scripts/git-review at main · okurz/scripts · GitHub

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#!/bin/sh -e
# Review commits added since the upstream base, oldest first, one commit per screen.
#
# git review            step through commits one by one (Enter=next, p=prev, N=jump, a=rest, m=merges, q=quit)
# git review -l         numbered summary of the commits, no diff
# git review -s         numbered summary with per-commit diffstat
# git review -p         whole stream in one pager (git log --reverse -p)
# git review -n 3       show commit #3 with patch
# git review <range>    any git range, e.g. origin/main..feature, HEAD~3.., v1.2..

mode=step
range=
target=
rev_opts=--no-merges
while test $# -gt 0; do
    case $1 in
        -h | --help) sed -n '4,9p' "$0" | sed 's/^# \{0,1\}//'; exit 0 ;;
        -l) mode=list; shift ;;
        -s) mode=stat; shift ;;
        -p) mode=stream; shift ;;
        -n) mode=show; target=$2; shift 2 ;;
        --merges) rev_opts=; shift ;;
        *) range=$1; shift ;;
    esac
done

test -n "$range" || range="$(git-upstream-base)..HEAD"
commits=$(git rev-list --reverse $rev_opts "$range")
test -n "$commits" || { echo "Nothing to review in $range"; exit 0; }
total=$(printf '%s\n' "$commits" | wc -l | tr -d ' ')

pager=${REVIEW_PAGER:-}
if test -z "$pager"; then
    # shellcheck disable=SC2209 # the value is a pager command line, not command output
    if test -t 1; then pager='less -F -X -R'; else pager=cat; fi
fi
case $pager in *less*) color=always ;; *) color=auto ;; esac

nth() { printf '%s\n' "$commits" | sed -n "$1p"; }

view() {
    {
        printf '=== commit %d/%d ===\n' "$1" "$total"
        git show --format=fuller --stat -p --color=$color "$(nth "$1")"
    } | $pager
}

if test "$mode" = stat; then flags='--stat'; else flags=''; fi

case $mode in
    list | stat)
        i=1
        for sha in $commits; do
            printf '%2d. ' "$i"
            git show --no-patch --format='%h %s' $flags "$sha"
            i=$((i + 1))
        done
        exit 0
        ;;
    stream) git log --reverse -p $rev_opts --color=$color "$range" | $pager; exit 0 ;;
    show)
        if test -z "$target"; then echo "-n needs a commit number"; exit 1; fi
        if test "$target" -lt 1 || test "$target" -gt "$total"; then
            echo "commit #$target is outside 1..$total"; exit 1
        fi
        view "$target"
        exit 0
        ;;
esac

i=1
while :; do
    view "$i"
    if test "$i" -ge "$total"; then break; fi
    printf 'commit %d/%d  Enter=next p=prev N=jump a=rest m=merges q=quit: ' "$i" "$total"
    ans=
    if test -t 0; then IFS= read -r ans </dev/tty || break; else break; fi
    case $ans in
        q | Q) break ;;
        a | A)
            j=$i
            while test "$j" -le "$total"; do
                view "$j"
                j=$((j + 1))
            done
            break ;;
        m | M)
            if test -n "$rev_opts"; then rev_opts=; else rev_opts=--no-merges; fi
            commits=$(git rev-list --reverse $rev_opts "$range")
            total=$(printf '%s\n' "$commits" | wc -l | tr -d ' ')
            i=1 ;;
        p | P) if test "$i" -gt 1; then i=$((i - 1)); fi ;;
        '') i=$((i + 1)) ;;
        *[0-9])
            if test "$ans" -ge 1 && test "$ans" -le "$total"; then i=$ans; fi
            ;;
    esac
done