author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Thu, 01 Apr 2010 00:15:09 +0300 | |
branch | RCL_3 |
changeset 15 | 18da5738c9b6 |
parent 0 | e4d67989cc36 |
permissions | -rw-r--r-- |
0
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// Copyright (c) 2001-2009 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 "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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// |
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// Initial Contributors: |
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// Nokia Corporation - initial contribution. |
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// |
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// Contributors: |
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// |
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// Description: |
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// |
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#include <escapeutils.h> |
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#include <utf.h> |
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#include "EscapeUtilsInternal.h" |
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// Constants |
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// |
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_LIT(KHexDigit, "0123456789ABCDEF"); |
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_LIT(KExcludedData, "{}|\\^`<>#%\""); |
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_LIT8(KQueryData8, ";/?:@&=+$,[]"); |
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_LIT8(KPathData8, "/;=?[]"); |
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_LIT8(KAuthData8, ";:@?/[]"); |
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_LIT8(KUrlEncoded8, ";/?:@&=+$[]!\'()~*"); |
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_LIT16(KQueryData16, ";/?:@&=+$,[]"); |
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_LIT16(KPathData16, "/;=?[]"); |
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_LIT16(KAuthData16, ";:@?/[]"); |
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_LIT16(KUrlEncoded16, ";/?:@&=+$[]!\'()~"); |
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const TInt KEscapeUtilsConversionBufferSize = 50; |
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const TInt KEscapeIndicator = '%'; |
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const TInt KEscapeTripleLength = 3; |
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const TInt KEscDelimiterPos = 0; |
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const TInt KMostSignificantNibblePos = 1; |
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const TInt KLeastSignificantNibblePos = 2; |
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// Panic category |
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// |
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#ifdef _DEBUG |
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_LIT(KEscapeUtilsPanicCategory, "ESC-UTILS"); |
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#endif |
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// |
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// |
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// Implementation of EscapeUtils |
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// |
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// |
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/** |
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Escape encodes excluded and reserved characters in the data as escape triples. |
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The reserved characters are defined by the escape mode. These characters and the |
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set of excluded characters specified by RFC2396 form the entire set of excluded data. |
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@since 6.0 |
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@leave KUriUtilsErr16BitChar. A 16-Bit character was found in the data to be escape encoded. |
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@param aData A descriptor with the data to encode. |
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@param aEscapeMode An enum specifying the escape mode. |
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@return A pointer to a descriptor buffer which contains the escape encoded data. |
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*/ |
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EXPORT_C HBufC8* EscapeUtils::EscapeEncodeL(const TDesC8& aData, TEscapeMode aEscapeMode) |
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{ |
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// Need descriptor pointer to reserved characters... |
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TPtrC8 reserved; |
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switch (aEscapeMode) |
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{ |
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case EEscapeNormal: |
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{ |
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// This is normal operation - no reserved chars |
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reserved.Set(KNullDesC8); |
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} break; |
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case EEscapeQuery: |
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{ |
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// Reserved data in a URI query - ; / ? : @ & = + $ , |
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reserved.Set(KQueryData8()); |
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} break; |
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case EEscapePath: |
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{ |
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// Reserved data in a URI path segment - / ; = ? |
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reserved.Set(KPathData8()); |
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} break; |
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case EEscapeAuth: |
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{ |
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// Reserved data in a URI authority - ; : @ ? / |
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reserved.Set(KAuthData8()); |
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} break; |
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case EEscapeUrlEncoded: |
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{ |
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// Reserved data in Url Encoded data - ; / ? : @ & = + $ [ ] ! ' ( ) ~ * |
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reserved.Set(KUrlEncoded8()); |
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} break; |
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default: |
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// Not supported return NULL |
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__ASSERT_DEBUG(EFalse, User::Panic(KEscapeUtilsPanicCategory, KUriUtilsErrBadEscapeMode)); |
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return NULL; |
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} |
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return EscapeEncodeL(aData, reserved); |
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} |
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|
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104 |
/** |
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Escape encodes excluded and reserved characters in the data as escape triples. The |
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reserved characters are defined by the escape mode. These characters and the set of |
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excluded characters specified by RFC2396 form the entire set of excluded data. |
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108 |
|
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@since 6.0 |
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@leave KUriUtilsErr16BitChar. A 16-Bit character was found in the data to be escape encoded. |
