Add script to list tags

Audio MP3/Tag - List ID3 tags

@@ -0,0 +1,71 @@
+#!/usr/bin/env bash
+
+# Source the script 'common-functions.sh'.
+SCRIPT_DIR=$(cd -- "$(dirname -- "${BASH_SOURCE[0]}")" &>/dev/null && pwd)
+ROOT_DIR=$(grep --only-matching "^.*scripts[^/]*" <<<"$SCRIPT_DIR")
+source "$ROOT_DIR/common-functions.sh"
+
+_main() {
+    local input_files=""
+    local output_dir=""
+
+    # Execute initial checks.
+    _check_dependencies "command=id3v2"
+    _display_wait_box "2"
+    input_files=$(_get_files "par_type=file; par_recursive=true; par_select_mime=audio/mpeg; par_skip_extension=bak")
+
+    # Execute the function '_main_task' for each file in parallel.
+    _run_task_parallel "$input_files" "$output_dir"
+
+    local std_output=""
+    std_output=$(_storage_text_read_all)
+    std_output=$(_text_sort "$std_output")
+
+    _display_list_box "$std_output" "--column=Tag;--column=Artist;--column=Title;--column=File"
+}
+
+_main_task() {
+    local input_file=$1
+    local output_dir=$2
+    local std_output=""
+
+    # Run the main process.
+    std_output=$(id3v2 --list "$input_file" 2>&1)
+    _check_output "$?" "$std_output" "$input_file" "" || return 1
+    # shellcheck disable=SC2001
+    std_output=$(tr -s " _-" <<<"$std_output")
+    # shellcheck disable=SC2001
+    std_output=$(sed "s|: |$FIELD_SEPARATOR|" <<<"$std_output")
+
+    local tag_artist=""
+    local tag_title=""
+    local tag_version=""
+    tag_artist=$(grep " (Lead performer" <<<"$std_output" | cut -d "$FIELD_SEPARATOR" -f 2)
+    tag_title=$(grep " (Title" <<<"$std_output" | cut -d "$FIELD_SEPARATOR" -f 2)
+
+    # Get ID3 version.
+    if grep --quiet "id3v1 tag info for" <<<"$std_output" &>/dev/null; then
+        tag_version="ID3v1"
+    fi
+    if grep --quiet "id3v2 tag info for" <<<"$std_output" &>/dev/null; then
+        if [[ -n "$tag_version" ]]; then
+            tag_version+=" + "
+        fi
+        tag_version+="ID3v2"
+    fi
+
+    # Check if the values are not empty.
+    if [[ -z "$tag_version" ]]; then
+        tag_version="(empty)"
+    fi
+    if [[ -z "$tag_artist" ]]; then
+        tag_artist="(empty)"
+    fi
+    if [[ -z "$tag_title" ]]; then
+        tag_title="(empty)"
+    fi
+
+    _storage_text_write_ln "$tag_version$FIELD_SEPARATOR$tag_artist$FIELD_SEPARATOR$tag_title$FIELD_SEPARATOR$(_text_remove_pwd "$input_file")"
+}
+
+_main "$@"