84 lines
2.2 KiB
Lua
84 lines
2.2 KiB
Lua
-- Copyright (c) 2020-2021 shadmansaleh
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-- MIT license, see LICENSE for more details.
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local M = {}
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-- Note for now only works for termguicolors scope can be bg or fg or any other
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-- attr parameter like bold/italic/reverse
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function M.extract_highlight_colors(color_group, scope)
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if vim.fn.hlexists(color_group) == 0 then
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return nil
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end
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local color = vim.api.nvim_get_hl_by_name(color_group, true)
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if color.background ~= nil then
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color.bg = string.format('#%06x', color.background)
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color.background = nil
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end
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if color.foreground ~= nil then
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color.fg = string.format('#%06x', color.foreground)
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color.foreground = nil
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end
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if scope then
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return color[scope]
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end
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return color
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end
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-- retrives color value from highlight group name in syntax_list
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-- first present highlight is returned
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function M.extract_color_from_hllist(scope, syntaxlist, default)
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for _, highlight_name in ipairs(syntaxlist) do
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if vim.fn.hlexists(highlight_name) ~= 0 then
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local color = M.extract_highlight_colors(highlight_name)
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if color.reverse then
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if scope == 'bg' then
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scope = 'fg'
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else
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scope = 'bg'
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end
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end
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if color[scope] then
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return color[scope]
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end
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end
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end
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return default
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end
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-- remove empty strings from list
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function M.list_shrink(list)
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local new_list = {}
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for i = 1, #list do
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if list[i] and #list[i] > 0 then
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table.insert(new_list, list[i])
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end
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end
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return new_list
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end
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-- Check if a auto command is already defined
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local function autocmd_is_defined(event, patern, command_str)
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return vim.api.nvim_exec(string.format('au lualine %s %s', event, patern), true):find(command_str) ~= nil
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end
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-- Define a auto command if it's not already defined
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function M.define_autocmd(event, patern, cmd)
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if not cmd then
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cmd = patern
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patern = '*'
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end
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if not autocmd_is_defined(event, patern, cmd) then
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vim.cmd(string.format('autocmd lualine %s %s %s', event, patern, cmd))
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end
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end
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-- Check if statusline is on focused window or not
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function M.is_focused()
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return tonumber(vim.g.actual_curwin) == vim.fn.win_getid()
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end
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function M.charAt(str, pos)
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return string.char(str:byte(pos))
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end
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return M
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