+wxDataStreamBase::~wxDataStreamBase()
+{
+#if wxUSE_UNICODE
+ delete m_conv;
+#endif // wxUSE_UNICODE
+}
+
+// ---------------------------------------------------------------------------
+// wxDataInputStream
+// ---------------------------------------------------------------------------
+
+wxDataInputStream::wxDataInputStream(wxInputStream& s, const wxMBConv& conv)
+ : wxDataStreamBase(conv),
+ m_input(&s)
+{
+}
+
+#if wxHAS_INT64
+wxUint64 wxDataInputStream::Read64()
+{
+ wxUint64 tmp;
+ Read64(&tmp, 1);
+ return tmp;
+}
+#endif // wxHAS_INT64
+
+wxUint32 wxDataInputStream::Read32()
+{
+ wxUint32 i32;
+
+ m_input->Read(&i32, 4);
+
+ if (m_be_order)
+ return wxUINT32_SWAP_ON_LE(i32);
+ else
+ return wxUINT32_SWAP_ON_BE(i32);
+}
+
+wxUint16 wxDataInputStream::Read16()
+{
+ wxUint16 i16;
+
+ m_input->Read(&i16, 2);
+
+ if (m_be_order)
+ return wxUINT16_SWAP_ON_LE(i16);
+ else
+ return wxUINT16_SWAP_ON_BE(i16);
+}
+
+wxUint8 wxDataInputStream::Read8()
+{
+ wxUint8 buf;
+
+ m_input->Read(&buf, 1);
+ return (wxUint8)buf;
+}
+
+double wxDataInputStream::ReadDouble()
+{
+#if wxUSE_APPLE_IEEE
+ if ( m_useExtendedPrecision )
+ {
+ char buf[10];
+
+ m_input->Read(buf, 10);
+ return wxConvertFromIeeeExtended((const wxInt8 *)buf);
+ }
+ else
+#endif // wxUSE_APPLE_IEEE
+ {
+ Float64Data floatData;
+
+ if ( m_be_order == (wxBYTE_ORDER == wxBIG_ENDIAN) )
+ {
+ floatData.i[0] = Read32();
+ floatData.i[1] = Read32();
+ }
+ else
+ {
+ floatData.i[1] = Read32();
+ floatData.i[0] = Read32();
+ }
+
+ return static_cast<double>(floatData.f);
+ }
+}
+
+float wxDataInputStream::ReadFloat()
+{
+#if wxUSE_APPLE_IEEE
+ if ( m_useExtendedPrecision )
+ {
+ return (float)ReadDouble();
+ }
+ else
+#endif // wxUSE_APPLE_IEEE
+ {
+ Float32Data floatData;
+
+ floatData.i = Read32();
+ return static_cast<float>(floatData.f);
+ }
+}
+
+wxString wxDataInputStream::ReadString()
+{
+ wxString ret;
+
+ const size_t len = Read32();
+ if ( len > 0 )
+ {
+#if wxUSE_UNICODE
+ wxCharBuffer tmp(len);
+ if ( tmp )
+ {
+ m_input->Read(tmp.data(), len);
+ ret = m_conv->cMB2WX(tmp.data());
+ }
+#else
+ wxStringBuffer buf(ret, len);
+ if ( buf )
+ m_input->Read(buf, len);
+#endif
+ }
+
+ return ret;
+}
+
+#if wxUSE_LONGLONG
+
+template <class T>
+static
+void DoReadLL(T *buffer, size_t size, wxInputStream *input, bool be_order)
+{
+ typedef T DataType;
+ unsigned char *pchBuffer = new unsigned char[size * 8];
+ // TODO: Check for overflow when size is of type uint and is > than 512m
+ input->Read(pchBuffer, size * 8);
+ size_t idx_base = 0;
+ if ( be_order )
+ {
+ for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
+ {
+ buffer[uiIndex] = 0l;
+ for ( unsigned ui = 0; ui != 8; ++ui )
+ {
+ buffer[uiIndex] = buffer[uiIndex] * 256l +
+ DataType((unsigned long) pchBuffer[idx_base + ui]);
+ }
+
+ idx_base += 8;
+ }
+ }
+ else // little endian
+ {
+ for ( size_t uiIndex=0; uiIndex!=size; ++uiIndex )
+ {
+ buffer[uiIndex] = 0l;
+ for ( unsigned ui=0; ui!=8; ++ui )
+ buffer[uiIndex] = buffer[uiIndex] * 256l +
+ DataType((unsigned long) pchBuffer[idx_base + 7 - ui]);
+ idx_base += 8;
+ }
+ }
+ delete[] pchBuffer;
+}
+
+template <class T>
+static void DoWriteLL(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
+{
+ typedef T DataType;
+ unsigned char *pchBuffer = new unsigned char[size * 8];
+ size_t idx_base = 0;
+ if ( be_order )
+ {
