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-- MIT License Copyright (c) 2021 Evgeni Chasnovski
-- Documentation ==============================================================
--- Minimal and fast statusline module with opinionated default look.
--- Special features: change color depending on current mode and compact
--- version of sections activated when window width is small enough.
---
--- Features:
--- - Built-in active mode indicator with colors.
--- - Sections can hide information when window is too narrow (specific window
--- width is configurable per section).
--- - Define own custom statusline structure for active and inactive windows.
--- This is done with a function which should return string appropriate for
--- |statusline|. Its code should be similar to default one with structure:
--- - Compute string data for every section you want to be displayed.
--- - Combine them in groups with |MiniStatusline.combine_groups()|.
---
--- # Dependencies~
---
--- Suggested dependencies (provide extra functionality, statusline will work
--- without them):
--- - Nerd font (to support extra icons).
--- - Plugin 'lewis6991/gitsigns.nvim' for Git information in
--- |MiniStatusline.section_git|. If missing, no section will be shown.
--- - Plugin 'kyazdani42/nvim-web-devicons' for filetype icons in
--- `MiniStatusline.section_fileinfo`. If missing, no icons will be shown.
---
--- # Setup~
---
--- This module needs a setup with `require('mini.statusline').setup({})`
--- (replace `{}` with your `config` table). It will create global Lua table
--- `MiniStatusline` which you can use for scripting or manually (with
--- `:lua MiniStatusline.*`).
---
--- See |MiniStatusline.config| for `config` structure and default values. For
--- some content examples, see |MiniStatusline-example-content|.
---
--- # Highlight groups~
---
--- Highlight depending on mode (second output from |MiniStatusline.section_mode|):
--- * `MiniStatuslineModeNormal` - Normal mode.
--- * `MiniStatuslineModeInsert` - Insert mode.
--- * `MiniStatuslineModeVisual` - Visual mode.
--- * `MiniStatuslineModeReplace` - Replace mode.
--- * `MiniStatuslineModeCommand` - Command mode.
--- * `MiniStatuslineModeOther` - other modes (like Terminal, etc.).
---
--- Highlight used in default statusline:
--- * `MiniStatuslineDevinfo` - for "dev info" group
--- (|MiniStatusline.section_git| and |MiniStatusline.section_diagnostics|).
--- * `MiniStatuslineFilename` - for |MiniStatusline.section_filename| section.
--- * `MiniStatuslineFileinfo` - for |MiniStatusline.section_fileinfo| section.
---
--- Other groups:
--- * `MiniStatuslineInactive` - highliting in not focused window.
---
--- To change any highlight group, modify it directly with |:highlight|.
---
--- # Disabling~
---
--- To disable (show empty statusline), set `g:ministatusline_disable`
--- (globally) or `b:ministatusline_disable` (for a buffer) to `v:true`.
--- Considering high number of different scenarios and customization
--- intentions, writing exact rules for disabling module's functionality is
--- left to user. See |mini.nvim-disabling-recipes| for common recipes.
---@tag mini.statusline
---@tag MiniStatusline
---@toc_entry Statusline
--- Example content
---
--- # Default content~
---
--- This function is used as default value for active content:
--- >
--- function()
--- local mode, mode_hl = MiniStatusline.section_mode({ trunc_width = 120 })
--- local git = MiniStatusline.section_git({ trunc_width = 75 })
--- local diagnostics = MiniStatusline.section_diagnostics({ trunc_width = 75 })
--- local filename = MiniStatusline.section_filename({ trunc_width = 140 })
--- local fileinfo = MiniStatusline.section_fileinfo({ trunc_width = 120 })
--- local location = MiniStatusline.section_location({ trunc_width = 75 })
---
--- return MiniStatusline.combine_groups({
--- { hl = mode_hl, strings = { mode } },
--- { hl = 'MiniStatuslineDevinfo', strings = { git, diagnostics } },
--- '%<', -- Mark general truncate point
--- { hl = 'MiniStatuslineFilename', strings = { filename } },
--- '%=', -- End left alignment
--- { hl = 'MiniStatuslineFileinfo', strings = { fileinfo } },
--- { hl = mode_hl, strings = { location } },
--- })
--- end
--- <
--- # Show boolean options~
---
--- To compute section string for boolean option use variation of this code
--- snippet inside content function (you can modify option itself, truncation
--- width, short and long displayed names):
--- >
--- local spell = vim.wo.spell and (MiniStatusline.is_truncated(120) and 'S' or 'SPELL') or ''
--- <
--- Here `x and y or z` is a common Lua way of doing ternary operator: if `x`
--- is `true`-ish then return `y`, if not - return `z`.