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@param aData A descriptor with the data to encode. |
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@param aEscapeMode An enum specifying the escape mode. |
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@return A pointer to a descriptor buffer which contains the escape encoded data. |
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*/ |
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EXPORT_C HBufC16* EscapeUtils::EscapeEncodeL(const TDesC16& aData, TEscapeMode aEscapeMode) |
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{ |
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// Need to descriptor pointer to reserved chars |
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TPtrC16 reserved; |
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119 |
|
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switch (aEscapeMode) |
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121 |
{ |
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case EEscapeNormal: |
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{ |
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// This is normal operation - no reserved chars |
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reserved.Set(KNullDesC16); |
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} break; |
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case EEscapeQuery: |
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{ |
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// Reserved data in a URI query - ; / ? : @ & = + $ [], |
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reserved.Set(KQueryData16()); |
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} break; |
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case EEscapePath: |
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133 |
{ |
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// Reserved data in a URI path segment - / ; = ? [] |
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reserved.Set(KPathData16()); |
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} break; |
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case EEscapeAuth: |
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138 |
{ |
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// Reserved data in a URI authority - ; : @ ? / [] |
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reserved.Set(KAuthData16()); |
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} break; |
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case EEscapeUrlEncoded: |
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143 |
{ |
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// Reserved data in Url Encoded data - ; / ? : @ & = + $ [ ] ! ' ( ) ~ |
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reserved.Set(KUrlEncoded16()); |
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} break; |
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default: |
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// Not supported return NULL |
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__ASSERT_DEBUG(EFalse, User::Panic(KEscapeUtilsPanicCategory, KUriUtilsErrBadEscapeMode)); |
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return NULL; |
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} |
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return EscapeEncodeL(aData, reserved); |
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} |
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154 |
|
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/** |
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Escape encodes excluded and reserved characters in the data as escape triples. These |
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characters and the set of excluded characters specified by RFC2396 form the entire set |
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of excluded data. |
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159 |
|
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@since 6.0 |
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@leave KUriUtilsErr16BitChar. A 16-Bit character was found in the data to be escape encoded. |
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@param aData A descriptor with the data to encode. |
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@param aReservedChars A descriptor with the reserved characters. |
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@return A pointer to a descriptor buffer which contains the escape encoded data. |
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*/ |
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EXPORT_C HBufC8* EscapeUtils::EscapeEncodeL(const TDesC8& aData, const TDesC8& aReservedChars) |
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{ |
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// Allocate space to build escaped url - consider worse case; all characters are excluded => length x 3 |
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HBufC8* buf = HBufC8::NewLC(aData.Length()*3); |
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TPtr8 escaped = buf->Des(); |
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171 |
|
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User::LeaveIfError(EscapeEncodeData(aData, aReservedChars, escaped)); |
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HBufC8* encoded = escaped.AllocL(); |
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174 |
|
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CleanupStack::PopAndDestroy(buf); |
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return encoded; |
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} |
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178 |
|
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/** |
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Escape encodes excluded and reserved characters in the data as escape triples. These characters |
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and the set of excluded characters specified by RFC2396 form the entire set of excluded data. |
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182 |
|
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@since 6.0 |
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@leave KUriUtilsErr16BitChar. A 16-Bit character was found in the data to be escape encoded. |
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@param aData A descriptor with the data to encode. |
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@param aReservedChars A descriptor with the reserved characters. |
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@return A pointer to a descriptor buffer which contains the escape encoded data. |
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*/ |
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EXPORT_C HBufC16* EscapeUtils::EscapeEncodeL(const TDesC16& aData, const TDesC16& aReservedChars) |
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{ |
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// Allocate space to build escaped url - consider worse case; all characters are excluded => length x 3 |
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HBufC16* buf = HBufC16::NewLC(aData.Length()*3); |
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TPtr16 escaped = buf->Des(); |
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194 |
|
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User::LeaveIfError(EscapeEncodeData(aData, aReservedChars, escaped)); |
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HBufC16* encoded = escaped.AllocL(); |
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197 |
|
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CleanupStack::PopAndDestroy(buf); |
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return encoded; |
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} |
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201 |
|
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/** |
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Escape decodes the data. |
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204 |
|
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@since 6.0 |
