git.ozlabs.org Git - next-scripts/blob - find_branch

   1 #!/bin/bash
   2
   3 commit=$1
   4 [ "$commit" ] || {
   5         echo "$0: <commit id> [<top tag> [<linus branch>]]" 1>&2
   6         exit 1
   7 }
   8 commit=$(git rev-parse --verify "$commit")
   9 [ "$commit" ] || {
  10         echo "No such commit" 1>&2
  11         exit 1
  12 }
  13
  14 top=$2
  15 [ "$top" ] || top=HEAD
  16 tcommit=$(git rev-parse --verify "$top")
  17 [ "$tcommit" ] || {
  18         echo "Bad top tag" 1>&2
  19         exit 1
  20 }
  21
  22 linus=$3
  23 [ "$linus" ] || linus=origin/master
  24 lcommit=$(git rev-parse --verify "$linus")
  25 [ "$lcommit" ] || {
  26         echo "Bad linus branch" 1>&2
  27         exit 1
  28 }
  29
  30 base=$(git merge-base "$linus" "$top")
  31
  32 git log --first-parent --reverse --pretty='format:%H %P' "$base".."$top" |
  33 while read m p1 p2
  34 do
  35         [ "$p1" = "$commit" ] && {
  36                 git show -s --pretty="format:Commit:            %H%nAuthor:             %aN <%aE>%nAuthorDate:  %ad%nCommitter: %cN <%cE>%nCommitterDate:       %cd%nSubject:   %s" $p1
  37                 break
  38         }
  39         [ "$p2" ] ||
  40                 continue
  41         git rev-list $base..$p2 | grep -q "$commit" || continue
  42         git show -s --pretty="format:Commit:            %H%nAuthor:             %aN <%aE>%nAuthorDate:  %ad%nCommitter: %cN <%cE>%nCommitterDate:       %cd%nSubject:   %s" $m
  43         break
  44 done
  45
  46 exit 0