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#include "MemoryOutStream.h"
#ifdef UNITTEST_MEMORYOUTSTREAM_IS_STD_OSTRINGSTREAM
namespace UnitTest {
char const* MemoryOutStream::GetText() const
{
m_text = this->str();
return m_text.c_str();
}
void MemoryOutStream::Clear()
{
this->str(std::string());
m_text = this->str();
}
#ifdef UNITTEST_COMPILER_IS_MSVC6
#define snprintf _snprintf
template<typename ValueType>
std::ostream& FormatToStream(std::ostream& stream, char const* format, ValueType const& value)
{
using namespace std;
const size_t BUFFER_SIZE=32;
char txt[BUFFER_SIZE];
snprintf(txt, BUFFER_SIZE, format, value);
return stream << txt;
}
std::ostream& operator<<(std::ostream& stream, __int64 const n)
{
return FormatToStream(stream, "%I64d", n);
}
std::ostream& operator<<(std::ostream& stream, unsigned __int64 const n)
{
return FormatToStream(stream, "%I64u", n);
}
#endif
}
#else
#include <cstring>
#include <cstdio>
#if _MSC_VER
#define snprintf _snprintf
#endif
namespace UnitTest {
namespace {
template<typename ValueType>
void FormatToStream(MemoryOutStream& stream, char const* format, ValueType const& value)
{
using namespace std;
const size_t BUFFER_SIZE=32;
char txt[BUFFER_SIZE];
snprintf(txt, BUFFER_SIZE, format, value);
stream << txt;
}
int RoundUpToMultipleOfPow2Number (int n, int pow2Number)
{
return (n + (pow2Number - 1)) & ~(pow2Number - 1);
}
}
MemoryOutStream::MemoryOutStream(int const size)
: m_capacity (0)
, m_buffer (0)
{
GrowBuffer(size);
}
MemoryOutStream::~MemoryOutStream()
{
delete [] m_buffer;
}
void MemoryOutStream::Clear()
{
m_buffer[0] = '\0';
}
char const* MemoryOutStream::GetText() const
{
return m_buffer;
}
MemoryOutStream& MemoryOutStream::operator <<(char const* txt)
{
using namespace std;
int const bytesLeft = m_capacity - (int)strlen(m_buffer);
int const bytesRequired = (int)strlen(txt) + 1;
if (bytesRequired > bytesLeft)
{
int const requiredCapacity = bytesRequired + m_capacity - bytesLeft;
GrowBuffer(requiredCapacity);
}
strcat(m_buffer, txt);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(int const n)
{
FormatToStream(*this, "%i", n);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(long const n)
{
FormatToStream(*this, "%li", n);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(unsigned long const n)
{
FormatToStream(*this, "%lu", n);
return *this;
}
#ifdef UNITTEST_COMPILER_IS_MSVC6
MemoryOutStream& MemoryOutStream::operator <<(__int64 const n)
#else
MemoryOutStream& MemoryOutStream::operator <<(long long const n)
#endif
{
#ifdef UNITTEST_WIN32
FormatToStream(*this, "%I64d", n);
#else
FormatToStream(*this, "%lld", n);
#endif
return *this;
}
#ifdef UNITTEST_COMPILER_IS_MSVC6
MemoryOutStream& MemoryOutStream::operator <<(unsigned __int64 const n)
#else
MemoryOutStream& MemoryOutStream::operator <<(unsigned long long const n)
#endif
{
#ifdef UNITTEST_WIN32
FormatToStream(*this, "%I64u", n);
#else
FormatToStream(*this, "%llu", n);
#endif
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(float const f)
{
FormatToStream(*this, "%0.6f", f);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(void const* p)
{
FormatToStream(*this, "%p", p);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(unsigned int const s)
{
FormatToStream(*this, "%u", s);
return *this;
}
MemoryOutStream& MemoryOutStream::operator <<(double const d)
{
FormatToStream(*this, "%0.6f", d);
return *this;
}
int MemoryOutStream::GetCapacity() const
{
return m_capacity;
}
void MemoryOutStream::GrowBuffer(int const desiredCapacity)
{
int const newCapacity = RoundUpToMultipleOfPow2Number(desiredCapacity, GROW_CHUNK_SIZE);
using namespace std;
char* buffer = new char[newCapacity];
if (m_buffer)
strcpy(buffer, m_buffer);
else
strcpy(buffer, "");
delete [] m_buffer;
m_buffer = buffer;
m_capacity = newCapacity;
}
}
#endif
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