Add CLI options for all UI settings

+ reorder manpage a bit, since the scan options tend to be more relevant
than all those UI options.

Again, these are mainly useful with a config file.

ncdu.pod

@@ -75,6 +75,58 @@ using 'm' and 'M', respectively.
 
 =back
 
+=head2 Scan Options
+
+These options affect the scanning progress, and have no effect when importing
+directory information from a file.
+
+=over
+
+=item -x, --one-file-system
+
+Do not cross filesystem boundaries, i.e. only count files and directories on
+the same filesystem as the directory being scanned.
+
+=item --cross-file-system
+
+Do cross filesystem boundaries. This is the default, but can be specified to
+overrule a previously given C<-x>.
+
+=item --exclude I<PATTERN>
+
+Exclude files that match I<PATTERN>. The files will still be displayed by
+default, but are not counted towards the disk usage statistics. This argument
+can be added multiple times to add more patterns.
+
+=item -X I<FILE>, --exclude-from I<FILE>
+
+Exclude files that match any pattern in I<FILE>. Patterns should be separated
+by a newline.
+
+=item --include-caches, --exclude-caches
+
+Include (default) or exclude directories containing CACHEDIR.TAG.  The
+directories will still be displayed, but their contents will not be scanned or
+counted towards the disk usage statistics.
+L<http://www.brynosaurus.com/cachedir/>
+
+=item -L, --follow-symlinks, --no-follow-symlinks
+
+Follow (or not) symlinks and count the size of the file they point to. As of
+ncdu 1.14, this option will not follow symlinks to directories and will count
+each symlinked file as a unique file (i.e. unlike how hard links are handled).
+This is subject to change in later versions.
+
+=item --include-kernfs, --exclude-kernfs
+
+(Linux only) Include (default) or exclude Linux pseudo filesystems, e.g. /proc
+(procfs), /sys (sysfs).
+
+The complete list of currently known pseudo filesystems is: binfmt, bpf, cgroup,
+cgroup2, debug, devpts, proc, pstore, security, selinux, sys, trace.
+
+=back
+
 =head2 Interface options
 
 =over
@@ -140,11 +192,54 @@ List sizes using base 10 prefixes, that is, powers of 1000 (KB, MB, etc), as
 defined in the International System of Units (SI), instead of the usual base 2
 prefixes, that is, powers of 1024 (KiB, MiB, etc).
 
+=item --disk-usage, --apparent-size
+
+Select whether to display disk usage (default) or apparent sizes. Can also be
+toggled in the browser with the 'a' key.
+
+=item --show-hidden, --hide-hidden
+
+Show (default) or hide "hidden" and excluded files. Can also be toggled in the
+browser with the 'e' key.
+
+=item --show-itemcount, --hide-itemcount
+
+Show or hide (default) the item counts column. Can also be toggled in the
+browser with the 'c' key.
+
+=item --show-mtime, --hide-mtime
+
+Show or hide (default) the last modification time column. Can also be toggled
+in the browser with the 'm' key. This option is ignored when not in extended
+mode (see C<-e>).
+
+=item --show-graph, --hide-graph
+
+Show (default) or hide the relative size bar column. Can also be toggled in the
+browser with the 'g' key.
+
+=item --show-percent, --hide-percent
+
+Show (default) or hide the relative size percent column. Can also be toggled in
+the browser with the 'g' key.
+
+=item --shared-column I<OPTION>
+
+Set to I<off> to disable the shared size column for directories, I<shared>
+(default) to display shared directory sizes as a separate column or I<unique>
+to display unique directory sizes as a separate column. These options can also
+be cycled through in the browser with the 'u' key.
+
 =item --confirm-quit, --no-confirm-quit
 
 Require a confirmation before quitting ncdu. Very helpful when you accidentally
 press 'q' during or after a very long scan.
 
+=item --confirm-delete, --no-confirm-delete
+
+Require a confirmation before deleting a file or directory. Enabled by default,
+but can be disabled if you're absolutely sure you won't accidentally press 'd'.
+
 =item --color I<SCHEME>
 
 Select a color scheme. The following schemes are recognized: I<off> to disable
@@ -156,58 +251,6 @@ The default is I<dark-bg> unless the C<NO_COLOR> environment variable is set.
 
