Re: I/O streaming with custom data transport

On Wed, 22 Nov 2006 11:39:48 +0100, Maciej Sobczak wrote:

Another issue - what about the text formatting? The standard Put(...)
procedures are quite powerful, is there any way to reuse them (or at
least their logic) with custom streams?

?

Stream-oriented I/O is unformatted per concept of. It is a stream of
elements, not even characters. Formatted I/O is when there are some things
beyond characters, like lines, columns, pages etc.

For formatted buffered I/O use strings. As a block/record/line use String.
You can find an example of string formatting library here:

http://www.dmitry-kazakov.de/ada/strings_edit.htm

For physical I/O, which is a separate issue, you can still use streams,
files, sockets, whatsoever. Just define a primitive operation Write_Line on
the abstract type of the "recipient," which takes String argument. For all
further types of objects use that primitive operation.

--
Regards,
Dmitry A. Kazakov
http://www.dmitry-kazakov.de
.

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