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@param aData A descriptor with the data to decode. |
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@return A pointer to a descriptor buffer which contains the escape decoded data. |
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*/ |
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EXPORT_C HBufC8* EscapeUtils::EscapeDecodeL(const TDesC8& aData) |
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{ |
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// Allocate space to build unescaped data |
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HBufC8* buf = HBufC8::NewLC(aData.Length()); |
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TPtr8 unescaped = buf->Des(); |
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|
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User::LeaveIfError(EscapeDecodeData(aData, unescaped)); |
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HBufC8* decoded = unescaped.AllocL(); |
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|
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CleanupStack::PopAndDestroy(buf); |
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return decoded; |
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} |
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|
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/** |
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Escape decodes the data. |
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|
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@since 6.0 |
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@param aData A descriptor with the data to decode. |
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@return A pointer to a descriptor buffer which contains the escape decoded data. |
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*/ |
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EXPORT_C HBufC16* EscapeUtils::EscapeDecodeL(const TDesC16& aData) |
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{ |
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// Allocate space to build unescaped data |
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HBufC16* buf = HBufC16::NewLC(aData.Length()); |
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TPtr16 unescaped = buf->Des(); |
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|
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User::LeaveIfError(EscapeDecodeData(aData, unescaped)); |
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HBufC16* decoded = unescaped.AllocL(); |
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|
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CleanupStack::PopAndDestroy(buf); |
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return decoded; |
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} |
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|
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/** |
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@internalComponent |
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|
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escape encode only those characters that cannot be in a URI. assume all %hh are %encoded already. |
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|
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@param aData The descriptor buffer to be escape encoded. |
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@return A pointer to a descriptor buffer which contains the escape encoded data. |
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*/ |
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HBufC8* EscapeUtils::ReEscapeEncodeL(const TDesC8& aData) |
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{ |
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// Descriptor to hex digits and excluded chars |
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const TDesC& KHexChars = KHexDigit; |
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|
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const TInt length = aData.Length(); |
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|
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// find out how many characters need escape encoding |
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TInt count = 0; |
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for( TInt i=0; i<length; ++i ) |
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{ |
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TChar current( aData[i] ); |
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if( EscapeUtils::IsExcludedChar(current) && current != KFragmentDelimiter && |
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!(current == KEscapeIndicator && i+2<length && TChar(aData[i+1]).IsHexDigit() && TChar(aData[i+2]).IsHexDigit() ) ) |
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{ |
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count++; |
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} |
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} |
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if( count == 0) // no encoding needed, just allocate and return the whole string |
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{ |
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return aData.AllocL(); |
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} |
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// pre-allocate space for the descriptor |
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HBufC8* buf = HBufC8::NewLC( aData.Length() + count*2 ); // two extra chars for each escaped |
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TPtr8 escaped = buf->Des(); |
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|
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for( TInt i=0; i<length; ++i ) |
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{ |
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// Check if current character must be escaped |
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TChar current ( aData[i] ); |
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// Check if current character is excluded, but not if it appears to be escape encoded |
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TBool excluded = EscapeUtils::IsExcludedChar(current) && current != KFragmentDelimiter && |
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!(current == KEscapeIndicator && i+2<length && TChar(aData[i+1]).IsHexDigit() && TChar(aData[i+2]).IsHexDigit() ); |
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|
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if( excluded ) |
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{ |
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// Excluded char - escape encode |
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escaped.Append(KEscapeIndicator); |
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const TInt mostSignificantNibble = (current & 0xf0) >> 4; // Get msNibble by masking against 11110000 and dividing by 16 (>>4) |
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escaped.Append(KHexChars[mostSignificantNibble]); |
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const TInt leastSignificantNibble = (current & 0x0f); // Get lsNibble by masking against 00001111 |
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escaped.Append(KHexChars[leastSignificantNibble]); |
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} |
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else |
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{ |
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// Not an excluded char - just append |
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escaped.Append(current); |
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} |
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} |
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CleanupStack::Pop(buf); |
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return buf; |
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} |
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|
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|
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/** |
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|
