Question

I try to write a script which takes in params:

• range of line
• range of column

For ex: cmd filename 1 5 12 87
where 1 and 5 it’s range of line
and 12 and 87 range of column

I want to extract text from these ranges.

I find something for line using head and tail but I have no idea on how i can select the corresponding columns.

Only for windows: batch, powershell.

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UPDATE 1

file.txt

define('HTTP_REQUEST_METHOD_GET',     'GET',     true);
define('HTTP_REQUEST_METHOD_HEAD',    'HEAD',    true);
define('HTTP_REQUEST_METHOD_POST',    'POST',    true);
define('HTTP_REQUEST_METHOD_PUT',     'PUT',     true);
define('HTTP_REQUEST_METHOD_DELETE',  'DELETE',  true);
define('HTTP_REQUEST_METHOD_OPTIONS', 'OPTIONS', true);
define('HTTP_REQUEST_METHOD_TRACE',   'TRACE',   true);

cmd file.txt 1 3 19 27

output:

                  ST_METHOD_GET',     'GET',     true);
define('HTTP_REQUEST_METHOD_HEAD',    'HEAD',    true);
define('HTTP_REQUEST_METHO

I add blank a first line just for better representation.

I fact the script simulate the selection of the text from line X to line Y starting at column W (just for the first line) and eding at column Z (just for the last line)

Answer 1

Try this:

Function SelectTextRange( $path, $SL, $EL, $SS , $ES)
{
  $txt = gc $path
  $txt | select -First (($EL+1)-$SL) -Skip ($SL-1) |
     % { $_.substring( ($SS-1) ,($ES-$SS+1) )}
}

I understand that columns and lines values are included values.

After your more accurate sample try this:

Function SelectTextRange( $path, $SL, $EL, $SS , $ES)
{
  $txt = gc $path
  $c = 0
  $txt[($sl+1)..($el+1)] | % { 

  if ($c -eq 0) { $_.substring($ss-1) } 
  if ($c -gt 0 -and $c -lt $txt[$sl..$el].count ) { $_}
  if ($c -eq ($txt[$sl..$el].count) ) { $_.substring(0,$es+1) } ;

  $c++
  }
}