first commit

UICaboodle/UCString.h

@@ -0,0 +1,42 @@
+#ifndef UICABOODLE_UCSTRING_H
+#define UICABOODLE_UCSTRING_H
+
+#import <Foundation/NSString.h>
+
+@interface NSString (UIKit)
+- (NSString *) stringByAddingPercentEscapes;
+- (NSString *) stringByReplacingCharacter:(unsigned short)arg0 withCharacter:(unsigned short)arg1;
+@end
+
+@interface NSString (UICaboodle)
++ (NSString *) stringWithDataSize:(double)size;
+- (NSString *) stringByAddingPercentEscapesIncludingReserved;
+@end
+
+@implementation NSString (UICaboodle)
+
++ (NSString *) stringWithDataSize:(double)size {
+    unsigned power = 0;
+    while (size > 1024) {
+        size /= 1024;
+        ++power;
+    }
+
+    static const char *powers_[] = {"B", "KiB", "MiB", "GiB"};
+
+    return [NSString stringWithFormat:@"%.1f%s", size, powers_[power]];
+}
+
+- (NSString *) stringByAddingPercentEscapesIncludingReserved {
+    return [(id)CFURLCreateStringByAddingPercentEscapes(
+        kCFAllocatorDefault, 
+        (CFStringRef) self,
+        NULL,
+        CFSTR(";/?:@&=+$,"),
+        kCFStringEncodingUTF8
+    ) autorelease];
+}
+
+@end
+
+#endif/*UICABOODLE_UCSTRING_H*/