share/msysGit/check-literal-copies.sh

   1 #!/bin/sh
   2
   3 # This script will check for files that were literal copies in the
   4 # parents of the given commits, but are no literal copies currently
   5 # (ignoring those files that do no longer exist).
   6
   7 # Use it like this:
   8 #
   9 #       $0 $(git rev-list HEAD -- mingw/bin/gcc.exe)
  10 #
  11 # This would check that literal copies were maintained in all the commits
  12 # in the current branch that touched mingw/bin/gcc.exe.
  13
  14 for rev in "$@"
  15 do
  16         # Ignore initial commit
  17         git rev-parse -q --verify $rev^ > /dev/null || continue
  18
  19         for f in $(git diff --name-only --diff-filter=RDM $rev^!)
  20         do
  21                 test -f $f || continue
  22                 sha1=$(git rev-parse $rev^:$f)
  23                 matches="$(git ls-tree -r $rev^ | grep $sha1)"
  24                 test 1 -lt $(echo "$matches" | wc -l) && {
  25                         for f2 in $(echo "$matches" | sed "s/.* //")
  26                         do
  27                                 test -f $f2 || continue
  28                                 cmp $f $f2 || echo "$f != $f2"
  29                         done
  30                 }
  31         done
  32 done