_SHIFT_512;
#ifndef NOMOUSE
static int middle_click_key;
#endif
#ifdef PCRE
static pcre *archive_pcre;
#else
static regex_t archive_re;
#endif
/* pthread related */
#define NUM_DU_THREADS (4) /* Can use sysconf(_SC_NPROCESSORS_ONLN) */
#define DU_TEST (((node->fts_info & FTS_F) && \
(sb->st_nlink <= 1 || test_set_bit((uint_t)sb->st_ino))) || node->fts_info & FTS_DP)
static int threadbmp = -1; /* Has 1 in the bit position for idle threads */
static volatile int active_threads;
static pthread_mutex_t running_mutex = PTHREAD_MUTEX_INITIALIZER;
static pthread_mutex_t hardlink_mutex = PTHREAD_MUTEX_INITIALIZER;
static ullong_t *core_files;
static blkcnt_t *core_blocks;
static ullong_t num_files;
typedef struct {
char path[PATH_MAX];
int entnum;
ushort_t core;
bool mntpoint;
} thread_data;
static thread_data *core_data;
/* Retain old signal handlers */
static struct sigaction oldsighup;
static struct sigaction oldsigtstp;
static struct sigaction oldsigwinch;
/* For use in functions which are isolated and don't return the buffer */
alignas(max_align_t) static char g_buf[CMD_LEN_MAX];
/* For use as a scratch buffer in selection manipulation */
alignas(max_align_t) static char g_sel[PATH_MAX];
/* Buffer to store tmp file path to show selection, file stats and help */
alignas(max_align_t) static char g_tmpfpath[TMP_LEN_MAX];
/* Buffer to store plugins control pipe location */
alignas(max_align_t) static char g_pipepath[TMP_LEN_MAX];
/* Non-persistent runtime states */
static runstate g_state;
/* Options to identify file MIME */
#if defined(__APPLE__)
#define FILE_MIME_OPTS "-bIL"
#elif !defined(__sun) /* no MIME option for 'file' */
#define FILE_MIME_OPTS "-biL"
#endif
/* Macros for utilities */
#define UTIL_OPENER 0
#define UTIL_ATOOL 1
#define UTIL_BSDTAR 2
#define UTIL_UNZIP 3
#define UTIL_TAR 4
#define UTIL_LOCKER 5
#define UTIL_LAUNCH 6
#define UTIL_SH_EXEC 7
#define UTIL_BASH 8
#define UTIL_SSHFS 9
#define UTIL_RCLONE 10
#define UTIL_VI 11
#define UTIL_LESS 12
#define UTIL_SH 13
#define UTIL_FZF 14
#define UTIL_NTFY 15
#define UTIL_CBCP 16
#define UTIL_NMV 17
#define UTIL_TRASH_CLI 18
#define UTIL_GIO_TRASH 19
#define UTIL_RM_RF 20
#define UTIL_ARCHMNT 21
/* Utilities to open files, run actions */
static char * const utils[] = {
#ifdef __APPLE__
"/usr/bin/open",
#elif defined __CYGWIN__
"cygstart",
#elif defined __HAIKU__
"open",
#else
"xdg-open",
#endif
"atool",
"bsdtar",
"unzip",
"tar",
#ifdef __APPLE__
"bashlock",
#elif defined(__FreeBSD__) || defined(__OpenBSD__) || defined(__NetBSD__)
"lock",
#elif defined __HAIKU__
"peaclock",
#else
"vlock",
#endif
"launch",
"sh -c",
"bash",
"sshfs",
"rclone",
"vi",
"less",
"sh",
"fzf",
".ntfy",
".cbcp",
".nmv",
"trash-put",
"gio trash",
"rm -rf",
"archivemount",
};
/* Common strings */
#define MSG_ZERO 0 /* Unused */
#define MSG_0_ENTRIES 1
#define STR_TMPFILE 2
#define MSG_0_SELECTED 3
#define MSG_CANCEL 4
#define MSG_FAILED 5
#define MSG_SSN_NAME 6
#define MSG_CP_MV_AS 7
#define MSG_CUR_SEL_OPTS 8
#define MSG_FORCE_RM 9
#define MSG_SIZE_LIMIT 10
#define MSG_NEW_OPTS 11
#define MSG_CLI_MODE 12
#define MSG_OVERWRITE 13
#define MSG_SSN_OPTS 14
#define MSG_QUIT_ALL 15
#define MSG_HOSTNAME 16
