tree f0244feec1ad7e758c9b56f214de2f5214e6a29a
parent 5768d3d9769c37ede68efa2f7df98bb146881e62
author Mark Salyzyn <salyzyn@google.com> 1492035084 -0700
committer Mark Salyzyn <salyzyn@google.com> 1492199766 -0700

liblog: allow event tags to include some punctuations

event_log_tag parser complains about a period (.) in the name,
we would consider such an enhancement to the tag names possible.
I expect we would want to be able to support alphanumerics,
underscore (_), period (.), minus (-), at (@) and comma (,) for
starters as they are present in the other text log buffer tags.

We introduce a local endOfTag function that is used during parsing and
during android_lookupEventTagNum for submitting new tags.  This
function caused us to enforce const char more closely.  By filtering
in both places we resolve an issue that could have plagued us if
garbage requests were made.

Test: gTest liblog-unit-tests, logd-unit-tests & logcat-unit-tests
Bug: 31456426
Change-Id: I596b8706e843719ddac07ec40e1cd2875c214bed