BREAKING CHANGES: plugin rewrite

lua/auto-save/utils/colors.lua

@@ -0,0 +1,70 @@
+local M = {}
+---@param hex_str string hexadecimal value of a color
+local hex_to_rgb = function(hex_str)
+	local hex = "[abcdef0-9][abcdef0-9]"
+	local pat = "^#(" .. hex .. ")(" .. hex .. ")(" .. hex .. ")$"
+	hex_str = string.lower(hex_str)
+
+	assert(string.find(hex_str, pat) ~= nil, "hex_to_rgb: invalid hex_str: " .. tostring(hex_str))
+
+	local red, green, blue = string.match(hex_str, pat)
+	return { tonumber(red, 16), tonumber(green, 16), tonumber(blue, 16) }
+end
+
+function M.highlight(group, color, force)
+	if color.link then
+		vim.api.nvim_set_hl(0, group, {
+			link = color.link,
+		})
+	else
+		if color.style then
+			for _, style in ipairs(color.style) do
+				color[style] = true
+			end
+		end
+		color.style = nil
+		if force then
+			vim.cmd("hi " .. group .. " guifg=" .. (color.fg or "NONE") .. " guibg=" .. (color.bg or "NONE"))
+			return
+		end
+		vim.api.nvim_set_hl(0, group, color)
+	end
+end
+
+function M.get_hl(name)
+	local ok, hl = pcall(vim.api.nvim_get_hl_by_name, name, true)
+	if not ok then
+		return
+	end
+	for _, key in pairs({ "foreground", "background", "special" }) do
+		if hl[key] then
+			hl[key] = string.format("#%06x", hl[key])
+		end
+	end
+	return hl
+end
+
+---@param fg string forecrust color
+---@param bg string background color
+---@param alpha number number between 0 and 1. 0 results in bg, 1 results in fg
+function M.blend(fg, bg, alpha)
+	bg = hex_to_rgb(bg)
+	fg = hex_to_rgb(fg)
+
+	local blendChannel = function(i)
+		local ret = (alpha * fg[i] + ((1 - alpha) * bg[i]))
+		return math.floor(math.min(math.max(0, ret), 255) + 0.5)
+	end
+
+	return string.format("#%02X%02X%02X", blendChannel(1), blendChannel(2), blendChannel(3))
+end
+
+function M.darken(hex, amount, bg)
+	return M.blend(hex, bg or M.bg, math.abs(amount))
+end
+
+function M.lighten(hex, amount, fg)
+	return M.blend(hex, fg or M.fg, math.abs(amount))
+end
+
+return M

lua/auto-save/utils/data.lua

@@ -0,0 +1,25 @@
+local M = {}
+
+local cnf = require("auto-save.config").options
+
+function M.set_of(list)
+	local set = {}
+	for i = 1, #list do
+		set[list[i]] = true
+	end
+	return set
+end
+
+function M.not_in(var, arr)
+	if M.set_of(arr)[var] == nil then
+		return true
+	end
+end
+
+function M.do_callback(callback_name)
+	if type(cnf.callbacks[callback_name]) == "function" then
+		cnf.callbacks[callback_name]()
+	end
+end
+
+return M

lua/auto-save/utils/echo.lua

@@ -0,0 +1,25 @@
+local TITLE = "auto-save"
+
+return function(msg, kind)
+	local has_notify_plugin = pcall(require, "notify")
+	local level = {}
+
+	if kind == "error" then
+		level.log = vim.log.levels.ERROR
+		level.type = "error"
+	elseif kind == "warn" then
+		level.log = vim.log.levels.WARN
+		level.type = "error"
+	else
+		level.log = kind or vim.log.levels.INFO
+		level.type = "info"
+	end
+
+	if has_notify_plugin then
+		vim.notify(msg, level.log, {
+			title = TITLE,
+		})
+	else
+		vim.notify(("%s (%s): %s"):format(TITLE, level.type, msg), level.log)
+	end
+end