local http = require('http');
local url = require('url');
local items = {};
-- see Node.js_in_action.pdf : page 89 (110 of 417)
http.createServer( function(req, res)
--p(req)
if req.url=='/' then
if req.method=='GET' then
show(res);
elseif req.method=='POST' then
add(req, res);
else
badRequest(res);
end
else
notFound(res);
end
end) :listen(8080)
function map(a, fcn)
local b={}
for i,v in ipairs(a) do
table.insert(b, fcn(v))
end
return b
end
function show(res)
local html = 'Todo List\n'
.. 'Todo List
\n' -- For simple apps, inlining
.. '\n' -- the HTML instead of
.. table.concat(map(items, function(item) --using a template engine works well.
return '- ' .. item .. '
'
end),'\n')
.. '
\n'
.. '\n';
res:setHeader('Content-Type', 'text/html');
res:setHeader('Content-Length', #html);
res:finish(html);
end
function notFound(res)
res.statusCode = 404;
res:setHeader('Content-Type', 'text/plain');
res:finish('Not Found');
end
function badRequest(res)
res.statusCode = 400;
res:setHeader('Content-Type', 'text/plain');
res:finish('Bad Request');
end
local qs = require('querystring');
function add(req, res)
local body = '';
--req.setEncoding('utf8');
req:on('data', function(chunk) body =body.. chunk end);
req:on('end', function()
local obj = qs.parse(body);
--p(obj)
table.insert(items,obj.item);
show(res);
end);
end
print('Server running at http://127.0.0.1:8080/\n Connect to server using a web browser.')