#define MSG_ARCHIVE_NAME 17
#define MSG_OPEN_WITH 18
#define MSG_NEW_PATH 19
#define MSG_LINK_PREFIX 20
#define MSG_COPY_NAME 21
#define MSG_ENTER 22
#define MSG_SEL_MISSING 23
#define MSG_ACCESS 24
#define MSG_EMPTY_FILE 25
#define MSG_UNSUPPORTED 26
#define MSG_NOT_SET 27
#define MSG_EXISTS 28
#define MSG_FEW_COLUMNS 29
#define MSG_REMOTE_OPTS 30
#define MSG_RCLONE_DELAY 31
#define MSG_APP_NAME 32
#define MSG_ARCHIVE_OPTS 33
#define MSG_KEYS 34
#define MSG_INVALID_REG 35
#define MSG_ORDER 36
#define MSG_LAZY 37
#define MSG_FIRST 38
#define MSG_RM_TMP 39
#define MSG_INVALID_KEY 40
#define MSG_NOCHANGE 41
#define MSG_DIR_CHANGED 42
#define MSG_BM_NAME 43
#define MSG_FILE_LIMIT 44
static const char * const messages[] = {
"",
"0 entries",
"/.nnnXXXXXX",
"0 selected",
"cancelled",
"failed!",
"session name: ",
"'c'p/'m'v as?",
"'c'urrent/'s'el?",
"%s %s? [Esc cancels]",
"size limit exceeded",
"['f'ile]/'d'ir/'s'ym/'h'ard?",
"['g'ui]/'c'li?",
"overwrite?",
"'s'ave/'l'oad/'r'estore?",
"Quit all contexts?",
"remote name (- for hovered): ",
"archive [path/]name: ",
"open with: ",
"[path/]name: ",
"link prefix [@ for none]: ",
"copy [path/]name: ",
"\n'Enter' to continue",
"open failed",
"dir inaccessible",
"empty! edit/open with",
"?",
"not set",
"entry exists",
"too few cols!",
"'s'shfs/'r'clone?",
"refresh if slow",
"app: ",
"['l's]/'o'pen/e'x'tract/'m'nt?",
"keys:",
"invalid regex",
"'a'u/'d'u/'e'xt/'r'ev/'s'z/'t'm/'v'er/'c'lr/'^T'?",
"unmount failed! try lazy?",
"first file (\')/char?",
"remove tmp file?",
"invalid key",
"unchanged",
"dir changed, range sel off",
"name: ",
"file limit exceeded",
};
/* Supported configuration environment variables */
#define NNN_OPTS 0
#define NNN_BMS 1
#define NNN_PLUG 2
#define NNN_OPENER 3
#define NNN_COLORS 4
#define NNN_FCOLORS 5
#define NNNLVL 6
#define NNN_PIPE 7
#define NNN_MCLICK 8
#define NNN_SEL 9
#define NNN_ARCHIVE 10
#define NNN_ORDER 11
#define NNN_HELP 12 /* strings end here */
#define NNN_TRASH 13 /* flags begin here */
static const char * const env_cfg[] = {
"NNN_OPTS",
"NNN_BMS",
"NNN_PLUG",
"NNN_OPENER",
"NNN_COLORS",
"NNN_FCOLORS",
"NNNLVL",
"NNN_PIPE",
"NNN_MCLICK",
"NNN_SEL",
"NNN_ARCHIVE",
"NNN_ORDER",
"NNN_HELP",
"NNN_TRASH",
};
/* Required environment variables */
#define ENV_SHELL 0
#define ENV_VISUAL 1
#define ENV_EDITOR 2
#define ENV_PAGER 3
#define ENV_NCUR 4
static const char * const envs[] = {
"SHELL",
"VISUAL",
"EDITOR",
"PAGER",
"nnn",
};
/* Time type used */
#define T_ACCESS 0
#define T_CHANGE 1
#define T_MOD 2
#define PROGRESS_CP "cpg -giRp"
#define PROGRESS_MV "mvg -gi"
static char cp[sizeof PROGRESS_CP] = "cp -iRp";
static char mv[sizeof PROGRESS_MV] = "mv -i";
/* Archive commands */
static char * const archive_cmd[] = {"atool -a", "bsdtar -acvf", "zip -r", "tar -acvf"};
/* Tokens used for path creation */
#define TOK_BM 0
#define TOK_SSN 1
#define TOK_MNT 2
#define TOK_PLG 3
static const char * const toks[] = {
"bookmarks",
"sessions",
"mounts",
"plugins", /* must be the last entry */
};
/* Patterns */
#define P_CPMVFMT 0
#define P_CPMVRNM 1
#define P_ARCHIVE 2
#define P_REPLACE 3
#define P_ARCHIVE_CMD 4
static const char * const patterns[] = {
