Emergeでパッケージの一覧を取得するシェルスクリプト

elist

#!/usr/bin/env bash

# shellcheck source=/dev/null
source /dev/stdin < <(curl -sL "https://raw.githubusercontent.com/Hayao0819/FasBashLib/26e244d6f3839bcf159787dfd3e230df39e4500c/fasbashlib.sh")
Fsblib.RequireLib "BetterShell" "ParseArg" "Ini" "Emerge" "Array"


# Initial variable
SpecifiedRepo=()
#PrintRepoName=false
Command="None"

HelpMsg(){
    echo "Usage: elist [option] [command] [args]"
    echo "A simple tool to print package list"
    echo
    echo "Options:"
    echo "  -r, --repo [repo1,repo2 ...]"
    echo "                  Print only specified repository (for all)"
    #echo "  -n, --reponame  Print repository name"
    echo "  -h, --help      Print this help message and exit"
    echo
    echo "Commands:"
    echo "  all             Print all available packages"
    echo "  instaled        Print all installed packages"
    echo "  world           Print all world packages"
}

# Parse arguments
ParseArg SHORT="r:nh" LONG="repo:,reponame,help" -- "${@}" || exit 1
eval set -- "${OPTRET[*]}"
unset OPTRET

while true; do
    case "${1}" in
        -r | --repo)
            SpecifiedRepo+=("$2")
            shift 2
            ;;
        -n | --reponame)
            #PrintRepoName=true
            shift 1
            ;;
        -h | --help)
            HelpMsg
            exit 0
            ;;
        --)
            shift 1
            break
            ;;
        *)
            Msg.Error "Argument exception error '${1}'"
            Msg.Error "Please report this error to the developer." 1
            ;;
    esac
done
Command="${1-"$Command"}"

case "$Command" in
    "all")
        if (( "$(Array.Length SpecifiedRepo)" == 0 )); then
            Em.GetAllPkgList
        else
            Array.ForEach SpecifiedRepo Em.GetRepoPkgList "{}"
        fi
        ;;
    "installed")
        Em.GetInstalledPkgList
        ;;
    "world")
        Em.GetWorldPkgList
        ;;
    "None")
        Msg.Err "Unknown error."
        exit 1
esac