74 lines
2.0 KiB
Lua
74 lines
2.0 KiB
Lua
-- Copyright (c) 2020-2021 shadmansaleh
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-- MIT license, see LICENSE for more details.
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local M = require('lualine.component'):extend()
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local default_options = {
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symbols = { modified = '[+]', readonly = '[-]', unnamed = '[No Name]' },
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file_status = true,
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path = 0,
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shorting_target = 40,
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}
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---counts how many times pattern occur in base ( used for counting path-sep )
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---@param base string
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---@param pattern string
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---@return number
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local function count(base, pattern)
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return select(2, string.gsub(base, pattern, ''))
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end
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---shortens path by turning apple/orange -> a/orange
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---@param path string
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---@param sep string path separator
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---@return string
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local function shorten_path(path, sep)
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-- ('([^/])[^/]+%/', '%1/', 1)
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return path:gsub(string.format('([^%s])[^%s]+%%%s', sep, sep, sep), '%1' .. sep, 1)
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end
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M.init = function(self, options)
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M.super.init(self, options)
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self.options = vim.tbl_deep_extend('keep', self.options or {}, default_options)
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end
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M.update_status = function(self)
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local data
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if self.options.path == 1 then
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-- relative path
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data = vim.fn.expand '%:~:.'
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elseif self.options.path == 2 then
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-- absolute path
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data = vim.fn.expand '%:p'
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else
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-- just filename
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data = vim.fn.expand '%:t'
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end
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if data == '' then
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data = self.options.symbols.unnamed
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end
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if self.options.shorting_target ~= 0 then
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local windwidth = vim.fn.winwidth(0)
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local estimated_space_available = windwidth - self.options.shorting_target
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local path_separator = package.config:sub(1, 1)
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for _ = 0, count(data, path_separator) do
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if windwidth <= 84 or #data > estimated_space_available then
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data = shorten_path(data, path_separator)
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end
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end
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end
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if self.options.file_status then
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if vim.bo.modified then
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data = data .. self.options.symbols.modified
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elseif vim.bo.modifiable == false or vim.bo.readonly == true then
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data = data .. self.options.symbols.readonly
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end
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end
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return data
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end
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return M
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