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Converts UNICODE data into UTF8 format. |
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|
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@since 6.0 |
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@leave KUriUtilsCannotConvert. When the input data cannot be converted. |
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@param aString A descriptor with the data to convert. |
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311 |
@return A pointer to an 8-bit descriptor buffer which contains UTF8 data. |
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312 |
*/ |
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313 |
EXPORT_C HBufC8* EscapeUtils::ConvertFromUnicodeToUtf8L(const TDesC& aString) |
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314 |
{ |
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315 |
// Return an empty buffer straight-away |
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316 |
if( aString.Compare(KNullDesC) == 0 ) |
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317 |
return KNullDesC8().AllocL(); |
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318 |
|
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319 |
// Convert from Unicode to UTF8 |
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TPtrC unicode = aString; |
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TBuf8<KEscapeUtilsConversionBufferSize> buf; |
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HBufC8* utf8Buffer = HBufC8::NewLC(unicode.Length()); |
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TPtr8 utf8 = utf8Buffer->Des(); |
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324 |
|
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325 |
// Loop until all of the filename is converted |
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326 |
FOREVER |
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327 |
{ |
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const TInt returnValue = CnvUtfConverter::ConvertFromUnicodeToUtf8(buf, unicode); |
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if( returnValue == CnvUtfConverter::EErrorIllFormedInput || returnValue < 0) |
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User::Leave(KUriUtilsCannotConvert); |
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331 |
|
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332 |
// Is escapedFullPath too small? |
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333 |
if( utf8.Length() + buf.Length() > utf8.MaxLength() ) |
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334 |
{ |
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335 |
utf8Buffer = utf8Buffer->ReAllocL(utf8.Length() + buf.Length()); |
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CleanupStack::Pop(); // utf8Buffer (old version) |
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CleanupStack::PushL(utf8Buffer); // new version |
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338 |
utf8.Set(utf8Buffer->Des()); |
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339 |
} |
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340 |
// Copy converted characters |
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341 |
utf8.Append(buf); |
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|
342 |
|
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343 |
if( returnValue == KErrNone ) |
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344 |
break; // All of aUnicodeText has been converted and handled |
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345 |
|
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346 |
// Set input descriptor to remaining characters |
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347 |
unicode.Set(unicode.Right(returnValue)); |
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348 |
} |
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349 |
CleanupStack::Pop(utf8Buffer); |
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350 |
return utf8Buffer; // Ownership transfered to caller |
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351 |
} |
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|
352 |
|
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353 |
/** |
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354 |
Converts UTF8 format into UNICODE data. |
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355 |
|
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356 |
@since 6.0 |
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@leave KUriUtilsCannotConvert. When the input data cannot be converted. |
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358 |
@param aString A descriptor with the data to convert. |
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359 |
@return A pointer to a 16-bit descriptor buffer which contains UNICODE data. |
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360 |
*/ |
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361 |
EXPORT_C HBufC* EscapeUtils::ConvertToUnicodeFromUtf8L(const TDesC8& aString) |
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362 |
{ |
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363 |
// Return an empty buffer straight-away |
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364 |
if( aString.Compare(KNullDesC8) == 0 ) |
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365 |
return KNullDesC().AllocL(); |
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|
366 |
|
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367 |
// Convert from Unicode to UTF8 |
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368 |
TPtrC8 utf8 = aString; |
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369 |
TBuf<KEscapeUtilsConversionBufferSize> buf; |
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370 |
HBufC* unicodeBuffer = HBufC::NewLC(utf8.Length()); |
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371 |
TPtr unicode = unicodeBuffer->Des(); |
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|
372 |
|
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373 |
// Loop until all of the filename is converted |
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|
374 |
FOREVER |
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|
375 |
{ |
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376 |
const TInt returnValue = CnvUtfConverter::ConvertToUnicodeFromUtf8(buf, utf8); |
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377 |
if( returnValue == CnvUtfConverter::EErrorIllFormedInput || returnValue < 0) |
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|
378 |
User::Leave(KUriUtilsCannotConvert); |
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|
379 |
|
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|
380 |
// Is escapedFullPath too small? |
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|
381 |
if( unicode.Length() + buf.Length() > unicode.MaxLength() ) |
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|
382 |
{ |
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|
383 |
unicodeBuffer = unicodeBuffer->ReAllocL(unicode.Length() + buf.Length()); |
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|
384 |
CleanupStack::Pop(); // unicodeBuffer (old version) |
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385 |
CleanupStack::PushL(unicodeBuffer); // new version |
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386 |
unicode.Set(unicodeBuffer->Des()); |
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|
387 |
} |
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|
388 |
// Copy converted characters |
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|
389 |
unicode.Append(buf); |
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|
390 |
|
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391 |
if( returnValue==0 ) |
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392 |
break; // All of utf8 has been converted and handled |
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|
393 |
|
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|
394 |
// Set input descriptor to remaining characters |
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395 |
utf8.Set(utf8.Right(returnValue)); |
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|
