mini.nvim/lua/mini/statusline.lua at main · horga83/mini.nvim

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--- *mini.statusline* Statusline

--- *MiniStatusline*

---

--- ==============================================================================

---

--- Features:

--- - 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()|.

---

--- - Built-in active mode indicator with colors.

---

--- - Sections can hide information when window is too narrow (specific window

--- width is configurable per section).

---

--- # 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 'nvim-tree/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|.

---

--- You can override runtime config settings locally to buffer inside

--- `vim.b.ministatusline_config` which should have same structure as

--- `MiniStatusline.config`. See |mini.nvim-buffer-local-config| for more details.

---

--- # 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 `vim.g.ministatusline_disable`

--- (globally) or `vim.b.ministatusline_disable` (for a buffer) to `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.

--- 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 })

--- local search = MiniStatusline.section_searchcount({ 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 = { search, 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 __statusline_args table Section arguments.

---@alias __statusline_section string Section string.

-- Module definition ==========================================================

local MiniStatusline = {}

local H = {}

--- Module setup

---

---@param config table|nil Module config table. See |MiniStatusline.config|.

---

---@usage `require('mini.statusline').setup({})` (replace `{}` with your `config` table)

MiniStatusline.setup = function(config)

-- Export module

_G.MiniStatusline = MiniStatusline

-- Setup config

config = H.setup_config(config)

-- Apply config

H.apply_config(config)

-- Define behavior

H.create_autocommands()

-- - Disable built-in statusline in Quickfix window

vim.g.qf_disable_statusline = 1

-- Create default highlighting

H.create_default_hl()

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 icons by default

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

MiniStatusline.active = function()

if H.is_disabled() then return '' end

return (H.get_config().content.active or H.default_content_active)()

end

--- Compute content for inactive window

MiniStatusline.inactive = function()

if H.is_disabled() then return '' end

return (H.get_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 table Array of groups.

---

---@return string String suitable for 'statusline'.

MiniStatusline.combine_groups = function(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|nil Truncation width. If `nil`, output is `false`.

---

---@return boolean Whether to truncate.

MiniStatusline.is_truncated = function(trunc_width)

-- Use -1 to default to 'not truncated'

local cur_width = vim.o.laststatus == 3 and vim.o.columns or vim.api.nvim_win_get_width(0)

return cur_width < (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 __statusline_args

---

---@return ... Section string and mode's highlight group.

MiniStatusline.section_mode = function(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 __statusline_args Use `args.icon` to supply your own icon.

---

---@return __statusline_section

MiniStatusline.section_git = function(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 (H.get_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 __statusline_args Use `args.icon` to supply your own icon.

---

---@return __statusline_section

MiniStatusline.section_diagnostics = function(args)

_G.n_attached_lsp = H.n_attached_lsp

local dont_show = MiniStatusline.is_truncated(args.trunc_width) or H.isnt_normal_buffer() or H.has_no_lsp_attached()

if dont_show then return '' end

-- Construct string parts

local counts = H.get_diagnostic_count()

local severity, t = vim.diagnostic.severity, {}

for _, level in ipairs(H.diagnostic_levels) do

local n = counts[severity[level.name]] or 0

-- 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 (H.get_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 __statusline_args

---

---@return __statusline_section

MiniStatusline.section_filename = function(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

--- Section for file information

---

--- Short output contains only extension and is returned if window width is

--- lower than `args.trunc_width`.

---

---@param args __statusline_args

---

---@return __statusline_section

MiniStatusline.section_fileinfo = function(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 __statusline_args

---

---@return __statusline_section

MiniStatusline.section_location = function(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 on 0.1 ms order of magnitude). To prevent this, supply

--- `args.options = { recompute = false }`.

