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Split out IStream out of catch_stream.hpp

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This commit is contained in:
Martin Hořeňovský
2022-04-16 16:33:57 +02:00
parent 05e85c5652
commit 98bb638fb2
14 changed files with 228 additions and 178 deletions
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src/catch2/internal/catch_stream.cpp
-142
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@@ -5,158 +5,16 @@
// https://www.boost.org/LICENSE_1_0.txt)
// SPDX-License-Identifier: BSL-1.0
#include <catch2/internal/catch_enforce.hpp>
#include <catch2/internal/catch_stream.hpp>
#include <catch2/internal/catch_debug_console.hpp>
#include <catch2/internal/catch_stringref.hpp>
#include <catch2/internal/catch_singletons.hpp>
#include <catch2/internal/catch_unique_ptr.hpp>
#include <catch2/internal/catch_stdstreams.hpp>
#include <cstdio>
#include <fstream>
#include <sstream>
#include <vector>
namespace Catch {
Catch::IStream::~IStream() = default;
namespace Detail {
namespace {
template<typename WriterF, std::size_t bufferSize=256>
class StreamBufImpl : public std::streambuf {
char data[bufferSize];
WriterF m_writer;
public:
StreamBufImpl() {
setp( data, data + sizeof(data) );
}
~StreamBufImpl() noexcept {
StreamBufImpl::sync();
}
private:
int overflow( int c ) override {
sync();
if( c != EOF ) {
if( pbase() == epptr() )
m_writer( std::string( 1, static_cast<char>( c ) ) );
else
sputc( static_cast<char>( c ) );
}
return 0;
}
int sync() override {
if( pbase() != pptr() ) {
m_writer( std::string( pbase(), static_cast<std::string::size_type>( pptr() - pbase() ) ) );
setp( pbase(), epptr() );
}
return 0;
}
};
///////////////////////////////////////////////////////////////////////////
struct OutputDebugWriter {
void operator()( std::string const& str ) {
if ( !str.empty() ) {
writeToDebugConsole( str );
}
}
};
///////////////////////////////////////////////////////////////////////////
class FileStream : public IStream {
std::ofstream m_ofs;
public:
FileStream( std::string const& filename ) {
m_ofs.open( filename.c_str() );
CATCH_ENFORCE( !m_ofs.fail(), "Unable to open file: '" << filename << '\'' );
}
~FileStream() override = default;
public: // IStream
std::ostream& stream() override {
return m_ofs;
}
};
///////////////////////////////////////////////////////////////////////////
class CoutStream : public IStream {
std::ostream m_os;
public:
// Store the streambuf from cout up-front because
// cout may get redirected when running tests
CoutStream() : m_os( Catch::cout().rdbuf() ) {}
~CoutStream() override = default;
public: // IStream
std::ostream& stream() override { return m_os; }
bool isConsole() const override { return true; }
};
class CerrStream : public IStream {
std::ostream m_os;
public:
// Store the streambuf from cerr up-front because
// cout may get redirected when running tests
CerrStream(): m_os( Catch::cerr().rdbuf() ) {}
~CerrStream() override = default;
public: // IStream
std::ostream& stream() override { return m_os; }
bool isConsole() const override { return true; }
};
///////////////////////////////////////////////////////////////////////////
class DebugOutStream : public IStream {
Detail::unique_ptr<StreamBufImpl<OutputDebugWriter>> m_streamBuf;
std::ostream m_os;
public:
DebugOutStream()
: m_streamBuf( Detail::make_unique<StreamBufImpl<OutputDebugWriter>>() ),
m_os( m_streamBuf.get() )
{}
~DebugOutStream() override = default;
public: // IStream
std::ostream& stream() override { return m_os; }
};
} // unnamed namespace
} // namespace Detail
///////////////////////////////////////////////////////////////////////////
auto makeStream( std::string const& filename ) -> Detail::unique_ptr<IStream> {
if ( filename.empty() || filename == "-" ) {
return Detail::make_unique<Detail::CoutStream>();
}
if( filename[0] == '%' ) {
if ( filename == "%debug" ) {
return Detail::make_unique<Detail::DebugOutStream>();
} else if ( filename == "%stderr" ) {
return Detail::make_unique<Detail::CerrStream>();
} else if ( filename == "%stdout" ) {
return Detail::make_unique<Detail::CoutStream>();
} else {
CATCH_ERROR( "Unrecognised stream: '" << filename << '\'' );
}
}
return Detail::make_unique<Detail::FileStream>( filename );
}
// This class encapsulates the idea of a pool of ostringstreams that can be reused.
struct StringStreams {
std::vector<Detail::unique_ptr<std::ostringstream>> m_streams;