genericservices/httputils/DelimitedParser/CDelimitedQuery.cpp
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     1 // Copyright (c) 2001-2009 Nokia Corporation and/or its subsidiary(-ies).
       
     2 // All rights reserved.
       
     3 // This component and the accompanying materials are made available
       
     4 // under the terms of "Eclipse Public License v1.0"
       
     5 // which accompanies this distribution, and is available
       
     6 // at the URL "http://www.eclipse.org/legal/epl-v10.html".
       
     7 //
       
     8 // Initial Contributors:
       
     9 // Nokia Corporation - initial contribution.
       
    10 //
       
    11 // Contributors:
       
    12 //
       
    13 // Description:
       
    14 //
       
    15 
       
    16 #include <delimitedquery8.h>
       
    17 #include <delimitedquery16.h>
       
    18 #include <escapeutils.h>
       
    19 
       
    20 //
       
    21 //
       
    22 // Implemetation of CDelimitedQuery8
       
    23 //
       
    24 //
       
    25 
       
    26 /**
       
    27 	Static factory constructor. Uses two phase construction and leaves nothing on 
       
    28 	the CleanupStack.
       
    29 	
       
    30 	@since			6.0
       
    31 	@param			aQuery	A descriptor with the initial query.
       
    32 	@return			A pointer to created object.
       
    33 	@post			Nothing left on the CleanupStack.
       
    34  */
       
    35 EXPORT_C CDelimitedQuery8* CDelimitedQuery8::NewL(const TDesC8& aQuery)
       
    36 	{
       
    37 	CDelimitedQuery8* self = NewLC(aQuery);
       
    38 	CleanupStack::Pop(self);
       
    39 	return self;
       
    40 	}
       
    41 
       
    42 /**
       
    43 	Static factory constructor. Uses two phase construction and leaves a pointer to 
       
    44 	created object on the CleanupStack.
       
    45 	
       
    46 	@since			6.0
       
    47 	@param			aQuery	A descriptor with the initial query.
       
    48 	@return			A pointer to created object.
       
    49 	@post			Pointer to created object left of CleanupStack.
       
    50  */
       
    51 EXPORT_C CDelimitedQuery8* CDelimitedQuery8::NewLC(const TDesC8& aQuery)
       
    52 	{
       
    53 	CDelimitedQuery8* self = new (ELeave) CDelimitedQuery8;
       
    54 	CleanupStack::PushL(self);
       
    55 	self->ConstructL(aQuery);
       
    56 	return self;
       
    57 	}
       
    58 
       
    59 /**
       
    60 	Destructor.
       
    61 	
       
    62 	@since			6.0
       
    63  */
       
    64 EXPORT_C CDelimitedQuery8::~CDelimitedQuery8()
       
    65 	{
       
    66 	}
       
    67 
       
    68 /**
       
    69 	Escape encodes segment then inserts the escaped version in a position before the 
       
    70 	current parsed segment. The new segment should only contain a single query segment, 
       
    71 	as any query delimiters in the segment will be converted to an escape triple. The 
       
    72 	parser is left in a state where its current segment is the same one as before the 
       
    73 	insertion.
       
    74 	
       
    75 	@since			6.0
       
    76 	@param			aSegment	A descriptor with the unescaped query segment.
       
    77 	@pre 			The query must have been initially parsed.
       
    78 	@post			The query will have been extended to include the new segment. The 
       
    79 	current segment will remain as the one before the insertion.
       
    80  */
       
    81 EXPORT_C void CDelimitedQuery8::InsertAndEscapeCurrentL(const TDesC8& aSegment)
       
    82 	{
       
    83 	// Create escaped version of the segment
       
    84 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(aSegment, EscapeUtils::EEscapeQuery);
       
    85 	CleanupStack::PushL(escaped);
       
    86 
       
    87 	// Insert the segment
       
    88 	InsertCurrentL(*escaped);
       
    89 
       
    90 	// Cleanup
       
    91 	CleanupStack::PopAndDestroy(escaped);
       
    92 	}
       
    93 
       
    94 /**
       
    95 	Escape encodes segment then inserts the escaped version at the back of the query. 
       
    96 	The new segment should only contain a single query segment, as any query delimiters 
       
    97 	in the segment will be converted to an escape triple. The parser is left in a state 
       
    98 	where its current segment is the same one as before the insertion.
       
