git-note-review - mozsearch

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#! /bin/sh

# Copyright (C) 2015 The Qt Company Ltd.

# Contact: http://www.qt.io/licensing/

# You may use this file under the terms of the 3-clause BSD license.

# See the file LICENSE from this package for details.

force=false

remove=false

while test $# != 0; do

    case $1 in

        -f) force=true;;

        -r) remove=true;;

        -*) echo "Unrecognized option $1." >&2; exit 1;;

        *) break;;

    esac

    shift

done

if test -z "$2"; then

    cat >&2 <<EOF

Usage: $0 [-f] [-r] <user> <sha-1>...

git-note-review adds Reviewed-by: lines to the log messages of the

named commits. Commits can be specified as either as a single sha1 or

as a sha1_excl..sha1_incl range (see git rev-list).

If any <whatever>-by: tag with the specified <user> is found to be

already present in a given commit, the commit is skipped.

If -f is specified, the check whether the commits were already pushed

is omitted. This only makes sense if you are planning to make a forced

push.

If -r is specified, the named user's reviews are removed from the commits.

EOF

    exit 1

fi

GIT_DIR=$(git rev-parse --git-dir 2>/dev/null)

if [ -z "$GIT_DIR" ]; then

    echo >&2 "Not a git repository."

    exit 1

fi

cd "$GIT_DIR/.."

REF=$(git symbolic-ref HEAD 2>/dev/null)

if [ -z "$REF" ]; then

    echo >&2 "Not on a branch."

    exit 1

fi

if test -n "`git diff HEAD`" ; then

    echo "You have uncommited changes. Please commit or stash them first." >&2

    exit 1

fi

who=$1

shift

SHA1s=

firstSHA1=

fail=false

for j in "$@"; do

    if test -z "${j##*..*}"; then

        if ! jj=`git rev-list $j 2> /dev/null`; then

            echo "Cannot parse commit range $j." >&2

            fail=true

            continue

fi

        j=$jj

fi

    for ii in $j; do

        if ! i=`git rev-parse --short $ii 2> /dev/null`; then

            echo "Cannot parse commit id $ii." >&2

            fail=true

            continue

fi

        if test -n "`git rev-list -1 $i ^HEAD`"; then

            echo "Commit $i is not on current branch. Did you rebase it meanwhile?" >&2

            fail=true

            continue

fi

        git log -1 --pretty=%b $i | egrep -q -i "^[-[:alpha:]]+-by: *$who\$" && hit=true || hit=false

        if $hit && ! $remove; then

            echo "Commit $i already noted as reviewed by $who."

        elif ! $hit && $remove; then

            echo "Commit $i not noted as reviewed by $who."

        else

            if test -z "$firstSHA1"; then

                firstSHA1=`git rev-parse $i`

                SHA1s=$i

            else

                firstSHA1=`git merge-base $firstSHA1 $i`

                SHA1s="$SHA1s|$i"

fi

fi

    done

done

if $fail; then

    echo "Exiting due to fatal errors." >&2

    exit 1

fi

if test -z "$SHA1s"; then

    echo "No commits to change." >&2

    exit 0

fi

# This would be pretty much bullet-proof, but also a lot slower.

#if test -z "$(git rev-list -1 $firstSHA1 --not $(git for-each-ref --format='%(objectname)' refs/remotes/))"; then

#    echo "$firstSHA1 has already been pushed - cannot edit it." >&2

#    exit 1

#fi

# This should be Good Enough (TM), and it is rather fast.

if ! $force && test -n "$(git rev-list -1 $firstSHA1^..@{upstream})"; then

    echo "Commit `git rev-parse --short $firstSHA1` has already been pushed - cannot edit it." >&2

    exit 1

fi

if ! $remove; then

    script='s/^\\(Reviewed-by:\\) *\\(pending\\|tbd\\|TBD\\)\$/\\1 '"$who"'/;t nx

\${

/^[-[:alpha:]]\+:/!a\\

a\\

Reviewed-by: '"$who"'

:nx;n;b nx'

else

    script='/^[-[:alpha:]]\\+-by: *'"$who"'\$/d'

fi

git filter-branch --force --original refs/note-review-backup --msg-filter '

    if echo $GIT_COMMIT | egrep -q "^('"$SHA1s"')"; then

        sed "'"$script"'"

    else

cat

fi

' $firstSHA1^..$REF || exit 1

rm -rf $GIT_DIR/refs/note-review-backup # we have the reflog, so what