396 |
} |
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|
397 |
CleanupStack::Pop(unicodeBuffer); |
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|
398 |
return unicodeBuffer; // Ownership transfered to caller |
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|
399 |
} |
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|
400 |
|
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|
401 |
/** |
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Revision: 201002
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|
402 |
Checks to see if the input argument is excluded. |
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|
403 |
|
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Revision: 201002
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|
404 |
@since 6.0 |
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Revision: 201002
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|
405 |
@param aChar The character to be checked. |
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Revision: 201002
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|
406 |
@return A boolean value of ETrue if the character is an excluded one, or |
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|
407 |
EFalse if it is not. |
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Revision: 201002
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|
408 |
*/ |
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Revision: 201002
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|
409 |
EXPORT_C TBool EscapeUtils::IsExcludedChar(TChar aChar) |
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Revision: 201002
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|
410 |
{ |
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Revision: 201002
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|
411 |
const TDesC& KExcludedChars = KExcludedData; |
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|
412 |
TBool excluded = KExcludedChars.Locate(aChar) != KErrNotFound || aChar <= 0x1F || aChar == ' ' || aChar > 0x7E; |
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Revision: 201002
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|
413 |
return excluded; |
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changeset
|
414 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
415 |
|
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
416 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
417 |
Checks for an escape triple at the start of the input descriptor. If there is a triple |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
418 |
its value is calculated and returned through the output argument aHexValue. If there is |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
419 |
no escape triple then this argument is left unchanged. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
420 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
421 |
@since 6.0 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
422 |
@param aData The descriptor to be checked for an escape triple. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
423 |
@param aHexValue The output argument with the value of the escape triple |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
424 |
if it exists. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
425 |
@return A boolean value of ETrue if there is an escape triple at the start of |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
426 |
the input descriptor, EFalse otherwise. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
427 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
428 |
EXPORT_C TBool EscapeUtils::IsEscapeTriple(const TDesC8& aData, TInt& aHexValue) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
429 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
430 |
return CheckAndConvertEscapeTriple(aData, aHexValue); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
431 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
432 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
433 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
434 |
Checks for an escape triple at the start of the input descriptor. If there is a triple |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
435 |
its value is calculated and returned through the output argument aHexValue. If there is |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
436 |
no escape triple then this argument is left unchanged. |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
437 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
438 |
@since 6.0 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
439 |
@param aData The descriptor to be checked for an escape triple. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
440 |
@param aHexValue The output argument with the value of the escape triple |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
441 |
if it exists. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
442 |
@return A boolean value of ETrue if there is an escape triple at the start of |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
443 |
the input descriptor, EFalse otherwise. |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
444 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
445 |
EXPORT_C TBool EscapeUtils::IsEscapeTriple(const TDesC16& aData, TInt& aHexValue) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
446 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
447 |
return CheckAndConvertEscapeTriple(aData, aHexValue); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
448 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
449 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
450 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
451 |
returns the escape encoded descriptor output. This checks the every character of aData |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
452 |
against aCharsToEscape and if it exist then it escape encodes that character. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
453 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
454 |
@param aData The descriptor to be checked against escaping set of characters. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
455 |
@param aCharsToEscape The set of escape characters. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
456 |
@return A pointer to the escape encoded descriptor. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
457 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
458 |
EXPORT_C HBufC8* EscapeUtils::SpecificEscapeEncodeL ( const TDesC8& aData, const TDesC8& aCharsToEscape ) |
e4d67989cc36
Revision: 201002
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parents:
diff
changeset
|
459 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
460 |
// Descriptor to hex digits and excluded chars |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
461 |
const TDesC& KHexChars = KHexDigit; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
462 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
463 |
const TInt length = aData.Length(); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
464 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
465 |
// find out how many characters need escape encoding |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
466 |
TInt count = 0; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
467 |
for( TInt i=0; i<length; ++i ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
468 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
469 |
TChar current( aData[i] ); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
470 |
if ( current <= 0x1F || aCharsToEscape.Locate ( current ) != KErrNotFound || current > 0x7E ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
471 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
472 |
count++; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
473 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
474 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
475 |
if( count == 0) // no encoding needed, just allocate and return the whole string |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
476 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
477 |
return aData.AllocL(); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
478 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
