Utf32
Description
Container class containing UTF-32 platform-endian encoding.
@see Class Comments in <EsUnicodeEncoding> for usage examples.
Class Methods
None
Instance Methods
asUnicodeString:
Answer a new unicode string instance from the receiver.
If @repair is true, then invalid utf32 will be replaced with the unicode replacement character U+FFFD.
Examples:
'Grinning Face (U+1F600)'.
self assert: [(Utf32LE with: 16r1F600) asUnicodeString first name = 'GRINNING FACE'].
'Invalid UTF32-encoding'.
self assert: [[(Utf32LE with: 16rD800) asUnicodeString. false] on: Exception do: [:ex | ex exitWith: true]].
'Repaired invalid UTF8-encoding'.
self assert: [((Utf32LE with: 16rD800) asUnicodeString: true) = UnicodeScalar replacementCharacter asUnicodeString].
Arguments:
repair - <Boolean>
Answers:
<UnicodeString>
isValid
Answer true if the content of the container represents valid UTF-32 data
encoded in the endian type defined by the container.
Examples:
'Grinning Face (U+1F600) in platform endian'.
self assert: [
System bigEndian
ifTrue: [(Utf32 with: 16r1F600) isValid]
ifFalse: [(Utf32 with: 16r1F600) isValid]].
'Invalid because of isolated surrogate - 16rD800'.
self assert: [(Utf32LE with: 16r1F600 with: 16rD800) isValid not]
Answers:
<Boolean> true if valid, false if invalid
Last modified date: 01/18/2023