tree c927415df288d9bf9076e758835db53cc633597d
parent 3fc157285cb61d6a4faa55dc4f011fb94d598c20
author Mike Frysinger <vapier@google.com> 1566882659 -0400
committer Mike Frysinger <vapier@google.com> 1566964451 +0000

split out cli validation from execution

A common pattern in our subcommands is to verify the arguments &
options before executing things.  For some subcommands, that check
stage is quite long which makes the execution function even bigger.
Lets split that logic out of the execute phase so it's easier to
manage these.

This is most noticeable in the sync subcommand whose Execute func
is quite large, and the option checking makes up ~15% of it.

The manifest command's Execute can be simplified significantly as
the optparse configuration always sets output_file to a string.

Change-Id: I7097847ff040e831345e63de6b467ee17609990e
Reviewed-on: https://gerrit-review.googlesource.com/c/git-repo/+/234834
Reviewed-by: David Pursehouse <dpursehouse@collab.net>
Tested-by: Mike Frysinger <vapier@google.com>