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/*
* Copyright (c) 2018-2020, Andreas Kling <kling@serenityos.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#pragma once
#include <AK/Types.h>
#include <AK/kstdio.h>
#if !defined(KERNEL) && !defined(BOOTSTRAPPER)
# include <AK/ScopedValueRollback.h>
# include <AK/StringView.h>
# include <errno.h>
# include <unistd.h>
#endif
namespace AK {
class String;
class StringView;
class LogStream {
public:
LogStream()
#if !defined(KERNEL) && !defined(BOOTSTRAPPER)
: m_errno_restorer(errno)
#endif
{
}
virtual ~LogStream() {}
virtual void write(const char*, int) const = 0;
private:
#if !defined(KERNEL) && !defined(BOOTSTRAPPER)
ScopedValueRollback<int> m_errno_restorer;
#endif
};
class DebugLogStream final : public LogStream {
public:
DebugLogStream() {}
virtual ~DebugLogStream() override;
virtual void write(const char* characters, int length) const override
{
dbgputstr(characters, length);
}
};
#if !defined(BOOTSTRAPPER) && defined(KERNEL)
class KernelLogStream final : public LogStream {
public:
KernelLogStream() {}
virtual ~KernelLogStream() override;
virtual void write(const char* characters, int length) const override
{
kernelputstr(characters, length);
}
};
#endif
inline const LogStream& operator<<(const LogStream& stream, const char* value)
{
int length = 0;
const char* p = value;
while (*(p++))
++length;
stream.write(value, length);
return stream;
}
const LogStream& operator<<(const LogStream&, const String&);
const LogStream& operator<<(const LogStream&, const StringView&);
const LogStream& operator<<(const LogStream&, int);
const LogStream& operator<<(const LogStream&, unsigned);
const LogStream& operator<<(const LogStream&, long long);
const LogStream& operator<<(const LogStream&, unsigned long);
const LogStream& operator<<(const LogStream&, unsigned long long);
const LogStream& operator<<(const LogStream&, const void*);
inline const LogStream& operator<<(const LogStream& stream, char value)
{
stream.write(&value, 1);
return stream;
}
inline const LogStream& operator<<(const LogStream& stream, bool value)
{
return stream << (value ? "true" : "false");
}
DebugLogStream dbg();
#if defined(KERNEL)
KernelLogStream klog();
#elif !defined(BOOTSTRAPPER)
DebugLogStream klog();
#endif
}
using AK::dbg;
using AK::klog;
using AK::LogStream;
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