| 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) |
| 33 | { |
| 34 | } |
| 35 | |
| 36 | wxDataInputStream::~wxDataInputStream() |
| 37 | { |
| 38 | } |
| 39 | |
| 40 | wxUint32 wxDataInputStream::Read32() |
| 41 | { |
| 42 | char buf[4]; |
| 43 | |
| 44 | m_input->Read(buf, 4); |
| 45 | |
| 46 | return (wxUint32)buf[0] | |
| 47 | ((wxUint32)buf[1] << 8) | |
| 48 | ((wxUint32)buf[2] << 16) | |
| 49 | ((wxUint32)buf[3] << 24); |
| 50 | } |
| 51 | |
| 52 | wxUint16 wxDataInputStream::Read16() |
| 53 | { |
| 54 | char buf[2]; |
| 55 | |
| 56 | m_input->Read(buf, 2); |
| 57 | |
| 58 | return (wxUint16)buf[0] | |
| 59 | ((wxUint16)buf[1] << 8); |
| 60 | } |
| 61 | |
| 62 | wxUint8 wxDataInputStream::Read8() |
| 63 | { |
| 64 | wxUint8 buf; |
| 65 | |
| 66 | m_input->Read((char *)&buf, 1); |
| 67 | return (wxUint8)buf; |
| 68 | } |
| 69 | |
| 70 | // Must be at global scope for VC++ 5 |
| 71 | extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes); |
| 72 | |
| 73 | double wxDataInputStream::ReadDouble() |
| 74 | { |
| 75 | #if wxUSE_APPLE_IEEE |
| 76 | char buf[10]; |
| 77 | |
| 78 | m_input->Read(buf, 10); |
| 79 | return ConvertFromIeeeExtended((unsigned char *)buf); |
| 80 | #else |
| 81 | return 0.0; |
| 82 | #endif |
| 83 | } |
| 84 | |
| 85 | wxString wxDataInputStream::ReadString() |
| 86 | { |
| 87 | wxString wx_string; |
| 88 | char *string; |
| 89 | unsigned long len; |
| 90 | |
| 91 | len = Read32(); |
| 92 | string = new char[len+1]; |
| 93 | |
| 94 | m_input->Read(string, len); |
| 95 | |
| 96 | string[len] = 0; |
| 97 | wx_string = string; |
| 98 | delete string; |
| 99 | |
| 100 | return wx_string; |
| 101 | } |
| 102 | |
| 103 | wxDataInputStream& wxDataInputStream::operator>>(wxString& s) |
| 104 | { |
| 105 | s = ReadString(); |
| 106 | return *this; |
| 107 | } |
| 108 | |
| 109 | wxDataInputStream& wxDataInputStream::operator>>(wxInt8& c) |
| 110 | { |
| 111 | c = (wxInt8)Read8(); |
| 112 | return *this; |
| 113 | } |
| 114 | |
| 115 | wxDataInputStream& wxDataInputStream::operator>>(wxInt16& i) |
| 116 | { |
| 117 | i = (wxInt16)Read16(); |
| 118 | return *this; |
| 119 | } |
| 120 | |
| 121 | wxDataInputStream& wxDataInputStream::operator>>(wxInt32& i) |
| 122 | { |
| 123 | i = (wxInt32)Read32(); |
| 124 | return *this; |
| 125 | } |
| 126 | |
| 127 | wxDataInputStream& wxDataInputStream::operator>>(wxUint8& c) |
| 128 | { |
| 129 | c = Read8(); |
| 130 | return *this; |
| 131 | } |
| 132 | |
| 133 | wxDataInputStream& wxDataInputStream::operator>>(wxUint16& i) |
| 134 | { |
| 135 | i = Read16(); |
| 136 | return *this; |
| 137 | } |
| 138 | |
| 139 | wxDataInputStream& wxDataInputStream::operator>>(wxUint32& i) |
| 140 | { |
| 141 | i = Read32(); |
| 142 | return *this; |
| 143 | } |
| 144 | |
| 145 | wxDataInputStream& wxDataInputStream::operator>>(double& i) |
| 146 | { |
| 147 | i = ReadDouble(); |
| 148 | return *this; |
| 149 | } |
| 150 | |
| 151 | wxDataInputStream& wxDataInputStream::operator>>(float& f) |
| 152 | { |
| 153 | f = (float)ReadDouble(); |
| 154 | return *this; |
| 155 | } |
| 156 | |
| 157 | // --------------------------------------------------------------------------- |
| 158 | // wxDataOutputStream |
| 159 | // --------------------------------------------------------------------------- |
| 160 | |
