Arch Linuxの最新のニュースをGUIで表示します

ArchNews.sh

#!/usr/bin/env bash
# shellcheck disable=SC2034

set -Eeu

#ArchNewsRSSURL="https://www.archlinux.jp/feeds/news.xml"
ArchNewsRSSURL="https://archlinux.org/feeds/news/"
CachePath="${XDG_STATE_HOME-"$HOME/.local/state"}/archnews.latest"
AutoStartPath="${XDG_CONFIG_HOME-"${HOME}/.config"}/autostart/archnews.desktop"
RSSXML=()
IgnoreCache=false
ShowMode="ZENITY"

FSBLIB_PATHLIST=(
    "/usr/lib/archnews.sh" 
    #"$HOME/Git/FasBashLib/fasbashlib.sh"
)

LoadLib(){
    for File in "${FSBLIB_PATHLIST[@]}"; do
        # shellcheck source=/dev/null
        [[ -e "$File" ]] && source "$File"
    done

    if [[ -z "${FSBLIB_VERSION-""}" ]]; then
        Msg.Err "Failed to load FasBashLib"
        exit 1
    fi

    if ! Array.Includes FSBLIB_LIBLIST "Parsrs"; then
        Msg.Err "FasBashLibをParsrsを含めてビルドしてください"
        exit 1
    fi
}

GetLatestNewsURL(){ PrintArray "${RSSXML[@]}" | grep "^/rss/channel/item/link.*" | URL.Path | head -n 1; }

GetNews(){
    local Line CurrentTitle CurrentLink InTarget=false
    while read -r Line; do
        case "$Line" in
            "/rss/channel/item/title "*)
                CurrentTitle="$(cut -d " " -f 2- <<< "$Line")"
                continue
                ;;
            "/rss/channel/item/link "*)
                CurrentLink="$(cut -d " " -f 2- <<< "$Line" | URL.Path)"
                if [[ "$CurrentLink" = "$1" ]]; then
                    InTarget=true
                    echo "$CurrentTitle"
                else
                    InTarget=false
                fi
                continue
                ;;
            "/rss/channel/item")
                InTarget=false
                continue
                ;;
            *)
                if [[ "$InTarget" = true ]]; then
                    cut -d " " -f 2- <<< "$Line"
                fi
                ;;
        esac
    done < <(PrintArray "${RSSXML[@]}" | grep "^/rss/channel/item.*")
}


FormatXML(){
    sed -e 's|\\n| |g' -e 's|\&lt;|<|g' -e 's|\&gt;|>|g' -e 's|\&amp;|&|g' -e 's|\&quot;|"|g' -e 's|\&apos;||g' | sed -e "s|<[^>]*>||g" | sed -e "s|lt;p>||g"
}


Main(){
    # XMLを解析して配列に格納
    ArrayAppend RSSXML < <(curl -sL "$ArchNewsRSSURL" | Parsrs.Xml)
    { (( "${#RSSXML[@]}" < 1 )) || [[ -z "${RSSXML[*]}" ]]; } && {
        Msg.Err "RSSの取得に失敗しました"
        exit 1
    }

    local LatestNewsURL
    LatestNewsURL="$(GetLatestNewsURL)"
    if [[ -z "$LatestNewsURL" ]]; then
        Msg.Err "最新のニュースの取得ができませんでした"
        exit 1
    fi

    if [[ -e $CachePath ]] && ! Bool "IgnoreCache" && [[ "$(cat "$CachePath")" = "$LatestNewsURL" ]]; then
        Msg.Info "最新のニュースは既に確認済みです"
        exit 0
    fi

    # キャッシュを作成
    echo "$LatestNewsURL" > "$CachePath"

    # 最新ニュースを取得
    local LatestNews=()
    ArrayAppend LatestNews < <(GetNews "$(GetLatestNewsURL)")

    # ニュースを出力
    case "${ShowMode^^}" in
        "CLI")
            echo "<${LatestNews[0]}>"
            echo "${LatestNews[1]}" | FormatXML
            echo "(Last update: ${LatestNews[4]}  By ${LatestNews[3]}"
            ;;
        "ZENITY")
            zenity --info \
                --title="ArchNews - ${LatestNews[0]}" \
                --text="$(FormatXML <<< "${LatestNews[1]}")"
            ;;
    esac
    return 0
}

