logger_entry has a hdr_size field meant for backwards compatibility,
however there are a few checks that expect it to be a specific size.
More problematically, it has a variable length array element, msg[0]
at the end, that would be incorrect if the header size was not kept
static.
This change fixes up those issues to facilitate future additions.
Bug: 119867234
Test: logging works with extended size headers, logging unit tests
Test: newly added unit tests with extended size header
Merged-In: I14b2b0855d219d11f374b53a5aa8e05cd6a65eef
Change-Id: I14b2b0855d219d11f374b53a5aa8e05cd6a65eef
(cherry picked from commit d3ecc66b9c)
This started as a change to use mbrtowc() instead of
utf8_character_length() as mbrtowc() does everything that
utf8_character_length() intends to do, but is a libc function. The
change was further intended to add unit tests to ensure that these
functions operate as intended.
It turns out that utf8_character_length() returned an error for the
utf8 characters that I tested, so this also has the side effect of
allowing valid utf8 characters to be printed in the 'printable' log
format, which was the original intention.
Also, print the binary data as hex instead of octal, since it is a
more suitable choice.
Test: new unit tests, existing unit tests, logcat -v printable
Change-Id: I4cc95aee81519411ef47892ca74eb31117c972d2