+ for ( size_t uiIndex = 0; uiIndex != size; ++uiIndex )
+ {
+ DataType i64 = buffer[uiIndex];
+ for ( unsigned ui = 0; ui != 8; ++ui )
+ {
+ pchBuffer[idx_base + 7 - ui] =
+ (unsigned char) (i64.GetLo() & 255l);
+ i64 >>= 8l;
+ }
+
+ idx_base += 8;
+ }
+ }
+ else // little endian
+ {
+ for ( size_t uiIndex=0; uiIndex != size; ++uiIndex )
+ {
+ DataType i64 = buffer[uiIndex];
+ for (unsigned ui=0; ui!=8; ++ui)
+ {
+ pchBuffer[idx_base + ui] =
+ (unsigned char) (i64.GetLo() & 255l);
+ i64 >>= 8l;
+ }
+
+ idx_base += 8;
+ }
+ }
+
+ // TODO: Check for overflow when size is of type uint and is > than 512m
+ output->Write(pchBuffer, size * 8);
+ delete[] pchBuffer;
+}
+
+#endif // wxUSE_LONGLONG
+
+#ifdef wxLongLong_t
+
+template <class T>
+static
+void DoReadI64(T *buffer, size_t size, wxInputStream *input, bool be_order)
+{
+ typedef T DataType;
+ unsigned char *pchBuffer = (unsigned char*) buffer;
+ // TODO: Check for overflow when size is of type uint and is > than 512m
+ input->Read(pchBuffer, size * 8);
+ if ( be_order )
+ {
+ for ( wxUint32 i = 0; i < size; i++ )
+ {
+ DataType v = wxUINT64_SWAP_ON_LE(*buffer);
+ *(buffer++) = v;
+ }
+ }
+ else // little endian
+ {
+ for ( wxUint32 i=0; i<size; i++ )
+ {
+ DataType v = wxUINT64_SWAP_ON_BE(*buffer);
+ *(buffer++) = v;
+ }
+ }
+}
+
+template <class T>
+static
+void DoWriteI64(const T *buffer, size_t size, wxOutputStream *output, bool be_order)
+{
+ typedef T DataType;
+ if ( be_order )
+ {
+ for ( size_t i = 0; i < size; i++ )
+ {
+ DataType i64 = wxUINT64_SWAP_ON_LE(*buffer);
+ buffer++;
+ output->Write(&i64, 8);
+ }
+ }
+ else // little endian
+ {
+ for ( size_t i=0; i < size; i++ )
+ {
+ DataType i64 = wxUINT64_SWAP_ON_BE(*buffer);
+ buffer++;
+ output->Write(&i64, 8);
+ }
+ }
+}
+
+#endif // wxLongLong_t
+
+
+#if wxHAS_INT64
+void wxDataInputStream::Read64(wxUint64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+ DoReadLL(buffer, size, m_input, m_be_order);
+#else
+ DoReadI64(buffer, size, m_input, m_be_order);
+#endif
+}
+
+void wxDataInputStream::Read64(wxInt64 *buffer, size_t size)
+{
+#ifndef wxLongLong_t
+ DoReadLL(buffer, size, m_input, m_be_order);
+#else
+ DoReadI64(buffer, size, m_input, m_be_order);
+#endif
+}
+#endif // wxHAS_INT64
+
+#if defined(wxLongLong_t) && wxUSE_LONGLONG
+void wxDataInputStream::Read64(wxULongLong *buffer, size_t size)
+{
+ DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+void wxDataInputStream::Read64(wxLongLong *buffer, size_t size)
+{
+ DoReadLL(buffer, size, m_input, m_be_order);
+}
+#endif // wxLongLong_t
+
+#if wxUSE_LONGLONG
+void wxDataInputStream::ReadLL(wxULongLong *buffer, size_t size)
+{
+ DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+void wxDataInputStream::ReadLL(wxLongLong *buffer, size_t size)
+{
+ DoReadLL(buffer, size, m_input, m_be_order);
+}
+
+wxLongLong wxDataInputStream::ReadLL(void)
+{
+ wxLongLong ll;
+ DoReadLL(&ll, (size_t)1, m_input, m_be_order);
+ return ll;
+}
+#endif // wxUSE_LONGLONG
+
+void wxDataInputStream::Read32(wxUint32 *buffer, size_t size)
+{
+ m_input->Read(buffer, size * 4);
+
+ if (m_be_order)
+ {
+ for (wxUint32 i=0; i<size; i++)
+ {
+ wxUint32 v = wxUINT32_SWAP_ON_LE(*buffer);
+ *(buffer++) = v;
+ }
+ }
+ else
+ {
+ for (wxUint32 i=0; i<size; i++)
+ {
+ wxUint32 v = wxUINT32_SWAP_ON_BE(*buffer);
+ *(buffer++) = v;
+ }
+ }
+}
projects / wxWidgets.git / blobdiff