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fixed 64but bug with g_strEmpty initialization
[wxWidgets.git] / src / common / datstrm.cpp
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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#ifndef WX_PRECOMP
24#include "wx/defs.h"
25#endif
26
27#include "wx/datstrm.h"
3cacae09 28
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29// ---------------------------------------------------------------------------
30// wxDataInputStream
31// ---------------------------------------------------------------------------
32
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33wxDataInputStream::wxDataInputStream(wxInputStream& s)
34 : wxFilterInputStream(s)
cf447356 35{
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36}
37
3d4c6a21 38wxDataInputStream::~wxDataInputStream()
cf447356 39{
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40}
41
3d4c6a21 42unsigned long wxDataInputStream::Read32()
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43{
44 char buf[4];
45
3d4c6a21 46 Read(buf, 4);
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47
48 return (unsigned long)buf[0] |
49 ((unsigned long)buf[1] << 8) |
50 ((unsigned long)buf[2] << 16) |
51 ((unsigned long)buf[3] << 24);
52}
53
3d4c6a21 54unsigned short wxDataInputStream::Read16()
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55{
56 char buf[2];
57
3d4c6a21 58 Read(buf, 2);
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59
60 return (unsigned short)buf[0] |
61 ((unsigned short)buf[1] << 8);
62}
63
3d4c6a21 64unsigned char wxDataInputStream::Read8()
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65{
66 char buf;
67
3d4c6a21 68 Read(&buf, 1);
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69 return (unsigned char)buf;
70}
71
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72// Must be at global scope for VC++ 5
73extern "C" double ConvertFromIeeeExtended(const unsigned char *bytes);
74
3d4c6a21 75double wxDataInputStream::ReadDouble()
cf447356 76{
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77#if USE_APPLE_IEEE
78 char buf[10];
79
3d4c6a21 80 Read(buf, 10);
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81 return ConvertFromIeeeExtended((unsigned char *)buf);
82#else
83 return 0.0;
84#endif
85}
86
3d4c6a21 87wxString wxDataInputStream::ReadLine()
cf447356 88{
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89 char c, last_endl = 0;
90 bool end_line = FALSE;
91 wxString line;
92
93 while (!end_line) {
94 c = GetC();
95 switch (c) {
96 case '\n':
97 end_line = TRUE;
98 break;
99 case '\r':
100 last_endl = '\r';
101 break;
102 default:
103 if (last_endl == '\r') {
104 end_line = TRUE;
105 InputStreamBuffer()->WriteBack(c);
106 break;
107 }
108 line += c;
109 break;
110 }
111 }
112 return line;
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113}
114
3d4c6a21 115wxString wxDataInputStream::ReadString()
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116{
117 wxString wx_string;
118 char *string;
119 unsigned long len;
120
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121 len = Read32();
122 string = new char[len+1];
123
3d4c6a21 124 Read(string, len);
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125
126 string[len] = 0;
127 wx_string = string;
128 delete string;
129
a3622daa 130 return wx_string;
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131}
132
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133// ---------------------------------------------------------------------------
134// wxDataOutputStream
135// ---------------------------------------------------------------------------
136
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137wxDataOutputStream::wxDataOutputStream(wxOutputStream& s)
138 : wxFilterOutputStream(s)
139{
140}
141
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142wxDataOutputStream::~wxDataOutputStream()
143{
144}
145
3d4c6a21 146void wxDataOutputStream::Write32(unsigned long i)
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147{
148 char buf[4];
149
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150 buf[0] = i & 0xff;
151 buf[1] = (i >> 8) & 0xff;
152 buf[2] = (i >> 16) & 0xff;
153 buf[3] = (i >> 24) & 0xff;
3d4c6a21 154 Write(buf, 4);
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155}
156
3d4c6a21 157void wxDataOutputStream::Write16(unsigned short i)
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158{
159 char buf[2];
160
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161 buf[0] = i & 0xff;
162 buf[1] = (i >> 8) & 0xff;
3d4c6a21 163 Write(buf, 2);
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164}
165
3d4c6a21 166void wxDataOutputStream::Write8(unsigned char i)
cf447356 167{
3d4c6a21 168 Write(&i, 1);
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169}
170
3d4c6a21 171void wxDataOutputStream::WriteLine(const wxString& line)
cf447356 172{
2049ba38 173#ifdef __WXMSW__
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174 wxString tmp_string = line + "\r\n";
175#else
cf447356 176 wxString tmp_string = line + '\n';
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177#endif
178
3d4c6a21 179 Write((const char *) tmp_string, tmp_string.Length());
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180}
181
3d4c6a21 182void wxDataOutputStream::WriteString(const wxString& string)
eafc087e 183{
debe6624 184 Write32(string.Length());
3d4c6a21 185 Write((const char *) string, string.Length());
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186}
187
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188// Must be at global scope for VC++ 5
189extern "C" void ConvertToIeeeExtended(double num, unsigned char *bytes);
190
3d4c6a21 191void wxDataOutputStream::WriteDouble(double d)
cf447356 192{
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193 char buf[10];
194
0e338ff9 195#if USE_APPLE_IEEE
cf447356 196 ConvertToIeeeExtended(d, (unsigned char *)buf);
0e338ff9 197#else
a3622daa 198# pragma warning "wxDataStream::WriteDouble() not using IeeeExtended - will not work!"
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199 buf[0] = '\0';
200#endif
3d4c6a21 201 Write(buf, 10);
cf447356 202}
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203
204// ---------------------------------------------------------------------------
205// wxDataStream
206// ---------------------------------------------------------------------------
207
208wxDataStream::wxDataStream(wxStream& stream)
209 : wxDataInputStream(stream), wxDataOutputStream(stream)
210{
211}