21-Mar-2014 02:39, Walter Bright пишет:
Currently we do it by throwing a UTFException. This has problems:
1. about anything that deals with UTF cannot be made nothrow
2. turns innocuous errors into major problems, such as DOS attack vectors
http://en.wikipedia.org/wiki/UTF-8#Invalid_byte_sequences
One option to fix this is to treat invalid sequences as:
1. the .init value (0xFF for UTF8, 0xFFFF for UTF16 and UTF32)
If we talk decoding then only dchar is relevant.
If transcoding then, having 0xFF makes for broken UTF-8 encoding so I
see no sense in going for it.
2. U+FFFD
Also has the benefit of being recommended by the standard specifically
for the case of substitution for bad encoding.
Details:
https://d.puremagic.com/issues/show_bug.cgi?id=12113
I kinda like option 1.
Not enough of an argument ;)
--
Dmitry Olshansky