 =back
 
-=head2 Scan Options
-
-These options affect the scanning progress, and have no effect when importing
-directory information from a file.
-
-=over
-
-=item -x, --one-file-system
-
-Do not cross filesystem boundaries, i.e. only count files and directories on
-the same filesystem as the directory being scanned.
-
-=item --cross-file-system
-
-Do cross filesystem boundaries. This is the default, but can be specified to
-overrule a previously given C<-x>.
-
-=item --exclude I<PATTERN>
-
-Exclude files that match I<PATTERN>. The files will still be displayed by
-default, but are not counted towards the disk usage statistics. This argument
-can be added multiple times to add more patterns.
-
-=item -X I<FILE>, --exclude-from I<FILE>
-
-Exclude files that match any pattern in I<FILE>. Patterns should be separated
-by a newline.
-
-=item --include-caches, --exclude-caches
-
-Include (default) or exclude directories containing CACHEDIR.TAG.  The
-directories will still be displayed, but their contents will not be scanned or
-counted towards the disk usage statistics.
-L<http://www.brynosaurus.com/cachedir/>
-
-=item -L, --follow-symlinks, --no-follow-symlinks
-
-Follow (or not) symlinks and count the size of the file they point to. As of
-ncdu 1.14, this option will not follow symlinks to directories and will count
-each symlinked file as a unique file (i.e. unlike how hard links are handled).
-This is subject to change in later versions.
-
-=item --include-kernfs, --exclude-kernfs
-
-(Linux only) Include (default) or exclude Linux pseudo filesystems, e.g. /proc
-(procfs), /sys (sysfs).
-
-The complete list of currently known pseudo filesystems is: binfmt, bpf, cgroup,
-cgroup2, debug, devpts, proc, pstore, security, selinux, sys, trace.
-
-=back
-
 
 =head1 KEYS
 

src/browser.zig

@@ -202,21 +202,19 @@ const Row = struct {
     }
 
     fn graph(self: *Self) void {
-        if (main.config.show_graph == .off or self.col + 20 > ui.cols) return;
+        if ((!main.config.show_graph and !main.config.show_percent) or self.col + 20 > ui.cols) return;
 
         const bar_size = std.math.max(ui.cols/7, 10);
-        defer self.col += switch (main.config.show_graph) {
+        defer self.col += 3
-            .off => unreachable,
+            + (if (main.config.show_graph) bar_size else 0)
-            .graph => bar_size + 3,
+            + (if (main.config.show_percent) @as(u32, 6) else 0)
-            .percent => 9,
+            + (if (main.config.show_graph and main.config.show_percent) @as(u32, 1) else 0);
-            .both => bar_size + 10,
-        };
         const item = self.item orelse return;
 
         ui.move(self.row, self.col);
         self.bg.fg(.default);
         ui.addch('[');
-        if (main.config.show_graph == .both or main.config.show_graph == .percent) {
+        if (main.config.show_percent) {
             self.bg.fg(.num);
             ui.addprint("{d:>5.1}", .{ 100*
                 if (main.config.show_blocks) @intToFloat(f32, item.blocks) / @intToFloat(f32, std.math.max(1, dir_parent.entry.blocks))
@@ -225,8 +223,8 @@ const Row = struct {
             self.bg.fg(.default);
             ui.addch('%');
         }
-        if (main.config.show_graph == .both) ui.addch(' ');
+        if (main.config.show_graph and main.config.show_percent) ui.addch(' ');
-        if (main.config.show_graph == .both or main.config.show_graph == .graph) {
+        if (main.config.show_graph) {
             const perblock = std.math.divFloor(u64, if (main.config.show_blocks) dir_max_blocks else dir_max_size, bar_size) catch unreachable;
             const num = if (main.config.show_blocks) item.blocks else item.size;
             var i: u32 = 0;
@@ -920,11 +918,11 @@ pub fn keyInput(ch: i32) void {
         // Display settings
         'c' => main.config.show_items = !main.config.show_items,
         'm' => if (main.config.extended) { main.config.show_mtime = !main.config.show_mtime; },
-        'g' => main.config.show_graph = switch (main.config.show_graph) {
+        'g' => {
-            .off => .graph,
+            if      (!main.config.show_graph and !main.config.show_percent) { main.config.show_graph = true;  main.config.show_percent = false; }
-            .graph => .percent,
+            else if ( main.config.show_graph and !main.config.show_percent) { main.config.show_graph = false; main.config.show_percent = true; }
-            .percent => .both,
+            else if (!main.config.show_graph and  main.config.show_percent) { main.config.show_graph = true;  main.config.show_percent = true; }
-            .both => .off,
+            else if ( main.config.show_graph and  main.config.show_percent) { main.config.show_graph = false; main.config.show_percent = false; }
         },
         'u' => main.config.show_shared = switch (main.config.show_shared) {
             .off => .shared,

