add '-H' option

lib/colorls/core.rb

@@ -139,6 +139,7 @@ module ColorLS
       @long = mode == :long
       @show_group = long_style_options.key?(:show_group) ? long_style_options[:show_group] : true
       @show_user = long_style_options.key?(:show_user) ? long_style_options[:show_user] : true
+      @show_symbol_dest = long_style_options.key?(:show_symbol_dest) ? long_style_options[:show_symbol_dest] : false
     end
 
     def init_git_status(show_git)
@@ -333,6 +334,15 @@ module ColorLS
       end
     end
 
+    def update_content_if_show_symbol_dest(content, show_symbol_dest_flag)
+      return content unless show_symbol_dest_flag
+      return content unless content.symlink?
+      return content if content.link_target.nil?
+      return content if content.dead?
+
+      FileInfo.info(content.link_target)
+    end
+
     def out_encode(str)
       str.encode(Encoding.default_external, undef: :replace, replace: '')
     end
@@ -346,7 +356,10 @@ module ColorLS
       entry = @icons ? "#{out_encode(logo)}  #{out_encode(name)}" : out_encode(name).to_s
       entry = entry.bright if !content.directory? && content.executable?
 
-      "#{inode(content)} #{long_info(content)} #{git_info(content)} #{entry.colorize(color)}#{symlink_info(content)}"
+      symlink_info_string = symlink_info(content)
+      content = update_content_if_show_symbol_dest(content,@show_symbol_dest)
+
+      "#{inode(content)} #{long_info(content)} #{git_info(content)} #{entry.colorize(color)}#{symlink_info_string}"
     end
 
     def ls_line(chunk, widths)

lib/colorls/flags.rb

@@ -183,13 +183,26 @@ module ColorLS
         show_group: true,
         show_user: true,
         time_style: '',
-        hard_links_count: true
+        hard_links_count: true,
+        show_symbol_dest: false
       }
     end
 
     def add_long_style_options(options)
       long_style_options = default_long_style_options
       options.on('-l', '--long', 'use a long listing format') { @opts[:mode] = :long }
+      long_style_options = set_long_style_user_and_group_options(options, long_style_options)
+      options.on('--time-style=FORMAT', String, 'use time display format') do |time_style|
+        long_style_options[:time_style] = time_style
+      end
+      options.on('--no-hardlinks', 'show no hard links count in a long listing') do
+        long_style_options[:hard_links_count] = false
+      end
+      long_style_options = get_long_style_symlink_options(options, long_style_options)
+      @opts[:long_style_options] = long_style_options
+    end
+
+    def set_long_style_user_and_group_options(options, long_style_options)
       options.on('-o', 'use a long listing format without group information') do
         @opts[:mode] = :long
         long_style_options[:show_group] = false
@@ -201,13 +214,14 @@ module ColorLS
       options.on('-G', '--no-group', 'show no group information in a long listing') do
         long_style_options[:show_group] = false
       end
-      options.on('--time-style=FORMAT', String, 'use time display format') do |time_style|
+      long_style_options
-        long_style_options[:time_style] = time_style
+    end
+
+    def get_long_style_symlink_options(options, long_style_options)
+      options.on('-H', 'show information on the destination of symbolic links') do
+        long_style_options[:show_symbol_dest] = true
       end
-      options.on('--no-hardlinks', 'show no hard links count in a long listing') do
+      long_style_options
-        long_style_options[:hard_links_count] = false
-      end
-      @opts[:long_style_options] = long_style_options
     end
 
     def add_general_options(options)

spec/color_ls/flags_spec.rb

@@ -613,4 +613,41 @@ RSpec.describe ColorLS::Flags do
       expect { subject }.not_to output(/987/).to_stdout
     end
   end
+
+  context 'with -H flag in a listing format' do
+    let(:args) { ['-l', '-H', "#{FIXTURES}/a.txt"] }
+
+    before do
+      file_info = instance_double(
+        ColorLS::FileInfo,
+        group: 'sys',
+        mtime: Time.now,
+        directory?: false,
+        owner: 'user',
+        name: 'a.txt',
+        show: 'a.txt',
+        nlink: 1,
+        size: 128,
+        blockdev?: false,
+        chardev?: false,
+        socket?: false,
+        symlink?: true,
+        link_target: "#{FIXTURES}/z.txt",
+        dead?: false,
+        executable?: false
+      )
+
+      allow(ColorLS::FileInfo).to receive(:new).and_call_original
+      allow(ColorLS::FileInfo).to receive(:new).with(
+        path: File.join(FIXTURES, 'a.txt'),
+        parent: FIXTURES,
+        name: 'a.txt',
+        link_info: true
+      ) { file_info }
+    end
+
+    it 'show information on the destination of symbolic links' do
+      expect { subject }.not_to output(/128/).to_stdout
+    end
+  end
 end