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catch_console_colour.cpp
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catch_console_colour.cpp
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// Copyright Catch2 Authors
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file LICENSE_1_0.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#if defined(__clang__)
# pragma clang diagnostic push
# pragma clang diagnostic ignored "-Wexit-time-destructors"
#endif
#include <catch2/internal/catch_console_colour.hpp>
#include <catch2/internal/catch_enforce.hpp>
#include <catch2/internal/catch_errno_guard.hpp>
#include <catch2/interfaces/catch_interfaces_config.hpp>
#include <catch2/internal/catch_stream.hpp>
#include <catch2/internal/catch_context.hpp>
#include <catch2/internal/catch_platform.hpp>
#include <catch2/internal/catch_debugger.hpp>
#include <catch2/internal/catch_windows_h_proxy.hpp>
#include <ostream>
namespace Catch {
namespace {
struct IColourImpl {
virtual ~IColourImpl() = default;
virtual void use( Colour::Code _colourCode ) = 0;
};
struct NoColourImpl : IColourImpl {
void use( Colour::Code ) override {}
static IColourImpl* instance() {
static NoColourImpl s_instance;
return &s_instance;
}
};
} // anon namespace
} // namespace Catch
#if !defined( CATCH_CONFIG_COLOUR_NONE ) && !defined( CATCH_CONFIG_COLOUR_WINDOWS ) && !defined( CATCH_CONFIG_COLOUR_ANSI )
# ifdef CATCH_PLATFORM_WINDOWS
# define CATCH_CONFIG_COLOUR_WINDOWS
# else
# define CATCH_CONFIG_COLOUR_ANSI
# endif
#endif
#if defined ( CATCH_CONFIG_COLOUR_WINDOWS ) /////////////////////////////////////////
namespace Catch {
namespace {
class Win32ColourImpl : public IColourImpl {
public:
Win32ColourImpl() {
CONSOLE_SCREEN_BUFFER_INFO csbiInfo;
GetConsoleScreenBufferInfo( GetStdHandle( STD_OUTPUT_HANDLE ),
&csbiInfo );
originalForegroundAttributes = csbiInfo.wAttributes & ~( BACKGROUND_GREEN | BACKGROUND_RED | BACKGROUND_BLUE | BACKGROUND_INTENSITY );
originalBackgroundAttributes = csbiInfo.wAttributes & ~( FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE | FOREGROUND_INTENSITY );
}
void use( Colour::Code _colourCode ) override {
switch( _colourCode ) {
case Colour::None: return setTextAttribute( originalForegroundAttributes );
case Colour::White: return setTextAttribute( FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE );
case Colour::Red: return setTextAttribute( FOREGROUND_RED );
case Colour::Green: return setTextAttribute( FOREGROUND_GREEN );
case Colour::Blue: return setTextAttribute( FOREGROUND_BLUE );
case Colour::Cyan: return setTextAttribute( FOREGROUND_BLUE | FOREGROUND_GREEN );
case Colour::Yellow: return setTextAttribute( FOREGROUND_RED | FOREGROUND_GREEN );
case Colour::Grey: return setTextAttribute( 0 );
case Colour::LightGrey: return setTextAttribute( FOREGROUND_INTENSITY );
case Colour::BrightRed: return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_RED );
case Colour::BrightGreen: return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_GREEN );
case Colour::BrightWhite: return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_GREEN | FOREGROUND_RED | FOREGROUND_BLUE );
case Colour::BrightYellow: return setTextAttribute( FOREGROUND_INTENSITY | FOREGROUND_RED | FOREGROUND_GREEN );
case Colour::Bright: CATCH_INTERNAL_ERROR( "not a colour" );
default:
CATCH_ERROR( "Unknown colour requested" );
}
}
private:
void setTextAttribute( WORD _textAttribute ) {
SetConsoleTextAttribute( GetStdHandle( STD_OUTPUT_HANDLE ),
_textAttribute |
originalBackgroundAttributes );
}
WORD originalForegroundAttributes;
WORD originalBackgroundAttributes;
};
IColourImpl* platformColourInstance() {
static Win32ColourImpl s_instance;
auto const* config = getCurrentContext().getConfig();
UseColour colourMode = config?
