author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 14 Sep 2010 21:31:28 +0300 | |
branch | RCL_3 |
changeset 70 | e8965914fac7 |
parent 66 | 8b7f4e561641 |
permissions | -rw-r--r-- |
0
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Revision: 200949
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/* |
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* Copyright (c) 2005-2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of the License "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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8 |
* |
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9 |
* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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11 |
* |
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12 |
* Contributors: |
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13 |
* |
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|
14 |
* Description: |
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Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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15 |
* |
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16 |
*/ |
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17 |
|
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18 |
|
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|
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Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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#include "streamreader.h" |
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#include "options.h" |
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#include "ucmp.h" |
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#include "utf8.h" |
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24 |
|
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25 |
StreamReader::StreamReader(istream& aFile) |
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:iFileStream(&aFile), |
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iBuf(NULL), |
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iCurrentPos(NULL), |
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iLength(0), |
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iStreamOwnership(false) |
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31 |
{ |
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32 |
} |
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33 |
|
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34 |
|
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StreamReader::StreamReader(const char* aRegFile) |
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:iBuf (0) , |
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iCurrentPos (0), |
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iStreamOwnership(true) |
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39 |
{ |
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iFileStream = new ifstream(aRegFile, ios::binary ); |
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41 |
} |
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42 |
|
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bool StreamReader::Initialise() |
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44 |
{ |
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// get length of file: |
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iFileStream->seekg (0, ios::end); |
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iLength = iFileStream->tellg(); |
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48 |
|
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//checks if file is empty |
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if(!iLength) |
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51 |
{ |
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return true; |
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53 |
} |
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54 |
|
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iFileStream->seekg (0, ios::beg); |
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// allocate memory: |
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iBuf = new char [iLength]; |
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iCurrentPos = iBuf; |
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// read data as a block: |
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iFileStream->read (iCurrentPos,iLength); |
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61 |
|
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62 |
return false; |
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63 |
} |
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64 |
|
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65 |
|
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Revision: 200949
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66 |
unsigned int StreamReader::ReadInt32() |
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67 |
{ |
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68 |
int i = 0; |
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if ((iLength - (iCurrentPos - iBuf)) < 4) |
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70 |
{ |
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throw EInvalidFile; |
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72 |
} |
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73 |
unsigned int result = (iCurrentPos[i] & 0x000000FF) + ((iCurrentPos[i+1] << 8) & 0x0000FF00) + |
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((iCurrentPos[i+2] << 16) & 0x00FF0000) + ((iCurrentPos[i+3] << 24) & 0xFF000000) ; |
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75 |
|
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Revision: 200949
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76 |
iCurrentPos += 4; |
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Revision: 200949
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77 |
return result; |
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78 |
} |
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79 |
|
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Revision: 200949
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80 |
unsigned short int StreamReader::ReadInt16() |
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81 |
{ |
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82 |
int i = 0; |
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Revision: 200949
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83 |
if ((iLength - (iCurrentPos - iBuf)) < 2) |
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84 |
{ |
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Revision: 200949
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|
85 |
throw EInvalidFile; |
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Revision: 200949
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86 |
} |
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Revision: 200949
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87 |
unsigned short int result = (iCurrentPos[i] & 0x00FF) |
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Revision: 200949
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|
88 |
+ ((iCurrentPos[i+1] << 8) & 0xFF00); |
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Revision: 200949
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|
89 |
|
ba25891c3a9e
Revision: 200949
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|
90 |
iCurrentPos += 2; |
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|
91 |
|
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Revision: 200949
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|
92 |
return result; |
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|
93 |
} |
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|
94 |
|
ba25891c3a9e
Revision: 200949
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|
95 |
unsigned char StreamReader::ReadInt8() |
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Revision: 200949
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|
96 |
{ |
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Revision: 200949
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|
97 |
int i = 0; |
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Revision: 200949
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|
98 |
if ((iLength - (iCurrentPos - iBuf)) < 1) |
ba25891c3a9e
Revision: 200949
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|
99 |