---@tag MiniStatusline-example-content
---@alias __args table Section arguments.
---@alias __section string Section string.
-- Module definition ==========================================================
local MiniStatusline = {}
local H = {}
--- Module setup
---
---@param config table Module config table. See |MiniStatusline.config|.
---
---@usage `require('mini.statusline').setup({})` (replace `{}` with your `config` table)
function MiniStatusline.setup(config)
-- Export module
_G.MiniStatusline = MiniStatusline
-- Setup config
config = H.setup_config(config)
-- Apply config
H.apply_config(config)
-- Module behavior
vim.api.nvim_exec(
[[augroup MiniStatusline
au!
au WinEnter,BufEnter * setlocal statusline=%!v:lua.MiniStatusline.active()
au WinLeave,BufLeave * setlocal statusline=%!v:lua.MiniStatusline.inactive()
augroup END]],
false
)
-- Create highlighting
vim.api.nvim_exec(
[[hi default link MiniStatuslineModeNormal Cursor
hi default link MiniStatuslineModeInsert DiffChange
hi default link MiniStatuslineModeVisual DiffAdd
hi default link MiniStatuslineModeReplace DiffDelete
hi default link MiniStatuslineModeCommand DiffText
hi default link MiniStatuslineModeOther IncSearch
hi default link MiniStatuslineDevinfo StatusLine
hi default link MiniStatuslineFilename StatusLineNC
hi default link MiniStatuslineFileinfo StatusLine
hi default link MiniStatuslineInactive StatusLineNC]],
false
)
end
--- Module config
---
--- Default values:
---@eval return MiniDoc.afterlines_to_code(MiniDoc.current.eval_section)
MiniStatusline.config = {
-- Content of statusline as functions which return statusline string. See
-- `:h statusline` and code of default contents (used instead of `nil`).
content = {
-- Content for active window
active = nil,
-- Content for inactive window(s)
inactive = nil,
},
-- Whether to use Nert Fonts.
use_icons = true,
-- Whether to set Vim's settings for statusline (make it always shown with
-- 'laststatus' set to 2). To use global statusline in Neovim>=0.7.0, set
-- this to `false` and 'laststatus' to 3.
set_vim_settings = true,
}
--minidoc_afterlines_end
-- Module functionality =======================================================
--- Compute content for active window
function MiniStatusline.active()
if H.is_disabled() then
return ''
end
return (MiniStatusline.config.content.active or H.default_content_active)()
end
8000
--- Compute content for inactive window
function MiniStatusline.inactive()
if H.is_disabled() then
return ''
end
return (MiniStatusline.config.content.inactive or H.default_content_inactive)()
end
--- Combine groups of sections
---
--- Each group can be either a string or a table with fields `hl` (group's
--- highlight group) and `strings` (strings representing sections).
---
--- General idea of this function is as follows;
--- - String group is used as is (useful for special strings like `%<` or `%=`).
--- - Each table group has own highlighting in `hl` field (if missing, the
--- previous one is used) and string parts in `strings` field. Non-empty
--- strings from `strings` are separated by one space. Non-empty groups are
--- separated by two spaces (one for each highlighting).
---
---@param groups string|table Array of groups.
---
---@return string String suitable for 'statusline'.
function MiniStatusline.combine_groups(groups)
local parts = vim.tbl_map(function(s)
--stylua: ignore start
if type(s) == 'string' then return s end
if type(s) ~= 'table' then return '' end
local string_arr = vim.tbl_filter(function(x) return type(x) == 'string' and x ~= '' end, s.strings or {})
local str = table.concat(string_arr, ' ')
-- Use previous highlight group
if s.hl == nil then
return (' %s '):format(str)
end
-- Allow using this highlight group later
if str:len() == 0 then
return string.format('%%#%s#', s.hl)
end
return string.format('%%#%s# %s ', s.hl, str)
--stylua: ignore end
end, groups)
return table.concat(parts, '')
end
--- Decide whether to truncate
---
--- This basically computes window width and compares it to `trunc_width`: if
--- window is smaller then truncate; otherwise don't. Don't truncate by
--- default.
