djcev.com

#!/bin/sh
#
#  Copyright (c) 2015-2022, Cameron Vanderzanden. Available under the
#  terms of the 2-clause BSD license. Please see the file "LICENSE" in
#  the root dir of this repository for more information.
#
#- tag_cover.sh 2016/07/05 cev, updated 2021/07/23 & 2022/01/29.
## Usage: tag_cover.sh [-3fdhvV] [-c coverfile] <file>
##
##     Add a cover image to an audio file (mp3 or flac) or display the
##     cover image embedded in an existing file.
## 
##       -3     Operate on mp3 files
##       -f     Operate on flac files
##       -c     Use [coverfile] instead of "00 cover.jpg"
##       -d     Display cover embedded in file <file> to the screen
##       -h     Show help
##       -v     Verbose
##       -V     Print version info
#
#  TODO: better error checking.
#  TODO: implement option to choose image viewer instead of xdg-open

[ -x $HOME/.local/bin/cev_print.sh ] && . $HOME/.local/bin/cev_print.sh

self="${0##*'/'}"
filetype=""
fileext=""
cover="00 cover.jpg"
display=""
verbose=""
tdir=""

if [ "$self" = "flac_cover.sh" -o "$self" = "flac_cover" ]; then
    filetype="flac"
    fileext="flac"
elif [ "$self" = "mp3_cover.sh" -o "$self" = "mp3_cover" ]; then
    filetype="mp3"
    fileext="mp3"
fi

cleanup() {
    if [ -n "$tdir" -a -d "$tdir" ]; then
        rm -f $tdir/*.*
        rmdir $tdir
    fi
}

die_filenotfound() {
    print_filenotfound "$*"
    exit 1
}

die_nofile() {
    print_nofile
    exit 1
}

die_unknownfiletype() {
    shortname="$(basename "$*")"
    print_unknownfiletype "$shortname"
    exit 1
}

is_flac() { test_mimetype.sh -t "audio/x-flac" "$@" ; }

is_mp3() {
    if test_mimetype.sh -t "audio/mpeg" "$@"; then
        return 0
    else
        # test file extension
        tmpname="$(basename "$@" ".mp3")"
        tmpname2="${@##$tmpname}"
        if [ "$tmpname2" = ".mp3" ]; then
            return 0
        fi
    fi
    return 1
}

flac_getcover() {
    metaflac --export-picture-to="$tdir/$cover" "$*" 2>/dev/null
}

flac_setcover() {
    metaflac --import-picture-from="3||||$cover" "$1"
}

mp3_getcover() {
    eyeD3 --write-images "$tdir" "$*" 1>/dev/null 2>&1
}

mp3_setcover() {
    eyeD3 --add-image="${cover}:FRONT_COVER:" "$1"
}

while getopts "3fc:dhvV?" option; do
    case $option in
        3) filetype="mp3" && fileext="mp3" ;;
        f) filetype="flac" && fileext="flac" ;;
        c) cover="$OPTARG" ;;
        d) display="y" ;;
        h) print_help && exit 0 ;;
        v) verbose="y" ;;
        V) print_version && exit 0 ;;
        "?") print_help && exit 0 ;;
    esac
    shift $((OPTIND - 1))
done

[ $# -lt 1 ] && die_nofile
[ ! -f "$*" ] && die_filenotfound "$*"
    
if [ "$filetype" ]; then
    eval get_cover=\${filetype}_getcover
    eval set_cover=\${filetype}_setcover
elif is_flac "$@"; then
    filetype="flac" && fileext="flac"
    get_cover="flac_getcover"
    set_cover="flac_setcover"
elif is_mp3 "$@"; then
    filetype="mp3" && fileext="mp3"
    get_cover="mp3_getcover"
    set_cover="mp3_setcover"
else
    die_unknownfiletype "$*"
fi

if [ "$display" ]; then
    trap cleanup EXIT
    tdir=$(mktemp -d ${TMPDIR:-/tmp}/${self}.XXXXXXXX)
    $get_cover "$*"
    xdg-open "$tdir"/* &
    sleep 1
    exit 0
else
    if [ "$verbose" ]; then
        print_self
        printf "%badding cover '%b%s%b' to file '%b%s%b'%b\n" "$_norm" \
            "$coverfile" "$_high" "$_norm" "$_high" "$*" "$_norm" "$_clear"
    fi
    $set_cover "$*"
    exit 0
fi