FCL/sf/os/ossrv: comparison lowlevellibsandfws/genericusabilitylib/src/lstring16.cpp

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+:e4d67989cc36
+// Copyright (c) 2008-2009 Nokia Corporation and/or its subsidiary(-ies).
+// All rights reserved.
+// This component and the accompanying materials are made available
+// under the terms of "Eclipse Public License v1.0"
+// which accompanies this distribution, and is available
+// at the URL "http://www.eclipse.org/legal/epl-v10.html".
+//
+// Initial Contributors:
+// Nokia Corporation - initial contribution.
+//
+// Contributors:
+//
+// Description:
+//
+#include <e32base.h>
+#include <estring.h>
+const TUint KDefaultExpandSize = 16;
+/**
+Aligns the supplied capacity to the nearest growth factor
+For performance reasons the growth factor, KDefaultExpandSizeShift,
+is expressed as an exponent of 2 so shifting can be used to achieve the
+alignment.
+a KDefaultExpandSizeShift value of 4 is equivalent to 16;
+giving newCapacity = ((newCapacity / 16) + 1) * 16
+@param aNewCapacity The size to be aligned
+@return The new, aligned capacity
+*/
+static inline TInt AlignCapacity(TInt aNewCapacity)
+	{
+	const TUint KDefaultExpandSizeShift = 4;
+	return (TInt)((((TUint)aNewCapacity >> KDefaultExpandSizeShift) + 1) << KDefaultExpandSizeShift);
+	}
+/**
+Guarantees that MaxLength() is greater than or equal to the supplied
+capacity, reallocating the supplied capacity if necessary.
+The actual value of MaxLength() after a call may differ from the exact
+value requested, but if it does differ it will always be greater. This
+flexibility allows the implementation to manage heap buffers more
+efficiently.
+The string descriptor's heap buffer may be reallocated in order to
+accommodate the new size. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aMinRequiredCapacity The minimum value of MaxLength() required
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+void LString16::ReserveL(TInt aMinRequiredCapacity)
+	{
+	if (MaxLength() < aMinRequiredCapacity)
+		{
+		ReAllocL(AlignCapacity(aMinRequiredCapacity));
+		}
+	}
+/**
+Guarantees that MaxLength() is greater than or equal to the supplied
+integer parameter, growing the underlying heap buffer if necessary.
+The growth is exponential; maxLength *= 1.5
+This is reported to give an amortised complexity of O(n) when adding
+n characters.
+If the required capacity is larger than the expanded size then the
+required capacity is used instead.
+The actual value of MaxLength() after a call may differ from the exact
+value requested, but if it does differ it will always be greater. This
+flexibility allows the implementation to manage heap buffers more
+efficiently.
+@param aRequiredCapacity The minimum value of MaxLength() required
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+void LString16::ReserveCapacityGrowExponentialL(TInt aRequiredCapacity)
+	{
+	//work in unsigned int for the appropriate shift operation
+	TUint max_length = MaxLength();
+	TUint requiredCapacity = aRequiredCapacity;
+	if (max_length < requiredCapacity)
+		{
+		// max_length *= 3/2;
+		max_length = (max_length + (max_length << 1)) >> 1;
+		// take the bigger of the extended buffer or the required capactiy
+		ReAllocL(AlignCapacity((TInt)(max_length > requiredCapacity ? max_length : requiredCapacity)));
+		}
+	}
+/**
+Guarantees that free space in the buffer greater than or equal the
+supplied integer parameter, growing the underlying heap buffer
+if necessary.
+@param aRequiredEmptySpace The minimum value of free space required
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+void LString16::ReserveFreeCapacityGrowExponentialL(TInt aRequiredEmptySpace)
+	{
+	ReserveCapacityGrowExponentialL(Length() + aRequiredEmptySpace);
+	}
+/**
+Grows the underlying buffer using the exponential growth
+function. Guarantees that MaxLength() is greater than or
+equal to 1.5 * the current MaxLength.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+void LString16::ReserveCapacityGrowExponentialL()
+	{
+	ReserveCapacityGrowExponentialL(MaxLength() + 1);
+	}
+/**
+Default constructor.
+Constructs a zero-length 16-bit resizable string descriptor.
+Note that the resulting object owns no allocated memory yet. This
+default constructor never leaves.
+*/
+EXPORT_C LString16::LString16()
+	: iReserved(0)
+	{
+	}
+/**
+Destructor.
+Frees any heap-allocated resources owned by this string descriptor. It
+is safe to rely on this destructor to perform all necessary cleanup;
+it is not necessary use the cleanup stack or to call Close() manually.
+@see RBuf16::Close
+*/
+EXPORT_C LString16::~LString16()
+	{
+	RBuf16::Close();
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor with an
+initial capacity.
+The function allocates sufficient memory to contain descriptor data up to
+the specified initial maximum length.
+The current length of the descriptor is set to zero. The maximum length of
+the descriptor is set to the specified value.
+@param aMaxLength  The maximum length of the descriptor.
+@leave KErrNoMemory If there is insufficient memory.
+@see RBuf16::CreateL
+*/
+EXPORT_C LString16::LString16(TInt aMaxLength)
+	: iReserved(0)
+	{
+	RBuf16::CreateL(aMaxLength);
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor from a
+pre-allocated heap descriptor.
+Transfers ownership of the specified heap descriptor to this object.
+@param aHBuf  The heap descriptor to be transferred to this object.
+This pointer can be NULL, which means that a zero length
+16-bit resizable string descriptor is created.
+@see RBuf16::RBuf16(HBufC16*)
+*/
+EXPORT_C LString16::LString16(HBufC16* aHBuf)
+	: iReserved(0)
+	{
+	if (aHBuf)
+		RBuf16::Assign (aHBuf);
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor from a
+pre-allocated raw heap buffer.
+The allocated memory forms the buffer for this string descriptor. The
+current length of the descriptor is set to zero.
+@param aHeapCell  The allocated memory to be assigned to this object. This
+pointer can be NULL, which means that a zero length 16-bit
+resizable buffer descriptor is created.
+@param aMaxLength The maximum length of the constructed string descriptor.
+@panic USER 8 If the specified maximum length is greater then the size of
+the allocated heap cell, or the specified maximum length
+is NOT zero when the pointer to the heap cell is NULL.
+@see RBuf16::Assign()
+*/
+EXPORT_C LString16::LString16(TUint16* aHeapCell,TInt aMaxLength)
+	: iReserved(0)
+	{
+	RBuf16::Assign(aHeapCell, aMaxLength);
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor from a
+pre-allocated raw heap buffer.
+The allocated memory forms the buffer for this string descriptor. The
+current length of the descriptor is set to the value of the second
+parameter.
+@param aHeapCell  The allocated memory to be assigned to this object.
+@param aLength	  The length of the resulting string descriptor.
+@param aMaxLength The maximum length of the resulting string descriptor.
+@panic USER 8 If the specified maximum length is greater then the size of
+the allocated heap cell, or the specified length is greater then
+the specified	maximum length, or the specified maximum length
+is NOT zero when the pointer to the heap cell is NULL.
+@see RBuf16::Assign()
+*/
+EXPORT_C LString16::LString16(TUint16* aHeapCell,TInt aLength,TInt aMaxLength)
+	: iReserved(0)
+	{
+	RBuf16::Assign(aHeapCell, aLength, aMaxLength);
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor to contain
+a copy of the specified (source) descriptor, or leave on failure.
+The constructor allocates sufficient memory so that this string
+descriptor's maximum length is the same as the length of the source
+descriptor. Both the current length and the maximum length of this
+string descriptor are set to the length of the source descriptor.
+The data contained in the source descriptor is copied into this string
+descriptor.
+@param aDes Source descriptor to be copied into this object.
+@leave KErrNoMemory If there is insufficient memory.
+@see RBuf16::CreateL()
+*/
+EXPORT_C LString16::LString16(const TDesC16& aDes)
+	: iReserved(0)
+	{
+	RBuf16::CreateL(aDes);
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This operation may cause the target string descriptor's heap buffer to
+be reallocated in order to accommodate the new data. As a result,
+MaxLength() and Ptr() may return different values afterwards, and any
+existing raw pointers to into the descriptor data may be invalidated.
