DataWrapper< textchar > Class Template Reference

#include <DataWrapper.h>

Public Member Functions
	DataWrapper (VOS_Object *block, const WideString *str, int32 charOffset)
	DataWrapper (const DataWrapper< textchar > &copy)
DataWrapper< textchar > &	operator= (const DataWrapper< textchar > &copy)
	operator const textchar * ()
WideString::const_iterator	GetIteratorAt (int32 charOffset) const
void	ClearOffset ()
int32	CharOffsetToUTF16Offset (int32 charOffset) const
bool16	HasSurrogates () const
const WideString *	GetData () const

Detailed Description

template<>
class DataWrapper< textchar >

The specialized DataWrapper<textchar> object is used to hold text contained in the text system without making a copy. It has the pointer to the text, and also the ref-counted object that owns the data.

See Also

VOS_Object

VOSDiskPage

Member Function Documentation

int32 DataWrapper< textchar >::CharOffsetToUTF16Offset

(

int32

charOffset

)

const

convert the character offset into a UTF16 buffer offset. Will return the offset when there are no surrogates.

Parameters

charOffset

is the character offset.

Returns

the number of UTF16 chars that the offset is equivalent to.

void DataWrapper< textchar >::ClearOffset ( )

inline

Clear the offset contained in this object. The offset isn't really used, so this function is pretty much useless. Will be removed.

const WideString* DataWrapper< textchar >::GetData ( ) const

inline

Accessor for the underlying string data.

WideString::const_iterator DataWrapper< textchar >::GetIteratorAt

(

int32

charOffset

)

const

convert this DataWrapper<textchar> into a WideStringIterator for walking over the text using iterator semantics.

See Also

ITextIterator

Parameters

charOffset

is the offset within this data to start iterating from.

Returns

the iterator.

bool16 DataWrapper< textchar >::HasSurrogates ( ) const

inline

Does the current data contain surrogate characters (32bit unicode values encoded using UTF16).

Returns

kTrue if the buffer has multi-word unicode values.

DataWrapper< textchar >::operator const textchar * ( )

inline

cast operator for this textchar version of DataWrapper – get a pointer to the data. fCharOffset is actually unused at this time, and is only set by the constructor.

Returns

a pointer to the text data.