问如何将Boost.Test输出记录到HRF中的stdout和XML中的文件？

EN

#pragma once

// Copyright (c) 2014
// This file is distributed under the 
// Boost Software License - Version 1.0 - August 17th, 2003
// (See http://www.boost.org/LICENSE_1_0.txt )

#include <boost/test/unit_test_log_formatter.hpp>
#include <boost/test/output/compiler_log_formatter.hpp>
#include <boost/test/output/xml_log_formatter.hpp>
#include <fstream>

namespace boost { 
namespace unit_test { 
namespace output {

//! Log formatter for Boost.Test that outputs the logging output *both*
//! to the standard HRF formatter (normal output stream ~ cout) *and*
//! also to the XML formatter, but the XML is written to a report file.
//!
//! Usage: 
//! // Call in init_unit_test_suite: (this will override the --log_format parameter)
//! boost::unit_test::unit_test_log.set_formatter(
//!   new boost::unit_test::output::dual_log_formatter(L"filename.xml")
//! );
//!
//! Note: Calling `boost::unit_test::unit_test_log.set_stream(...)` will change the stream for
//!       the HRF formatter used here.
//!
//! Note: Implemented in boost::unit_test::output for symmetry with existing formatter classes
//!
class dual_log_formatter : public unit_test_log_formatter {
public:
    // Formatter interface
    void log_start(std::ostream& os, counter_t test_cases_amount) override {
        hrf_logger.log_start(os, test_cases_amount);
        xml_logger.log_start(xml_file, test_cases_amount);
    }
    void log_finish(std::ostream& os) override {
        hrf_logger.log_finish(os);
        xml_logger.log_finish(xml_file);
    }
    void log_build_info(std::ostream& os) override {
        hrf_logger.log_build_info(os);
        xml_logger.log_build_info(xml_file);
    }

    void test_unit_start(std::ostream& os, test_unit const& tu) override {
        hrf_logger.test_unit_start(os, tu);
        xml_logger.test_unit_start(xml_file, tu);
    }

    void test_unit_finish(std::ostream& os, test_unit const& tu, unsigned long elapsed) override {
        hrf_logger.test_unit_finish(os, tu, elapsed);
        xml_logger.test_unit_finish(xml_file, tu, elapsed);
    }

    void test_unit_skipped(std::ostream& os, test_unit const& tu) override {
        hrf_logger.test_unit_skipped(os, tu);
        xml_logger.test_unit_skipped(xml_file, tu);
    }

    void log_exception(std::ostream& os, log_checkpoint_data const& checkpoint_data, execution_exception const& ex) override {
        hrf_logger.log_exception(os, checkpoint_data, ex);
        xml_logger.log_exception(xml_file, checkpoint_data, ex);
    }

    void log_entry_start(std::ostream& os, log_entry_data const& entry_data, log_entry_types let) override {
        hrf_logger.log_entry_start(os, entry_data, let);
        xml_logger.log_entry_start(xml_file, entry_data, let);
    }
    using unit_test_log_formatter::log_entry_value; // bring base class functions into overload set
    void log_entry_value(std::ostream& os, const_string value) override {
        hrf_logger.log_entry_value(os, value);
        xml_logger.log_entry_value(xml_file, value);
    }
    void log_entry_finish(std::ostream& os) override {
        hrf_logger.log_entry_finish(os);
        xml_logger.log_entry_finish(xml_file);
    }

    dual_log_formatter(const wchar_t* xmlFilename) { // Note: Use char* on non-MSVC compilers
        xml_file.open(xmlFilename);
    }

private:
    std::ofstream xml_file;
    compiler_log_formatter hrf_logger;
    xml_log_formatter xml_logger;
};

}
}
}