ML

   1 #!/bin/sh
   2 # Merge later...
   3
   4 : ${MASTER:=master}
   5
   6 : "${target:=maint}" "${here:=$MASTER}"
   7
   8 # Read from RelNotes and find mergeable topics
   9 search_topics () {
  10         tmp=/tmp/ML.$$
  11         trap 'rm -f "$tmp"' 0
  12         git rev-list --parents --first-parent $target..$here >"$tmp"
  13
  14         x40='[0-9a-f]'
  15         x40="$x40$x40$x40$x40$x40"
  16         x40="$x40$x40$x40$x40$x40$x40$x40$x40"
  17         sed -n -e 's/^   (merge \([0-9a-f]*\) \([^ ]*\) later to maint.*/\1 \2/p' |
  18         while read sha1 topic
  19         do
  20                 if ! full_sha1=$(git rev-parse --verify "$sha1")
  21                 then
  22                         echo >&2 "Not found: $sha1 $topic"
  23                         continue
  24                 fi
  25
  26                 comment=
  27                 if ! git show-ref --quiet --verify "refs/heads/$topic"
  28                 then
  29                         comment="$topic gone"
  30                         tip=$full_sha1 topic=$sha1
  31                 elif tip=$(git rev-parse --verify "refs/heads/$topic") &&
  32                      test "$tip" != "$full_sha1"
  33                 then
  34                         echo >&2 "$topic # $tip moved from $sha1"
  35                         continue
  36                 fi
  37
  38                 ago= lg=-1
  39                 fp=$(
  40                     sed -ne "s/^\($x40\) $x40 $tip"'$/\1/p' "$tmp"
  41                 ) &&
  42                 test -n "$fp" &&
  43                 ago=$(
  44                     git show -s --format='%ad' --date=short $fp
  45                 ) &&
  46                 lg=$(git log --oneline $target..$tip | wc -l)
  47
  48                 if test $lg = -1
  49                 then
  50                         echo "# $topic not yet merged to $here"
  51                 elif test $lg != 0
  52                 then
  53                         echo "$topic # $lg${ago+ ($ago)}${comment+ $comment}"
  54                 else
  55                         echo "# $topic already merged${ago+ ($ago)}${comment+ $comment}"
  56                 fi
  57         done
  58 }
  59
  60 while   case "$#,$1" in
  61         0,*)
  62                 break ;;
  63         *,-t)
  64                 target=${2?"-t target???"}
  65                 git show-ref --quiet --verify "refs/heads/$target" || {
  66                         echo >&2 "$target: no such branch"
  67                         exit 1
  68                 }
  69                 shift ;;
  70         *)
  71                 break ;;
  72         esac
  73 do
  74         shift
  75 done
  76
  77 case $# in
  78 0)
  79         search_topics
  80         exit $?
  81         ;;
  82 esac
  83
  84 for topic
  85 do
  86         sha1=$(git rev-parse --short $topic)
  87         echo "   (merge $sha1 $topic later to maint)."
  88 done
  89