Include evil_lualine config in examples/ and fix warnings in evil_lualine

Makefile

@@ -3,6 +3,7 @@
 lint:
 	@luacheck lua/lualine
 	@luacheck lua/tests
+	@luacheck examples/
 
 format:
 	@for file in `find . -name '*.lua'`;do lua-format $$file -i; done;

README.md

@@ -28,7 +28,7 @@ For those who want to break the norms. You can create custom looks in lualine.
 
 **Example** :
 
-- [evil_lualine](https://gist.github.com/hoob3rt/b200435a765ca18f09f83580a606b878)
+- [evil_lualine](examples/evil_lualine.lua)
 <img width='700' src='https://user-images.githubusercontent.com/13149513/113875129-4453ba00-97d8-11eb-8f21-94a9ef565db3.png'/>
 
 ## Performance compared to other plugins

examples/evil_lualine.lua

@@ -0,0 +1,219 @@
+-- Eviline config for lualine
+-- Author: shadmansaleh
+-- Credit: glepnir
+local lualine = require 'lualine'
+
+-- Color table for highlights
+local colors = {
+  bg = '#202328',
+  fg = '#bbc2cf',
+  yellow = '#ECBE7B',
+  cyan = '#008080',
+  darkblue = '#081633',
+  green = '#98be65',
+  orange = '#FF8800',
+  violet = '#a9a1e1',
+  magenta = '#c678dd',
+  blue = '#51afef',
+  red = '#ec5f67'
+}
+
+local conditions = {
+  buffer_not_empty = function() return vim.fn.empty(vim.fn.expand('%:t')) ~= 1 end,
+  hide_in_width = function() return vim.fn.winwidth(0) > 80 end,
+  check_git_workspace = function()
+    local filepath = vim.fn.expand('%:p:h')
+    local gitdir = vim.fn.finddir('.git', filepath .. ';')
+    return gitdir and #gitdir > 0 and #gitdir < #filepath
+  end
+}
+
+-- Config
+local config = {
+  options = {
+    -- Disable sections and component separators
+    component_separators = "",
+    section_separators = "",
+    theme = {
+      -- We are going to use lualine_c an lualine_x as left and
+      -- right section. Both are highlighted by c theme .  So we
+      -- are just setting default looks o statusline
+      normal = {c = {fg = colors.fg, bg = colors.bg}},
+      inactive = {c = {fg = colors.fg, bg = colors.bg}}
+    }
+  },
+  sections = {
+    -- these are to remove the defaults
+    lualine_a = {},
+    lualine_b = {},
+    lualine_y = {},
+    lualine_z = {},
+    -- These will be filled later
+    lualine_c = {},
+    lualine_x = {}
+  },
+  inactive_sections = {
+    -- these are to remove the defaults
+    lualine_a = {},
+    lualine_v = {},
+    lualine_y = {},
+    lualine_z = {},
+    lualine_c = {},
+    lualine_x = {}
+  }
+}
+
+-- Inserts a component in lualine_c at left section
+local function ins_left(component)
+  table.insert(config.sections.lualine_c, component)
+end
+
+-- Inserts a component in lualine_x ot right section
+local function ins_right(component)
+  table.insert(config.sections.lualine_x, component)
+end
+
+ins_left {
+  function() return '▊' end,
+  color = {fg = colors.blue}, -- Sets highlighting of component
+  left_padding = 0 -- We don't need space before this
+}
+
+ins_left {
+  -- mode component
+  function()
+    -- auto change color according to neovims mode
+    local mode_color = {
+      n = colors.red,
+      i = colors.green,
+      v = colors.blue,
+      [''] = colors.blue,
+      V = colors.blue,
+      c = colors.magenta,
+      no = colors.red,
+      s = colors.orange,
+      S = colors.orange,
+      [''] = colors.orange,
+      ic = colors.yellow,
+      R = colors.violet,
+      Rv = colors.violet,
+      cv = colors.red,
+      ce = colors.red,
+      r = colors.cyan,
+      rm = colors.cyan,
+      ['r?'] = colors.cyan,
+      ['!'] = colors.red,
+      t = colors.red
+    }
+    vim.api.nvim_command(
+        'hi! LualineMode guifg=' .. mode_color[vim.fn.mode()] .. " guibg=" ..
+            colors.bg)
+    return ''
+  end,
+  color = "LualineMode",
+  left_padding = 0
+}
+
+ins_left {
+  -- filesize component
+  function()
+    local function format_file_size(file)
+      local size = vim.fn.getfsize(file)
+      if size <= 0 then return '' end
+      local sufixes = {'b', 'k', 'm', 'g'}
+      local i = 1
+      while size > 1024 do
+        size = size / 1024
+        i = i + 1
+      end
+      return string.format('%.1f%s', size, sufixes[i])
+    end
+    local file = vim.fn.expand('%:p')
+    if string.len(file) == 0 then return '' end
+    return format_file_size(file)
+  end,
+  condition = conditions.buffer_not_empty
+}
+
+ins_left {
+  'filename',
+  condition = conditions.buffer_not_empty,
+  color = {fg = colors.magenta, gui = 'bold'}
+}
+
+ins_left {'location'}
+
+ins_left {'progress', color = {fg = colors.fg, gui = 'bold'}}
+
+ins_left {
+  'diagnostics',
+  sources = {'nvim_lsp'},
+  symbols = {error = ' ', warn = ' ', info = ' '},
+  color_error = {fg = colors.red},
+  color_warn = {fg = colors.yellow},
+  color_info = {fg = colors.cyan}
+}
+
+-- Insert mid section. You can make any number of sections in neovim :)
+-- for lualine it's any number greater then 2
+ins_left {function() return '%=' end}
+
+ins_left {
+  -- Lsp server name .
+  function()
+    local msg = 'No Active Lsp'
+    local buf_ft = vim.api.nvim_buf_get_option(0, 'filetype')
+    local clients = vim.lsp.get_active_clients()
+    if next(clients) == nil then return msg end
+    for _, client in ipairs(clients) do
+      local filetypes = client.config.filetypes
+      if filetypes and vim.fn.index(filetypes, buf_ft) ~= -1 then
+        return client.name
+      end
+    end
+    return msg
+  end,
+  icon = ' LSP:',
+  color = {fg = '#ffffff', gui = 'bold'}
+}
+
+-- Add components to right sections
+ins_right {
+  'o:encoding', -- option component same as &encoding in viml
+  upper = true, -- I'm not sure why it's upper case either ;)
+  condition = conditions.hide_in_width,
+  color = {fg = colors.green, gui = 'bold'}
+}
+
+ins_right {
+  'fileformat',
+  upper = true,
+  icons_enabled = false, -- I think icons are cool but Eviline doesn't have them. sigh
+  color = {fg = colors.green, gui = 'bold'}
+}
+
+ins_right {
+  'branch',
+  icon = '',
+  condition = conditions.check_git_workspace,
+  color = {fg = colors.violet, gui = 'bold'}
+}
+
+ins_right {
+  'diff',
+  -- Is it me or the symbol for modified us really weird
+  symbols = {added = ' ', modified = '柳 ', removed = ' '},
+  color_added = {fg = colors.green},
+  color_modified = {fg = colors.orange},
+  color_removed = {fg = colors.red},
+  condition = conditions.hide_in_width
+}
+
+ins_right {
+  function() return '▊' end,
+  color = {fg = colors.blue},
+  right_padding = 0
+}
+
+-- Now don't forget to initialize lualine
+lualine.setup(config)