Add UTF8_CHK_SKIP() macro

This is a safer version of UTF8SKIP for use when the input could be
possibly malformed.  It uses strnlen() to not read past a NUL in the
input.  Since Perl adds NULs to the end of SV's, this will likely
prevent reading beyond the end of a buffer.

A still safer version could be written that doesn't look for just a NUL,
but any unexpected byte, and stops just before that.  I suspect that is
overkill, and since strnlen() can be very fast, I went with this
approach instead.  Nothing precludes adding another version that does
this full checking

0 files changed, 0 insertions, 0 deletions