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159 lines
6.6 KiB
C++
159 lines
6.6 KiB
C++
//
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// NumberParser.h
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//
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// $Id: //poco/1.4/Foundation/include/Poco/NumberParser.h#1 $
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//
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// Library: Foundation
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// Package: Core
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// Module: NumberParser
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//
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// Definition of the NumberParser class.
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//
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// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
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// and Contributors.
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//
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// SPDX-License-Identifier: BSL-1.0
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//
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#ifndef Foundation_NumberParser_INCLUDED
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#define Foundation_NumberParser_INCLUDED
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#include "Poco/Foundation.h"
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#include <string>
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#undef min
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#undef max
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#include <limits>
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namespace Poco {
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class Foundation_API NumberParser
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/// The NumberParser class provides static methods
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/// for parsing numbers out of strings.
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///
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/// Note that leading or trailing whitespace is not allowed
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/// in the string. Poco::trim() or Poco::trimInPlace()
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/// can be used to remove leading or trailing whitespace.
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{
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public:
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static const unsigned short NUM_BASE_OCT = 010;
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static const unsigned short NUM_BASE_DEC = 10;
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static const unsigned short NUM_BASE_HEX = 0x10;
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static int parse(const std::string& s, char thousandSeparator = ',');
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/// Parses an integer value in decimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in decimal notation.
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static bool tryParse(const std::string& s, int& value, char thousandSeparator = ',');
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/// Parses an integer value in decimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static unsigned parseUnsigned(const std::string& s, char thousandSeparator = ',');
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/// Parses an unsigned integer value in decimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in decimal notation.
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static bool tryParseUnsigned(const std::string& s, unsigned& value, char thousandSeparator = ',');
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/// Parses an unsigned integer value in decimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static unsigned parseHex(const std::string& s);
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/// Parses an integer value in hexadecimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in
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/// hexadecimal notation.
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static bool tryParseHex(const std::string& s, unsigned& value);
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/// Parses an unsigned integer value in hexadecimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static unsigned parseOct(const std::string& s);
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/// Parses an integer value in octal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in
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/// hexadecimal notation.
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static bool tryParseOct(const std::string& s, unsigned& value);
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/// Parses an unsigned integer value in octal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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#if defined(POCO_HAVE_INT64)
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static Int64 parse64(const std::string& s, char thousandSeparator = ',');
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/// Parses a 64-bit integer value in decimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in decimal notation.
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static bool tryParse64(const std::string& s, Int64& value, char thousandSeparator = ',');
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/// Parses a 64-bit integer value in decimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static UInt64 parseUnsigned64(const std::string& s, char thousandSeparator = ',');
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/// Parses an unsigned 64-bit integer value in decimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in decimal notation.
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static bool tryParseUnsigned64(const std::string& s, UInt64& value, char thousandSeparator = ',');
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/// Parses an unsigned 64-bit integer value in decimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static UInt64 parseHex64(const std::string& s);
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/// Parses a 64 bit-integer value in hexadecimal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in hexadecimal notation.
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static bool tryParseHex64(const std::string& s, UInt64& value);
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/// Parses an unsigned 64-bit integer value in hexadecimal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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static UInt64 parseOct64(const std::string& s);
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/// Parses a 64 bit-integer value in octal notation from the given string.
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/// Throws a SyntaxException if the string does not hold a number in hexadecimal notation.
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static bool tryParseOct64(const std::string& s, UInt64& value);
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/// Parses an unsigned 64-bit integer value in octal notation from the given string.
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/// Returns true if a valid integer has been found, false otherwise.
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/// If parsing was not successful, value is undefined.
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#endif // defined(POCO_HAVE_INT64)
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static double parseFloat(const std::string& s, char decimalSeparator = '.', char thousandSeparator = ',');
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/// Parses a double value in decimal floating point notation
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/// from the given string.
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/// Throws a SyntaxException if the string does not hold a floating-point
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/// number in decimal notation.
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static bool tryParseFloat(const std::string& s, double& value, char decimalSeparator = '.', char thousandSeparator = ',');
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/// Parses a double value in decimal floating point notation
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/// from the given string.
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/// Returns true if a valid floating point number has been found,
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/// false otherwise.
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/// If parsing was not successful, value is undefined.
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static bool parseBool(const std::string& s);
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/// Parses a bool value in decimal or string notation
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/// from the given string.
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/// Valid forms are: "0", "1", "true", "on", false", "yes", "no", "off".
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/// String forms are NOT case sensitive.
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/// Throws a SyntaxException if the string does not hold a valid bool number
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static bool tryParseBool(const std::string& s, bool& value);
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/// Parses a bool value in decimal or string notation
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/// from the given string.
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/// Valid forms are: "0", "1", "true", "on", false", "yes", "no", "off".
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/// String forms are NOT case sensitive.
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/// Returns true if a valid bool number has been found,
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/// false otherwise.
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/// If parsing was not successful, value is undefined.
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};
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} // namespace Poco
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#endif // Foundation_NumberParser_INCLUDED
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