+Note that the automatic resizing performed is a change to the
+functionality of this operation compared to other descriptor
+classes. This change is only active on objects directly declared
+LString16; when LString16 instances are instead manipulated via
+references to TDes16 or TDesC16, the standard (non-resizing, panicing)
+variant is invoked.
+@param aDes A 16-bit non-modifiable descriptor.
+@return A reference to this 16-bit string descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::CopyL
+*/
+EXPORT_C LString16& LString16::operator=(const TDesC16& aDes)
+	{
+	CopyL(aDes);
+	return *this;
+	}
+/**
+Transfers ownership of the specified 16-bit resizable descriptor's this object.
+@param aBuf The source 16-bit resizable buffer. The ownership of this
+object's buffer is to be transferred.
+@return A reference to this 16-bit string descriptor.
+@see Assign()
+*/
+EXPORT_C LString16& LString16::operator=(HBufC16* aBuf)
+	{
+	Assign(aBuf);
+	return *this;
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non-modifiable descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::operator=
+@see TDes16::Copy
+*/
+EXPORT_C void LString16::CopyL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::Copy(aDes);
+	}
+/**
+Copy constructor to create a 16-bit resizable string descriptor to
+contain a copy of the specified (source) string descriptor's data, or
+leave on failure.
+The constructor allocates sufficient memory so that this string
+descriptor's maximum length is the same as the length of the source
+string descriptor. Both the current length and the maximum length of
+this string descriptor are set to the length of the source descriptor.
+The data contained in the source string descriptor is copied into this
+string descriptor.
+@param aDes Source string descriptor to be copied into this object.
+@leave KErrNoMemory If there is insufficient memory.
+@see RBuf16::CreateL()
+*/
+EXPORT_C LString16::LString16(const LString16& aDes)
+	: iReserved(0)
+	{
+	RBuf16::CreateL(aDes);
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This operation may cause the target string descriptor's heap buffer to
+be reallocated in order to accommodate the new data. As a result,
+MaxLength() and Ptr() may return different values afterwards, and any
+existing raw pointers to into the descriptor data may be invalidated.
+Note that the automatic resizing performed is a change to the
+functionality of this operation compared to other descriptor
+classes. This change is only active on objects directly declared
+LString16; when LString16 instances are instead manipulated via
+references to TDes16 or TDesC16, the standard (non-resizing, panicing)
+variant is invoked.
+@param aDes A 16-bit string descriptor.
+@return A reference to this 16-bit string descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::CopyL
+*/
+EXPORT_C LString16& LString16::operator=(const LString16& aDes)
+	{
+	CopyL(aDes);
+	return *this;
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor containing
+a copy of the specified (source) zero-terminated string data, or leave
+on failure.
+The constructor allocates sufficient memory so that this string
+descriptor's maximum length is the same as the length of the source
+string. Both the current length and the maximum length of this string
+descriptor are set to the length of the source string.
+The data contained in the source string is copied into this string
+descriptor. The zero terminator is not copied.
+@param aZeroTerminatedString A pointer to a zero-terminated string
+@leave KErrNoMemory If there is insufficient memory.
+@see LString16::CopyL
+*/
+EXPORT_C LString16::LString16(const TUint16* aZeroTerminatedString)
+	: iReserved(0)
+	{
+	CopyL(aZeroTerminatedString);
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This operation may cause the target string descriptor's heap buffer to
+be reallocated in order to accommodate the new data. As a result,
+MaxLength() and Ptr() may return different values afterwards, and any
+existing raw pointers to into the descriptor data may be invalidated.
+Note that the automatic resizing performed is a change to the
+functionality of this operation compared to other descriptor
+classes. This change is only active on objects directly declared
+LString16; when LString16 instances are instead manipulated via
+references to TDes16 or TDesC16, the standard (non-resizing, panicing)
+variant is invoked.
+@param aZeroTerminatedString A pointer to a zero-terminated string
+@return A reference to this 16-bit string descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::CopyL
+*/
+EXPORT_C LString16& LString16::operator=(const TUint16* aZeroTerminatedString)
+	{
+	CopyL(aZeroTerminatedString);
+	return *this;
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString A pointer to a zero-terminated string
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::operator=
+@see TDes16::Copy
+*/
+EXPORT_C void LString16::CopyL(const TUint16* aZeroTerminatedString)
+	{
+	ReserveL(User::StringLength(aZeroTerminatedString));
+	RBuf16::Copy(aZeroTerminatedString);
+	}
+/**
+Copies 8-bit descriptor data into this 16-bit string descriptor,
+replacing any existing data, and expanding its heap buffer to
+accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+Each 8-bit character value is widened to a 16-bit character value as
+part of the copying process.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes An 8 bit non modifiable descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::operator=
+@see TDes16::Copy
+*/
+EXPORT_C void LString16::CopyL(const TDesC8& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::Copy(aDes);
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set according to the second
+parameter.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aBuf    The start address of data to be copied.
+@param aLength The length of data to be copied.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@panic USER 11  if aLength is negative.
+@see TDes16::Copy
+*/
+EXPORT_C void LString16::CopyL(const TUint16* aBuf,TInt aLength)
+	{
+	ReserveL(aLength);
+	RBuf16::Copy(aBuf, aLength);
+	}
+/**
+Sets the length of the data represented by the string descriptor to
+the specified value.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aLength The new length of the descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11 if aLength is negative
+*/
+EXPORT_C void LString16::SetLengthL(TInt aLength)
+	{
+	ReserveL(aLength);
+	RBuf16::SetLength(aLength);
+	}
+/**
+Sets the storage space allocated to this descriptor to the specified
+value by growing or compressing its buffer size.
+If the current length of the descriptor is greater than the specified
+max length, length is truncated to max length.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aMaxLength The new maximum length of the descriptor.
+@leave KErrNoMemory if the the buffer needs to be
+reallocated and there are insufficient resources to do so
+@panic USER 11 if aLength is negative
+*/
+EXPORT_C void LString16::SetMaxLengthL(TInt aMaxLength)
+	{
+	if (MaxLength() == aMaxLength)
+		{
+		return;
+		}
+	if (Length() > aMaxLength)
+		{
+		// truncate the current length
+		RBuf16::SetLength(aMaxLength);
+		}
+	ReAllocL(aMaxLength);
+	}
+/**
+Ensures that the remaining unused space is more than the supplied value.
+May reallocate a larger storage space to meet the requirement.
+As a result MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+Typically, you use this method to reserve a known amount of required space
+in one go instead of relying on the automatic growth pattern.
+@param aExtraSpaceLength The extra space required.
+@leave KErrNoMemory if the the buffer needs to be
+reallocated and there are insufficient resources to do so.
+@panic USER 11 if aLength is negative
+*/
+EXPORT_C void LString16::ReserveFreeCapacityL(TInt aExtraSpaceLength)
+	{
+	ReserveL(Length() + aExtraSpaceLength);
+	}
+/**
+Re-initialises the descriptor destroying its payload
+*/
+EXPORT_C void LString16::Reset()
+	{
+	RBuf16::Close();
+	}
+/**
+Re-allocates a smaller descriptor buffer space to the current
+descriptor length
+This may cause the string descriptor's heap buffer to be reallocated
+in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+If there is insufficient memory to re-allocate the buffer then the
+descriptor left unchanged
+*/
+EXPORT_C void LString16::Compress()
+	{
+	TInt length = Length();
+	if (MaxLength() > length)
+		{
+		ReAlloc(length);
+		}
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aChar A single character to be appended. The length of the descriptor
+is incremented by one.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see LString16::operator+=
+*/
+EXPORT_C void LString16::AppendL(TChar aChar)
+	{
+	ReserveFreeCapacityGrowExponentialL(1);
+	RBuf16::Append(aChar);
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aChar A single character to be appended. The length of the descriptor
+is incremented by one.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see LString16::AppendL
+*/
+EXPORT_C LString16& LString16::operator+=(TChar aChar)
+	{
+	AppendL(aChar);
+	return *this;
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non modifiable descriptor whose data is to be appended.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendL(const TDesC16& aDes)
+	{
+	ReserveFreeCapacityGrowExponentialL(aDes.Length());
+	RBuf16::Append(aDes);
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non modifiable descriptor whose data is to be appended.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see LString16::AppendL
+*/
+EXPORT_C LString16& LString16::operator+=(const TDesC16& aDes)
+	{
+	AppendL(aDes);
+	return *this;
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aBuf    A pointer to the data to be copied.
