numberparser.cpp

This software aims to create an applet and panel tools to manage a wireless interface card, such as

//
// NumberParser.cpp
//
// $Id: //poco/Main/Foundation/src/NumberParser.cpp#5 $
//
// Copyright (c) 2004, Guenter Obiltschnig/Applied Informatics.
// All rights reserved.
//
// Redistribution and use in source and binary forms, with or without
// modification, are permitted provided that the following conditions
// are met:
//
// 1. Redistributions of source code must retain the above copyright
//    notice, this list of conditions and the following disclaimer.
//
// 2. Redistributions in binary form must reproduce the above copyright
//    notice, this list of conditions and the following disclaimer in the
//    documentation and/or other materials provided with the distribution.
//
// 3. Redistributions in any form must be accompanied by information on
//    how to obtain complete source code for this software and any
//    accompanying software that uses this software.  The source code
//    must either be included in the distribution or be available for no
//    more than the cost of distribution plus a nominal fee, and must be
//    freely redistributable under reasonable conditions.  For an
//    executable file, complete source code means the source code for all
//    modules it contains.  It does not include source code for modules or
//    files that typically accompany the major components of the operating
//    system on which the executable file runs.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
// INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
// BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
// LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
// CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
// LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
// ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
// POSSIBILITY OF SUCH DAMAGE.
//


#include "Foundation/NumberParser.h"
#include "Foundation/Exception.h"
#include <stdio.h>
#include <ctype.h>


#if defined(_MSC_VER)
	#define I64_FMT "I64"
#elif defined(__APPLE__) 
	#define I64_FMT "q"
#else
	#define I64_FMT "ll"
#endif


Foundation_BEGIN


int NumberParser::parse(const std::string& s)
{
	int result;
	if (tryParse(s, result))
		return result;
	else
		throw SyntaxException("Not a valid integer", s);
}


bool NumberParser::tryParse(const std::string& s, int& value)
{
	return sscanf(s.c_str(), "%d", &value) == 1;
}


unsigned NumberParser::parseUnsigned(const std::string& s)
{
	unsigned result;
	if (tryParseUnsigned(s, result))
		return result;
	else
		throw SyntaxException("Not a valid unsigned integer", s);
}


bool NumberParser::tryParseUnsigned(const std::string& s, unsigned& value)
{
	return sscanf(s.c_str(), "%u", &value) == 1;
}


unsigned NumberParser::parseHex(const std::string& s)
{
	unsigned result;
	if (tryParseHex(s, result))
		return result;
	else
		throw SyntaxException("Not a valid hexadecimal integer", s);
}


bool NumberParser::tryParseHex(const std::string& s, unsigned& value)
{
	return sscanf(s.c_str(), "%x", &value) == 1;
}


#if defined(POCO_HAVE_INT64)


Int64 NumberParser::parse64(const std::string& s)
{
	Int64 result;
	if (tryParse64(s, result))
		return result;
	else
		throw SyntaxException("Not a valid integer", s);
}


bool NumberParser::tryParse64(const std::string& s, Int64& value)
{
	return sscanf(s.c_str(), "%"I64_FMT"d", &value) == 1;
}


UInt64 NumberParser::parseUnsigned64(const std::string& s)
{
	UInt64 result;
	if (tryParseUnsigned64(s, result))
		return result;
	else
		throw SyntaxException("Not a valid unsigned integer", s);
}


bool NumberParser::tryParseUnsigned64(const std::string& s, UInt64& value)
{
	 return sscanf(s.c_str(), "%"I64_FMT"u", &value) == 1;
}


UInt64 NumberParser::parseHex64(const std::string& s)
{
	UInt64 result;
	if (tryParseHex64(s, result))
		return result;
	else
		throw SyntaxException("Not a valid hexadecimal integer", s);
}


bool NumberParser::tryParseHex64(const std::string& s, UInt64& value)
{
	return sscanf(s.c_str(), "%"I64_FMT"x", &value) == 1;
}


#endif // defined(POCO_HAVE_INT64)


double NumberParser::parseFloat(const std::string& s)
{
	double result;
	if (tryParseFloat(s, result))
		return result;
	else
		throw SyntaxException("Not a valid floating-point number", s);
}

	
bool NumberParser::tryParseFloat(const std::string& s, double& value)
{
	return sscanf(s.c_str(), "%lf", &value) == 1;
}


Foundation_END