BREAKING CHANGES: plugin rewrite

lua/auto-save/init.lua

@@ -0,0 +1,149 @@
+local M = {}
+
+local cnf = require("auto-save.config").options
+local callback = require("auto-save.utils.data").do_callback
+local colors = require("auto-save.utils.colors")
+local echo = require("auto-save.utils.echo")
+local autosave_running
+local api = vim.api
+local g = vim.g
+local fn = vim.fn
+local cmd = vim.cmd
+local o = vim.o
+
+api.nvim_create_augroup("AutoSave", {
+	clear = true,
+})
+
+local global_vars = {}
+
+local function set_buf_var(buf, name, value)
+    if buf == nil then
+        global_vars[name] = value
+    else
+        api.nvim_buf_set_var(buf, 'autosave_' .. name, value)
+    end
+end
+
+local function get_buf_var(buf, name)
+    if buf == nil then
+        return global_vars[name]
+    end
+    local success, mod = pcall(api.nvim_buf_get_var, buf, 'autosave_' .. name)
+    return success and mod or nil
+end
+
+local function debounce(lfn, duration)
+	local function inner_debounce()
+        local buf = api.nvim_get_current_buf()
+		if not get_buf_var(buf, 'queued') then
+			vim.defer_fn(function()
+                set_buf_var(buf, 'queued', false)
+				lfn(buf)
+			end, duration)
+            set_buf_var(buf, 'queued', true)
+		end
+	end
+
+	return inner_debounce
+end
+
+function M.save(buf)
+	buf = buf or api.nvim_get_current_buf()
+
+	callback("before_asserting_save")
+
+	if cnf.condition(buf) == false then
+		return
+	end
+
+	if not api.nvim_buf_get_option(buf, 'modified') then
+		return
+	end
+
+	callback("before_saving")
+
+	if g.auto_save_abort == true then
+		return
+	end
+
+	if cnf.write_all_buffers then
+		cmd("silent! wall")
+	else
+		api.nvim_buf_call(buf, function () cmd("silent! write") end)
+	end
+
+	callback("after_saving")
+
+	api.nvim_echo({ { (type(cnf.execution_message.message) == "function" and cnf.execution_message.message() or cnf.execution_message.message), 'AutoSaveText' } }, true, {})
+	if cnf.execution_message.cleaning_interval > 0 then
+		fn.timer_start(
+			cnf.execution_message.cleaning_interval,
+			function()
+				cmd([[echon '']])
+			end
+		)
+	end
+end
+
+local save_func = (cnf.debounce_delay > 0 and debounce(M.save, cnf.debounce_delay) or M.save)
+
+local function perform_save()
+	g.auto_save_abort = false
+	save_func()
+end
+
+function M.on()
+	api.nvim_create_autocmd(cnf.trigger_events, {
+		callback = function()
+			perform_save()
+		end,
+		pattern = "*",
+		group = "AutoSave",
+	})
+
+	api.nvim_create_autocmd("VimEnter", {
+		callback = function()
+			if cnf.execution_message.dim > 0 then
+				MSG_AREA = colors.get_hl("MsgArea")
+				MSG_AREA.background = (MSG_AREA.background or colors.get_hl("Normal")["background"])
+				local foreground = (
+					o.background == "dark" and
+						colors.darken((MSG_AREA.background or "#000000"), cnf.execution_message.dim, MSG_AREA.foreground) or
+						colors.lighten((MSG_AREA.background or "#ffffff"), cnf.execution_message.dim, MSG_AREA.foreground)
+					)
+
+				colors.highlight("AutoSaveText", { fg = foreground })
+			end
+		end,
+		once = true,
+		group = "AutoSave",
+	})
+
+	callback("enabling")
+	autosave_running = true
+end
+
+function M.off()
+
+	api.nvim_create_augroup("AutoSave", {
+		clear = true,
+	})
+
+	callback("disabling")
+	autosave_running = false
+end
+
+function M.toggle()
+	if autosave_running then
+		M.off()
+	else
+		M.on()
+	end
+end
+
+function M.setup(custom_opts)
+	require("auto-save.config").set_options(custom_opts)
+end
+
+return M