Support archive listing and extraction

README.md

@@ -67,7 +67,7 @@ Cool things you can do with `nnn`:
 - copy absolute file path to clipboard, spawn a terminal and use the file path
 - navigate instantly using shortcuts like `~`, `-`, `&` or handy bookmarks
 - use `cd .....` at chdir prompt to go to a parent directory
-- see detailed file stats or mediainfo information
+- detailed file stats, media info, list and extract archives
 - open a (supported) archive in vim to view its contents
 - pin a directory you may need to revisit and jump to it anytime
 - set timeout to lock the current terminal
@@ -113,6 +113,7 @@ Have fun with it! PRs are welcome. Check out [#1](https://github.com/jarun/nnn/i
   - Invoke file path copier (*easy* shell integration)
   - Change directory at exit (*easy* shell integration)
   - Open any file in EDITOR (fallback vi) or PAGER (fallback less)
+  - List and extract archives (needs atool)
   - Open current directory in a custom GUI file browser
   - Monitor directory changes
   - Terminal screensaver (default vlock, customizable) integration
@@ -276,6 +277,7 @@ The following abbreviations are used in the detail view:
         export NNN_DE_FILE_MANAGER=thunar
         export NNN_DE_FILE_MANAGER=nautilus
 - [mediainfo](https://mediaarea.net/en/MediaInfo) (or exiftool, if specified) is required to view media information
+- [atool](http://www.nongnu.org/atool/) is required to list and extract archives
 
 #### Help
 

nnn.1

@@ -93,6 +93,10 @@ Open current entry in EDITOR (fallback vi)
 Open directory in NNN_DE_FILE_MANAGER
 .It Ic p
 Open current entry in PAGER (fallback less)
+.It Ic f
+List files in archive
+.It Ic ^X
+Extract archive in current directory
 .It Ic ^K
 Invoke file path copier
 .It Ic ^L

nnn.c

@@ -251,7 +251,8 @@ static char * const utils[] = {
 #else
 	"/usr/bin/xdg-open",
 #endif
-	"nlay"
+	"nlay",
+	"atool"
 };
 
 /* Common message strings */
@@ -1625,6 +1626,23 @@ show_mediainfo(char *fpath, char *arg)
 	return 0;
 }
 
+static int
+handle_archive(char *fpath, char *arg, char *dir)
+{
+	if (!get_output(g_buf, MAX_CMD_LEN, "which", utils[4], NULL, 0))
+		return -1;
+
+	if (arg[1] == 'x')
+		spawn(utils[4], arg, fpath, dir, F_NORMAL);
+	else {
+		exitcurses();
+		get_output(NULL, 0, utils[4], arg, fpath, 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
@@ -1674,6 +1692,8 @@ show_help(char *path)
              "ee | Edit entry in EDITOR\n"
              "eo | Open dir in file manager\n"
              "ep | Open entry in PAGER\n"
+             "ef | List archive\n"
+            "d^X | Extract archive\n"
             "d^K | Invoke file path copier\n"
             "d^L | Redraw, clear prompt\n"
              "e? | Help, settings\n"
@@ -2550,13 +2570,24 @@ nochange:
 				}
 			}
 			break;
+		case SEL_LIST: // fallthrough
+		case SEL_EXTRACT: // fallthrough
 		case SEL_MEDIA: // fallthrough
 		case SEL_FMEDIA:
 			if (ndents > 0) {
 				mkpath(path, dents[cur].name, oldpath, PATH_MAX);
 
-				if (show_mediainfo(oldpath, run) == -1) {
+				if (sel == SEL_MEDIA || sel == SEL_FMEDIA)
+					r = show_mediainfo(oldpath, run);
+				else
+					r = handle_archive(oldpath, run, path);
+
+				if (r == -1) {
+					if (sel == SEL_MEDIA || sel == SEL_FMEDIA)
 						sprintf(g_buf, "%s missing", utils[cfg.metaviewer]);
+					else
+						sprintf(g_buf, "%s missing", utils[4]);
+
 					printmsg(g_buf);
 					goto nochange;
 				}

nnn.h

@@ -29,6 +29,8 @@ enum action {
 	SEL_MEDIA,
 	SEL_FMEDIA,
 	SEL_DFB,
+	SEL_LIST,
+	SEL_EXTRACT,
 	SEL_FSIZE,
 	SEL_BSIZE,
 	SEL_MTIME,
@@ -45,7 +47,7 @@ enum action {
 struct key {
 	int sym;         /* Key pressed */
 	enum action act; /* Action */
-	char *run;       /* Program to run */
+	char *run;       /* Program to run or program option */
 	char *env;       /* Environment variable to run */
 };
 
@@ -131,6 +133,10 @@ static struct key bindings[] = {
 	{ 'M',            SEL_FMEDIA,    "-f",   "" },
 	/* Open dir in desktop file manager */
 	{ 'o',            SEL_DFB,       "",     "" },
+	/* List archive */
+	{ 'f',            SEL_LIST,      "-l",   "" },
+	/* Extract archive */
+	{ CONTROL('X'),   SEL_EXTRACT,   "-x",   "" },
 	/* Toggle sort by size */
 	{ 's',            SEL_FSIZE,     "",     "" },
 	/* Sort by total block count including dir contents */