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SpaceVim/lua/spacevim/plugin/autosave.lua
2024-05-22 11:46:16 +08:00

110 lines
3.1 KiB
Lua

--=============================================================================
-- autosave.lua --- autosave plugin
-- Copyright (c) 2016-2023 Wang Shidong & Contributors
-- Author: Wang Shidong < wsdjeg@outlook.com >
-- URL: https://spacevim.org
-- License: GPLv3
--=============================================================================
local default_opt = {
timeoutlen = 60 * 5 * 1000,
backupdir = '~/.cache/SpaceVim/backup/',
save_all_buffers = false,
event = { 'InsertLeave', 'TextChanged' },
filetype = {},
filetypeExclude = {},
buftypeExclude = {},
bufNameExclude = {},
}
local logger = require('spacevim.logger').derive('autosave')
local f = require('spacevim.api').import('file')
local autosave_timer = -1
local M = {}
local function location_path(bufname)
if vim.fn.empty(default_opt.backupdir) == 1 then
return bufname
else
local pth = f.unify_path(default_opt.backupdir, ':p')
.. f.path_to_fname(bufname, '+=')
.. '.backup'
logger.info('backup path is:' .. pth)
return pth
end
end
local function save_buffer(bufnr)
if
vim.fn.getbufvar(bufnr, '&modified') == 1
and vim.fn.empty(vim.fn.getbufvar(bufnr, '&buftype')) == 1
and vim.fn.filewritable(vim.fn.bufname(bufnr)) == 1
and vim.fn.empty(vim.fn.bufname(bufnr)) == 0
then
local lines = vim.fn.getbufline(bufnr, 1, '$')
local f = location_path(vim.fn.bufname(bufnr))
local ok, rst = pcall(vim.fn.writefile, lines, f)
if not ok then
logger.info('failed to autosave file:' .. f)
logger.warn(rst)
end
if vim.fn.empty(default_opt.backupdir) == 1 then
vim.fn.setbufvar(bufnr, '&modified', 0)
vim.cmd('silent checktime ' .. bufnr)
end
end
end
local function auto_dosave(...)
if default_opt.save_all_buffers then
for _, nr in ipairs(vim.fn.range(1, vim.fn.bufnr('$'))) do
save_buffer(nr)
end
else
save_buffer(vim.fn.bufnr('%'))
end
end
local function setup_timer(_timeoutlen)
if vim.fn.has('timers') == 0 then
logger.warn('failed to setup timer, needs `+timers` feature!')
return
end
if _timeoutlen == 0 then
vim.fn.timer_stop(autosave_timer)
logger.debug('disabled autosave timer!')
end
if _timeoutlen < 1000 or _timeoutlen > 60 * 100 * 1000 then
local msg =
"timeoutlen must be given in millisecods and can't be > 100*60*1000 (100 minutes) or < 1000 (1 second)"
logger.warn(msg)
return
end
vim.fn.timer_stop(autosave_timer)
autosave_timer = vim.fn.timer_start(_timeoutlen, auto_dosave, { ['repeat'] = -1 })
if vim.fn.empty(autosave_timer) == 0 then
logger.debug('setup new autosave timer, timeoutlen:' .. _timeoutlen)
end
end
local function setup_events()
if #default_opt.event > 0 then
vim.api.nvim_create_autocmd(default_opt.event, {
pattern = { '*' },
callback = auto_dosave,
})
end
end
function M.config(opt)
for option, value in pairs(default_opt) do
if opt[option] ~= nil then
logger.debug('set option`' .. option .. '` to :' .. vim.inspect(value))
default_opt[option] = value
end
end
setup_timer(default_opt.timeoutlen)
setup_events()
end
return M