+@param aLength The length of data to be copied.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendL(const TUint16* aBuf,TInt aLength)
+	{
+	ReserveFreeCapacityGrowExponentialL(aLength);
+	RBuf16::Append(aBuf, aLength);
+	}
+/**
+Fills the descriptor's data area with the specified character, replacing any
+existing data.
+The descriptor is filled with the specified number of characters,
+and its length is changed to reflect this.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aChar   The fill character.
+@param aLength The new length of the descriptor and the number of fill characters
+to be copied into it.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aLength is negative
+*/
+EXPORT_C void LString16::FillL(TChar aChar,TInt aLength)
+	{
+	ReserveL(aLength);
+	RBuf16::Fill(aChar, aLength);
+	}
+/**
+Fills the descriptor's data area with binary zeroes, i.e. 0x0000, replacing any
+existing data, and changes its length.
+The descriptor is filled with the specified number of binary zeroes.
+The descriptor's length is changed to reflect this.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aLength The new length of the descriptor and the number of binary zeroes
+to be copied into it.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aLength is negative
+*/
+EXPORT_C void LString16::FillZL(TInt aLength)
+	{
+	ReserveL(aLength);
+	RBuf16::FillZ(aLength);
+	}
+/**
+Converts the specified unsigned integer into a fixed width character
+representation based on the specified number system and copies the conversion
+into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The function generates the exact number of specified characters, either padding
+to the left with character zeroes or discarding low order characters as necessary.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+lower case.
+This function is equivalent to using Format() with parameters which specify:
+1. a fixed length target field
+2. padding with zero characters, for example "%08x".
+When this is the case, always use NumFixedWidth() in preference
+to Format() as it is more efficient.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The unsigned integer value.
+@param aRadix The number system representation for the unsigned integer.
+@param aWidth The number of characters: to be used to contain the conversion,
+to be copied into this descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::NumFixedWidthL(TUint aVal,TRadix aRadix,TInt aWidth)
+	{
+	Zero();
+	AppendNumFixedWidthL(aVal, aRadix, aWidth);
+	}
+/**
+Converts the specified unsigned integer into a fixed width character
+representation based on the specified number system and appends the conversion
+onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+The function generates the exact number of specified characters, either padding
+to the left with character zeroes or discarding low order characters as
+necessary.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+lower case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The unsigned integer value.
+@param aRadix The number system representation for the unsigned integer.
+@param aWidth The number of characters to be used to contain the conversion,
+and to be appended to this descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendNumFixedWidthL(TUint aVal,TRadix aRadix,TInt aWidth)
+	{
+	ReserveFreeCapacityGrowExponentialL(aWidth);
+	RBuf16::AppendNumFixedWidth(aVal, aRadix, aWidth);
+	}
+/**
+Appends a zero terminator onto the end of this descriptor's data and returns
+a pointer to the data.
+The length of the descriptor is not changed, but the capacity of the
+descriptor may need to be grown to accommodate the zero terminator.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@return A pointer to the descriptor's zero terminated data.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C const TUint16 *LString16::PtrZL()
+	{
+	ReserveFreeCapacityL(1);
+	return RBuf16::PtrZ();
+	}
+/**
+Copies and folds data from the specified descriptor into this descriptor replacing
+any existing data.
+The length of this descriptor is set to reflect the new
+data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used when dealing with strings in natural
+language.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non-modifiable descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::CopyFL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::CopyF(aDes);
+	}
+/**
+Copies and collates data from the specified descriptor
+into this descriptor replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non-modifiable descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::CopyCL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::CopyC(aDes);
+	}
+/**
+Copies text from the specified descriptor and converts it to lower case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to lower case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non modifiable descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::CopyLCL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::CopyLC(aDes);
+	}
+/**
+Copies text from the specified descriptor and converts it to upper case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to upper case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non modifiable descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::CopyUCL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::CopyUC(aDes);
+	}
+/**
+Copies text from the specified descriptor and capitalises it before putting
+it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Capitalisation is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes A 16-bit non-modifiable descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::CopyCPL(const TDesC16& aDes)
+	{
+	ReserveL(aDes.Length());
+	RBuf16::CopyCP(aDes);
+	}
+/**
+Appends and fills this descriptor with the specified character.
+The descriptor is appended with the specified number of characters.
+and its length is changed to reflect this.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aChar   The fill character.
+@param aLength The number of fill characters to be appended.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aLength is negative
+*/
+EXPORT_C void LString16::AppendFillL(TChar aChar,TInt aLength)
+	{
+	ReserveFreeCapacityGrowExponentialL(aLength);
+	RBuf16::AppendFill(aChar, aLength);
+	}
+/**
+Appends a zero terminator onto the end of this descriptor's data.
+The length of the descriptor is not changed, but the capacity of the
+descriptor may need to be grown to accommodate the zero terminator.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::ZeroTerminateL()
+	{
+	ReserveFreeCapacityL(1);
+	RBuf16::ZeroTerminate();
+	}
+/**
+Swaps the data represented by this descriptor with the data represented by
+the specified descriptor.
+The lengths of both descriptors are also swapped to reflect the change.
+Note that each descriptor must be capable of accommodating the contents of
+the other descriptor.
+Each descriptor must be capable of accommodating the contents of the
+other descriptor. If the maximum length of the descriptor parameter is
+smaller than the length of the target LString16, then the function
+raises a USER 11 panic. The target LString16 will be grown if
+necessary to accommodate the descriptor parameter's data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes The 16-bit modifiable descriptor whose data is to be swapped with
+the data of this descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if the maximum length of the descriptor parameter is smaller than the
+length of the target LString16
+*/
+EXPORT_C void LString16::SwapL(TDes16& aDes)
+	{
+	ReserveL(aDes.Length());
+	TDes16::Swap(aDes);
+	}
+/**
+Swaps the data represented by this string descriptor with the data
+represented by the specified string descriptor.
+The lengths of both string descriptors are also swapped to reflect the
+change, and their buffers grown as necessary to accommodate the data
+they receive.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes The 16-bit modifiable string descriptor whose data is to be swapped with
+the data of this descriptor.
+@leave KErrNoMemory if one of the underlying buffers needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::SwapL(LString16& aDes)
+	{
+	this->ReserveL(aDes.Length());
+	aDes.ReserveL(this->Length());
+	TDes16::Swap(aDes);
+	}
+/**
+Inserts data into this descriptor.
+The length of this descriptor is changed to reflect the extra data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos The position within the data where insertion is to start. This
+is an offset value; a zero value refers to the leftmost data
+position.
+@param aDes A 16-bit non modifiable descriptor whose data is to be inserted.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+*/
+EXPORT_C void LString16::InsertL(TInt aPos,const TDesC16& aDes)
+	{
+	ReserveFreeCapacityGrowExponentialL(aDes.Length());
+	RBuf16::Insert(aPos, aDes);
+	}
+/**
+Replaces data in this descriptor.
+The specified length can be different to the length of the replacement data.
+The length of this descriptor changes to reflect the change of data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos    The position within the data where replacement is to start.
+This is an offset value; a zero value refers to the leftmost
+data position.
+@param aLength The length of data to be replaced.
+@param aDes    The source 16-bit non modifiable descriptor whose data is to
+replace the target descriptor's data at aPos.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER  8  if aLength is negative
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+@panic USER 16  if the length of the source descriptor aDes is negative
+*/
+EXPORT_C void LString16::ReplaceL(TInt aPos,TInt aLength,const TDesC16& aDes)
+	{
+	TInt delta = aDes.Length() - aLength;
+	if (delta > 0)
+		{
+		ReserveFreeCapacityGrowExponentialL(delta);
+		}
+	RBuf16::Replace(aPos, aLength, aDes);
+	}
+/**
+Copies data into this descriptor and justifies it, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The target area is considered to be an area of specified width positioned at
+the beginning of this descriptor's data area. Source data is copied into, and
+aligned within this target area according to the specified alignment
+instruction.
