author | hgs |
Fri, 09 Jul 2010 13:15:39 +0300 | |
changeset 33 | b8a7e07b2677 |
parent 0 | 307788aac0a8 |
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/* |
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* Copyright (c) 2003-2009 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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* Name : SdpUtil.h |
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* Part of : SDP Codec |
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* Interface : - |
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* Version : 1.0 |
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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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#ifndef SDPUTIL_H |
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#define SDPUTIL_H |
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|
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// INCLUDES |
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#include <e32base.h> |
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#include <stringpool.h> |
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#include <e32std.h> |
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#include "_sdpdefs.h" |
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|
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// FORWARD DECLARATIONS |
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class RReadStream; |
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class RWriteStream; |
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class CSdpConnectionField; |
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class CSSdpKeyField; |
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class CSdpOriginField; |
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class TInetAddr; |
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|
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// CLASS DECLARATION |
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/** |
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* Common utilities used in the implementation of the SDP codec. |
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* Utility class, cannot be instantiated |
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*/ |
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class SdpUtil |
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{ |
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public: // New functions |
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/** |
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* Generic method that checks that all aValue's chars are not on illegal charset |
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* |
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* @param aIllegalChars Illegal character set |
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* @param aValue String to be checked |
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* @param aStart Start position of the string |
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* @param aEnd End position of the string |
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* @return Validity of the string |
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*/ |
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static TBool IsValidCharSet( |
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const TDesC8& aIllegalChars, const TDesC8& aValue, TInt aStart, TInt aEnd ); |
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/** |
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* Checks that token list is valid (tokens with space as delimiter) |
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* |
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* @param aValue String containing tokens |
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* @return Validity of the string |
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*/ |
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static TBool IsTokenList( const TDesC8& aValue ); |
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/** |
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* Checks that the token is valid (substring inside string) |
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* |
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* @param aValue String containing the token |
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* @param aStart Start position of the token inside the string |
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* @param aEnd End position of the token inside the string |
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* @return Validity of the token |
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*/ |
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static TBool IsToken( const TDesC8& aValue, TInt aStart, TInt aEnd ); |
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/** |
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* Checks that the token is valid |
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* |
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* @param aValue Token string |
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* @return Validity of the token |
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*/ |
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static TBool IsToken( const TDesC8& aValue ); |
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/** |
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* Checks that the byte string is valid (substring inside string) |
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* |
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* @param aValue String |
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* @param aStart Start position of the byte string inside the string |
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* @param aEnd End position of the byte string inside the string |
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* @return Validity of the byte string |
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*/ |
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static TBool IsByteString( const TDesC8& aValue, TInt aStart, TInt aEnd ); |
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/** |
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* Checks that the byte string is valid |
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* |
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* @param aValue String containing the token |
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* @return Validity of the byte string |
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*/ |
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static TBool IsByteString( const TDesC8& aValue ); |
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|
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/** |
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* Checks that the substring is a token-byte string pair with colon char |
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* as delimiter of the two strings |
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* |
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* @param aValue String containing the pair |
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* @param aStart Start position of the string pair |
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* @param aEnd End position of the string pair |
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* @return Validity of the pair |
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*/ |
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static TBool IsTokenTextPair( |
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const TDesC8& aValue, TInt aStart, TInt aEnd ); |
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123 |
|
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/** |
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* Checks that the string conatins valid token-byte string pair with color |
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* char as delimiter of the two strings |
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* |
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* @param aValue String containing the pair |
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* @return Validity of the byte string |
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*/ |
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static TBool IsTokenTextPair( const TDesC8& aValue ); |
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|
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/** |
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* Checks that the string does not contain any whitespace characters |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static TBool IsNonWhitespace( const TDesC8& aValue ); |
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|
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/** |
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* Checks that the string contains a valid NTP-time element |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static TBool IsValidNtpTime( const TDesC8& aValue ); |
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|
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/** |
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* Divides the buffer into a number of lines. Each line is marked |
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* as a TPtrC8 object and added to array that is returned to the user |
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* NOTE! Each line in the returned array ends in LF character |
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* NOTE! The aLines must end in LF character, not '\0' character |
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* |
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* @param aLines Buffer that contains all the string |
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* @param aErrCode Error code that is used on leave situations, when the |
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* aLines parameter contains invalid string set |
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* @return Array that contains the division of buffer to lines |
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*/ |
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static RArray<TPtrC8> DivideToLinesL( |
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const TDesC8& aLines, TInt aErrCode ); |
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|
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/** |
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* Parses elements from each line. The first item in the returned array |
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* is the field attribute and equal character (e.g. "a=", "c="), following |
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* elements are parsed from the string using space character as delimiter |
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* |
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* @param aLine String containing line that ends to LF character |
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* @param aErrCode Error code that is used on leave situations, when |
