记录log中的16进制和ASCII码字符输出

写通信程序常常需要把发出和收到的包记录到log文件，而最常用的记录方式就是16进制和ASCII码左右对照的方式，

C代码  ：

   1: short DebugASCII( char *buf1, int leng, int line)

   2: {

   3:    int i, j=0;

   4:    char s[100], temp[5];

   5:  

   6:    printf( "Debug Information from Line: %04d\n", line);

   7:  

   8:    for( i=0; i<leng; i++)

   9:    {

  10:       if ( j==0)

  11:       {

  12:          memset( s, ' ', 84);

  13:          sprintf(temp,   " %03d:",i );

  14:          memcpy( s, temp, 5);

  15:          sprintf(temp,   ":%03d",i+15 );

  16:          memcpy( &s[72], temp, 4);

  17:       }

  18:       sprintf( temp, "%02X ", (unsigned char)buf1[i]);

  19:       memcpy( &s[j*3+5+(j>7)], temp, 3);

  20:       if ( isprint( buf1[i]))

  21:       {

  22:          s[j+55+(j>7)]=buf1[i];

  23:       }

  24:       else

  25:       {

  26:          s[j+55+(j>7)]='.';

  27:       }

  28:       j++;

  29:       if ( j==16)

  30:       {

  31:          s[76]=0;

  32:          printf( "%s\n", s);

  33:          j=0;

  34:       }

  35:    }

  36:    if ( j)

  37:    {

  38:       s[76]=0;

  39:       printf( "%s\n", s);

  40:    }

  41: } 

C#代码:

   1: string ToPrintLog = LogHex ( 16, 8, message );

   2:  

   3: public static string LogHex ( int lineWidth, int spaceIndent, byte[] data )

   4: {

   5:         if ( data == null ) return null;

   6:  

   7:         string temp;

   8:         string line = String.Empty;

   9:  

  10:         StringBuilder sb = new StringBuilder ();

  11:         int j = 0;

  12:  

  13:         for ( int i = 0; i < data.Length; i++ )

  14:         {

  15:             temp = data[i].ToString ( "X2" ).PadLeft ( 2, '0' ); //0xce -> "CE"

  16:  

  17:             if ( j == 0 )

  18:                 line = temp;

  19:             else

  20:             {

  21:                 if ( (j+1) % spaceIndent == 0 )

  22:                     line = line.Insert ( ( j >= spaceIndent ) ? 2 * j + 1 : ( 2 * j ), temp+" " );

  23:                 else

  24:                     line = line.Insert ( ( j >= spaceIndent ) ? 2 * j + 1 : ( 2 * j ), temp );

  25:             }

  26:  

  27:             if ( data[i] >= 0x30 && data[i] <= 0x7E )

  28:             {

  29:                 temp=( (char)data[i] ).ToString ();

  30:             }

  31:             else

  32:             {

  33:                 temp= "." ;//invisible

  34:             }

  35:  

  36:             line = line.Insert ( line.Length, temp );

  37:  

  38:             j++;

  39:  

  40:             if ( j == lineWidth )

  41:             {

  42:                 sb.AppendLine ( line );

  43:  

  44:                 j = 0;

  45:  

  46:                 line = String.Empty;

  47:             }

  48:             else

  49:             {

  50:                 if ( i == data.Length - 1 )

  51:                 {

  52:                     int comCount = 1;

  53:  

  54:                     if ( j >= spaceIndent )

  55:                         comCount = 2 * lineWidth - 2 * j+1;

  56:                     else

  57:                         comCount = 2 * lineWidth - 2 * j +2;

  58:  

  59:                     for ( int m = 0; m < comCount; m++ )

  60:                     {

  61:                         line = line.Insert ( ( j >= spaceIndent ) ? 2 * j +1 : ( 2 * j ), " " );

  62:                     }

  63:                     sb.AppendLine ( line );

  64:                 }

  65:             }

  66:         }

  67:         return sb.ToString();

  68: }

输出结果样例：

   1: 14A654A 20476459 14A654A 20476459   .JeJ .GdY .JeJ .GdY 

   2: 6646A49 20202020 6646A49 20202020   edjI .... edjI .... 

   3: 21F4A65 4A204764 21F4A65 4A204764   ..Je J.Gd ..Je J.Gd 

   4: 565646A 49203130 565646A 49203130   Yedj I.10 Yedj I.10 

   5: 2202020 20202020 2202020 20202020   .... .... .... ....