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Replace character in odd or even lines

 
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Top Forums UNIX for Dummies Questions & Answers Replace character in odd or even lines
# 8  
Old 04-12-2016
I once wrote a ksh-to-HTML-script for documentation purposes. The main generation part was in awk and it might help you as a starting point for your own script. Mostly it translates special characters into their HTML equivalents and creates the alternating stripes you want:

Code:
awk 'BEGIN {
          iLineNr=0;
          iOutIdx=1;
          lColor=0;
     }
     {
          chOutStr="";
          iOutIdx=1;
          iInLen=length( $0 );
          chBuffer="";

          for( iOutIdx=1; iOutIdx <= iInLen; iOutIdx++ ) {
               chBuffer=substr( $0, iOutIdx, 1 );
               if( chBuffer == " " ) {
                    chOutStr=chOutStr "*";
               } else if( chBuffer == "\t" ) {
                    chOutStr=sprintf("%s%s", chOutStr, substr("********", 1, 6*(8-(iOutIdx%8)) ) );
               } else if( chBuffer == "\x27" ) {
                    chOutStr=chOutStr "´";
               } else if( chBuffer == "<" ) {
                    chOutStr=chOutStr "&lt;";
               } else if( chBuffer == ">" ) {
                    chOutStr=chOutStr "&gt;";
               } else if( chBuffer == "&" ) {
                    chOutStr=chOutStr "&amp;";
               } else if( chBuffer == "ä" ) {
                    chOutStr=chOutStr "&auml;";
               } else if( chBuffer == "Ä" ) {
                    chOutStr=chOutStr "&Auml;";
               } else if( chBuffer == "ö" ) {
                    chOutStr=chOutStr "&ouml;";
               } else if( chBuffer == "Ö" ) {
                    chOutStr=chOutStr "&Ouml;";
               } else if( chBuffer == "ü" ) {
                    chOutStr=chOutStr "&uuml;";
               } else if( chBuffer == "Ü" ) {
                    chOutStr=chOutStr "&Uuml;";
               } else if( chBuffer == "ß" ) {
                    chOutStr=chOutStr "&szlig;";
               } else
                    chOutStr=chOutStr chBuffer;
          }
          if( chOutStr == "" )
               chOutStr = "*";
          iLineNr++;
          printf( "                    <tr");
          if( lColor == 1 ) {
               printf( " bgcolor=#BFBFBF" );
               lColor=0
          } else {
               printf( " bgcolor=#B0B0B0" );
               lColor=1
          }
          printf( ">\n" );
          printf( "                         <td align=right>" );
          if( iLineNr % 30 == 0 )
               printf( "<a href=#top>%d</a>", iLineNr );
          else
               printf( "%d", iLineNr );

          printf( "</td>\n" );
          printf( "                         <td>*</td>\n");
          printf( "                         <td><font size=-1><code>%s</code></font></td>\n", chOutStr);
          printf( "                    </tr>\n");
     }' file

I hope this helps.

bakunin
This User Gave Thanks to bakunin For This Post:
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