ean128与code128 条形码 算法分析

时间：2023-03-09 20:17:05
ean128与code128 条形码 算法分析

【code128条形码组成】

除终止符（STOP）由13个模块组成外，其他字符均由11个模块组成

就是说,如果用‘1’表示黑线(实模块),用‘0’表示白线(空模块)，那么每表示一个字符就需要11条线，也就是11个模块。

在条码字符中，每三个条和三个空组成一个字符，终止符有四个条和三个空组成。
就是说，这11条线的颜色，是依据一定的规则将其分布于三个黑线区和三个白线区，当然是黑白相间的。就像这样：
            11100110100,11011011000。具体的编码要参照码表，查找对应的字符或编码。
【code128码表】其中b=>black代表黑线，s=>space代表白线
ID Code128A Code128B Code128C BandCode 编码值
0 SP　 SP 0 212222 bbsbbssbbss
1 ! ! 1 222122 bbssbbsbbss
2 " " 2 222221 bbssbbssbbs
3 # # 3 121223 bssbssbbsss
4 $ $ 4 121322 bssbsssbbss
5 % % 5 131222 bsssbssbbss
6 & & 6 122213 bssbbssbsss
7 ' ' 7 122312 bssbbsssbss
8 ( ( 8 132212 bsssbbssbss
9 ) ) 9 221213 bbssbssbsss
10 * * 10 221312 bbssbsssbss
11 + + 11 231212 bbsssbssbss
12 , , 12 112232 bsbbssbbbss
13 - - 13 122132 bssbbsbbbss
14 . . 14 122231 bssbbssbbbs
15 / / 15 113222 bsbbbssbbss
16 0 0 16 123122 bssbbbsbbss
17 1 1 17 123221 bssbbbssbbs
18 2 2 18 223211 bbssbbbssbs
19 3 3 19 221132 bbssbsbbbss
20 4 4 20 221231 bbssbssbbbs
21 5 5 21 213212 bbsbbbssbss
22 6 6 22 223112 bbssbbbsbss
23 7 7 23 312131 bbbsbbsbbbs
24 8 8 24 311222 bbbsbssbbss
25 9 9 25 321122 bbbssbsbbss
26 : : 26 321221 bbbssbssbbs
27 ; ; 27 312212 bbbsbbssbss
28 < < 28 322112 bbbssbbsbss
29 = = 29 322211 bbbssbbssbs
30 > > 30 212123 bbsbbsbbsss
31 ? ? 31 212321 bbsbbsssbbs
32 @ @ 32 232121 bbsssbbsbbs
33 A A 33 111323 bsbsssbbsss
34 B B 34 131123 bsssbsbbsss
35 C C 35 131321 bsssbsssbbs
36 D D 36 112313 bsbbsssbsss
37 E E 37 132113 bsssbbsbsss
38 F F 38 132311 bsssbbsssbs
39 G G 39 211313 bbsbsssbsss
40 H H 40 231113 bbsssbsbsss
41 I I 41 231311 bbsssbsssbs
42 J J 42 112133 bsbbsbbbsss
43 K K 43 112331 bsbbsssbbbs
44 L L 44 132131 bsssbbsbbbs
45 M M 45 113123 bsbbbsbbsss
46 N N 46 113321 bsbbbsssbbs
47 O O 47 133121 bsssbbbsbbs
48 P P 48 313121 bbbsbbbsbbs
49 Q Q 49 211331 bbsbsssbbbs
50 R R 50 231131 bbsssbsbbbs
51 S S 51 213113 bbsbbbsbsss
52 T T 52 213311 bbsbbbsssbs
53 U U 53 213131 bbsbbbsbbbs
54 V V 54 311123 bbbsbsbbsss
55 W W 55 311321 bbbsbsssbbs
56 X X 56 331121 bbbsssbsbbs
57 Y Y 57 312113 bbbsbbsbsss
58 Z Z 58 312311 bbbsbbsssbs
59 [ [ 59 332111 bbbsssbbsbs
60 \ \ 60 314111 bbbsbbbbsbs
61 ] ] 61 221411 bbssbssssbs
62 ^ ^ 62 431111 bbbbsssbsbs
63 _ _ 63 111224 bsbssbbssss
64 NUL ` 64 111422 bsbssssbbss
65 SOH a 65 121124 bssbsbbssss
66 STX b 66 121421 bssbssssbbs
67 ETX c 67 141122 bssssbsbbss
68 EOT d 68 141221 bssssbssbbs
69 ENQ e 69 112214 bsbbssbssss
70 ACK f 70 112412 bsbbssssbss
71 BEL g 71 122114 bssbbsbssss
72 BS h 72 122411 bssbbssssbs
73 HT i 73 142112 bssssbbsbss
74 LF j 74 142211 bssssbbssbs
75 VT k 75 241211 bbssssbssbs
76 FF I 76 221114 bbssbsbssss
77 CR m 77 413111 bbbbsbbbsbs
78 SO n 78 241112 bbssssbsbss
79 SI o 79 134111 bsssbbbbsbs
80 DLE p 80 111242 bsbssbbbbss
81 DC1 q 81 121142 bssbsbbbbss
82 DC2 r 82 121241 bssbssbbbbs
83 DC3 s 83 114212 bsbbbbssbss
84 DC4 t 84 124112 bssbbbbsbss
85 NAK u 85 124211 bssbbbbssbs
86 SYN v 86 411212 bbbbsbssbss
87 ETB w 87 421112 bbbbssbsbss
88 CAN x 88 421211 bbbbssbssbs
89 EM y 89 212141 bbsbbsbbbbs
90 SUB z 90 214121 bbsbbbbsbbs
91 ESC { 91 412121 bbbbsbbsbbs
92 FS | 92 111143 bsbsbbbbsss
93 GS } 93 111341 bsbsssbbbbs
94 RS ~ 94 131141 bsssbsbbbbs
95 US DEL 95 114113 bsbbbbsbsss
96 FNC3 FNC3 96 114311 bsbbbbsssbs
97 FNC2 FNC2 97 411113 bbbbsbsbsss
98 SHIFT SHIFT 98 411311 bbbbsbsssbs
99 CODEC CODEC 99 113141 bsbbbsbbbbs
100 CODEB FNC4 CODEB 114131 bsbbbbsbbbs
101 FNC4 CODEA CODEA 311141 bbbsbsbbbbs
102 FNC1 FNC1 FNC1 411131 bbbbsbsbbbs
103 StartA StartA StartA 211412 bbsbssssbss
104 StartB StartB StartB 211214 bbsbssbssss
105 StartC StartC StartC 211232 bbsbssbbbss
106 Stop Stop Stop 2331112 bbsssbbbsbsbb

