GRADUATED

   1 #!/bin/sh
   2
   3 base= ignore_file=
   4 while :
   5 do
   6         case "$1" in
   7         --base=*)
   8                 base=${1#*=} ;;
   9         --ignore=*)
  10                 ignore_file=${1#*=} ;;
  11         -*)
  12                 echo >&2 "Eh? $1"
  13                 exit 1 ;;
  14         *)
  15                 break ;;
  16         esac
  17         shift
  18 done
  19
  20 if test -z "$base"
  21 then
  22         describe=$(git describe "master")
  23         base=$(expr "$describe" : '\(.*\)-\([0-9]*\)-g[0-9a-f]*$') ||
  24         base="$describe"
  25
  26         git rev-parse --verify "$base^0" >/dev/null 2>/dev/null || {
  27             echo >&2 "Eh? where is your base?"
  28             exit 1
  29         }
  30 fi
  31
  32 topics= leftover= dothis=
  33 LF='
  34 '
  35
  36 ignores=
  37 if test -f "$ignore_file"
  38 then
  39         while read ignore rest
  40         do
  41                 test -n "$ignore" &&
  42                 if ignore=$(git rev-parse -q --verify $ignore)
  43                 then
  44                         :
  45                 elif ignore=$(expr "$rest" : '.* \([0-9a-f]\{40\}\)$')
  46                 then
  47                         :
  48                 else
  49                         continue
  50                 fi
  51                 ignores="$ignores$ignore "
  52         done <"$ignore_file"
  53 fi
  54
  55 defer () {
  56         leftover="$leftover$1$LF"
  57 }
  58
  59 dothis () {
  60         dothis="$1$LF$LF$dothis"
  61 }
  62
  63 one_topic () {
  64         topic="$2" tip="$3" date="$4" merged="$1"
  65         case " $topics" in *" $topic "*) return ;; esac
  66         topics="$topics$topic "
  67
  68         contam_count=$(git rev-list "maint..$tip" | grep -F "$merges_to_master" | wc -l)
  69         if test "$contam_count" != 0
  70         then
  71                 echo "**** forked from master $topic ****"
  72                 return
  73         fi
  74
  75         maint_count=$(git rev-list "maint..$tip" | wc -l)
  76         if test "$maint_count" = 0
  77         then
  78                 echo "**** already merged $topic ****"
  79                 return ;# already merged
  80         fi
  81
  82         ready=no label=
  83
  84         master_count=$(git rev-list "$base..$tip" | wc -l)
  85         if test $maint_count -le $master_count
  86         then
  87                 mergeable=yes
  88         else
  89                 mergeable=no
  90         fi
  91
  92         if current=$(git rev-parse --verify -q "$topic^0") &&
  93            test "$current" = "$tip"
  94         then
  95                 ready=yes
  96                 label="$topic"
  97         elif test -z "$current"
  98         then
  99                 ready=yes
 100                 label="$tip"
 101         fi
 102
 103         case "$mergeable,$ready" in
 104         no,*)
 105                 comment="# $topic: not mergeable ($master_count vs $maint_count)"
 106                 comment="$comment$LF# $merged"
 107                 defer "$comment"
 108                 ;;
 109         yes,no)
 110                 topic_count=$(git rev-list "$base..$current" | wc -l)
 111
 112                 comment="# $topic: not ready ($master_count vs $topic_count)"
 113                 comment="$comment$LF# $merged"
 114                 defer "$comment"
 115                 ;;
 116         yes,yes)
 117                 insn="$label"
 118                 if test $maint_count = $master_count
 119                 then
 120                         insn="$insn # $master_count ($date) $merged"
 121                 else
 122                         insn="$insn # $maint_count/$master_count ($date) $merged"
 123                 fi
 124                 insn="$insn$LF$(git log --oneline "maint..$tip" | sed -e "s/^/# /")"
 125                 dothis "$insn"
 126                 ;;
 127         esac
 128 }
 129
 130 merges_to_master="$(git rev-list --merges $base..master)"
 131
 132 git log --first-parent --min-parents=2 --max-parents=2 \
 133         --format='%ci %H %P %s' "$base..master" | {
 134         while read date time zone commit parent tip subject
 135         do
 136                 case " $ignores" in *" $commit "*) continue ;; esac
 137                 topic=$(expr "$subject" : "Merge branch '\(.*\)'$") || {
 138                         defer "# ignoring $commit ($subject)"
 139                         continue
 140                 }
 141                 one_topic "$commit" "$topic" "$tip" "$date"
 142         done
 143         echo "$leftover"
 144         echo "$dothis"
 145 }