| 161 | wxDataOutputStream::wxDataOutputStream(wxOutputStream& s) |
| 162 | : m_output(&s) |
| 163 | { |
| 164 | } |
| 165 | |
| 166 | wxDataOutputStream::~wxDataOutputStream() |
| 167 | { |
| 168 | } |
| 169 | |
| 170 | void wxDataOutputStream::Write32(wxUint32 i) |
| 171 | { |
| 172 | char buf[4]; |
| 173 | |
| 174 | buf[0] = i & 0xff; |
| 175 | buf[1] = (i >> 8) & 0xff; |
| 176 | buf[2] = (i >> 16) & 0xff; |
| 177 | buf[3] = (i >> 24) & 0xff; |
| 178 | m_output->Write(buf, 4); |
| 179 | } |
| 180 | |
| 181 | void wxDataOutputStream::Write16(wxUint16 i) |
| 182 | { |
| 183 | char buf[2]; |
| 184 | |
| 185 | buf[0] = i & 0xff; |
| 186 | buf[1] = (i >> 8) & 0xff; |
| 187 | m_output->Write(buf, 2); |
| 188 | } |
| 189 | |
| 190 | void wxDataOutputStream::Write8(wxUint8 i) |
| 191 | { |
| 192 | m_output->Write(&i, 1); |
| 193 | } |
| 194 | |
| 195 | void wxDataOutputStream::WriteString(const wxString& string) |
| 196 | { |
| 197 | Write32(string.Length()); |
| 198 | m_output->Write((const wxChar *) string, string.Length()*sizeof(wxChar)); |
| 199 | } |
| 200 | |
| 201 | // Must be at global scope for VC++ 5 |
| 202 | extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes); |
| 203 | |
| 204 | void wxDataOutputStream::WriteDouble(double d) |
| 205 | { |
| 206 | char buf[10]; |
| 207 | |
| 208 | #if wxUSE_APPLE_IEEE |
| 209 | ConvertToIeeeExtended(d, (unsigned char *)buf); |
| 210 | #else |
| 211 | # pragma warning "wxDataOutputStream::WriteDouble() not using IeeeExtended - will not work!" |
| 212 | buf[0] = '\0'; |
| 213 | #endif |
| 214 | m_output->Write(buf, 10); |
| 215 | } |
| 216 | |
| 217 | wxDataOutputStream& wxDataOutputStream::operator<<(const wxChar *string) |
| 218 | { |
| 219 | Write32(wxStrlen(string)); |
| 220 | m_output->Write((const char *)string, wxStrlen(string)*sizeof(wxChar)); |
| 221 | return *this; |
| 222 | } |
| 223 | |
| 224 | wxDataOutputStream& wxDataOutputStream::operator<<(wxString& string) |
| 225 | { |
| 226 | WriteString(string); |
| 227 | return *this; |
| 228 | } |
| 229 | |
| 230 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt8 c) |
| 231 | { |
| 232 | Write8((wxUint8)c); |
| 233 | return *this; |
| 234 | } |
| 235 | |
| 236 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt16 i) |
| 237 | { |
| 238 | Write16((wxUint16)i); |
| 239 | return *this; |
| 240 | } |
| 241 | |
| 242 | wxDataOutputStream& wxDataOutputStream::operator<<(wxInt32 i) |
| 243 | { |
| 244 | Write32((wxUint32)i); |
| 245 | return *this; |
| 246 | } |
| 247 | |
| 248 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint8 c) |
| 249 | { |
| 250 | Write8(c); |
| 251 | return *this; |
| 252 | } |
| 253 | |
| 254 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint16 i) |
| 255 | { |
| 256 | Write16(i); |
| 257 | return *this; |
| 258 | } |
| 259 | |
| 260 | wxDataOutputStream& wxDataOutputStream::operator<<(wxUint32 i) |
| 261 | { |
| 262 | Write32(i); |
| 263 | return *this; |
| 264 | } |
| 265 | |
| 266 | wxDataOutputStream& wxDataOutputStream::operator<<(double f) |
| 267 | { |
| 268 | WriteDouble(f); |
| 269 | return *this; |
| 270 | } |
| 271 | |
| 272 | wxDataOutputStream& wxDataOutputStream::operator<<(float f) |
| 273 | { |
| 274 | WriteDouble((double)f); |
| 275 | return *this; |
| 276 | } |
| 277 | |
| 278 | #endif |
| 279 | // wxUSE_STREAMS |
| 280 | |