---
--- Use this to manually decide if section needs truncation or not.
---
---@param trunc_width number Truncation width. If `nil`, output is `false`.
---
---@return boolean Whether to truncate.
function MiniStatusline.is_truncated(trunc_width)
-- Use -1 to default to 'not truncated'
return vim.api.nvim_win_get_width(0) < (trunc_width or -1)
end
-- Sections ===================================================================
-- Functions should return output text without whitespace on sides.
-- Return empty string to omit section.
--- Section for Vim |mode()|
---
--- Short output is returned if window width is lower than `args.trunc_width`.
---
---@param args __args
---
---@return ... Section string and mode's highlight group.
function MiniStatusline.section_mode(args)
local mode_info = H.modes[vim.fn.mode()]
local mode = MiniStatusline.is_truncated(args.trunc_width) and mode_info.short or mode_info.long
return mode, mode_info.hl
end
--- Section for Git information
---
--- Normal output contains name of `HEAD` (via |b:gitsigns_head|) and chunk
--- information (via |b:gitsigns_status|). Short output - only name of `HEAD`.
--- Note: requires 'lewis6991/gitsigns' plugin.
---
--- Short output is returned if window width is lower than `args.trunc_width`.
---
---@param args __args Use `args.icon` to supply your own icon.
---
---@return __section
function MiniStatusline.section_git(args)
if H.isnt_normal_buffer() then
return ''
end
local head = vim.b.gitsigns_head or '-'
local signs = MiniStatusline.is_truncated(args.trunc_width) and '' or (vim.b.gitsigns_status or '')
local icon = args.icon or (MiniStatusline.config.use_icons and '' or 'Git')
if signs == '' then
if head == '-' or head == '' then
return ''
end
return string.format('%s %s', icon, head)
end
return string.format('%s %s %s', icon, head, signs)
end
--- Section for Neovim's builtin diagnostics
---
--- Shows nothing if there is no attached LSP clients or for short output.
--- Otherwise uses builtin Neovim capabilities to compute and show number of
--- errors ('E'), warnings ('W'), information ('I'), and hints ('H').
---
--- Short output is returned if window width is lower than `args.trunc_width`.
---
---@param args __args Use `args.icon` to supply your own icon.
---
---@return __section
function MiniStatusline.section_diagnostics(args)
-- Assumption: there are no attached clients if table
-- `vim.lsp.buf_get_clients()` is empty
local hasnt_attached_client = next(vim.lsp.buf_get_clients()) == nil
local dont_show_lsp = MiniStatusline.is_truncated(args.trunc_width) or H.isnt_normal_buffer() or hasnt_attached_client
if dont_show_lsp then
return ''
end
-- Construct diagnostic info using predefined order
local t = {}
for _, level in ipairs(H.diagnostic_levels) do
local n = H.get_diagnostic_count(level.id)
-- Add level info only if diagnostic is present
if n > 0 then
table.insert(t, string.format(' %s%s', level.sign, n))
end
end
local icon = args.icon or (MiniStatusline.config.use_icons and '' or 'LSP')
if vim.tbl_count(t) == 0 then
return ('%s -'):format(icon)
end
return string.format('%s%s', icon, table.concat(t, ''))
end
--- Section for file name
---
--- Show full file name or relative in short output.
---
--- Short output is returned if window width is lower than `args.trunc_width`.
---
---@param args __args
---
---@return __section
function MiniStatusline.section_filename(args)
-- In terminal always use plain name
if vim.bo.buftype == 'terminal' then
return '%t'
elseif MiniStatusline.is_truncated(args.trunc_width) then
-- File name with 'truncate', 'modified', 'readonly' flags
-- Use relative path if truncated
return '%f%m%r'
else
-- Use fullpath if not truncated
return '%F%m%r'
end
end
--- Section for file information
---
--- Short output contains only extension and is returned if window width is
--- lower than `args.trunc_width`.
