| 1 | ///////////////////////////////////////////////////////////////////////////// |
| 2 | // Name: datstrm.cpp |
| 3 | // Purpose: Data stream classes |
| 4 | // Author: Guilhem Lavaux |
| 5 | // Modified by: |
| 6 | // Created: 28/06/98 |
| 7 | // RCS-ID: $Id$ |
| 8 | // Copyright: (c) Guilhem Lavaux |
| 9 | // Licence: wxWindows license |
| 10 | ///////////////////////////////////////////////////////////////////////////// |
| 11 | |
| 12 | #ifdef __GNUG__ |
| 13 | #pragma implementation "datstrm.h" |
| 14 | #endif |
| 15 | |
| 16 | // For compilers that support precompilation, includes "wx.h". |
| 17 | #include "wx/wxprec.h" |
| 18 | |
| 19 | #ifdef __BORLANDC__ |
| 20 | #pragma hdrstop |
| 21 | #endif |
| 22 | |
| 23 | #if wxUSE_STREAMS |
| 24 | |
| 25 | #include "wx/datstrm.h" |
| 26 | |
| 27 | // --------------------------------------------------------------------------- |
| 28 | // wxDataInputStream |
| 29 | // --------------------------------------------------------------------------- |
| 30 | |
| 31 | wxDataInputStream::wxDataInputStream(wxInputStream& s) |
| 32 | : m_input(&s), m_be_order(FALSE) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | wxDataInputStream::~wxDataInputStream() |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | wxUint32 wxDataInputStream::Read32() |
| 41 | { |
| 42 | wxUint32 i32; |
| 43 | |
| 44 | m_input->Read(&i32, 4); |
| 45 | |
| 46 | if (m_be_order) |
| 47 | return wxUINT32_SWAP_ON_LE(i32); |
| 48 | else |
| 49 | return wxUINT32_SWAP_ON_BE(i32); |
| 50 | } |
| 51 | |
| 52 | wxUint16 wxDataInputStream::Read16() |
| 53 | { |
| 54 | wxUint16 i16; |
| 55 | |
| 56 | m_input->Read(&i16, 2); |
| 57 | |
| 58 | if (m_be_order) |
| 59 | return wxUINT16_SWAP_ON_LE(i16); |
| 60 | else |
| 61 | return wxUINT16_SWAP_ON_BE(i16); |
| 62 | } |
| 63 | |
| 64 | wxUint8 wxDataInputStream::Read8() |
| 65 | { |
| 66 | wxUint8 buf; |
| 67 | |
| 68 | m_input->Read(&buf, 1); |
| 69 | return (wxUint8)buf; |
| 70 | } |
| 71 | |
| 72 | // Must be at global scope for VC++ 5 |
| 73 | extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes); |
| 74 | |
| 75 | double wxDataInputStream::ReadDouble() |
| 76 | { |
| 77 | #if wxUSE_APPLE_IEEE |
| 78 | char buf[10]; |
| 79 | |
| 80 | m_input->Read(buf, 10); |
| 81 | return ConvertFromIeeeExtended((unsigned char *)buf); |
| 82 | #else |
| 83 | return 0.0; |
| 84 | #endif |
| 85 | } |
| 86 | |
| 87 | wxString wxDataInputStream::ReadString() |
| 88 | { |
| 89 | size_t len; |
| 90 | |
| 91 | len = Read32(); |
| 92 | |
| 93 | if (len > 0) |
| 94 | { |
| 95 | #if wxUSE_UNICODE |
| 96 | char *tmp = new char[len + 1]; |
| 97 | m_input->Read(tmp, len); |
| 98 | tmp[len] = 0; |
| 99 | wxString s(tmp); |
| 100 | delete[] tmp; |
| 101 | #else |
| 102 | wxString s; |
| 103 | m_input->Read(s.GetWriteBuf(len), len); |
| 104 | s.UngetWriteBuf(); |
| 105 | #endif |
| 106 | return s; |
| 107 | } |
| 108 | else |
| 109 | return wxEmptyString; |
| 110 | } |
| 111 | |
| 112 | wxDataInputStream& wxDataInputStream::operator>>(wxString& s) |
| 113 | { |
| 114 | s = ReadString(); |
| 115 | return *this; |
| 116 | } |
| 117 | |
| 118 | wxDataInputStream& wxDataInputStream::operator>>(wxInt8& c) |
| 119 | { |
| 120 | c = (wxInt8)Read8(); |
| 121 | return *this; |
| 122 | } |
| 123 | |
| 124 | wxDataInputStream& wxDataInputStream::operator>>(wxInt16& i) |
| 125 | { |
| 126 | i = (wxInt16)Read16(); |
| 127 | return *this; |
| 128 | } |
| 129 | |
| 130 | wxDataInputStream& wxDataInputStream::operator>>(wxInt32& i) |
| 131 | { |
| 132 | i = (wxInt32)Read32(); |
| 133 | return *this; |
| 134 | } |
| 135 | |
| 136 | wxDataInputStream& wxDataInputStream::operator>>(wxUint8& c) |
| 137 | { |
| 138 | c = Read8(); |
| 139 | return *this; |
| 140 | } |
| 141 | |
| 142 | wxDataInputStream& wxDataInputStream::operator>>(wxUint16& i) |
| 143 | { |
| 144 | i = Read16(); |
| 145 | return *this; |
| 146 | } |
| 147 | |
| 148 | wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i) |
| 149 | { |
| 150 | i = Read32(); |
