Renamed script (dropped extension)

AAXtoMP3

@@ -0,0 +1,100 @@
+#!/usr/bin/env bash
+
+set -o errexit -o noclobber -o nounset -o pipefail
+
+codec=libmp3lame
+extension=mp3
+mode=chaptered
+
+if [ "$#" -eq 0 ]; then
+        echo "Usage: bash AAXtoMP3.sh [--flac] [--single] AUTHCODE {FILES}"
+        exit 1
+fi
+
+if [[ "$1" = '--flac' ]]
+then
+    codec=flac
+    extension=flac
+    shift
+fi
+
+if [[ "$1" == '--single' ]]
+then
+    mode=single
+    shift
+fi
+
+if [ ! -f .authcode ]; then
+    auth_code=$1
+    shift
+else
+    auth_code=`head -1 .authcode`
+fi
+
+debug() {
+    echo "$(date "+%F %T%z") ${1}"
+}
+
+trap 'rm -r -f "${working_directory}"' EXIT
+working_directory=`mktemp -d 2>/dev/null || mktemp -d -t 'mytmpdir'`
+metadata_file="${working_directory}/metadata.txt"
+
+save_metadata() {
+    local media_file
+    media_file="$1"
+    ffprobe -i "$media_file" 2> "$metadata_file"
+}
+
+get_metadata_value() {
+    local key
+    key="$1"
+    normalize_whitespace "$(grep --max-count=1 --only-matching "${key} *: .*" "$metadata_file" | cut -d : -f 2 | sed -e 's#/##g;s/ (Unabridged)//' | tr -s '[:blank:]' ' ')"
+}
+
+get_bitrate() {
+    get_metadata_value bitrate | grep --only-matching '[0-9]\+'
+}
+
+normalize_whitespace() {
+    echo $*
+}
+
+for path
+do
+    debug "Decoding ${path} with auth code ${auth_code}..."
+
+    save_metadata "${path}"
+    genre=$(get_metadata_value genre)
+    artist=$(get_metadata_value artist)
+    title=$(get_metadata_value title)
+    output_directory="$(dirname "${path}")/${genre}/${artist}/${title}"
+    mkdir -p "${output_directory}"
+    full_file_path="${output_directory}/${title}.${extension}"
+
+    </dev/null ffmpeg -loglevel error -stats -activation_bytes "${auth_code}" -i "${path}" -vn -codec:a "${codec}" -ab "$(get_bitrate)k" -map_metadata -1 -metadata title="${title}" -metadata artist="${artist}" -metadata album_artist="$(get_metadata_value album_artist)" -metadata album="$(get_metadata_value album)" -metadata date="$(get_metadata_value date)" -metadata track="1/1" -metadata genre="${genre}" -metadata copyright="$(get_metadata_value copyright)" "${full_file_path}"
+
+    debug "Created ${full_file_path}."
+
+    if [ "${mode}" == "chaptered" ]; then
+        debug "Extracting chapter files from ${full_file_path}..."
+
+        while read -r -u9 first _ _ start _ end
+        do
+            if [[ "${first}" = "Chapter" ]]
+            then
+                read -r -u9 _
+                read -r -u9 _ _ chapter
+                chapter_file="${output_directory}/${title} - ${chapter}.${extension}"
+                </dev/null ffmpeg -loglevel error -stats -i "${full_file_path}" -ss "${start%?}" -to "${end}" -codec:a copy -metadata track="${chapter}" "${chapter_file}"
+            fi
+        done 9< "$metadata_file"
+        rm "${full_file_path}"
+        debug "Done creating chapters. Chaptered files contained in ${output_directory}."
+    fi
+
+    cover_path="${output_directory}/cover.jpg"
+    debug "Extracting cover into ${cover_path}..."
+    </dev/null ffmpeg -loglevel error -activation_bytes "${auth_code}" -i "${path}" -an -codec:v copy "${cover_path}"
+    debug "Done."
+    rm "${metadata_file}"
+done