bin/get-fixes-pick-list.sh

   1 #!/bin/sh
   2
   3 # Script for generating a list of candidates [referenced by a Fixes tag] for
   4 # cherry-picking to a stable branch
   5 #
   6 # Usage examples:
   7 #
   8 # $ bin/get-fixes-pick-list.sh
   9 # $ bin/get-fixes-pick-list.sh > picklist
  10 # $ bin/get-fixes-pick-list.sh | tee picklist
  11
  12 # Use the last branchpoint as our limit for the search
  13 latest_branchpoint=`git merge-base origin/master HEAD`
  14
  15 # List all the commits between day 1 and the branch point...
  16 git log --reverse --pretty=%H $latest_branchpoint > already_landed
  17
  18 # ... and the ones cherry-picked.
  19 git log --reverse --pretty=medium --grep="cherry picked from commit" $latest_branchpoint..HEAD |\
  20         grep "cherry picked from commit" |\
  21         sed -e 's/^[[:space:]]*(cherry picked from commit[[:space:]]*//' -e 's/)//'  > already_picked
  22
  23 # Grep for commits with Fixes tag
  24 git log --reverse --pretty=%H -i --grep="fixes:" $latest_branchpoint..origin/master |\
  25 while read sha
  26 do
  27         # Check to see whether the patch is on the ignore list ...
  28         if [ -f bin/.cherry-ignore ] ; then
  29                 if grep -q ^$sha bin/.cherry-ignore ; then
  30                         continue
  31                 fi
  32         fi
  33
  34         # Skip if it has been already cherry-picked.
  35         if grep -q ^$sha already_picked ; then
  36                 continue
  37         fi
  38
  39         # Place every "fixes:" tag on its own line and join with the next word
  40         # on its line or a later one.
  41         fixes=`git show --pretty=medium -s $sha | tr -d "\n" | sed -e 's/fixes:[[:space:]]*/\nfixes:/Ig' | grep "fixes:" | sed -e 's/\(fixes:[a-zA-Z0-9]*\).*$/\1/'`
  42
  43         # For each one try to extract the tag
  44         fixes_count=`echo "$fixes" | wc -l`
  45         warn=`(test $fixes_count -gt 1 && echo $fixes_count) || echo 0`
  46         while [ $fixes_count -gt 0 ] ; do
  47                 # Treat only the current line
  48                 id=`echo "$fixes" | tail -n $fixes_count | head -n 1 | cut -d : -f 2`
  49                 fixes_count=$(($fixes_count-1))
  50
  51                 # Bail out if we cannot find suitable id.
  52                 # Any specific validation the $id is valid and not some junk, is
  53                 # implied with the follow up code
  54                 if [ "x$id" = x ] ; then
  55                         continue
  56                 fi
  57
  58                 # Check if the offending commit is in branch.
  59
  60                 # Be that cherry-picked ...
  61                 # ... or landed before the branchpoint.
  62                 if grep -q ^$id already_picked ||
  63                    grep -q ^$id already_landed ; then
  64
  65                         printf "Commit \"%s\" fixes %s\n" \
  66                                "`git log -n1 --pretty=oneline $sha`" \
  67                                "$id"
  68                         warn=$(($warn-1))
  69                 fi
  70
  71         done
  72
  73         if [ $warn -gt 0 ] ; then
  74                 printf "WARNING: Commit \"%s\" has more than one Fixes tag\n" \
  75                        "`git log -n1 --pretty=oneline $sha`"
  76         fi
  77
  78 done
  79
  80 rm -f already_picked
  81 rm -f already_landed