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--- *mini.statusline* Statusline
--- *MiniStatusline*
---
--- MIT License Copyright (c) 2021 Evgeni Chasnovski
---
--- ==============================================================================
---
--- 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)
local dont_show = MiniStatusline.is_truncated(args.trunc_width) or H.isnt_normal_buffer() or H.has_no_lsp_attached()
if dont_show or H.diagnostic_is_disabled() then return '' end
-- Construct string parts
local count = H.diagnostic_get_count()
local severity, t = vim.diagnostic.severity, {}
for _, level in ipairs(H.diagnostic_levels) do
local n = count[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
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 end
-- Ensure proper 'statusline' values (to not rely on autocommands trigger)
H.ensure_content()
-- Set global value to reduce flickering when first time entering buffer, as
-- it is used by default before content is ensured on next loop
vim.go.statusline = '%!v:lua.MiniStatusline.active()'
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
au({ 'WinEnter', 'BufWinEnter' }, '*', H.ensure_content, 'Ensure statusline content')
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
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
-- Content --------------------------------------------------------------------
H.ensure_content = vim.schedule_wrap(function()
-- NOTE: Use `schedule_wrap()` to properly work inside autocommands because
-- they might temporarily change current window
local cur_win_id = vim.api.nvim_get_current_win()
for _, win_id in ipairs(vim.api.nvim_list_wins()) do
vim.wo[win_id].statusline = win_id == cur_win_id and '%!v:lua.MiniStatusline.active()'
or '%!v:lua.MiniStatusline.inactive()'
end
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
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.diagnostic_get_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.diagnostic_get_count = function() return vim.diagnostic.count(0) end end
H.diagnostic_is_disabled = function() return vim.diagnostic.is_disabled(0) end
if vim.fn.has('nvim-0.9') == 0 then H.diagnostic_is_disabled = function(_) return false end end
return MiniStatusline