---

---@param args __statusline_args

---

---@return __statusline_section

MiniStatusline.section_searchcount = function(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 = vim.deepcopy(MiniStatusline.config)

-- Showed diagnostic levels

H.diagnostic_levels = {

{ name = 'ERROR', sign = 'E' },

{ name = 'WARN', sign = 'W' },

{ name = 'INFO', sign = 'I' },

{ name = 'HINT', sign = 'H' },

}

-- Count of attached LSP clients per buffer id

H.n_attached_lsp = {}

-- Helper functionality =======================================================

-- Settings -------------------------------------------------------------------

H.setup_config = function(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', vim.deepcopy(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' },

use_icons = { config.use_icons, 'boolean' },

})

vim.validate({

['content.active'] = { config.content.active, 'function', true },

['content.inactive'] = { config.content.inactive, 'function', true },

})

return config

end

H.apply_config = function(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

H.create_autocommands = function()

local augroup = vim.api.nvim_create_augroup('MiniStatusline', {})

local au = function(event, pattern, callback, desc)

vim.api.nvim_create_autocmd(event, { group = augroup, pattern = pattern, callback = callback, desc = desc })

end

local set_active = function() vim.wo.statusline = '%!v:lua.MiniStatusline.active()' end

au({ 'WinEnter', 'BufEnter' }, '*', set_active, 'Set active statusline')

local set_inactive = function() vim.wo.statusline = '%!v:lua.MiniStatusline.inactive()' end

au({ 'WinLeave', 'BufLeave' }, '*', set_inactive, 'Set inactive statusline')

if vim.fn.has('nvim-0.8') == 1 then

local make_track_lsp = function(increment)

return function(data) H.n_attached_lsp[data.buf] = (H.n_attached_lsp[data.buf] or 0) + increment end

end

au('LspAttach', '*', make_track_lsp(1), 'Track LSP clients')

au('LspDetach', '*', make_track_lsp(-1), 'Track LSP clients')

end

--stylua: ignore

H.create_default_hl = function()

local set_default_hl = function(name, data)

data.default = true

vim.api.nvim_set_hl(0, name, data)

end

set_default_hl('MiniStatuslineModeNormal', { link = 'Cursor' })

set_default_hl('MiniStatuslineModeInsert', { link = 'DiffChange' })

set_default_hl('MiniStatuslineModeVisual', { link = 'DiffAdd' })

set_default_hl('MiniStatuslineModeReplace', { link = 'DiffDelete' })

set_default_hl('MiniStatuslineModeCommand', { link = 'DiffText' })

set_default_hl('MiniStatuslineModeOther', { link = 'IncSearch' })

set_default_hl('MiniStatuslineDevinfo', { link = 'StatusLine' })

set_default_hl('MiniStatuslineFilename', { link = 'StatusLineNC' })

set_default_hl('MiniStatuslineFileinfo', { link = 'StatusLine' })

set_default_hl('MiniStatuslineInactive', { link = 'StatusLineNC' })

end

H.is_disabled = function() return vim.g.ministatusline_disable == true or vim.b.ministatusline_disable == true end

H.get_config = function(config)

return vim.tbl_deep_extend('force', MiniStatusline.config, vim.b.ministatusline_config or {}, config or {})

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 ------------------------------------------------------------

H.default_content_active = function()

-- 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 })

local search = MiniStatusline.section_searchcount({ 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 = { search, location } },

})

-- stylua: ignore end

end

H.default_content_inactive = function() return '%#MiniStatuslineInactive#%F%=' end

-- Utilities ------------------------------------------------------------------

H.isnt_normal_buffer = function()

-- For more information see ":h buftype"

return vim.bo.buftype ~= ''

end

H.get_filesize = function()

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

H.get_filetype_icon = function()

-- Skip if NerdFonts is disabled

if not H.get_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

H.has_no_lsp_attached = function() return (H.n_attached_lsp[vim.api.nvim_get_current_buf()] or 0) == 0 end

if vim.fn.has('nvim-0.8') == 0 then H.has_no_lsp_attached = function() return #vim.lsp.buf_get_clients() == 0 end end

H.get_diagnostic_count = function()

local res = {}

for _, d in ipairs(vim.diagnostic.get(0)) do

res[d.severity] = (res[d.severity] or 0) + 1

end

return res

end

if vim.fn.has('nvim-0.10') == 1 then H.get_diagnostic_count = function() return vim.diagnostic.count(0) end end

return MiniStatusline

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