LoadLib

ParseArg LONG="help,force,cli,gui,english,japanese,clean,startup" SHORT="hfcgej" -- "${@}"
eval set -- "${OPTRET[*]}"
while true; do
    case "${1-""}" in
        "-c" | "--cli")
            ShowMode="CLI"
            shift
            ;;
        "-g" | "--gui")
            ShowMode="ZENITY"
            shift 1
            ;;
        "-e" | "--english")
            ArchNewsRSSURL="https://archlinux.org/feeds/news/"
            shift 1
            ;;
        "-j" | "--japanese")
            ArchNewsRSSURL="https://www.archlinux.jp/feeds/news.xml"
            shift 1
            ;;
        "-h" | "--help")
            echo "Usage: $0 "
            echo "  -g, --gui       : GUIモード"
            echo "  -c, --cli       : CLIモード"
            echo "  -f , --force    : 強制的に表示"
            echo "  -h, --help      : ヘルプを表示"
            echo "  --clean         : 一時データを削除して終了"
            echo "  --startup       : スタートアップのオンオフ "
            exit 0
            ;;
        "-f" | "--force")
            IgnoreCache=true
            shift 1
            ;;
        "--clean")
            [[ -e "$CachePath" ]] && rm -f "$CachePath"
            exit 0
            ;;
        "--startup")
            if [[ -e "$AutoStartPath" ]]; then
                rm -f "$AutoStartPath"
                Msg.Info "Disable autostart"
                exit 0
            elif [[ -e "/usr/share/applications/show-archnews.desktop" ]]; then
                cp "/usr/share/applications/show-archnews.desktop" "$AutoStartPath"
                Msg.Info "Enable autostart"
                exit 0
            else
                Msg.Err "You must install ArchNews with pacman to enable autostart."
                exit 1
            fi
            shift 1
            ;;
        "--")
            shift 1 || true
            break
            ;;
        *)
            break
            ;;
    esac
done

Main

LICENSE

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
                    Version 2, December 2004

 Copyright (C) 2004 Sam Hocevar <sam@hocevar.net>

 Everyone is permitted to copy and distribute verbatim or modified
 copies of this license document, and changing it is allowed as long
 as the name is changed.

            DO WHAT THE FUCK YOU WANT TO PUBLIC LICENSE
   TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

  0. You just DO WHAT THE FUCK YOU WANT TO.

PKGBUILD

# Maintainer: Yamada Hayao <hayao@fascode.net>
pkgname=archnews
pkgver='20220720'
pkgrel='1'
pkgdesc='Show the latest news from Arch Linux official page'
arch=('any')
url='https://gist.github.com/Hayao0819/897be45dfedb0aa4fcc2735a0831966f'
license=('WTFPL')
depends=('zenity')
source=(
    "archnews.sh::https://gist.githubusercontent.com/Hayao0819/897be45dfedb0aa4fcc2735a0831966f/raw/ArchNews.sh"
    "show-archnews.desktop::https://gist.githubusercontent.com/Hayao0819/897be45dfedb0aa4fcc2735a0831966f/raw/show-archnews.desktop"
    "FasBashLib::git+https://github.com/Hayao0819/FasBashLib.git#commit=3198a759281504ccb2af4df76fca192be9a81e17"
)
sha512sums=('SKIP' 'SKIP' 'SKIP')


build(){
    cd "$srcdir/FasBashLib"
    git submodule update --init --recursive
    ./tools.sh build single -out "$srcdir/fasbashlib.sh" URL BetterShell Parsrs Array ParseArg
}

package() {
    # Install files
    install -Dm 755 "$srcdir/archnews.sh" "$pkgdir/usr/bin/archnews"
    install -Dm 644 "$srcdir/show-archnews.desktop" "$pkgdir/usr/share/applications/show-archnews.desktop"
    install -Dm 755 "${srcdir}/fasbashlib.sh" "$pkgdir/usr/lib/archnews.sh"
}

show-archnews.desktop

[Desktop Entry]
Type=Application
Version=1.0
Name=ArchNews
Comment=Show the latest news from Arch Linux official page
Path=/usr/bin
Exec=/usr/bin/archnews
Icon=archlinux
Terminal=false
Categories=Internet;Utility;