245 lines
8.3 KiB
Lua
245 lines
8.3 KiB
Lua
-- Copyright (c) 2020-2021 hoob3rt
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-- MIT license, see LICENSE for more details.
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local highlight = require('lualine.highlight')
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local loader = require('lualine.utils.loader')
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local utils_section = require('lualine.utils.section')
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local utils = require('lualine.utils.utils')
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local config_module = require('lualine.config')
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local config = config_module.config
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local function apply_transitional_separators(previous_section, current_section,
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next_section)
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local function fill_section_separator(prev, next, sep, reverse)
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if #sep == 0 then return 0 end
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local transitional_highlight = highlight.get_transitional_highlights(prev,
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next,
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reverse)
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if transitional_highlight and #transitional_highlight > 0 then
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return transitional_highlight .. sep
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else
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return ''
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end
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end
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-- variable to track separators position
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local sep_pos = 1
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-- %s{sep} is marker for left separator and
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-- %S{sep} is marker for right separator
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-- Apply left separator
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while sep_pos do
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-- get what the separator char
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local sep = current_section.data:match('%%s{(.-)}', sep_pos)
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-- Get where separator starts from
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sep_pos = current_section.data:find('%%s{.-}', sep_pos)
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if not sep or not sep_pos then break end
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-- part of section before separator . -1 since we don't want the %
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local prev = current_section.data:sub(1, sep_pos - 1)
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-- part of section after separator. 4 is length of "%s{}"
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local nxt = current_section.data:sub(sep_pos + 4 + #sep)
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-- prev might not exist when separator is the first element of section
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-- use previous section as prev
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if not prev or #prev == 0 or sep_pos == 1 then
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prev = previous_section.data
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end
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if prev ~= previous_section.data then
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-- Since the section isn't suppose to be highlighted with separators
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-- separators highlight extract the last highlight and place it between
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-- separator and section
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local last_hl = prev:match('.*(%%#.-#).-')
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current_section.data = prev ..
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fill_section_separator(prev, nxt, sep, false) ..
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last_hl .. nxt
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else
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current_section.data = fill_section_separator(prev, nxt, sep, true) .. nxt
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end
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end
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-- Reset pos for right separator
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sep_pos = 1
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-- Apply right separator
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while sep_pos do
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local sep = current_section.data:match('%%S{(.-)}', sep_pos)
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sep_pos = current_section.data:find('%%S{.-}', sep_pos)
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if not sep or not sep_pos then break end
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local prev = current_section.data:sub(1, sep_pos - 1)
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local nxt = current_section.data:sub(sep_pos + 4 + #sep)
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if not nxt or #nxt == 0 or sep_pos == #current_section.data then
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nxt = next_section.data
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end
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if nxt ~= next_section.data then
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current_section.data = prev ..
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fill_section_separator(prev, nxt, sep, false) ..
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nxt
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else
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current_section.data = prev ..
