initialize repo

LICENSE

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+MIT License
+
+Copyright (c) 2020 Olivier CHURLAUD
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

README.md

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+# mpd_cdrom
+
+Does everything so that whenever a cd is inserted, its music is added to the mpd main playlist. When the cd is removed, it all corresponding songs are removed from the playlist.

packaging/archlinux/PKGBUILD

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+
+pkgbase="mpd_cdrom"
+pkgname="mpd_cdrom"
+pkgver="1.0.0"
+pkgrel=1
+
+pkg_desc="Add songs to mpd when a CD-ROM is inserted, remove them when ejected"
+license=('MIT')
+arch=('any')
+depends=('mpd' 'mpc' 'cdparanoia')
+
+source=("${pkgname}-${pkgver}::git+https://github.com/ochurlaud/mpd_cdrom.git")
+md5sums=('SKIP')
+
+install=${pkgname}.install
+
+package() {
+    cd "${srcdir}/${pkgname}-${pkgver}"
+    mkdir -p "${pkgdir}/usr/bin/"
+    mkdir -p "${pkgdir}/etc/udev/rules.d/"
+    mkdir -p "${pkgdir}/etc/systemd/system/"
+    cp src/bin/* "${pkgdir}/usr/bin/"
+    cp src/systemd/* "${pkgdir}/etc/systemd/system/"
+    cp src/udev-rules/* "${pkgdir}/etc/udev/rules.d/"
+}

packaging/archlinux/mpd_cdrom.install

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+post_install() {
+    echo "INFO: adding user 'mpd' to the 'optical' group"
+    usermod -aG optical mpd
+}

src/bin/mpd_cdrom

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+#!/bin/bash
+
+usage() {
+    echo "Usage: $0 [load|unload]"
+    exit $1
+}
+
+mpd_load() {
+    nbtracks=$(cdparanoia -sQ |& grep -P "^\s+\d+\." | wc -l)
+
+    for ((i=1; i<=${nbtracks};i++)) ; do
+        mpc add cdda:///${i}
+    done
+}
+
+mpd_unload() {
+    positions=$(mpc playlist | grep -n "cdda:///" | cut -d':' -f1)
+    if [[ "${positions}" != "" ]] ; then
+        mpc del ${positions}
+    fi
+}
+
+control_dependencies() {
+    which $1 > /dev/null
+    if [[ "$?" -ne "0" ]]; then
+        echo "[ERROR] $1 is not installed"
+        exit 2
+    fi
+}
+
+for dependency in "mpc" "cdparanoia"; do
+    control_dependencies ${dependency}
+done
+
+if [[ "$#" -ne "1" ]] ; then
+    usage 1
+fi
+
+if [[ "$1" = "load" ]] ; then
+    mpd_load
+elif [[ "$1" = "unload" ]] ; then
+    mpd_unload
+else
+    usage 1
+fi
+

src/systemd/mpd-load-cdrom.service

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+[Service]
+Type=oneshot
+ExecStart=/usr/bin/mpd_cdrom load

src/systemd/mpd-unload-cdrom.service

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+[Service]
+Type=oneshot
+ExecStart=/usr/bin/mpd_cdrom unload

src/udev-rules/90-raspi3-cdrom.rules

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+ACTION=="change", SUBSYSTEM=="block", KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}=="", TAG+="systemd", ENV{SYSTEMD_WANTS}="mpd-load-cdrom.service"
+ACTION=="change", SUBSYSTEM=="block", KERNEL=="sr*", ENV{DISK_EJECT_REQUEST}=="1", TAG+="systemd", ENV{SYSTEMD_WANTS}="mpd-unload-cdrom.service"