From mboxrd@z Thu Jan  1 00:00:00 1970
X-Spam-Checker-Version: SpamAssassin 3.4.4 (2020-01-24) on polar.synack.me
X-Spam-Level: 
X-Spam-Status: No, score=0.2 required=5.0 tests=BAYES_00,FREEMAIL_FROM,
	INVALID_MSGID,REPLYTO_WITHOUT_TO_CC autolearn=no autolearn_force=no
	version=3.4.4
X-Google-Language: ENGLISH,ASCII-7-bit
X-Google-Thread: 103376,7f7e3d24b1fe22fd
X-Google-Attributes: gid103376,public
From: Mats Weber <matsw@mail.com>
Subject: Re: End_Of_File does not work as expected...
Date: 2000/11/26
Message-ID: <3A20EFFD.5EE29272@mail.com>#1/1
X-Deja-AN: 697851957
Content-Transfer-Encoding: 7bit
References: <rcumv8.b93.ln@127.0.0.1>
X-Accept-Language: en,pdf
Content-Type: text/plain; charset=us-ascii
Organization: VTX Services SA
Mime-Version: 1.0
Reply-To: matsw@mail.com
Newsgroups: comp.lang.ada
Date: 2000-11-26T00:00:00+00:00
List-Id: <comp.lang.ada>

I find Jeff Carter's reply overly pedantic and paternalistic, given the
reasonable question being asked. And students are welcome to this newsgroup.

Now to the point: If you are used to C and UNIX text files, then Text_IO
is definitely something different. On some systems, (e.g. VMS) a line
terminator is not encoded as a character as it is on UNIX, but as the
end of a record. Text_IO was designed to accomodate such systems as well.

If you want to write the equivalent of UNIX's echo using Text_IO, you
must follow the complete file structure including lines and pages:

while not End_Of_File loop
   while not End_Of_Page loop
      while not End_Of_Line loop
         Get(c);
         Put(c);
      end loop;
      Skip_Line;   -- can be omitted.
      New_Line;
   end loop;
   Skip_Page;   -- can be omitted.
   New_Page;
end loop;

You can omit the page stuff if you don't need it, but you will have to
use End_Of_Line and New_Line because otherwise your output file is going
to be a single line.

Note that if you use End_Of_Page/New_Page, then you will have a page
terminator at the end of your output file even though the input file has
none. My advice: ignore pages in Text_IO.