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fill_section_separator(prev, nxt, sep, false)
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end
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sep_pos = sep_pos + 4 + #sep
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end
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return current_section.data
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end
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local function statusline(sections, is_focused)
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-- status_builder stores statusline without section_separators
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-- The sequence sections should maintain
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local section_sequence = {'a', 'b', 'c', 'x', 'y', 'z'}
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local status_builder = {}
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for _, section_name in ipairs(section_sequence) do
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if sections['lualine_' .. section_name] then
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-- insert highlight+components of this section to status_builder
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local section_data = utils_section.draw_section(
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sections['lualine_' .. section_name],
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section_name, is_focused)
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if #section_data > 0 then
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table.insert(status_builder, {name = section_name, data = section_data})
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end
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end
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end
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-- Actual statusline
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local status = {}
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local half_passed = false
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for i = 1, #status_builder do
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-- midsection divider
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if not half_passed and status_builder[i].name > 'c' then
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table.insert(status,
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highlight.format_highlight(is_focused, 'lualine_c') .. '%=')
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half_passed = true
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end
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-- component separator needs to have fg = current_section.bg
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-- and bg = adjacent_section.bg
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local previous_section = status_builder[i - 1] or {}
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local current_section = status_builder[i]
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local next_section = status_builder[i + 1] or {}
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local section = apply_transitional_separators(previous_section,
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current_section, next_section)
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table.insert(status, section)
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end
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-- incase none of x,y,z was configured lets not fill whole statusline with a,b,c section
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if not half_passed then
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table.insert(status,
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highlight.format_highlight(is_focused, 'lualine_c') .. '%=')
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end
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return table.concat(status)
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end
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-- check if any extension matches the filetype and return proper sections
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local function get_extension_sections(current_ft, is_focused)
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for _, extension in ipairs(config.extensions) do
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for _, filetype in ipairs(extension.filetypes) do
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if current_ft == filetype then
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if is_focused == false and extension.inactive_sections then
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return extension.inactive_sections
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end
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return extension.sections
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end
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end
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end
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return nil
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end
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local function status_dispatch()
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-- disable on specific filetypes
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local current_ft = vim.bo.filetype
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local is_focused = utils.is_focused()
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for _, ft in pairs(config.options.disabled_filetypes) do
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if ft == current_ft then
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vim.wo.statusline = ''
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return ''
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end
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end
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local extension_sections = get_extension_sections(current_ft, is_focused)
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if is_focused then
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if extension_sections ~= nil then
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return statusline(extension_sections, is_focused)
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end
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return statusline(config.sections, is_focused)
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else
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if extension_sections ~= nil then
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return statusline(extension_sections, is_focused)
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end
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return statusline(config.inactive_sections, is_focused)
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end
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end
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local function tabline() return statusline(config.tabline, true) end
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local function setup_theme()
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local function get_theme_from_config()
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local theme_name = config.options.theme
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if type(theme_name) == 'string' then
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package.loaded['lualine.themes.'..theme_name] = nil
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local ok, theme = pcall(require, 'lualine.themes.' .. theme_name)
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if ok then return theme end
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elseif type(theme_name) == 'table' then
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-- use the provided theme as-is
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return config.options.theme
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end
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vim.api.nvim_err_writeln('theme ' .. tostring(theme_name) ..
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' not found, defaulting to gruvbox')
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return require 'lualine.themes.gruvbox'
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end
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local theme = get_theme_from_config()
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highlight.create_highlight_groups(theme)
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vim.cmd [[
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autocmd lualine ColorScheme * lua require'lualine.utils.utils'.reload_highlights()
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autocmd lualine OptionSet background lua require'lualine'.setup()
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]]
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end
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local function set_tabline()
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if next(config.tabline) ~= nil then
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vim.go.tabline = "%{%v:lua.require'lualine'.tabline()%}"
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vim.go.showtabline = 2
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end
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end
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local function set_statusline()
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if next(config.sections) ~= nil or next(config.inactive_sections) ~= nil then
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vim.go.statusline = "%{%v:lua.require'lualine'.statusline()%}"
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vim.cmd([[
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autocmd lualine VimResized * redrawstatus
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]])
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end
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end
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local function setup_augroup()
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vim.cmd [[
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augroup lualine
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autocmd!
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augroup END
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]]
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end
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local function setup(user_config)
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if user_config then
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config = config_module.apply_configuration(user_config)
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elseif vim.g.lualine then
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vim.schedule(function()
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vim.api.nvim_err_writeln(
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[[Lualine: lualine will stop supporting vimscript soon, change your config to lua or wrap it around lua << EOF ... EOF]]) -- luacheck: ignore
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end)
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config = config_module.apply_configuration(vim.g.lualine)
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else
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config = config_module.apply_configuration({})
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end
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setup_augroup()
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setup_theme()
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loader.load_all(config)
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set_statusline()
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set_tabline()
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end
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return {
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setup = setup,
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statusline = status_dispatch,
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tabline = tabline,
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get_config = config_module.get_config,
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}
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