Module | Rack::Utils |
In: |
lib/rack/utils.rb
|
Rack::Utils contains a grab-bag of useful methods for writing web applications adopted from all kinds of Ruby libraries.
HTTP_STATUS_CODES | = | { 100 => 'Continue', 101 => 'Switching Protocols', 200 => 'OK', 201 => 'Created', 202 => 'Accepted', 203 => 'Non-Authoritative Information', 204 => 'No Content', 205 => 'Reset Content', 206 => 'Partial Content', 300 => 'Multiple Choices', 301 => 'Moved Permanently', 302 => 'Moved Temporarily', 303 => 'See Other', 304 => 'Not Modified', 305 => 'Use Proxy', 400 => 'Bad Request', 401 => 'Unauthorized', 402 => 'Payment Required', 403 => 'Forbidden', 404 => 'Not Found', 405 => 'Method Not Allowed', 406 => 'Not Acceptable', 407 => 'Proxy Authentication Required', 408 => 'Request Time-out', 409 => 'Conflict', 410 => 'Gone', 411 => 'Length Required', 412 => 'Precondition Failed', 413 => 'Request Entity Too Large', 414 => 'Request-URI Too Large', 415 => 'Unsupported Media Type', 500 => 'Internal Server Error', 501 => 'Not Implemented', 502 => 'Bad Gateway', 503 => 'Service Unavailable', 504 => 'Gateway Time-out', 505 => 'HTTP Version not supported' | Every standard HTTP code mapped to the appropriate message. Stolen from Mongrel. |
Performs URI escaping so that you can construct proper query strings faster. Use this rather than the cgi.rb version since it‘s faster. (Stolen from Camping).
# File lib/rack/utils.rb, line 11 11: def escape(s) 12: s.to_s.gsub(/([^ a-zA-Z0-9_.-]+)/n) { 13: '%'+$1.unpack('H2'*$1.size).join('%').upcase 14: }.tr(' ', '+') 15: end
Escape ampersands, brackets and quotes to their HTML/XML entities.
# File lib/rack/utils.rb, line 52 52: def escape_html(string) 53: string.to_s.gsub("&", "&"). 54: gsub("<", "<"). 55: gsub(">", ">"). 56: gsub("'", "'"). 57: gsub('"', """) 58: end
Stolen from Mongrel: Parses a query string by breaking it up at the ’&’ and ’;’ characters. You can also use this to parse cookies by changing the characters used in the second parameter (which defaults to ’&;’).
# File lib/rack/utils.rb, line 32 32: def parse_query(qs, d = '&;') 33: params = {} 34: (qs||'').split(/[#{d}] */n).inject(params) { |h,p| 35: k, v=unescape(p).split('=',2) 36: if cur = params[k] 37: if cur.class == Array 38: params[k] << v 39: else 40: params[k] = [cur, v] 41: end 42: else 43: params[k] = v 44: end 45: } 46: 47: return params 48: end