+If the length of the target area is larger than the length of the source, then
+spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes        A 16-bit non-modifiable descriptor containing the source data.
+The length of the data to be copied is the smaller of:
+the length of the source descriptor, and
+the width of the target area (only if this is not the
+explicit negative value KDefaultJustifyWidth).
+@param aWidth      The width of the target area. If this has the specific
+negative value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16::JustifyL(const TDesC16& aDes,TInt aWidth,TAlign aAlignment,TChar aFill)
+	{
+	TInt width = (aWidth == KDefaultJustifyWidth ? aDes.Length() : aWidth);
+	ReserveL(width);
+	RBuf16::Justify(aDes, aWidth, aAlignment, aFill);
+	}
+/**
+Converts the specified unsigned integer into a fixed width character
+representation based on the specified number system and copies the conversion
+into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The function generates the exact number of specified characters, either padding
+to the left with character zeroes or discarding low order characters as
+necessary.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+upper case.
+This function is equivalent to using Format() with parameters which specify:
+1. a fixed length target field
+2. padding with zero characters, for example "%08x".
+When this is the case, always use NumFixedWidthUC() in
+preference to Format() as it is more efficient.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The unsigned integer value.
+@param aRadix The number system representation for the unsigned integer.
+@param aWidth The number of characters: to be used to contain the conversion,
+to be copied into this descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see TDes16::Format()
+*/
+EXPORT_C void LString16::NumFixedWidthUCL(TUint aVal,TRadix aRadix,TInt aWidth)
+	{
+	Zero();
+	AppendNumFixedWidthUCL(aVal, aRadix, aWidth);
+	}
+/**
+Converts the specified 64 bit unsigned integer into a character representation
+based on the specified number system and copies the conversion into this
+descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+upper case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The 64 bit integer value. This is always treated as an unsigned
+value for all builds.
+@param aRadix The number system representation for the 64 bit integer. If no
+explicit value is specified, then EDecimal is the default.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::NumUCL(TUint64 aVal, TRadix aRadix)
+	{
+	Zero();
+	AppendNumUCL(aVal, aRadix);
+	}
+/**
+Converts the specified floating point number into a character representation
+and copies the conversion into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The character representation of the real number is dictated by the specified
+format.
+Note that the function leaves if the iType data member of the specified
+TRealFormat object has both an invalid character representation format
+(i.e. the format type) and invalid format flags.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal    The floating point number to be converted.
+@param aFormat The format of the conversion.
+@return If the conversion is successful, the length of this descriptor. If
+the conversion fails, a negative value indicating the cause of failure.
+In addition, extra information on the cause of the failure may be
+appended onto this descriptor. The possible values and their meaning
+are:
+1.KErrArgument - the supplied floating point number is not a valid
+number. The three characters NaN are appended to this descriptor.
+2.KErrOverflow - the number is too large to represent.
+2.1 For positive overflow, the three characters Inf are appended
+to this descriptor.
+2.2 For negative overflow, the four characters -Inf are appended
+	        to this descriptor.
+	    3.KErrUnderflow - the number is too small to represent.
+	    3.1 For positive underflow, the three characters Inf are appended
+	        to this descriptor.
+3.2	For negative underflow, the four characters -Inf are appended
+to this descriptor.
+	    4.KErrGeneral - the conversion cannot be completed. There are a
+	      number of possible reasons for this, but the most common is:
+	    4.1 The character representation format (i.e. the format type), as
+	        defined in the TRealFormat object is not recognised.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see TRealFormat::iType
+*/
+EXPORT_C TInt LString16::NumL(TReal aVal,const TRealFormat &aFormat)
+	{
+	Zero();
+	return AppendNumL(aVal, aFormat);
+	}
+/**
+Converts the 64-bit signed integer into a decimal character representation
+and copies the conversion into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+If the integer is negative, the character representation is prefixed by a
+minus sign.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal The 64-bit signed integer value.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::NumL(TInt64 aVal)
+	{
+	Zero();
+	AppendNumL(aVal);
+	}
+/**
+Converts the specified 64 bit unsigned integer into a character representation
+based on the specified number system and copies the conversion into this
+descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+lower case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The 64 bit integer value. This is treated as an unsigned
+value for all builds.
+@param aRadix The number system representation for the 64 bit integer.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::NumL(TUint64 aVal, TRadix aRadix)
+	{
+	Zero();
+	AppendNumL(aVal, aRadix);
+	}
+/**
+Formats and copies text into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The function takes a format string and a variable number of arguments.
+The format string contains literal text embedded with directives for converting
+the trailing list of arguments into text.
+The embedded directives are character sequences prefixed with the '%' character.
+The literal text is simply copied into this descriptor unaltered while
+the '%' directives are used to convert successive arguments from the
+trailing list.
+The resulting stream of literal text and converted arguments is copied into
+this descriptor.
+The syntax of the embedded directives follows one of four general patterns.
+Note that formatting of single numerical values can be achieved more
+conveniently using the Num() and NumUC() member functions of this class.
+The full description of the syntax of a format string cannot be	included here.
+For full details, navigate to the Symbian OS guide, and follow the hierarchy of links:
+@code
+Symbian OS Guide
+	Base
+		Using  User Library (E32)
+			Buffers and Strings
+				Using Descriptors
+					How to Use Descriptors
+						Format string syntax
+@endcode
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aFmt The descriptor containing the format string.
+The TRefByValue class provides a constructor which takes a
+TDesC8 type.
+@param ...  A variable number of arguments to be converted to text as
+dictated by the format string.
+@panic USER 12  if the format string has incorrect syntax.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see TDes16::Num()
+@see TDes16::NumUC()
+*/
+EXPORT_C void LString16::FormatL(TRefByValue<const TDesC16> aFmt,...)
+	{
+VA_LIST list;
+VA_START(list,aFmt);
+FormatListL(aFmt,list);
+	}
+/**
+Formats and copies text into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The behaviour of this function is the same as FormatL(). In practice, it is
+better and easier to use FormatL(), passing a variable number of arguments
+as required by the format string.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aFmt  The descriptor containing the format string.
+@param aList A pointer to an argument list.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see TDes16::Format()
+@see VA_LIST
+*/
+EXPORT_C void LString16::FormatListL(const TDesC16& aFmt,VA_LIST aList)
+	{
+	Zero();
+	AppendFormatListL(aFmt, aList);
+	}
+/**
+Appends data onto the end of this descriptor's data and justifies it.
+The source of the appended data is an existing descriptor.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes        A 16-bit non-modifiable descriptor containing the source
+data. The length of the data to be copied is the smaller of:
+the length of the source descriptor, and
+the width of the target area (only if this is not the
+explicit negative value KDefaultJustifyWidth).
+@param aWidth      The width of the target area. If this has the specific
+negative value KDefaultJustifyWidth, then the width is
+	               re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16::AppendJustifyL(const TDesC16& Des,TInt aWidth,TAlign aAlignment,TChar aFill)
+	{
+	TInt width = (aWidth == KDefaultJustifyWidth ? Des.Length() : aWidth);
+	ReserveFreeCapacityGrowExponentialL(width);
+	RBuf16::AppendJustify(Des, aWidth, aAlignment, aFill);
+	}
+/**
+Appends data onto the end of this descriptor's data and justifies it.
+The source of the appended data is an existing descriptor.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aDes        An 8-bit non-modifiable descriptor containing the source data.
+@param aLength     The length of data to be copied from the source descriptor.
+If this is greater than the width of the target area, then
+the length of data copied is limited to the width.
+The length of data to be copied must not be 	greater than
+the length of the source descriptor. Note that this
+condition is not automatically tested.
+@param aWidth      The width of the target area. If this has the specific negative
+value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16::AppendJustifyL(const TDesC16& Des,TInt aLength,TInt aWidth,TAlign aAlignment,TChar aFill)
+	{
+	TInt width = (aWidth == KDefaultJustifyWidth ? aLength : aWidth);
+	ReserveFreeCapacityGrowExponentialL(width);
+	RBuf16::AppendJustify(Des, aLength, aWidth, aAlignment, aFill);
+	}
+/**
+Appends a zero terminated string onto the end of this descriptor's data and
+justifies it.
