install_demos and a small fix with fs

neko.n8

@@ -19,6 +19,7 @@ function _init()
 	mkdir=mkdir,
 	rm=rm,
 	shutdown=shutdown,
+	install_demos=install_demos,
 	reboot=reboot,
 	load=load,
 	run=run,

src/api.lua

@@ -143,6 +143,7 @@ function createSandbox(lang)
 		minify = commands.minify,
 		version = commands.version,
 		pwd = commands.pwd,
+		install_demos = commands.installDemos,
 
 		pairs = pairs,
 		ipairs = ipairs,

src/commands.lua

@@ -153,29 +153,43 @@ function commands.help(a)
 		api.color(7)
 		api.print("https://github.com/egordorichev/neko8")
 		api.print("")
-		api.print("Command   Description")
-		api.print("-------   -----------")
-		api.print("ls        list files")
-		api.print("new       new cart")
-		api.print("cd        change dir")
-		api.print("mkdir     create dir")
-		api.print("rm        delete file")
-		api.print("load      load cart")
-		api.print("run       run cart")
-		api.print("reboot    reboots neko8")
-		api.print("shutdown  shutdowns neko8")
-		api.print("save      save cart")
-		api.print("edit      opens editor")
-		api.print("cls       clear screen")
-		api.print("folder    open working folder on host os")
-		api.print("pwd       display working directory")
-		api.print("version   prints neko8 version")
+		api.print("Command       Description")
+		api.print("-------       -----------")
+		api.print("install_demos intall default demos")
+		api.print("ls            list files")
+		api.print("new           new cart")
+		api.print("cd            change dir")
+		api.print("mkdir         create dir")
+		api.print("rm            delete file")
+		api.print("load          load cart")
+		api.print("run           run cart")
+		api.print("reboot        reboots neko8")
+		api.print("shutdown      shutdowns neko8")
+		api.print("save          save cart")
+		api.print("edit          opens editor")
+		api.print("cls           clear screen")
+		api.print("folder        open working folder on host os")
+		api.print("pwd           display working directory")
+		api.print("version       prints neko8 version")
 	else
 		-- TODO
 		api.print("subject " .. a[1] .. " is not found")
 	end
 end
 
+function commands.installDemos()
+	love.filesystem.createDirectory("/demos")
+	local demos = love.filesystem.getDirectoryItems("/demos")
+
+	for i, f in ipairs(demos) do
+		local n = "demos/" .. f
+
+		love.filesystem.write(
+			n, love.filesystem.read(n)
+		)
+	end
+end
+
 function commands.edit()
 	neko.cart = nil
 	api.camera(0, 0)
@@ -382,7 +396,8 @@ function commands.rm(a)
 
 	local file = resolveFile(a[1], neko.currentDirectory)
 
-	if not love.filesystem.exists(file) then
+	if not love.filesystem.exists(file)
+		or not isVisible(a[1], neko.currentDirectory) then
 		api.print(
 			"no such file", nil, nil, 14
 		)

src/neko8.lua

@@ -25,33 +25,13 @@ function neko.init()
 	initPalette()
 	initApi()
 
-	local files = love.filesystem.getDirectoryItems("/")
-	local count = 0
-
-	for i, f in ipairs(files) do
-		if isVisible(f, "/") then
-			count = count + 1
-		end
-	end
-
-	if count == 0 then
-		log.info("installing core and demos")
+	if not isVisible("neko.n8", "/") then
+		log.info("installing core")
 
 		love.filesystem.write(
 			"neko.n8",
 			love.filesystem.read("neko.n8")
 		)
-
-		love.filesystem.createDirectory("/demos")
-		local demos = love.filesystem.getDirectoryItems("/demos")
-
-		for i, f in ipairs(demos) do
-			local n = "demos/" .. f
-
-			love.filesystem.write(
-				n, love.filesystem.read(n)
-			)
-		end
 	end
 
 	editors = require "editors"