(unknown charset) Re: [BLACKBOX] ARRAY as CONSTANT

From: (unknown charset) Oleg N. Cher <"Oleg>
Date: Wed, 13 Feb 2008 12:38:13 +0200

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Dear igor,

>You can put your data into strings.

Yes, you're RIGHT.
But BB compiler does not allow to put binary data
(concretely symbol 0X) into a string. Please check:

MODULE Show;
IMPORT StdLog;

PROCEDURE InitString (a: ARRAY OF SHORTCHAR);
BEGIN
        StdLog.Int(LEN(a))
END InitString;

PROCEDURE Do*;
BEGIN
        InitString(0X + 0X + 0X + "a" + 0X + 0X)
    (* ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ Length of this string is 2
               We checks LEN(a), not LEN(a$) ! *)
END Do;

BEGIN
END Show.

>
  Symbol 0X simply ignored by compiler.
And I did a conclusion that all strings in BlackBox
are null-terminated, and cannot contain superfluous nulls.
It means we never can save binary information into strings.


Oleg N. Cher,
Colossoft Research.
allot{([at]})nowhere.xy
2008-02-13

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Received on Wed Feb 13 2008 - 11:38:13 UTC