+The zero terminator is not copied.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within, this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString     A pointer to a zero terminated string The length of the data
+to be copied is the smaller of: the length of the string (excluding the zero
+terminator), the width of the target area (only if this is not the explicit
+negative value KDefaultJustifyWidth).
+@param aWidth      The width of the target area. If this has the specific negative
+value KDefaultJustifyWidth, then the width is re-set to the length of the
+zero terminated string (excluding the zero terminator).
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16::AppendJustifyL(const TUint16* aZeroTerminatedString,TInt aWidth,TAlign aAlignment,TChar aFill)
+	{
+	TInt width = (aWidth == KDefaultJustifyWidth ? User::StringLength(aZeroTerminatedString) : aWidth);
+	ReserveFreeCapacityGrowExponentialL(width);
+	RBuf16::AppendJustify(aZeroTerminatedString, aWidth, aAlignment, aFill);
+	}
+/**
+Appends data onto the end of this descriptor's data and justifies it.
+The source of the appended data is a memory location.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within, this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aString     A pointer to a source memory location.
+@param aLength     The length of data to be copied. If this is greater than the
+width of the target area, then the length of data copied is
+limited to the width.
+@param aWidth      The width of the target area. If this has the specific negative
+value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendJustifyL(const TUint16* aString,TInt aLength,TInt aWidth,TAlign aAlignment,TChar aFill)
+	{
+	TInt width = (aWidth == KDefaultJustifyWidth ? aLength : aWidth);
+	ReserveFreeCapacityGrowExponentialL(width);
+	RBuf16::AppendJustify(aString, aLength, aWidth, aAlignment, aFill);
+	}
+/**
+Converts the specified unsigned integer into a fixed width character
+representation based on the specified number system and appends the conversion
+onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+The function generates the exact number of specified characters, either
+padding to the left with character zeroes or discarding low order characters
+as necessary.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+upper case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The unsigned integer value.
+@param aRadix The number system representation for the unsigned integer.
+@param aWidth The number of characters: to be used to contain the conversion,
+to be appended to this descriptor.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendNumFixedWidthUCL(TUint aVal,TRadix aRadix,TInt aWidth)
+	{
+	ReserveFreeCapacityGrowExponentialL(aWidth);
+	RBuf16::AppendNumFixedWidthUC(aVal, aRadix, aWidth);
+	}
+/**
+Converts the specified 64 bit integer into a character representation
+based on the specified number system and appends the conversion onto the end
+of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+upper case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The 64 bit integer value. This is always treated as an unsigned
+value.
+@param aRadix The number system representation for the 64 bit integer. If no
+explicit value is specified, then EDecimal is the default.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendNumUCL(TUint64 aVal, TRadix aRadix)
+	{
+	ReserveFreeCapacityGrowExponentialL(64 + 1 + KDefaultExpandSize);
+	RBuf16::AppendNumUC(aVal, aRadix);
+	}
+/**
+Converts the specified floating point number into a character representation
+and appends the conversion onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+The character representation of the real number is dictated by the specified
+format.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal    The floating point number to be converted.
+@param aFormat The format of the conversion.
+@return If the conversion is successful, the length of this descriptor. If
+the conversion fails, a negative value indicating the cause of failure.
+In addition, extra information on the cause of the failure may be
+appended onto this descriptor. The possible values and their meaning
+are:
+1.KErrArgument - the supplied floating point number is not a valid
+number. The three characters NaN are appended to this descriptor.
+2.KErrOverflow - the number is too large to represent.
+2.1 For positive overflow, the three characters Inf are appended
+to this descriptor.
+2.2 For negative overflow, the four characters -Inf are appended
+	        to this descriptor.
+	    3.KErrUnderflow - the number is too small to represent.
+	    3.1 For positive underflow, the three characters Inf are appended
+	        to this descriptor.
+3.2	For negative underflow, the four characters -Inf are appended
+to this descriptor.
+	    4.KErrGeneral - the conversion cannot be completed. There are a
+	      number of possible reasons for this, but the most common is:
+	    4.1 The character representation format (i.e. the format type), as
+	        defined in the TRealFormat object is not recognised.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C TInt LString16::AppendNumL(TReal aVal,const TRealFormat& aFormat)
+	{
+	ReserveFreeCapacityGrowExponentialL(aFormat.iWidth + 1 + KDefaultExpandSize);
+	return RBuf16::AppendNum(aVal, aFormat);
+	}
+/**
+Converts the 64-bit signed integer into a decimal character representation
+and appends the conversion onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+If the integer is negative, the character representation is prefixed by a
+minus sign.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal The 64-bit signed integer value.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendNumL(TInt64 aVal)
+	{
+	ReserveFreeCapacityGrowExponentialL(64 + 1 + KDefaultExpandSize);
+	RBuf16::AppendNum(aVal);
+	}
+/**
+Converts the specified 64 bit integer into a character representation
+based on the specified number system and appends the conversion onto the end
+of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+When a hexadecimal conversion is specified, hexadecimal characters are in
+lower case.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aVal   The 64 bit integer value. This is always treated as an unsigned
+value.
+@param aRadix The number system representation for the 64 bit integer.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16::AppendNumL(TUint64 aVal, TRadix aRadix)
+	{
+	ReserveFreeCapacityGrowExponentialL(64 + 1 + KDefaultExpandSize);
+	RBuf16::AppendNum(aVal, aRadix);
+	}
+/**
+Formats and appends text onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+The function takes a format string and a variable number of arguments.
+The format string contains literal text, embedded with directives,
+for converting the trailing list of arguments into text.
+The embedded directives are character sequences prefixed with the '%' character.
+The literal text is simply copied into this descriptor unaltered while
+the '%' directives are used to convert successive arguments from the
+trailing list. See the description of the Format() function.
+Literal text is appended on a character by character basis, and the
+underlying buffer is grown as necessary to accommodate it.
+Text converted from a trailing argument is appended as a complete
+string, and the underlying buffer is grown as necessary to accommodate
+it.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aFmt             The 16-bit non-modifiable descriptor containing the
+format string. The TRefByValue class provides a
+constructor which takes a TDesC16 type.
+@param ...              A variable number of arguments to be converted to text
+as dictated by the format string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 12  if the format string has incorrect syntax.
+@see TDes16::Format()
+@see TDes16Overflow::Overflow()
+*/
+EXPORT_C void LString16::AppendFormatL(TRefByValue<const TDesC16> aFmt,...)
+	{
+VA_LIST list;
+VA_START(list,aFmt);
+AppendFormatListL(aFmt,list);
+	}
+class TRetryOverflow16 : public TDes16Overflow
+	{
+public:
+	TRetryOverflow16() : iOverflow(EFalse)
+		{
+		}
+	virtual void Overflow(TDes16& /*aDes*/)
+		{
+		iOverflow = ETrue;
+		}
+	TBool iOverflow;
+	};
+/**
+Formats and appends text onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+The behaviour of this function is the same as
+AppendFormatL(TRefByValue<const TDesC16> aFmt,TDes16Overflow *aOverflowHandler,...).
+In practice, it is better and easier to use AppendFormat(), passing a variable number of
+arguments as required by the format string.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aFmt          The descriptor containing the format string.
+@param aList            A pointer to an argument list.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see TDes16::AppendFormat
+@see VA_LIST
+*/
+EXPORT_C void LString16::AppendFormatListL(const TDesC16& aFmt,VA_LIST aList)
+	{
+	ReserveFreeCapacityGrowExponentialL(aFmt.Length() + KDefaultExpandSize); // We use aFmt as a hint
+	for (;;)
+		{
+		TInt before = Length();
+		TRetryOverflow16 overflow;
+		RBuf16::AppendFormatList(aFmt, aList, &overflow);
+		if (overflow.iOverflow)
+			{
+			SetLengthL(before); // Can't leave
+			ReserveCapacityGrowExponentialL();
+			}
+		else
+			{
+			break;
+			}
+		}
+	}
+/**
+Unlinks and transfers ownership of the specified 16-bit resizable descriptor's
+buffer to this object. The source descriptor is detached from the buffer.
+@param aString The source 16-bit resizable buffer. The ownership of this
+object's buffer is to be transferred.
