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commands: add grep #678

Merged
merged 4 commits into from
Aug 31, 2023
Merged

commands: add grep #678

merged 4 commits into from
Aug 31, 2023

Commits on Aug 31, 2023

  1. WestCommand: expand the subprocess interface 

    The WestCommand API for running subprocesses is OK, but
is missing some useful features; add them now:

- The current recommendation in the subprocess module is
  to use subprocess.run(), so add a helper for doing that
  since it's missing. (The name asymmetry is because
  there is already a WestCommand.run() claimed.)

- Allow subprocess invocations to take any kwargs we want

Signed-off-by: Martí Bolívar <mbolivar@amperecomputing.com>
    @mbolivar-ampere
    mbolivar-ampere committed Aug 31, 2023
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  2. WestCommand: extend print helpers with end kwarg 

    This is useful when we want to be able to control whether a newline is
appended or not. The die() method is intentionally omitted: this is a
"scream and exit the process" method, and always flushing any
line-buffered I/O makes sense to enforce in this context.

Signed-off-by: Martí Bolívar <mbolivar@amperecomputing.com>
    @mbolivar-ampere
    mbolivar-ampere committed Aug 31, 2023
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  3. commands: add grep 

    This has been requested various times. I haven't done it because 'west
forall -c "git grep"' has been a reasonable workaround for me, and I
never had time or need to think about what an ergonomic alternative
might look like.

That's changed now and I wanted something that would only print output
for projects where a result was found, similarly to the way "west
diff" only prints for projects with nonempty "git diff", etc.

Add a "grep" command that does similar, defaulting to use of "git
grep" to get the job done. Also support (my favorite) ripgrep and
plain "grep --recursive". See the GREP_EPILOG variable in the patch
for detailed usage information.

Signed-off-by: Martí Bolívar <mbolivar@amperecomputing.com>
    @mbolivar-ampere
    mbolivar-ampere committed Aug 31, 2023
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  4. tests: add basic test for grep command 

    Get some minimal coverage.

Signed-off-by: Martí Bolívar <mbolivar@amperecomputing.com>
    @mbolivar-ampere
    mbolivar-ampere committed Aug 31, 2023
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