/*
 * Copyright 2012 ZXing authors
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

@class ZXParsedResult, ZXResult;

/**
 * Abstract class representing the result of decoding a barcode, as more than
 * a String -- as some type of structured data. This might be a subclass which represents
 * a URL, or an e-mail address. parseResult() will turn a raw
 * decoded string into the most appropriate type of structured representation.
 *
 * Thanks to Jeff Griffin for proposing rewrite of these classes that relies less
 * on exception-based mechanisms during parsing.
 */
@interface ZXResultParser : NSObject

/**
 * Attempts to parse the raw ZXResult's contents as a particular type
 * of information (email, URL, etc.) and return a ZXParsedResult encapsulating
 * the result of parsing.
 */
- (ZXParsedResult *)parse:(ZXResult *)result;

+ (NSString *)massagedText:(ZXResult *)result;
+ (ZXParsedResult *)parseResult:(ZXResult *)theResult;
- (void)maybeAppend:(NSString *)value result:(NSMutableString *)result;
- (void)maybeAppendArray:(NSArray *)value result:(NSMutableString *)result;
- (NSArray *)maybeWrap:(NSString *)value;
+ (BOOL)isStringOfDigits:(NSString *)value length:(unsigned int)length;
+ (BOOL)isSubstringOfDigits:(NSString *)value offset:(int)offset length:(int)length;
+ (int)parseHexDigit:(unichar)c;
- (NSMutableDictionary *)parseNameValuePairs:(NSString *)uri;
+ (NSString *)urlDecode:(NSString *)encoded;
+ (NSArray *)matchPrefixedField:(NSString *)prefix rawText:(NSString *)rawText endChar:(unichar)endChar trim:(BOOL)trim;
+ (NSString *)matchSinglePrefixedField:(NSString *)prefix rawText:(NSString *)rawText endChar:(unichar)endChar trim:(BOOL)trim;

@end