SED" -i 's|^\\(\\(.*/\\)\\(.*\\)$\\)|#\\1\\n\\3|' %s",
SED" 's|^\\([^#/][^/]\\?.*\\)$|%s/\\1|;s|^#\\(/.*\\)$|\\1|' "
"%s | tr '\\n' '\\0' | xargs -0 -n2 sh -c '%s \"$0\" \"$@\" < /dev/tty'",
"\\.(bz|bz2|gz|tar|taz|tbz|tbz2|tgz|z|zip)$", /* Basic formats that don't need external tools */
SED" -i 's|^%s\\(.*\\)$|%s\\1|' %s",
"xargs -0 %s %s < '%s'",
};
/* Colors */
#define C_BLK (CTX_MAX + 1) /* Block device: DarkSeaGreen1 */
#define C_CHR (C_BLK + 1) /* Character device: Yellow1 */
#define C_DIR (C_CHR + 1) /* Directory: DeepSkyBlue1 */
#define C_EXE (C_DIR + 1) /* Executable file: Green1 */
#define C_FIL (C_EXE + 1) /* Regular file: Normal */
#define C_HRD (C_FIL + 1) /* Hard link: Plum4 */
#define C_LNK (C_HRD + 1) /* Symbolic link: Cyan1 */
#define C_MIS (C_LNK + 1) /* Missing file OR file details: Grey62 */
#define C_ORP (C_MIS + 1) /* Orphaned symlink: DeepPink1 */
#define C_PIP (C_ORP + 1) /* Named pipe (FIFO): Orange1 */
#define C_SOC (C_PIP + 1) /* Socket: MediumOrchid1 */
#define C_UND (C_SOC + 1) /* Unknown OR 0B regular/exe file: Red1 */
static char gcolors[] = "c1e2272e006033f7c6d6abc4";
static uint_t fcolors[C_UND + 1] = {0};
/* Event handling */
#ifdef LINUX_INOTIFY
#define NUM_EVENT_SLOTS 32 /* Make room for 32 events */
#define EVENT_SIZE (sizeof(struct inotify_event))
#define EVENT_BUF_LEN (EVENT_SIZE * NUM_EVENT_SLOTS)
static int inotify_fd, inotify_wd = -1;
static uint_t 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)
#define NUM_EVENT_SLOTS 1
#define NUM_EVENT_FDS 1
static int kq, event_fd = -1;
static struct kevent events_to_monitor[NUM_EVENT_FDS];
static uint_t KQUEUE_FFLAGS = NOTE_DELETE | NOTE_EXTEND | NOTE_LINK
| NOTE_RENAME | NOTE_REVOKE | NOTE_WRITE;
static struct timespec gtimeout;
#elif defined(HAIKU_NM)
static bool haiku_nm_active = FALSE;
static haiku_nm_h haiku_hnd;
#endif
/* Function macros */
#define tolastln() move(xlines - 1, 0)
#define tocursor() move(cur + 2 - curscroll, 0)
#define exitcurses() endwin()
#define printwarn(presel) printwait(strerror(errno), presel)
#define istopdir(path) ((path)[1] == '\0' && (path)[0] == '/')
#define copycurname() xstrsncpy(lastname, ndents ? pdents[cur].name : "\0", NAME_MAX + 1)
#define settimeout() timeout(1000)
#define cleartimeout() timeout(-1)
#define errexit() printerr(__LINE__)
#define setdirwatch() (cfg.filtermode ? (presel = FILTER) : (watch = TRUE))
#define filterset() (g_ctx[cfg.curctx].c_fltr[1])
/* We don't care about the return value from strcmp() */
#define xstrcmp(a, b) (*(a) != *(b) ? -1 : strcmp((a), (b)))
/* A faster version of xisdigit */
#define xisdigit(c) ((unsigned int) (c) - '0' <= 9)
#define xerror() perror(xitoa(__LINE__))
#ifdef TOURBIN_QSORT
#define ENTLESS(i, j) (entrycmpfn(pdents + (i), pdents + (j)) < 0)
#define ENTSWAP(i, j) (swap_ent((i), (j)))
#define ENTSORT(pdents, ndents, entrycmpfn) QSORT((ndents), ENTLESS, ENTSWAP)
#else
#define ENTSORT(pdents, ndents, entrycmpfn) qsort((pdents), (ndents), sizeof(*(pdents)), (entrycmpfn))
#endif
/* Forward declarations */
static void redraw(char *path);
static int spawn(char *file, char *arg1, char *arg2, char *arg3, ushort_t flag);
static void move_cursor(int target, int ignore_scrolloff);
