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d4efd44fb0
git-svn-id: https://zxing.googlecode.com/svn/trunk@1202 59b500cc-1b3d-0410-9834-0bbf25fbcc57
84 lines
2.8 KiB
C#
Executable file
84 lines
2.8 KiB
C#
Executable file
/*
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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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using System;
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using BarcodeFormat = com.google.zxing.BarcodeFormat;
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using WriterException = com.google.zxing.WriterException;
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using ByteMatrix = com.google.zxing.common.ByteMatrix;
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namespace com.google.zxing.oned
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{
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/// <summary> This object renders an EAN13 code as a ByteMatrix 2D array of greyscale
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/// values.
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///
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/// </summary>
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/// <author> aripollak@gmail.com (Ari Pollak)
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/// </author>
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/// <author>www.Redivivus.in (suraj.supekar@redivivus.in) - Ported from ZXING Java Source
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/// </author>
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public sealed class EAN13Writer:UPCEANWriter
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{
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private const int codeWidth = 3 + (7 * 6) + 5 + (7 * 6) + 3; // end guard
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public override ByteMatrix encode(System.String contents, BarcodeFormat format, int width, int height, System.Collections.Hashtable 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 sbyte[] encode(System.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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int firstDigit = System.Int32.Parse(contents.Substring(0, (1) - (0)));
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int parities = EAN13Reader.FIRST_DIGIT_ENCODINGS[firstDigit];
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sbyte[] result = new sbyte[codeWidth];
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int pos = 0;
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pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
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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 = System.Int32.Parse(contents.Substring(i, (i + 1) - (i)));
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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], 0);
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}
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pos += appendPattern(result, pos, UPCEANReader.MIDDLE_PATTERN, 0);
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for (int i = 7; i <= 12; i++)
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{
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int digit = System.Int32.Parse(contents.Substring(i, (i + 1) - (i)));
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pos += appendPattern(result, pos, UPCEANReader.L_PATTERNS[digit], 1);
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}
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pos += appendPattern(result, pos, UPCEANReader.START_END_PATTERN, 1);
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return result;
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}
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}
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} |