| 151 | return *this; |
| 152 | } |
| 153 | |
| 154 | wxDataInputStream& wxDataInputStream::operator>>(double& i) |
| 155 | { |
| 156 | i = ReadDouble(); |
| 157 | return *this; |
| 158 | } |
| 159 | |
| 160 | wxDataInputStream& wxDataInputStream::operator>>(float& f) |
| 161 | { |
| 162 | f = (float)ReadDouble(); |
| 163 | return *this; |
| 164 | } |
| 165 | |
| 166 | // --------------------------------------------------------------------------- |
| 167 | // wxDataOutputStream |
| 168 | // --------------------------------------------------------------------------- |
| 169 | |
| 170 | wxDataOutputStream::wxDataOutputStream(wxOutputStream& s) |
| 171 | : m_output(&s), m_be_order(FALSE) |
| 172 | { |
| 173 | } |
| 174 | |
| 175 | wxDataOutputStream::~wxDataOutputStream() |
| 176 | { |
| 177 | } |
| 178 | |
| 179 | void wxDataOutputStream::Write32(wxUint32 i) |
| 180 | { |
| 181 | wxUint32 i32; |
| 182 | |
| 183 | if (m_be_order) |
| 184 | i32 = wxUINT32_SWAP_ON_LE(i); |
| 185 | else |
| 186 | i32 = wxUINT32_SWAP_ON_BE(i); |
| 187 | m_output->Write(&i32, 4); |
| 188 | } |
| 189 | |
| 190 | void wxDataOutputStream::Write16(wxUint16 i) |
| 191 | { |
| 192 | wxUint16 i16; |
| 193 | |
| 194 | if (m_be_order) |
| 195 | i16 = wxUINT16_SWAP_ON_LE(i); |
| 196 | else |
| 197 | i16 = wxUINT16_SWAP_ON_BE(i); |
| 198 | |
| 199 | m_output->Write(&i16, 2); |
| 200 | } |
| 201 | |
| 202 | void wxDataOutputStream::Write8(wxUint8 i) |
| 203 | { |
| 204 | m_output->Write(&i, 1); |
| 205 | } |
| 206 | |
| 207 | void wxDataOutputStream::WriteString(const wxString& string) |
| 208 | { |
| 209 | const wxWX2MBbuf buf = string.mb_str(); |
| 210 | Write32(string.Len()); |
| 211 | if (string.Len() > 0) |
| 212 | m_output->Write(buf, string.Len()); |
| 213 | } |
| 214 | |
| 215 | // Must be at global scope for VC++ 5 |
| 216 | extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes); |
| 217 | |
| 218 | void wxDataOutputStream::WriteDouble(double d) |
| 219 | { |
| 220 | char buf[10]; |
| 221 | |
| 222 | #if wxUSE_APPLE_IEEE |
| 223 | ConvertToIeeeExtended(d, (unsigned char *)buf); |
| 224 | #else |
| 225 | #ifndef __VMS__ |
| 226 | # pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!" |
| 227 | #endif |
| 228 | buf[0] = '\0'; |
| 229 | #endif |
| 230 | m_output->Write(buf, 10); |
| 231 | } |
| 232 | |
| 233 | wxDataOutputStream& wxDataOutputStream::operator<<(const wxChar *string) |
| 234 | { |
| 235 | Write32(wxStrlen(string)); |
| 236 | m_output->Write((const char *)string, wxStrlen(string)*sizeof(wxChar)); |
| 237 | return *this; |
| 238 | } |
| 239 | |
| 240 | wxDataOutputStream& wxDataOutputStream::operator<<(wxString& string) |
| 241 | { |
| 242 | WriteString(string); |
| 243 | return *this; |
| 244 | } |
| 245 | |
| 246 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt8 c) |
| 247 | { |
| 248 | Write8((wxUint8)c); |
| 249 | return *this; |
| 250 | } |
| 251 | |
| 252 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt16 i) |
| 253 | { |
| 254 | Write16((wxUint16)i); |
| 255 | return *this; |
| 256 | } |
| 257 | |
| 258 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt32 i) |
| 259 | { |
| 260 | Write32((wxUint32)i); |
| 261 | return *this; |
| 262 | } |
| 263 | |
| 264 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint8 c) |
| 265 | { |
| 266 | Write8(c); |
| 267 | return *this; |
| 268 | } |
| 269 | |
| 270 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint16 i) |
| 271 | { |
| 272 | Write16(i); |
| 273 | return *this; |
| 274 | } |
| 275 | |
| 276 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint32 i) |
| 277 | { |
| 278 | Write32(i); |
| 279 | return *this; |
| 280 | } |
| 281 | |
| 282 | wxDataOutputStream& wxDataOutputStream::operator<<(double f) |
| 283 | { |
| 284 | WriteDouble(f); |
| 285 | return *this; |
| 286 | } |
| 287 | |
| 288 | wxDataOutputStream& wxDataOutputStream::operator<<(float f) |
| 289 | { |
| 290 | WriteDouble((double)f); |
| 291 | return *this; |
| 292 | } |
| 293 | |
| 294 | #endif |
| 295 | // wxUSE_STREAMS |
| 296 | |