Added GUID String

FCUtilities/NSDate+FCUtilities.h

@@ -0,0 +1,14 @@
+//
+//  NSDate+FCUtilities.h
+//  Part of FCUtilities by Marco Arment (Added NSDate Luke Durrant). See included LICENSE file for BSD license.
+//
+
+
+#import <Foundation/Foundation.h>
+// Also requires libz to be linked, but "@import libz;" doesn't work, presumably because it's not a full-fledged framework
+
+@interface NSDate (FCUtilities)
+
++(NSDate *)fc_dateWithDotNetJSONString:(NSString *)string;
+-(NSString*)fc_DateString;
+@end

FCUtilities/NSDate+FCUtilities.m

@@ -0,0 +1,46 @@
+//
+//  NSDate+FCUtilities.h.m
+//  Part of FCUtilities by Marco Arment (Added NSDate Luke Durrant). See included LICENSE file for BSD license.
+//
+
+#import "NSData+FCUtilities.h"
+
+@implementation NSDate (FCUtilities)
+
++(NSDate *)fc_dateWithDotNetJSONString:(NSString *)string {
+    static NSRegularExpression *dateRegEx = nil;
+    static dispatch_once_t onceToken;
+    dispatch_once(&onceToken, ^{
+        dateRegEx = [[NSRegularExpression alloc] initWithPattern:@"^\\/date\\((-?\\d++)(?:([+-])(\\d{2})(\\d{2}))?\\)\\/$" options:NSRegularExpressionCaseInsensitive error:nil];
+    });
+    NSTextCheckingResult *regexResult = [dateRegEx firstMatchInString:string options:0 range:NSMakeRange(0, [string length])];
+
+    if (regexResult) {
+        // milliseconds
+        NSTimeInterval seconds = [[string substringWithRange:[regexResult rangeAtIndex:1]] doubleValue] / 1000.0;
+        // timezone offset
+        if ([regexResult rangeAtIndex:2].location != NSNotFound) {
+            NSString *sign = [string substringWithRange:[regexResult rangeAtIndex:2]];
+            // hours
+            seconds += [[NSString stringWithFormat:@"%@%@", sign, [string substringWithRange:[regexResult rangeAtIndex:3]]] doubleValue] * 60.0 * 60.0;
+            // minutes
+            seconds += [[NSString stringWithFormat:@"%@%@", sign, [string substringWithRange:[regexResult rangeAtIndex:4]]] doubleValue] * 60.0;
+        }
+
+        return [NSDate dateWithTimeIntervalSince1970:seconds];
+    }
+    return nil;
+}
+
+-(NSString*)fc_DateString
+{
+
+    NSDateFormatter *dateFormat = [[NSDateFormatter alloc] init];
+    [dateFormat setDateFormat:@"yyyy-MM-dd'T'HH:mm:ss.SSS"];
+
+    NSString *dateStr = [dateFormat stringFromDate:self];
+
+    return dateStr;
+}
+
+@end

FCUtilities/NSString+FCUtilities.h

@@ -23,5 +23,6 @@
 - (NSString *)fc_HTMLEncodedString;
 - (NSString *)fc_hexString;
 - (NSString *)fc_MD5Digest;
++ (NSString *)fc_NewGuidString;
 
 @end

FCUtilities/NSString+FCUtilities.m

@@ -115,4 +115,12 @@ - (NSString *)fc_MD5Digest
     return stringBuffer;
 }
 
++ (NSString*)fc_NewGuidString
+{
+    NSUUID  *UUID = [NSUUID UUID];
+    NSString* stringUUID = [UUID UUIDString];
+
+    return [stringUUID lowercaseString];
+}
+
 @end