| (* Copyright (C) 2008 Free Software Foundation, Inc. *) | |
| (* 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 2, 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. | |
| You should have received a copy of the GNU General Public License along | |
| with gm2; see the file COPYING. If not, write to the Free Software | |
| Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. *) | |
| IMPLEMENTATION MODULE strparam ; | |
| (* | |
| FROM ASCII IMPORT nul ; | |
| FROM StrLib IMPORT StrLen, StrRemoveWhitePrefix ; | |
| *) | |
| PROCEDURE toint (a: ARRAY OF CHAR; VAR x: INTEGER) ; | |
| BEGIN | |
| x := 0 | |
| END toint ; | |
| (* | |
| VAR | |
| i : CARDINAL ; | |
| ok, | |
| Negative : BOOLEAN ; | |
| higha : CARDINAL ; | |
| BEGIN | |
| StrRemoveWhitePrefix(a, a) ; | |
| higha := StrLen(a) ; | |
| i := 0 ; | |
| Negative := FALSE ; | |
| ok := TRUE ; | |
| WHILE ok DO | |
| IF i<higha | |
| THEN | |
| IF a[i]='-' | |
| THEN | |
| INC(i) ; | |
| Negative := NOT Negative | |
| ELSIF (a[i]<'0') OR (a[i]>'9') | |
| THEN | |
| INC(i) | |
| ELSE | |
| ok := FALSE | |
| END | |
| ELSE | |
| ok := FALSE | |
| END | |
| END ; | |
| x := 0 ; | |
| IF i<higha | |
| THEN | |
| ok := TRUE ; | |
| REPEAT | |
| IF Negative | |
| THEN | |
| x := 10*x - INTEGER(ORD(a[i])-ORD('0')) | |
| ELSE | |
| x := 10*x + INTEGER(ORD(a[i])-ORD('0')) | |
| END ; | |
| IF i<higha | |
| THEN | |
| INC(i) ; | |
| IF (a[i]<'0') OR (a[i]>'9') | |
| THEN | |
| ok := FALSE | |
| END | |
| ELSE | |
| ok := FALSE | |
| END | |
| UNTIL NOT ok ; | |
| END | |
| END toint ; | |
| *) | |
| END strparam. |