nvrmnd/neturl

URL and Query string parser, builder, normalizer for Lua

A Robust URL Parser and Builder for Lua

This small Lua library provides a few functions to parse URL with querystring and build new URL easily.

> url = require'neturl'

Querystring parser

The library supports brackets in querystrings, like PHP. It means you can use brackets to build multi-dimensional tables. The parsed querystring has a tostring() helper. As usual with Lua, if no index is specified, it starts from index 1.

> query = url.parseQuery("first=abc&a[]=123&a[]=false&b[]=str&c[]=3.5&a[]=last")
> = query
a[1]=123&a[2]=false&a[3]=last&b[1]=str&c[1]=3.5&first=abc
> = query.a[1]
123

URL parser

The library converts an URL to a table of the elements as described in RFC : scheme, host, path, etc.

> u = url.parse("http://www.example.com/test/?start=10")
> = u.scheme
http
> = u.host
www.example.com
> = u.path
/test/

URL normalization

> = url.parse("http://www.FOO.com:80///foo/../foo/./bar"):normalize()
http://www.foo.com/foo/bar

URL resolver

URL resolution follows the examples provided in the RFC 2396.

> = url.parse("http://a/b/c/d;p?q"):resolve("../../g")
http://a/g

Querystring builder

> u = url.parse("http://www.example.com")
> u.query.foo = "bar"
> = u
http://www.example.com/?foo=bar