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.
#
#- flac_reencode.sh 2015/03/26 cev
#- flac_reencode.sh 2021/07/23 cev
## Usage: flac_reencode.sh [-hV] <file or directory>
## 
##       -h     Show help
##       -V     Print version info
#  Useful for sniffing out broken flac files.
#  References:
#      http://unix.aspcode.net/view/63539508700411522976682/copy-all-tags-from-one-flac-file-to-another

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

self="${0##*'/'}"
tdir=""
cwd=""

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

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

die_nofile() {
    print_nofile
    exit 1
}

flac_recover() {
    printf " %berror.%b\n" "$_error" "$_clear"
    mv "$1" "$2"
    exit 1
}

flac_reencode() {
    print_self
    printf "%b%s%b" "$_high" "$@" "$_norm"
    base="$(basename "$@" ".flac")"
    printf "."
    flac --totally-silent -o "$tdir/$base.wav" -d "$@" || \
        flac_recover "$tdir/$base.backup" "$@"
    mv "$@" "$tdir/$base.backup"
    printf "."
    flac --totally-silent -o "$@" "$tdir/$base.wav" || \
        flac_recover "$tdir/$base.backup" "$@"
    printf "."
    
    printf " copying tags"
    metaflac --no-utf8-convert \
        --export-tags-to="$tdir/$base.tags" "$tdir/$base.backup" && \
        metaflac \
            --remove-all-tags --import-tags-from="$tdir/$base.tags" "$@" || \
        flac_recover "$tdir/$base.backup" "$@"
    printf "."
    pic="$(metaflac --list --block-type=PICTURE "$tdir/$base.backup")"
    if [ -n "$pic" ]; then
        metaflac --export-picture-to="$tdir/picture" "$tdir/$base.backup" || \
            flac_recover "$tdir/$base.backup" "$@"
        printf "."
        metaflac --import-picture-from="3||||$tdir/picture" "$@" || \
            flac_recover "$tdir/$base.backup" "$@"
        printf "."
        rm "$tdir/picture"
    else
        printf ".."
    fi
    rm "$tdir/$base.backup" "$tdir/$base.wav"
    
    printf "%b\n" "$_clear"
}

while getopts "hV?" option; do
    case $option in
        h) print_help && exit ;;
        V) print_version && exit ;;
        "?") print_help && exit ;;
    esac
    shift $((OPTIND - 1))
done

[ $# -lt 1 ] && die_nofile

trap cleanup EXIT
tdir=$(mktemp -d ${TMPDIR:-/tmp}/${self}.XXXXXXXX)

if [ -d "$@" ]; then
    cwd="$PWD"
    cd "$@"
    for i in *.flac; do
        flac_reencode "$i"
    done
    cd "$cwd"
elif [ -e "$@" ]; then
    flac_reencode "$@"
else
    die_filenotfound "$*"
fi