479 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
480 |
// pre-allocate space for the descriptor |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
481 |
HBufC8* buf = HBufC8::NewLC( length + count*2 ); // two extra chars for each escaped |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
482 |
TPtr8 escaped = buf->Des(); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
483 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
484 |
for( TInt i=0; i<length; ++i ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
485 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
486 |
// Check if current character must be escaped |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
487 |
TChar current ( aData[i] ); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
488 |
// Check if current character is excluded ( control characters and the character specified for escaping ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
489 |
TBool excluded = current <= 0x1F || ( aCharsToEscape.Locate ( current ) != KErrNotFound ) || current > 0x7E; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
490 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
491 |
if( excluded ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
492 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
493 |
// Excluded char - escape encode |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
494 |
escaped.Append(KEscapeIndicator); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
495 |
const TInt mostSignificantNibble = (current & 0xf0) >> 4; // Get msNibble by masking against 11110000 and dividing by 16 (>>4) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
496 |
escaped.Append(KHexChars[mostSignificantNibble]); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
497 |
const TInt leastSignificantNibble = (current & 0x0f); // Get lsNibble by masking against 00001111 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
498 |
escaped.Append(KHexChars[leastSignificantNibble]); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
499 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
500 |
else |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
501 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
502 |
// Not an excluded char - just append |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
503 |
escaped.Append(current); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
504 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
505 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
506 |
CleanupStack::Pop(buf); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
507 |
return buf; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
508 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
509 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
510 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
511 |
The Dummy API is used to redirect to SpecificEscapeEncodeL() API in order to preserve BC and is made private |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
512 |
to ensure no-one else starts using it. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
513 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
514 |
EXPORT_C HBufC8* EscapeUtils::DummyForwardingFunctionForCompatibility( const TDesC8& aData, const TDesC8& aCharsToEscape ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
515 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
516 |
return EscapeUtils::SpecificEscapeEncodeL ( aData, aCharsToEscape ); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
517 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
518 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
519 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
520 |
// |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
521 |
// |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
522 |
// Implementation of LOCAL functions |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
523 |
// |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
524 |
// |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
525 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
526 |
Escape encodes the data, converting the reserved characters and excluded characters defined by |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
527 |
RFC2396 as escape triples. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
528 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
529 |
@since 6.0 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
530 |
@warning This function will panic if the output descriptor aEncodedData is |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
531 |
not big enough to append all the data. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
532 |
@param aData A descriptor with the data to encode. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
533 |
@param aReservedChars Reserved characters set. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
534 |
@param aEncodedData The output descriptor pointer where the escaped encoded |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
535 |
data is placed. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
536 |
@return An error code of KUriUtilsErr16BitChar if the data contains a 16-bit |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
537 |
character. KErrNone if the data was successfully encoded. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
538 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
539 |
template<class TDesCType, class TPtrType> |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
540 |
TInt EscapeEncodeData(const TDesCType& aData, const TDesCType& aReservedChars, TPtrType& aEncodedData) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
541 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
542 |
// Descriptor to hex digits and excluded chars |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
543 |
const TDesC& KHexChars = KHexDigit; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
544 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
545 |
const TInt length = aData.Length(); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
546 |
for( TInt i=0; i<length; ++i ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
547 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
548 |
// Check if current character must be escaped, will return error if not 8-bit character |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
549 |
TChar current = aData[i]; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
550 |
if( current > 0xff ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
551 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
552 |
__ASSERT_DEBUG(EFalse, User::Panic(KEscapeUtilsPanicCategory, KUriUtilsErr16BitChar)); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
553 |
return (KUriUtilsErr16BitChar); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
554 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
555 |
// Check if current character is excluded, a control character or a space |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
556 |
TBool excluded = EscapeUtils::IsExcludedChar(current) || aReservedChars.Locate(current) != KErrNotFound; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
557 |
if ( excluded ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
558 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
559 |
// Excluded char - escape encode |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
560 |
aEncodedData.Append(KEscapeIndicator); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
561 |
const TInt mostSignificantNibble = (current & 0xf0) >> 4; // Get msNibble by masking against 11110000 and dividing by 16 (>>4) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
562 |
aEncodedData.Append(KHexChars[mostSignificantNibble]); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
563 |
const TInt leastSignificantNibble = (current & 0x0f); // Get lsNibble by masking against 00001111 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
564 |
aEncodedData.Append(KHexChars[leastSignificantNibble]); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
565 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
566 |
else |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
567 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
568 |
