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         exit 1
  11
  12 top=$2
  13 [ "$top" ] || top=HEAD
  14
  15 linus=$3
  16 [ "$linus" ] || linus=origin/master
  17
  18 base=$(git merge-base "$linus" "$top")
  19
  20 git log --first-parent --reverse --pretty='format:%H %P' "$base".."$top" |
  21 while read m p1 p2
  22 do
  23         [ "$p1" = "$commit" ] && {
  24                 echo "Directly committed"
  25                 break
  26         }
  27         [ "$p2" ] ||
  28                 continue
  29         git rev-list $base..$p2 | grep -q "$commit" || continue
  30         branch=$(git show $m | sed -n "s/[      ]*Merge .*'\([^']*\)'\( of \([^ ]*\).*\)*$/\1|\3/p")
  31         tree=${branch##*|}
  32         branch=${branch%%|*}
  33         [ "$tree" ] || {
  34                 tree=${branch%%/*}
  35                 [ "$tree" = "quilt" ] && tree=${branch##*/}
  36                 echo "$tree"
  37                 break
  38         }
  39         echo "$tree#$branch"
  40         break
  41 done
  42
  43 exit 0