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From: Dale Stanbrough <dale@goanna.cs.rmit.edu.au>
Subject: Re: Text control characters
Date: 1997/09/11
Message-ID: <5v9vj1$dge$1@goanna.cs.rmit.edu.au>#1/1
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References: <uden6xytd8.fsf@tanana.llnl.gov>
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Organization: RMIT
Newsgroups: comp.lang.ada
Date: 1997-09-11T00:00:00+00:00
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The question is

	"how can i write operating system dependent stuff in an 
	 operation independent manner"


and the answer is

	"by isolating O/S dependent stuff in a package"


package Unix.Line_Terminators is
   Line_Terminator : constant String := Ascii.LF & "";
   
end;


with Unix.Line_Terminators;
package OS.Line_Terminators is


   Line_Terminator : String renames Unix.Line_Terminators.Line_Terminator;


end;


and then get your configuration system to choose the appropriate with
(maybe even use a preprocessor! to select a with statement).

Thinking about it, the preprocessor selection of a with statement
would seem to be a fairly benign use of preprocessors. Can anyone see
any great harm in this scheme?


Dale