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xahaud/include/xrpl/beast/utility/WrappedSink.h
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//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_UTILITY_WRAPPEDSINK_H_INCLUDED
#define BEAST_UTILITY_WRAPPEDSINK_H_INCLUDED
#include <xrpl/beast/utility/Journal.h>
namespace beast {
/** Wraps a Journal::Sink to prefix its output with a string. */
// A WrappedSink both is a Sink and has a Sink:
// o It inherits from Sink so it has the correct interface.
// o It has a sink (reference) so it preserves the passed write() behavior.
// The data inherited from the base class is ignored.
class WrappedSink : public beast::Journal::Sink
{
private:
beast::Journal::Sink& sink_;
std::string prefix_;
public:
explicit WrappedSink(
beast::Journal::Sink& sink,
std::string const& prefix = "")
: Sink(sink), sink_(sink), prefix_(prefix)
{
}
explicit WrappedSink(
beast::Journal const& journal,
std::string const& prefix = "")
: WrappedSink(journal.sink(), prefix)
{
}
void
prefix(std::string const& s)
{
prefix_ = s;
}
bool
active(beast::severities::Severity level) const override
{
return sink_.active(level);
}
bool
console() const override
{
return sink_.console();
}
void
console(bool output) override
{
sink_.console(output);
}
beast::severities::Severity
threshold() const override
{
return sink_.threshold();
}
void
threshold(beast::severities::Severity thresh) override
{
sink_.threshold(thresh);
}
void
write(beast::severities::Severity level, std::string const& text) override
{
using beast::Journal;
sink_.write(level, prefix_ + text);
}
};
} // namespace beast
#endif