X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/53663be8a5ea8e1c6f178839209b67e8228e4642..2f36b4d22beeb7f4f0cedf922c0c26d037f54477:/src/common/datstrm.cpp?ds=sidebyside diff --git a/src/common/datstrm.cpp b/src/common/datstrm.cpp index a2c2aa55da..904e692e51 100644 --- a/src/common/datstrm.cpp +++ b/src/common/datstrm.cpp @@ -1,18 +1,13 @@ ///////////////////////////////////////////////////////////////////////////// -// Name: datstrm.cpp +// Name: src/common/datstrm.cpp // Purpose: Data stream classes // Author: Guilhem Lavaux // Modified by: Mickael Gilabert // Created: 28/06/98 -// RCS-ID: $Id$ // Copyright: (c) Guilhem Lavaux -// Licence: wxWindows licence +// Licence: wxWindows licence ///////////////////////////////////////////////////////////////////////////// -#ifdef __GNUG__ -#pragma implementation "datstrm.h" -#endif - // For compilers that support precompilation, includes "wx.h". #include "wx/wxprec.h" @@ -24,36 +19,83 @@ #include "wx/datstrm.h" -// --------------------------------------------------------------------------- -// wxDataInputStream -// --------------------------------------------------------------------------- +#ifndef WX_PRECOMP + #include "wx/math.h" +#endif //WX_PRECOMP + +namespace +{ +// helper unions used to swap bytes of floats and doubles +union Float32Data +{ + wxFloat32 f; + wxUint32 i; +}; + +union Float64Data +{ + wxFloat64 f; + wxUint32 i[2]; +}; + +} // anonymous namespace + +// ---------------------------------------------------------------------------- +// wxDataStreamBase +// ---------------------------------------------------------------------------- + +wxDataStreamBase::wxDataStreamBase(const wxMBConv& conv) #if wxUSE_UNICODE -wxDataInputStream::wxDataInputStream(wxInputStream& s, wxMBConv& conv) - : m_input(&s), m_be_order(FALSE), m_conv(conv) -#else -wxDataInputStream::wxDataInputStream(wxInputStream& s) - : m_input(&s), m_be_order(FALSE) -#endif + : m_conv(conv.Clone()) +#endif // wxUSE_UNICODE { + // It is unused in non-Unicode build, so suppress a warning there. + wxUnusedVar(conv); + + m_be_order = false; + + // For compatibility with the existing data files, we use extended + // precision if it is available, i.e. if wxUSE_APPLE_IEEE is on. +#if wxUSE_APPLE_IEEE + m_useExtendedPrecision = true; +#endif // wxUSE_APPLE_IEEE } -wxDataInputStream::~wxDataInputStream() +#if wxUSE_UNICODE +void wxDataStreamBase::SetConv( const wxMBConv &conv ) { + delete m_conv; + m_conv = conv.Clone(); } +#endif -wxUint64 wxDataInputStream::Read64() +wxDataStreamBase::~wxDataStreamBase() { - wxUint64 i64; +#if wxUSE_UNICODE + delete m_conv; +#endif // wxUSE_UNICODE +} - m_input->Read(&i64, 8); +// --------------------------------------------------------------------------- +// wxDataInputStream +// --------------------------------------------------------------------------- - if (m_be_order) - return wxUINT64_SWAP_ON_LE(i64); - else - return wxUINT64_SWAP_ON_BE(i64); +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; @@ -86,88 +128,287 @@ wxUint8 wxDataInputStream::Read8() return (wxUint8)buf; } -// Must be at global scope for VC++ 5 -extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes); - double wxDataInputStream::ReadDouble() { #if wxUSE_APPLE_IEEE - char buf[10]; + if ( m_useExtendedPrecision ) + { + char buf[10]; - m_input->Read(buf, 10); - return ConvertFromIeeeExtended((unsigned char *)buf); -#else - return 0.0; -#endif + 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(floatData.f); + } } -wxString