OpenEuphoria

1. ed.ex Bug/error in function clean(sequence line)

• Posted by K_D_R Jul 15, 2013
• 1238 views

I kept finding the CONTROL_CHAR inserted at the beginning of a blank line in my source code, when loading a dos file. The CONTROL_CHAR remained, even after saving the file after selecting the option to convert the file to LINUX line endings.

function clean(sequence line) 
-- replace control characters with a graphics character 
-- Linux: replace CR-LF with LF (for now) 
   integer c 
	 
   if line[$] != '\n' then 
	line &= '\n' 
   end if 
	 
   ifdef UNIX  then 
 
      --if length(line) > 2 and line[$-1] = '\r' then  --<= ERROR ? 
      if length(line) > 1 and line[$-1] = '\r' then -- seems to work correctly              
 
       -- DOS file: remove CR 
	    cr_removed = TRUE 
	    line = line[1..$-2] & '\n' 
	end if 
   end ifdef 
	 
  for i = 1 to length(line)-1 do 
        c = line[i] 
	if c < SAFE_CHAR and c != '\t' then 
	   line[i] = CONTROL_CHAR  -- replace with displayable character 
	   control_chars = TRUE 
	end if 
  end for 
return line 
end function