114 lines
3.1 KiB
Lua
114 lines
3.1 KiB
Lua
local M = {}
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function M.remove_trailing_whitespace()
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local curpos = vim.api.nvim_win_get_cursor(0)
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vim.cmd([[keeppatterns %s/\s\+$//e]])
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vim.api.nvim_win_set_cursor(0, curpos)
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end
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vim.api.nvim_create_augroup('config_functions', { clear = true })
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vim.api.nvim_create_autocmd(
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{ 'BufWritePre' },
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{
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group = 'config_functions',
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pattern = {
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'*.lua', '*.cpp', '*.hpp',
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'*.conf', '*.cfg', '*.ini', '*.adoc'
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},
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callback = M.remove_trailing_whitespace
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}
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)
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-- Insert or update a modeline at the bottom of the buffer
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function M.insert_modeline()
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local comment_string = vim.o.commentstring
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local space_maybe = ''
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if string.match(comment_string, '%%s(.*)') ~= '' then
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space_maybe = ' '
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end
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local fenc = vim.o.fileencoding
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if fenc == '' then
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fenc = 'utf-8'
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end
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local modeline_elements = {
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' vim: set',
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' fenc=' .. fenc,
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' ts=' .. vim.o.tabstop,
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' sw=' .. vim.o.shiftwidth,
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(vim.o.expandtab and ' et' or ' noet'),
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' tw=' .. vim.o.textwidth,
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':',
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space_maybe
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}
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local modeline = comment_string:gsub('%%s', table.concat(modeline_elements))
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modeline = modeline:gsub(' ', ' ')
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local buffer = vim.api.nvim_win_get_buf(0)
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local current = vim.api.nvim_buf_get_lines(buffer, -2, -1, true)[1]
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if current == modeline then
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print('modeline already exists')
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elseif string.match(current, 'vim:') then
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vim.api.nvim_buf_set_lines(buffer, -2, -1, true, { modeline })
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print('modeline updated')
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else
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vim.api.nvim_buf_set_lines(buffer, -1, -1, true, { '', modeline })
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print('modeline inserted')
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end
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end
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vim.api.nvim_create_user_command('ModelineInsert', M.insert_modeline, {})
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-- set colorcolumn to textwidth after buffer is displayed or option is changed
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function M.set_colorcolumn()
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if vim.o.textwidth > 0 then
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vim.opt_local.colorcolumn = { vim.o.textwidth }
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else
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vim.opt_local.colorcolumn = ''
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end
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end
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vim.api.nvim_create_augroup('config_settings', { clear = true })
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vim.api.nvim_create_autocmd(
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{ 'BufEnter' },
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{
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group = 'config_settings',
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callback = M.set_colorcolumn
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}
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)
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vim.api.nvim_create_autocmd(
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{ 'OptionSet' },
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{
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group = 'config_settings',
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pattern = { 'textwidth' },
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callback = M.set_colorcolumn
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}
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)
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function M.get_project_root()
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local path = vim.api.nvim_buf_get_name(0)
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local root_markers = {
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'.git', '.hg', '.svn', '.bzr', '_darcs',
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'.projectile', '.clang-format', '.luarc.json'
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}
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local sep = '/'
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repeat
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path = path:gsub(string.format('%s[^%s]*$', sep, sep), '')
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for _, marker in ipairs(root_markers) do
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if io.open(path .. sep .. marker) then
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return path
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end
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end
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until path == ''
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return nil
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end
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function M.shell_capture(command)
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local handle = io.popen(command)
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if not handle then return nil end
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local result = handle:read() or nil
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handle:close()
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return result
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end
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return M
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