http.urlencode(s)

Returns a percent-encoding version of the s string.

Any character outside of alphanumeric, hyphen ('-'), underscore ('_'), dot ('.') and tilde ('~') will be converted to their hexadecimal UTF-8 representation, with each byte prefixed with a percent character ('%').

http.urldecode(s)

Performs the opposite operation as urlencode(), returns the decoded version of a percent-encoded string.

Each sequence starting with a percent character ('%') and followed with two hexadecimal numbers will be replaced with the byte it represents.

http.formencode(query)

Encodes a table into a query string. The query argument can be either an unordered map of the form { key = "value" }, or an ordered array of the form { { name = "key", value = "value"} }.

See Wikipedia for more details on query strings.

http.formdecode(query)

Decodes a query string into a table and returns it. The table can be indexed as normal, and also contains a { name = "key", value = "value" } sequence for iterating in the order the parameters were passed as.

Fields must be separated by the character '&', and each field must be of the form key=value.

See Wikipedia for more details on query strings.

http.contains_token(field, token)

Returns true if token is present in field, where field is a comma-separated string.

http.normalize_path(path, is_dir)

Makes path an absolute path, and append '/' if is_dir is true.