Shell Programming and Scripting

Hey all,

Fist post, so be kind... I have written an expect script which logs into a terminal and gathers several screens of information. Unfortunately the log file gives me all the special escape and control characters from the terminal. I am hoping to use a combination of shell scripting, sed, and awk to clean it up and retain the spacing. I have cleaned the output to the point where it is in the following format:

01A03;10HANALOG LINE;32HTN793;40HB;41H;43H000017;54H01;57H02;60H03;63H04;66H05;69H06;72H07;75H08
;54H09;57H10;60H11;63H12;66H13;69H14;72H15;75H16
;54H17;57H18;60H19;63H20;66H21;69H22;72H23;75H24

The ;numberH portion of the line indicates where the cursor should start writing the next portion of text. So what I want to do is insert the correct number of spaces where this information is.

Here is the way I figure the logic should go. Each of the values between the ; and H need to have 1 subtracted from them because the value is actually the position of the first character. Then, starting from the end of the line, the value needs to have the previous value and the number of characters subtracted, in order to find the number of spaces between the words. It should ultimately look like this:

Code:

01A03    ANALOG LINE              TN793B  000017     01 02 03 04 05 06 07 08
                                                     09 10 11 12 13 14 15 16
                                                     17 18 19 20 21 22 23 24

Hope this all makes sense, Thanks in advance for your help!

It's from zsh command line, but it's better, of course, put it in a script:

Code:

% perl -ne '
@F = split /(;\d+H[^;]*)/;
$cur = 0;
for (@F) {
  /(;(\d+)H)?([^;]*)/;
  $s = " " x ($2-$cur-1) . $3;
  $cur += length $s;
  print $s;
}
' testfile
01A03    ANALOG LINE           TN793   B  000017     01 02 03 04 05 06 07 08
                                                     09 10 11 12 13 14 15 16
                                                     17 18 19 20 21 22 23 24