【Code128各编码方式的编码范围】

1、Code128A：标准数字和字母，控制符，特殊字符；

2、Code128B：标准数字和字母，小写字母，特殊字符；

3、Code128C/EAN128：[00]-[99]的数字对集合，共100个，即只能表示偶数位长度的数字。

【Code128编码规则】：开始位 ＋ ［FNC1(为EAN128码时加)］ ＋ 数据位 ＋ 检验位 ＋ 结束位

【Code128检验位计算】：（开始位对应的ID值 ＋ 每位数据在整个数据中的位置×每位数据对应的ID值）% 103

编码类型 开始位 FNC1
Code128A StartA 无　　
Code128B StartB 无
Code128C StartC 无
Ean128 StartC FNC1

【C#代码】

 using System;

 using System.Data;

 using System.Collections.Generic;

 using System.Text;

 using System.Drawing;

 namespace XXXX.Common

 {

     /// <summary>

     /// 生成Code128A,Code128B,Code128C,EAN128条码

     /// </summary>

     public class BarCode

     {

         /// <summary>

         /// 生成条形码

         /// </summary>

         /// <param name="barNumber">条形码，位数必须为2的倍数</param>

         public void CreateBarCode(string barNumber)

         {

             if (barNumber.Length %  == ) barNumber = "" + barNumber;

             Code128 code = new Code128();

             //code.ValueFont = new Font("Arial", 9); //显示条码文字字体

             code.Height = ;

             Bitmap image = code.GetCodeImage(barNumber, Common.BarCode.Code128.Encode.Code128C);

             image.Save(System.Web.HttpContext.Current.Response.OutputStream, System.Drawing.Imaging.ImageFormat.Gif);

