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|
--
-- This file is part of LEM, a Lua Event Machine.
-- Copyright 2011-2013 Emil Renner Berthing
-- Copyright 2012 Asbjørn Sloth Tønnesen
--
-- LEM is free software: you can redistribute it and/or modify it
-- under the terms of the GNU Lesser General Public License as
-- published by the Free Software Foundation, either version 3 of
-- the License, or (at your option) any later version.
--
-- LEM is distributed in the hope that it will be useful, but
-- WITHOUT ANY WARRANTY; without even the implied warranty of
-- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-- GNU Lesser General Public License for more details.
--
-- You should have received a copy of the GNU Lesser General Public
-- License along with LEM. If not, see <http://www.gnu.org/licenses/>.
--
local format = string.format
local httpserv = require 'lem.http.server'
local httpresp = require 'lem.http.response'
local M = {}
function M.debug() end
do
local lookup = {}
M.lookup = lookup
function M.GET(path, handler)
local entry = lookup[path]
if entry then
entry['HEAD'] = handler
entry['GET'] = handler
else
entry = {
['HEAD'] = handler,
['GET'] = handler,
}
lookup[path] = entry
end
end
do
local function static_setter(method)
return function(path, handler)
local entry = lookup[path]
if entry then
entry[method] = handler
else
lookup[path] = { [method] = handler }
end
end
end
M.POST = static_setter('POST')
M.PUT = static_setter('PUT')
M.DELETE = static_setter('DELETE')
M.OPTIONS = static_setter('OPTIONS')
end
function M.GETM(pattern, handler)
local i = 1
while true do
local entry = lookup[i]
if entry == nil then
lookup[i] = { pattern,
['GET'] = handler,
['HEAD'] = handler
}
break
end
if entry[1] == pattern then
entry['GET'] = handler
entry['HEAD'] = handler
break
end
i = i + 1
end
end
do
local function match_setter(method)
return function(pattern, handler)
local i = 1
while true do
local entry = lookup[i]
if entry == nil then
lookup[i] = { pattern, [method] = handler }
break
end
if entry[1] == pattern then
entry[method] = handler
break
end
i = i + 1
end
end
end
M.POSTM = match_setter('POST')
M.PUTM = match_setter('PUT')
M.DELETEM = match_setter('DELETE')
M.OPTIONSM = match_setter('OPTIONS')
end
local function check_match(entry, req, res, ok, ...)
if not ok then return false end
local handler = entry[req.method]
if handler then
handler(req, res, ok, ...)
else
httpresp.method_not_allowed(req, res)
end
return true
end
local function handler(req, res)
local method, path = req.method, req.path
M.debug('info', format("%s %s HTTP/%s", method, req.uri, req.version))
local entry = lookup[path]
if entry then
local handler = entry[method]
if handler then
handler(req, res)
else
httpresp.method_not_allowed(req, res)
end
else
local i = 0
repeat
i = i + 1
local entry = lookup[i]
if not entry then
httpresp.not_found(req, res)
break
end
until check_match(entry, req, res, path:match(entry[1]))
end
end
function M.Hathaway(host, port)
local server, err
if port then
server, err = httpserv.new(host, port, handler)
else
server, err = httpserv.new(host, handler)
end
if not server then M.debug('new', err) return nil, err end
M.server = server
server.debug = M.debug
local ok, err = server:run()
if not ok and err ~= 'interrupted' then
M.debug('run', err)
return nil, err
end
return true
end
end
function M.import(env)
if not env then
env = _G
end
env.GET = M.GET
env.POST = M.POST
env.PUT = M.PUT
env.DELETE = M.DELETE
env.OPTIONS = M.OPTIONS
env.GETM = M.GETM
env.POSTM = M.POSTM
env.PUTM = M.PUTM
env.DELETEM = M.DELETEM
env.OPTIONSM = M.OPTIONSM
env.Hathaway = M.Hathaway
end
return M
-- vim: ts=2 sw=2 noet:
|