wxDataInputStream::ReadString() +float wxDataInputStream::ReadFloat() { - size_t len; +#if wxUSE_APPLE_IEEE + if ( m_useExtendedPrecision ) + { + return (float)ReadDouble(); + } + else +#endif // wxUSE_APPLE_IEEE + { + Float32Data floatData; - len = Read32(); + floatData.i = Read32(); + return static_cast(floatData.f); + } +} - if (len > 0) - { +wxString wxDataInputStream::ReadString() +{ + wxString ret; + + const size_t len = Read32(); + if ( len > 0 ) + { #if wxUSE_UNICODE - char *tmp = new char[len + 1]; - m_input->Read(tmp, len); - tmp[len] = 0; - wxString ret( (const wxChar*) m_conv.cMB2WX(tmp) ); - delete[] tmp; + wxCharBuffer tmp(len); + if ( tmp ) + { + m_input->Read(tmp.data(), len); + ret = m_conv->cMB2WX(tmp.data()); + } #else - wxString ret; - m_input->Read( ret.GetWriteBuf(len), len); - ret.UngetWriteBuf(); + wxStringBuffer buf(ret, len); + if ( buf ) + m_input->Read(buf, len); #endif + } + return ret; - } - else - return wxEmptyString; } -void wxDataInputStream::Read64(wxUint64 *buffer, size_t size) +#if wxUSE_LONGLONG + +template +static +void DoReadLL(T *buffer, size_t size, wxInputStream *input, bool be_order) { - m_input->Read(buffer, size * 8); + 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; +} - if (m_be_order) +template +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 +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 +static +void DoWriteI64(const T *buffer, size_t size, wxOutputStream *output, bool be_order) +{ + typedef T DataType; + if ( be_order ) { - for (wxUint32 i=0; iWrite(&i64, 8); } } - else + else // little endian { - for (wxUint32 i=0; iWrite(&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); + m_input->Read(buffer, size * 4); - if (m_be_order) - { - for (wxUint32 i=0; i>(wxString& s) { s = ReadString(); @@ -247,21 +496,43 @@ wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i) return *this; } +#if wxHAS_INT64 wxDataInputStream& wxDataInputStream::operator>>(wxUint64& i) { i = Read64(); return *this; } -wxDataInputStream& wxDataInputStream::operator>>(double& i) +wxDataInputStream& wxDataInputStream::operator>>(wxInt64& i) { - i = ReadDouble(); + i = Read64(); + return *this; +} +#endif // wxHAS_INT64 + +#if defined(wxLongLong_t) && wxUSE_LONGLONG +wxDataInputStream& wxDataInputStream::operator>>(wxULongLong& i) +{ + i = ReadLL(); + return *this; +} + +wxDataInputStream& wxDataInputStream::operator>>(wxLongLong& i) +{ + i = ReadLL(); + return *this; +} +#endif // wxLongLong_t + +wxDataInputStream& wxDataInputStream::operator>>(double& d) +{ + d = ReadDouble(); return *this; } wxDataInputStream& wxDataInputStream::operator>>(float& f) { - f = (float)ReadDouble(); + f = ReadFloat(); return *this; } @@ -269,30 +540,23 @@ wxDataInputStream& wxDataInputStream::operator>>(float& f) // wxDataOutputStream // --------------------------------------------------------------------------- -#if wxUSE_UNICODE -wxDataOutputStream::wxDataOutputStream(wxOutputStream& s, wxMBConv& conv) - : m_output(&s), m_be_order(FALSE), m_conv(conv) -#else -wxDataOutputStream::wxDataOutputStream(wxOutputStream& s) - : m_output(&s), m_be_order(FALSE) -#endif +wxDataOutputStream::wxDataOutputStream(wxOutputStream& s, const wxMBConv& conv) + : wxDataStreamBase(conv), + m_output(&s) { } -wxDataOutputStream::~wxDataOutputStream() +#if wxHAS_INT64 +void wxDataOutputStream::Write64(wxUint64 i) { + Write64(&i, 1); } -void wxDataOutputStream::Write64(wxUint64 i) +void wxDataOutputStream::Write64(wxInt64 i) { - wxUint64 i64; - - if (m_be_order) - i64 = wxUINT64_SWAP_ON_LE(i); - else - i64 = wxUINT64_SWAP_ON_BE(i); - m_output->Write(&i64, 8); + Write64(&i, 1); } +#endif // wxHAS_INT64 void wxDataOutputStream::Write32(wxUint32 i) { @@ -325,7 +589,7 @@ void wxDataOutputStream::Write8(wxUint8 i) void wxDataOutputStream::WriteString(const wxString& string) { #if wxUSE_UNICODE - const wxWX2MBbuf buf = string.mb_str(m_conv); + const wxWX2MBbuf buf = string.mb_str(*m_conv); #else const wxWX2MBbuf buf = string.mb_str(); #endif @@ -335,46 +599,107 @@ void wxDataOutputStream::WriteString(const wxString& string) m_output->Write(buf, len); } -// Must be at global scope for VC++ 5 -extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes); - void wxDataOutputStream::WriteDouble(double d) { - char buf[10]; - #if wxUSE_APPLE_IEEE - ConvertToIeeeExtended(d, (unsigned char *)buf); -#else -#ifndef __VMS__ -# pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!" -#endif - buf[0] = '\0'; -#endif - m_output->Write(buf, 10); + if ( m_useExtendedPrecision ) + { + char buf[10]; + + wxConvertToIeeeExtended(d, (wxInt8 *)buf); + m_output->Write(buf, 10); + } + else +#endif // wxUSE_APPLE_IEEE + { + Float64Data floatData; + + floatData.f = (wxFloat64)d; + + if ( m_be_order == (wxBYTE_ORDER == wxBIG_ENDIAN) ) + { + Write32(floatData.i[0]); + Write32(floatData.i[1]); + } + else + { + Write32(floatData.i[1]); + Write32(floatData.i[0]); + } + } } -void wxDataOutputStream::Write64(const wxUint64 *buffer, size_t size) +void wxDataOutputStream::WriteFloat(float f) { - if (m_be_order) - { - for (wxUint32 i=0; iWrite(&i64, 8); + WriteDouble((double)f); } - } - else - { - for (wxUint32 i=0; iWrite(&i64, 8); + Float32Data floatData; + + floatData.f = (wxFloat32)f; + Write32(floatData.i); } - } } +#if wxHAS_INT64 +void wxDataOutputStream::Write64(const wxUint64 *buffer, size_t size) +{ +#ifndef wxLongLong_t + DoWriteLL(buffer, size, m_output, m_be_order); +#else + DoWriteI64(buffer, size, m_output, m_be_order); +#endif +} + +void wxDataOutputStream::Write64(const wxInt64 *buffer, size_t size) +{ +#ifndef wxLongLong_t + DoWriteLL(buffer, size, m_output, m_be_order); +#else + DoWriteI64(buffer, size, m_output, m_be_order); +#endif +} +#endif // wxHAS_INT64 + +#if defined(wxLongLong_t) && wxUSE_LONGLONG +void wxDataOutputStream::Write64(const wxULongLong *buffer, size_t size) +{ + DoWriteLL(buffer, size, m_output, m_be_order); +} + +void wxDataOutputStream::Write64(const wxLongLong *buffer, size_t size) +{ + DoWriteLL(buffer, size, m_output, m_be_order); +} +#endif // wxLongLong_t + +#if wxUSE_LONGLONG +void wxDataOutputStream::WriteLL(const wxULongLong *buffer, size_t size) +{ + DoWriteLL(buffer, size, m_output, m_be_order); +} + +void wxDataOutputStream::WriteLL(const wxLongLong *buffer, size_t size) +{ + DoWriteLL(buffer, size, m_output, m_be_order); +} + +void wxDataOutputStream::WriteLL(const wxLongLong &ll) +{ + WriteLL(&ll, 1); +} + +void wxDataOutputStream::WriteLL(const wxULongLong &ll) +{ + WriteLL(&ll, 1); +} +#endif // wxUSE_LONGLONG + void wxDataOutputStream::Write32(const wxUint32 *buffer, size_t size) { if (m_be_order) @@ -432,11 +757,12 @@ void wxDataOutputStream::WriteDouble(const double *buffer, size_t size) } } -wxDataOutputStream& wxDataOutputStream::operator<<(const wxChar *string) +void wxDataOutputStream::WriteFloat(const float *buffer, size_t size) { - Write32(wxStrlen(string)); - m_output->Write((const char *)string, wxStrlen(string)*sizeof(wxChar)); - return *this; + for (wxUint32 i=0; i