---
---@param args __args
---
---@return __section
function MiniStatusline.section_fileinfo(args)
local filetype = vim.bo.filetype
-- Don't show anything if can't detect file type or not inside a "normal
-- buffer"
if (filetype == '') or H.isnt_normal_buffer() then
return ''
end
-- Add filetype icon
local icon = H.get_filetype_icon()
if icon ~= '' then
filetype = string.format('%s %s', icon, filetype)
end
-- Construct output string if truncated
if MiniStatusline.is_truncated(args.trunc_width) then
return filetype
end
-- Construct output string with extra file info
local encoding = vim.bo.fileencoding or vim.bo.encoding
local format = vim.bo.fileformat
local size = H.get_filesize()
return string.format('%s %s[%s] %s', filetype, encoding, format, size)
end
--- Section for location inside buffer
---
--- Show location inside buffer in the form:
--- - Normal: '<cursor line>|<total lines>│<cursor column>|<total columns>'.
--- - Short: '<cursor line>│<cursor column>'.
---
--- Short output is returned if window width is lower than `args.trunc_width`.
---
---@param args __args
---
---@return __section
function MiniStatusline.section_location(args)
-- Use virtual column number to allow update when past last column
if MiniStatusline.is_truncated(args.trunc_width) then
return '%l│%2v'
end
-- Use `virtcol()` to correctly handle multi-byte characters
return '%l|%L│%2v|%-2{virtcol("$") - 1}'
end
--- Section for current search count
---
--- Show the current status of |searchcount()|. Empty output is returned if
--- window width is lower than `args.trunc_width`, search highlighting is not
--- on (see |v:hlsearch|), or if number of search result is 0.
---
--- `args.options` is forwarded to |searchcount()|. By default it recomputes
--- data on every call which can be computationally expensive (although still
--- usually same order of magnitude as 0.1 ms). To prevent this, supply
--- `args.options = {recompute = false}`.
---
---@param args __args
---
---@return __section
function MiniStatusline.section_searchcount(args)
if vim.v.hlsearch == 0 or MiniStatusline.is_truncated(args.trunc_width) then
return ''
end
-- `searchcount()` can return errors because it is evaluated very often in
-- statusline. For example, when typing `/` followed by `\(`, it gives E54.
local ok, s_count = pcall(vim.fn.searchcount, (args or {}).options or { recompute = true })
if not ok or s_count.current == nil or s_count.total == 0 then
return ''
end
if s_count.incomplete == 1 then
return '?/?'
end
local too_many = ('>%d'):format(s_count.maxcount)
local current = s_count.current > s_count.maxcount and too_many or s_count.current
local total = s_count.total > s_count.maxcount and too_many or s_count.total
return ('%s/%s'):format(current, total)
end
-- Helper data ================================================================
-- Module default config
H.default_config = MiniStatusline.config
-- Showed diagnostic levels
if vim.fn.has('nvim-0.6') == 1 then
H.diagnostic_levels = {
{ id = vim.diagnostic.severity.ERROR, sign = 'E' },
{ id = vim.diagnostic.severity.WARN, sign = 'W' },
{ id = vim.diagnostic.severity.INFO, sign = 'I' },
{ id = vim.diagnostic.severity.HINT, sign = 'H' },
}
else
H.diagnostic_levels = {
{ id = 'Error', sign = 'E' },
{ id = 'Warning', sign = 'W' },
{ id = 'Information', sign = 'I' },
{ id = 'Hint', sign = 'H' },
}
end
-- Helper functionality =======================================================
-- Settings -------------------------------------------------------------------
function H.setup_config(config)
-- General idea: if some table elements are not present in user-supplied
-- `config`, take them from default config
vim.validate({ config = { config, 'table', true } })
config = vim.tbl_deep_extend('force', H.default_config, config or {})
-- Validate per nesting level to produce correct error message
vim.validate({
content = { config.content, 'table' },
set_vim_settings = { config.set_vim_settings, 'boolean' },
})
vim.validate({
['content.active'] = { config.content.active, 'function', true },
['content.inactive'] = { config.content.inactive, 'function', true },
})
return config
end
function H.apply_config(config)
MiniStatusline.config = config
-- Set settings to ensure statusline is displayed properly
if config.set_vim_settings then
vim.o.laststatus = 2 -- Always show statusline
end
end
function H.is_disabled()
return vim.g.ministatusline_disable == true or vim.b.ministatusline_disable == true
end
-- Mode -----------------------------------------------------------------------
-- Custom `^V` and `^S` symbols to make this file appropriate for copy-paste
-- (otherwise those symbols are not displayed).