{ |
ba25891c3a9e
Revision: 200949
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|
100 |
throw EInvalidFile; |
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|
101 |
} |
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|
102 |
unsigned char result = iCurrentPos[i]; |
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Revision: 200949
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|
103 |
iCurrentPos += 1; |
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|
104 |
|
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
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|
105 |
return result; |
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diff
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|
106 |
} |
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|
107 |
|
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|
108 |
|
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|
109 |
unsigned char StreamReader::Peek() |
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|
110 |
{ |
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|
111 |
unsigned char result = ReadInt8(); |
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|
112 |
iCurrentPos -= 1; |
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|
113 |
return result; |
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114 |
} |
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|
115 |
|
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|
116 |
|
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117 |
char* StreamReader::ReadDescriptor() |
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118 |
{ |
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119 |
bool isWide = false; |
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Revision: 200949
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120 |
int len = GetDescriptorInfo(isWide); |
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|
121 |
|
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122 |
// allocate a buffer big enough to hold this stuff and |
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123 |
// a null at the end |
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124 |
char *result = NULL; |
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125 |
|
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126 |
TInt32 bytesRead = 0; |
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127 |
|
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128 |
if(isWide) |
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129 |
{ |
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130 |
wchar_t* buffer = new wchar_t[len + 1]; |
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|
131 |
TMemoryUnicodeSink unicodeTarget(buffer); |
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|
132 |
|
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133 |
TUnicodeExpander converter; |
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|
134 |
|
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135 |
converter.Expand(unicodeTarget, (const TUint8*)iCurrentPos, len, KMaxTInt, NULL, &bytesRead); |
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|
136 |
|
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|
137 |
buffer[len] = 0; |
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Revision: 200949
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diff
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|
138 |
|
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Revision: 200949
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|
139 |
// UTF16toUTF8Conversion allocates memory |
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Revision: 200949
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140 |
// This memory will be freed by the caller of this function |
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Revision: 200949
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|
141 |
result = UTF16toUTF8Convert(buffer, len); |
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Revision: 200949
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|
142 |
|
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Revision: 200949
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|
143 |
delete []buffer; |
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Revision: 200949
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|
144 |
} |
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Revision: 200949
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|
145 |
else |
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Revision: 200949
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diff
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|
146 |
{ |
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Revision: 200949
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|
147 |
// This memory will be freed by the caller of this function |
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Revision: 200949
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|
148 |
result = new char[len + 2]; |
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Revision: 200949
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diff
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|
149 |
memcpy(result, iCurrentPos, len); |
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Revision: 200949
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diff
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|
150 |
|
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Revision: 200949
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diff
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|
151 |
bytesRead = len; |
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Revision: 200949
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|
152 |
result[len] = 0; |
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Revision: 200949
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diff
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|
153 |
} |
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Revision: 200949
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diff
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|
154 |
|
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Revision: 200949
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|
155 |
iCurrentPos += bytesRead; |
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Revision: 200949
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|
156 |
return result; |
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Revision: 200949
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diff
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|
157 |
} |
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Revision: 200949
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parents:
diff
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|
158 |
|
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Revision: 200949
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diff
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|
159 |
|
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Revision: 200949
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diff
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|
160 |
int StreamReader::GetDescriptorInfo(bool& aIsWide, const bool &aConstReadPtr) |
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Revision: 200949
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|
161 |
{ |
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Revision: 200949
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diff
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|
162 |
int len; |
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Revision: 200949
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parents:
diff
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|
163 |
unsigned char cardinality = Peek(); |
ba25891c3a9e
Revision: 200949
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parents:
diff
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|
164 |
if ((cardinality & 0x01) == 0) |
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Revision: 200949
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parents:
diff
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|
165 |
{ |
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Revision: 200949
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parents:
diff
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|
166 |
// 8 bit cardinality |
