soundcloud-user-downloader

#!/bin/bash
# +-----------------------------------------------------------------------------------------+
# | Example from Soundcloud music downloader by 360percents.com                             |
# | Download all tracks from username                                                       |
# | Aug 2011 flip hess [email protected]                                                  |
# +-----------------------------------------------------------------------------------------+

# Global variables:

PATH='/usr/local/sbin:/usr/local/bin:/sbin:/bin:/usr/sbin:/usr/bin'
SCRIPT_PATH="$( basename ${0} )"
DIR="${HOME}/Music/soundcloud/"


# Functions:

  # exit function
  function die()
  {
    echo "${1}"
    exit 1
  }


  # The main function.
  function fMain()
  {
    # check for arguments:
    [ ${#} -gt 0 ] || fShowUsage
    [ ${#} -lt 2 ] || fShowUsage

    # create directory:
    if [ ! -d "${DIR}" ]
    then
      mkdir -p "${DIR}" || die "Failed to create ${DIR} Exiting ${SCRIPT_PATH}"
    else
      cd "${DIR}" || die "Failed to cd to {HOME}/Music/soundcloud/"
    fi

    # check for empty var:
    [ -n "${1}" ] || fShowUsage

    # check if username exist:
    { curl -s --user-agent 'Mozilla/5.0' http://soundcloud.com/${1}  | grep -q 'Oops'; } && die "Username unknown on soundcloud! Exiting ${SCRIPT_PATH}"

    URL="http://soundcloud.com/${1}"

    # check if url is valid by regex:
    REGEX='(https?|ftp|file)://[-A-Za-z0-9\+&@#/%?=~_|!:,.;]*[-A-Za-z0-9\+&@#/%=~_|]'
    [[ ${URL} =~ ${REGEX} ]] || { echo "Provided url / username is not valid!" ; echo ; fShowUsage; }

    # select pages:
    PAGES="$( curl -s --user-agent 'Mozilla/5.0' ${URL} | tr '"' "\n" | grep "tracks?page=" | sort -u | tail -n 1 | cut -d "=" -f 2 )"

    # set to 1 if var is empty
    [ -n "${PAGES}" ] || PAGES=1

    # notify
    echo "Found ${PAGES} pages of songs!"

    # do the magic
    for (( PAGE=1; PAGE <= ${PAGES}; PAGE++ ))
    do
      if [ "${PAGES}" = 1 ]
      then
        THIS="$( curl -s --user-agent 'Mozilla/5.0' ${URL} )";
      else
        THIS="$( curl -s --user-agent 'Mozilla/5.0' ${URL}/tracks?page=${PAGE} )";
      fi

      SONGS="$( echo "${THIS}" | grep 'streamUrl' | tr '"' "\n" | grep 'http://media.soundcloud.com/stream/')" || die "No songs found for user ${1}! Exiting ${SCRIPT_PATH}"
      SONGCOUNT="$( echo "${SONGS}" | wc -l )" || die "Failed to determine songcount"
      TITLES="$( echo "${THIS}" | grep 'title":"' | tr ',' "\n" | grep 'title' | cut -d '"' -f 4)" || die "Failed to determine titles!"

      # check for empty variable:
      [ -n "${SONGS}" ] || die "No song found at ${URL}/tracks?page=${PAGE}"

      # notify:
      echo "Downloading ${SONGCOUNT} songs from page ${PAGE}..."

      # fill aray
      for (( SONGID=1; SONGID <= ${SONGCOUNT}; SONGID++ ))
      do
        # get title
        TITLE="$( echo "${TITLES}" | sed -n "${SONGID}"p )"
        # notify
        echo "Downloading ${TITLE}..."
        URL="$( echo "${SONGS}" | sed -n "${SONGID}"p)"
        # download track:
    { curl -#  -L --user-agent 'Mozilla/5.0' -o "${DIR}/${TITLE}.mp3" ${URL} && echo "Done downloading ${TITLE}.mp3 from ${URL}"; } || \
    { echo "Failed to download ${TITLE}.mp3, Skipping to next track!"; continue; }
        echo "----------------------------------------------------------------------------"
      done
    done

    return 0

  }

  # Shows usage.
  function fShowUsage()
  {
    echo "Soundcloud.com music downloader"
    echo "Usage: ${SCRIPT_PATH} DJ-username"
    echo

    exit 1
  }

# first things first: check for curl
  [ -x "$(which curl)" ] || die "this script depends on cURL"


# Start the program:
  fMain "${@}"

  # Exit with previous return code:
  exit "${?}"