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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 REPO_RREV is the name of the revision from the manifest, exactly
as written in the manifest. 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 REPO__* are any extra environment variables, specified by the
"annotation" element under any project element. This can be useful "annotation" element under any project element. This can be useful
for differentiating trees based on user-specific criteria, or simply for differentiating trees based on user-specific criteria, or simply
@ -178,7 +184,9 @@ without iterating through the remaining projects.
else: else:
projects = self.FindProjects(args) 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() env = os.environ.copy()
def setenv(name, val): def setenv(name, val):
if val is None: if val is None:
@ -190,6 +198,7 @@ without iterating through the remaining projects.
setenv('REPO_REMOTE', project.remote.name) setenv('REPO_REMOTE', project.remote.name)
setenv('REPO_LREV', project.GetRevisionId()) setenv('REPO_LREV', project.GetRevisionId())
setenv('REPO_RREV', project.revisionExpr) setenv('REPO_RREV', project.revisionExpr)
setenv('REPO_I', str(cnt + 1))
for a in project.annotations: for a in project.annotations:
setenv("REPO__%s" % (a.name), a.value) setenv("REPO__%s" % (a.name), a.value)