Split init.lua into separate files (Part I)

etc/common.lua

@@ -0,0 +1,211 @@
+local modpath = core.get_modpath "i3"
+local item_compression = core.settings:get_bool("i3_item_compression", true)
+local reg_items, translate = core.registered_items, core.get_translated_string
+
+local fmt, find, gmatch, match, sub, split, lower =
+	string.format, string.find, string.gmatch, string.match,
+	string.sub, string.split, string.lower
+
+local function reset_compression(data)
+	data.alt_items = nil
+	data.expand = ""
+end
+
+local function search(data)
+	reset_compression(data)
+
+	local filter = data.filter
+	local opt = "^(.-)%+([%w_]+)=([%w_,]+)"
+	local search_filter = next(i3.search_filters) and match(filter, opt)
+	local filters = {}
+
+	if search_filter then
+		search_filter = search_filter:trim()
+
+		for filter_name, values in gmatch(filter, sub(opt, 6)) do
+			if i3.search_filters[filter_name] then
+				values = split(values, ",")
+				filters[filter_name] = values
+			end
+		end
+	end
+
+	local filtered_list, c = {}, 0
+
+	for i = 1, #data.items_raw do
+		local item = data.items_raw[i]
+		local def = core.registered_items[item]
+		local desc = lower(translate(data.lang_code, def and def.description)) or ""
+		local search_in = fmt("%s %s", item, desc)
+		local temp, j, to_add = {}, 1
+
+		if search_filter then
+			for filter_name, values in pairs(filters) do
+				if values then
+					local func = i3.search_filters[filter_name]
+					to_add = (j > 1 and temp[item] or j == 1) and
+						func(item, values) and (search_filter == "" or
+						find(search_in, search_filter, 1, true))
+
+					if to_add then
+						temp[item] = true
+					end
+
+					j = j + 1
+				end
+			end
+		else
+			local ok = true
+
+			for keyword in gmatch(filter, "%S+") do
+				if not find(search_in, keyword, 1, true) then
+					ok = nil
+					break
+				end
+			end
+
+			if ok then
+				to_add = true
+			end
+		end
+
+		if to_add then
+			c = c + 1
+			filtered_list[c] = item
+		end
+	end
+
+	data.items = filtered_list
+end
+
+local function table_merge(t1, t2, hash)
+	t1 = t1 or {}
+	t2 = t2 or {}
+
+	if hash then
+		for k, v in pairs(t2) do
+			t1[k] = v
+		end
+	else
+		local c = #t1
+
+		for i = 1, #t2 do
+			c = c + 1
+			t1[c] = t2[i]
+		end
+	end
+
+	return t1
+end
+
+local function is_group(item)
+	return sub(item, 1, 6) == "group:"
+end
+
+local function extract_groups(str)
+	if sub(str, 1, 6) == "group:" then
+		return split(sub(str, 7), ",")
+	end
+end
+
+local function item_has_groups(item_groups, groups)
+	for i = 1, #groups do
+		local group = groups[i]
+		if (item_groups[group] or 0) == 0 then return end
+	end
+
+	return true
+end
+
+local function show_item(def)
+	return def and def.groups.not_in_creative_inventory ~= 1 and
+		def.description and def.description ~= ""
+end
+
+local function groups_to_items(groups, get_all)
+	if not get_all and #groups == 1 then
+		local group = groups[1]
+		local stereotype = i3.group_stereotypes[group]
+		local def = reg_items[stereotype]
+
+		if show_item(def) then
+			return stereotype
+		end
+	end
+
+	local names = {}
+
+	for name, def in pairs(reg_items) do
+		if show_item(def) and item_has_groups(def.groups, groups) then
+			if get_all then
+				names[#names + 1] = name
+			else
+				return name
+			end
+		end
+	end
+
+	return get_all and names or ""
+end
+
+local function apply_recipe_filters(recipes, player)
+	for _, filter in pairs(i3.recipe_filters) do
+		recipes = filter(recipes, player)
+	end
+
+	return recipes
+end
+
+local function compression_active(data)
+	return item_compression and not next(i3.recipe_filters) and data.filter == ""
+end
+
+local function compressible(item, data)
+	return compression_active(data) and i3.compress_groups[item]
+end
+
+local function is_str(x)
+	return type(x) == "string"
+end
+
+local function true_str(str)
+	return is_str(str) and str ~= ""
+end
+
+local function is_fav(favs, query_item)
+	local fav, i
+	for j = 1, #favs do
+		if favs[j] == query_item then
+			fav = true
+			i = j
+			break
+		end
+	end
+
+	return fav, i
+end
+
+return {
+	init = {
+		is_str,
+		show_item,
+		reset_compression,
+	},
+
+	progressive = {
+		search,
+		table_merge,
+		is_group,
+		extract_groups,
+		item_has_groups,
+		apply_recipe_filters,
+	},
+
+	gui = {
+		groups_to_items,
+		compression_active,
+		compressible,
+		true_str,
+		is_fav,
+	},
+}