Create playlist from nested directories of music

gen_pl.bat

@echo off
if "%~2"=="" (
    echo Usage: %0 ^<directory^> ^<playlist_name^>
    exit /B 1
)

set "directory=%1"
set "playlist_name=%2"

if not exist "%directory%" (
    echo Directory not found: %directory%
    exit /B 1
)

set "audio_file_types=mp3 flac ogg wav m4a"

set "playlist_file=%directory%\%playlist_name%.m3u"
type nul > "%playlist_file%"

for %%i in (%audio_file_types%) do (
    for /r "%directory%" %%f in (*%%i) do (
        rem Calculate the relative path of the audio file
        set "relative_path=%%~nf%%~xf"
        setlocal enabledelayedexpansion
        set "relative_path=!relative_path:%directory%\=!"
        endlocal

        rem Append the relative path to the playlist file
        echo !relative_path!>> "%playlist_file%"
    )
)

echo Playlist created: %playlist_file%

gen_pl.sh

#!/bin/bash

if [ $# -lt 2 ]; then
  echo "Usage: $0 <directory> <playlist_name>"
  exit 1
fi

directory="$1"
playlist_name="$2"

if [ ! -d "$directory" ]; then
  echo "Directory not found: $directory"
  exit 1
fi

audio_file_types=("mp3" "flac" "ogg" "wav" "m4a")

playlist_file="${directory}/${playlist_name}.m3u"
touch "$playlist_file"

for audio_type in "${audio_file_types[@]}"; do
  find "$directory" -type f -iname "*.${audio_type}" | while read -r audio_file; do
    # Calculate the relative path of the audio file
    relative_path="${audio_file#$directory/}"

    # Append the relative path to the playlist file
    echo "$relative_path" >> "$playlist_file"
  done
done

echo "Playlist created: $playlist_file"