ClickHouse/base/poco/Foundation/include/Poco/Format.h

//
// Format.h
//
// 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 <vector>
#include "Poco/Any.h"
#include "Poco/Foundation.h"


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