+@see RBuf16::Close()
+*/
+EXPORT_C void LString16::Assign(const LString16& aString)
+	{
+	// free any previously owned resource
+	Reset();
+	RBuf16::Assign(aString);
+	// unlink buffer from original descriptor
+	new (const_cast<LString16*>(&aString)) LString16();
+	}
+/**
+Transfers ownership of the specified 16-bit resizable descriptor's
+buffer to this object. The source descriptor is detached from the buffer.
+@param aRBuf The source 16-bit resizable buffer. The ownership of this
+object's buffer is to be transferred.
+@see RBuf16::Assign()
+*/
+EXPORT_C void LString16::Assign(const RBuf16& aRBuf)
+	{
+	// free any previously owned resource
+	Reset();
+	RBuf16::Assign(aRBuf);
+	// reset the RBuf;
+	new (const_cast<RBuf16*>(&aRBuf)) RBuf16();
+	}
+/**
+Transfers ownership of the specified 16-bit resizable descriptor's this object.
+@param aHBuf The heap descriptor to be transferred to this object.
+			 The ownership of this object's buffer is to be transferred.
+@see RBuf16::Assign()
+*/
+EXPORT_C void LString16::Assign(HBufC16* aHBuf)
+	{
+	// free any previously owned resource
+	Reset();
+	RBuf16::Assign(aHBuf);
+	}
+/**
+Assigns ownership of the specified allocated memory to this object.
+@param aHeapCell The allocated memory to be assigned to this object.
+				This pointer can be NULL, which means that a zero length
+				16-bit resizable buffer descriptor is created.
+@param aMaxLength The maximum length of the descriptor.
+@panic USER 8 If the specified maximum length is greater then the size of the
+				allocated heap cell, or the specified maximum length is NOT
+				zero when the pointer to the heap cell is NULL.
+@see RBuf16::Close()
+@see RBuf16::Assign()
+*/
+EXPORT_C void LString16::Assign(TUint16* aHeapCell, TInt aMaxLength)
+	{
+	// free any previously owned resource
+	Reset();
+	RBuf16::Assign(aHeapCell, aMaxLength);
+	}
+/**
+Transfers ownership of the specified 16-bit resizable descriptor's this object.
+@param aHeapCell The allocated memory to be assigned to this object.
+@param aLength The length of the descriptor.
+@param aMaxLength The maximum length of the descriptor.
+@panic USER 8 If the specified maximum length is greater then the size of the
+				allocated heap cell, or the specified length is greater then
+				the specified maximum length, or the specified maximum length
+				is NOT zero when the pointer to the heap cell is NULL.
+@see RBuf16::Close()
+@see RBuf16::Assign()
+*/
+EXPORT_C void LString16::Assign(TUint16* aHeapCell,TInt aLength,TInt aMaxLength)
+	{
+	// free any previously owned resource
+	Reset();
+	RBuf16::Assign(aHeapCell, aLength, aMaxLength);
+	}
+/**
+Creates a 16-bit resizable buffer descriptor that has been initialised with
+data from the specified read stream; leaves on failure.
+Data is assigned to the new descriptor from the specified stream.
+This variant assumes that the stream contains the length of the data followed
+by the data itself.
+The function is implemented by calling the HBufC16::NewL(RReadStream&amp;,TInt)
+variant and then assigning the resulting heap descriptor using
+the RBuf16::Assign(HBufC16*) variant. The comments that describe
+the HBufC16::NewL() variant	also apply to this RBuf16::CreateL() function.
+The function may leave with one of the system-wide error codes,	specifically
+KErrOverflow, if the length of the data as read from the stream is greater than
+the upper limit as specified by the aMaxLength parameter.
+@param aStream    The stream from which the data length and the data to be
+assigned to the new descriptor, are taken.
+@param aMaxLength The upper limit on the length of data that the descriptor is
+to represent. The value of this parameter must be non-negative
+otherwise the	underlying function will panic.
+*/
+EXPORT_C void LString16::CreateL(RReadStream &aStream,TInt aMaxLength)
+	{
+	Reset();
+	Assign(HBufC16::NewL(aStream,aMaxLength));
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString     A pointer to a zero terminated string .
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see LString16::AppendL
+*/
+EXPORT_C LString16& LString16::operator+=(const TUint16* aZeroTerminatedString)
+	{
+	AppendL(aZeroTerminatedString,User::StringLength(aZeroTerminatedString));
+	return *this;
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString    A pointer to the data to be copied.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendL(const TUint16* aZeroTerminatedString)
+	{
+	AppendL(aZeroTerminatedString,User::StringLength(aZeroTerminatedString));
+	}
+/**
+Constructor to create a 16-bit resizable string descriptor containing
+a copy of the specified (source) zero-terminated wide character string data, or leave
+on failure.
+The constructor allocates sufficient memory so that this string
+descriptor's maximum length is the same as the length of the source
+string. Both the current length and the maximum length of this string
+descriptor are set to the length of the source string.
+The data contained in the source string is copied into this string
+descriptor. The zero terminator is not copied.
+@param aWideCharStr A pointer to a zero-terminated wide character string
+@leave KErrNoMemory If there is insufficient memory.
+@see LString16::CopyL
+*/
+EXPORT_C LString16::LString16(const wchar_t* aWideCharStr)
+	: iReserved(0)
+	{
+	CopyL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+The length of this descriptor is set to reflect the new data.
+This operation may cause the target string descriptor's heap buffer to
+be reallocated in order to accommodate the new data. As a result,
+MaxLength() and Ptr() may return different values afterwards, and any
+existing raw pointers to into the descriptor data may be invalidated.
+Note that the automatic resizing performed is a change to the
+functionality of this operation compared to other descriptor
+classes. This change is only active on objects directly declared
+LString16; when LString16 instances are instead manipulated via
+references to TDes16 or TDesC16, the standard (non-resizing, panicing)
+variant is invoked.
+@param aWideCharStr A pointer to a wide character zero-terminated string
+@return A reference to this 16-bit string descriptor.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@see LString16::CopyL
+*/
+EXPORT_C LString16& LString16::operator=(const wchar_t* aWideCharStr)
+	{
+	CopyL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	return *this;
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr     A pointer to a wide character zero terminated string .
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@see LString16::AppendL
+*/
+EXPORT_C LString16& LString16::operator+=(const wchar_t*  aWideCharStr)
+	{
+	AppendL(reinterpret_cast<const TUint16*>(aWideCharStr),User::StringLength(reinterpret_cast<const TUint16*>(aWideCharStr)));
+	return *this;
+	}
+/**
+Copies data into this 16-bit string descriptor, replacing any existing
+data, and expanding its heap buffer to accommodate if necessary.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr    A pointer to a wide character zero terminated string to be copied.
+@leave KErrNoMemory If the heap buffer of the string descriptor being
+assigned to needs to be expanded, but there is
+insufficient memory to do so
+@panic USER 11  if aLength is negative.
+@see TDes16::Copy
+*/
+EXPORT_C void LString16::CopyL(const wchar_t*  aWideCharStr)
+	{
+	CopyL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Appends data onto the end of this descriptor's data and justifies it.
+The source of the appended data is a memory location.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within, this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr     A pointer to a source memory location.
+@param aLength     The length of data to be copied. If this is greater than the
+width of the target area, then the length of data copied is
+limited to the width.
+@param aWidth      The width of the target area. If this has the specific negative
+value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendJustifyL(const wchar_t* aWideCharStr,TInt aWidth,TAlign anAlignment,TChar aFill)
+	{
+	AppendJustifyL(reinterpret_cast<const TUint16*>( aWideCharStr),aWidth,anAlignment,aFill);
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr    A pointer to the data to be copied.
+@param aLength The length of data to be copied.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendL(const wchar_t* aWideCharStr,TInt aLength)
+	{
+	AppendL(reinterpret_cast<const TUint16*>(aWideCharStr),aLength);
+	}
+/**
+Appends data onto the end of this descriptor's data.
+The length of this descriptor is incremented to reflect the new content.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr    A pointer to the data to be copied.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16::AppendL(const wchar_t* aWideCharStr)
+	{
+	AppendL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this Descriptor's data is equal to the specified
+string's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if equal, false otherwise.
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator==( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator==(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this Descriptor's data is equal to the specified
+string's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if equal, false otherwise.
