Added some more test cases for `vis`ing and `unvis`ing
strings, and a test case that walks/checks a directory with
filenames that require encoding. Had to change Path() to account
for possible errors Unvis() could return. Refactored Vis()/Unvis() into
go-mtree tar functionality as well.
Signed-off-by: Stephen Chung <schung@redhat.com>
when creating a manifest from, or validating, a stream like a tar
archive, it requires thinking about some of the functions differently
than walking a directory tree.
This is the beginning of allowing for such features.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
Setting up sibling and parent relationships for entries, so they can be
easier to walk.
Also, making "keyword=value" easier to parse. This helps filtering.
Both of these ready us for checking/validating a hierarchy.
Signed-off-by: Vincent Batts <vbatts@hashbangbash.com>
