--[[ Copyright 2015 The Luvit Authors. All Rights Reserved. Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS-IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. --]] local exports = {} exports.name = "luvit/querystring" exports.version = "1.0.2" exports.license = "Apache 2" exports.homepage = "https://github.com/luvit/luvit/blob/master/deps/querystring.lua" exports.description = "Node-style query-string codec for luvit" exports.tags = {"luvit", "url", "codec"} local find = string.find local gsub = string.gsub local char = string.char local byte = string.byte local format = string.format local match = string.match local gmatch = string.gmatch function exports.urldecode(str) str = gsub(str, '+', ' ') str = gsub(str, '%%(%x%x)', function(h) return char(tonumber(h, 16)) end) str = gsub(str, '\r\n', '\n') return str end function exports.urlencode(str) if str then str = gsub(str, '\n', '\r\n') str = gsub(str, '([^%w])', function(c) return format('%%%02X', byte(c)) end) end return str end local function stringifyPrimitive(v) return tostring(v) end function exports.stringify(params, sep, eq) if not sep then sep = '&' end if not eq then eq = '=' end if type(params) == "table" then local fields = {} for key,value in pairs(params) do local keyString = exports.urlencode(stringifyPrimitive(key)) .. eq if type(value) == "table" then for _, v in ipairs(value) do table.insert(fields, keyString .. exports.urlencode(stringifyPrimitive(v))) end else table.insert(fields, keyString .. exports.urlencode(stringifyPrimitive(value))) end end return table.concat(fields, sep) end return '' end -- parse querystring into table. urldecode tokens function exports.parse(str, sep, eq) if not sep then sep = '&' end if not eq then eq = '=' end local vars = {} for pair in gmatch(tostring(str), '[^' .. sep .. ']+') do if not find(pair, eq) then vars[exports.urldecode(pair)] = '' else local key, value = match(pair, '([^' .. eq .. ']*)' .. eq .. '(.*)') if key then key = exports.urldecode(key) value = exports.urldecode(value) local type = type(vars[key]) if type=='nil' then vars[key] = value elseif type=='table' then table.insert(vars[key], value) else vars[key] = {vars[key],value} end end end end return vars end return exports