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Revision: 200949
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parents:
diff
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|
167 |
len = ReadInt8() & 0xFF; |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
168 |
// shift of the cardinality bit |
ba25891c3a9e
Revision: 200949
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parents:
diff
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|
169 |
len >>= 1; |
ba25891c3a9e
Revision: 200949
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parents:
diff
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|
170 |
|
ba25891c3a9e
Revision: 200949
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parents:
diff
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|
171 |
if(aConstReadPtr) |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
172 |
{ |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
173 |
iCurrentPos -= 1; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
174 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
175 |
} |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
176 |
else if ((cardinality & 0x02) == 0) |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
177 |
{ |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
178 |
// 16 bit cardinality |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
179 |
len = ReadInt16() & 0xFFFF; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
180 |
// shift off the cardinality bits |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
181 |
len >>= 2; |
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
182 |
|
ba25891c3a9e
Revision: 200949
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parents:
diff
changeset
|
183 |
if(aConstReadPtr) |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
184 |
{ |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
185 |
iCurrentPos -= 2; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
186 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
187 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
188 |
else if ((cardinality & 0x04) == 0) |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
189 |
{ |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
190 |
// 32 bit cardinality |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
191 |
len = ReadInt32(); |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
192 |
// shift off the cardinality bits |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
193 |
len >>= 3; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
194 |
|
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
195 |
if(aConstReadPtr) |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
196 |
{ |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
197 |
iCurrentPos -= 4; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
198 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
199 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
200 |
else |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
201 |
{ |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
202 |
// WTF. Unknown cardinality |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
203 |
throw EInvalidFile; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
204 |
} |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
205 |
|
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
206 |
// read the wideness of the characters |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
207 |
aIsWide = ((len & 0x01) == 0); |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
208 |
// shift off the wideness bit |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
209 |
len >>= 1; |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
210 |
|
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
211 |
// check if we have enough length left in the buffer |
ba25891c3a9e
Revision: 200949
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
212 |
if ((iLength - (iCurrentPos - iBuf)) < len) |
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{ |
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throw EInvalidFile; |
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} |
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return len; |
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} |
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char* StreamReader::UTF16toUTF8Convert(wchar_t* aSource, int aSrcLength) |
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{ |
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int targetLength = 2 * aSrcLength; |
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int totalSize = targetLength + 1; |
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// This memory will be freed by the caller of this function |
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char *ptrUtf8 = new char[targetLength + 1]; |
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|
66 | 228 |
UTF16* sourceStart = static_cast<UTF16*>(aSource); |
0
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UTF16* sourceEnd = sourceStart + aSrcLength; |
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UTF8* targetStart = reinterpret_cast<UTF8*>(ptrUtf8); |
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UTF8* targetEnd; |
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|
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ConversionResult result = ok; |
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do |
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{ |
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targetEnd = targetStart + targetLength; |
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result = ConvertUTF16toUTF8(&sourceStart, sourceEnd, &targetStart, targetEnd); |
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|
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if(targetExhausted != result) |
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{ |
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break; |
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} |
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|
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// Memory reallocation |
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|
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int endOffset = (char *)targetStart - ptrUtf8; |
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|
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char *temp = new char[totalSize + targetLength]; |
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|
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memcpy(temp, ptrUtf8, totalSize); |
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delete[] ptrUtf8; |
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|
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ptrUtf8 = temp; |
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|
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// New source pointer |
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targetStart = reinterpret_cast<UTF8*>(ptrUtf8) + endOffset; |
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totalSize += targetLength; |
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}while(true); |
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|
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// NULL terminating the UTF8 string |
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*targetStart = 0; |
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|
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return ptrUtf8; |
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} |
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|
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|
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StreamReader::~StreamReader() |
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{ |
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if(iStreamOwnership) |
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{ |
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ifstream* str = static_cast<ifstream *>(iFileStream); |
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str->close(); |
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delete iFileStream; |
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} |
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|
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delete [] iBuf; |
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} |
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278 |