iutest_stream.hpp

[詳解]

//======================================================================
//-----------------------------------------------------------------------
//-----------------------------------------------------------------------
//======================================================================
#ifndef INCG_IRIS_IUTEST_STREAM_HPP_3A4AF139_9F24_4730_81D0_DADFCE6DCF99_
#define INCG_IRIS_IUTEST_STREAM_HPP_3A4AF139_9F24_4730_81D0_DADFCE6DCF99_
 
//======================================================================
// include
// IWYU pragma: begin_exports
#include "iutest_string.hpp"
// IWYU pragma: end_exports
 
namespace iutest {
namespace detail
{
 
//======================================================================
// class
class IOutStream
{
public:
    virtual ~IOutStream() {}
public:
    virtual bool Write(const void* buf, size_t size, size_t cnt) = 0;
public:
    virtual int Printf(const char* fmt, ...) IUTEST_ATTRIBUTE_FORMAT_PRINTF(2, 3)
    {
        va_list va;
        va_start(va, fmt);
        const ::std::string str = StringFormat(fmt, va);
        va_end(va);
        const size_t len = str.length();
        Write(str.c_str(), len, 1);
        return static_cast<int>(len);
    }
};
 
class IInStream
{
public:
    virtual ~IInStream() {}
public:
    virtual bool Read(void* buf, size_t size, size_t cnt) = 0;
 
    virtual iu_uint_max_t GetSize() = 0;
 
public:
    virtual ::std::string ReadAll()
    {
        ::std::string str;
        const size_t size = static_cast<size_t>(GetSize());
        if( size != 0 )
        {
            char* buf = new char[size+1];
            buf[size] = '\0';
            if( Read(buf, size, 1) )
            {
                str = buf;
            }
            delete [] buf;
        }
        return str;
    }
};
 
class FileOutStream : public IOutStream
{
protected:
    FILE* m_fp;
public:
    explicit FileOutStream(FILE* fp) IUTEST_CXX_NOEXCEPT_SPEC
        : m_fp(fp)
    {}
public:
    virtual bool Write(const void* buf, size_t size, size_t cnt) IUTEST_CXX_OVERRIDE
    {
        if( fwrite(buf, size, cnt, m_fp) < cnt )
        {
            return false;
        }
        return true;
    }
};
 
}   // end of namespace detail
}   // end of namespace iutest
 
#endif // INCG_IRIS_IUTEST_STREAM_HPP_3A4AF139_9F24_4730_81D0_DADFCE6DCF99_