/*
 * 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.
 */

#import "ZXOneDReader.h"

extern unichar ZX_CODE39_ALPHABET[];
extern NSString *ZX_CODE39_ALPHABET_STRING;
extern const int ZX_CODE39_CHARACTER_ENCODINGS[];

@class ZXDecodeHints, ZXResult;

/**
 * Decodes Code 39 barcodes. This does not support "Full ASCII Code 39" yet.
 */
@interface ZXCode39Reader : ZXOneDReader

/**
 * Creates a reader that assumes all encoded data is data, and does not treat the final
 * character as a check digit. It will not decoded "extended Code 39" sequences.
 */
- (id)init;

/**
 * Creates a reader that can be configured to check the last character as a check digit.
 * It will not decoded "extended Code 39" sequences.
 *
 * @param usingCheckDigit if true, treat the last data character as a check digit, not
 * data, and verify that the checksum passes.
 */
- (id)initUsingCheckDigit:(BOOL)usingCheckDigit;

/**
 * Creates a reader that can be configured to check the last character as a check digit,
 * or optionally attempt to decode "extended Code 39" sequences that are used to encode
 * the full ASCII character set.
 *
 * @param usingCheckDigit if true, treat the last data character as a check digit, not
 * data, and verify that the checksum passes.
 * @param extendedMode if true, will attempt to decode extended Code 39 sequences in the
 * text.
 */
- (id)initUsingCheckDigit:(BOOL)usingCheckDigit extendedMode:(BOOL)extendedMode;

@end