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator==( const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator==(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Determines whether this descriptor's data is less than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if this descriptor's data is less than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator<( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator<(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this descriptor's data is less than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if this descriptor's data is less than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator<(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator<(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Determines whether this descriptor's data is less than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if this descriptor's data is less than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator<=( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator<=(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this descriptor's data is less than/equal to the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if this descriptor's data is less than/equal to that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator<=(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator<=(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Determines whether this descriptor's data is greater than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if this descriptor's data is greater than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator>( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator>(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this descriptor's data is greater than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if this descriptor's data is greater than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator>(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator>(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Determines whether this descriptor's data is greater than/equal to the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if this descriptor's data is greater than/equal to that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator>=( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator>=(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this descriptor's data is greater than the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if this descriptor's data is greater than that of the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator>=(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator>=(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Determines whether this descriptor's data is not equal to the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return True if this descriptor's data is not equal to the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator!=( const wchar_t* aWideCharStr) const
+	{
+	return LString16::operator!=(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Determines whether this descriptor's data is not equal to the specified
+strings's data.
+The comparison is implemented internally using the TDesC::Compare() function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return True if this descriptor's data is not equal to the specified string's data
+@see TDesC::Compare
+*/
+EXPORT_C TBool LString16::operator!=(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::operator!=(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Searches this descriptor's data for a match with the match pattern supplied
+in the specified string.
+The match pattern can contain the wildcard characters "*" and "?", where "*"
+matches zero or more consecutive occurrences of any character and "?" matches
+a single occurrence of any character.
+Note that there is no 'escape character', which means that it is not possible
+to match either the "*" character itself or the "?" character itself using
+this function.
+@param aWideCharStr The wide character string whose data is to be matched
+with this Descriptor's data.
+@return If a match is found, the offset within this descriptor's data where
+the match first occurs. KErrNotFound, if there is no match.
+*/
+EXPORT_C TInt LString16::Match(const wchar_t* aWideCharStr) const
+	{
+	return LString16::Match(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Searches this descriptor's data for a match with the match pattern supplied
+in the specified string.
+The match pattern can contain the wildcard characters "*" and "?", where "*"
+matches zero or more consecutive occurrences of any character and "?" matches
+a single occurrence of any character.
+Note that there is no 'escape character', which means that it is not possible
+to match either the "*" character itself or the "?" character itself using
+this function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be matched with this Descriptor's data.
+@return If a match is found, the offset within this descriptor's data where
+the match first occurs. KErrNotFound, if there is no match.
+*/
+EXPORT_C TInt LString16::Match(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::Match(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Searches this descriptor's folded data for a match with the folded match
+pattern supplied in the specified string.
+The match pattern can contain the wildcard characters "*" and "?", where "*"
+matches zero or more consecutive occurrences of any character and "?" matches
+a single occurrence of any character.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for matching strings in natural language;
+use MatchC() for this.
+Note that there is no 'escape character', which means that it is not possible
+to match either the "*" character itself or the "?" character itself using
+this function.
+@param aWideCharStr The wide character string whose data is to be matched
+with this Descriptor's data.
+@return If a match is found, the offset within this descriptor's data where
+the match first occurs. KErrNotFound, if there is no match.
+@see TDesC::MatchC()
+*/
+EXPORT_C TInt LString16::MatchF(const wchar_t* aWideCharStr) const
+	{
+	return LString16::MatchF(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Searches this descriptor's folded data for a match with the folded match
+pattern supplied in the specified string.
+The match pattern can contain the wildcard characters "*" and "?", where "*"
+matches zero or more consecutive occurrences of any character and "?" matches
+a single occurrence of any character.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for matching strings in natural language;
+use MatchC() for this.
+Note that there is no 'escape character', which means that it is not possible
+to match either the "*" character itself or the "?" character itself using
+this function.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be matched with this Descriptor's data.
+@return If a match is found, the offset within this descriptor's data where
+the match first occurs. KErrNotFound, if there is no match.
+@see TDesC::MatchC()
+*/
+EXPORT_C TInt LString16::MatchF(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::MatchF(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Compares this descriptor's data with the specified string's data.
+The comparison proceeds on a byte for byte basis. The result of the comparison
+is based on the difference of the first bytes to disagree.
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return Positive, if this descriptor is greater than the specified string.
+Negative, if this descriptor is less than the specified string.
+Zero, if both the descriptor and the string have the same length
+and the their contents are the same.
+*/
+EXPORT_C TInt LString16::Compare(const wchar_t* aWideCharStr) const
+	{
+	return LString16::Compare(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Compares this descriptor's data with the specified string's data.
+The comparison proceeds on a byte for byte basis. The result of the comparison
+is based on the difference of the first bytes to disagree.
+@param aZeroTerminatedString The wide Zero TerminatedString string whose data
+is to be compared with this Descriptor's data.
+@return Positive, if this descriptor is greater than the specified string.
+Negative, if this descriptor is less than the specified string.
+Zero, if both the descriptor and the string have the same length
+and the their contents are the same.
+*/
+EXPORT_C TInt LString16::Compare(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::Compare(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Compares this descriptor's folded data with the specified string's folded
+data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for comparing strings in natural language;
+@param aWideCharStr The wide character string whose data is to be compared
+with this Descriptor's data.
+@return Positive, if this descriptor is greater than the specified string.
+Negative, if this descriptor is less than the specified string.
+Zero, if the descriptor and the specified string have the same length
+and the their contents are the same.
+@see TDesC::Compare()
+*/
+EXPORT_C TInt LString16::CompareF(const wchar_t* aWideCharStr) const
+	{
+	return LString16::CompareF(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Compares this descriptor's folded data with the specified string's folded
+data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for comparing strings in natural language;
+@param aZeroTerminatedString The wide Zero Terminated String whose data
+is to be compared with this string's data.
+@return Positive, if this descriptor is greater than the specified string.
+Negative, if this descriptor is less than the specified string.
+Zero, if the descriptor and the specified string have the same length
+and the their contents are the same.
+@see TDesC::Compare()
+*/
+EXPORT_C TInt LString16::CompareF(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::CompareF(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Searches for the first occurrence of the specified data sequence within this
+descriptor.
+Searching always starts at the beginning of this descriptor's data.
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found.
+*/
+EXPORT_C TInt LString16::Find(const wchar_t* aWideCharStr) const
+	{
+	return LString16::Find(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Searches for the first occurrence of the specified data sequence within this
+descriptor.
+Searching always starts at the beginning of this descriptor's data.
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found.
+*/
+EXPORT_C TInt LString16::Find(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::Find(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Searches for the first occurrence of the specified data sequence within this
+descriptor.
+Searching always starts at the beginning of this descriptor's data.
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@param aLenS The length of the data sequence to be searched for. This value
+must not be negative, otherwise the function raises a panic.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found.
+@panic  USER 29 if aLenS is negative.
+*/
+EXPORT_C TInt LString16::Find(const wchar_t* aWideCharStr,TInt aLenS) const
+	{
+	return LString16::Find(reinterpret_cast<const TUint16*>(aWideCharStr), aLenS);
+	}
+/**
+Searches for the first occurrence of the specified folded data sequence within
+this descriptor's folded data.
+Searching always starts at the beginning of this descriptor's data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for finding strings in natural language;
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found. Zero, if the
+length of the search data sequence is zero.
+*/
+EXPORT_C TInt LString16::FindF(const wchar_t* aWideCharStr) const
+	{
+	return LString16::FindF(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Searches for the first occurrence of the specified folded data sequence within
+this descriptor's folded data.
+Searching always starts at the beginning of this descriptor's data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for finding strings in natural language;
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found. Zero, if the
+length of the search data sequence is zero.
+*/
+EXPORT_C TInt LString16::FindF(const TUint16* aZeroTerminatedString) const
+	{
+	return RBuf16::FindF(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Searches for the first occurrence of the specified folded data sequence within
+this descriptor's folded data.
+Searching always starts at the beginning of this descriptor's data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used for finding strings in natural language;
+@param aWideCharStr The wide character string whose data is to be searched for,
+within this Descriptor's data.
+@param aLenS The length of the data sequence to be searched for. This value
+must not be negative, otherwise the function raises a panic.