static char *load_input(int fd, const char *path);
static int set_sort_flags(int r);
static void statusbar(char *path);
static bool get_output(char *file, char *arg1, char *arg2, int fdout, bool page);
#ifndef NOFIFO
static void notify_fifo(bool force);
#endif
/* Functions */
static void sigint_handler(int sig)
{
(void) sig;
g_state.interrupt = 1;
}
static void clean_exit_sighandler(int sig)
{
(void) sig;
exitcurses();
/* This triggers cleanup() thanks to atexit() */
exit(EXIT_SUCCESS);
}
static char *xitoa(uint_t val)
{
static char dst[32] = {'\0'};
static const char digits[201] =
"0001020304050607080910111213141516171819"
"2021222324252627282930313233343536373839"
"4041424344454647484950515253545556575859"
"6061626364656667686970717273747576777879"
"8081828384858687888990919293949596979899";
uint_t next = 30, quo, i;
while (val >= 100) {
quo = val / 100;
i = (val - (quo * 100)) * 2;
val = quo;
dst[next] = digits[i + 1];
dst[--next] = digits[i];
--next;
}
/* Handle last 1-2 digits */
if (val < 10)
dst[next] = '0' + val;
else {
i = val * 2;
dst[next] = digits[i + 1];
dst[--next] = digits[i];
}
return &dst[next];
}
/* Return the integer value of a char representing HEX */
static uchar_t xchartohex(uchar_t c)
{
if (xisdigit(c))
return c - '0';
if (c >= 'a' && c <= 'f')
return c - 'a' + 10;
if (c >= 'A' && c <= 'F')
return c - 'A' + 10;
return c;
}
/*
* Source: https://elixir.bootlin.com/linux/latest/source/arch/alpha/include/asm/bitops.h
*/
static bool test_set_bit(uint_t nr)
{
nr &= HASH_BITS;
pthread_mutex_lock(&hardlink_mutex);
ullong_t *m = ((ullong_t *)ihashbmp) + (nr >> 6);
if (*m & (1 << (nr & 63))) {
pthread_mutex_unlock(&hardlink_mutex);
return FALSE;
}
*m |= 1 << (nr & 63);
pthread_mutex_unlock(&hardlink_mutex);
return TRUE;
}
#ifndef __APPLE__
/* Increase the limit on open file descriptors, if possible */
static void max_openfds(void)
{
struct rlimit rl;
if (!getrlimit(RLIMIT_NOFILE, &rl))
if (rl.rlim_cur < rl.rlim_max) {
rl.rlim_cur = rl.rlim_max;
setrlimit(RLIMIT_NOFILE, &rl);
}
}
#endif
/*
* Wrapper to realloc()
* Frees current memory if realloc() fails and returns NULL.
*
* The *alloc() family returns aligned address: https://man7.org/linux/man-pages/man3/malloc.3.html
*/
static void *xrealloc(void *pcur, size_t len)
{
void *pmem = realloc(pcur, len);
if (!pmem)
free(pcur);
return pmem;
}
/*
* 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 xstrsncpy(char *restrict dst, const char *restrict src, size_t n)
{
char *end = memccpy(dst, src, '\0', n);
if (!end) {
dst[n - 1] = '\0'; // NOLINT
end = dst + n; /* If we return n here, binary size increases due to auto-inlining */
}
return end - dst;
}
static inline size_t xstrlen(const char *restrict s)
{
#if !defined(__GLIBC__)
return strlen(s); // NOLINT
#else
return (char *)rawmemchr(s, '\0') - s; // NOLINT
#endif
}
static char *xstrdup(const char *restrict s)
{
size_t len = xstrlen(s) + 1;
char *ptr = malloc(len);
return ptr ? memcpy(ptr, s, len) : NULL;
}
static bool is_suffix(const char *restrict str, const char *restrict suffix)
{
if (!str || !suffix)
return FALSE;
size_t lenstr = xstrlen(str);
size_t lensuffix = xstrlen(suffix);
if (lensuffix > lenstr)
return FALSE;