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compare: always prefix `git status` output with manifest-rev 

It's not unusual to make "quick and dirty", temporary changes in a git
repo that is on the manifest: either add some untracked files or create
a branch. As expected, this makes the repository show in `west
compare`. If such repos and the manifest repo are the only repos
appearing in the `west compare` output, then no manifest-rev + HEAD
banner ever appeared. When no banner ever appears it's really not
obvious which repos are on the manifest-rev vs not. In other words: the
main `west compare` feature is defeated.

Clear this doubt by always showing the banner, even when `HEAD` and
`manifest-rev` are the same. See sample output below.

I think the original design idea was to follow diff's "spirit" not to
show anything that's identical and to save as many lines as
possible. However I don't think it works in this particular case because
invoking `git status` for a repo _without_ showing where its HEAD is at
is way too subtle, _especially_ when there is no other repo with a
banner to provide a comparison point and some contrast. Explicitly and
consistently prefixing every `git status` output with a manifest-rev
banner is much more clear and obvious.

Moreover, `git status` output is relatively verbose already so always
prefixing it with a 2 lines long banner makes negligible difference to
the total.

Before:
```
$ west compare

=== hal_xtensa (modules/hal/xtensa):
--- status:
    On branch somebranch
    nothing to commit, working tree clean
```

After:
```
$ west compare

=== hal_xtensa (modules/hal/xtensa):
--- manifest-rev: 41a631d4aeee (somebranch, upstream/master) cmake: enable using SOC_TOOLCHAIN_NAME ...
            HEAD: 41a631d4aeee (somebranch, upstream/master) cmake: enable using SOC_TOOLCHAIN_NAME ...
--- status:
    On branch somebranch
    nothing to commit, working tree clean
```
Signed-off-by: Marc Herbert <marc.herbert@intel.com>
This commit is contained in:
Marc Herbert 2023-06-23 18:13:37 +00:00 committed by Martí Bolívar
parent b7e091d2e9
commit 98800b3d9a
1 changed files with 3 additions and 5 deletions
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4
src/west/app/project.py
View File

@ -713,8 +713,7 @@ class Compare(_ProjectCommand):
def print_rev_info(self, project):
# For non-manifest repositories, print HEAD's and
# manifest-rev's SHAs and commit titles, but only if they are
# different.
# manifest-rev's SHAs and commit titles.
#
# We force git not to print in color so west's colored
# banner() separators stand out more in the output.
@ -738,7 +737,6 @@ class Compare(_ProjectCommand):
head_info = rev_info('HEAD')
# If manifest-rev is missing, we already failed earlier.
manifest_rev_info = rev_info('manifest-rev')
if head_info != manifest_rev_info:
self.small_banner(f'manifest-rev: {manifest_rev_info}')
self.inf(f' HEAD: {head_info}')