// Not an excluded char or It's already Escape encode - just append |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
569 |
aEncodedData.Append(current); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
570 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
571 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
572 |
return KErrNone; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
573 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
574 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
575 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
576 |
Escape decodes the data, converting escape triples back to their single character value. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
577 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
578 |
@since 6.0 |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
579 |
@warning This function will panic if the output descriptor aDecodedData is not big |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
580 |
enough to append all the data. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
581 |
@param aData A descriptor with the data to decode. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
582 |
@param aDecodedData The output descriptor pointer where the escaped decoded data |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
583 |
is placed. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
584 |
@return An error code of KUriUtilsErr16BitChar if the data contains a 16-bit character. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
585 |
KErrNone if the data was successfully encoded. |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
586 |
*/ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
587 |
template<class TDesCType, class TPtrType> |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
588 |
TInt EscapeDecodeData(const TDesCType& aData, TPtrType& aDecodedData) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
589 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
590 |
// Go through the descriptor |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
591 |
const TInt length = aData.Length(); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
592 |
for( TInt i=0; i<length; ++i ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
593 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
594 |
// See if at start of an escape triple |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
595 |
TChar current = aData[i]; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
596 |
if( current == KEscapeIndicator ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
597 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
598 |
TInt hex; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
599 |
if( !CheckAndConvertEscapeTriple(aData.Mid(i), hex) ) |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
600 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
601 |
// Either of the nibbles were not a valid hex character |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
602 |
return KUriUtilsErrBadEscapeTriple; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
603 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
604 |
// Append hex value |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
605 |
aDecodedData.Append(hex); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
606 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
607 |
// Move index to get next character - add 2 to index |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
608 |
i += 2; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
609 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
610 |
else |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
611 |
{ |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
612 |
// Not an escaped triple - just append |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
613 |
aDecodedData.Append(current); |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
614 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
615 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
616 |
return KErrNone; |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
617 |
} |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
618 |
|
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
619 |
/** |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
620 |
Checks for an escape triple at the start of the input descriptor. If there is a triple its |
e4d67989cc36
Revision: 201002
Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com>
parents:
diff
changeset
|
621 |
value is calculated and returned through the output argument aHexValue. If there is no escape |
e4d67989cc36
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then triple this argument is left unchanged. |
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623 |
|
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@since 6.0 |
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@param aData The descriptor to be checked for an escape triple. |
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626 |
@param aHexValue The output argument with the value of the escape triple |
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if it exists. |
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@return A boolean value of ETrue if there is an escape triple at the start |
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of the input descriptor, EFalse otherwise. |
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*/ |
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template<class TDesCType> |
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TBool CheckAndConvertEscapeTriple(const TDesCType& aData, TInt& aHexValue) |
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633 |
{ |
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// See if the descriptor is actually long enough |
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if( aData.Length() < KEscapeTripleLength ) |
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{ |
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return EFalse; |
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} |
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// Check that the three characters form an escape triple - first char is '%' |
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if( aData[KEscDelimiterPos] != KEscapeIndicator ) |
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641 |
{ |
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return EFalse; |
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} |
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// Descriptor to hex digits and excluded chars |
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const TDesC& KHexChars = KHexDigit; |
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|
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// Check that next two characters are valid |
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TChar mostSignificantNibble = aData[KMostSignificantNibblePos]; |
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TChar leastSignificantNibble = aData[KLeastSignificantNibblePos]; |
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650 |
|
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TInt mostSignificantNibbleValue = KHexChars.LocateF(mostSignificantNibble); |
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TInt leastSignificantNibbleValue = KHexChars.LocateF(leastSignificantNibble); |
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653 |
|
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if( mostSignificantNibbleValue == KErrNotFound || leastSignificantNibbleValue == KErrNotFound ) |
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655 |
{ |
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// Either of the nibbles were not a valid hex character |
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return EFalse; |
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} |
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// Convert characters into hex value and return |
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aHexValue = 0x10*mostSignificantNibbleValue + 0x01*leastSignificantNibbleValue; |
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return ETrue; |
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} |