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* the contents of aLine are illegal |
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* @return Array that contains the division of string to elements |
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*/ |
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static RArray<TPtrC8> GetElementsFromLineL( |
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const TDesC8& aLine, TInt aErrCode ); |
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|
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/** |
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* Parses elements from each line. The first item in the returned array |
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* is the field attribute and equal character (e.g. "a=", "c="), following |
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* elements are parsed from the string using aDelimiter as delimiter |
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* |
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* @param aLine String containing line that ends to LF character |
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* @param aDelimiter Delimiter character |
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* @param aErrCode Error code that is used on leave situations, when |
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* the contents of aLine are illegal |
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* @return Array that contains the division of string to elements |
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*/ |
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static RArray<TPtrC8> GetElementsFromLineL( |
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const TDesC8& aLine, TChar aDelimiter, TInt aErrCode ); |
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|
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/** |
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* Parses elements from each line. The first item in the returned array |
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* is the field attribute and equal character (e.g. "a=", "c="), following |
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* elements are parsed from the string using space character as delimiter |
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* |
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* @param aLexer Lexer that has been initialized with the string |
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* @param aErrCode Error code that is used on leave situations, when |
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* the contents of aLine are illegal |
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* @return Array that contains the division of string to elements |
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*/ |
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static RArray<TPtrC8> GetElementsFromLineL( |
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TLex8& aLexer, TChar aDelimiter, TInt aErrCode ); |
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|
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/** |
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* Checks if the string contains only POS-DIGIT characters |
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* |
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* @param aDes String |
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* @return Validity of POS-DIGIT string |
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*/ |
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static TBool IsPosDigit( const TDesC8& aDes ); |
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/** |
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* Checks if the string contains only DIGIT characters |
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* |
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* @param aDes String |
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* @return Validity of DIGIT string |
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*/ |
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static TBool IsDigit( const TDesC8& aDes ); |
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/** |
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* Checks if the string contains valid characters |
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* |
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* @param aValidChars Valid characters allowed in the string |
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* @param aDes String |
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* @return Validity of the string |
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*/ |
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static TBool IsValidChars( const TDesC8& aValidChars, const TDesC8& aDes ); |
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|
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/** |
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* Checks if the string contains only token characters |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static TBool IsTokenChar( const TDesC8& aValue ); |
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|
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/** |
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* Checks if the character is a valid token character |
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* |
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* @param aChar Character |
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* @return Validity of the character |
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*/ |
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static TBool IsTokenChar( TChar aChar ); |
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|
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/** |
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* Checks if the string is a valid token. The string can contain slash character, |
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* which divides the line into two tokens. The two tokens are then individually |
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* verified. |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static TBool IsTokenCharWithOptionalSlash( const TDesC8& aValue ); |
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|
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/** |
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* Checks if the string is a valid token. The string can contain space characters, |
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* which divides the string into a number of tokens. Each token is then individually |
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* verified. |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static TBool IsTokenCharWithSpacesL( const TDesC8& aValue ); |
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|
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/** |
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* Checks if the string is a valid token. The string can contain slash character, |
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* which divides the line into two tokens. The two tokens are then individually |
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* verified. |
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* |
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* @param aValue String |
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* @return Validity of the string |
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*/ |
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static void EncodeBufferL( |
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const TDesC8& aValue, TInt aIndex, RWriteStream& aStream ); |
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|
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/** |
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* Sets default network type ("IN") and default address type ("IP4" or "IP6") |
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* to variables given as parameters |
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* |
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* @param aPool String pool |
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* @param aInetAddr Internet address |
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* @param aNetType Network type |
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* @param aAddressType Address type |
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*/ |
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static void SetDefaultNetTypeAndAddrType( |
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RStringPool aPool, const TInetAddr& aAddress, |
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RStringF& aNetType, RStringF& aAddressType ); |
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|
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/** |
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* Skips spaces until next line break, if the line break can be found. |
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* @param aLexer |
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* @return ETrue if the line break was found, otherwise EFalse. |
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*/ |
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static TBool SkipSpacesUntilNextLineBreak( TLex8& aLexer ); |
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|
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private: |
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|
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/** |
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* After the field tag has been parsed out, all the field elements are |
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* parsed in this method |
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* |
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* @param aArray Reference to the array that contains the chopped elements |
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* @param aLexer Used lexer |
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* @param aDelimiter Delimiter character that determines the separation of elements |
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* @param aErrCode The error code that is used on leaves, when the argument is invalid |
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*/ |
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static void ChopElementsFromLineL( |
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RArray<TPtrC8>& aArray, TLex8& aLexer, TChar aDelimiter, TInt aErrCode ); |
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|
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/** |
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* Private constructor |
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* This class can never be instantiated |
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*/ |
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SdpUtil(); |
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}; |
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#endif |