mirror of
https://github.com/pocoproject/poco.git
synced 2024-12-22 23:13:31 +01:00
141 lines
8.0 KiB
C++
141 lines
8.0 KiB
C++
//
|
|
// Format.h
|
|
//
|
|
// $Id: //poco/1.4/Foundation/include/Poco/Format.h#2 $
|
|
//
|
|
// Library: Foundation
|
|
// Package: Core
|
|
// Module: Format
|
|
//
|
|
// Definition of the format freestanding function.
|
|
//
|
|
// Copyright (c) 2006, Applied Informatics Software Engineering GmbH.
|
|
// and Contributors.
|
|
//
|
|
// SPDX-License-Identifier: BSL-1.0
|
|
//
|
|
|
|
|
|
#ifndef Foundation_Format_INCLUDED
|
|
#define Foundation_Format_INCLUDED
|
|
|
|
|
|
#include "Poco/Foundation.h"
|
|
#include "Poco/Any.h"
|
|
#include <vector>
|
|
|
|
|
|
namespace Poco {
|
|
|
|
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value);
|
|
/// This function implements sprintf-style formatting in a typesafe way.
|
|
/// Various variants of the function are available, supporting a
|
|
/// different number of arguments (up to six).
|
|
///
|
|
/// The formatting is controlled by the format string in fmt.
|
|
/// Format strings are quite similar to those of the std::printf() function, but
|
|
/// there are some minor differences.
|
|
///
|
|
/// The format string can consist of any sequence of characters; certain
|
|
/// characters have a special meaning. Characters without a special meaning
|
|
/// are copied verbatim to the result. A percent sign (%) marks the beginning
|
|
/// of a format specification. Format specifications have the following syntax:
|
|
///
|
|
/// %[<index>][<flags>][<width>][.<precision>][<modifier>]<type>
|
|
///
|
|
/// Index, flags, width, precision and prefix are optional. The only required part of
|
|
/// the format specification, apart from the percent sign, is the type.
|
|
///
|
|
/// The optional index argument has the format "[<n>]" and allows to
|
|
/// address an argument by its zero-based position (see the example below).
|
|
///
|
|
/// Following are valid type specifications and their meaning:
|
|
///
|
|
/// * b boolean (true = 1, false = 0)
|
|
/// * c character
|
|
/// * d signed decimal integer
|
|
/// * i signed decimal integer
|
|
/// * o unsigned octal integer
|
|
/// * u unsigned decimal integer
|
|
/// * x unsigned hexadecimal integer (lower case)
|
|
/// * X unsigned hexadecimal integer (upper case)
|
|
/// * e signed floating-point value in the form [-]d.dddde[<sign>]dd[d]
|
|
/// * E signed floating-point value in the form [-]d.ddddE[<sign>]dd[d]
|
|
/// * f signed floating-point value in the form [-]dddd.dddd
|
|
/// * s std::string
|
|
/// * z std::size_t
|
|
///
|
|
/// The following flags are supported:
|
|
///
|
|
/// * - left align the result within the given field width
|
|
/// * + prefix the output value with a sign (+ or -) if the output value is of a signed type
|
|
/// * 0 if width is prefixed with 0, zeros are added until the minimum width is reached
|
|
/// * # For o, x, X, the # flag prefixes any nonzero output value with 0, 0x, or 0X, respectively;
|
|
/// for e, E, f, the # flag forces the output value to contain a decimal point in all cases.
|
|
///
|
|
/// The following modifiers are supported:
|
|
///
|
|
/// * (none) argument is char (c), int (d, i), unsigned (o, u, x, X) double (e, E, f, g, G) or string (s)
|
|
/// * l argument is long (d, i), unsigned long (o, u, x, X) or long double (e, E, f, g, G)
|
|
/// * L argument is long long (d, i), unsigned long long (o, u, x, X)
|
|
/// * h argument is short (d, i), unsigned short (o, u, x, X) or float (e, E, f, g, G)
|
|
/// * ? argument is any signed or unsigned int, short, long, or 64-bit integer (d, i, o, x, X)
|
|
///
|
|
/// The width argument is a nonnegative decimal integer controlling the minimum number of characters printed.
|
|
/// If the number of characters in the output value is less than the specified width, blanks or
|
|
/// leading zeros are added, according to the specified flags (-, +, 0).
|
|
///
|
|
/// Precision is a nonnegative decimal integer, preceded by a period (.), which specifies the number of characters
|
|
/// to be printed, the number of decimal places, or the number of significant digits.
|
|
///
|
|
/// Throws an InvalidArgumentException if an argument index is out of range.
|
|
///
|
|
/// Starting with release 1.4.3, an argument that does not match the format
|
|
/// specifier no longer results in a BadCastException. The string [ERRFMT] is
|
|
/// written to the result string instead.
|
|
///
|
|
/// If there are more format specifiers than values, the format specifiers without a corresponding value
|
|
/// are copied verbatim to output.
|
|
///
|
|
/// If there are more values than format specifiers, the superfluous values are ignored.
|
|
///
|
|
/// Usage Examples:
|
|
/// std::string s1 = format("The answer to life, the universe, and everything is %d", 42);
|
|
/// std::string s2 = format("second: %[1]d, first: %[0]d", 1, 2);
|
|
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8, const Any& value9);
|
|
std::string Foundation_API format(const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8, const Any& value9, const Any& value10);
|
|
|
|
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value);
|
|
/// Appends the formatted string to result.
|
|
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8, const Any& value9);
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const Any& value1, const Any& value2, const Any& value3, const Any& value4, const Any& value5, const Any& value6, const Any& value7, const Any& value8, const Any& value9, const Any& value10);
|
|
|
|
|
|
void Foundation_API format(std::string& result, const std::string& fmt, const std::vector<Any>& values);
|
|
/// Supports a variable number of arguments and is used by
|
|
/// all other variants of format().
|
|
|
|
|
|
} // namespace Poco
|
|
|
|
|
|
#endif // Foundation_Format_INCLUDED
|