mirror of
https://github.com/zxing/zxing.git
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7616c4d06d
git-svn-id: https://zxing.googlecode.com/svn/trunk@2558 59b500cc-1b3d-0410-9834-0bbf25fbcc57
102 lines
3.4 KiB
C#
Executable file
102 lines
3.4 KiB
C#
Executable file
using System;
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using System.Collections.Generic;
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/*
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* Copyright 2009 ZXing authors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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namespace com.google.zxing.oned
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{
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using BarcodeFormat = com.google.zxing.BarcodeFormat;
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using EncodeHintType = com.google.zxing.EncodeHintType;
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using FormatException = com.google.zxing.FormatException;
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using WriterException = com.google.zxing.WriterException;
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using BitMatrix = com.google.zxing.common.BitMatrix;
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/// <summary>
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/// This object renders an EAN13 code as a <seealso cref="BitMatrix"/>.
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///
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/// @author aripollak@gmail.com (Ari Pollak)
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/// </summary>
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public sealed class EAN13Writer : UPCEANWriter
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{
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private const int CODE_WIDTH = 3 + (7 * 6) + 5 + (7 * 6) + 3; // end guard - right bars - middle guard - left bars - start guard
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//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
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//ORIGINAL LINE: public com.google.zxing.common.BitMatrix encode(String contents, com.google.zxing.BarcodeFormat format, int width, int height, java.util.Map<com.google.zxing.EncodeHintType,?> hints) throws com.google.zxing.WriterException
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public override BitMatrix encode(string contents, BarcodeFormat format, int width, int height, IDictionary<EncodeHintType, object> hints)
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{
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if (format != BarcodeFormat.EAN_13)
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{
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throw new System.ArgumentException("Can only encode EAN_13, but got " + format);
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}
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return base.encode(contents, format, width, height, hints);
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}
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public override bool[] encode(string contents)
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{
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if (contents.Length != 13)
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{
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throw new System.ArgumentException("Requested contents should be 13 digits long, but got " + contents.Length);
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}
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try
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{
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if (!UPCEANReader.checkStandardUPCEANChecksum(contents))
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{
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throw new System.ArgumentException("Contents do not pass checksum");
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}
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}
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catch (FormatException fe)
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{
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throw new System.ArgumentException("Illegal contents");
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}
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int firstDigit = Convert.ToInt32(contents.Substring(0, 1));
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int parities = EAN13Reader.FIRST_DIGIT_ENCODINGS[firstDigit];
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bool[] result = new bool[CODE_WIDTH];
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int pos = 0;
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pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
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// See {@link #EAN13Reader} for a description of how the first digit & left bars are encoded
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for (int i = 1; i <= 6; i++)
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{
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int digit = Convert.ToInt32(contents.Substring(i, 1));
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if ((parities >> (6 - i) & 1) == 1)
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{
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digit += 10;
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}
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pos += appendPattern(result, pos, UPCEANReader.L_AND_G_PATTERNS[digit], false);
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}
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pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, false);
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for (int i = 7; i <= 12; i++)
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{
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int digit = Convert.ToInt32(contents.Substring(i, 1));
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pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], true);
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}
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pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, true);
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return result;
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}
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}
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} |