TUtf32Iterator Class Reference
Constructor & Destructor Documentation
TUtf32Iterator(const TText16 *, const TText16 *, TInt)
Construct iterator given UTF16 encoded byte array.
- panic
- EGdiPanic_InvalidInputParam Raised when array start if passed the array end.
Parameters
| const TText16 * aStart | Start address of the array. |
| const TText16 * aEnd | Address of the byte just beyond the end of the array. |
| TInt aOffset = 0 | Optional UTF16 offset into the array to initialise the current position to. |
Member Functions Documentation
AtEnd()
|
TBool
| AtEnd | ( | ) | const [inline] |
BeforeStart()
|
TBool
| BeforeStart | ( | ) | const [inline] |
CurrentPosition()
| const TText16 * | CurrentPosition | ( | ) | const |
Get()
|
TChar
| Get | ( | ) | const [inline] |
Get(TInt)
Returns the UTF32 char value at the offset specified. 0xFFFF may be returned for unpaired surrogate and noncharacters. Does not change the current position.
- panic
- EGdiPanic_OutOfText Raised when offset found to be outside the bounds of the original text array.
Parameters
| TInt offset | UTF16 offset from current iterator position to get UTF32 char form. |
GetThenNext()
Return the UTF32 value at the current position.
- panic
- EGdiPanic_EndOfText Raised when current iterator position is not valid.
GetThenPrev()
Return the UTF32 value at the current position.
- panic
- EGdiPanic_EndOfText Raised when current iterator position is not valid.
LengthToEnd()
Returns the number of remaining TText16 codes still ahead of the iterator.
LengthToStart()
|
TInt
| LengthToStart | ( | ) | const |
Returns the number of TText16 codes between the start point and its current position.
Next()
Moves the iterator forward to the next valid UTF32 character value.
- panic
- EGdiPanic_OutOfText Raised when there is no next position to move to.
Prev()
Moves the iterator backwards to the next valid UTF32 character value.
- panic
- EGdiPanic_OutOfText Raised when there is no next position to move to.
SetCurrentPosition(const TText16 *)
| void | SetCurrentPosition | ( | const TText16 * | | ) | |
SetPos(TInt)
Moves the iterator to the position specified by array start+offset.
- panic
- EGdiPanic_OutOfText Raised when there is no next position to move to.
Parameters
| TInt aOffset | UTF16 offset into the array to set the current position to. |
UTF16ToTChar(const TText16 *)
This routine takes an encoded UTF16 byte array and decodes the first character at the start of the array and returns it as a TChar. If the char is "not a char" character 0xFFFF results.
Parameters
| const TText16 * a | UTF16 byte array to be decoded. |
Member Data Documentation
TChar
iChar
UTF32 value of the character at the current iterator position
const TText16 * iCurrent
Address of current position in array
const TText16 * iEnd
Address of the first entry past the end of the array
const TText16 * iStart
Start address of the UTF16 array
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v1.0.