Output a string representation of the HTTP status code in the HTTP operation log. Add RKStringFromStatusCode convenience method to the HTTP utilities

Code/ObjectMapping/RKHTTPUtilities.h

@@ -78,9 +78,15 @@ NSRange RKStatusCodeRangeForClass(RKStatusCodeClass statusCodeClass);
  */
 NSIndexSet *RKStatusCodeIndexSetForClass(RKStatusCodeClass statusCodeClass);
 
-// TODO: Implement these guys...
-//NSString * RKStringFromStatusCode(NSInteger statusCode);
-//NSInteger RKStatusCodeFromString(NSString *statusCode);
+/**
+ Returns string representation of a given HTTP status code.
+ 
+ The list of supported status codes was built from http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
+ 
+ @param statusCode The HTTP status code to return a string from.
+ @return A string representation of the given status code.
+ */
+NSString *RKStringFromStatusCode(NSInteger statusCode);
 
 /**
  Parse HTTP Date: http://www.w3.org/Protocols/rfc2616/rfc2616-sec3.html#sec3.3.1

Code/ObjectMapping/RKHTTPUtilities.m

@@ -59,6 +59,97 @@ RKRequestMethod RKRequestMethodFromString(NSString *methodName)
     else                                              return RKRequestMethodInvalid;
 }
 
+// Built from http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
+static NSDictionary *RKStatusCodesToNamesDictionary()
+{
+    static NSDictionary *statusCodesToNamesDictionary = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        statusCodesToNamesDictionary = @{
+        // 1xx (Informational)
+        @(100): @"Continue",
+        @(101): @"Switching Protocols",
+        @(102): @"Processing",
+        
+        // 2xx (Success)
+        @(200): @"OK",
+        @(201): @"Created",
+        @(202): @"Accepted",
+        @(203): @"Non-Authoritative Information",
+        @(204): @"No Content",
+        @(205): @"Reset Content",
+        @(206): @"Partial Content",
+        @(207): @"Multi-Status",
+        @(208): @"Already Reported",
+        @(226): @"IM Used",
+        
+        // 3xx (Redirection)
+        @(300): @"Multiple Choices",
+        @(301): @"Moved Permanently",
+        @(302): @"Found",
+        @(303): @"See Other",
+        @(304): @"Not Modified",
+        @(305): @"Use Proxy",
+        @(306): @"Switch Proxy",
+        @(307): @"Temporary Redirect",
+        @(308): @"Permanent Redirect",
+        
+        // 4xx (Client Error)
+        @(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 Timeout",
+        @(409): @"Conflict",
+        @(410): @"Gone",
+        @(411): @"Length Required",
+        @(412): @"Precondition Failed",
+        @(413): @"Request Entity Too Large",
+        @(414): @"Request-URI Too Long",
+        @(415): @"Unsupported Media Type",
+        @(416): @"Requested Range Not Satisfiable",
+        @(417): @"Expectation Failed",
+        @(418): @"I'm a teapot",
+        @(420): @"Enhance Your Calm",
+        @(422): @"Unprocessable Entity",
+        @(423): @"Locked",
+        @(424): @"Failed Dependency",
+        @(424): @"Method Failure",
+        @(425): @"Unordered Collection",
+        @(426): @"Upgrade Required",
+        @(428): @"Precondition Required",
+        @(429): @"Too Many Requests",
+        @(431): @"Request Header Fields Too Large",
+        @(451): @"Unavailable For Legal Reasons",
+        
+        // 5xx (Server Error)
+        @(500): @"Internal Server Error",
+        @(501): @"Not Implemented",
+        @(502): @"Bad Gateway",
+        @(503): @"Service Unavailable",
+        @(504): @"Gateway Timeout",
+        @(505): @"HTTP Version Not Supported",
+        @(506): @"Variant Also Negotiates",
+        @(507): @"Insufficient Storage",
+        @(508): @"Loop Detected",
+        @(509): @"Bandwidth Limit Exceeded",
+        @(510): @"Not Extended",
+        @(511): @"Network Authentication Required",
+        };
+    });
+    return statusCodesToNamesDictionary;
+}
+
+NSString * RKStringFromStatusCode(NSInteger statusCode)
+{
+    return [RKStatusCodesToNamesDictionary() objectForKey:@(statusCode)];
+}
+
+
 /**
  Below is ragel source used to compile those tables. The output was polished / pretty-printed and tweaked from ragel.
  As the generated code is "hard" to debug, we store the code in http-date.r1