    99 	
       
   100 	@warning		A re-parse is required to ensure that the parser is valid.
       
   101 	@since			6.0
       
   102 	@param			aSegment	A descriptor with the unescaped query segment.
       
   103 	@pre 			The delimiter must have been set. 
       
   104 	@post			The query will have been extended to include the new segment.
       
   105  */
       
   106 EXPORT_C void CDelimitedQuery8::PushAndEscapeBackL(const TDesC8& aSegment)
       
   107 	{
       
   108 	// Create escaped version of the segment
       
   109 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(aSegment, EscapeUtils::EEscapeQuery);
       
   110 	CleanupStack::PushL(escaped);
       
   111 
       
   112 	// Insert the segment
       
   113 	PushBackL(*escaped);
       
   114 
       
   115 	// Cleanup
       
   116 	CleanupStack::PopAndDestroy(escaped);
       
   117 	}
       
   118 
       
   119 /**
       
   120 	Escape encodes segment then inserts the escaped version at the front of the query. 
       
   121 	The new segment should only contain a single query segment, as any query delimiters 
       
   122 	in the segment will be converted to an escape triple. The parser is left in a state 
       
   123 	where its current segment is the same one as before the insertion.
       
   124 	
       
   125 	@warning		A re-parse is required to ensure that the parser is valid.
       
   126 	@since			6.0
       
   127 	@param			aSegment	A descriptor with the unescaped query segment.
       
   128 	@pre 			The delimiter must have been set. 
       
   129 	@post			The query will have been extended to include the new segment.
       
   130  */
       
   131 EXPORT_C void CDelimitedQuery8::PushAndEscapeFrontL(const TDesC8& aSegment)
       
   132 	{
       
   133 	// Create escaped version of the segment
       
   134 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(aSegment, EscapeUtils::EEscapeQuery);
       
   135 	CleanupStack::PushL(escaped);
       
   136 
       
   137 	// Insert the segment
       
   138 	PushFrontL(*escaped);
       
   139 
       
   140 	// Cleanup
       
   141 	CleanupStack::PopAndDestroy(escaped);
       
   142 	}
       
   143 
       
   144 /**
       
   145 	Constructor. First phase of two-phase construction method. Does non-allocating 
       
   146 	construction.
       
   147 	
       
   148 	@since			6.0
       
   149  */
       
   150 CDelimitedQuery8::CDelimitedQuery8()
       
   151 : CDelimitedDataBase8()
       
   152 	{
       
   153 	}
       
   154 
       
   155 /**
       
   156 	Second phase of two-phase construction method. Does any allocations required to fully 
       
   157 	construct the object.
       
   158 	
       
   159 	@since			6.0
       
   160 	@param			aQuery	A descriptor with the initial query.
       
   161 	@pre 			First phase of construction is complete.
       
   162 	@post			The object is fully constructed.
       
   163  */
       
   164 void CDelimitedQuery8::ConstructL(const TDesC8& aQuery)
       
   165 	{
       
   166 	// Call base class ConstructL()
       
   167 	CDelimitedDataBase8::ConstructL(aQuery);
       
   168 
       
   169 	// Set the delimiter to '&'
       
   170 	SetDelimiter(TChar('&'));
       
   171 	}
       
   172 
       
   173 //
       
   174 //
       
   175 // Implemetation of CDelimitedQuery16
       
   176 //
       
   177 //
       
   178 
       
   179 /**
       
   180 	Static factory constructor. Uses two phase construction and leaves nothing on the 
       
   181 	CleanupStack.
       
   182 						
       
   183 	@since			6.0
       
   184 	@param			aQuery	A descriptor with the initial query.
       
