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//
// PatternFormatter.h
//
// Library: Foundation
// Package: Logging
// Module: PatternFormatter
//
// Definition of the PatternFormatter class.
//
// Copyright (c) 2004-2006, Applied Informatics Software Engineering GmbH.
// and Contributors.
//
// SPDX-License-Identifier: BSL-1.0
//
#ifndef Foundation_PatternFormatter_INCLUDED
#define Foundation_PatternFormatter_INCLUDED
#include "Poco/Foundation.h"
#include "Poco/Formatter.h"
#include "Poco/Message.h"
#include <vector>
namespace Poco {
class Foundation_API PatternFormatter: public Formatter
/// This Formatter allows for custom formatting of
/// log messages based on format patterns.
///
/// The format pattern is used as a template to format the message and
/// is copied character by character except for the following special characters,
/// which are replaced by the corresponding value.
///
/// * %s - message source
/// * %t - message text
/// * %l - message priority level (1 .. 7)
/// * %p - message priority (Fatal, Critical, Error, Warning, Notice, Information, Debug, Trace)
/// * %q - abbreviated message priority (F, C, E, W, N, I, D, T)
/// * %P - message process identifier
/// * %T - message thread name
/// * %I - message thread identifier (numeric)
/// * %N - node or host name
/// * %U - message source file path (empty string if not set)
/// * %u - message source line number (0 if not set)
/// * %w - message date/time abbreviated weekday (Mon, Tue, ...)
/// * %W - message date/time full weekday (Monday, Tuesday, ...)
/// * %b - message date/time abbreviated month (Jan, Feb, ...)
/// * %B - message date/time full month (January, February, ...)
/// * %d - message date/time zero-padded day of month (01 .. 31)
/// * %e - message date/time day of month (1 .. 31)
/// * %f - message date/time space-padded day of month ( 1 .. 31)
/// * %m - message date/time zero-padded month (01 .. 12)
/// * %n - message date/time month (1 .. 12)
/// * %o - message date/time space-padded month ( 1 .. 12)
/// * %y - message date/time year without century (70)
/// * %Y - message date/time year with century (1970)
/// * %H - message date/time hour (00 .. 23)
/// * %h - message date/time hour (00 .. 12)
/// * %a - message date/time am/pm
/// * %A - message date/time AM/PM
/// * %M - message date/time minute (00 .. 59)
/// * %S - message date/time second (00 .. 59)
/// * %i - message date/time millisecond (000 .. 999)
/// * %c - message date/time centisecond (0 .. 9)
/// * %F - message date/time fractional seconds/microseconds (000000 - 999999)
/// * %z - time zone differential in ISO 8601 format (Z or +NN.NN)
/// * %Z - time zone differential in RFC format (GMT or +NNNN)
/// * %L - convert time to local time (must be specified before any date/time specifier; does not itself output anything)
/// * %E - epoch time (UTC, seconds since midnight, January 1, 1970)
/// * %v[width] - the message source (%s) but text length is padded/cropped to 'width'
/// * %[name] - the value of the message parameter with the given name
/// * %% - percent sign
{
public:
PatternFormatter();
/// Creates a PatternFormatter.
/// The format pattern must be specified with
/// a call to setProperty.
PatternFormatter(const std::string& format);
/// Creates a PatternFormatter that uses the
/// given format pattern.
~PatternFormatter();
/// Destroys the PatternFormatter.
void format(const Message& msg, std::string& text);
/// Formats the message according to the specified
/// format pattern and places the result in text.
void setProperty(const std::string& name, const std::string& value);
/// Sets the property with the given name to the given value.
///
/// The following properties are supported:
///
/// * pattern: The format pattern. See the PatternFormatter class
/// for details.
/// * times: Specifies whether times are adjusted for local time
/// or taken as they are in UTC. Supported values are "local" and "UTC".
///
/// If any other property name is given, a PropertyNotSupported
/// exception is thrown.
std::string getProperty(const std::string& name) const;
/// Returns the value of the property with the given name or
/// throws a PropertyNotSupported exception if the given
/// name is not recognized.
static const std::string PROP_PATTERN;
static const std::string PROP_TIMES;
protected:
static const std::string& getPriorityName(int);
/// Returns a string for the given priority value.
private:
struct PatternAction
{
PatternAction(): key(0), length(0)
{
}
char key;
int length;
std::string property;
std::string prepend;
};
void parsePattern();
/// Will parse the _pattern string into the vector of PatternActions,
/// which contains the message key, any text that needs to be written first
/// a proprety in case of %[] and required length.
std::vector<PatternAction> _patternActions;
bool _localTime;
std::string _pattern;
};
} // namespace Poco
#endif // Foundation_PatternFormatter_INCLUDED
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