Utils-class function

Class Utils

A convenience object for working with various aspects of web requests and responses. 1.1

class

See Also

Multipart.

Examples

Utils$bytesize('foo')
Utils$escape('foo bar')
Utils$unescape('foo+bar')
Utils$escape_html('foo <bar>')
Utils$escape('foo <bar>')
Utils$escape('foo\n<bar>')
Utils$status_code('OK')
Utils$status_code('Found')
Utils$status_code('Not Found')
x <- Utils$parse_query('foo=1&bar=baz')
x
Utils$rfc2822(Sys.time())
Utils$timezero()
Utils$build_query(x)
rm(x)

Methods

• bytesize(string=NULL):: Returns size in bytes for string, a character vector.
• unescape(s=NULL):: returns the url decoded value of the character vector s. Also replaces the '+' character with a space.
• status_code(status=NULL):: returns integer value for the given HTTP status, which can either be numeric or or a character vector describing the status. Returns as.integer(500) if status is NULL.
• escape_html(string=NULL):: replaces "&", "<", ">", "'", and '"' with entity equivalents.
• raw.match(needle=NULL, haystack=NULL, all=TRUE):: returns index position of needle in haystack. All matched indexes are returned by default. needle is either a raw vector or character string. haystack is a raw vector.
• parse_query(qs=NULL, d=DEFAULT_SEP):: Creates a named list from the the query string qs. d is the separator value and defaults to '[&;] *'.
• rfc2822(ts=NULL):: Formats ts in RFC2822 time. ts must be a POSIXt object.
• escape(s=NULL):: Transforms any non-printable characters found in s to their percent-encoded equivalents.
• build_query(params=NULL):: Creates a query string from the named list given in params.
• timezero():: Returns a POSIXct object set to UNIX epoch.
• set_cookie_header(header, key, value, expires, path, domain, secure,httpOnly):: Sets an HTTP cookie header in the environment header. All arguments except expires are length 1 character vectors, while expires must be a POSIXct object.
• delete_cookie_header(header, key, value, expires, path, domain, secure,httpOnly):: Deletes the HTTP cookie header.