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(* WholeStr.mod implement the ISO WholeStr specification.
Copyright (C) 2008-2023 Free Software Foundation, Inc.
Contributed by Gaius Mulley <gaius.mulley@southwales.ac.uk>.
This file is part of GNU Modula-2.
GNU Modula-2 is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3, or (at your option)
any later version.
GNU Modula-2 is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
Under Section 7 of GPL version 3, you are granted additional
permissions described in the GCC Runtime Library Exception, version
3.1, as published by the Free Software Foundation.
You should have received a copy of the GNU General Public License and
a copy of the GCC Runtime Library Exception along with this program;
see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
<http://www.gnu.org/licenses/>. *)
IMPLEMENTATION MODULE WholeStr ;
FROM DynamicStrings IMPORT String, KillString, CopyOut ;
FROM StringConvert IMPORT CardinalToString, IntegerToString ;
FROM WholeConv IMPORT FormatCard, ValueCard, FormatInt, ValueInt ;
(* the string form of a signed whole number is
["+" | "-"], decimal digit, {decimal digit}
*)
PROCEDURE StrToInt (str: ARRAY OF CHAR; VAR int: INTEGER;
VAR res: ConvResults);
(* Ignores any leading spaces in str. If the subsequent
characters in str are in the format of a signed whole
number, assigns a corresponding value to int. Assigns
a value indicating the format of str to res.
*)
BEGIN
res := FormatInt(str) ;
IF res=strAllRight
THEN
int := ValueInt(str)
END
END StrToInt ;
PROCEDURE IntToStr (int: INTEGER; VAR str: ARRAY OF CHAR);
(* Converts the value of int to string form and copies
the possibly truncated result to str. *)
VAR
s: String ;
BEGIN
s := IntegerToString(int, 0, ' ', TRUE, 10, FALSE) ;
CopyOut(str, s) ;
s := KillString(s)
END IntToStr ;
(* the string form of an unsigned whole number is
decimal digit, {decimal digit}
*)
PROCEDURE StrToCard (str: ARRAY OF CHAR;
VAR card: CARDINAL;
VAR res: ConvResults);
(* Ignores any leading spaces in str. If the subsequent
characters in str are in the format of an unsigned
whole number, assigns a corresponding value to card.
Assigns a value indicating the format of str to res.
*)
BEGIN
res := FormatCard(str) ;
IF res=strAllRight
THEN
card := ValueCard(str)
END
END StrToCard ;
PROCEDURE CardToStr (card: CARDINAL; VAR str: ARRAY OF CHAR);
(* Converts the value of card to string form and copies the
possibly truncated result to str. *)
VAR
s: String ;
BEGIN
s := CardinalToString(card, 0, ' ', 10, FALSE) ;
CopyOut(str, s) ;
s := KillString(s)
END CardToStr ;
END WholeStr.
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