local CTRL_S = vim.api.nvim_replace_termcodes('<C-S>', true, true, true)
local CTRL_V = vim.api.nvim_replace_termcodes('<C-V>', true, true, true)
-- stylua: ignore start
H.modes = setmetatable({
['n'] = { long = 'Normal', short = 'N', hl = 'MiniStatuslineModeNormal' },
['v'] = { long = 'Visual', short = 'V', hl = 'MiniStatuslineModeVisual' },
['V'] = { long = 'V-Line', short = 'V-L', hl = 'MiniStatuslineModeVisual' },
[CTRL_V] = { long = 'V-Block', short = 'V-B', hl = 'MiniStatuslineModeVisual' },
['s'] = { long = 'Select', short = 'S', hl = 'MiniStatuslineModeVisual' },
['S'] = { long = 'S-Line', short = 'S-L', hl = 'MiniStatuslineModeVisual' },
[CTRL_S] = { long = 'S-Block', short = 'S-B', hl = 'MiniStatuslineModeVisual' },
['i'] = { long = 'Insert', short = 'I', hl = 'MiniStatuslineModeInsert' },
['R'] = { long = 'Replace', short = 'R', hl = 'MiniStatuslineModeReplace' },
['c'] = { long = 'Command', short = 'C', hl = 'MiniStatuslineModeCommand' },
['r'] = { long = 'Prompt', short = 'P', hl = 'MiniStatuslineModeOther' },
['!'] = { long = 'Shell', short = 'Sh', hl = 'MiniStatuslineModeOther' },
['t'] = { long = 'Terminal', short = 'T', hl = 'MiniStatuslineModeOther' },
}, {
-- By default return 'Unknown' but this shouldn't be needed
__index = function()
return { long = 'Unknown', short = 'U', hl = '%#MiniStatuslineModeOther#' }
end,
})
-- stylua: ignore end
-- Default content ------------------------------------------------------------
function H.default_content_active()
-- stylua: ignore start
local mode, mode_hl = MiniStatusline.section_mode({ trunc_width = 120 })
local git = MiniStatusline.section_git({ trunc_width = 75 })
local diagnostics = MiniStatusline.section_diagnostics({ trunc_width = 75 })
local filename = MiniStatusline.section_filename({ trunc_width = 140 })
local fileinfo = MiniStatusline.section_fileinfo({ trunc_width = 120 })
local location = MiniStatusline.section_location({ trunc_width = 75 })
-- Usage of `MiniStatusline.combine_groups()` ensures highlighting and
-- correct padding with spaces between groups (accounts for 'missing'
-- sections, etc.)
return MiniStatusline.combine_groups({
{ hl = mode_hl, strings = { mode } },
{ hl = 'MiniStatuslineDevinfo', strings = { git, diagnostics } },
'%<', -- Mark general truncate point
{ hl = 'MiniStatuslineFilename', strings = { filename } },
'%=', -- End left alignment
{ hl = 'MiniStatuslineFileinfo', strings = { fileinfo } },
{ hl = mode_hl, strings = { location } },
})
-- stylua: ignore end
end
function H.default_content_inactive()
return '%#MiniStatuslineInactive#%F%='
end
-- Utilities ------------------------------------------------------------------
function H.isnt_normal_buffer()
-- For more information see ":h buftype"
return vim.bo.buftype ~= ''
end
function H.get_filesize()
local size = vim.fn.getfsize(vim.fn.getreg('%'))
if size < 1024 then
return string.format('%dB', size)
elseif size < 1048576 then
return string.format('%.2fKiB', size / 1024)
else
return string.format('%.2fMiB', size / 1048576)
end
end
function H.get_filetype_icon()
-- Skip if NerdFonts is disabled
if not MiniStatusline.config.use_icons then
return ''
end
-- Have this `require()` here to not depend on plugin initialization order
local has_devicons, devicons = pcall(require, 'nvim-web-devicons')
if not has_devicons then
return ''
end
local file_name, file_ext = vim.fn.expand('%:t'), vim.fn.expand('%:e')
return devicons.get_icon(file_name, file_ext, { default = true })
end
if vim.fn.has('nvim-0.6') == 1 then
H.get_diagnostic_count = function(id)
return #vim.diagnostic.get(0, { severity = id })
end
else
H.get_diagnostic_count = function(id)
return vim.lsp.diagnostic.get_count(0, id)
end
end
return MiniStatusline