nvim: better statusline

.config/nvim/lua/plugins/configs/statusline.lua

@@ -3,41 +3,125 @@ if not present then
     return
 end
 
-local left_pad = ''
-local right_pad = ''
+
+-- Thanks to rockyzhang24 (github.com/rockyzhang24)
+
+local function simplifiedMode(str)
+    return '  ' .. (str == 'V-LINE' and 'VL' or (str == 'V-BLOCK' and 'VB' or str:sub(1, 1)))
+end
+
+-- For location, show total lines
+local function customLocation(str)
+    return string.gsub(str, '%w+', '%1' .. '/%%L', 1)
+end
+
+-- For progress, add a fancy icon
+local function customProgress(str)
+    return ' ' .. str
+end
+
+-- For filename, show the filename and the filesize
+local function fileNameAndSize(str)
+    -- For doc, only show filename
+    if string.find(str, '.*/doc/.*%.txt') then
+        str = vim.fn.expand('%:t')
+    end
+    local size = require('lualine.components.filesize')()
+    return size == '' and str or str .. ' [' .. size .. ']'
+end
 
 lualine.setup({
     options = {
         icons_enabled = true,
         theme = 'auto',
-        component_separators = '|',
-        section_separators = { left = left_pad, right = right_pad },
+        -- component_separators = { left = '', right = '' },
+        -- section_separators = { left = '', right = '' },
+        -- component_separators = { left = '', right = '' },
+        -- section_separators = { left = '', right = '' },
+        component_separators = { left = '', right = '' },
+        section_separators = { left = '', right = '' },
         disabled_filetypes = {},
         always_divide_middle = true,
-        globalstatus = true,
+        globalstatus = true, -- requires neovim 0.7 or highter
     },
     sections = {
-        lualine_a = { 'mode' },
-        lualine_b = { 'branch', 'diff', 'diagnostics' },
+        -- Left
+        lualine_a = {
+            {
+                'mode',
+                fmt = simplifiedMode,
+            },
+        },
+        lualine_b = {
+            {
+                'branch',
+                icon = '',
+            },
+            {
+                'diff',
+                symbols = { added = '+', modified = '~', removed = '-' },
+                -- symbols = { added = ' ', modified = ' ', removed = ' ' },
+            },
+            {
+                'diagnostics',
+                sources = { 'nvim_diagnostic' },
+                -- symbols = { error = ' ', warn = ' ', info = ' ', hint = ' ' },
+                symbols = { error = ' ', warn = ' ', info = ' ', hint = ' ' },
+            },
+        },
         lualine_c = {
             {
                 'filename',
-                file_status = true,
-                path = 1,
+                path = 3,
+                symbols = {
+                    modified = '[+]',
+                    readonly = '[]',
+                    unnamed = '[No Name]',
+                },
+                fmt = fileNameAndSize,
+            },
+        },
+
+        -- Right
+        lualine_x = {
+            'progress',
+            'encoding',
+            'fileformat',
+            'filetype',
+        },
+        lualine_y = {
+            {
+                'location',
+                fmt = customLocation,
+            },
+        },
+        lualine_z = {
+            {
+                'progress',
+                fmt = customProgress,
             },
         },
-        lualine_x = { 'encoding', 'fileformat', 'filetype' },
-        lualine_y = { 'progress' },
-        lualine_z = { 'location' },
     },
     inactive_sections = {
         lualine_a = {},
         lualine_b = {},
         lualine_c = { 'filename' },
-        lualine_x = { 'location' },
+        lualine_x = {
+            {
+                'location',
+                fmt = customLocation,
+            },
+        },
         lualine_y = {},
         lualine_z = {},
     },
     tabline = {},
-    extensions = { 'fugitive', 'fzf' },
+    extensions = {
+        'aerial',
+        'fugitive',
+        'nvim-tree',
+        'neo-tree',
+        'quickfix',
+        'toggleterm',
+    },
 })