view http/src/luan/modules/http/run.luan @ 498:ee55be414a34

Http.response is now mostly luan
author Franklin Schmidt <fschmidt@gmail.com>
date Mon, 18 May 2015 00:25:35 -0600
parents 55f9f74f1e55
children 92c3d22745b8
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local Luan = require "luan:Luan"
local load = Luan.load
local try = Luan.try
local Io = require "luan:Io"
local print = Io.print
local Http = require "luan:http/Http"
local String = require "luan:String"
local Html = require "luan:Html"

local function lines(s)
	local matcher = s.gmatch "([^\n]*)\n|([^\n])+$"
	return function()
		local m1, m2 = matcher()
		return m1 or m2
	end
end

local function print_with_line_numbers(s)
	i = 1
	for line in lines(s) do
		print(i,line)
		i = i + 1
	end
end

local function form() %>
<html>
	<head>
		<% Html.simply_html_head() %>
		<title>Run Luan Code</title>
	</head>
	<body>
		<center margin-top=10>
			<h3>Run Luan Code</h3>
		</center>
		<form name="form0" method="post">
			<input type="hidden" name="content_type" value="text/plain" />
			<center>
				<textarea name="code" rows="20" cols="90" wrap="off" autofocus></textarea>
			</center>
			<center margin-top=5>
				<input type="submit" value="Execute Luan Code" textcolor="white" bgcolor="#337ab7"/>
			</center>
		</form>
		<% Html.simply_html_body_bottom() %>
	</body>
</html>
<% end

function respond()
	Io.stdout = Http.response.text_writer()
	local code = Http.request.parameter.code
	if code == nil then
		form()
		return
	end
	local content_type = Http.request.parameter.content_type
	if content_type ~= nil then
		Http.response.header.content_type = content_type
	end
	local env = {
		request = Http.request;
		response = Http.response;
	}
	try {
		function()
			local run = load(code,"<web_run>",env)
			run()
		end;
		catch = function(e)
			Http.response.header.content_type = "text/plain"
			print(e)
			print()
			print()
			print_with_line_numbers(code)
		end;
	}
end