config->useColour() : UseColour::Auto;
if( colourMode == UseColour::Auto )
colourMode = UseColour::Yes;
return colourMode == UseColour::Yes
? &s_instance
: NoColourImpl::instance();
}
} // end anon namespace
} // end namespace Catch
#elif defined( CATCH_CONFIG_COLOUR_ANSI ) //////////////////////////////////////
#include <unistd.h>
namespace Catch {
namespace {
// use POSIX/ ANSI console terminal codes
// Thanks to Adam Strzelecki for original contribution
// (http://github.com/nanoant)
// https://github.com/philsquared/Catch/pull/131
class PosixColourImpl : public IColourImpl {
public:
void use( Colour::Code _colourCode ) override {
switch( _colourCode ) {
case Colour::None:
case Colour::White: return setColour( "[0m" );
case Colour::Red: return setColour( "[0;31m" );
case Colour::Green: return setColour( "[0;32m" );
case Colour::Blue: return setColour( "[0;34m" );
case Colour::Cyan: return setColour( "[0;36m" );
case Colour::Yellow: return setColour( "[0;33m" );
case Colour::Grey: return setColour( "[1;30m" );
case Colour::LightGrey: return setColour( "[0;37m" );
case Colour::BrightRed: return setColour( "[1;31m" );
case Colour::BrightGreen: return setColour( "[1;32m" );
case Colour::BrightWhite: return setColour( "[1;37m" );
case Colour::BrightYellow: return setColour( "[1;33m" );
case Colour::Bright: CATCH_INTERNAL_ERROR( "not a colour" );
default: CATCH_INTERNAL_ERROR( "Unknown colour requested" );
}
}
static IColourImpl* instance() {
static PosixColourImpl s_instance;
return &s_instance;
}
private:
void setColour( const char* _escapeCode ) {
// The escape sequence must be flushed to console, otherwise if
// stdin and stderr are intermixed, we'd get accidentally coloured output.
getCurrentContext().getConfig()->defaultStream()
<< '\033' << _escapeCode << std::flush;
}
};
bool useColourOnPlatform() {
return
#if defined(CATCH_PLATFORM_MAC) || defined(CATCH_PLATFORM_IPHONE)
!isDebuggerActive() &&
#endif
#if !(defined(__DJGPP__) && defined(__STRICT_ANSI__))
isatty(STDOUT_FILENO)
#else
false
#endif
;
}
IColourImpl* platformColourInstance() {
ErrnoGuard guard;
auto const* config = getCurrentContext().getConfig();
UseColour colourMode = config
? config->useColour()
: UseColour::Auto;
if( colourMode == UseColour::Auto )
colourMode = useColourOnPlatform()
? UseColour::Yes
: UseColour::No;
return colourMode == UseColour::Yes
? PosixColourImpl::instance()
: NoColourImpl::instance();
}
} // end anon namespace
} // end namespace Catch
#else // not Windows or ANSI ///////////////////////////////////////////////
namespace Catch {
static IColourImpl* platformColourInstance() { return NoColourImpl::instance(); }
} // end namespace Catch
#endif // Windows/ ANSI/ None
namespace Catch {
Colour::Colour( Code _colourCode ) { use( _colourCode ); }
Colour::Colour( Colour&& other ) noexcept {
m_moved = other.m_moved;
other.m_moved = true;
}
Colour& Colour::operator=( Colour&& other ) noexcept {
m_moved = other.m_moved;
other.m_moved = true;
return *this;
}
Colour::~Colour(){ if( !m_moved ) use( None ); }
void Colour::use( Code _colourCode ) {
static IColourImpl* impl = platformColourInstance();
// Strictly speaking, this cannot possibly happen.
// However, under some conditions it does happen (see #1626),
// and this change is small enough that we can let practicality
// triumph over purity in this case.
if (impl != nullptr) {
impl->use( _colourCode );
}
}
std::ostream& operator << ( std::ostream& os, Colour const& ) {
return os;
}
} // end namespace Catch
#if defined(__clang__)
# pragma clang diagnostic pop
#endif