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/* Copyright (C) 2025, 2026 Free Software Foundation, Inc.
This file is part of GDB.
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef GDB_LOGGING_FILE_H
#define GDB_LOGGING_FILE_H
#include "ui-file.h"
/* A ui_file implementation that optionally writes its output to a
second logging stream. Whether logging is actually done depends on
the user's logging settings. The precise underlying ui_file type
is a template parameter, so that either owning or non-owning
instances can be made. */
template<typename T>
class logging_file : public ui_file
{
public:
/* This wraps another stream. Whether or not output actually goes
to that stream depends on the redirection settings. FOR_STDLOG
should only be set for a stream intended by use as gdb_stdlog;
this is used to implement the "debug redirect" feature. */
logging_file (T out, bool for_stdlog = false)
: m_out (std::move (out)),
m_for_stdlog (for_stdlog)
{
}
void write (const char *buf, long length_buf) override;
void write_async_safe (const char *buf, long length_buf) override;
void puts (const char *) override;
void flush () override;
bool can_page () const override;
void emit_style_escape (const ui_file_style &style) override;
void puts_unfiltered (const char *str) override;
bool isatty () override
{
/* Defer to the wrapped file. */
return m_out->isatty ();
}
bool term_out () override
{
/* Defer to the wrapped file. */
return m_out->term_out ();
}
bool can_emit_style_escape () override
{
/* Defer to the wrapped file. */
return m_out->can_emit_style_escape ();
}
private:
/* A helper function that returns true if output should go to
M_OUT. */
bool ordinary_output () const;
/* The underlying file. */
T m_out;
/* True if this stream is used for gdb_stdlog. This is used to
implement the debug redirect feature. */
bool m_for_stdlog;
};
#endif /* GDB_LOGGING_FILE_H */
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