Merge plugin back into main repository (#49)

plugin/src/HttpError.lua

@@ -0,0 +1,57 @@
+local HttpError = {}
+HttpError.__index = HttpError
+
+HttpError.Error = {
+	HttpNotEnabled = {
+		message = "Rojo requires HTTP access, which is not enabled.\n" ..
+			"Check your game settings, located in the 'Home' tab of Studio.",
+	},
+	ConnectFailed = {
+		message = "Rojo plugin couldn't connect to the Rojo server.\n" ..
+			"Make sure the server is running -- use 'Rojo serve' to run it!",
+	},
+	Unknown = {
+		message = "Rojo encountered an unknown error: {{message}}",
+	},
+}
+
+function HttpError.new(type, extraMessage)
+	extraMessage = extraMessage or ""
+	local message = type.message:gsub("{{message}}", extraMessage)
+
+	local err = {
+		type = type,
+		message = message,
+	}
+
+	setmetatable(err, HttpError)
+
+	return err
+end
+
+function HttpError:__tostring()
+	return self.message
+end
+
+--[[
+	This method shouldn't have to exist. Ugh.
+]]
+function HttpError.fromErrorString(err)
+	err = err:lower()
+
+	if err:find("^http requests are not enabled") then
+		return HttpError.new(HttpError.Error.HttpNotEnabled)
+	end
+
+	if err:find("^curl error") then
+		return HttpError.new(HttpError.Error.ConnectFailed)
+	end
+
+	return HttpError.new(HttpError.Error.Unknown, err)
+end
+
+function HttpError:report()
+	warn(self.message)
+end
+
+return HttpError