//
//  Copyright (c) 2017 Open Whisper Systems. All rights reserved.
//

@interface NSString (Util)

/// The utf-8 encoding of the string's text.
- (NSData *)encodedAsUtf8;
/// The ascii encoding of the string's text.
/// Throws when the string contains non-ascii characters.
- (NSData *)encodedAsAscii;
- (NSRegularExpression *)toRegularExpression;
- (NSString *)withMatchesAgainst:(NSRegularExpression *)regex replacedBy:(NSString *)replacement;
- (bool)containsAnyMatches:(NSRegularExpression *)regex;
- (NSString *)withPrefixRemovedElseNull:(NSString *)prefix;

- (NSDictionary *)decodedAsJsonIntoDictionary;

- (NSNumber *)tryParseAsDecimalNumber;
- (NSNumber *)tryParseAsUnsignedInteger;
- (NSString *)removeAllCharactersIn:(NSCharacterSet *)characterSet;
- (NSString *)digitsOnly;
- (NSString *)withCharactersInRange:(NSRange)range replacedBy:(NSString *)substring;

@end