139 lines
3.4 KiB
C++
139 lines
3.4 KiB
C++
/*
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* (C) Copyright The MITRE Corporation 1999 All rights reserved.
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*
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* The contents of this file are subject to the Mozilla Public License
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* Version 1.0 (the "License"); you may not use this file except in
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* compliance with the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* The program provided "as is" without any warranty express or
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* implied, including the warranty of non-infringement and the implied
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* warranties of merchantibility and fitness for a particular purpose.
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* The Copyright owner will not be liable for any damages suffered by
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* you as a result of using the Program. In no event will the Copyright
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* owner be liable for any special, indirect or consequential damages or
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* lost profits even if the Copyright owner has been advised of the
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* possibility of their occurrence.
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*
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* Please see release.txt distributed with this file for more information.
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*
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*/
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#include "primitives.h"
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#include "baseutils.h"
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//-----------------------------/
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//- Implementation of Integer -/
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//-----------------------------/
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/**
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* A wrapper for the primitive int type, and provides some simple
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* integer related routines
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* @author <a href="mailto:kvisco@mitre.org">Keith Visco</a>
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**/
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/**
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* Creates a new Integer initialized to 0.
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**/
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Integer::Integer() {
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value = 0;
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} //-- Integer
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/**
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* Creates a new Integer initialized to the given int value.
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**/
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Integer::Integer(int value) {
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this->value = value;
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} //-- Integer
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/**
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* Creates a new Integer based on the value of the given String
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**/
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Integer::Integer(const String& str) {
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Int32 val = 0;
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for (Int32 i = 0; i < str.length(); i++) {
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val = (val * 10) + (str.charAt(i) - 48);
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}
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} //-- Integer
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/**
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* Returns the int value of this Integer
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**/
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Int32 Integer::intValue() {
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return value;
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} //-- intValue;
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/**
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* Converts the given String to an integer
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**/
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int Integer::intValue(const String& src) {
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int result = 0;
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Int32 idx = 0;
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int sign = 1;
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//-- trim leading whitespace
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for ( ; idx < src.length(); idx++ )
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if ( src.charAt(idx) != ' ' ) break;
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//-- check first character for sign
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if ( idx < src.length() ) {
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Int32 ch = src.charAt(idx);
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if ( ch == '-' ) {
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sign = -1;
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++idx;
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}
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}
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else {
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return 0; //-- we should return NaN here
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}
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//-- convert remaining to number
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for ( ; idx < src.length(); idx++ ) {
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Int32 ch = src.charAt(idx);
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if (( ch >= '0') && (ch <= '9')) {
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result = result*10;
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result += (ch-48);
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}
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else return 0;
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}
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result = result*sign;
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return result;
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} //-- toInteger
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/**
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* Converts the given int to a String
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**/
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String& Integer::toString(int value, String& dest) {
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String result;
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UNICODE_CHAR charDigit;
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Int32 tempVal = value;
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MBool isNegative = (value < 0);
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if ( isNegative ) tempVal = -value;
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if ( tempVal > 0 ) {
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while (tempVal) {
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charDigit = (tempVal % 10) + 48;
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result.append(charDigit);
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tempVal /=10;
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}
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if ( isNegative ) result.append('-');
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result.reverse();
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}
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else result.append('0');
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dest.append(result);
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return dest;
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} //-- toString
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/**
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* Converts the given the value of this Integer to a String
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**/
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String& Integer::toString(String& dest) {
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return Integer::toString(value, dest);
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} //-- toString
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