+@return The offset of the data sequence from the beginning of this descriptor's
+data. KErrNotFound, if the data sequence cannot be found. Zero, if the
+length of the search data sequence is zero.
+@panic USER 29 if aLenS is negative
+*/
+EXPORT_C TInt LString16::FindF(const wchar_t* aWideCharStr, TInt aLen) const
+	{
+	return RBuf16::FindF(reinterpret_cast<const TUint16*>(aWideCharStr),aLen);
+	}
+/**
+Copies and folds data from the specified string into this descriptor replacing
+any existing data.
+The length of this descriptor is set to reflect the new
+data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used when dealing with strings in natural
+language.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr A wide character string
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyFL(const wchar_t* aWideCharStr )
+	{
+	LString16::CopyFL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Copies and folds data from the specified string into this descriptor replacing
+any existing data.
+The length of this descriptor is set to reflect the new
+data.
+Note that folding is locale-independent behaviour. It is also important to
+note that there can be no guarantee that folding is in any way culturally
+appropriate, and should not be used when dealing with strings in natural
+language.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString A wide zero terminated string
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyFL(const TUint16* aZeroTerminatedString )
+	{
+	LString16::CopyFL(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Copies text from the specified string and converts it to lower case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to lower case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr A wide character string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyLCL(const wchar_t* aWideCharStr)
+	{
+	LString16::CopyLCL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Copies text from the specified string and converts it to lower case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to lower case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString A wide zero terminated string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyLCL(const TUint16* aZeroTerminatedString)
+	{
+	LString16::CopyLCL(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Copies text from the specified string and converts it to upper case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to upper case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr A wide character string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyUCL(const wchar_t* aWideCharStr)
+	{
+	LString16::CopyUCL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Copies text from the specified string and converts it to upper case before
+putting it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Conversion to upper case is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString A wide zero terminated string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyUCL(const TUint16* aZeroTerminatedString)
+	{
+	LString16::CopyUCL(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Copies text from the specified string and capitalises it before putting
+it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Capitalisation is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr A wide character string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyCPL(const wchar_t* aWideCharStr)
+	{
+	LString16::CopyCPL(reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Copies text from the specified string and capitalises it before putting
+it into this descriptor, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+Capitalisation is implemented as appropriate to the current locale.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aZeroTerminatedString A wide zero terminated string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+*/
+EXPORT_C void LString16:: CopyCPL(const TUint16* aZeroTerminatedString)
+	{
+	LString16::CopyCPL(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Inserts data into this descriptor.
+The length of this descriptor is changed to reflect the extra data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos The position within the data where insertion is to start. This
+is an offset value; a zero value refers to the leftmost data
+position.
+@param aWideCharStr A wide character string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+*/
+EXPORT_C void LString16:: InsertL(TInt aPos,const wchar_t* aWideCharStr)
+	{
+	LString16::InsertL(aPos, reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Inserts data into this descriptor.
+The length of this descriptor is changed to reflect the extra data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos The position within the data where insertion is to start. This
+is an offset value; a zero value refers to the leftmost data
+position.
+@param aZeroTerminatedString A wide null terminated string.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+*/
+EXPORT_C void LString16:: InsertL(TInt aPos,const TUint16* aZeroTerminatedString)
+	{
+	LString16::InsertL(aPos,TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Replaces data in this descriptor.
+The specified length can be different to the length of the replacement data.
+The length of this descriptor changes to reflect the change of data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos    The position within the data where replacement is to start.
+This is an offset value; a zero value refers to the leftmost
+data position.
+@param aLength The length of data to be replaced.
+@param aWideCharStr The source wide character string
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER  8  if aLength is negative
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+@panic USER 16  if the length of the source descriptor aDes is negative
+*/
+EXPORT_C void LString16:: ReplaceL(TInt aPos,TInt aLength,const wchar_t* aWideCharStr)
+	{
+	LString16::ReplaceL(aPos,aLength,reinterpret_cast<const TUint16*>(aWideCharStr));
+	}
+/**
+Replaces data in this descriptor.
+The specified length can be different to the length of the replacement data.
+The length of this descriptor changes to reflect the change of data.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aPos    The position within the data where replacement is to start.
+This is an offset value; a zero value refers to the leftmost
+data position.
+@param aLength The length of data to be replaced.
+@param aZeroTerminatedString The source wide null terminated character string
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER  8  if aLength is negative
+@panic USER 10  if aPos is negative or is greater than the length of this
+descriptor.
+@panic USER 16  if the length of the source descriptor aDes is negative
+*/
+EXPORT_C void LString16:: ReplaceL(TInt aPos,TInt aLength,const TUint16* aZeroTerminatedString)
+	{
+	LString16::ReplaceL(aPos,aLength,TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)));
+	}
+/**
+Copies data into this descriptor and justifies it, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The target area is considered to be an area of specified width positioned at
+the beginning of this descriptor's data area. Source data is copied into, and
+aligned within this target area according to the specified alignment
+instruction.
+If the length of the target area is larger than the length of the source, then
+spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr    A wide character string containing the source data.
+The length of the data to be copied is the smaller of:
+the length of the source descriptor, and
+the width of the target area (only if this is not the
+explicit negative value KDefaultJustifyWidth).
+@param aWidth      The width of the target area. If this has the specific
+negative value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16:: JustifyL(const wchar_t* aWideCharStr,TInt aWidth,TAlign anAlignment,TChar aFill)
+	{
+	LString16::JustifyL(reinterpret_cast<const TUint16*>(aWideCharStr),aWidth,anAlignment,aFill);
+	}
+/**
+Copies data into this descriptor and justifies it, replacing any existing data.
+The length of this descriptor is set to reflect the new data.
+The target area is considered to be an area of specified width positioned at
+the beginning of this descriptor's data area. Source data is copied into, and
+aligned within this target area according to the specified alignment
+instruction.
+If the length of the target area is larger than the length of the source, then
+spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aWideCharStr    A wide character string containing the source data.
+The length of the data to be copied is the smaller of:
+the length of the source descriptor, and
+the width of the target area (only if this is not the
+explicit negative value KDefaultJustifyWidth).
+@param aWidth      The width of the target area. If this has the specific
+negative value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+*/
+EXPORT_C void LString16:: JustifyL(const TUint16* aZeroTerminatedString,TInt aWidth,TAlign anAlignment,TChar aFill)
+	{
+	LString16::JustifyL(TPtrC16((aZeroTerminatedString), User::StringLength(aZeroTerminatedString)),aWidth,anAlignment,aFill);
+	}
+/**
+Appends data onto the end of this descriptor's data and justifies it.
+The source of the appended data is a memory location.
+The target area is considered to be an area of specified width, immediately
+following this descriptor's existing data. Source data is copied into, and
+aligned within, this target area according to the specified alignment instruction.
+If the length of the target area is larger than the length of the source,
+then spare space within the target area is padded with the fill character.
+This leaving variant of the standard, non-leaving descriptor method
+differs in that this operation may cause the string descriptor's heap
+buffer to be reallocated in order to accommodate the new data. As a
+result, MaxLength() and Ptr() may return different values afterwards,
+and any existing raw pointers to into the descriptor data may be
+invalidated.
+@param aString     A pointer to a source memory location.
+@param aLength     The length of data to be copied. If this is greater than the
+width of the target area, then the length of data copied is
+limited to the width.
+@param aWidth      The width of the target area. If this has the specific negative
+value KDefaultJustifyWidth, then the width is
+re-set to the length of the data source.
+@param aAlignment The alignment of the data within the target area.
+@param aFill       The fill character used to pad the target area.
+@leave KErrNoMemory if the underlying buffer needs to be
+grown and there are insufficient resources to do so
+@panic USER 11  if aWidth has a negative value other than KDefaultJustifyWidth.
+@panic USER 17  if aLength is negative.
+*/
+EXPORT_C void LString16:: AppendJustifyL(const wchar_t* aWideCharStr,TInt aLength,TInt aWidth,TAlign anAlignment,TChar aFill)
+	{
+	LString16::AppendJustifyL(reinterpret_cast<const TUint16*>(aWideCharStr),aLength, aWidth,anAlignment,aFill);
+	}
+//eof