         }

         public class Code128

         {

             private DataTable m_Code128 = new DataTable();

             private uint m_Height = ;

             ///&nbsp;<summary>

             ///&nbsp;高度

             ///&nbsp;</summary>

             public uint Height { get { return m_Height; } set { m_Height = value; } }

             private Font m_ValueFont = null;

             ///&nbsp;<summary>

             ///&nbsp;是否显示可见号码&nbsp;如果为NULL不显示号码

             ///&nbsp;</summary>

             public Font ValueFont { get { return m_ValueFont; } set { m_ValueFont = value; } }

             private byte m_Magnify = ;

             ///&nbsp;<summary>

             ///&nbsp;放大倍数

             ///&nbsp;</summary>

             public byte Magnify { get { return m_Magnify; } set { m_Magnify = value; } }

             ///&nbsp;<summary>

             ///&nbsp;条码类别

             ///&nbsp;</summary>

             public enum Encode

             {

                 Code128A,

                 Code128B,

                 Code128C,

                 EAN128

             }

             /// <summary>

             /// 数据表

             /// </summary>

             public Code128()

             {

                 m_Code128.Columns.Add("ID");

                 m_Code128.Columns.Add("Code128A");

                 m_Code128.Columns.Add("Code128B");

                 m_Code128.Columns.Add("Code128C");

                 m_Code128.Columns.Add("BandCode");

                 m_Code128.CaseSensitive = true;

                 #region&nbsp;数据表

                 m_Code128.Rows.Add("", "&nbsp;", "&nbsp;", "", "");

                 m_Code128.Rows.Add("", "!", "!", "", "");

                 m_Code128.Rows.Add("", "\"", "\"", "", "");

                 m_Code128.Rows.Add("", "#", "#", "", "");

                 m_Code128.Rows.Add("", "$", "$", "", "");

                 m_Code128.Rows.Add("", "%", "%", "", "");

                 m_Code128.Rows.Add("", "&", "&", "", "");

                 m_Code128.Rows.Add("", "'", "'", "", "");

                 m_Code128.Rows.Add("", "(", "(", "", "");

                 m_Code128.Rows.Add("", ")", ")", "", "");

                 m_Code128.Rows.Add("", "*", "*", "", "");

                 m_Code128.Rows.Add("", "+", "+", "", "");

                 m_Code128.Rows.Add("", ",", ",", "", "");

                 m_Code128.Rows.Add("", "-", "-", "", "");

                 m_Code128.Rows.Add("", ".", ".", "", "");

                 m_Code128.Rows.Add("", "/", "/", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", "", "", "", "");

                 m_Code128.Rows.Add("", ":", ":", "", "");

                 m_Code128.Rows.Add("", ";", ";", "", "");

                 m_Code128.Rows.Add("", "<", "<", "", "");

                 m_Code128.Rows.Add("", "=", "=", "", "");

                 m_Code128.Rows.Add("", ">", ">", "", "");

                 m_Code128.Rows.Add("", "?", "?", "", "");

                 m_Code128.Rows.Add("", "@", "@", "", "");

                 m_Code128.Rows.Add("", "A", "A", "", "");

                 m_Code128.Rows.Add("", "B", "B", "", "");

                 m_Code128.Rows.Add("", "C", "C", "", "");

                 m_Code128.Rows.Add("", "D", "D", "", "");

                 m_Code128.Rows.Add("", "E", "E", "", "");

                 m_Code128.Rows.Add("", "F", "F", "", "");

                 m_Code128.Rows.Add("", "G", "G", "", "");

                 m_Code128.Rows.Add("", "H", "H", "", "");

                 m_Code128.Rows.Add("", "I", "I", "", "");

                 m_Code128.Rows.Add("", "J", "J", "", "");

                 m_Code128.Rows.Add("", "K", "K", "", "");

                 m_Code128.Rows.Add("", "L", "L", "", "");

                 m_Code128.Rows.Add("", "M", "M", "", "");

                 m_Code128.Rows.Add("", "N", "N", "", "");

                 m_Code128.Rows.Add("", "O", "O", "", "");

