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Add total count and iteration count to forall environment

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For long-running forall commands sometimes it's useful to know which
iteration is currently running. Add REPO_I and REPO_COUNT environment
variables to reflect the current iteration count as well as the total
number of iterations so that the user can build simple status
indicators.

Example:

    $ repo forall -c 'echo $REPO_I / $REPO_COUNT; git gc'
    1 / 579
    Counting objects: 41, done.
    Delta compression using up to 8 threads.
    Compressing objects: 100% (19/19), done.
    Writing objects: 100% (41/41), done.
    Total 41 (delta 21), reused 41 (delta 21)
    2 / 579
    Counting objects: 53410, done.
    Delta compression using up to 8 threads.
    Compressing objects: 100% (10423/10423), done.
    Writing objects: 100% (53410/53410), done.
    Total 53410 (delta 42513), reused 53410 (delta 42513)
    3 / 579
    ...

Change-Id: I9f28b0d8b7debe423eed3b4bc1198b23e40c0c50
Signed-off-by: Mitchel Humpherys <mitchelh@codeaurora.org>
This commit is contained in:
Mitchel Humpherys 2014-03-31 11:36:56 -07:00
parent 26c45a7958
commit e81bc030bb
1 changed files with 10 additions and 1 deletions
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11
subcmds/forall.py
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@ -87,6 +87,12 @@ revision to a locally executed git command, use REPO_LREV.
REPO_RREV is the name of the revision from the manifest, exactly
as written in the manifest.
REPO_COUNT is the total number of projects being iterated.
REPO_I is the current (1-based) iteration count. Can be used in
conjunction with REPO_COUNT to add a simple progress indicator to your
command.
REPO__* are any extra environment variables, specified by the
"annotation" element under any project element. This can be useful
for differentiating trees based on user-specific criteria, or simply
@ -178,7 +184,9 @@ without iterating through the remaining projects.
else:
projects = self.FindProjects(args)
for project in projects:
os.environ['REPO_COUNT'] = str(len(projects))
for (cnt, project) in enumerate(projects):
env = os.environ.copy()
def setenv(name, val):
if val is None:
@ -190,6 +198,7 @@ without iterating through the remaining projects.
setenv('REPO_REMOTE', project.remote.name)
setenv('REPO_LREV', project.GetRevisionId())
setenv('REPO_RREV', project.revisionExpr)
setenv('REPO_I', str(cnt + 1))
for a in project.annotations:
setenv("REPO__%s" % (a.name), a.value)