src/main.zig

@@ -60,7 +60,8 @@ pub const config = struct {
     pub var show_shared: enum { off, shared, unique } = .shared;
     pub var show_items: bool = false;
     pub var show_mtime: bool = false;
-    pub var show_graph: enum { off, graph, percent, both } = .graph;
+    pub var show_graph: bool = true;
+    pub var show_percent: bool = false;
     pub var sort_col: SortCol = .blocks;
     pub var sort_order: SortOrder = .desc;
     pub var sort_dirsfirst: bool = false;
@@ -294,6 +295,24 @@ pub fn main() void {
         else if(opt.is("--disable-delete"))  { has_can_delete = true;  config.can_delete = false; }
         else if(opt.is("--enable-refresh"))  { has_can_refresh = true; config.can_refresh = true; }
         else if(opt.is("--disable-refresh")) { has_can_refresh = true; config.can_refresh = false; }
+        else if(opt.is("--show-hidden")) config.show_hidden = true
+        else if(opt.is("--hide-hidden")) config.show_hidden = false
+        else if(opt.is("--show-itemcount")) config.show_items = true
+        else if(opt.is("--hide-itemcount")) config.show_items = false
+        else if(opt.is("--show-mtime")) config.show_mtime = true
+        else if(opt.is("--hide-mtime")) config.show_mtime = false
+        else if(opt.is("--show-graph")) config.show_graph = true
+        else if(opt.is("--hide-graph")) config.show_graph = false
+        else if(opt.is("--show-percent")) config.show_percent = true
+        else if(opt.is("--hide-percent")) config.show_percent = false
+        else if(opt.is("--shared-column")) {
+            const val = args.arg();
+            if (std.mem.eql(u8, val, "off")) config.show_shared = .off
+            else if (std.mem.eql(u8, val, "shared")) config.show_shared = .shared
+            else if (std.mem.eql(u8, val, "unique")) config.show_shared = .unique
+            else ui.die("Unknown --shared-column option: {s}.\n", .{val});
+        } else if(opt.is("--apparent-size")) config.show_blocks = false
+        else if(opt.is("--disk-usage")) config.show_blocks = true
         else if(opt.is("-0")) { has_scan_ui = true; config.scan_ui = .none; }
         else if(opt.is("-1")) { has_scan_ui = true; config.scan_ui = .line; }
         else if(opt.is("-2")) { has_scan_ui = true; config.scan_ui = .full; }
@@ -315,6 +334,8 @@ pub fn main() void {
         else if(opt.is("--include-kernfs")) config.exclude_kernfs = false
         else if(opt.is("--confirm-quit")) config.confirm_quit = true
         else if(opt.is("--no-confirm-quit")) config.confirm_quit = false
+        else if(opt.is("--confirm-delete")) config.confirm_delete = true
+        else if(opt.is("--no-confirm-delete")) config.confirm_delete = false
         else if(opt.is("--color")) {
             const val = args.arg();
             if (std.mem.eql(u8, val, "off")) config.ui_color = .off