git-fzf

#!/usr/bin/env bash
set -e

if ! command -v fzf &>/dev/null; then
    echo >&2 '*** you need install fzf cmd ***'
    exit 1
fi

export FZF_DEFAULT_OPTS='--exact --layout=reverse --info=inline'

if [[ -n ${TMUX} ]] && command -v fzf-tmux &>/dev/null; then
    fzf() {
        fzf-tmux -p -w 100% -h 80%
    }
else
    export FZF_DEFAULT_OPTS="${FZF_DEFAULT_OPTS} --height=50%"
fi

git-fzf-branch() {
    git branch "$@"
}

git-fzf-branch-parse() {
    cut -c3-
}

git-fzf-log() {
    git log --graph --oneline --decorate=full "$@"
}

git-fzf-log-parse() {
    grep -o '[[:xdigit:]]\+' | head -n1
}

git-fzf-reflog() {
    git reflog "$@"
}

git-fzf-reflog-parse() {
    grep -o '^[[:xdigit:]]\+'
}

git-fzf-status() {
    git status --short "$@"
}

git-fzf-status-parse() {
    cut -c3-
}

git-fzf-tag() {
    git for-each-ref \
        --sort='-creatordate' \
        --format='%(creatordate:short)  %(objectname:short)  %(refname:short)' \
        refs/tags "$@"
}

git-fzf-tag-parse() {
    awk '{print$3}'
}

git-fzf-help() {
    cat <<EOT
usage:
$(
for k in "${!cmds[@]}"; do
    echo "  git-fzf ${k} ${cmds[${k}]}"
done
)
EOT
}

declare -A cmds=(
    [help]=''
    [branch]='[opts...]'
    [log]='[opts...]'
    [reflog]='[opts...]'
    [status]='[opts...]'
    [tag]='[opts...]'
)

cmd=$1

if ! [[ ${cmd} ]] || ! [[ ${cmds[${cmd}]} ]]; then
    if [[ ${cmd} ]]; then
        echo >&2 "invalid command: ${cmd}"
    fi
    git-fzf-help >&2
    exit 1
fi

shift

"git-fzf-${cmd}" "$@" | fzf | "git-fzf-${cmd}-parse"