                 m_Code128.Rows.Add("", "P", "P", "", "");

                 m_Code128.Rows.Add("", "Q", "Q", "", "");

                 m_Code128.Rows.Add("", "R", "R", "", "");

                 m_Code128.Rows.Add("", "S", "S", "", "");

                 m_Code128.Rows.Add("", "T", "T", "", "");

                 m_Code128.Rows.Add("", "U", "U", "", "");

                 m_Code128.Rows.Add("", "V", "V", "", "");

                 m_Code128.Rows.Add("", "W", "W", "", "");

                 m_Code128.Rows.Add("", "X", "X", "", "");

                 m_Code128.Rows.Add("", "Y", "Y", "", "");

                 m_Code128.Rows.Add("", "Z", "Z", "", "");

                 m_Code128.Rows.Add("", "[", "[", "", "");

                 m_Code128.Rows.Add("", "\\", "\\", "", "");

                 m_Code128.Rows.Add("", "]", "]", "", "");

                 m_Code128.Rows.Add("", "^", "^", "", "");

                 m_Code128.Rows.Add("", "_", "_", "", "");

                 m_Code128.Rows.Add("", "NUL", "`", "", "");

                 m_Code128.Rows.Add("", "SOH", "a", "", "");

                 m_Code128.Rows.Add("", "STX", "b", "", "");

                 m_Code128.Rows.Add("", "ETX", "c", "", "");

                 m_Code128.Rows.Add("", "EOT", "d", "", "");

                 m_Code128.Rows.Add("", "ENQ", "e", "", "");

                 m_Code128.Rows.Add("", "ACK", "f", "", "");

                 m_Code128.Rows.Add("", "BEL", "g", "", "");

                 m_Code128.Rows.Add("", "BS", "h", "", "");

                 m_Code128.Rows.Add("", "HT", "i", "", "");

                 m_Code128.Rows.Add("", "LF", "j", "", "");

                 m_Code128.Rows.Add("", "VT", "k", "", "");

                 m_Code128.Rows.Add("", "FF", "I", "", "");

                 m_Code128.Rows.Add("", "CR", "m", "", "");

                 m_Code128.Rows.Add("", "SO", "n", "", "");

                 m_Code128.Rows.Add("", "SI", "o", "", "");

                 m_Code128.Rows.Add("", "DLE", "p", "", "");

                 m_Code128.Rows.Add("", "DC1", "q", "", "");

                 m_Code128.Rows.Add("", "DC2", "r", "", "");

                 m_Code128.Rows.Add("", "DC3", "s", "", "");

                 m_Code128.Rows.Add("", "DC4", "t", "", "");

                 m_Code128.Rows.Add("", "NAK", "u", "", "");

                 m_Code128.Rows.Add("", "SYN", "v", "", "");

                 m_Code128.Rows.Add("", "ETB", "w", "", "");

                 m_Code128.Rows.Add("", "CAN", "x", "", "");

                 m_Code128.Rows.Add("", "EM", "y", "", "");

                 m_Code128.Rows.Add("", "SUB", "z", "", "");

                 m_Code128.Rows.Add("", "ESC", "{", "", "");

                 m_Code128.Rows.Add("", "FS", "|", "", "");

                 m_Code128.Rows.Add("", "GS", "}", "", "");

                 m_Code128.Rows.Add("", "RS", "~", "", "");

                 m_Code128.Rows.Add("", "US", "DEL", "", "");

                 m_Code128.Rows.Add("", "FNC3", "FNC3", "", "");

                 m_Code128.Rows.Add("", "FNC2", "FNC2", "", "");

                 m_Code128.Rows.Add("", "SHIFT", "SHIFT", "", "");

                 m_Code128.Rows.Add("", "CODEC", "CODEC", "", "");

                 m_Code128.Rows.Add("", "CODEB", "FNC4", "CODEB", "");

                 m_Code128.Rows.Add("", "FNC4", "CODEA", "CODEA", "");

                 m_Code128.Rows.Add("", "FNC1", "FNC1", "FNC1", "");

                 m_Code128.Rows.Add("", "StartA", "StartA", "StartA", "");

                 m_Code128.Rows.Add("", "StartB", "StartB", "StartB", "");

                 m_Code128.Rows.Add("", "StartC", "StartC", "StartC", "");

                 m_Code128.Rows.Add("", "Stop", "Stop", "Stop", "");

