OpenEuphoria

Re: saving Excel data as a file to read in program

• Posted by "Juergen Luethje" <j.lue at gmx.de> Oct 03, 2004
• 441 views

Craig Welch wrote:

> Derek Parnell wrote:

<snip>

> Excel saves text files with CR *and* NL.

This is the standard on DOS and Windows. But on Linux, only '\n' is used
to denote a new line.
Does that mean that all our programs, which read and write text files,
are not cross-platform compatible, if we don't explicitly take care of
'\r' and '\n' anywhere? Fortunately, no! Euphoria handles this for us.

In %EUDIR%/HTML/lib_h_o.htm#open (Eu 2.4) it reads:
"Output to *text* files will have carriage-return characters
automatically added before linefeed characters. On input, these
carriage-return characters are removed."

> Might I suggest changing the routine as follows?

In the following code, Derek used
   open(..., "r")
i.e. he opened the file in *text* mode. So the above considerations
apply. Derek's code is correct IMHO.

> }}}
<eucode>
> global function ReadTextFile(sequence pFileName)
>      sequence lLines
>      object lNextLine
>      integer fh
>
>      lLines = {}
>      fh = open(pFileName, "r")
>      if fh = -1 then
>          return -1
>      end if
>
>      lNextLine = gets(fh)
>      while sequence(lNextLine) do
> --      if lNextLine[length(lNextLine)] = '\n' then
> -- 		Don't include any trailing newline.
> --          lLines = append(lLines, lNextLine[1..length(lNextLine)-1])
> --      else
> --          lLines = append(lLines, lNextLine)
> --      end if
>
> --******************** Added CW 9/9/4 ******************
> 	while lNextLine[length(lNextLine)] = '\n' or 			
> lNextLine[length(lNextLine)] = '\r' do
> 		lNextLine = lNextLine[1..length(lNextLine)-1]
> 	end while
> 	lLines = append(lLines, lNextLine)
> --******************************************************
>
>          lNextLine = gets(fh)
>      end while
>
>      close(fh)
>
>      return lLines
> end function
> </eucode>
{{{


Regards,
   Juergen

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