   185 	@return			A pointer to created object.
       
   186 	@post			Nothing left on the CleanupStack.
       
   187  */
       
   188 EXPORT_C CDelimitedQuery16* CDelimitedQuery16::NewL(const TDesC16& aQuery)
       
   189 	{
       
   190 	CDelimitedQuery16* self = NewLC(aQuery);
       
   191 	CleanupStack::Pop(self);
       
   192 	return self;
       
   193 	}
       
   194 
       
   195 
       
   196 /**
       
   197 	Static factory constructor. Uses two phase construction and leaves a pointer to created object on the CleanupStack.
       
   198 						
       
   199 	@since			6.0
       
   200 	@param			aQuery	A descriptor with the initial query.
       
   201 	@return			A pointer to created object.
       
   202 	@post			Pointer to created object left of CleanupStack.
       
   203  */
       
   204 EXPORT_C CDelimitedQuery16* CDelimitedQuery16::NewLC(const TDesC16& aQuery)
       
   205 	{
       
   206 	CDelimitedQuery16* self = new (ELeave) CDelimitedQuery16;
       
   207 	CleanupStack::PushL(self);
       
   208 	self->ConstructL(aQuery);
       
   209 	return self;
       
   210 	}
       
   211 
       
   212 /**
       
   213 	Destructor.
       
   214 	
       
   215 	@since			6.0
       
   216  */
       
   217 EXPORT_C CDelimitedQuery16::~CDelimitedQuery16()
       
   218 	{
       
   219 	}
       
   220 	
       
   221 /**
       
   222 	Escape encodes segment then inserts the escaped version in a position before the 
       
   223 	current parsed segment. The new segment should only contain a single query segment, 
       
   224 	as any query delimiters in the segment will be converted to an escape triple. The 
       
   225 	parser is left in a state where its current segment is the same one as before the 
       
   226 	insertion.
       
   227 						
       
   228 	@since			6.0
       
   229 	@param			aSegment	A descriptor with the unescaped query segment.
       
   230 	@pre 			The query must have been initially parsed.
       
   231 	@post			The query will have been extended to include the new segment. The 
       
   232 	current segment will remain as the one before the insertion.
       
   233  */
       
   234 EXPORT_C void CDelimitedQuery16::InsertAndEscapeCurrentL(const TDesC16& aSegment)
       
   235 	{
       
   236 	// Need to convert to utf8 first
       
   237 	HBufC8* utf8 = EscapeUtils::ConvertFromUnicodeToUtf8L(aSegment);
       
   238 	CleanupStack::PushL(utf8);
       
   239 
       
   240 	// Create escaped version of component
       
   241 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(*utf8, EscapeUtils::EEscapePath);
       
   242 	CleanupStack::PushL(escaped);
       
   243 
       
   244 	// Convert back to 16-bits
       
   245 	HBufC16* converted = HBufC16::NewLC(escaped->Length());
       
   246 	converted->Des().Copy(*escaped);
       
   247 
       
   248 	// Insert the segment
       
   249 	InsertCurrentL(*converted);
       
   250 
       
   251 	// Cleanup
       
   252 	CleanupStack::PopAndDestroy(3, utf8);	// utf8, escaped, converted
       
   253 	}
       
   254 
       
   255 /**
       
   256 	Escape encodes segment then inserts the escaped version at the back of the query. 
       
   257 	The new segment should only contain a single query segment, as any query delimiters 
       
   258 	in the segment will be converted to an escape triple. The parser is left in a state 
       
   259 	where its current segment is the same one as before the insertion.
       
   260 						
       
   261 	@warning		A re-parse is required to ensure that the parser is valid.
       
   262 	@since			6.0
       
   263 	@param			aSegment	A descriptor with the unescaped query segment.
       
   264 	@pre 			The delimiter must have been set. 
       