                 #endregion

             }

             ///&nbsp;<summary>

             ///&nbsp;获取128图形

             ///&nbsp;</summary>

             ///&nbsp;<param&nbsp;name="p_Text">文字</param>

             ///&nbsp;<param&nbsp;name="p_Code">编码</param>

             ///&nbsp;<returns>图形</returns>

             public Bitmap GetCodeImage(string p_Text, Encode p_Code)

             {

                 string _ViewText = p_Text;

                 string _Text = "";

                 IList<int> _TextNumb = new List<int>();

                 int _Examine = ;&nbsp;//首位

                 switch (p_Code)

                 {

                     case Encode.Code128C:

                         _Examine = ;

                         if (!((p_Text.Length & ) == )) throw new Exception("128C长度必须是偶数");

                         while (p_Text.Length != )

                         {

                             int _Temp = ;

                             try

                             {

                                 int _CodeNumb128 = Int32.Parse(p_Text.Substring(, ));

                             }

                             catch

                             {

                                 throw new Exception("128C必须是数字！");

                             }

                             _Text += GetValue(p_Code, p_Text.Substring(, ), ref&nbsp;_Temp);

                             _TextNumb.Add(_Temp);

                             p_Text = p_Text.Remove(, );

                         }

                         break;

                     case Encode.EAN128:

                         _Examine = ;

                         if (!((p_Text.Length & ) == )) throw new Exception("EAN128长度必须是偶数");

                         _TextNumb.Add();

                         _Text += "";

                         while (p_Text.Length != )

                         {

                             int _Temp = ;

                             try

                             {

                                 int _CodeNumb128 = Int32.Parse(p_Text.Substring(, ));

                             }

                             catch

                             {

                                 throw new Exception("128C必须是数字！");

                             }

                             _Text += GetValue(Encode.Code128C, p_Text.Substring(, ), ref&nbsp;_Temp);

                             _TextNumb.Add(_Temp);

                             p_Text = p_Text.Remove(, );

                         }

                         break;

                     default:

                         if (p_Code == Encode.Code128A)

                         {

                             _Examine = ;

                         }

                         else

                         {

                             _Examine = ;

                         }

                         while (p_Text.Length != )

                         {

                             int _Temp = ;

                             string _ValueCode = GetValue(p_Code, p_Text.Substring(, ), ref&nbsp;_Temp);

                             if (_ValueCode.Length == ) throw new Exception("无效的字符集!" + p_Text.Substring(, ).ToString());

                             _Text += _ValueCode;

                             _TextNumb.Add(_Temp);

                             p_Text = p_Text.Remove(, );

                         }

                         break;

                 }

                 if (_TextNumb.Count == ) throw new Exception("错误的编码,无数据");

                 _Text = _Text.Insert(, GetValue(_Examine));&nbsp;//获取开始位

                 for (int i = ; i != _TextNumb.Count; i++)

                 {

                     _Examine += _TextNumb[i] * (i + );

                 }

                 _Examine = _Examine % ;&nbsp;//获得严效位

                 _Text += GetValue(_Examine);&nbsp;//获取严效位

                 _Text += "";&nbsp;//结束位

                 Bitmap _CodeImage = GetImage(_Text);

                 GetViewText(_CodeImage, _ViewText);

                 return _CodeImage;

             }

             ///&nbsp;<summary>

             ///&nbsp;获取目标对应的数据

             ///&nbsp;</summary>

             ///&nbsp;<param&nbsp;name="p_Code">编码</param>

             ///&nbsp;<param&nbsp;name="p_Value">数值&nbsp;A&nbsp;b&nbsp;30</param>

             ///&nbsp;<param&nbsp;name="p_SetID">返回编号</param>

             ///&nbsp;<returns>编码</returns>

             private string GetValue(Encode p_Code, string p_Value, ref&nbsp;int p_SetID)

             {

                 if (m_Code128 == null) return "";

