[PATCH] D59503: [llvm-ar] Support N [count] modifier

[Jordan Rupprecht via Phabricator via llvm-commits]

rupprecht created this revision.
rupprecht added reviewers: ruiu, MaskRay.
Herald added subscribers: llvm-commits, jdoerfert.
Herald added a project: LLVM.

GNU ar supports the 'N' count modifier for the extract (x) and delete (d) operations. When an archive contains multiple members with the same name, this can be used to extract (or delete) them individually. For example:

  $ llvm-ar t archive.a
  foo
  foo
  $ llvm-ar x archive.a
  -> Writes foo twice, overwriting it the second time :( :(
  $ llvm-ar xN 1 archive.a foo && mv foo foo.1
  $ llvm-ar xN 2 archive.a foo && mv foo foo.2
  -> Write foo twice, renaming it in between invocations to preserve all versions


Repository:
  rG LLVM Github Monorepo

https://reviews.llvm.org/D59503

Files:
  llvm/test/tools/llvm-ar/count.test
  llvm/tools/llvm-ar/llvm-ar.cpp

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