   265 	@post			The query will have been extended to include the new segment.
       
   266 */
       
   267 EXPORT_C void CDelimitedQuery16::PushAndEscapeBackL(const TDesC16& aSegment)
       
   268 	{
       
   269 	// Need to convert to utf8 first
       
   270 	HBufC8* utf8 = EscapeUtils::ConvertFromUnicodeToUtf8L(aSegment);
       
   271 	CleanupStack::PushL(utf8);
       
   272 
       
   273 	// Create escaped version of component
       
   274 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(*utf8, EscapeUtils::EEscapePath);
       
   275 	CleanupStack::PushL(escaped);
       
   276 
       
   277 	// Convert back to 16-bits
       
   278 	HBufC16* converted = HBufC16::NewLC(escaped->Length());
       
   279 	converted->Des().Copy(*escaped);
       
   280 
       
   281 	// Insert the segment
       
   282 	PushBackL(*converted);
       
   283 
       
   284 	// Cleanup
       
   285 	CleanupStack::PopAndDestroy(3, utf8);	// utf8, escaped, converted
       
   286 	}
       
   287 
       
   288 /**
       
   289 	Escape encodes segment then inserts the escaped version at the front of the query. 
       
   290 	The new segment should only contain a single query segment, as any query delimiters 
       
   291 	in the segment will be converted to an escape triple. The parser is left in a state 
       
   292 	where its current segment is the same one as before the insertion.
       
   293 						
       
   294 	@warning		A re-parse is required to ensure that the parser is valid.
       
   295 	@since			6.0
       
   296 	@param			aSegment	A descriptor with the unescaped query segment.
       
   297 	@pre 			The delimiter must have been set. 
       
   298 	@post			The query will have been extended to include the new segment.
       
   299  */
       
   300 EXPORT_C void CDelimitedQuery16::PushAndEscapeFrontL(const TDesC16& aSegment)
       
   301 	{
       
   302 	// Need to convert to utf8 first
       
   303 	HBufC8* utf8 = EscapeUtils::ConvertFromUnicodeToUtf8L(aSegment);
       
   304 	CleanupStack::PushL(utf8);
       
   305 
       
   306 	// Create escaped version of component
       
   307 	HBufC8* escaped = EscapeUtils::EscapeEncodeL(*utf8, EscapeUtils::EEscapePath);
       
   308 	CleanupStack::PushL(escaped);
       
   309 
       
   310 	// Convert back to 16-bits
       
   311 	HBufC16* converted = HBufC16::NewLC(escaped->Length());
       
   312 	converted->Des().Copy(*escaped);
       
   313 
       
   314 	// Insert the segment
       
   315 	PushFrontL(*converted);
       
   316 
       
   317 	// Cleanup
       
   318 	CleanupStack::PopAndDestroy(3, utf8);	// utf8, escaped, converted
       
   319 	}
       
   320 
       
   321 /**
       
   322 	Constructor. First phase of two-phase construction method. Does non-allocating construction.
       
   323 						
       
   324 	@since			6.0
       
   325  */
       
   326 CDelimitedQuery16::CDelimitedQuery16()
       
   327 : CDelimitedDataBase16()
       
   328 	{
       
   329 	}
       
   330 
       
   331 /**
       
   332 	Second phase of two-phase construction method. Does any allocations required to fully 
       
   333 	construct the object.
       
   334 						
       
   335 	@since			6.0
       
   336 	@param			aQuery	A descriptor with the initial query.
       
   337 	@pre 			First phase of construction is complete.
       
   338 	@post			The object is fully constructed.
       
   339  */
       
   340 void CDelimitedQuery16::ConstructL(const TDesC16& aQuery)
       
   341 	{
       
   342 	// Call base class ConstructL()
       
   343 	CDelimitedDataBase16::ConstructL(aQuery);
       
   344 
       
   345 	// Set the delimiter to '&'
       
   346 	SetDelimiter(TChar('&'));
       
   347 	}
       
   348