                 DataRow[] _Row = m_Code128.Select(p_Code.ToString() + "='" + p_Value + "'");

                 if (_Row.Length != ) throw new Exception("错误的编码" + p_Value.ToString());

                 p_SetID = Int32.Parse(_Row[]["ID"].ToString());

                 return _Row[]["BandCode"].ToString();

             }

             ///&nbsp;<summary>

             ///&nbsp;根据编号获得条纹

             ///&nbsp;</summary>

             ///&nbsp;<param&nbsp;name="p_CodeId"></param>

             ///&nbsp;<returns></returns>

             private string GetValue(int p_CodeId)

             {

                 DataRow[] _Row = m_Code128.Select("ID='" + p_CodeId.ToString() + "'");

                 if (_Row.Length != ) throw new Exception("验效位的编码错误" + p_CodeId.ToString());

                 return _Row[]["BandCode"].ToString();

             }

             ///&nbsp;<summary>

             ///&nbsp;获得条码图形

             ///&nbsp;</summary>

             ///&nbsp;<param&nbsp;name="p_Text">文字</param>

             ///&nbsp;<returns>图形</returns>

             private Bitmap GetImage(string p_Text)

             {

                 char[] _Value = p_Text.ToCharArray();

                 int _Width = ;

                 for (int i = ; i != _Value.Length; i++)

                 {

                     _Width += Int32.Parse(_Value[i].ToString()) * (m_Magnify + );

                 }

                 Bitmap _CodeImage = new Bitmap(_Width, (int)m_Height);

                 Graphics _Garphics = Graphics.FromImage(_CodeImage);

                 //Pen&nbsp;_Pen;

                 int _LenEx = ;

                 for (int i = ; i != _Value.Length; i++)

                 {

                     int _ValueNumb = Int32.Parse(_Value[i].ToString()) * (m_Magnify + );&nbsp;//获取宽和放大系数

                     if (!((i & ) == ))

                     {

                         //_Pen&nbsp;=&nbsp;new&nbsp;Pen(Brushes.White,&nbsp;_ValueNumb);

                         _Garphics.FillRectangle(Brushes.White, new Rectangle(_LenEx, , _ValueNumb, (int)m_Height));

                     }

                     else

                     {

                         //_Pen&nbsp;=&nbsp;new&nbsp;Pen(Brushes.Black,&nbsp;_ValueNumb);

                         _Garphics.FillRectangle(Brushes.Black, new Rectangle(_LenEx, , _ValueNumb, (int)m_Height));

                     }

                     //_Garphics.(_Pen,&nbsp;new&nbsp;Point(_LenEx,&nbsp;0),&nbsp;new&nbsp;Point(_LenEx,&nbsp;m_Height));

                     _LenEx += _ValueNumb;

                 }

                 _Garphics.Dispose();

                 return _CodeImage;

             }

             ///&nbsp;<summary>

             ///&nbsp;显示可见条码文字&nbsp;如果小于40&nbsp;不显示文字

             ///&nbsp;</summary>

             ///&nbsp;<param&nbsp;name="p_Bitmap">图形</param>

             private void GetViewText(Bitmap p_Bitmap, string p_ViewText)

             {

                 if (m_ValueFont == null) return;

                 Graphics _Graphics = Graphics.FromImage(p_Bitmap);

                 SizeF _DrawSize = _Graphics.MeasureString(p_ViewText, m_ValueFont);

                 if (_DrawSize.Height > p_Bitmap.Height -  || _DrawSize.Width > p_Bitmap.Width)

                 {

                     _Graphics.Dispose();

                     return;

                 }

                 int _StarY = p_Bitmap.Height - (int)_DrawSize.Height;

                 _Graphics.FillRectangle(Brushes.White, new Rectangle(, _StarY, p_Bitmap.Width, (int)_DrawSize.Height));

                 _Graphics.DrawString(p_ViewText, m_ValueFont, Brushes.Black, , _StarY);

             }

         }

     }

 }

code128

[代码转自]http://blog.csdn.net/anchenyanyue/article/details/7666284

现实中很多现有的代码库有code128码，但是没有ean128码，所以根据算法我们也可以很容易添加ean128.

一下是在barcodelib添加ean128的代码，这边只有code128部分,就当作是扩展吧 【BarcodeLibExtend下载】

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