git-now

#!/bin/sh

PREFIX="from now"
MESSAGE="[${PREFIX}] `date +\"%Y/%m/%d %T\"`"
MAIN_BRANCH=${1:-master} # デフォルトは 'master'、第1引数で上書き可能

shift # 引数リストからメインブランチ名を除外

get_amend() {
    if [ -z `git log --pretty=oneline --no-color -1 | cut -d " " -f 2- | grep "^\[${PREFIX}]"` ]
    then
        return 1
    fi

    local added_files=`git diff --name-only --cached`
    for f1 in `git diff --name-only HEAD^ HEAD`
    do
        for f2 in $added_files
        do
            if [ $f1 == $f2 ]
            then
                return 1
            fi
        done
    done
    echo "--amend"
    return 1
}

if [ $# -eq 0 ]
then
    git add -u
    git commit -m "${MESSAGE}"
elif [ $1 == "--compact" ]
then
    git add -A
    AMEND=`get_amend`
    git commit $AMEND -m "${MESSAGE}"
elif [ $1 == "--recent" ]
then
    git add -A
    if [ -z "`git log --since=1.minute`" ]
    then
        git commit -m "${MESSAGE}"
    else
        git commit --amend -m "${MESSAGE}"
    fi
elif [ $1 == "--fixup" ]
then
    WORKING_BRANCH=`git branch -l | grep "*" | cut -d " " -f 2`
    if [ $WORKING_BRANCH == $MAIN_BRANCH ]
    then
        FIRST_NOW_COMMIT=`git log --pretty=oneline --no-color --grep="${PREFIX}" | tail -n 1 | cut -d " " -f 1`
    else
        FIRST_NOW_COMMIT=`git log $MAIN_BRANCH.. --pretty=oneline --no-color --grep="${PREFIX}" | tail -n 1 | cut -d " " -f 1`
    fi
    git reset ${FIRST_NOW_COMMIT}
    git add -A
    if [ $# -eq 2 ]
    then
        git commit --amend -m "$2"
    else
        git commit --amend
    fi
elif [ $1 != "--rebase" ]
then
    if [ $1 != "--all" ]
    then
        git add $@
    else
        git add -u
        git add .
    fi
    printf "${MESSAGE}\n\n%s" "`git diff --cached`" | git commit -F -
else
    FIRST_NOW_COMMIT=`git log $MAIN_BRANCH.. --pretty=oneline --no-color --grep="${PREFIX}" | tail -n 1 | cut -d " " -f 1`
    INITIAL_COMMIT=`git log $MAIN_BRANCH.. --pretty=oneline --no-color | tail -n 1 | cut -d " " -f 1`

    if [ ${FIRST_NOW_COMMIT} != ${INITIAL_COMMIT} ]
    then
        git rebase -i ${FIRST_NOW_COMMIT}^
    else
        WORKING_BRANCH=`git branch -l | grep "*" | cut -d " " -f 2`

        git checkout ${FIRST_NOW_COMMIT}
        git commit --amend
        git rebase --onto HEAD ${FIRST_NOW_COMMIT} ${WORKING_BRANCH}
    fi
fi

メインブランチ名を第一引数で指定できるようにする